sample sorting – Page 6 – NOAA Teacher at Sea Blog

June 10, 2009April 5, 2021

Duane Sanders, June 10, 2009

NOAA Teacher at Sea
Duane Sanders
Onboard Research Vessel Hugh R. Sharp
June 8-19, 2009

Mission: Sea Scallop Survey
Geographical Area: New England Coast
Date: June 10, 2009

Weather Data from the Bridge
Wind: Speed 19.4 KTS, Direction 86.8 degrees
Barometer: 1013 millibars
Air temperature: 14.2 ⁰C
Seas: 2-3 feet

Science and Technology Log

The primary mission of this cruise is to complete the second leg of a three-leg survey of scallop populations along the New England Coast. Other information about the scallop ecosystem is also collected. Scientists evaluate the status of the scallop fishery use data gathered from the survey. Decisions about which areas to allow commercial scalloping and which areas to close to commercial use are based on these surveys. These science-based management decisions help to promote long-term stability of the scallop industry.

Members of the day watch working at measuring stations.

After two complete watches, I think I understand the procedure. Stations to be sampled are determined by a stratified random sampling procedure. Computers, following certain parameters set by NOAA staff, determine which area is to be sampled. It is important to be consistent so that each station from each of the three legs of the cruise can be reliably compared other data from this survey as well as from other years. Once the captain puts the ship on station, an eight-foot wide dredge is lowered to the bottom and dragged for 15 minutes. The captain keeps the ships speed to a constant 3.8 knots. When the dredge is hauled in, its contents are dumped on a large steel sorting table that is bolted onto the to deck. The science team on watch sorts through the contents of the catch and separates all scallops into one basket, all fish into a different bucket and all the rest of the haul into another basket.

We then determine the total weight of the scallops and measure the length of each one. Thankfully we use a computerized system for determining the lengths which automatically record them. All of the fish are sorted by species, and then weighed by species. The length of each fish is recorded using the same system as for the scallops. The total volume of the remaining haul is estimated with each basket being equivalent to 46 liters. The general contents of the basket are characterized by types of shells found, types of substrate material and other organisms present.

Personal Log

I have been assigned to the night watch. This means we work from midnight to noon. Although I am doing better today, it has been difficult to adjust to sleeping during the day. I am sure that I will continue to adapt. As long as Paul, our cook, keeps preparing his delicious meals I will survive quite nicely!

I have really enjoyed seeing the variety of organisms that come up in the dredge. My favorites are the invertebrates. Some examples include different species of starfish, other mollusks beside scallops, and sea mice. A sea mouse is actually a marine worm in the group known as polychaetes. These strange looking creatures grow long, thin scales that looks like fur. Their bodies have the general shape of a mouse with no tail. There are also many fish species, which I am learning about, but they do not interest me as much as the other organisms.

June 9, 2009April 5, 2021

Jeff Lawrence, June 9, 2009

NOAA Teacher at Sea
Jeff Lawrence
Onboard Research Vessel Hugh R. Sharp
June 8-19, 2009

Mission: Sea scallop survey
Geographical area of cruise: North Atlantic
Date: June 9, 2009

Weather Data from the Bridge
S winds 5-10KT
Seas 1-2ft
Barometric pressure 1029mb
Air Temperature 78˚F
Visibility clear
Cold front moving offshore towards us later today, rain expected.

The contents of the dredge are emptied onto the sorting table.

Science and Technology Log

The sorting table is full of activity as soon as the dredge is pulled aboard the ship. After the crew secure all lines and dump the load the volunteers and scientist begin to sort through the biological that has been brought up from the bottom or the Atlantic Ocean. Each dredge can bring a varied amount of sea life on the ship. We are always looking for scallop, yet every third dredge we also sort for crabs. All fish are also sorted and counted.

After all the sorting is done the fish, scallops, and crabs are weighed and measured for length. They are then logged into the onboard computer for analysis of results for each catch. We are trawling along closed areas for scallops. These areas have been closed for commercial fishing to ensure that the population has time to recover in that area. Scallop surveys are carried out by the R/V Hugh R. Sharp, in three phases during the summer. Duane and I are on the second leg, which encompasses the area to the east of Delaware, areas around Long Island, and the area around Martha’s Vineyard south of Cape Cod, Massachusetts.

