Northern Gulf of Alaska – Page 3 – NOAA Teacher at Sea Blog

July 25, 2019July 28, 2019

Catherine Fuller: This Was Not A Drill, July 17, 2019

NOAA Teacher at Sea

Catherine Fuller

Aboard R/V Sikuliaq

June 29 – July 18, 2019

Mission: Northern Gulf of Alaska (NGA) Long-Term Ecological Research (LTER)

Geographic Area of Cruise: Northern Gulf of Alaska

Date: July 17, 2019

Science Log

For the love of jellies

Heidi and jelly — Heidi and the objects of her affection

Jellyfish (or jellies, since they’re not technically fish) are one of the “delights” of recovering instruments from the sea. Often, the CTD returned to the surface covered in brown slimy tentacles, as did the sediment traps on occasion, which needed careful removal. For most of us, the jellies were more of a nuisance, but for Heidi Mendoza Islas, the jellies are love.

Heidi was on the night shift, which I didn’t get to spend as much time with as I would have liked, and her research was based on nightly Methot net drops and subsequent jelly inventories. The Methot net is a 10-meter long net on a square metal frame (roughly 5 meters per side). The net is dragged off the side of the ship for 20 minutes and then recovered. Led by Dr. Ken Coyle, Heidi and the night shift team of Caitlin, Delaney and Adriana then counted the jellies, recorded their type and their volume by type. One night, Heidi’s jelly count reached nearly 900! In the brief time I did spend with the team, I saw Heidi’s passion for jellies in her eyes and heard it in her voice as she lovingly explained the different types they had caught, often exclaiming, “Isn’t it beautiful?” Indeed, watching them swim next to the ship on our calmest days, they were.

What do you want kids to learn from your research?

Heidi: I would like to let people know that there are a ton of jellies out there in the ocean. They are very resilient to changes in the environment such as warmer temperatures, higher salinities, and low levels of oxygen, so this can allow them to easily scale up on the food chain and they might take advantage over other species like larval fish. As part of my research, I would like to determine if any correlations exist among jellyfish biomass, the environmental variables, and the early life stages of pollock.

Methot net in the water
Methot net dipping under
Methot net up on deck
Catch full of jellies

Personal Log

This Was Not A Drill:

As on any ship, safety at sea is a top priority. Early on in the voyage, Artie Levine, the Third Mate, gave us a safety briefing that included learning how to handle a fire extinguisher as well as how to put on our immersion suits and find our muster stations (gathering places) in case of emergency. We were warned at that point that a drill would occur later in the trip. Kira (my roommate) and I studied the information card on the back of our stateroom door that listed the signals for various emergencies just so we’d be prepared. It’s a testament to how seriously everyone took the safety briefing that when the ship first started sounding fog signals a couple of nights later, many of us popped our heads out of our rooms, ready to muster!

Near the end of the second week, we were indeed drilled, although we were kindly given advance warning on the message board in the mess hall. In any type of emergency, each member of the science team is required to retrieve their immersion suits and PFDs from their rooms and report to their muster stations. In addition, you must have a hat (watch cap or trucker hat) and clothing with long sleeves. In order to reduce the stress of the event, the announcement of the drill is preceded by the statement, “This is a drill” repeated several times.

My exit from the ship was a little earlier than planned, but provided both the land and ship crew with essentially a live drill practice. I woke up the morning of July 12^th and found that I was experiencing severe vertigo from rolling over too quickly in bed overnight. Needless to say, it’s pretty miserable when it happens on a moving ship! Artie Levine, the Third Mate, and Christoph Gabaldo, the Chief Mate, came to take care of me and moved me to the infirmary. After my symptoms had calmed down some, it was decided that, since we were about an hour out of Seward by small boat, and that the ship was scheduled to move on to the Kodiak Line, that it would be best to bring me ashore. Artie took me in the next morning on the ship’s rescue boat. Pete, having some work he needed to do ashore, plus being a genuinely nice guy, came with me as well. Ed DeCastro, the Port Captain, met us at the dock, took me to get checked out and then found a place for me to stay. In talking to Ed, the ship and land crews do go over procedures for evacuation in theory, and they were actually grateful to be able to practice the procedures in reality without having a serious situation on their hands. I am grateful that they are prepared for any emergency, because I was taken care of very well. Thank you, Artie, Christoph and Ed, for you compassion and your professionalism!

