invasive species – Page 2 – NOAA Teacher at Sea Blog

August 6, 2012August 11, 2021

Susan Kaiser: Blue Planet Connections, August 5, 2012

NOAA Teacher at Sea
Susan Kaiser
Aboard NOAA Ship Nancy Foster
July 25 – August 4, 2012

Mission: Florida Keys National Marine Sanctuary Coral Reef Condition, Assessment, Coral Reef Mapping and Fisheries Acoustics Characteristics
Geographical area of cruise: Florida Keys National Marine Sanctuary
Date: August 5, 2012

Weather Data from the Bridge
Latitude: 24 deg 34 min N
Longitude: 81 deg 48 min W
Wind Speed: 2.5 kts
Surface Water Temperature: 32.1 C
Air Temperature: 29 C
Relative Humidity: 71 %

Science and Technology Log

It is easy to see why the Earth is nicknamed the Blue Planet. Its dominant physical feature is the sea water which covers approximately 70% of the surface making it appear blue even from space. People have depended on the oceans for centuries not just for the obvious things such as food, transportation, jobs and recreation but also for the very oxygen we breathe and the fresh water we drink to survive. Humans need the ocean for all these things and more. We are inextricably interconnected to the ocean; our survival depends on it.

The vastness of the ocean allows us to believe that human actions won’t have a major effect on it. For example, pollution that leaks into the ocean would be diluted by the huge amount of water so that no real harm would be done to the habitat or the organisms living in the ocean. This may have been true for a time when the human population was less than the 7 billion people now living on Earth. However, the fact is human actions do influence the ocean and in ways that matter. Often these impacts are unintended or accidental but they still lead to a change in the marine ecosystem. Sadly, many times these effects are negative such as the Deepwater Horizon/BP MC252 oil spill In 2010, an explosion on an oil drilling rig in the Gulf of Mexico released almost 5 million barrels of oil into the ocean immediately changing the marine habitat and harming the organisms that lived there. Scientists are still determining the long term effects of this spill and helping to restore the area. In the past other spills have occurred such as the grounding of the oil tanker Exxon Valdez in 1989 that released 11 million gallons of crude oil along the Alaskan coast.

Not all ocean impacts are large events related to the petroleum industry. Even small individual human decisions can be significant. For example, if a pet owner no longer wants to keep his exotic species pet he might release it into the wild or an environment where that organism isn’t usually found.

Mrs. Kaiser holding a speared Lionfish. Photo by Jeff Renchen.

This is probably how the Lionfish, scientific name Pterois volitans, has become established in the coastal waters near the Carolinas and Florida, according to Paula Whitfield, a NOAA marine scientist. It may seem like a minor problem that the Lionfish is now living in Gulf Coast ocean water. What do you predict will happen to the number of Lionfish in this area knowing that they have everything they need to flourish: food, water, space but no predators to hunt them? They will reproduce and increase their numbers quickly. Lionfish will out number native species of fish and beat them out for those resources displacing them in their ecosystem. Lionfish will out compete native species decreasing their numbers and the diversity of organisms. While on our cruise the science team encountered groups of Lionfish living under large rocks at depths of 100 feet. They speared a specimen and brought it aboard to examine it closely. Lionfish are invading this marine habitat taking it over from the native species. Any organism that is introduced into a new ecosystem where it can rapidly increase numbers taking over native habitat is called an invasive species. One solution to this problem is to start catching Lionfish to eat! I am told they are yummy. People just need to be taught how to safely remove their poisonous fins and taste them!

These tiny (15-20mm) fresh water bivalves are invasive species.

Both animal and plant organisms can be invasive species squeezing out more desirable native organisms. In Nevada, we are on the alert to an invasion of Quagga Mussels (Dreissena bugensis) that have been detected in Lake Mead near Las Vegas. These fresh water mollusks are transported on boat exteriors or in bilge water to other fresh water lakes across the United States. It is important that boaters carefully inspect and maintain their equipment to halt the progress of this invasive species to other lakes in Nevada and elsewhere.

The Blue Planet is home to us all. Our decisions and actions make a

Roof of the Nancy Foster Complex in Key West, Florida. Note the native plants.

difference on both a small and large scale. Each of us has a responsibility to make informed choices about these actions. Realizing our reliance on the ocean and other aspects of the environment and working within in these systems really benefits all of us. For example, when architects designed the Dr. Nancy Foster Florida Keys Environment Complex in Key West, Florida they created a Green Building. This means they made choices to “recycle” a neighboring building saving building materials and using it for a new purpose. Office furniture was re-purposed to fit in the new energy efficient building that is LEED Silver certified. Contributing to the ecosystem, the roof is planted with native species of grasses that provide habitat for insects and birds. The plants are watered by rain. Excess rain water is collected and stored for other uses in the building helping to conserve water. While the Dr. Nancy Foster Complex building design is indirectly related to ocean preservation it represents a human action that benefits our Blue Planet. As with the release of a hand full of Lionfish, so can many small actions together can create a big impact. Choose to be connected to our ocean in a positive way. Through a small act you do each day we can preserve and even improve our environment and oceans. The Blue Planet is a great place to call home. Let’s help keep it that way.

Personal Log

As I finish writing this last blog from my home in Reno Nevada, I am reflecting on the many people I have met and the experiences I have had as a NOAA Teacher at Sea. It is through NOAA’s interest in connecting scientists, mariners and educators that I was able to participate in this amazing experience but also because I took a chance and applied. I might not have been chosen but I didn’t let that stop me from taking the risk. If I had not made the time to apply and prepared my essays and sample lessons look what I would have missed. The chief scientist, Scott Donahue, also took a chance on me and accepted me as an active participant on his research cruise. He and the science team went out of their way to make sure that I stayed safe and got an outstanding experience as an observer of their research. Everyone took time to answer my questions and describe their research to reach a larger audience, YOU!

