John Piatt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 18
SUPERSEDED: Data Associated with Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015–2017 SUPERSEDED: Data Associated with Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015–2017
This data release has been SUPERSEDED. No data are provided here. Data from HABs sampling data releases have been appended to U.S. Geological Survey data release: https://doi.org/10.5066/P9MLNP9H. This data set is comprised of two tables with results of algal toxin screening for saxitoxin and domoic acid. We used enzyme-linked immunosorbent assay (ELISA) and high-performance liquid...
Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016 Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016
These data are in two tables relating to a die-off of Common Murres in the north Pacific, 2015-2016. The tables provide: 1) beach survey locations, date, time, distance surveyed (kilometers), and number of Common Murre carcasses observed during surveys conducted along the coastline of Alaska to document the 2015-2016 die-off of Common Murres coincident with the North Pacific marine...
Pacific Sand Lance Energy Density, Length, and Age, Prince William Sound, Alaska, 2012-2016 Pacific Sand Lance Energy Density, Length, and Age, Prince William Sound, Alaska, 2012-2016
This data set documents the age, length, dry mass energy density, and dry mass of age-0 and age-1 Pacific sand lance (Ammodytes personatus) captured in Prince William Sound Alaska each July from 2012 to 2016.
Glacier Runoff in Gulf of Alaska Fjords, 2004-2011 Glacier Runoff in Gulf of Alaska Fjords, 2004-2011
Marine ecosystems respond to a range of habitat variability in coastal zones modified by glacial freshwater outflows, biophysical data were collected in three study regions that included four major glacial fjord systems around the Gulf of Alaska. A suite of geographic, oceanographic, nutrient and biological attributes were sampled at these three study regions during peak ice-melt season...
Marine ecology near Tufted Puffin colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014 Marine ecology near Tufted Puffin colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014
In the North Pacific Ocean and Bering Sea between August 2012-2014, data were collected on sea surface temperature and salinity data, marine bird and mammal surveys, hydroacoustic backscatter data, marine environment surrounding Tufted Puffin colonies, and body condition and diets of Tufted Puffin chicks.
Biogeochemical Subsidies from Glacier Runoff into Alaska Coastal Marine Food Webs, Gulf of Alaska, 2012-2013 Biogeochemical Subsidies from Glacier Runoff into Alaska Coastal Marine Food Webs, Gulf of Alaska, 2012-2013
To demonstrate connectivity between terrestrial and marine ecosystems, we used stable (δ13C, δ15N, δ2H) and radiogenic (∆14C) isotopes to estimate the relative contribution of glacier runoff and terrestrial-derived organic matter (OM) to marine food webs. This dataset contains information on isotopic signatures from dissolved organic matter (DOM), dissolved inorganic matter (DIC) and...
Filter Total Items: 200
Monitoring the recovery of seabirds and forage fish following a major ecosystem disruption in Lower Cook Inlet Monitoring the recovery of seabirds and forage fish following a major ecosystem disruption in Lower Cook Inlet
Following the North Pacific marine heatwave of 2014-2016 and associated extreme die-off of seabirds in the winter of 2015-2016, we repeated historical marine bird and forage fish surveys around two seabird colonies (Gull Island, Chisik Island) in lower Cook Inlet during 2016-2019 in order to document immediate and lingering impacts of the heatwave on resident fish and seabird populations...
Authors
Mayumi Arimitsu, Sarah Schoen, John F. Piatt, Caitlin Marsteller, Gary Drew
Ecosystem response persists after a prolonged marine heatwave Ecosystem response persists after a prolonged marine heatwave
Some of the longest and most comprehensive marine ecosystem monitoring programs were established in the Gulf of Alaska following the environmental disaster of the Exxon Valdez oil spill over 30 years ago. These monitoring programs have been successful in assessing recovery from oil spill impacts, and their continuation decades later has now provided an unparalleled assessment of...