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Operation Evacuation (VC: Bern Mckiernan)

Last thoughts…

I got on the ship not really knowing what to expect. Everything was pretty new to me, from being in Alaska, to the research, to being on a big ship. Despite my early exit, I thoroughly enjoyed the experience and the chance to meet a great group of people who really are unsung heroes for the research they are doing. Whether they were adding data to years of previous research or developing new ways to track changes in the ecosystem, they are on the front lines of climate change research. It was a privilege to be aboard the R/V Sikuliaq with them. Speaking of…the R/V Sikuliaq is an amazing ship with capabilities I only began to learn about. Thank you to Eric, our captain, for answering my questions about dynamic positioning and Z-drives. My respect also goes out to the crew as well for being professional in all regards and unfailingly helpful, from launching and recovering all of our nets and traps, to fixing stuck closets and to cooking 5-star meals.

The ship is is back out now, with some of the same science team on board. To them, and to the TAS who are out or yet to go, I wish you fair winds and calm seas!

Some memorable moments:

Clay conducting the music in his headphones while doing fluorescence testing

Heidi exclaiming, “Another beautiful girl!” whenever she found a female copepod

The food…it was 5-star at every meal! Doug’s midnight chocolate chip cookies were stellar

The night shift’s tales of how they stayed awake

Cribbage with Pete, Seth and Ana

Lunchtime talks with crew members Jim and Arnel

The “Grunden Girls” (Kate and Kira) on Calvet duty

Pete’s buoys disappearing…and then reappearing (not that we had any doubt)

Steffi and the “Loch Ness monster” (the sediment trap)

Questions of the day

Dan’s mealtime reports on the sea life he saw that day

The nightly run-down with Kira

The rowing machine!

Some of my favorite images:

July 25, 2019

Catherine Fuller: From Microplankton to Megafauna, July 13, 2019

NOAA Teacher at Sea

Catherine Fuller

Aboard R/V Sikuliaq

June 29 – July 18, 2019

Mission: Northern Gulf of Alaska (NGA) Long-Term Ecological Research (LTER)

Geographic Area of Cruise: Northern Gulf of Alaska

Date: July 13, 2019

Science and Technology Log:

Through the Microscope

Gwenn with microscope — Gwenn using one of the microscopes to look at phytoplankton.

Gwenn and labels — The Lady of a Thousand Labels, hard at work.

Dr. Gwenn Hennon will be starting as an Assistant Professor with the University of Alaska in the fall. Her interest is in the types of microbes, especially phytoplankton, that are in the water and what they are doing. She is studying what limits them, whether it is nutrients, light or other factors. She finds it interesting to try to find interactions between phytoplankton and other organisms, such as ciliates that are filled with chloroplasts that they steal, termed “kleptoplasts.” She investigates what microbes they stole them from, how the ciliate steals the plastid and how they maintain it. While a lot of algae have photosynthetic genes and controls in the nucleus, ciliates wouldn’t be expected to have those controls, but they must have some in order to keep plastids alive, and these need to have specific genes in order to control specific plastids. There is a trade-off between specificity of genes for certain plastids and being able to keep the plastids alive for a long time. Ciliates can also live by just eating other organisms, so another field of investigation would be to look at which genetics are used when organisms are switching between strategies. One goal of this research would be that, when looking at samples from various stations, someone would be able to say what the ciliates are doing without having to do experiments.

The NGA is a very complex ecosystem, and this cruise has shown me that any scientific investigation needs to have a very specific focus rather than a shotgun approach, in order to have productive results. There is so much to be studied that the potential amount of data that can be gathered is staggering.

Because the LTER has been funded for many years, there are great sets of time series to look at for some studies, but molecular data is fairly new and adds a lot to the picture. Gwenn’s work, and the work of others at the molecular level are just the beginning of an understanding of life at the microscopic end of the scale.

Dan and Gwenn on the observation deck. Dan’s always on the lookout!

Through the Binoculars:

Fin whales come fairly close to us out in the deeper Gulf waters.

Dan Cushing is the U.S. Fish and Wildlife seabird and mammal specialist and is here to investigate organisms at the large end of the size spectrum, compared to everyone else on board. His workstation is primarily the bridge of the ship, where he is on the lookout for birds and mammals. He records the species and number spotted, and the time and the GPS location of each sighting. He also logs environmental conditions such as fog and wave height that can affect visibility.

