Mayumi L Arimitsu, Ph.D. (Former Employee)
Science and Products
Alaska Forage Fish Database
The Alaska Forage Fish Database is a consolidation of survey catch data and predator diets from multiple partners including USGS Alaska Science Center, NOAA National Marine Fisheries Service Alaska Fisheries Science Center, USFWS Alaska Maritime National Wildlife Refuge, Alaska Department of Fish and Game, and others. The spatial coverage of the database encompasses the coastal and offshore...
Seabird Die-offs in Alaska
Beginning in 2015, large numbers of dead seabirds have been appearing on beaches in most marine areas of Alaska. Although seabird die-offs are known to occur sporadically (e.g. 1970, 1989, 1993, 1997/1998, and 2004) in Alaska, these recent die-offs have been distinguished from past events by their increased frequency, duration, geographic extent, and number of different species involved.
Cook Inlet Seabird and Forage Fish Study
A massive die-off of Common Murres was documented in the Gulf of Alaska (GOA) during the fall and winter of 2015-2016 in association with a record-breaking marine heat wave in the GOA.
Condition of Forage Fish in Prince William Sound During the Marine Heatwave
Changes in the body condition of a key forage fish species, Pacific sand lance ( Ammodytes personatus), are examined to understand how energy transfer to predators may have been disrupted during the recent marine heatwave in the North Pacific (late 2013 to mid 2016).
Filter Total Items: 19
Gridded Seabird Density Estimates in Lower Cook Inlet, Alaska Gridded Seabird Density Estimates in Lower Cook Inlet, Alaska
This data set provides monthly (March-October) gridded density estimates for seabirds in lower Cook Inlet, Alaska. Gridded density estimates were produced by applying spatiotemporal modeling of at-sea survey data collected between 1975 and 2021 of seabird at-sea surveys available in the North Pacific Pelagic Seabird Database (NPPSD; Drew and Piatt 2015). We modeled joint dynamic species
Harmful Algal Bloom Toxins in Seabirds, Forage Fish, and Marine Invertebrates Across Alaska Harmful Algal Bloom Toxins in Seabirds, Forage Fish, and Marine Invertebrates Across Alaska
These data include results from screening tissues of marine organisms for the presence of harmful algal bloom (HAB) toxins: saxitoxin and its related congeners (STX) and domoic acid (DA). Samples collected by USGS or submitted to our laboratory by partners or other stakeholders are screened using commercially available enzyme linked immunosorbent assays (ELISA). A subset of samples...
Assessing the Status and Trends of Seabirds and Forage Fish in Lower Cook Inlet, Alaska Assessing the Status and Trends of Seabirds and Forage Fish in Lower Cook Inlet, Alaska
This data release is composed of seven datasets regarding colonial seabirds and forage fish at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. These data were collected to detect changes in the breeding population of Black-legged Kittiwakes and Common Murres on two nesting colonies in lower Cook Inlet and to compare those counts to baseline counts...
Tracking Data for Kittlitz's Murrelet (Brachyramphus brevirostris) Tracking Data for Kittlitz's Murrelet (Brachyramphus brevirostris)
This data release includes 2 child items with tracking data for Kittlitz's Murrelets, a rare seabird species that nests solitarily on the ground in barren, often alpine areas near the North Pacific and Bering Sea. Child Item 1: "Argos Satellite Tracking Data for Kittlitz's Murrelets (Brachyramphus brevirostris) - Processed Data" -- Quality-controlled data collected from Argos satellite
Pelagic Forage Fish Distribution Abundance and Body Condition Pelagic Forage Fish Distribution Abundance and Body Condition
This data package includes 10 child items with data about the distribution, abundance, and morphology of forage fish, zooplankton, and predators, and oceanographic conditions during summer surveys in Prince William Sound, Alaska.
North Pacific Pelagic Seabird Database (NPPSD) North Pacific Pelagic Seabird Database (NPPSD)
The North Pacific Pelagic Seabird Database (NPPSD) is maintained by the USGS Alaska Science Center and includes survey transect data designed and conducted by numerous partners primarily to census seabirds at sea. The data provided here relate to observations of marine birds and mammals observed during at-sea surveys throughout the North Pacific including the Arctic Ocean, Beaufort Sea...
