Marine mammals
Marine Mammals Research
Marine Mammals Research
Filter Total Items: 34
No results found.
Recent data (2020-2022) related to USGS marine mammal research is listed below. A complete listing of USGS marine mammal data is available from the button below.
Filter Total Items: 56
Locations Collected 1985-2015 from Female Polar Bears (Ursus maritimus) with Dependent Young Instrumented in the Southern Beaufort Sea with Satellite-linked Transmitters by the USGS Locations Collected 1985-2015 from Female Polar Bears (Ursus maritimus) with Dependent Young Instrumented in the Southern Beaufort Sea with Satellite-linked Transmitters by the USGS
This dataset contains a select subset of Argos and GPS locations collected by satellite data collection systems from collared adult female polar bears that were instrumented in the southern Beaufort Sea between 1985-2015.
Bioelectrical Impedance, Deuterium Dilution, Body Mass, and Morphological Measures of Southern Beaufort Sea Female Polar Bears, Spring 2014-2016 Bioelectrical Impedance, Deuterium Dilution, Body Mass, and Morphological Measures of Southern Beaufort Sea Female Polar Bears, Spring 2014-2016
This dataset contains data from the use of bioelectrical impedance analysis and deuterium injection as methods to estimate the body composition of female polar bears in the southern Beaufort Sea subpopulation. Data are provided on bioelectrical impedance resistance measures, the enrichment level of deuterium oxide that was injected and measured in blood samples, and morphological...
Metabolic Rate, Body Composition, Foraging Success, Behavior, and GPS Locations of Female Polar Bears (Ursus maritimus), Beaufort Sea, Spring, 2014-2016 and Resting Energetics of an Adult Female Polar Bear Metabolic Rate, Body Composition, Foraging Success, Behavior, and GPS Locations of Female Polar Bears (Ursus maritimus), Beaufort Sea, Spring, 2014-2016 and Resting Energetics of an Adult Female Polar Bear
This data package includes 5 child items with data from 9 female polar bears without dependent young in the southern Beaufort Sea in April 2014-2016. Child Item 1: "Doubly-labeled Water, Deuterium Dilution, Body Mass, and Blood Biochemistry Data from Female Polar Bears (Ursus maritimus) in the Southern Beaufort Sea by the USGS in April 2014-2016" Child Item 2: "Resting Metabolic Rates of...
Energetic Costs of Locomotion in Bears Energetic Costs of Locomotion in Bears
This dataset contains measures of tri-axial acceleration, oxygen consumption, and kinematic measures from two captive polar bears and seven captive grizzly bears resting and walking in a metabolic chamber.
Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017 Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017
This dataset contains measures of oxygen consumption and stroke frequency from 1 captive subadult female polar bear (166.5 kg) resting in the water (n = 7 sessions) and swimming and diving in a metabolic swim flume with water circulated at approximately 0.6 km/hr during swimming and diving measurements (n = 6 sessions) in September 2017.
Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012 Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012
The data package "Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012"; provides raw data for examining abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in Glacier Bay National Park and Preserve in southeast Alaska, based on data collected during a series of population-wide aerial surveys. The USGS aerial sea otter surveys have...
Accelerometer Data from Collared Female Polar Bears in the Beaufort Sea, 2009-2016 Accelerometer Data from Collared Female Polar Bears in the Beaufort Sea, 2009-2016
This dataset includes accelerometer data collected on collars deployed on female polar bears in the southern Beaufort Sea from 2009-2016. The accelerometer was built in to collars by Telonics, Inc. and provides a single activity value of the number of seconds active per time interval of data collection. Data were collected every 15-30 minutes. GPS and ARGOs locations collected via...
At-Sea Distribution and Abundance of Seabirds and Marine Mammals off Southern California GIS Resource Database: Aerial seabird and marine mammal surveys off southern California, 1999-2002 At-Sea Distribution and Abundance of Seabirds and Marine Mammals off Southern California GIS Resource Database: Aerial seabird and marine mammal surveys off southern California, 1999-2002
Background - Interest in developing alternative sources of renewable energy to reduce dependence on oil has increased in recent years. Some sources of renewable energy being considered will include power generation infrastructure and support activities located within continental shelf waters, and potentially within deeper waters off the U.S. Pacific coast and beyond state waters (i.e...