Dan comes from a small fishing town with a population of 3000. He wasn’t necessarily interested in birds specifically when he was young, but developed a gradual interest in them. He likes that working with seabirds combines aspects of being a wildlife biologist with aspects of being a marine biologist. Dan has done both land-based projects at seabird breeding sites and ocean-based surveys on small boats and large research ships. One project that he worked on included attaching sensors to diving birds to record water temperature, depth, and location. This provided information about water conditions as well as about the behaviors of the birds and their feeding patterns in those conditions.

The variation in distribution and feeding strategies of bird species make them a good indicator of what is happening to the environment at different levels in the ecosystem. For example, Dan used small-boat surveys to look at changes in marine bird populations in Prince William Sound. He found that, over a period of two decades, declines had occurred in almost half of the species he looked at. In general, species that occurred farther from shore and fed on zooplankton and fish had greater declines than those that fed on prey along the shoreline and the nearby seafloor.

Studying the changes in a bird population leads to investigations that connect down the food chain through fish species to plankton (which, of course, is the focus of this cruise) and finally to climate change. Dan sees changes in the availability of fish species having a direct effect on the economic health of Alaskan communities that depend on fishing to survive. Coming from a fishing community, this hits home for him. As smaller species respond to climate change, a ripple effect works its way up the food web and so human populations must also alter their survival strategies as well.

One of Dan’s feathered friends coming in for a landing off the working deck.

Gulls watch the working deck with interest in hopes of food (not going to happen).

Personal Log:

The longer I’m on board, the more the pieces of the puzzle seem to come together. On thing that really strikes me about the teams on board is the intensity of their research and the drive they have. Each person here is making the most of their opportunity for data gathering. Gwenn, for instance, I have nicknamed “the lady of a thousand labels” because her work ethic and preparedness are so impeccable. She is just one example of the discipline and passion I see on board.

There is enough potential data to be gathered here to provide for years of research. Each of these researchers is not only singularly focused on their specialty but also well aware of the underlying premise of their research, i.e. that what they’re studying will serve to document climate change. Already, this year has brought anomalous weather to the Gulf, which, in a sense, makes conclusions about how and why changes occur a bit difficult. Another thing that is noteworthy on this cruise is that, because there are PIs (Principal Investigators) on board, there is a lot of discussion of ideas and plans for collaboration. Already, Gwenn, Suzanne, Hana and Clay have been talking about a potential project where their ideas intersect. The amount of time we’re out allows for more interaction between people and more room for ideas to develop.

Finally, as I ask each person what they want kids or the public to know from their research, the answers I am getting all focus on the same thing: change is happening and every organism on the planet is affected by it.

map of the shelf — An image of the shelf; the data station lines cross over this to get a complete range of samples from shallow to deep in order to understand the complexity of the ecosystem and the changes happening within it.

What do you want kids to know about your research?

Gwenn: All things are related to each other. All species on earth developed from the same ancestral single-celled organisms.

Dan: If you don’t pay attention to what’s around you, you won’t see how it changes.

July 25, 2019

Catherine Fuller: National Mooring Day, July 11, 2019

NOAA Teacher at Sea

Catherine Fuller

Aboard R/V Sikuliaq

June 29 – July 18, 2019

Mission: Northern Gulf of Alaska (NGA) Long-Term Ecological Research (LTER)

Geographic Area of Cruise: Northern Gulf of Alaska

Date: July 11, 2019

Weather Data from the Bridge

Latitude: 59° 00.823 N
Longitude: 148° 40.079 W
Wave Height: 1 ft, ground swell 3-4 ft
Wind Speed: 5.4 knots
Wind Direction: 241 degrees
Visibility: 5 nm
Air Temperature: 13.3 °C
Barometric Pressure: 1014.6 mb
Sky: Overcast

Science and Technology Log

At home, I regularly check information from the buoys that literally surround our islands. They give me real time, relevant data on ocean conditions and weather so that I am informed about storm or surf events. We also have buoys that track tsunami data, and the accuracy and timeliness of their data can save lives. Deploying and monitoring these buoys is a job that requires knowledge of ocean conditions, electronics, rigging and computer programming.

preparing buoy system — Pete (foreground) and Seth set up the buoy system in preparation for deployment

buoy anchors — The anchors for the buoys were made of train wheels

Pete Shipton is onboard as the mooring technician from UAF’s Seward Marine Center. This morning, he, Dr. Danielson and the crew deployed three moorings near oceanographic station GAK6i (about 60 miles offshore in the Northern Gulf of Alaska) at a depth of 230 meters. The search for the right depth required that R/V Sikuliaq do an acoustic survey of the area last night to find a kilometer-long area of the right depth and bottom slope. The three moorings will be situated close enough to each other that for all purposes they are collecting a co-located set of readings representative of this site, yet far enough apart, with small watch circles, that they don’t overlap and foul each other. The set of three is designed to have one surface buoy on either side with sensors at the surface and through the water column and a third buoy in the middle with sensors also distributed across all depths.

