Filters: Tags: Mussels (X) > Date Range: {"choice":"year"} (X)
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The database includes point and stream reach locations of imperiled mussels identified by federal and state governments, universities, and museums in the states of Louisiana, Oklahoma and Texas. Point locations are linked to stream reaches of the National Hydrography Dataset (NHD). Also in this database is the imperiled mussel presence in HUC12 watersheds in Oklahoma from the Watershed Boundary Dataset downloaded on 20150318. This dataset presents the locations of all mussels identified as a Species of Greatest Conservation Need (SGCN) assembled by the Oklahoma Department of Wildlife Conservation for the Oklahoma Natural Heritage Program. Throughout the remainder of these metadata, this group of organisms will be...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Academics & scientific researchers,
Conservation NGOs,
Conservation design,
Data,
Federal resource managers,
The southeast United States’ rivers and streams support the most diverse unionid (freshwater mussel) fauna on earth. These species are a focus of the GCP LCC because their sensitivity to habitat degradation, fish community changes, and changes in water quality and quantity make them akin to the proverbial ‘canary in the coal mine.’ They are essential components of riverine ecosystems, influencing nutrient cycling and macro-invertebrate diversity. Their decline during the past century stems from overharvest, water pollution, habitat fragmentation, and introduction of nonindigenous predators and exotic mollusks; however, habitat degradation has been the most influential.
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2015,
2016,
Academics & scientific researchers,
Conservation Design,
Conservation NGOs,
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.
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...
Categories: Data;
Tags: ANIMALS/INVERTEBRATES,
BIOLOGICAL CLASSIFICATION,
BIOSPHERE,
BIVALVES,
Data,
Rivers and streams of the southeastern United States support the most diverse unionid (freshwater) mussel fauna on earth. Unionids are essential components of riverine ecosystems, often dominating benthic biomass and influencing nutrient cycling and macro-invertebrate diversity. Unionids are one of the most endangered groups of freshwater organisms in the United States. The decline of native freshwater mussels during the past century has resulted from a variety of factors including overharvest, water pollution, land use alteration, and the introduction of invasive species. However, the most influential anthropogenic factor impacting unionids has been habitat degradation. Another factor that compounds efforts to...
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