Recent publications (2020-2022) related to USGS marine mammal research are listed below. A complete listing of USGS marine mammal publications is available from the button below.
Filter Total Items: 59
Movement-assisted localization from acoustic telemetry data Movement-assisted localization from acoustic telemetry data
Acoustic telemetry technologies are being increasingly deployed to study a variety of aquatic taxa including fishes, reptiles, and marine mammals. Large cooperative telemetry networks produce vast quantities of data useful in the study of movement, resource selection and species distribution. Efficient use of acoustic telemetry data requires estimation of acoustic source locations from...
Authors
Nathan J. Hostetter, Andy Royle
The role of sand lances (Ammodytes sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management The role of sand lances (Ammodytes sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management
The American sand lance (Ammodytes americanus, Ammodytidae) and the Northern sand lance (A. dubius, Ammodytidae) are small forage fishes that play an important functional role in the Northwest Atlantic Ocean (NWA). The NWA is a highly dynamic ecosystem currently facing increased risks from climate change, fishing and energy development. We need a better understanding of the biology...
Authors
Michelle D. Staudinger, Holly Goyert, Justin Suca, Kaycee Coleman, Linda Welch, Joel Llopiz, Dave Wiley, Irit Altman, Andew Applegate, Peter Auster, Hannes Baumann, Julia Beaty, Deirdre Boelke, Les Kaufman, Pam Loring, Jerry Moxley, Suzanne Paton, Kevin Powers, David Richardson, Jooke Robbins, Jeff Runge, Brian Smith, Caleb Spiegel, Halley Steinmetz
Spatial epidemiological patterns suggest mechanisms of land-sea transmission for Sarcocystis neurona in a coastal marine mammal Spatial epidemiological patterns suggest mechanisms of land-sea transmission for Sarcocystis neurona in a coastal marine mammal
Sarcocystis neurona was recognised as an important cause of mortality in southern sea otters (Enhydra lutris nereis) after an outbreak in April 2004 and has since been detected in many marine mammal species in the Northeast Pacific Ocean. Risk of S. neurona exposure in sea otters is associated with consumption of clams and soft-sediment prey and is temporally associated with runoff...
Authors
Tristan Burgess, M. Tim Tinker, Melissa Miller, Woutrina Smith, James Bodkin, Michael Murray, Linda Nichol, Justin Saarinen, Shawn Larson, Joseph Tomoleoni, Patricia Conrad, Christine K. Johnson
Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort and Chukchi Seas and nearby areas, 1910–2018 Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort and Chukchi Seas and nearby areas, 1910–2018
This report presents data on the approximate locations and methods of discovery of 530 polar bear (Ursus maritimus) maternal dens observed in the Beaufort and Chukchi Seas and neighboring areas from 1910 to 2018, and archived partly by the U.S. Geological Survey, Alaska Science Center, and partly by the U.S. Fish and Wildlife Service, Marine Mammals Management, in Anchorage, Alaska. A...
Authors
George Durner, Steven Amstrup, Todd Atwood, David C. Douglas, Anthony S. Fischbach, Jay Olson, Karyn Rode, Ryan Wilson
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
A core stochastic population projection model for Florida manatees (Trichechus manatus latirostris) A core stochastic population projection model for Florida manatees (Trichechus manatus latirostris)
A stochastic, stage-based population model was developed to describe the life history and forecast the population dynamics of the Florida manatee (Trichechus manatus latirostris) in four separate regions of Florida. This population model includes annual variability in survival and reproductive rates, demographic stochasticity, effects of changes in warm-water capacity, and catastrophes...
Authors
Michael Runge, Carol A. Sanders-Reed, Christopher Fonnesbeck
A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris) A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris)
The Florida manatee (Trichechus manatus latirostris) is an endangered marine mammal endemic to the southeastern United States. The primary threats to manatee populations are collisions with watercraft and the potential loss of warm-water refuges. For the purposes of listing, recovery, and regulation under the Endangered Species Act (ESA), an understanding of the relative effects of the...