The first buoy, GEO-1, gives information on physics, optics, nutrient
chemistry and has a profiling instrument that will “walk” up and down the mooring wire from about 25 m above the seafloor to 25 m below the surface, collecting profiles four times a day. The mooring has many of the sensors that the ship’s CTD has, including an ADCP (Acoustic Doppler Current Profiler), a weather station with a GPS that measures wind speed, relative humidity, sea level pressure, and air temperature. The buoy system was designed to withstand and operate in 8 m waves; in larger waves the surface buoy is expected to become submerged. At one meter of depth, GEO-1 measures the temperature, salinity, chlorophyll fluorescence and photosynthetically available radiation.

On GEO-2 (the center buoy), similar data is recorded at 22 m below the surface. There will also be a sediment trap, mammal acoustics recorder, particle camera, and an AZFP (acoustic zooplankton fish profiler), which has four frequencies that can detect sea life from the size of fish down to the size of zooplankton. It records sound reflections from all sizes of creatures and can see fish migrations during day or night within a range of 100m (from 100m depth to the surface).

Buoy GEO-3 is the primary “guard” buoy, or marker for the whole set. It also has a real-time transmitting weather station and near-surface measurements.

Linking the mooring lines and the anchors are acoustic releases,
which are remotely controlled tethers whole sole function to listen for a “release” command that will tell them to let go of the anchor. Since the limiting factor on the instruments is the life of the batteries, they will be picked up in a year and the acoustic release will allow the instruments to be brought back aboard Sikuliaq. These buoys will be providing real time information for groups such as the Alaska Ocean Observing System (www.aoos.org) about weather and ocean conditions, while also collecting
information about sea life in the area.

Pete and Seth on buoy — Pete (left) and Seth (right) test the stability of the buoy

Deploying the buoys was a lengthy process that required careful
coordination of parts, lines, chains and personnel. Luckily everything
went off perfectly! As the anchor weights for the two surface buoys deployed, they briefly pulled the buoys under, causing a bit of joking about whether the line length was calculated correctly. The brief “dunk test” was an excellent first trial for submergence during this coming winter’s storm conditions.

The second buoy briefly scares us by going under!

MarTechs:

There are opportunities for careers at sea in a wide variety of positions on board a research vessel. One of the most interesting is the MarTech (Marine Technician), because of their dual role during a scientific cruise.

The Marine Technicians are technically assigned to the science team although they are a part of the ship’s crew. Bern and Ethan are the MarTechs on this cruise and both work specifically with R/V Sikuliaq. They are considered a part of whatever science team is on board at the time. The MarTechs are on 12-hour shifts, from 8:00 to 8:00. Ethan is on at night, and Bern is on during the day, although there is some overlap. The two men help to deploy and recover instruments for the science team and as well as helping the crew with any deck operations. They also are responsible for the computer lab and overseeing the data displays and production from the various sensors, as well as maintaining the instruments on the ship that provide information. Although they are always at hand to help when we need it, you will often find them also repairing and upgrading ship’s equipment and helping with engineering tasks.

Bern sets up camera — Bern setting up one of his cameras.

Bern has been a MarTech on R/V Sikuliaq since 2013, and had previous experience on other research vessels, both American and international. Bern is also the ship’s unofficial documentation guy; he has a number of small cameras that he regularly uses to capture the action on board, whether from the vantage point of one of the cranes or on top of his own helmet. You can find examples of Bern’s camera work on R/V Sikuliaq’s Instagram site (@rvsikuliaq).

Ethan and Ana — Ethan helps Ana with the iron fish.

