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Publications

Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.

Filter Total Items: 5585

Biogeography of freshwater mussels (Bivalvia: Unionida) in Texas and implications on conservation biology Biogeography of freshwater mussels (Bivalvia: Unionida) in Texas and implications on conservation biology

Aim Biogeography seeks to identify and explain the spatial distributions of species and has become an important tool used by conservationists to protect and manage aquatic organisms. Texas, located in the southwestern United States, is home to 52 species of freshwater mussels, 9 of which are endemic to Texas and 7 that are endemic to Texas and neighboring states or countries. There have...
Authors
Michael de Moulpied, Chase H. Smith, Clint R. Robertson, Nathan Johnson, Roel Lopez, Charles R. Randklev

The population genetics of the causative agent of snake fungal disease indicate recent introductions to the USA The population genetics of the causative agent of snake fungal disease indicate recent introductions to the USA

Snake fungal disease (SFD; ophidiomycosis), caused by the pathogen Ophidiomyces ophiodiicola (Oo), has been documented in wild snakes in North America and Eurasia, and is considered an emerging disease in the eastern United States of America. However, a lack of historical disease data has made it challenging to determine whether Oo is a recent arrival to the USA or whether SFD emergence...
Authors
Jason T. Ladner, Jonathan M. Palmer, Cassandra L. Ettinger, Jason E. Stajich, Terence M. Farrell, Brad M. Glorioso, Becki Lawson, Steven J. Price, Anne G. Stengle, Daniel A. Grear, Jeffrey M. Lorch

Using structured decision making to evaluate potential management responses to detection of dreissenid mussel (Dreissena spp.) environmental DNA Using structured decision making to evaluate potential management responses to detection of dreissenid mussel (Dreissena spp.) environmental DNA

Environmental (e)DNA tools are sensitive and cost-effective for early detection of invasive species. However, the uncertainty associated with the interpretation of positive eDNA detections makes it challenging to determine appropriate natural resource management responses. Multiple sources of error can give rise to positive detections of eDNA in a sample when individuals of that species...
Authors
Adam Sepulveda, David R. Smith, Katherine M. O'Donnell, Nathan Owens, Brittany White, Cathy A. Richter, Christopher M. Merkes, Skylar Wolf, Mike Rau, Matthew Neilson, Wesley M. Daniel, Christine E. Dumoulin, Margaret Hunter

Worldwide wetland loss and conservation of biodiversity and ecosystem services Worldwide wetland loss and conservation of biodiversity and ecosystem services

Aim: Best strategies for future conservation and management to address global and regional trends in wetland loss and degradation are assessed in this article. Main concepts covered: Direct drivers of wetland loss and change include land drainage and filling, hydrologic alteration, degradation from pollutants and sediments, and conversion to agriculture, urban and industrial usage...
Authors
Beth Middleton

Wetlands under global change Wetlands under global change

Wetlands are among the ecosystem types most threatened by global change, including both climate change and other anthropogenic factors such as sea level rise, urban development, deforestation, agricultural land use, drainage, levees, tidal flow restrictions, pollution, eutrophication, and fires. Wetlands not only store disproportionate amounts of carbon compared to other terrestrial...
Authors
Eric Ward

2022 Emergency Assistance Act — USGS recovery activities 2022 Emergency Assistance Act — USGS recovery activities

The Extending Government Funding and Delivering Emergency Assistance Act (Public Law 117-43) was enacted on September 30, 2021. The U.S. Geological Survey received $26.3 million in supplemental funding to repair and replace facilities and equipment, collect high-resolution elevation data, and complete scientific assessments to support direct recovery and rebuilding decisions in areas...
Authors
Jo Ellen Hinck, Joseph Stachyra

Using a multi-model ensemble approach to determine biodiversity hotspots with limited occurrence data in understudied areas: An example using freshwater mussels in México Using a multi-model ensemble approach to determine biodiversity hotspots with limited occurrence data in understudied areas: An example using freshwater mussels in México

Species distribution models (SDMs) are an increasingly important tool for conservation particularly for difficult-to-study locations and with understudied fauna. Our aims were to (1) use SDMs and ensemble SDMs to predict the distribution of freshwater mussels in the Pánuco River Basin in Central México; (2) determine habitat factors shaping freshwater mussel occurrence; and (3) use...
Authors
Alexander H. Kiser, Kevin S. Cummings, Jeremy S. Tiemann, Chase H. Smith, Nathan A. Johnson, Roel R. Lopez, Charles R. Randklev

Social and reproductive behaviors Social and reproductive behaviors

Sirenian social and reproductive behaviors lack much complexity or diversity. Whereas sirenians are usually sighted as solitary, or as cows with single calves, aggregations of many individuals can occur. Persistent social groupings are unknown. Home ranges are widely overlapping. Mating systems of dugongs (Dugong dugon) have been variously described as leks or as scramble promiscuity...
Authors
Thomas J. O'Shea, Cathy Beck, Amanda J. Hodgson, Lucy W Keith-Diagne, Miriam Marmontel

A forested wetland at a climate-induced tipping-point: 17-year demographic evidence of widespread tree recruitment failure A forested wetland at a climate-induced tipping-point: 17-year demographic evidence of widespread tree recruitment failure

Regeneration and survival of forested wetlands are affected by environmental variables related to the hydrologic regime. Climate change, specifically alterations to precipitation patterns, may have outsized effects on these forests. In Tennessee, USA, precipitation has increased by 15% since 1960. The goal of our research was to assess the evidence for whether this change in...
Authors
Jonathan Evans, Sarah McCarthy-Neumann, Angus Pritchard, Jennifer M. Cartwright, William J. Wolfe

Toxicity of wildland fire-fighting chemicals in pulsed exposures to rainbow trout and fathead minnows Toxicity of wildland fire-fighting chemicals in pulsed exposures to rainbow trout and fathead minnows

Intrusions of fire-fighting chemicals in streams can result from containment and suppression of wildfires and may be harmful to native biota. We investigated the toxicity of seven current-use fire-fighting chemicals to juvenile rainbow trout (Oncorhynchus mykiss) and fathead minnows (Pimephales promelas) by simulating chemical intrusions under variable field conditions to provide insight...
Authors
Holly J. Puglis, Michael G. Iacchetta, Christina M. Mackey

Presence of the herbaceous marsh species Schoenoplectus americanus enhances surface elevation gain in transitional coastal wetland communities exposed to elevated CO2 and sediment deposition events Presence of the herbaceous marsh species Schoenoplectus americanus enhances surface elevation gain in transitional coastal wetland communities exposed to elevated CO2 and sediment deposition events

Coastal wetlands are dynamic ecosystems that exist along a landscape continuum that can range from freshwater forested wetlands to tidal marsh to mudflat communities. Climate-driven stressors, such as sea-level rise, can cause shifts among these communities, resulting in changes to ecological functions and services. While a growing body of research has characterized the landscape-scale...
Authors
Camille L. Stagg, Claudia Laurenzano, William C. Vervaeke, Ken Krauss, Karen L. McKee
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