On the last day we sailed into port at Key West, few people aboard knew that

Ensign Richard De Triquet (right) maneuvers the ship. Executive Officer CM Donn Pratt (left) observes.

Ensign Richard de Triquet was given the task of bringing the NOAA Ship Nancy Foster into dock. It was his first time to manage this procedure! Commanding Officer LCDR Holly Jablonski knew he had the skill and took a risk assigning Ensign De Triquet to maneuver the ship into port. Working as a team, the other officers on the bridge used binoculars to spot potential obstacles in the channel. They discussed the best course for the ship and provided input to Ensign De Triquet who announced the orders. By the way, the docking was was smoothly accomplished and I got to observe the entire process including the debriefing. Congratulations Ensign De Triquet, nice work!

My NOAA Teacher at Sea experience is one that I will never forget! It was a pleasure to be a part of this science research cruise and to

Mrs. Kaiser snorkeling Ft. Jefferson. Photo by Alejandro Acosta, PhD.

meet such a wonderful group of people. My blog would not be complete without acknowledging several individuals in the group who were especially helpful. Danielle Morley who cheerfully provided me with an overview of the VR2 research including a power point presentation and got me involved in the data collection. Hatsue Bailey who acted as my photographer whenever needed. Sarah Fangman who provided ground transportation. Alejandro Acosta, PhD who took me snorkeling after a tour of Ft. Jefferson in the Dry Tortugas. He also was the underwater photographer of the organisms we saw that day. Thank you, everyone!

Just as people are interconnected to the ocean they are also interconnected to each other. All of the people I met on this adventure worked together toward a common purpose. Each one of them making their own contribution to reaching that goal. They did it by doing their best work and trusting that each member of the group would in turn do their part to their best ability. Effort and communication were key to their success. From what I witnessed it worked out perfectly.

These 2 sponges are over 100 years old. They are known as the "Redwoods of the Reef." Photo by Hatsue Bailey. — These 2 sponges are over 100 years old. They are known as the “Redwoods of the Reef.” Photo by Hatsue Bailey

Summer is quickly coming to an end and with it the excitement of a new school grows. My students and I have the opportunity to make connections, to each other, to the Blue Planet and the organisms that live here. This year, if you are faced with a challenge, be brave and take it on. Assess an opportunity and take the risk to try something unfamiliar. Extend kindness to someone outside your existing circle of friends. Put your toe in the water and get comfortable listening, observing, thinking and asking questions. You will be amazed what you will learn and the things you will experience. Take a chance. Reflect, communicate and work together. Scientists and NOAA Ship Nancy Foster officers and crew showed how well this works to get the job done. Let’s follow their example so that your 7th grade year in science a memorable one too.

Mrs. Kaiser wearing the survival suit. Photo by Hatsue Bailey.

A crab exploring the ocean floor. Photo by Hatsue Bailey

Scientist Danielle Morley changing out a VR2. Photo by Sean Morton.

July 11, 2012August 11, 2021

Marsha Skoczek: Lionfish, Groupers, and Bigeye, Oh My! July 11, 2012

NOAA Teacher at Sea
Marsha Skoczek
Aboard NOAA Ship Pisces
July 6 – 19, 2012

Mission: Marine Protected Areas Survey
Geographic area of cruise: Subtropical North Atlantic, off the east coast of South Carolina
Date: July 11, 2012

Location:
Latitude: 32.2899N
Longitude: 78.5443W

Weather Data from the Bridge
Air Temperature: 28.1C (82.4F)
Wind Speed: 9.75 knots ( 11.2 mph)
Wind Direction: From the SSW
Relative Humidity: 86 %
Barometric Pressure: 1017
Surface Water Temperature: 27.7C (80.6F)

Science and Technology Log

lionfish — Lionfish off the South Carolina coast.

Even though our mission focuses on the five species of grouper and the two species of tilefish that I have shared in earlier postings, something that has surprised us all is the sheer number of lionfish that have invaded these reef areas. I sat down with Andy David, Co-Principal Investigator on our cruise, to get the full scoop on this invasive species.

An invasive species is one that does not naturally occur in an area but was either deliberately or accidentally released into the wild and competes with native species. Alien invasive species often have very few, if any, natural predators to help keep their populations in check. As a result, invasive species populations often explode. These invasive species begin competing with the native inhabitants for the same food supply potentially starving out the native fish and forcing them to move out of that region in search of food.

Lionfish are native to the western Pacific. They were first observed in the Atlantic Ocean in 1992 on coral reefs off West Palm Beach, FL. Since the water temperature and bottom habitat in the South Atlantic very closely resemble that of the lionfish’s native habitat, conditions were favorable for the population to spread very rapidly. Unlike most fish in this region the lionfish spawns year round, so it does not have a normal spawning season. A female lionfish can spawn every couple of days and each time can release up to 15,000 eggs. These eggs were carried off by the current and spread to other parts of the east coast. Since few of the native Atlantic predators eat lionfish, they were able to reach maturity and continue building their population. So what the genetic analyses indicates started as six individual lionfish off West Palm Beach in 1992, now has spread all the way north to Cape Hatteras, North Carolina via the Gulf Stream, then on other currents across to Bermuda and down to the Bahamas, Cuba, Puerto Rico, the Virgin Islands. And they have now made their way into the Gulf of Mexico and are moving along the coastal states in the Gulf. Check out this animation demonstrating the spread of the lionfish.

Bigeye with lionfish — Short bigeye with lionfish

Lionfish tend to live in the same rocky reef habitats as the grouper and short bigeye, so we see them together quite frequently on our ROV dives. All of these reef fish are competing for the same food supply — small fish and crustaceans. The grouper, short bigeye, and lionfish prefer to live in rocky overhangs or crevasses. Lionfish are ambush predators and will wait for their prey to swim by and suck them into their mouths. They also have a voracious appetite.