Personal Log

You may find some interesting creatures during sorting.

The work aboard the ship can be very long and laborious. The days are long, as each member of the cruise will do a 12-hour shift. My shift is from noon to midnight. The conditions can vary greatly during a shift. During the day the sun may be out with light winds and it gets very warm with all the wet weather gear that is worn during sorting. It is necessary to leave the gear on between dredges, since they occur so often. As soon as the sun goes down the temperatures can drop very rapidly. It is important to keep a hooded sweatshirt and other warm weather gear nearby for the changing conditions. All gear must be taken with you when you leave your cabin so that the other shift can sleep uninterrupted. The days are long, with the goal of all who are onboard to get the science completed in a timely fashion. Keeping a ship stored with goods and running is very expensive so the goal is to get as much science completed in the allotted time as possible.

Question of the Day
What other bottom dwelling species in the Atlantic are under protection from over-fishing?

Animals Seen Today
Scallops, eels, crabs, starfish, clams, silver dollars, urchins, goose fish, and many varieties of bottom dwelling fish.

May 19, 2009April 5, 2021

Elise Olivieri, May 19, 2009

NOAA Teacher at Sea
Elise Olivieri
Onboard Research Vessel Hugh R. Sharp
May 9 – 20, 2009

Mission: Sea Scallop Survey
Geographical area of cruise: Northwest Atlantic
Date: May 19, 2009

Weather Data from the Bridge
Air Temperature: 10.78 Degrees Celsius
Barometric Pressure: 1030 mb
Humidity: 71 %

Science and Technology Log

Taking part in the 2009 Sea Scallop Survey has been an experience of a lifetime. I learned how to identify many different species of fish, to use the FSCS computer system, and the many sampling techniques that are involved in fisheries research. I met some incredible people that inspire me to continue volunteering whenever I can for the sake of scientific research. I am very familiar now with many jobs and careers that one can have working for NOAA. My students will be very excited to see all the photographs and data that were collected on this survey. I have planed numerous activities where my students will use the data collected in the sea scallop survey which will help prepare them for the New York Schools Regents Examination. Some research scientists that I have met have promised to come and speak to my classes and educate my students on the many careers that NOAA offers. My roommate Lollie Garay and I had such a remarkable time on the Hugh R. Sharp. Although we worked different shifts, we had a few hours each day to discuss some lesson plan ideas and share pictures with each other.

The watch team: (in order from left to right) Gary Pearson, Cristina Bascunan, Vic Nordahl, me, and A. J. Ward. — The watch team: (left to right) Gary Pearson, Cristina Bascunan, Vic Nordahl, me, and A. J. Ward.

I really enjoyed working with the night watch. My Watch Chief Geoff Shook really knows how to manage a team. He is full of information, patient, and extremely helpful. Cristina, Geoff, Steve, Glynn, A.J., and I really worked well together. The Chief Scientist Vic Nordahl is an amazing guy. He can multitask like no other person I have ever seen. He works on several different tasks at once while checking the data, and even making a little time for Lollie and me too! Kevin McIntosh is another incredible scientist. He and Vic are very busy running the Sea Scallop Survey but he also has made himself very available to Lollie and me whenever we have any questions. Kevin is always there to help with data and explain how different instruments work as well.

I really feel privileged to have had the opportunity to work with such a great group of people. I will never forget it! I have taken so much away from this trip, and my students will appreciate all the new knowledge I will continue to share with them. I am very excited to be returning home tomorrow morning. We are expecting a 10-hour steam tonight and hopefully we will arrive in Lewes, Delaware around 6:00 AM. The last thing we have to do tonight is clean our stateroom and the labs. This is easy work compared with all the tows we are accustom to sorting and measuring.

May 18, 2009April 5, 2021

Elise Olivieri, May 18, 2009

NOAA Teacher at Sea
Elise Olivieri
Onboard Research Vessel Hugh R. Sharp
May 9 – 20, 2009

Mission: Sea Scallop Survey
Geographical area of cruise: Northwest Atlantic
Date: May 18, 2009

Weather Data from the Bridge
Air Temperature: 10.44 Degrees Celsius
Barometric Pressure: 1020 mb
Humidity: 62 %

Science and Technology Log

Today was a great day. It was a little cooler than usual but many tasks were accomplished. I am now able to identify almost every species of fish that comes up in the dredge. I know how to run events and my night watch team works together in harmony. Everything ran so smoothly today, and I believe it is all due to the fact that we get along so well. I have become good friends with everyone on my watch and some day crew as well. Relationships are important when you’re living with all different people in close quarters.

