Filters: Tags: Unionidae (X) > Categories: Data (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Barbara St. John White Nathan A Johnson Ecosystems USGS Leetown Science Center Northern Appalachian Research Laboratory Eastern Ecological Science Center More... Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (1) Harvest Set (2) Tag Schemes None (1) GNIS (1) Geographic Names Information System (GNIS) (1) Not Applicable (1) View Results as: JSON ATOM CSV

Cumulative spring discharge and survey effort influence threatened Suwannee moccasinshell, Medionidus walkeri, occupancy and detection Freshwater mussels (Unionidae) are among the most imperiled groups of organisms in the world. Unionids are plagued with a lack of basic information regarding species distributions, life history characteristics, and ecological and biological requirements. We assessed the influence of hydrologic factors on the occurrence of the Suwannee Moccasinshell, Medionidus walkeri, a federally threatened freshwater mussel species endemic to the Suwannee River basin in Georgia and Florida. We also assessed the influence of survey effort on detection of M. walkeri during field surveys. All current (2013-2016) mussel survey records in the Suwannee River Basin were compiled, and cumulative discharge contributed by upstream springs... Categories: Data; Tags: Conservation, Distribution, Hydrology, Ichetucknee River, Imperiled species, All tags... Little River, Mill Creek, Modeling, Monitoring, Santa Fe River, Suwannee River, Tidal influence, USGS Science Data Catalog (SDC), Unionidae, Unmarked, Withlacoochee River, Fewer tags Qualitative and quantitative surveys of native freshwater mussels in the upper and middle Delaware River (2000-2002) Data is included for two types of field surveys conducted for freshwater mussels in the mainstem of the middle and upper Delaware River in the Mid-Atlantic region of the United States from 2000-2002. Timed search (qualitative) surveys were conducted during 2000-2001 from a point at the confluence of the East and West Branches of the Delaware River near Hancock, NY continuously downstream to a point at the mouth of the Paulins Kill River near Columbia, NJ. In this qualitative survey, mussel species and counts were collected in the field catch-per-unit-effort (CPUE) data was determined for all mussel species within each of 1,095 consecutive stream sections ~200 m in length. Subsequent quantitative surveys were conducted... Categories: Data; Tags: Aquatic Biology, Delaware River, Delaware Water Gap National Recreation Area, Ecology, New Jersey, All tags... New York, Pennsylvania, USGS Science Data Catalog (SDC), Unionidae, Upper Delaware Scenic and Recreational River, Water Resources, abundance, catch-per-unit-effort, distribution, freshwater mussel, population size, Fewer tags