All of the lionfish we have seen are extremely fat and happy. They are gobbling up the food supply just as fast as they can. Often times we will see multiple lionfish using the same rock as shelter. In fact, in a single three-hour dive covering about 1.5 nautical miles, we saw upwards of 150 lionfish!! And that was only within the 6-10 foot wide field of view from the ROV camera. There are plenty more that we were not able to document since they were out of view. In one week alone we have seen nearly 700 lionfish! Imagine how much of the available food source a whole gaggle of lionfish can consume on the reef. The concern is that the lionfish are using up all of the food available so that the commercially important fish such as grouper and snapper will no longer have anything to eat and will be forced to leave the area. This could be devastating to the grouper population which could result in fewer fish being available for commercial and recreational fishermen as well as a blow to the species in general.

A gaggle of lionfish off the coast of South Carolina. Can you tell how many lionfish are in this picture?

So what can we do about this? Agencies like NOAA are encouraging divers to hunt any lionfish they see and take them home to eat. Lionfish derbies are sponsored by local diving organizations, such as REEF, to encourage divers to participate in these hunts. But hunting lionfish with scuba divers will not solve the entire problem.

On this particular research cruise, we have seen lionfish down to depths of about 100 meters (330 feet). This is well below the limits of recreational scuba diving. Lionfish have been seen at depths of 300 meters (1,000 feet). How can we control the spread of this invasive species at depth? Some groups such as the Roatan Marine Park think that training sharks to prey on lionfish might be a solution. This is a lengthy process and it is uncertain if the sharks would continue to hunt lionfish once they are out in nature on their own. Some species of grouper and moray eels can also eat lionfish, but they prefer to just leave them alone rather than risk being the recipient of a sharp sting from those pesky poisonous fins. The cornet fish might also prey upon juvenile lionfish by sneaking up on them from behind. We have seen about a dozen cornetfish in this first week of ROV footage compared to the one per year that are seen normally. Could the cornetfish be a partial solution to this invasion? We can only hope.

There is also a concern with the push to make lionfish a commercial species. Since they inhabit coral reefs, it is possible that lionfish, along with grouper and amberjacks, could become tainted with a toxin called ciguatera. In a joint study between NOAA and the FDA in the seas surrounding the Lesser Antilles islands of St. Maarten, Virgin Islands and Puerto Rico, ciguatera was found in 26% of the lionfish sampled. These larger reef fish prey upon the smaller herbivorous reef fish that have eaten the algae carrying the ciguatera toxin. Through biomagnification, the lionfish, grouper, amberjacks and snapper carry enough of the toxin to make humans extremely ill. Symptoms of ciguatera poisoning include nausea, vomiting, diarrhea, headaches, muscle aches, and reversal of hot and cold sensation, just to name a few. Symptoms can last for weeks to years depending on the individual. This toxin cannot be removed from the fish by cooking, so the debate continues as to whether lionfish are safe enough to be marketed as a commercial fish in areas where ciguatera is present.

Personal Log

Here I am in the drylab counting lionfish from ROV images.

I am amazed at how quickly the lionfish have spread throughout the Western Atlantic region. So what started out as six lionfish in 1992, now numbers over 10,000,000 just twenty years later. Their coloring allows them to remain camouflaged so they are able to just sit and wait for food to come to them. When we are looking at the ROV screen, it is not always easy to spot these invaders at first. Their prey probably don’t even realize that they are about to be eaten, they blend in that well. Andy David says that with most invasive species, we see a spike in numbers initially, but eventually the numbers should come back down as the lionfish run out of food and as other predators learn how to eat them. How long until we start to see a decline? That remains to be seen. Things may get worse before they get better, or we may already be seeing a decline in numbers. More research needs to be done.

Ocean Careers Interview

In this section, I will be interviewing scientists and crew members to give my students ideas for careers they may find interesting and might want to pursue someday. Today I interviewed Andrew David, Co-Principal Investigator on this expedition.

What is your job title? I am a Research Fishery Biologist and the Chair of the NOAA Diving Control and Safety Board.

What type of responsibilities do you have with this job? As a fishery biologist for NOAA, I am currently conducting research on the commercial fish of the South Atlantic such as grouper and tilefish. As part of my research, we also study the habitat that these fish live in which are the shelf edge and deep reefs. The data that we collect on these species is used to help fishery managers determine where the South Atlantic and Gulf of Mexico MPAs should be placed and if they should be maintained.

As the Chairman of the NOAA Diving Control and Safety Board, I work with the diving officers of other NOAA programs to monitor the safety of the roughly 500 divers in the agency. We do this by creating a set of standards that all divers in NOAA must adhere to, testing new diving equipment, and working with other diving organizations to ensure safe and effective procedures are followed. Our safety record is very good. We normally make close to 15,000 dives a year with an incident rate of below 0.01 percent.

What type of education did you need to get this job? I earned my Bachelor’s Degree in Chemistry and Biology from Stetson University in Deland, Florida. My Master’s Degree is in Marine Science from the University of Southern Florida. My Master’s work focused on the effects of genetically engineered bacteria in the marine environment. It wasn’t exactly what I thought I would study in graduate school, but it was an excellent opportunity that I could not pass up and it helped me to network with other scientists in the field. This led to me getting my job with NOAA straight out of graduate school where I work on topics that have a greater interest to me.

What types of experiences have you had with this job? Working on these deep corals projects has been very rewarding. We have discovered many things on these projects, such as a greater coverage of deep coral reefs than was previously thought, new species of crustaceans, and range and depth extensions for several species. Plus I get to spend time at sea every year while we conduct our research.