Authors
Robert Suryan, Mayumi Arimitsu, Heather Coletti, Russell Hopcroft, Mandy Lindeberg, Steven Barbeaux, Sonia Batten, William Burt, Mary Bishop, James Bodkin, R. Brenner, Robert Campbell, Daniel Cushing, Seth Danielson, Martin Dorn, Brie Drummond, Daniel Esler, Thomas Gelatt, Dana Hanselman, Katrin Iken, David Irons, Scott Hatch, Stormy Haught, Kris Holderied, David Kimmel, Brenda Konar, Kathy Kuletz, Arthur Kettle, Benjamin Laurel, John Maniscalco, Daniel Monson, Craig Matkin, Caitlin McKinstry, John Moran, D. Olsen, John F. Piatt, Wayne Palsson, W. Scott Pegau, Lauren Rogers, Nora Rojek, Anne Schaefer, Ingrid Spies, J.M. Straley, Suzanne Strom, Marysia Szymkowiak, Kathryn Sweeney, Ben P. Weitzman, Ellen Yasumiishi, Stephanie Zador
Reduced quality and synchronous collapse of forage species disrupts trophic transfer during a prolonged marine heatwave Reduced quality and synchronous collapse of forage species disrupts trophic transfer during a prolonged marine heatwave
The Gulf of Alaska forage fish community includes a few key species that differ markedly in their timing of spawning, somatic growth and lipid storage, and in their migration behavior. This diversity in life history strategies facilitates resilience in marine food webs because it buffers predators against the naturally high variance in abundance of pelagic forage fish populations by...
Authors
Mayumi Arimitsu, John F. Piatt, Scott Hatch, Rob Suryan, Sonia Batten, Mary Anne Bishop, Rob Campbell, Heather Coletti, Dan Cushing, Kristen Gorman, Stormy Haught, Russell Hopcroft, Kathy Kuletz, Caitlin Marsteller, Caitlin McKinstry, David McGowan, John Moran, R. Pegau, Anne Schaefer, Sarah Schoen, Jan Straley, Vanessa von Biela
Heatwave-induced synchrony within forage fish portfolio disrupts energy flow to top pelagic predators Heatwave-induced synchrony within forage fish portfolio disrupts energy flow to top pelagic predators
During the Pacific marine heatwave of 2014–2016, abundance and quality of several key forage fish species in the Gulf of Alaska were simultaneously reduced throughout the system. Capelin (Mallotus catervarius), sand lance (Ammodytes personatus), and herring (Clupea pallasii) populations were at historically low levels, and within this community abrupt declines in portfolio effects...
Authors
Mayumi Arimitsu, John Piatt, Scott Hatch, Robert M. Suryan, Sonia Batten, Mary Bishop, Rob Campbell, Heather Coletti, Dan Cushing, Kristen Gorman, Russell Hopcroft, Kathy Kuletz, Caitlin Marsteller, Caitlin McKinstry, David McGowan, John Moran, W. Scott Pegau, Anne Schaefer, Sarah Schoen, Jan Straley, Vanessa von Biela
Seabird synthesis Seabird synthesis
Overall, the status of seabirds was fair to good in the WGOA in 2020, with limited data available from Middleton Island, Cook Inlet, and the Kodiak Archipelago (Figure 63). Colony attendance remains low in some populations compared to historic levels, and some colonies were newly abandoned. However, when birds did arrive to breed, reproductive success generally appeared fair to good for...
Authors
Mayumi Arimitsu, Hillary Burgess, Robin Corcoran, Scott Hatch, Tim Jones, Jackie Lindsey, Caitlin Marsteller, John F. Piatt, Sarah Schoen
Seabird‐induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems Seabird‐induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems
Forage fish populations often undergo large and rapid fluctuations in abundance. However, most of their predators are buffered against such fluctuations owing to their slower pace of life, which allows them to maintain more stable populations, at least during short periods of food scarcity. In this study, we investigated top‐down processes exerted by seabirds on forage fish stocks in...
Authors
Claire Saraux, William Sydeman, John F. Piatt, Tycho Anker-Nilssen, Jonas Hentati-Sundberg, Sophie Bertrand, Philippe Cury, Robert Furness, James Miller, Henrik Österblom, Giannina Passuni, Jean-Paul Roux, Lynne Shannon, Robert Crawford
Can oceanic prey effects on growth and time to fledging mediate terrestrial predator limitation of an at‐risk seabird? Can oceanic prey effects on growth and time to fledging mediate terrestrial predator limitation of an at‐risk seabird?