Like Bern, Ethan has also worked on other research vessels but has been on R/V Sikuliaq since it was built. This is the only ship he’s been a MarTech on. His interest in oceanography, especially marine acoustics, led him to this career. Marine acoustics is more than just listening for large species such as whales. There are acoustic sensors that “listen” to the ship and help ensure that it is functioning normally. Other acoustic sensors, such as the ones based in the open keel of the ship use sound technology to map the ocean floor as we progress on our path. Ethan was kind enough to show me the keel and explain the instrumentation. In addition, there are instruments that constantly record salinity, temperature, current strength, solar radiation and other measurements along the path we travel to provide a more complete picture of the environmental conditions existing at every point.

The ship’s acoustic instruments are mounted in the open keel; it’s open to the sea!

The marine technicians manage the computer lab when they are not needed for operations. This lab is the nerve center of the ship and allows the science team to work closely with the bridge to coordinate the movement of instruments and the speed of the vessel through the water to achieve optimum results. You can find information on meteorology, navigation, engine performance, depth sounders, closed circuit monitors, ship acoustics and deck winch statistics by looking at specific screens. In addition, the staterooms have monitors that also allow viewing of certain screens.

By far the two displays that are followed most closely are the CTD cast screens and the AIS screen. The AIS screen gives our course on a map, and shows our progress as well as future waypoints. It also shows our speed and bearing to our next point as well as ocean depth and wind speed and direction. The CTD screen shows real-time results in a number of categories such as salinity, oxygen, chlorophyll, temperature, nitrates and light as the CTD descends and ascends through the water column. Based on the results of the down cast, the teams determine the depths from which they’d like water samples collected as the CTD rises.

The CTD screen looks like spaghetti until you understand the color code for each line.

The Bridge:

The equipment on the bridge represents the pinnacle of technology as far as ship operations go. The captain’s chair has been described by some members of the science team as the “Battlestar Galactica” or “Star Trek” chair, and it really does look like it fits in a science fiction movie. Displays on the bridge show performance of the engines, radar returns and our bearing and range from them, and any other pertinent information to vessel performance. Ship movement and waypoints are hand plotted by the second mate, who also oversees ship movement along with the captain, chief mate and third mate. The ship’s officers work the bridge on a rotating watch schedule. One of the cool features of this ship is that it operates two Z-drives, similar to what is used on tugboats. These are propellers that can move independently of each other and turn in any direction. They allow the ship to be maneuvered precisely, which is a great help when we need to stay on a station through multiple operations. Various views of the bridge and the navigational instruments used by the ship’s crew are shown in the gallery below.

View of the bridge
View of the bridge
View out the bridge
The Captain’s Chair

Captain Eric Piper shows off his new jacket

Personal Log

Happy Mooring Day! It’s our self-declared “national holiday”! Because the process of deploying the moorings and buoys took up all of the morning and a part of the afternoon, most of the rest of the science team took the morning off and slept in. So many of them ran on the treadmill that running might become a part of our “holiday” tradition. My roommate even took bacon back to her room to eat in bed. Gwenn brought out her Twizzlers…somewhat appropriate because they look like steel cable (even though the moorings did not use cable). It was a nice breather for the science team, who have been working very hard to collect samples and run experiments. Somewhere along the line, the idea of making Mooring Day a “holiday” caught on, and it’s become a bit of a joke amongst the team. We’re down to a week to go, and everyone is beginning to think about what happens when we get in and when we all go home. But… we’re not quite there yet, and there’s a lot of work left to do.

Animals Seen Today

We apparently have a stowaway…a small finch-like bird that flits about the ship. It must have joined us when we were near land, and now we ARE the land.

July 5, 2019

Catherine Fuller: Out of the Sea and into the Lab, July 3, 2019

NOAA Teacher at Sea

Catherine Fuller

Aboard R/V Sikuliaq

June 29 – July 18, 2019

Mission: Northern Gulf of Alaska (NGA) Long-Term Ecological Research (LTER)

Geographic Area of Cruise: Northern Gulf of Alaska

Date: July 3, 2019

Weather Data from the Bridge

Latitude: 58° 54.647’ N
Longitude: 146° 00.022’ W
Wave Height: 4-5 ft.
Wind Speed: 1.9 knots
Wind Direction: roughly 90 degrees, but variable
Visibility: 1 nm
Air Temperature: 13.2 °C
Barometric Pressure: 1014.4 mb
Sky: Clear, then foggy

Weather overview

We have been fortunate so far to have very calm conditions. Winds have been variable or light and are expected to continue to be so through the weekend at least. Wave heights have generally been about 3 feet, although they’re up to 4-5 feet today, and are expected to drop tomorrow. The calm weather is critical for some of the testing being done, and thus is allowing more to happen.