What advice do you have for students wanting a career in marine biology? You do not have to go straight into marine biology at a school near the coast as an undergraduate. In fact, it is probably better if you major in a core science such as chemistry or biology for your Bachelor’s and then focus more on marine science when you start looking for a graduate school. Send your applications out to professors at universities with good marine biology programs. If you are offered a position working with a professor who offers you research support, you should strongly consider taking it even if the research topic is not your favorite. Graduate school is about learning how to become a good scientist — you have plenty of time to specialize in an area of interest to you when you get out of school.

Also, take internship opportunities when you can find them! That is how scientists in the field get to know you and what you are capable of. Internships might lead you to your first job out of college. For example, Stacey Harter, the Chief Scientist on our cruise, started with Andy David as an intern. When she graduated from college, they offered her a job! Get internships!

June 27, 2012August 11, 2021

Lesley Urasky: Get that fish outta here! The invasive lionfish, June 24, 2012

NOAA Teacher at Sea
Lesley Urasky
Aboard the NOAA ship Pisces
June 16 – June 29, 2012

Mission: SEAMAP Caribbean Reef Fish Survey
Geographical area of cruise: St. Croix, U.S. Virgin Islands
Date: June 24, 2012

Location:
Latitude: 19.8584
Longitude: -66.4717

Weather Data from the Bridge:

Air Temperature: 29°C (84°F)
Wind Speed: 16 knots (18 mph), Beaufort scale: 4
Wind Direction: from SE
Relative Humidity: 76%
Barometric Pressure: 1,015.3 mb
Surface Water Temperature: 28°C (82°F)

Lionfish in its native habitat. ( Source: National Geographic; Photograph by Wolcott Henry)

Science and Technology Log

One of the species the scientists are continually scanning for in their videos is the appearance of the Lionfish (Pterois volitans/miles); this is one fish they’re hoping not to see. It is not native to these waters and is what is known as an invasive or exotic species.

An invasive species is one that is not indigenous (native) to an ecosystem or area. Many times these organisms are able to exponentially increase their populations because they may have no natural predators, competition for resources, or they may be able to utilize those resources not used by native organisms. Most invasions are caused by human actions. This may involve intentional introduction (many invasive plant species were brought in to create a familiar environment or crop/foraging source), accidentally (rats travelling on ships to distant ports), or unintentionally (people releasing pets that they can no longer take care of). Invasive organisms are problematic because:

They can reduce natural biodiversity and native species.
- Push other species to extinction
- Interbreed, producing hybrids
Degrade or change ecosystem functions
Economically:
- They can be expensive to manage
- Affect locally produced products causing a decline in revenue (decline of honey bees due to a mite infestation which, in turn, decreases pollination rates)

Within its native habitat, the Indo-Pacific region, the Lionfish (Pterois volitans/miles) is not a problem because that is where they evolved. It is in the family Family Scorpaenidae (Scorpionfishes). They inhabit reef systems between depths of 10 m – 175 m. During the day, they generally can be found within crevices along the reef; at night they emerge to forage in deeper waters, feeding upon smaller fish and crustaceans.

Lionfish are venomous and when a person is “stung” by the spines on the dorsal fin, they experience extreme pain, nausea, and can have breathing difficulties. However, a sting is rarely fatal. Despite the hazards of the spines, Lionfish are a popular aquarium species. The problem arises when pet owners irresponsibly get rid of the fish in their aquariums. Instead of giving them away to pet shops, schools, organizations, or other fish enthusiasts, or contacting a local veterinarian about how to humanely dispose of them, they release them into a nearby marine body of water. It’s important to realize that even the smallest, seemingly isolated act can have such large consequences. Remember, if one person is doing it, chances are, others are too. The responsibility of owning an organism is also knowing how to manage it; we need to realize how to protect our marine habitats.

This is where the problem in the Atlantic began. The occurrence of Lionfish was first noticed along the southeastern coast of Florida in 1985. An invasive species is considered established when a breeding population develops. Since their establishment in the waters off of Florida, they have rapidly spread throughout the Atlantic as far north as Rhode Island/Massachusetts , throughout the Caribbean, and into the Gulf of Mexico.

Animated map depicting the spread of the Lionfish

While on our cruise every sighting of a Lionfish was cause for further examination. There was one Lionfish that exhibited a behavior that Kevin Rademacher (Chief Scientist) had never seen before. The fish was on the bottom and moving himself along instead of freely swimming. Videos like this are instrumental in helping scientists figure out Lionfish behavior in their “new” environment as well as their interactions with the surrounding organisms and environment. Hopefully, as this database continues to grow, scientists will develop new understandings of the Lionfish and its effect on the waters of the Atlantic, Caribbean, and Gulf of Mexico.

Divers are encouraged to kill any Lionfish they encounter. The only safe way to do this is from a distance (remember, their dorsal spines are venomous); usually, this is accomplished by using a spear gun. The Commander of the Pisces, Peter Fischel, was doing a final dive off the pier before we left St. Croix. He saw three Lionfish, speared them, and brought them to the scientific crew for data collection. These were frozen and placed in a Ziploc back for preservation. They will be examined back at the lab in Pascagoula, Mississippi.

Three Lionfish caught along the Frederickstad, St. Croix pier. (Notice the 6″ ruler for scale.)

Personal Log

The science portion of the cruise is coming to a close. Today was our last day of sampling. As with yesterday, no fish were caught by the day crew, so we were able to begin cleaning and packing throughout the day instead of waiting until the end. A few days after we arrive in Mayport, Florida, the Pisces will be going out on another cruise along the east coast. On Sunday, July 1st, Joey Salisbury will be arriving in Mayport with a trailer to unload all the scientific equipment and personal gear from this research cruise.

Bandit reel with St. Thomas in the background

In addition to packing, the wet lab and deck have to be cleaned. This entails scrubbing down the tables, coolers, and rails along the deck where we baited our hooks to remove all the fish “scum” that has accumulated over the past three weeks. Between the four of us, we were able to make quick work of the job. There is only one task left for me to do, and that is to take all of our leftover bait, Atlantic Mackerel, and throw it overboard once we are away from the islands. (The bait has been used over the course of the past two years, and has essentially outlived its freshness.)