Most seabird species nest colonially on cliffs or islands with limited terrestrial predation, so that oceanic effects on the quality or quantity of prey fed to chicks more often determine nest success. However, when predator access increases, impacts can be dramatic, especially when exposure to predators is extended due to slow growth from inadequate food. Kittlitz’s Murrelet...
Authors
Timothy Knudson, James Lovvorn, M. Lawonn, Robin Corcoran, Dan Roby, John Piatt, William Pyle
Extreme mortality and reproductive failure of common murres resulting from the northeast Pacific marine heatwave of 2014-2016 Extreme mortality and reproductive failure of common murres resulting from the northeast Pacific marine heatwave of 2014-2016
About 62,000 dead or dying common murres (Uria aalge), the trophically dominant fish-eating seabird of the North Pacific, washed ashore between summer 2015 and spring 2016 on beaches from California to Alaska. Most birds were severely emaciated and, so far, no evidence for anything other than starvation was found to explain this mass mortality. Three-quarters of murres were found in the...
Authors
John Piatt, Julia Parrish, Heather Renner, Sarah Schoen, Timothy Jones, Mayumi Arimitsu, Kathy Kuletz, Barbara Bodenstein, Marisol Garcia-Reyes, Rebecca Duerr, Robin Corcoran, Robb S.A. Kaler, Gerard McChesney, Richard Golightly, Heather Coletti, Robert M. Suryan, Hillary Burgess, Jackie Lindsey, Kirsten Lindquist, Peter Warzybok, Jaime Jahncke, Jan Roletto, William J. Sydeman
Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: Implications for ecosystem-based fisheries management Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: Implications for ecosystem-based fisheries management
Pacific capelin Mallotus catervarius are planktivorous, small pelagic fish that serve an intermediate trophic role in marine food webs. Due to the lack of a directed fishery or monitoring of capelin in the Northeast Pacific, there is limited information on their distribution and abundance, and how spatio-temporal fluctuations in capelin density affects their availability as prey. To...
Authors
David W. McGowan, Esther Goldstein, Mayumi Arimitsu, Alison Dreary, Olav Ormseth, Alex DeRobertis, John Horne, Lauren Rogers, Matt Wilson, Kenneth Coyle, Kris Holderied, John Piatt, W.T. Stockhausen, Stephani Zador
Algal toxins in Alaskan seabirds: Evaluating the role of saxitoxin and domoic acid in a large-scale die-off of Common Murres Algal toxins in Alaskan seabirds: Evaluating the role of saxitoxin and domoic acid in a large-scale die-off of Common Murres
Elevated seawater temperatures are linked to the development of harmful algal blooms (HABs), which pose a growing threat to marine birds and other wildlife. During late 2015 and early 2016, a massive die-off of Common Murres (Uria algae; hereafter, murres) was observed in the Gulf of Alaska coincident with a strong marine heat wave. Previous studies have documented illness and death...
Authors
Caroline Van Hemert, Sarah Schoen, R. Litaker, Matthew Smith, Mayumi Arimitsu, John Piatt, William C. Holland, Ransom Hardison, John Pearce
Effects of ocean climate on the length and condition of forage fish in the Gulf of Alaska Effects of ocean climate on the length and condition of forage fish in the Gulf of Alaska
Climatic drivers of the size and body condition of forage fish in the North Pacific are poorly known. We hypothesized that length and condition of forage fish in the Gulf of Alaska (GoA) should vary in relation to ocean temperature on multiple scales. To test this hypothesis, we analyzed morphometric data for capelin (Mallotus catervarius) and Pacific sand lance (PSL; Ammodytes...
Authors
Sarah Thompson, Marisol Garcia-Reyes, William Sydeman, Mayumi Arimitsu, Scott Hatch, John Piatt
Monitoring long-term changes in forage fish distribution, abundance and body condition Monitoring long-term changes in forage fish distribution, abundance and body condition
We collected data on forage fish abundance, distribution and body condition in Prince William Sound, Alaska during summers in 2012 through 2016. This included acoustic – trawl surveys, aerial-acoustic surveys, opportunistic sampling where we encountered forage aggregations, and concurrent measurements of forage fish habitat. Acoustic indices of density suggest low abundance of age-0...