Authors
Michael Runge, Carol A. Sanders-Reed, Catherine Langtimm, Christopher Fonnesbeck
A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris) A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris)
The Florida manatee (Trichechus manatus latirostris) is an endangered marine mammal endemic to the southeastern United States. The primary threats to manatee populations are collisions with watercraft and the potential loss of warm-water refuges. For the purposes of listing, recovery, and regulation under the Endangered Species Act (ESA), an understanding of the relative effects of the...
Authors
Michael Runge, Carol A. Sanders-Reed, Catherine Langtimm, Christopher Fonnesbeck
Capture-recapture analysis for estimating manatee reproductive rates Capture-recapture analysis for estimating manatee reproductive rates
Modeling the life history of the endangered Florida manatee (Trichechus manatus latirostris) is an important step toward understanding its population dynamics and predicting its response to management actions. We developed a multi-state mark-resighting model for data collected under Pollock's robust design. This model estimates breeding probability conditional on a female's breeding...
Authors
W. L. Kendall, C.A. Langtimm, C.A. Beck, M.C. Runge
A stage-based model of manatee population dynamics A stage-based model of manatee population dynamics
A stage-structured population model for the Florida manatee (Trichechus manatus latirostris) was developed that explicitly incorporates uncertainty in parameter estimates. The growth rates calculated with this model reflect the status of the regional populations over the most recent 10-yr period. The Northwest and Upper St. Johns River regions have growth rates (8) of 1.037 (95% interval...
Authors
M.C. Runge, C.A. Langtimm, W. L. Kendall
Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic coast of the United States Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic coast of the United States
The West Indian manatee (Trichechus manatus) is endangered by human activities throughout its range, including the U.S. Atlantic coast where habitat degradation from coastal development and manatee deaths from watercraft collisions have been particularly severe. We radio-tagged and tracked 78 manatees along the east coast of Florida and Georgia over a 12-year period (1986-1998). Our...
Authors
C. Deutsch, J.P. Reid, R. K. Bonde, Dean Easton, H. I. Kochman, T. J. O'Shea
Software related to USGS marine mammal research is listed below.
Marine mammals
Marine Mammals Research
Marine Mammals Research
Filter Total Items: 34
No results found.
Recent data (2020-2022) related to USGS marine mammal research is listed below. A complete listing of USGS marine mammal data is available from the button below.
Filter Total Items: 56
Locations Collected 1985-2015 from Female Polar Bears (Ursus maritimus) with Dependent Young Instrumented in the Southern Beaufort Sea with Satellite-linked Transmitters by the USGS Locations Collected 1985-2015 from Female Polar Bears (Ursus maritimus) with Dependent Young Instrumented in the Southern Beaufort Sea with Satellite-linked Transmitters by the USGS
This dataset contains a select subset of Argos and GPS locations collected by satellite data collection systems from collared adult female polar bears that were instrumented in the southern Beaufort Sea between 1985-2015.
Bioelectrical Impedance, Deuterium Dilution, Body Mass, and Morphological Measures of Southern Beaufort Sea Female Polar Bears, Spring 2014-2016 Bioelectrical Impedance, Deuterium Dilution, Body Mass, and Morphological Measures of Southern Beaufort Sea Female Polar Bears, Spring 2014-2016
This dataset contains data from the use of bioelectrical impedance analysis and deuterium injection as methods to estimate the body composition of female polar bears in the southern Beaufort Sea subpopulation. Data are provided on bioelectrical impedance resistance measures, the enrichment level of deuterium oxide that was injected and measured in blood samples, and morphological...
Metabolic Rate, Body Composition, Foraging Success, Behavior, and GPS Locations of Female Polar Bears (Ursus maritimus), Beaufort Sea, Spring, 2014-2016 and Resting Energetics of an Adult Female Polar Bear Metabolic Rate, Body Composition, Foraging Success, Behavior, and GPS Locations of Female Polar Bears (Ursus maritimus), Beaufort Sea, Spring, 2014-2016 and Resting Energetics of an Adult Female Polar Bear
This data package includes 5 child items with data from 9 female polar bears without dependent young in the southern Beaufort Sea in April 2014-2016. Child Item 1: "Doubly-labeled Water, Deuterium Dilution, Body Mass, and Blood Biochemistry Data from Female Polar Bears (Ursus maritimus) in the Southern Beaufort Sea by the USGS in April 2014-2016" Child Item 2: "Resting Metabolic Rates of...
