Exploring the foraging ecology of crabs and fish in Washington’s aquaculture areas

Karl Veggerby

Washington State is the leading aquaculture shellfish producer in the United States and shellfish aquaculture has been a culturally and economically important part of the Pacific Northwest landscape for thousands of years. As part of his thesis project, SAFS master’s student, Karl Veggerby, explored the foraging ecology of crabs and fish inside shellfish areas.

The aim? To quantify how shellfish farms are used as foraging habitat for common nearshore species of fishes and crabs compared to unfarmed eelgrass meadows and mudflats.

A collaborator (Bridget Ferriss) pushes a PVC marking stake into the mud in front of several cameras. The PVC stakes act as markers to delineate a one-meter square area.

Using direct observations of species-specific behaviors in the Puget Sound from underwater video to model how habitat type affected observed foraging rates, the key objectives were to discover:

  • How habitat type influenced observed feeding behavior
  • How substrate cover (i.e. algae vs. eelgrass vs. bare) influenced observed feeding behavior
  • Whether structure affiliated species used structurally complex habitats for foraging more than structurally simpler habitats.
A clump of wild Pacific Oysters grows on top of a clam bed. Larval oysters often adhere to substrate as they begin growing, including each other!

Supporting the idea that shellfish aquaculture provides equivalent foraging opportunities was the lack of clearly defined differences in foraging probability observed between cultivated and uncultivated habitat.

The results of the project indicated that oyster and clam aquaculture habitat provide foraging opportunities for several common species of nearshore fish, particularly surf perch, sculpins and small flatfish.

Researchers (Karl on the right) prepare to deploy underwater cameras and conduct eelgrass surveys in a clam farm in Hood Canal. The nets pictured help protect the clams from predators, who would otherwise greatly reduce the density of clams growing in the mud.

Higher feeding probabilities of surf perch directly above clam nets in South Puget Sound was observed, which were covered in thick filamentous algae. Likely providing attachment points for algae to adhere and grow, the nets created beneficial habitat for preferred prey items such as amphipods.

Collaborators on this project were Mark Scheuerell (SAFS), Bridget Ferriss (NOAA), Beth Sanderson (NOAA), Peter Kiffney (NOAA), Chelsea Wood (SAFS), and the data was collected during 2017 and 2018.

A shore crab perches atop a pile of eelgrass at low tide. Shore crabs often use eelgrass to hide from predators and forage for food.

Two decades of change in sea star abundance in Puget Sound

Since 1991, students and faculty at UW’s School of Aquatic and Fishery Sciences have conducted bottom trawl surveys in Port Madison through the School’s Fisheries Ecology course, creating an experiential learning opportunity for students and collecting valuable long-term data on physical and ecological change at a subtidal site in Puget Sound. Fortuitously, this long-term sampling gave students the data needed to investigate an unprecedented mass mortality event. 

Intertidal and subtidal ecosystems across North America’s west coast were impacted by the 2013-2015 sea star wasting disease (SSWD) epizootic. Leveraging two decades of data from the Port Madison trawl surveys, their analysis of long-term sea star abundance trends revealed stark declines in species known to be most susceptible to SSWD, coincident with the epizootic’s 2013-14 onset in Washington State. Their results also suggest that sea stars known to be less susceptible to SSWD faced previously unreported declines throughout the study period (1997-2019), predating SSWD’s onset.

These findings not only inform ecologists’ understanding of sea star communities, but also demonstrate the value of long-term datasets in documenting historical ecosystem states in case of catastrophe and the involvement of undergraduate classes in the collection of the data.

Mediaster aequalis

Studying Cook Inlet beluga whales with help from FINS

Our latest student feature highlighting the use of the FINS award is with Arial Brewer, PhD student in the Berdahl and Van Cise labs.

With the FINS award, I was able to use it for two different purposes – one involving presenting my research at a conference, and the other conducting fieldwork in Alaska.