Authors
Mayumi Arimitsu, John Piatt
Science and Products
Filter Total Items: 18
SUPERSEDED: Data Associated with Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015–2017 SUPERSEDED: Data Associated with Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015–2017
This data release has been SUPERSEDED. No data are provided here. Data from HABs sampling data releases have been appended to U.S. Geological Survey data release: https://doi.org/10.5066/P9MLNP9H. This data set is comprised of two tables with results of algal toxin screening for saxitoxin and domoic acid. We used enzyme-linked immunosorbent assay (ELISA) and high-performance liquid...
Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016 Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016
These data are in two tables relating to a die-off of Common Murres in the north Pacific, 2015-2016. The tables provide: 1) beach survey locations, date, time, distance surveyed (kilometers), and number of Common Murre carcasses observed during surveys conducted along the coastline of Alaska to document the 2015-2016 die-off of Common Murres coincident with the North Pacific marine...
Pacific Sand Lance Energy Density, Length, and Age, Prince William Sound, Alaska, 2012-2016 Pacific Sand Lance Energy Density, Length, and Age, Prince William Sound, Alaska, 2012-2016
This data set documents the age, length, dry mass energy density, and dry mass of age-0 and age-1 Pacific sand lance (Ammodytes personatus) captured in Prince William Sound Alaska each July from 2012 to 2016.
Glacier Runoff in Gulf of Alaska Fjords, 2004-2011 Glacier Runoff in Gulf of Alaska Fjords, 2004-2011
Marine ecosystems respond to a range of habitat variability in coastal zones modified by glacial freshwater outflows, biophysical data were collected in three study regions that included four major glacial fjord systems around the Gulf of Alaska. A suite of geographic, oceanographic, nutrient and biological attributes were sampled at these three study regions during peak ice-melt season...
Marine ecology near Tufted Puffin colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014 Marine ecology near Tufted Puffin colonies across the Aleutian Archipelago and Alaska Peninsula, 2012-2014
In the North Pacific Ocean and Bering Sea between August 2012-2014, data were collected on sea surface temperature and salinity data, marine bird and mammal surveys, hydroacoustic backscatter data, marine environment surrounding Tufted Puffin colonies, and body condition and diets of Tufted Puffin chicks.
Biogeochemical Subsidies from Glacier Runoff into Alaska Coastal Marine Food Webs, Gulf of Alaska, 2012-2013 Biogeochemical Subsidies from Glacier Runoff into Alaska Coastal Marine Food Webs, Gulf of Alaska, 2012-2013
To demonstrate connectivity between terrestrial and marine ecosystems, we used stable (δ13C, δ15N, δ2H) and radiogenic (∆14C) isotopes to estimate the relative contribution of glacier runoff and terrestrial-derived organic matter (OM) to marine food webs. This dataset contains information on isotopic signatures from dissolved organic matter (DOM), dissolved inorganic matter (DIC) and...
Filter Total Items: 200
Monitoring the recovery of seabirds and forage fish following a major ecosystem disruption in Lower Cook Inlet Monitoring the recovery of seabirds and forage fish following a major ecosystem disruption in Lower Cook Inlet
Following the North Pacific marine heatwave of 2014-2016 and associated extreme die-off of seabirds in the winter of 2015-2016, we repeated historical marine bird and forage fish surveys around two seabird colonies (Gull Island, Chisik Island) in lower Cook Inlet during 2016-2019 in order to document immediate and lingering impacts of the heatwave on resident fish and seabird populations...
Authors
Mayumi Arimitsu, Sarah Schoen, John F. Piatt, Caitlin Marsteller, Gary Drew
Ecosystem response persists after a prolonged marine heatwave Ecosystem response persists after a prolonged marine heatwave
Some of the longest and most comprehensive marine ecosystem monitoring programs were established in the Gulf of Alaska following the environmental disaster of the Exxon Valdez oil spill over 30 years ago. These monitoring programs have been successful in assessing recovery from oil spill impacts, and their continuation decades later has now provided an unparalleled assessment of...
