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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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Temperatures are warming fastest at high latitudes and annual temperatures have increased by 2-3˚ 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...
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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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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Temperatures are warming fastest at high latitudes and annual temperatures have increased by 2-3˚ 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...
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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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...
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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Oyster reefs are one of the most important environmental and economic resources within the coastal regions of the United States. Although oyster reefs in deeper water have been mapped, the extent and condition of intertidal reefs has not been sufficiently inventoried in most states. Understanding the geographic extent and condition of intertidal oyster reef and shell bottoms is important for assessing parental stock and to determine potential recruitment bottlenecks for oysters within an estuary. These intertidal areas have traditionally served as a sanctuary from commercial harvest pressure due to closures, safety, and operational barriers preventing the harvesting of oysters in shallow water. The location...
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We assessed change in the seasonal timing of insect emergence from tundra ponds near Barrow, Alaskaover 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 Plainis 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 arcticbreedingshorebirds, eiders, and passerines. We have found evidence of change in the thermal behaviorof these arctic wetlands, along with a shift in the phenology of emerging pond insects. Relative to the1970s, tundra ponds...
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This portion of the data release presents fish diet data from Chinook and coho salmon collected in the Elwha River estuary, Washington, in 2006, 2007, 2013, and 2014 (there are no associated USGS Field Activities numbers because data were collected predominantly by biologists from the Lower Elwha Klallam Tribe). Fish were collected using a beach seine at six locations throughout the estuary. Fish were transferred to buckets containing aerated ambient water and kept cool until handling. We anesthetized fish in a diluted solution of tricaine methanesulfonate (MS-222) to count, identify, and measure fork length (FL) to the nearest mm and weight to the nearest 0.1 g. After recovery from anesthesia, all fish were released...


    map background search result map search result map Mapping shallow reefs using low-cost side scanning sonar and drone photography systems 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 Changing Seasonality of Invertebrate Food Resources across the Arctic Coastal Plain Seasonality of Invertebrates Final Report 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 Diet of Chinook and coho salmon in the Elwha River estuary, Washington, before and during dam removal Final Report: Monarch-pollinator monitoring, tracking and evaluation of grassland habitat and management practices in the southern plains 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 Diet of Chinook and coho salmon in the Elwha River estuary, Washington, before and during dam removal Mapping shallow reefs using low-cost side scanning sonar and drone photography systems 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 Seasonality of Invertebrates Final Report Shorebirds and Invertebrate Distribution on Delta Mudflats along the Beaufort Sea 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 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