In Spring 2023, I traveled to Olympia, WA and presented my research at The Wildlife Society conference in Olympia. I was also able to use the award to conduct fieldwork in Alaska over a 3 week period. The project I worked on involved attaching acoustic tags to the the beluga whale population in the Cook Inlet. The aim of the research is to better understand foraging behavior in this species and the effects of anthropogenic noise.

Check out the range of FINS merchandise on offer to support SAFS Grads

Want to read about the other experiences of SAFS Grads and their use of the FINS award?


Bringing science to life at the UW Aquatic Sciences Open House

Another year, another fantastic day of bringing science to life at the UW Aquatic Sciences Open House. Featuring 30 booths, each with an interactive activity dedicated to specific research underway in the world of water, this year’s Open House welcomed more than 600 visitors.

Making aquatic science accessible to all is one of the driving forces behind the Open House. The event is hosted by the School of Aquatic and Fishery Sciences, which sits on the south campus of the University of Washington and just across from Portage Bay. The breadth of research which was on display on Sunday 21 May really highlights the unique location of the UW aquatic sciences programs in the Puget Sound, benefitting from the proximity to a wide range of freshwater and marine environments. 

From peering into the depths of the UW Fish Collection, testing knowledge on the Fishes of the Salish Sea Mural, plunging hands into a coastal sand pit, or picking up a crayfish and touching seastars; these were just some of the hands-on activities available. 

Highlighting the amazing opportunities to explore the science and research right in our backyard helps us inspire our Open House visitors, who spanned in age from toddlers and teenagers to adults.

It’s not just local science that was on display. The aquatic science underway at UW spans the globe, from Arctic oceanography and submarine research to tropical coral reefs and seabird observations.

An extra special treat for Open House visitors was a tour of the R/V Rachel Carson, docked just a few minutes away from the SAFS building. The research vessel, owned by UW Oceanography and operated as part of the Academic Research Fleet within the UNOLS framework (University National Oceanographic Laboratories System), is used throughout the year for research expeditions within the Salish Sea and in coastal waters along the western US and British Columbia.

Opening our doors to the diverse communities that make up Seattle, this year had in-person interpreters available in Spanish, Somali, Tagalog, Vietnamese and ASL, funded by our partner foundry10, an education research organization with a philanthropic focus on expanding ideas about learning and creating direct value for youth.

Did you miss the Open House this year? Check out the coverage by Fox 13 Seattle. 

Special thanks to the Open House Coordinator (Jenny Stern), the SEAS Open House Committee (Marie Zahn and Will Kumler), the SEAS Board (Haila Schultz, Miranda Roethler, Marie Zahn, Brielle Kwarta, Samantha-Lynn Martinez, Mark Scheuerell, and Sam Scherer), foundry10 (Lindsay Holladay Van Damme, Curtis Rogers, Sydney Parker, Wes Koseki, Travis Willingham Windleharth), UW News (Hannah Hickey), and all booth hosts and event volunteers.

Experience the SEAS 2023 Open House in the gallery below

 


SAFS, salmon and science at the White House

Tom Quinn at the White House

A testament to the essential science and research happening in the UW SAFS Alaska Salmon Program, Professors Tom Quinn and Daniel Schindler were invited to a White House event on May 11, recognizing the EPA’s decision to halt the Pebble Mine project in Alaska’s Bristol Bay.

UW scientists have been working in Bristol Bay’s streams, rivers and lakes for over 75 years through the Fisheries Research Institute, with the current generation of SAFS faculty active for over three decades through the Alaska Salmon Program. The research of these scientists continues to provide critical and credible insights into environmental issues in the region, particularly ones affecting the world’s largest salmon fishery.

Daniel Schindler and Melanie Brown (outreach director for SalmonState and long-time Bristol Bay fisher) on the White House lawn

Taking place in the White House Rose Garden, President Biden and Alannah Hurley, Executive Director of the United Tribes of Bristol Bay, spoke to the event attendees who had gathered from a unique blend of groups: Native Alaskans, commercial fishers, processors, recreational fishers, river conservationists and scientists.