Filter Total Items: 54
Monitoring long-term changes in forage fish distribution, abundance and body condition in Prince William Sound Monitoring long-term changes in forage fish distribution, abundance and body condition in Prince William Sound
Identifying drivers of change in forage fish populations is key to understanding recovery potential for piscivorous species injured by the Exxon Valdez oil spill, and ecosystem response to natural and anthropogenic perturbations. Forage fish are small pelagic schooling fish such as Pacific capelin (Mallotus catervarius), Pacific sand lance (Ammodytes personatus), Pacific herring (Clupea...
Authors
Mayumi L. Arimitsu, John F. Piatt, Scott Hatch, Caitlin Elizabeth Marsteller, Daniel Stephen Donnelly, Shannon Whelan
Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska
Sablefish (Anoplopoma fimbria) is a commercially valuable groundfish species in Alaska, with the population assessed annually by the National Oceanic and Atmospheric Administration Alaska Fisheries Science Center. Sablefish recruit into the commercially fished population at 2 years old and are poorly sampled by most surveys before that age. However, information on the abundance...
Authors
Mayumi L. Arimitsu, Scott A. Hatch
Climate change and pulse migration: Intermittent Chugach Inuit occupation of glacial fiords on the Kenai Coast, Alaska Climate change and pulse migration: Intermittent Chugach Inuit occupation of glacial fiords on the Kenai Coast, Alaska
For millennia, Inuit peoples of the Arctic and Subarctic have been challenged by the impacts of climate change on the abundance of key subsistence species. Responses to climate-induced declines in animal populations included switching to alternative food sources and/or migrating to regions of greater availability. We examine these dynamics for the Chugach Inuit (Sugpiat) people of...
Authors
Aron Crowell, Mayumi L. Arimitsu
Gulf watch Alaska: Long-term research and monitoring in the Gulf of Alaska Gulf watch Alaska: Long-term research and monitoring in the Gulf of Alaska
Within the Gulf of Alaska, in the North Pacific Ocean, three major events - both natural and human-caused – resulted in large-scale ecosystem changes during the last 50 years.
Authors
Robert M. Suryan, Mandy Lindeberg, Mayumi L. Arimitsu, Daniel Esler, Heather Coletti, Russell Hopcroft, W. Scott Pegau
Reduction in overwinter body condition and size of Pacific sand lance has implications for piscivorous predators during marine heatwaves Reduction in overwinter body condition and size of Pacific sand lance has implications for piscivorous predators during marine heatwaves
Acute anomalous ocean warming events, including marine heatwaves (MHWs), have significant effects on reproduction and survival of piscivorous seabirds. Additionally, MHWs have negative effects on seabird fish prey, exacerbating these consequences and resulting in population implications for seabirds. We evaluated the relative body condition of Pacific sand lance Ammodytes personatus, an...
Authors
Clifford LK Robinson, Douglas F Bertram, Hayleigh Shannon, Vanessa R. von Biela, Wesley Greentree, William Duguird, Mayumi L. Arimitsu
Joint spatiotemporal models to predict seabird densities at sea Joint spatiotemporal models to predict seabird densities at sea
Introduction: Seabirds are abundant, conspicuous members of marine ecosystems worldwide. Synthesis of distribution data compiled over time is required to address regional management issues and understand ecosystem change. Major challenges when estimating seabird densities at sea arise from variability in dispersion of the birds, sampling effort over time and space, and differences in...
Authors
Mayumi L. Arimitsu, John F. Piatt, James Thorson, Kathy Kuletz, Gary Drew, Sarah K. Schoen, Dan Cushing, Caitlin Kroeger, William Sydeman
Non-USGS Publications**
Arimitsu, M. L. 2016. The influence of glaciers on coastal marine ecosystems in the Gulf of Alaska. Dissertation, University of Alaska Fairbanks, 154 p.