Energetic Costs of Locomotion in Bears Energetic Costs of Locomotion in Bears
This dataset contains measures of tri-axial acceleration, oxygen consumption, and kinematic measures from two captive polar bears and seven captive grizzly bears resting and walking in a metabolic chamber.
Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017 Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017
This dataset contains measures of oxygen consumption and stroke frequency from 1 captive subadult female polar bear (166.5 kg) resting in the water (n = 7 sessions) and swimming and diving in a metabolic swim flume with water circulated at approximately 0.6 km/hr during swimming and diving measurements (n = 6 sessions) in September 2017.
Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012 Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012
The data package "Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012"; provides raw data for examining abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in Glacier Bay National Park and Preserve in southeast Alaska, based on data collected during a series of population-wide aerial surveys. The USGS aerial sea otter surveys have...
Accelerometer Data from Collared Female Polar Bears in the Beaufort Sea, 2009-2016 Accelerometer Data from Collared Female Polar Bears in the Beaufort Sea, 2009-2016
This dataset includes accelerometer data collected on collars deployed on female polar bears in the southern Beaufort Sea from 2009-2016. The accelerometer was built in to collars by Telonics, Inc. and provides a single activity value of the number of seconds active per time interval of data collection. Data were collected every 15-30 minutes. GPS and ARGOs locations collected via...
At-Sea Distribution and Abundance of Seabirds and Marine Mammals off Southern California GIS Resource Database: Aerial seabird and marine mammal surveys off southern California, 1999-2002 At-Sea Distribution and Abundance of Seabirds and Marine Mammals off Southern California GIS Resource Database: Aerial seabird and marine mammal surveys off southern California, 1999-2002
Background - Interest in developing alternative sources of renewable energy to reduce dependence on oil has increased in recent years. Some sources of renewable energy being considered will include power generation infrastructure and support activities located within continental shelf waters, and potentially within deeper waters off the U.S. Pacific coast and beyond state waters (i.e...
Recent publications (2020-2022) related to USGS marine mammal research are listed below. A complete listing of USGS marine mammal publications is available from the button below.
Filter Total Items: 59
Movement-assisted localization from acoustic telemetry data Movement-assisted localization from acoustic telemetry data
Acoustic telemetry technologies are being increasingly deployed to study a variety of aquatic taxa including fishes, reptiles, and marine mammals. Large cooperative telemetry networks produce vast quantities of data useful in the study of movement, resource selection and species distribution. Efficient use of acoustic telemetry data requires estimation of acoustic source locations from...
Authors
Nathan J. Hostetter, Andy Royle
The role of sand lances (Ammodytes sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management The role of sand lances (Ammodytes sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management
The American sand lance (Ammodytes americanus, Ammodytidae) and the Northern sand lance (A. dubius, Ammodytidae) are small forage fishes that play an important functional role in the Northwest Atlantic Ocean (NWA). The NWA is a highly dynamic ecosystem currently facing increased risks from climate change, fishing and energy development. We need a better understanding of the biology...
Authors
Michelle D. Staudinger, Holly Goyert, Justin Suca, Kaycee Coleman, Linda Welch, Joel Llopiz, Dave Wiley, Irit Altman, Andew Applegate, Peter Auster, Hannes Baumann, Julia Beaty, Deirdre Boelke, Les Kaufman, Pam Loring, Jerry Moxley, Suzanne Paton, Kevin Powers, David Richardson, Jooke Robbins, Jeff Runge, Brian Smith, Caleb Spiegel, Halley Steinmetz
Spatial epidemiological patterns suggest mechanisms of land-sea transmission for Sarcocystis neurona in a coastal marine mammal Spatial epidemiological patterns suggest mechanisms of land-sea transmission for Sarcocystis neurona in a coastal marine mammal
Sarcocystis neurona was recognised as an important cause of mortality in southern sea otters (Enhydra lutris nereis) after an outbreak in April 2004 and has since been detected in many marine mammal species in the Northeast Pacific Ocean. Risk of S. neurona exposure in sea otters is associated with consumption of clams and soft-sediment prey and is temporally associated with runoff...
