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These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and contain diet data from Black-legged Kittiwakes (BLKI), Rhinoceros Auklets (RHAU), and Tufted puffins (TUPU) located on Middleton Island in Prince William Sound, Gulf of Alaska. The first table consists of information on seabird diet samples including the sampling method and number of prey types identified per sample ("seabirdDiets_foodSample_middletonIsland.csv"). The second table is similar to the first table, however, the samples have been subdivided by individual prey species ("seabirdDiets_samplePrey_middletonIsland.csv"). The third table consists of information specific to sampled prey items, such as prey taxa identification...
In Texas, the USFWS is currently reviewing 11 mussel species for ESA protection and several of these species (e.g., Cyclonaias petrina, Texas Pimpleback, and Lampsilis bracteata, Texas Fatmucket) have been the primary focus of controlled propagation by several federal hatcheries. To date, information on genetic diversity within and across known populations for these species is incomplete and so the justification for their controlled propagation is unclear, and a genetic management plan to guide propagation activities does not exist. These unknowns raise serious questions about whether any of the 11 proposed species are truly in need of and would benefit from controlled propagation. The overall goal of this project...
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This portion of the data release presents terrestrial invertebrate abundance data from samples collected in emergent and shrub vegetation along the edge of the Elwha River estuary, Washington, in 2007 and 2013 (no associated USGS Field Activities numbers because data were collected predominantly by biologists from the Lower Elwha Klallam Tribe). We deployed terrestrial insect fallout traps at ten locations in the east estuary, five replicates each in shrub and emergent (littoral) vegetation habitats. Clear, rectangular traps (2,400 cm2 in 2007 and 3,526 cm2 in 2013) were filled with 5 cm of filtered soapy water and deployed for 72 hours. Invertebrate counts from 2013 were standardized to the 2007 bin size to account...
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These are genetic data collected from replicated samples of 21 Enteroctopus (E. dofleini or a cryptic lineage) in Prince William Sound Alaska to evaluate tissue type, DNA extraction method, and time until analyses are completed on data reliability. Data collected from all samples include two microsatellites identified as possible lineage indicators, and nine microsatellite loci previously identified as polymorphic in both lineages. DNA sequence data from 528 bp of the octopine dehydrogenase (OCDE) gene were also collected.
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Temperatures are warming fastest at high latitudes and annual temperatures have increased by 2-3Ëš C in the Arctic over the second half of the 20th century. Shorebirds respond to cues on theiroverwintering grounds to initiate long migrations to nesting sites throughout the Arctic. Climatedrivenchanges in snowmelt and temperature, which drive invertebrate emergence, may lead to alack of synchrony between the timing of shorebird nesting and the availability of invertebrateprey essential for egg formation and subsequent chick survival. To explore the drivers andpotential magnitude of climate-related shifts in the availability of invertebrate prey, we modeledthe biomass of invertebrates captured in modified Malaise traps...
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More information is needed about species composition, abundance, or distribution of the microfauna and meiofauna living within the interstitial spaces of the littoral zones along the Beaufort Sea coast. Shorebirds depend on meiofauna for food for pre-migratory fattening and these organisms make important contributions to bioremediation of oil spills.The information obtained from this jointly-funded research can contribute to development of mitigation measures and strategies to reduce potential impacts from post-lease exploration and development. This information need extends to the lower trophic levels forming the base of these complex food webs and the biochemistry that influences these relationships. Their contributions...
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Temperatures are warming fastest at high latitudes and annual temperatures have increased by 2-3Ëš C in the Arctic over the second half of the 20th century. Shorebirds respond to cues on their overwintering grounds to initiate long migrations to nesting sites throughout the Arctic. Climate-driven changes in snowmelt and temperature, which drive invertebrate emergence, may lead to a lack of synchrony between the timing of shorebird nesting and the availability of invertebrate prey essential for egg formation and subsequent chick survival. We modeled the biomass of invertebrates captured in modified Malaise traps as a function of accumulated temperature and weather variables for eight North American research camps...
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Oyster reefs provide environmental and economic services within the coastal regions of the United States. Mapping the extent of these reefs and analyzing their composition can be highly beneficial for oyster management and restoration projects. The objectives of this research project included examining the feasibility of the use of low-cost side-scanning sonar (LC-SSS) systems and Unmanned Aircraft Systems (UAS) for mapping intertidal oyster reefs at selected sites within the Galveston Bay system, Texas. Two sites in Bastrop Bay and Bastrop Bayou complex were selected following defined criteria that included the existence of intertidal oyster reefs and no aviation restrictions on the operation of UAS.