Day operations crew on the Pisces Caribbean Reef Fish Survey (left to right: Ariane Frappier, Kevin Rademacher (Chief Scientist), Joey Salisbury, and myself).

I want to thank all the scientists on the day operations crew and the deck hands for making me feel so welcome, being ever so patient as I learned how to bait hook, load the bandit reel, remove otoliths, sex the fish, and answer every type of question I had. They’re all amazing people and are passionate about their jobs. Kevin was not only great at thoroughly answering any and all questions, but anticipated those I might have and brought interesting things to my attention. Thank you everyone for an amazing experience that I’ll never forget!

Another incredible person that helped make my trip memorable is my roommate, NOAA Operations Officer, Kelly Schill. She was very welcoming and made me feel immediately at home on the ship. She gave me a thorough tour and introduced me to the crew. I interviewed her briefly about her job in the NOAA Corps.

LU: Kelly, what is your job title and what do you do?

KS: I am a Lieutenant junior grade in the NOAA Corps. The NOAA Corps is one of the 7 uniformed services and I serve as the Operations Officer aboard the NOAA Ship Pisces.

LU: How long have you been working with NOAA?

KS: I have worked for NOAA a total of 4 years; 3 of which were aboard the NOAA Ship Pisces as a NOAA Corps Officer. My first year, I was a physical scientist and developed geospatial visualizations to assist in the generation of navigational warnings and maritime safety information for Dangers to Navigation for the NOAA and contractor surveys. I assisted NOAA Ship Thomas Jefferson in the field with the acquisition, converting and cleaning of multi-beam and side-scan sonar data.

Aboard the NOAA Ship Pisces, my responsibility is to be the liaison between the ship’s crew and scientific party to ensure the mission is carried out smoothly and efficiently. A big part of my job is to handle the logistics and transportation, such as project planning and setting up dockage at different ports from Texas to the Caribbean up to Massachusetts. Most importantly, to continue to learn the intricacies of the ship, effectively operate, and practice safe navigation at all times.

LU: What background and skills are necessary for your job?

KS: A Bachelors Degree of sciences. You must complete a year of chemistry, physics and calculus. Geographic information System (GIS) is equally important. To be well-rounded, internships or field research experience is highly recommended.

Kelly with extracted otoliths — Kelly Schill showing off the otolith she just extracted from a Red Hind.

LU: What type(s) of training have you been through for your job?

KS: Being in the uniform service, I was sent to Basic Officer Training Course (BOTC) to learn military etiquette, terrestrial and celestial navigation, safety aboard ships, search and rescue, fire prevention, hands on experience in driving small boats up to larger vessels, etc. Once out of BOTC and on an assigned ship, I was able to attend further training: hazardous material courses, dive school, rescue swimming, and medical. There are many more opportunities that were offered. I have only touched on a few.

LU: Have you worked on other ships not associated with scientific research? If so, what was your job and what type of ship was it?

KS: No, all my experiences were on ships regarding scientific research: NOAA Ship Thomas Jefferson (hydrographic ship) and the NOAA Ship Pisces (fisheries ship).

LU: Does being on a science research ship bring any specific/different expectations than being on another type of merchant ship?

KS: I am unfamiliar with the expectations on a merchant ship. Generally, the research vessels are used to support studies intended to increase the public’s understanding of the world’s oceans and climate. Research vessels are not set on a point A to point B system. Various operations are conducted from fisheries, bathymetry, oceanographic, to marine mammal data collection. These various research projects dictate operation area. Contrary to research vessels, merchant ships usually have a set destination, from point A to point B transporting cargo of one type or another.

LU: We are in the middle of a huge ocean, and our destination – a specific sampling site – is a pinpoint on a map. What has to be considered to make sure you get to the exact location?

NOAA ship Pisces ECDIS map. This is a nautical map that is updated monthly.

Closeup of navigational maps showing the location of our sampling sites.

KS: We use a number of tools: ECDIS, Rosepoint, paper charts, GPS, Dynamic Positioning, and of course manual operation. The scientists will provide a location where they want the ship to be for operations to take place. We use all navigational tools to navigate to that position by creating a route, based on a good GPS feed. Navigational tools include: ECDIS (shows an electronic vector chart), Rosepoint (shows an electronic raster chart), and paper charts. Multiple navigational tools are for redundancy to ensure safe navigation.

All routes are created on the side of safety to avoid collision with shoals, wrecks, land, neighboring ships, platforms, buoys, obstructions, etc. Once, we are close to our sampling station, the ship is set up into the wind or the current (whichever force is stronger), reduce propulsion, turn rudder hard over to one side to assist in the reduction of propulsion and to line up on a heading in favor of wind or current. The bow thruster can assist in turns as well. Depending on how strict the mission is to hold an exact coordinate, the dynamic position is dialed in and activated. Otherwise, the watch stander will manually control the engine speed, bow thruster, and rudder to maintain position utilizing outside forces, such as wind, swell, wave state, and currents.

The ship's radar. — The ship’s radar. The yellow objects at the bottom are St. Thomas and its surrounding small islands, while other vessels will appear in green.

LU: Once we reach a site, what do you need to do to maintain that position during the sampling process?

KS: Every ship has its perks and not all are the same in maintaining a position during the sampling process. Our ship has dynamic positioning (DPS) which uses the rudder, propulsion, and a bow thruster simultaneously to hold position. However, just like any software system, it only works as well as the operator. The parameters have to be just right to accomplish this goal. Parameters are set up based on wind speed, swells, sea state, and currents. All must jive for a positive outcome. Our ship works more efficiently facing into the wind or current; whichever force is the strongest. If both are strong, we split the difference. Should either the bow thruster, main engine, or steering fail, the dynamic position will not properly compensate.