Arimitsu, M. L. 2009. Environmental gradients and prey availability relative to glacial features in Kittlitz's murrelet foraging habitat. M.Sc. Thesis, University of Alaska Fairbanks.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Alaska Forage Fish Database
The Alaska Forage Fish Database is a consolidation of survey catch data and predator diets from multiple partners including USGS Alaska Science Center, NOAA National Marine Fisheries Service Alaska Fisheries Science Center, USFWS Alaska Maritime National Wildlife Refuge, Alaska Department of Fish and Game, and others. The spatial coverage of the database encompasses the coastal and offshore...
Seabird Die-offs in Alaska
Beginning in 2015, large numbers of dead seabirds have been appearing on beaches in most marine areas of Alaska. Although seabird die-offs are known to occur sporadically (e.g. 1970, 1989, 1993, 1997/1998, and 2004) in Alaska, these recent die-offs have been distinguished from past events by their increased frequency, duration, geographic extent, and number of different species involved.
Cook Inlet Seabird and Forage Fish Study
A massive die-off of Common Murres was documented in the Gulf of Alaska (GOA) during the fall and winter of 2015-2016 in association with a record-breaking marine heat wave in the GOA.
Condition of Forage Fish in Prince William Sound During the Marine Heatwave
Changes in the body condition of a key forage fish species, Pacific sand lance ( Ammodytes personatus), are examined to understand how energy transfer to predators may have been disrupted during the recent marine heatwave in the North Pacific (late 2013 to mid 2016).
Filter Total Items: 19
Gridded Seabird Density Estimates in Lower Cook Inlet, Alaska Gridded Seabird Density Estimates in Lower Cook Inlet, Alaska
This data set provides monthly (March-October) gridded density estimates for seabirds in lower Cook Inlet, Alaska. Gridded density estimates were produced by applying spatiotemporal modeling of at-sea survey data collected between 1975 and 2021 of seabird at-sea surveys available in the North Pacific Pelagic Seabird Database (NPPSD; Drew and Piatt 2015). We modeled joint dynamic species
Harmful Algal Bloom Toxins in Seabirds, Forage Fish, and Marine Invertebrates Across Alaska Harmful Algal Bloom Toxins in Seabirds, Forage Fish, and Marine Invertebrates Across Alaska
These data include results from screening tissues of marine organisms for the presence of harmful algal bloom (HAB) toxins: saxitoxin and its related congeners (STX) and domoic acid (DA). Samples collected by USGS or submitted to our laboratory by partners or other stakeholders are screened using commercially available enzyme linked immunosorbent assays (ELISA). A subset of samples...
Assessing the Status and Trends of Seabirds and Forage Fish in Lower Cook Inlet, Alaska Assessing the Status and Trends of Seabirds and Forage Fish in Lower Cook Inlet, Alaska
This data release is composed of seven datasets regarding colonial seabirds and forage fish at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. These data were collected to detect changes in the breeding population of Black-legged Kittiwakes and Common Murres on two nesting colonies in lower Cook Inlet and to compare those counts to baseline counts...
Tracking Data for Kittlitz's Murrelet (Brachyramphus brevirostris) Tracking Data for Kittlitz's Murrelet (Brachyramphus brevirostris)
This data release includes 2 child items with tracking data for Kittlitz's Murrelets, a rare seabird species that nests solitarily on the ground in barren, often alpine areas near the North Pacific and Bering Sea. Child Item 1: "Argos Satellite Tracking Data for Kittlitz's Murrelets (Brachyramphus brevirostris) - Processed Data" -- Quality-controlled data collected from Argos satellite
Pelagic Forage Fish Distribution Abundance and Body Condition Pelagic Forage Fish Distribution Abundance and Body Condition
This data package includes 10 child items with data about the distribution, abundance, and morphology of forage fish, zooplankton, and predators, and oceanographic conditions during summer surveys in Prince William Sound, Alaska.
North Pacific Pelagic Seabird Database (NPPSD) North Pacific Pelagic Seabird Database (NPPSD)
The North Pacific Pelagic Seabird Database (NPPSD) is maintained by the USGS Alaska Science Center and includes survey transect data designed and conducted by numerous partners primarily to census seabirds at sea. The data provided here relate to observations of marine birds and mammals observed during at-sea surveys throughout the North Pacific including the Arctic Ocean, Beaufort Sea...