Quinn and Schindler’s invitation to the event highlights their commitment to discovery science in an era of rapid global change, producing data and knowledge for managing and conserving regional ecosystems and their fisheries.

 

 

Find out more about the Alaska Salmon Program

 


SEAS Open House featured on FOX 13 Seattle news

The UW Aquatic Sciences Open House was featured in a 2-minute segment on FOX 13 Seattle, showcasing the breadth of research and highlighting the importance of Open House events for accessibility and inspiring a new generation of scientists.


SAFS Spring Graduation will be held on 9 June

SAFS welcomes graduates, friends, family and other members of the UW community to the annual UW School of Aquatic and Fishery Sciences Graduation Celebration, held on Friday, June 9, as we celebrate the 2022-23 graduates.


International presentation made possible with FINS award

We spoke with PhD student Helena McMonagle about her use of the FINS award to facilitate travel to a conference in Norway, where she presented her research abroad  for the first time.

  1. Why was this conference useful for you to attend?

The Effects of Climate Change on the World’s Ocean (ECCWO) is a conference that now takes place every few years in a different country. This was the fifth meeting of this conference, which took place in Norway. As the climate changes, so does the science that aims to describe, forecast, and study the impacts of it. So, I learned about loads of new research I hadn’t heard before. For example, we heard talks on how climate change is impacting fishing communities and how communities are adapting. We learned how climate change is affecting marine species distribution shifts (generally, species moving toward the poles to stay in cooler waters). 

Other colleagues presented on climate change impacts that aren’t as widely acknowledged as warming, such as how the oceans are also becoming less well oxygenated and more acidic, and how marine species respond to these changes. There was also a helpful interactive session on fostering international collaboration and communicating effectively with policy makers. 

Getting out of my usual research circle and hearing from people at other institutions, other countries, and in other disciplines often sparks new ideas for my own research and science communication, and can foster new collaborations. At an in-person conference in 2019 and a virtual conference in 2021, I met a few other early career researchers with whom we’ve just finished writing a paper that was recently published on considerations for deep sea exploitation (e.g., fishing and mining). I got to see one of those colleagues at this conference and may not have met her if it weren’t for other conferences in the past, even though our work has a lot of overlap. I’m grateful to be able to make these connections with people in far away places who happen to have super similar research interests, and for the chance to do science with them even though we aren’t at the same institution. Conferences are great for sparking those connections and ideas.

  1. Did this conference offer any new opportunities for you?

This was my first time presenting in-person at an international conference. I believe that preparing for a talk by thinking about how to tell a story about the research, and then hearing people’s questions after the talk, improves the work we do. It’s also so cool to be immersed in a community of people from all over the world, and to have time for informal conversations about how science, science communication, environmental policy, and various aspects of life outside of work are done in other countries. It’s always interesting to compare, contrast, and learn from other ways of doing things.

Nolan Kitts
Helena presenting at the conference

I will say, in case it’s helpful for someone to hear, that it can also be tiring to arrive after a long journey abroad and jump right into meeting loads of new people all day and focusing on new science. Many people are also doing this in their second or third language, not to mention in a place they’ve never been before. My baggage never arrived to Norway, so that was another challenge for the first few days, and a friend kindly lent me some stuff to wear. So for what it’s worth, a bit of advice I received years ago is that it’s also okay to take a break if you need to and catch up on sleep, alone time, exercise, whatever it is you need to make the most of the conference. Secondly, it’s good to cut people some slack considering these potential challenges they’re handling. Another thing is that many people, myself included, always get a little nervous before talks even though I enjoy giving them. And that’s fine! I try to convince myself I’m nervous because I’m excited.