Dynamic Positioning System (DPS) screen. This instrument helps hold the ship at a precise location.

Kelly, thanks for the interview as well as being a great role model for women! Remember, girls, if you want it, go get it!

September 30, 2011April 28, 2021

Marian Wagner: My Final Words and Hurricane Irene’s in Charge, August 23, 2011

NOAA Teacher at Sea
Marian Wagner
Aboard R/V Savannah
August 16 — 26, 2011

Mission: Reef Fish Survey
Geographical Area: Atlantic Ocean (Off the Georgia and Florida Coasts)
Date: Tuesday, August 23, 2011

A fine bunch to live with at sea — A Fine Bunch to Live with at Sea: Front: Katie Rowe (Scientist), Sarah Goldman (Scientist Watch Chief, Night), Stephen Long (Scientist), Warren Mitchell (Lead Scientist). Middle: Marian Wagner (Teacher-at-Sea), Shelly Falk (Scientist), Christina Schobernd (Scientist, Video). Back: John Bichy (Marine Technician), Richard Huguley (Engineer), Harry Carter (2nd Mate), Raymond Sweatte (Captain), Michael Richter (1st Mate), David Berrane (Scientist Watch Chief, Day), Mike Burton (Scientist). Missing: Joel Formby (Master of the Galley)

Weather Data from the Bridge (the wheelhouse, where the controls of the ship are)

E-NE Wind at 10 knots (This means wind is travelling 10 nautical miles per hour,
1.15 statute miles = 1 nautical mile)

Sea depth where we traveled today ranged from 33 meters to 74 meters

Seas 2-4 feet (measure of the height of the back of the waves, lower the number = calmer seas and steadier boat)

Science and Technology Log

IRENE: On Tuesday evening, we discussed the impact of Hurricane Irene on our cruise plans, and scientists and crew needed to make a decision about when we should return to dock. Originally, the plan was to return in the morning on Friday, August 26, but due to projections of Irene, they predicted that the seas would be too rough for us to lay traps beyond Wednesday (8/24). When the seas are too rough, the traps bounce around and cameras do not pick up a steady, reliable picture. When seas get to be 6-7 feet+ on a boat the size of the R/V Savannah (92 feet long), it also makes our work (and life) on the boat very difficult. Additionally, with Irene’s landfall projected in North Carolina, where half of the scientists live, they would need to get home in time to secure their homes and potentially evacuate. Not in the case of Irene, but if a hurricane was expected to hit Savannah/Skidaway, where the boat moors, the ship’s crew would need to prepare for a hurricane-mooring. To do this, they would run the ship up the Savannah River and put on a navy anchor that weighs 3,000 pounds. Even with the use of the electric crane, it’s not an easy task to pull a 3,000 pound anchor onboard. This would not be done unless a direct hit to the area was expected. It has been done once before to the Savannah in the 10 years of her existence. The forecast did not project Savannah to be affected by Irene, so we did not need to prepare for a hurricane mooring.

After difficult deliberation on Tuesday night about hurricane Irene’s potential Category (see how hurricanes are ranked here), and considering the success of the research accomplished on the trip already, scientists decided the most practical and reasonable decision was to dock Tuesday night, unpack Wednesday morning, and allow North Carolina scientists to return to their homes by Wednesday night. (From reports I received post-Irene, there was landfall of the hurricane eye over their houses, but the storm weakened between Wednesday night and Saturday and was Category 1 when it came ashore. None of them sustained significant loss. Many downed trees and three days without power, but no floods or structure damage. Phew!)

NOAA’s National Weather Service is the sole official voice of the U.S. government for issuing warnings during life-threatening weather situations. Follow Seattle’s “Weather Story” at NOAA’s National Weather Service.

OUR RESEARCH PROCESS…A STORY CONCLUDED

Here on my final blog entry, I want to finish the story of our research process. Here’s the story I’ve told so far, in outline form:

research begins with baiting fish traps and attaching cameras, and we stand-by on deck
when we arrive at a research location with reef fish habitat (as observed via depth sounder and GPS), we drop the trap to the bottom and it sits for 90 minutes; buoys float above each trap so we can find and retrieve them near where traps were deployed, we run the Conductivity, Temperature, and Depth Profiler (CTD) to get information about abiotic conditions at each sampling site. The CTD takes vertical water column profiles, measuring: Pressure, Temperature, Conductivity/Salinity, Chlorophyll fluorometer, Color dissolved organic matter fluorometer (CDOM), Photosynthetic Active Radiation (PAR), Backscatter, Dissolved oxygen, and Transmissometer -10 and 25 cm path lengths
after 90 minutes have passed, we return to the traps and pick them up, and secure the fish caught
we identify each fish, measure length, weight, and frequency (how many fish were caught), and then keep the fish that our research is targeting
in the wet lab, we dissect target fish, removing parts of fish that are sent back to the lab for further research

AT THIS POINT, WE ARE DONE with our research with the bodies of the fish, but we have 99% OF THE FISH’S BODY LEFT! What should we do?

I was very impressed with the compassionate and humane action the scientists do with the fish after research. Scientific research guidelines don’t dictate what a research study should do with edible fish flesh. We could have just discarded fish back into the ocean. However, scientists see an opportunity to provide food to people in need of nutritional support in our communities, and they coordinated with a regional food bank in Savannah to do just that. Despite the work and time it takes to process the fish for donation, it did not seem to be considered a burden at all by any of the scientists.

Fillets in Freezer — Fresh fish fillets ready for food bank distribution

To process the fish for donation, we cut fish into fillets, wrap the fillets in butcher paper, and freeze them onboard the ship.

When we reached land, Warren
contacted the regional food bank, who came out to the dock with a refrigerated truck to pick up fish. Within a few days the fish was distributed through charitable organizations in the region to people who were most in need.