Authors
Robert Suryan, Mayumi Arimitsu, Heather Coletti, Russell Hopcroft, Mandy Lindeberg, Steven Barbeaux, Sonia Batten, William Burt, Mary Bishop, James Bodkin, R. Brenner, Robert Campbell, Daniel Cushing, Seth Danielson, Martin Dorn, Brie Drummond, Daniel Esler, Thomas Gelatt, Dana Hanselman, Katrin Iken, David Irons, Scott Hatch, Stormy Haught, Kris Holderied, David Kimmel, Brenda Konar, Kathy Kuletz, Arthur Kettle, Benjamin Laurel, John Maniscalco, Daniel Monson, Craig Matkin, Caitlin McKinstry, John Moran, D. Olsen, John F. Piatt, Wayne Palsson, W. Scott Pegau, Lauren Rogers, Nora Rojek, Anne Schaefer, Ingrid Spies, J.M. Straley, Suzanne Strom, Marysia Szymkowiak, Kathryn Sweeney, Ben P. Weitzman, Ellen Yasumiishi, Stephanie Zador
Reduced quality and synchronous collapse of forage species disrupts trophic transfer during a prolonged marine heatwave Reduced quality and synchronous collapse of forage species disrupts trophic transfer during a prolonged marine heatwave
The Gulf of Alaska forage fish community includes a few key species that differ markedly in their timing of spawning, somatic growth and lipid storage, and in their migration behavior. This diversity in life history strategies facilitates resilience in marine food webs because it buffers predators against the naturally high variance in abundance of pelagic forage fish populations by...
Authors
Mayumi Arimitsu, John F. Piatt, Scott Hatch, Rob Suryan, Sonia Batten, Mary Anne Bishop, Rob Campbell, Heather Coletti, Dan Cushing, Kristen Gorman, Stormy Haught, Russell Hopcroft, Kathy Kuletz, Caitlin Marsteller, Caitlin McKinstry, David McGowan, John Moran, R. Pegau, Anne Schaefer, Sarah Schoen, Jan Straley, Vanessa von Biela
Heatwave-induced synchrony within forage fish portfolio disrupts energy flow to top pelagic predators Heatwave-induced synchrony within forage fish portfolio disrupts energy flow to top pelagic predators
During the Pacific marine heatwave of 2014–2016, abundance and quality of several key forage fish species in the Gulf of Alaska were simultaneously reduced throughout the system. Capelin (Mallotus catervarius), sand lance (Ammodytes personatus), and herring (Clupea pallasii) populations were at historically low levels, and within this community abrupt declines in portfolio effects...
Authors
Mayumi Arimitsu, John Piatt, Scott Hatch, Robert M. Suryan, Sonia Batten, Mary Bishop, Rob Campbell, Heather Coletti, Dan Cushing, Kristen Gorman, Russell Hopcroft, Kathy Kuletz, Caitlin Marsteller, Caitlin McKinstry, David McGowan, John Moran, W. Scott Pegau, Anne Schaefer, Sarah Schoen, Jan Straley, Vanessa von Biela
Seabird synthesis Seabird synthesis
Overall, the status of seabirds was fair to good in the WGOA in 2020, with limited data available from Middleton Island, Cook Inlet, and the Kodiak Archipelago (Figure 63). Colony attendance remains low in some populations compared to historic levels, and some colonies were newly abandoned. However, when birds did arrive to breed, reproductive success generally appeared fair to good for...
Authors
Mayumi Arimitsu, Hillary Burgess, Robin Corcoran, Scott Hatch, Tim Jones, Jackie Lindsey, Caitlin Marsteller, John F. Piatt, Sarah Schoen
Seabird‐induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems Seabird‐induced natural mortality of forage fish varies with fish abundance: Evidence from five ecosystems
Forage fish populations often undergo large and rapid fluctuations in abundance. However, most of their predators are buffered against such fluctuations owing to their slower pace of life, which allows them to maintain more stable populations, at least during short periods of food scarcity. In this study, we investigated top‐down processes exerted by seabirds on forage fish stocks in...
Authors
Claire Saraux, William Sydeman, John F. Piatt, Tycho Anker-Nilssen, Jonas Hentati-Sundberg, Sophie Bertrand, Philippe Cury, Robert Furness, James Miller, Henrik Österblom, Giannina Passuni, Jean-Paul Roux, Lynne Shannon, Robert Crawford
Can oceanic prey effects on growth and time to fledging mediate terrestrial predator limitation of an at‐risk seabird? Can oceanic prey effects on growth and time to fledging mediate terrestrial predator limitation of an at‐risk seabird?