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We assessed change in the seasonal timing of insect emergence from tundra ponds near Barrow, Alaska over a four-decade timespan, and explored factors that regulate this significant ecological phenomenon. The early-summer pulse of adult insects emerging from myriad tundra ponds on the Arctic Coastal Plain is an annual event historically coincident with resource demand by tundra-nesting avian consumers. Asymmetrical changes in the seasonal timing of prey availability and consumer needs may impact arctic-breeding shorebirds, eiders, and passerines. We have found evidence of change in the thermal behavior of these arctic wetlands, along with a shift in the phenology of emerging pond insects. Relative to the 1970s, tundra...
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1985 Gulf of Mexico Atlas abstract American oyster Crassostrea virginica Ostion americanoDescription Range: The American oyster, a bivalve mollusc of the family Ostreidae, is found in the western Atlantic from the Gulf of St. Lawrence to the Yucatan Peninsula. In the Gulf, this species occurs throughout estuaries, shallow nearshore waters, and on reefs located near river mouths. Habitat: Large populations of this benthic invertebrate are found in the large estuarine bays and sounds of the Gulf (with most concentrations found within 10-meter depths). Sedentary in character, this invertebrate attaches in clusters to shell reefs, firm mud/shell bottoms and other hard substrates. Feeding and Behavior: The American oyster...
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: ANIMALS/INVERTEBRATES, ANIMALS/INVERTEBRATES, Academics & scientific researchers, Alabama, American oyster, All tags...
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This portion of the data release presents aquatic invertebrate abundance data from samples collected in the Elwha River estuary, Washington, in 2007 and 2013 (no associated USGS Field Activities numbers because data were collected predominantly by biologists from the Lower Elwha Klallam Tribe). Replicate benthic samples were collected at 18 locations throughout the estuary complex using a petite Ponar grab sampler (appx. 2400 mL sample) and sorted through a 500-micron sieve. Samples were fixed in 10 percent formalin for 3 to 5 days before being transferred to 70 percent ethanol until processing. Individuals were identified to the lowest possible taxonomic resolution, but are grouped according to insect Orders in...
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These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe bivalve count and size sampling and observations conducted at intertidal soft-sediment sampling sites in the northern Gulf of Alaska. This dataset consists of five comma separated files (.csv): 1) bivalve taxonomy table, 2) bivalve sampling site table, 3) bivalve count table, 4) bivalve size table, and 5) list of Gulf Watch Alaska principal investigators and collaborators.
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Grasslands provide important habitat for monarch butterflies and other pollinators in the southern Great Plains. The main objective of this project was to provide baseline data for assessing the contribution of grassland management practices to monarch/pollinator habitat. Specific objectives included 1) Developing protocols for evaluating habitat restoration effectiveness and monarch/pollinator population use, 2) Implementing the protocols, 3) Evaluating and revising protocols based on data collected during protocol implementation, and 4) Developing translational science, outreach and communication of project products. The focus of the project has shifted over time with the finalization of the Integrated Monarch...
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These data describe observations of sea otter foraging behavior in Glacier Bay National Park and Preserve. Data consist of dive and surface times, success in prey retrieval, prey item, prey quantity, and size. Additionally, location of observations, and age class, sex, and pup status of the focal sea otter were also recorded.
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These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe mussel sampling and observations conducted in the northern Gulf of Alaska. This dataset consists of six comma separated files (.csv): 1) mussel sampling site layout information, 2) mussel counts for mussels greater than 20 millimeters in a quadrat, 3) mussel size measurements for mussels greater than 20 millimeters in a quadrat, 4) mussel counts for all mussels collected from core samples, 5) mussel size frequencies for all mussels collected from core samples, and 6) list of Gulf Watch Alaska principal investigators and collaborators.
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The primary goal of this project was to predict climate-related changes in the timing and duration of insect prey availability for arctic-breeding shorebirds. Researchers coordinated closely with the Arctic Shorebird Demographics Network, whose collaborators sampled aquatic insect emergence, terrestrial insect activity, and associated environmental data at sites across arctic Alaska and Canada. Using ASDN data, they developed mathematical models that relate the timing and duration of insect emergence and activity to accumulated temperature, weather, and other environmental variables. They used these models to predict future changes in the timing of arctic insect availability based on climate change projections....