Science and Technology Log

The focus of all of testing on board is plankton. As the base of the food web, all species depend on their health and abundance for survival. There are multiple teams who are focused on various aspects of plankton and their reaction to environmental conditions. Kira Monell is a graduate student at the University of Hawaii at Manoa who is working under the direction of Dr. Russ Hopcroft while on board. She is studying zooplankton, or the animal version of plankton. She is specifically focusing on Neocalanus flemingeri, a type of sub-arctic copepod. It is important to study zooplankton because they provide a link between phytoplankton (the plant version of plankton) and larger fish on the food web. Copepods are extremely abundant and varietal, found just about everywhere in the world. They are an important food source for most aquatic species (they exist in both salt and fresh water). They are a trophic link – a connection in the food web. Her target species is special because they mostly eat phytoplankton during the seasonal plankton blooms. They convert their food into a lot of lipids (fats) and thus are great sources of food and energy for larger fish. After fattening up, they go deep into the ocean to hibernate around mid-summer.

Kira is specifically focused on the termination of their hibernation (technically called diapause). She is doing genetic testing to see which genes are activated or deactivated during this phase of their lives. Messenger ribonucleic acid (or mRNA) coded by these genes is required to construct the enzymes that cause changes in body functions, so she is looking at levels of different mRNA in the copepods. She is expecting to see an increase in genes relating to oogenesis (egg formation). Her female copepods go into diapause ready to start making eggs, so she expects to see changes in genes relating to egg growth as they come wake up from diapause.

Kira is examining copepods through three different experiments. With some samples, she adds a stain called EDU (a dye that labels cells that are just about to divide) into her samples and then checks them at 24 hours to see which cells have divided. Because the copepods are still alive, she can check back to see what further cell division have happened over longer periods of time. A fluorescent microscope is required to see the EDU. Scientists still struggle to understand what actually triggers emergence from diapause since deep water copepods don’t experience seasonal light changes, or other potential triggers that might exist on the surface.

Another thing she is looking at is in-situ hybridization. She makes a tag that is very specific for the gene she wants to examine. When the probe gene is introduced, it attaches to the gene she wants to look at only if it is being actively copied. Kira then attaches a colored or fluorescent dye to the probe and in that way she can track which genes are being expressed in specific areas of the body.

The third project that she is working on is trancriptum analysis, which requires building a complete “catalog” that shows all the RNA used by a species. She can then look at which gene transcripts are present, and in how abundant they are, so as to compare them to the “average” version of a transcriptum to see which genes are being turned off and on under certain conditions.

To obtain samples of copepods, the zooplankton team, including Kira, uses Calvet nets. These are four long nets that terminate in collection tubes. Weight is added to the bottom of the nets and they are submerged off the stern to 100 meters of depth and then pulled back up (a process that takes roughly five minutes). The nets are then rinsed to collect the samples in the tubes, which are transferred into jars and brought to the lab for more detailed sorting and examination.

Calvet rising — The Calvet is returning to the surface after being submerged

Kira and Kate rinse net — Kira and Kate rinse the length of the nets to collect their samples in the tubes in the end.

As the Calvet rises you can see the full net. (This video has no dialogue.)

Personal Log

back deck — This is the main working deck at the stern of the ship.

Getting prepared to go out on deck safely!

Boots
Hard hat
Life vest
Cat on Deck

All of the sample collection happens on the working deck at the stern of the R/V Sikuliaq or in the adjacent Baltic Room. The back deck is equipped with a variety of cranes and winches that are designed to handle heavy weights and lines under tension. As such, it is critical to wear the proper protective gear when you’re out there: boots (preferably steel-toed), a hard hat and a flotation vest of coat. If there’s a potential to get wet or dirty, rain gear or waterproof bibs are essential to stay dry and relatively clean. Being properly dressed is a process that took getting used to, but now it’s habit. Again, we’re lucky to have had good weather, so the deck is usually warm enough to wear a t-shirt and jeans. I find it calming to be outside, so I am enjoying learning about the sampling methods of other teams by watching and sometimes assisting them. There are also observation decks at the bow that do not require safety gear. A few of us have discovered that the forward decks are much quieter and are good spaces to decompress and look for sea life.