Filter Total Items: 54
Monitoring long-term changes in forage fish distribution, abundance and body condition in Prince William Sound Monitoring long-term changes in forage fish distribution, abundance and body condition in Prince William Sound
Identifying drivers of change in forage fish populations is key to understanding recovery potential for piscivorous species injured by the Exxon Valdez oil spill, and ecosystem response to natural and anthropogenic perturbations. Forage fish are small pelagic schooling fish such as Pacific capelin (Mallotus catervarius), Pacific sand lance (Ammodytes personatus), Pacific herring (Clupea...
Authors
Mayumi L. Arimitsu, John F. Piatt, Scott Hatch, Caitlin Elizabeth Marsteller, Daniel Stephen Donnelly, Shannon Whelan
Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska
Sablefish (Anoplopoma fimbria) is a commercially valuable groundfish species in Alaska, with the population assessed annually by the National Oceanic and Atmospheric Administration Alaska Fisheries Science Center. Sablefish recruit into the commercially fished population at 2 years old and are poorly sampled by most surveys before that age. However, information on the abundance...
Authors
Mayumi L. Arimitsu, Scott A. Hatch
Climate change and pulse migration: Intermittent Chugach Inuit occupation of glacial fiords on the Kenai Coast, Alaska Climate change and pulse migration: Intermittent Chugach Inuit occupation of glacial fiords on the Kenai Coast, Alaska
For millennia, Inuit peoples of the Arctic and Subarctic have been challenged by the impacts of climate change on the abundance of key subsistence species. Responses to climate-induced declines in animal populations included switching to alternative food sources and/or migrating to regions of greater availability. We examine these dynamics for the Chugach Inuit (Sugpiat) people of...
Authors
Aron Crowell, Mayumi L. Arimitsu
Gulf watch Alaska: Long-term research and monitoring in the Gulf of Alaska Gulf watch Alaska: Long-term research and monitoring in the Gulf of Alaska
Within the Gulf of Alaska, in the North Pacific Ocean, three major events - both natural and human-caused – resulted in large-scale ecosystem changes during the last 50 years.
Authors
Robert M. Suryan, Mandy Lindeberg, Mayumi L. Arimitsu, Daniel Esler, Heather Coletti, Russell Hopcroft, W. Scott Pegau
Reduction in overwinter body condition and size of Pacific sand lance has implications for piscivorous predators during marine heatwaves Reduction in overwinter body condition and size of Pacific sand lance has implications for piscivorous predators during marine heatwaves
Acute anomalous ocean warming events, including marine heatwaves (MHWs), have significant effects on reproduction and survival of piscivorous seabirds. Additionally, MHWs have negative effects on seabird fish prey, exacerbating these consequences and resulting in population implications for seabirds. We evaluated the relative body condition of Pacific sand lance Ammodytes personatus, an...
Authors
Clifford LK Robinson, Douglas F Bertram, Hayleigh Shannon, Vanessa R. von Biela, Wesley Greentree, William Duguird, Mayumi L. Arimitsu
Joint spatiotemporal models to predict seabird densities at sea Joint spatiotemporal models to predict seabird densities at sea
Introduction: Seabirds are abundant, conspicuous members of marine ecosystems worldwide. Synthesis of distribution data compiled over time is required to address regional management issues and understand ecosystem change. Major challenges when estimating seabird densities at sea arise from variability in dispersion of the birds, sampling effort over time and space, and differences in...
Authors
Mayumi L. Arimitsu, John F. Piatt, James Thorson, Kathy Kuletz, Gary Drew, Sarah K. Schoen, Dan Cushing, Caitlin Kroeger, William Sydeman
Non-USGS Publications**
Arimitsu, M. L. 2016. The influence of glaciers on coastal marine ecosystems in the Gulf of Alaska. Dissertation, University of Alaska Fairbanks, 154 p.
Arimitsu, M. L. 2009. Environmental gradients and prey availability relative to glacial features in Kittlitz's murrelet foraging habitat. M.Sc. Thesis, University of Alaska Fairbanks.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*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