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The Gulf Coast Vulnerability Assessment utilized expert opinion that was gathered through the Standardized Index of Vulnerability and Value (SIVVA) tool, which is an Excel-based vulnerability and prioritization tool that enables assessors to provide input in a relatively short time and allows for relatively seamless compilation of results.The vulnerability of each ecosystem and associated species was conducted by subregion, excluding those subregions where the species did not occur in significant numbers. Assessors were asked to evaluate species based on the habitats they use in a particular subregion. Because vulnerability can vary with life-stage for many species, assessors were asked to consider the most vulnerable...
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANIMALS/INVERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, ANIMALS/VERTEBRATES, All tags...
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Spatial patterns in mussel richness and endemism (i.e., weighted and corrected weighted endemism) at stream reach, HUC4, HUC6, and HUC8 spatial scales were characterized. Stream SR was estimated by summing the total number of mussel species predicted within each stream. Stream-level weighted endemism was calculated by weighting each species’ presence in the stream by the inverse of the total number of streams it was predicted to occupy, then summing across all species predicted present within the stream. This biodiversity metric therefore provides context about the range extent of the species predicted within the stream (e.g., higher values indicate either high richness or the presence of several range-restricted...
map background search result map search result map Aquatic invertebrate abundance in the Elwha River estuary, Washington, in 2007 and 2013 Terrestrial invertebrate abundance in the Elwha River estuary, Washington, in 2007 and 2013. Oysters 2011 - Gulf of Mexico Climate Effects on Arctic Food Resources: Predictive Models for Surface-Available Invertebrate Biomass Enteroctopus Sampling Effects on Genetic Data, Prince William Sound, Alaska, 2012-2015 Changing Seasonality of Invertebrate Food Resources across the Arctic Coastal Plain ASDN Terrestrial Invertebrates and Weather Access Database Climate Effects on Arctic Food Resources: Retrospective Analysis of Rate of Advancement of Invertebrate Phenology Gulf of Mexico Habitat and Species Vulnerability Climate effects on Arctic Food Resources: Modeling the Timing and Duration of Aquatic Insect Emergence from Tundra Ponds Shorebirds and Invertebrate Distribution on Delta Mudflats along the Beaufort Sea Final Report: Mapping Shallow Reefs Using Low-cost Scanning Sonar and Drone Photography Systems Final Report: Monarch-pollinator monitoring, tracking and evaluation of grassland habitat and management practices in the southern plains Intertidal Mussel (Mytilus) Data from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park Seabird Diet Data Collected on Middleton Island, Gulf of Alaska Intertidal Soft-Sediment Bivalves from Prince William Sound, Kachemak Bay, Katmai National Park and Preserve, and Kenai Fjords National Park Midwest Regional Mussel Hotspots and Species Richness Estimates Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019 Terrestrial invertebrate abundance in the Elwha River estuary, Washington, in 2007 and 2013. Aquatic invertebrate abundance in the Elwha River estuary, Washington, in 2007 and 2013 Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019 Final Report: Mapping Shallow Reefs Using Low-cost Scanning Sonar and Drone Photography Systems Changing Seasonality of Invertebrate Food Resources across the Arctic Coastal Plain Enteroctopus Sampling Effects on Genetic Data, Prince William Sound, Alaska, 2012-2015 Seabird Diet Data Collected on Middleton Island, Gulf of Alaska Shorebirds and Invertebrate Distribution on Delta Mudflats along the Beaufort Sea Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Intertidal Soft-Sediment Bivalves from Prince William Sound, Kachemak Bay, Katmai National Park and Preserve, and Kenai Fjords National Park Intertidal Mussel (Mytilus) Data from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park Final Report: Monarch-pollinator monitoring, tracking and evaluation of grassland habitat and management practices in the southern plains Oysters 2011 - Gulf of Mexico Gulf of Mexico Habitat and Species Vulnerability Midwest Regional Mussel Hotspots and Species Richness Estimates Climate Effects on Arctic Food Resources: Predictive Models for Surface-Available Invertebrate Biomass ASDN Terrestrial Invertebrates and Weather Access Database Climate Effects on Arctic Food Resources: Retrospective Analysis of Rate of Advancement of Invertebrate Phenology Climate effects on Arctic Food Resources: Modeling the Timing and Duration of Aquatic Insect Emergence from Tundra Ponds