Authors
Tristan Burgess, M. Tim Tinker, Melissa Miller, Woutrina Smith, James Bodkin, Michael Murray, Linda Nichol, Justin Saarinen, Shawn Larson, Joseph Tomoleoni, Patricia Conrad, Christine K. Johnson
Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort and Chukchi Seas and nearby areas, 1910–2018 Catalogue of polar bear (Ursus maritimus) maternal den locations in the Beaufort and Chukchi Seas and nearby areas, 1910–2018
This report presents data on the approximate locations and methods of discovery of 530 polar bear (Ursus maritimus) maternal dens observed in the Beaufort and Chukchi Seas and neighboring areas from 1910 to 2018, and archived partly by the U.S. Geological Survey, Alaska Science Center, and partly by the U.S. Fish and Wildlife Service, Marine Mammals Management, in Anchorage, Alaska. A...
Authors
George Durner, Steven Amstrup, Todd Atwood, David C. Douglas, Anthony S. Fischbach, Jay Olson, Karyn Rode, Ryan Wilson
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
A core stochastic population projection model for Florida manatees (Trichechus manatus latirostris) A core stochastic population projection model for Florida manatees (Trichechus manatus latirostris)
A stochastic, stage-based population model was developed to describe the life history and forecast the population dynamics of the Florida manatee (Trichechus manatus latirostris) in four separate regions of Florida. This population model includes annual variability in survival and reproductive rates, demographic stochasticity, effects of changes in warm-water capacity, and catastrophes...
Authors
Michael Runge, Carol A. Sanders-Reed, Christopher Fonnesbeck
A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris) A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris)
The Florida manatee (Trichechus manatus latirostris) is an endangered marine mammal endemic to the southeastern United States. The primary threats to manatee populations are collisions with watercraft and the potential loss of warm-water refuges. For the purposes of listing, recovery, and regulation under the Endangered Species Act (ESA), an understanding of the relative effects of the...
Authors
Michael Runge, Carol A. Sanders-Reed, Catherine Langtimm, Christopher Fonnesbeck
A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris) A Quantitative Threats Analysis for the Florida Manatee (Trichechus manatus latirostris)
The Florida manatee (Trichechus manatus latirostris) is an endangered marine mammal endemic to the southeastern United States. The primary threats to manatee populations are collisions with watercraft and the potential loss of warm-water refuges. For the purposes of listing, recovery, and regulation under the Endangered Species Act (ESA), an understanding of the relative effects of the...
Authors
Michael Runge, Carol A. Sanders-Reed, Catherine Langtimm, Christopher Fonnesbeck
Capture-recapture analysis for estimating manatee reproductive rates Capture-recapture analysis for estimating manatee reproductive rates
Modeling the life history of the endangered Florida manatee (Trichechus manatus latirostris) is an important step toward understanding its population dynamics and predicting its response to management actions. We developed a multi-state mark-resighting model for data collected under Pollock's robust design. This model estimates breeding probability conditional on a female's breeding...
Authors
W. L. Kendall, C.A. Langtimm, C.A. Beck, M.C. Runge
A stage-based model of manatee population dynamics A stage-based model of manatee population dynamics
A stage-structured population model for the Florida manatee (Trichechus manatus latirostris) was developed that explicitly incorporates uncertainty in parameter estimates. The growth rates calculated with this model reflect the status of the regional populations over the most recent 10-yr period. The Northwest and Upper St. Johns River regions have growth rates (8) of 1.037 (95% interval...
Authors
M.C. Runge, C.A. Langtimm, W. L. Kendall
Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic coast of the United States Seasonal movements, migratory behavior, and site fidelity of West Indian manatees along the Atlantic coast of the United States
The West Indian manatee (Trichechus manatus) is endangered by human activities throughout its range, including the U.S. Atlantic coast where habitat degradation from coastal development and manatee deaths from watercraft collisions have been particularly severe. We radio-tagged and tracked 78 manatees along the east coast of Florida and Georgia over a 12-year period (1986-1998). Our...
Authors
C. Deutsch, J.P. Reid, R. K. Bonde, Dean Easton, H. I. Kochman, T. J. O'Shea
Software related to USGS marine mammal research is listed below.