I had a chance to talk with Steve Ellis today. He is a port agent for NOAA Fisheries North East Regional Office. He works with management plans and is a Fisheries Reporting Specialist. Port agents like Steve are stationed where major commercial activity is located. He works under the fisheries statistics office and monitors commercial fisheries landing in order to supply data for proper fisheries management. Steve tracks fishery events and maintains reporting requirements that operate in U.S. waters. This helps the government get quota for different species of fish along with their age and growth. This also becomes a part of our Gross National Product. Steve also helps interpret regulations and provides a link between fishermen and managers.

Glenn Rountree (left) and I sorting the animals in our buckets

I also got a chance to sit and talk with Glynn Rountree. He is a volunteer on this NOAA Sea Scallop Survey and he has been volunteering on many cruises since graduate school. So far he has been a volunteer on at least 50 cruises for the Environmental Protection Agency and NOAA. Glynn has a Master’s Degree in Oceanography and is very helpful in answering almost any question you have about various animals and fish. Glynn worked in research administration for 8 years, and now has a job with environmental regulation of home building. It is important to understand that you do not have to be a scientist to work in a science field. There are so many significant issues that will affect us directly that it is very important we stay educated on issues like global warming, climate change, and endangered species. We need more college students studying these issues not business administration.

Animals Seen Today

Windowpane Flounder, Fluke, Sea Cucumber, Gulf Stream Flounder, and Fourspot Flounder.

May 17, 2009April 5, 2021

Elise Olivieri, May 17, 2009

NOAA Teacher at Sea
Elise Olivieri
Onboard Research Vessel Hugh R. Sharp
May 9 – 20, 2009

Mission: Sea Scallop Survey
Geographical area of cruise: Northwest Atlantic
Date: May 17, 2009

Weather Data from the Bridge
Air Temperature: 13.61 Degrees Celsius
Barometric Pressure: 1012 mb
Humidity: 97 %

Here you can see the many different sizes of sea scallops.

Science and Technology Log

So Far the sea scallop survey has collected 76,170 sea scallops which can also be expressed as 9,251 kilograms. This is a tremendous amount of scallops and the survey is not even a third of the way complete. At stations where crabs and starfish were sampled we have collected 8,678 cancer crabs and 279,768 starfish (Asterias) so far. Without a reliable database like FSCS it would be impossible to keep up with such a large amount of information.

Today I got a chance to talk with Shad Mahlum. He is a seagoing technician for NOAA and was born and raised in Montana. He has experience working with freshwater surveys. In the past years he has studied how beaver dams influence native and non-native species of freshwater fish. Shad also spent some time looking at various cattle grazing strategies and how they affect food chains. Shad loves working on the open ocean and the physical process of sea scallop surveys. Shad hopes to work with freshwater and saltwater projects in the future.

Here I am holding a scallop and a Red Hake.

As I was gazing out into the deep blue sea a very large animal caught my eye. I was so excited to see another Finback Whale. They are the second largest animal on earth after the Blue Whale. They are known to grow to more than 85 feet. Finbacks are indifferent to boats. They neither approach them nor avoid them. Finback Whales dive to depths of at least 755 feet. They can grow anywhere from 30-80 tons. Finbacks eat Krill, fish and squid and their population numbers are approximately 100,000 or more. The only threats Finbacks have are polluted waters. It is incredible to see such a large animal breaching out of the water. I will never forget it.

Animals Seen Today

Wrymouth Squid, Eelgrass Slug, Razor Clam, Lobsters, Green Sea Urchin, Macoma clam, Sea Stars (Asterias), Horseshoe Crab, Fourbeard Rockling, Palmate Sponge, Hermit Crab, Black Clam, Golden Star, Tunicate, Winter Flounder, Surf Clam, Yellowtail Flounder, and Sea Mouse.