  1. What was your favorite part of the event?

At the ECCWO5 conference, I had the joy of getting to meet researchers in person over coffee, a meal, or a walk in the beautiful city of Bergen to chat about science and about what their experiences are like as scientists in various countries. This was a treat after reading and citing some of these researchers’ work for years before having met them. In other cases I got to meet new people who I hope to stay in touch with, and see collaborators and friends whom I had only contacted via email or video call for years before this. 

Nolan Kitts
Bryggen waterfront in Bergen

For the past few years I mostly attended virtual conferences unless they were in Seattle, in part because of the pandemic and in part to reduce travel emissions. I think this scientific community widely acknowledges that we should do what we can to reduce our emissions, including those associated with travel to climate change conferences! This came up a lot in conversation. Some people did attend the conference virtually because the (stellar) conference organizers offered both options. Virtual or hybrid meetings can be productive when done well, but there’s also something special about leaving our usual routine and to-do lists and getting together in a new place. I’d like to work in a different country at some point in my life, and this gave me a chance to confirm that Norway is one of the places where I’d consider applying to jobs someday So, I appreciated of the chance to travel to Bergen, share research findings, bounce ideas back and forth, and enjoy a little more human connection and laughter than might have happened if the conference were fully virtual.

I am grateful for a National Science Foundation grant that provided early career researchers attending the conference with travel funding (something worth asking about if you’re a student trying to find funding to travel and present). And finally, thank you so much to our graduate student organization for covering my registration fee, and for helping our students find funding to attend conferences locally, regionally and abroad!

Support SAFS Grads and get your FINS merchandise


GEODUC Team Receives College of Environment’s Outstanding Commitment to Diversity Award

Immersive fieldwork, a bridge program for community college students, a unique research opportunity – these are just some of the ways to describe the GEODUC program, whose team has been awarded the College of the Environment’s Outstanding Commitment to Diversity, Equity, Inclusion, Justice and Accessibility Award.

The GEODUC program – which welcomes transfer students each September into the UW marine geosciences – is led by José Guzmán, (Marine Biology and SAFS), Mikelle Nuwer (Oceanography), Kerry Naish (Marine Biology and SAFS), LuAnne Thompson (Oceanography), and Jane Dolliver (Dean’s Office, College of the Environment).

Mikelle Nuwer (UW Oceanography) with GEODUC Scholars.

GEODUC is an innovative program heading into its second year, with core aims that include building confidence with quantitative skills, creating a support network for incoming community college transfer students, and enhancing the diversity in the Marine Sciences through recruitment of Community College students.

Starting off with a 10-day immersive experience based at UW’s marine field station, Friday Harbor Labs, the program continues to run throughout the academic year. The group meets weekly, exploring themes such as how to succeed at UW, how to communicate effectively and how to participate in research. The group also explores career paths within marine geosciences. Benefiting from meetings with faculty, advisers, peer GEODUC students, and guest speakers from external agencies like NOAA, GEODUC students are given a diverse mix of academic and professional perspectives and guidance.

Funded by the NSF and bringing together the expertise of UW’s Oceanography, Marine Biology, and Aquatic and Fishery Sciences departments, the GEODUC program is already demonstrating success in its core aims with all 11 students admitted from last year fully engaged in STEM majors at UW.

Of the 15 total students that have participated, two have added a double major in geoscience, one student switched into a geoscience degree, and five joined the pilot Identity, Belonging and Inquiry in Science (IBIS) project, aimed at creating research teams, supported by evidence-based mentoring practices.

Building on the goals of GEODUC, José, Jane and Mikelle set up the IBIS project to help undergraduates deepen their science identity in marine sciences. With grant funding through the Royalty Research Fund (RRF) and support from the Dean’s Office, the mentoring program pairs graduates and undergraduates on a graduate-mentored research project housed within the lab of a faculty member.

The decision to award the GEODUC team celebrates the cross-disciplinary and cross-unit team of faculty and staff involved in identifying a problem and delivering a creative solution to tackle it, and their steps towards ensuring a more diverse and represented student population who have the skills, knowledge and support to continue their studies at UW and embark on future careers as marine scientists.