These scientists are not just natural scientists but social scientists too! (just as I fancy myself!)

Personal Log

Captain Raymond Sweatte and First Mate Michael Richter

Interview with Raymond Sweatte, captain of R/V Savannah

Marian: What makes a good crew?

Raymond: A crew that sees things that need to be done and does them because they know it all goes smoother when they do.

M: Have you ever run into or had a close call running into another ship?

Raymond: No, but the closest I came was when I was passing under the bridge at the Skidaway when a barge was coming through at the same time. Because it was easier for me to maneuver, I pulled over to side to let the barge use the majority of the channel. But the barge stayed on my side of the channel and was coming right at me. My boat was leaning upon the bank so there was no where for me to go. I got him on the horn and asked, “What’s going on?” He pulled over right away. He was new and very apologetic.

M: Have you ever been in a terrible storm before?

Raymond: A few times we’ve had 15-16 foot seas coming back from the Gulf. When you have a north wind at 35 knots [strong wind coming from the North] and north-going current opposing the wind, the seas get very rough. Waves were coming up over the ship. [picture Marian’s eyes VERY wide at this point in the conversation] When seas are really rough, you get lifted up out of bed and down again. I remember trying to sleep one night in rough seas when my head kept hitting against the wall, so I turned around so my feet were up hitting against the wall.

M: What were things like before radar, satellite, and so many electronic navigation tools
you use today?

Raymond: Things were not as accurate. Communication was on a single sideband, navigation was with Loran-C, though VHF radio was somewhat the same as now. To follow ships and determine their speed we had radar on dash but we had to use an eye cup we looked into to correlate with the radar, and then go over to the chart to plot them. Then, we did it again six minutes later and multiplied by 10 to find their speed. Now we have an automatic identification system [we can click on a ship on the radar] that tells us where they are, who they are, where they came from, where they are going, and what they are doing.

M: What are the right-of-ways when vessels are crossing paths; who moves when two vessels are in course to collide?

Raymond: [On ships, aircraft and piloted spacecraft] a red light is on the left or port side of the craft and a green is on the right or starboard side. When two vessels have crossing paths, each will see a red or green light. If you’re looking at another vessel’s port side you see red, and it’s his right-of-way. If you are on their starboard side, you see the green light, and the right is yours.

Also, right-of-way rules give priority to vessels with the most difficulty maneuvering. The ranks in right-of-way, starting with the highest are:

1)Not under command

2)Restricted in ability to maneuver

3)Constrained by draft (stay away from shallower water to avoid running aground)

4)Fishing

5)Sail

6)Power

7)Sea Plane

Remember this mnemonic: New Reels Catch Fish So Purchase Some.

M: Who’s easier to talk to, a Navy Sub Captain or a Coast Guard Helicopter Pilot?

Raymond: I don’t have a problem talking with any of them. Coast Guard generally would call you first. Navy sub pilots I’ve found to be very cordial. They have changed their course when we had traps out.

M: What message would you say to students interested in being a captain?

Raymond: All kids have to follow their own heart. If they like water and this environment, they should follow their heart and become a captain.

Thank you Captain Raymond! It was a genuine pleasure to talk to you and experience life at sea under your command and with such a stellar crew. It is no wonder you are revered by everyone you work with. Read more about Captain Raymond Sweatte in the Savannah Morning News!

The powerful significance of this trip for me was that I did not just study a science lesson from a book or lab, but I was essentially given a chance to live a different life, that of a fisheries field biologist. I did not dabble in the work; it was a full explosion into the curiosities, reasonings, and daily routines of working with live fish and fish guts while sharing friendship, humor and stories with scientists and crew aboard a boat that was a small bounded island of rich human culture within a vast ocean of life and scientific questions waiting to be answered. I loved it. If only I didn’t love teaching more…I could definitely live that life. Thanks NOAA, thanks NC SEFIS folks, thanks SC DNR folks, and thanks Skidaway Institute of Oceanography folks. You are all in my heart and in my classroom!

FASCINATING EXTRAS!

At night especially, when looking out at the seascape, I noticed flying, bug-looking specimens scurrying out of and into the ocean’s surface. WHAT WERE THEY?! I wondered. So I asked and learned they were FLYING FISH! A few of them flew right up on the vessel’s work deck. Their wings are modifications of the pectoral fins. They are so fascinating and their coloring was greenish/blue iridescence, a stunningly beautiful color!

RED SNAPPER: PROTECTED STATUS

“The Gulf and South Atlantic red snapper populations are currently at very low levels (overfished), and both red snapper populations are being harvested at too high a rate (overfishing).” See more where this quote came from at Fish Watch: US Seafood Facts.

It was clear to me how significant the concern for the red snapper population was when I learned that funding for this fisheries survey was drastically increased following the recent determination that red snapper were overfished and overfishing was occurring. Fisheries managers, field biologists and members of the general public all want to see the red snapper population improve. This cruise provided scientific data that will be useful when the status of the U.S. South Atlantic red snapper population is assessed again.

Lionfish, invasive species — The lionfish's spines are so poisonous the only way to hold them is placing fingers in their mouths.

History of measuring speed in NAUTICAL MILES:

Wonder how a vessel’s speed was measured hundreds of years ago? Log Lines, knotted ropes with a log tied to one end and knots every nautical mile and one-tenth of a nautical mile, were tossed off the end of the ship while the knotted rope unraveled behind it. When the sand on a minute sand glass ran out, the rope was reeled back in and the knots counted to determine ship’s speed in knots-per-minute.