Animals Seen in the Last 24 Hours:

We’ve seen a few species of birds including black turnstones, glaucous-winged gulls, Black-winged kittiwakes, as well as deeper water birds such as storm petrels and shearwaters. In addition, there have been small pods of dolphins in the distance and one humpback whale (all we saw was the tail).

July 3, 2019July 25, 2019

Catherine Fuller: Maintaining Balance, July 1, 2019

NOAA Teacher at Sea

Catherine Fuller

Aboard R/V Sikuliaq

June 28 – July 18, 2019

Mission: Northern Gulf of Alaska (NGA) Long-Term Ecological Research (LTER)

Geographic Area of Cruise: Northern Gulf of Alaska

Date: 1 July 2019

Weather Data from the Bridge

Latitude: 60’ 15” N
Longitude: 145’ 30” N
Wave Height:
Wind Speed: 7 knots
Wind Direction: 101 degrees
Barometric Pressure: 1020 mb
Air Temperature: 13.2° C
Relative Humidity: 94%
Sky: Overcast

Science and Technology Log

When I read some the material online about the NGA LTER, what struck me was a graphic that represented variability and resiliency as parts of a dynamic system. The two must coexist within an ecosystem to keep it healthy and sustainable; they must be in balance. On board, there is also balance in the studies that are being done. The Main Lab houses researchers who are looking at the physical aspects of the water column, such as sediment and plankton. The Wet Lab researchers are looking at the chemical aspects and are testing properties such as fluorescence, DIC (dissolved inorganic carbon), and DOC (dissolved organic carbon).

Working deck — This is the working deck of the ship, where the majority of equipment is deployed

Today we deployed Steffi’s sediment traps, a process during which balance was key. First of all, each trap was composed of four collection tubes arranged rather like a chandelier.

These were hooked into her primary line. Her traps were also attached to two sets of floaters: one at the surface and one as an intermediary feature on her line. These allowed her traps to sit at the proper depths to collect the samples she needed. The topmost trap sat 80m below the surface, while the next three were at subsequent 25m intervals.

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Bern’s time lapse of the sediment trap deployment

hazy sound — Steffi’s traps were released against the background of the smoky sound.

We also collected more samples from another run of the CTD today. Again, the Niskin bottles (collection tubes) were “fired” or opened at various depths, allowing sampling through a cross section of the water at this particular data point PWS2. Unlike our previous collection, these samples were filtered with .45 micron mesh to eliminate extraneous particles. This is a very careful process, we needed to be very careful to eliminate air bubbles and replace the filters regularly as the clogged quickly. For one depth, we did collect unfiltered samples as a comparison to the filtered ones. Many groups use the CTD to collect samples, so there must also be careful planning of usage so that there is enough water for each team. Collection is a complicated dance of tubes, syringes, bottles, labels and filters all circling around the CTD.

Steffi and buoys — Steffi looks over the sound as the buoys marking her traps recede into the distance.

Later this evening, we’ll have the chance to pull up Steffi’s sediment traps and begin to prepare her samples for analysis.

Personal Log

Balance is key in more ways than one when you’re living aboard a research ship. Although it’s been very calm, we experience some rolling motion when we are transiting from one site to the next. The stairways in the ship are narrow, as are the steps themselves, and it’s a good thing there are sturdy handrails! Other than physical balance, it’s important to find personal balance. During the day, the science work can be very intense and demanding. Time schedules shift constantly, and it is important to be aware of when your experiments or data collection opportunities are taking place. Down time is precious, and people will find a quiet space to read, go to the gym (a small one), catch up on sleep or even watch a movie in the lounge.

A couple of weeks before I left, the Polynesian Voyaging Society hosted a cultural group from Yakutat, who had shipped in one of their canoes down for a conference. We were able to take them out sailing, and the subject of balance came up in terms of the worldview that the Tlingit have. People are divided between being Eagles and Ravens, and creatures are also divided along the lines of being herbivorous and carnivorous. Rather than this being divisive within culture, it reflects the principle of balance. Both types are needed to make an ecosystem whole and functional. And so, as we progress, we are continually working on maintaining our balance in the R/V Sikuliaq ecosystem.

Animals seen today:

A few dolphins were spotted off the bow this evening, but other than that, Prince William Sound has been relatively quiet. Dan, our U.S. Fish and Wildlife person, remarked that there are more boats than birds today, which isn’t saying much as I’ve only seen three other boats.