Most seabird species nest colonially on cliffs or islands with limited terrestrial predation, so that oceanic effects on the quality or quantity of prey fed to chicks more often determine nest success. However, when predator access increases, impacts can be dramatic, especially when exposure to predators is extended due to slow growth from inadequate food. Kittlitz’s Murrelet...
Authors
Timothy Knudson, James Lovvorn, M. Lawonn, Robin Corcoran, Dan Roby, John Piatt, William Pyle
Extreme mortality and reproductive failure of common murres resulting from the northeast Pacific marine heatwave of 2014-2016 Extreme mortality and reproductive failure of common murres resulting from the northeast Pacific marine heatwave of 2014-2016
About 62,000 dead or dying common murres (Uria aalge), the trophically dominant fish-eating seabird of the North Pacific, washed ashore between summer 2015 and spring 2016 on beaches from California to Alaska. Most birds were severely emaciated and, so far, no evidence for anything other than starvation was found to explain this mass mortality. Three-quarters of murres were found in the...
Authors
John Piatt, Julia Parrish, Heather Renner, Sarah Schoen, Timothy Jones, Mayumi Arimitsu, Kathy Kuletz, Barbara Bodenstein, Marisol Garcia-Reyes, Rebecca Duerr, Robin Corcoran, Robb S.A. Kaler, Gerard McChesney, Richard Golightly, Heather Coletti, Robert M. Suryan, Hillary Burgess, Jackie Lindsey, Kirsten Lindquist, Peter Warzybok, Jaime Jahncke, Jan Roletto, William J. Sydeman
Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: Implications for ecosystem-based fisheries management Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: Implications for ecosystem-based fisheries management
Pacific capelin Mallotus catervarius are planktivorous, small pelagic fish that serve an intermediate trophic role in marine food webs. Due to the lack of a directed fishery or monitoring of capelin in the Northeast Pacific, there is limited information on their distribution and abundance, and how spatio-temporal fluctuations in capelin density affects their availability as prey. To...
Authors
David W. McGowan, Esther Goldstein, Mayumi Arimitsu, Alison Dreary, Olav Ormseth, Alex DeRobertis, John Horne, Lauren Rogers, Matt Wilson, Kenneth Coyle, Kris Holderied, John Piatt, W.T. Stockhausen, Stephani Zador
Algal toxins in Alaskan seabirds: Evaluating the role of saxitoxin and domoic acid in a large-scale die-off of Common Murres Algal toxins in Alaskan seabirds: Evaluating the role of saxitoxin and domoic acid in a large-scale die-off of Common Murres
Elevated seawater temperatures are linked to the development of harmful algal blooms (HABs), which pose a growing threat to marine birds and other wildlife. During late 2015 and early 2016, a massive die-off of Common Murres (Uria algae; hereafter, murres) was observed in the Gulf of Alaska coincident with a strong marine heat wave. Previous studies have documented illness and death...
Authors
Caroline Van Hemert, Sarah Schoen, R. Litaker, Matthew Smith, Mayumi Arimitsu, John Piatt, William C. Holland, Ransom Hardison, John Pearce
Effects of ocean climate on the length and condition of forage fish in the Gulf of Alaska Effects of ocean climate on the length and condition of forage fish in the Gulf of Alaska
Climatic drivers of the size and body condition of forage fish in the North Pacific are poorly known. We hypothesized that length and condition of forage fish in the Gulf of Alaska (GoA) should vary in relation to ocean temperature on multiple scales. To test this hypothesis, we analyzed morphometric data for capelin (Mallotus catervarius) and Pacific sand lance (PSL; Ammodytes...
Authors
Sarah Thompson, Marisol Garcia-Reyes, William Sydeman, Mayumi Arimitsu, Scott Hatch, John Piatt
Monitoring long-term changes in forage fish distribution, abundance and body condition Monitoring long-term changes in forage fish distribution, abundance and body condition
We collected data on forage fish abundance, distribution and body condition in Prince William Sound, Alaska during summers in 2012 through 2016. This included acoustic – trawl surveys, aerial-acoustic surveys, opportunistic sampling where we encountered forage aggregations, and concurrent measurements of forage fish habitat. Acoustic indices of density suggest low abundance of age-0...
Authors
Mayumi Arimitsu, John Piatt
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government