LIONFISH: INVASIVE SPECIES

In its native waters of the Indian and Pacific Oceans, the lionfish population is not a problem. There it has natural predators and natural parasites to keep it from overpopulating, yet it can survive well enough to maintain a healthy sustainable population. However, in the Caribbean waters and along the Eastern Coast of the United States, the lionfish has recently been introduced, and the effects are alarming. “Lionfish have the potential to become the most disastrous marine invasion in history by drastically reducing the abundance of coral reef fishes and leaving behind a devastated ecosystem.” See more where this quote came from at NOAA’s research on invasive lionfish here. In the U.S. south Atlantic, they consume large quantities of reef fish and have no natural predators or parasites. Their population is thriving in large numbers, and it is devastating other fish species. Mark Hixon, Oregon State University zoology professor, co-authored a study in 2008 with Mark Albins that showed “a lionfish can kill three-quarters of a reef’s fish population in just five weeks.” Read NPR story here. This is a cool way to view an environmental problem: see this animated map of the lionfish invasion! Red Snapper

July 15, 2010April 15, 2021

Kimberly Lewis, July 15, 2010

NOAA Teacher at Sea Kimberly Lewis
NOAA Ship: Oregon II
July 1 -July 16, 2010

Mission: SEAMAP Summer Groundfish Survey
Geographical Area of Cruise: Gulf of Mexico
Date: Sunday, July 15, 2010

One more day for me, many more days for the scientist who monitor our seas

Birds, Sharks, Fish, Water Chemistry……. Everything needs to be monitored for the ‘big picture’

Date: Wednesday July 14, 2010Weather Data from the Bridge
Time: 1115 (11:15 AM)
Position: Latitude 28.59.313 N, Longitude 94.28.958 W
Present Weather: partly cloudy
Visibility: 8 nautical miles
Wind Speed: 11.21 kts
Wave Height: 3 feet
Sea Water Temp: 29.7 C
Air Temperature: Dry bulb = 30.1 degrees Celsius; Wet bulb = 26.3
Barometric Pressure: 1017.50 mbScience and Technology Log
(this log is a little lengthy, but very important concepts)Southeast Fishery Bulletin released a statement on July 12, 2010 regarding the Shrimp Fishery to re-open on July 15, 2010 off the coast of Texas. Data that we have been collecting on board the Oregon II is sent daily to the regional office for review. From our data over the past week and data collected by the Texas parks and Wildlife Dept, the NOAA Fisheries Service has announced the size of the brown shrimp have reached a mark that allows the trawling to re-open from 9 to 200 nautical miles off Texas.

The shrimp fishery is closed annually off Texas to allow brown shrimp to reach a larger and more valuable size prior to harvest, and to prevent waste of brown shrimp that might otherwise be discarded due to their small size. http://sero.nmfs.noaa.gov/bulletins/fishery_bulletins.htm

During our sampling I have personally seen many sizes of shrimp. The past few days the brown shrimp have been very large. Personally, I have not seen shrimp this large before…… but living in Ohio most of our shrimp comes frozen and already beheaded.
When sexing shrimp the larger shrimp are usually female. This is the case with many species of organisms. As we are counting through the first 200 shrimp for data collecting, you can almost guess before looking what the sex of some shrimp will be just based on their size.

Tuesday the idea of whole ecosystem-based management was addressed.

An article by Hughes (2009) shows a relationship between species of seagrass and the species that they provide with habitat and/or food source. The data shows the importance of an ecosystem-based mgmt approach that incorporates interdependencies and facilitation among species (Hughes et al. 2009). This is the concept that is taking place by the US National Marine Fisheries Service (which is a department within NOAA) in relation to the “essential fish habitat” which approaches the protection of sea-grasses (Hughes et al. 2009).

What about the IUNC (International Union for Conservation of Nature) Red List? As of now, threats to biodiversity are often listen on a species-by species basis (Hughes et al. 2009). The research in the Hughes (2009) article suggests looking at connections between threatened species and their habitats…… ecosystem-based conservation. Again, the NOAA fisheries have already started this trend.

Some things that are done on the NOAA fisheries ships to maintain low variables throughout the years of sampling are keeping the same gear and using the same sampling methods. As far as site selection, the stations are random stratified. An example of this would be not going to the same station year after year, but sampling 20 stations in Area A. So the following year it may be another random 20 stations in Area A.

Habitat quality also plays a role in sampling. Commercial fishermen may question why NOAA chooses to sample in a place that has low or no fish, but it is important to monitor all areas. As the high quality habitat looses fish due to the fishing industry, fish from another area will move in. At first glance it may seem like the populations are fine, but if the other areas are being depleted because fish are moving into the prime area you start to see a shift in an ecosystem.

Here in the gulf we are not seeing any invasive species in our sampling areas, which is great news. A few years back some Australian jellyfish were making their way in, but you mainly see those closer to the coast. We have had good catches while we have been out, in other words a good proportion of organisms based on the depth of the water.

So finally what can I say about ecosystem management? Hooray for the US Nat’l Marine Fisheries!

Works Cited:

Hughes, R. Williams, S. Duarte, C. Heck, K. Waycott, M. 2009. Associations of concern: declining seagrasses and threatened dependent species. Frontiers in Ecology and the Environment: Vol. 7, No. 5, pp. 242-246.

in baskets — “Shrimp, eels, various fish, etc.”

Personal Blog:

We have finished up our Texas stations and we are headed to the Louisiana west delta. I have been scrambling around to get some good photos of the lab, the sea, etc. because it has hit me that I only have two more days on the boat.

Usually journaling and photo taking come easy for me on my summer expeditions, but this one has really been a lot of work. With 12 hour shifts and trawling happening all throughout the night, there is not much down time. Which is probably fine b/c you are in the middle of the sea on a boat. What else would you do? This isn’t a Carnival cruise line. Hahaha.

I have really adjusted to sea life and night shift. Each day when I get off of my shift I hit the bed hard…… and don’t wake up until 10pm!

Chefs Walter and Paul have continued to feed us all well, too good at times. Everyone on the ship has kept their day 1 attitude and hospitality toward me and the other volunteers. It can be tough living in a small place, but it seems to work well on the Oregon II.