George G Esslinger

Gulf Watch Alaska Nearshore Component: Sea Otter Aerial Survey Data Katmai National Park and Preserve, 2008-2018

These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Katmai National Park and Preserve from surveys conducted in 2008, 2012, 2015, and 2018. Sea otters are a keystone predator, well known for structuring the nearshore marine ecosystem through their consumption of invertebrate prey. The dataset consists of 3 comma-delimited files (CSV) exported from Microsoft Excel. The data consists of (1) Strip transect counts, (2) Intensive Search Unit (ISU) counts, and (3) Transect coordinates. For each aerial survey, a pilot flew an airplane at an altitude...

Categories: Data, Data Release - Revised; Tags: Abundance, Aerial survey, Alaska, Animals/Vertebrates, Aquatic Biology, All tags... Aquatic ecosystems, Benthic habitat, Biota, Coastal habitat, Distribution, Ecology, Ecology, Ecosystem monitoring, Enhydra lutris, Environment, Gulf of Alaska, Intertidal environments, Katmai National Park and Preserve, Marine environment monitoring, Marine mammals, Otters, Population dynamics, Sea otters, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags

Intertidal and Subtidal Sea Otter Prey Sampling in Mixed Sediment Habitat in Glacier Bay National Park and Preserve, Alaska, 1998 to 2011

This dataset provides clam species abundance and size data from intertidal and subtidal mixed sediment habitats in Glacier Bay National Park and Preserve (GBNPP). Data are provided for all observed clams, horse mussels, or urchins 14 mm or larger. Sampling involved excavating 25 cm of substrate from quadrats (approximately 0.25 sq meter) along transects at random and selected sites, 10 quadrats at the 0 Mean Lower Low Water (MLLW) tide level for intertidal sampling and 20 quadrats at approximately 9 m depth for subtidal sampling. Site and taxonomic information are provided. Abundance and size data are provided in two tables with different data configurations: (1) a compact version with data for those species observed...

Categories: Data, Data Release - Revised; Tags: Alaska, Animal and plant census, Aquatic Biology, Aquatic biology, Benthic habitat, All tags... Benthos, Biota, Bivalves, Clam, Coastal ecosystems, Ecology, Environment, Glacier Bay National Park and Preserve, Macroinvertebrates, Marine ecosystems, Mollusks, Mollusks, Sea urchin, Trophic relationships, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags

Sea Otter Aerial Survey Data from Lower Cook Inlet and the Outer Kenai Peninsula, Alaska, 2002

This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in lower Cook Inlet and the outer Kenai Peninsula, Alaska, based on data collected during a series of aerial surveys from May-Aug 2002. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within the transects, and (3) transect coordinates. **NOTE: 2002 data from survey sections in Kenai Fjords National Park are also included in another USGS data release available at https://doi.org/10.5066/F7CJ8BN7

Categories: Data; Tags: Abundance (organisms), Aerial surveys, Alaska, Animals/Vertebrates, Biota, All tags... Carnivores, Cook Inlet, Ecology, Ecosystem monitoring, Enhydra lutris kenyoni, Environment, Kenai Fjords National Park, Kenai Peninsula, Mammals, Marine mammals, Northern sea otters, Otters, Population density, Population dynamics, Sea otters, Spatial distribution, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags

Three data sets are included here to aid in assessment of the sea otter population collapse in southwest Alaska. One data set consists of results of sea otter surveys conducted between 1959 and 2015 at Bering Island, Russia and a selection of western Aleutian Islands in Alaska. Sea otter counts are reduced to a comparable value of otters per linear kilometer. Another data set consists per-capita and per kilometer recovery rates of stranded sea otter carcasses from locations ranging from Bering Island, Russia, several Aleutian Islands, sites along the Alaska Peninsula, and Prince William Sound, Alaska. These data are mainly from the period 1991-2009 and are from stable populations as well as those in decline or post...

Categories: Data; Tags: Eastern Aleutian Islands, Gulf of Alaska, Kodiak Island, Prince William Sound, USGS Science Data Catalog (SDC), All tags... Western Aleutian Islands, Wildlife Biology, biota, health, sea otters, wildlife biology, wildlife biology, Fewer tags

Gulf Watch Alaska, Benthic Monitoring Component: Sea Otter Aerial Survey Data Kenai Fjords National Park, 2002-2016

These data are is part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Kenai Fjords National Park between 2002 and 2016. Sea otters are a keystone predator, well known for structuring the nearshore marine ecosystem through their consumption of invertebrate prey. The dataset consists of 3 comma delimited files exported from Microsoft Excel. The data consists of 1. Strip transect counts, 2. Intensive Search Unit (ISU) counts, and 3. Transect coordinates. For each aerial survey, a pilot flew an airplane at an altitude of 91m over pre-determined transects while an...

Categories: Data; Tags: Abundance, Aerial survey, Alaska, Animals/Vertebrates, Aquatic Biology, All tags... Aquatic ecosystems, Benthic habitat, Biota, Coastal habitat, Distribution, Ecology, Ecology, Ecosystem monitoring, Enhydra lutris, Environment, Gulf of Alaska, Intertidal environments, Kenai Fjords National Park, Marine environment monitoring, Marine mammals, Otters, Population dynamics, Sea otters, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags