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Mary Brown

Mary Brown is a Fish Biologist at the USGS Wetland and Aquatic Research Center. 

Science and Products

Filter Total Items: 19
Fish Slam 2016 group

Florida Non-Native Fish Action Alliance

The Florida Non-Native Fish Action Alliance brings together federal and state agencies, academic institutions, and non-governmental organizations to address the need for documenting and managing the non-native fishes introduced to the state's waters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Florida Non-Native Fish Action Alliance

Florida Non-Native Fish Action Alliance

The Florida Non-Native Fish Action Alliance brings together federal and state agencies, academic institutions, and non-governmental organizations to address the need for documenting and managing the non-native fishes introduced to the state's waters.
Learn More
Backpack electrofishing crew at Pinecrest Gardens

Fish Slam - Fall 2016

November 1 - 2, 2016 – Eight teams of fishery biologists from the US Geological Survey (USGS), US Fish and Wildlife Service - Peninsular Florida Fisheries Office and Welaka National Fish Hatchery (USFWS), the National Park Service (NPS), Florida Fish and Wildlife Conservation Commission (FWC), Florida International University (FIU), and Zoo Miami sampled 20 sites for non-native fishes in Palm...
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam - Fall 2016

Fish Slam - Fall 2016

November 1 - 2, 2016 – Eight teams of fishery biologists from the US Geological Survey (USGS), US Fish and Wildlife Service - Peninsular Florida Fisheries Office and Welaka National Fish Hatchery (USFWS), the National Park Service (NPS), Florida Fish and Wildlife Conservation Commission (FWC), Florida International University (FIU), and Zoo Miami sampled 20 sites for non-native fishes in Palm...
Learn More
Bullseye snakehead (Channa marulius)

Fish Slam - Spring 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam - Spring 2016

Fish Slam - Spring 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida.
Learn More
Lionfish are spreading through the Western North Atlantic, Caribbean Sea, and the Gulf

Lionfish Distribution, Geographic Spread, Biology, and Ecology

Many aspects of lionfish biology are studied at the USGS Wetland and Aquatic Research Center. As part of the U.S. Geological Survey Nonindigenous Aquatic Species database, the distribution of lionfish is tracked over time.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Wetland and Aquatic Research Center
Lionfish Distribution, Geographic Spread, Biology, and Ecology

Lionfish Distribution, Geographic Spread, Biology, and Ecology

Many aspects of lionfish biology are studied at the USGS Wetland and Aquatic Research Center. As part of the U.S. Geological Survey Nonindigenous Aquatic Species database, the distribution of lionfish is tracked over time.
Learn More
Pike Killifish (Belonesox belizanus)

Impacts of Non-Native Fishes in the Florida Everglades

The Florida Everglades is the largest wetland ecosystem in the United States and supports a diverse flora and fauna, including many rare species.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Impacts of Non-Native Fishes in the Florida Everglades

Impacts of Non-Native Fishes in the Florida Everglades

The Florida Everglades is the largest wetland ecosystem in the United States and supports a diverse flora and fauna, including many rare species.
Learn More
Grass Carp, Ctenopharyngodon idella

Fish Slam 2015

November 3, 2015 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), and Florida International University (FIU) sampled for non-native fishes in canals, ponds and ditches in and around the Plantation/Davie area of Broward County, FL.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam 2015

Fish Slam 2015

November 3, 2015 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), and Florida International University (FIU) sampled for non-native fishes in canals, ponds and ditches in and around the Plantation/Davie area of Broward County, FL.
Learn More
Typical habitats sampled during the Fish Slam

Fish Slam 2014

On November 20, 2014, eight teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), U.S. National Park Service (NPS), and Florida International University (FIU) gathered for a one-day sampling event to collect non-native fishes from canals, ponds and ditches in Miami-Dade County, FL.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam 2014

Fish Slam 2014

On November 20, 2014, eight teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), U.S. National Park Service (NPS), and Florida International University (FIU) gathered for a one-day sampling event to collect non-native fishes from canals, ponds and ditches in Miami-Dade County, FL.
Learn More
No Result Found
No results found.
Filter Total Items: 25

Mycoplasma agassizii in Morafka's desert tortoise (Gopherus morafkai) in Mexico Mycoplasma agassizii in Morafka's desert tortoise (Gopherus morafkai) in Mexico

We conducted health evaluations of 69 wild and 22 captive Morafka's desert tortoises (Gopherus morafkai) in Mexico between 2005 and 2008. The wild tortoises were from 11 sites in the states of Sonora and Sinaloa, and the captive tortoises were from the state-managed Centro Ecológico de Sonora Zoo in Hermosillo and a private residence in the town of Alamos. We tested 88 tortoises for...
Authors
Kristin Berry, Mary B. Brown, Mercy Vaughn, Timothy Gowan, Mary Hasskamp, Ma. Torres
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Anuran site occupancy and species richness as tools for evaluating restoration of a hydrologically-modified landscape Anuran site occupancy and species richness as tools for evaluating restoration of a hydrologically-modified landscape

A fundamental goal of wetland restoration is to reinstate pre-disturbance hydrological conditions to degraded landscapes, facilitating recolonization by native species and the production of resilient, functional ecosystems. To evaluate restoration success, baseline conditions need to be determined and a reference target needs to be established that will serve as an ecological blueprint...
Authors
Susan Walls, J. Waddle, William Barichivich, Ian Bartoszek, Mary E. Brown, J. Hefner, Melinda J. Schuman
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Mycoplasmosis and upper respiratory tract disease of tortoises: a review and update Mycoplasmosis and upper respiratory tract disease of tortoises: a review and update

Tortoise mycoplasmosis is one of the most extensively characterized infectious diseases of chelonians. A 1989 outbreak of upper respiratory tract disease (URTD) in free-ranging Agassiz's desert tortoises (Gopherus agassizii) brought together an investigative team of researchers, diagnosticians, pathologists, immunologists and clinicians from multiple institutions and agencies. Electron...
Authors
Elliott R. Jacobson, Mary B. Brown, Lori Wendland, Daniel Brown, Paul Klein, Mary Christopher, Kristin Berry
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Variation in salinity tolerance among larval anurans: implications for community composition and the spread of an invasive, non-native species Variation in salinity tolerance among larval anurans: implications for community composition and the spread of an invasive, non-native species

Amphibians in freshwater coastal wetlands periodically experience acute exposure to salinity from hurricane-related overwash events, as well as chronic exposure associated with rising sea levels. In a comparative experimental approach, we examined whether seven species of anuran amphibians vary in their tolerance to changes in salinity. In a laboratory study, we exposed larval Hyla...
Authors
Mary Brown, Susan C. Walls
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Detection of Mycoplasma agassizii in the Texas Tortoise (Gopherus berlandieri) Detection of Mycoplasma agassizii in the Texas Tortoise (Gopherus berlandieri)

Mycoplasma agassizii causes upper respiratory tract disease (URTD) in Texas tortoises (Gopherus berlandieri). To determine exposure to and shedding of M. agassizii, we collected blood samples and nasal swabs from 40 free-ranging Texas tortoises on public and private lands in Texas, USA, from May to October 2009. We used an enzyme-linked immunosorbent assay (ELISA) to detect M. agassizii...
Authors
Amanda Guthrie, C. White, Mary B. Brown, Thomas deMaar
By
Ecosystems Mission Area, National Wildlife Health Center

Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria

Background: In 2010, Médecins Sans Frontières discovered a lead poisoning outbreak linked to artisanal gold processing in northwestern Nigeria. The outbreak has killed approximately 400 young children and affected thousands more. Objectives: Our aim was to undertake an interdisciplinary geological- and health-science assessment to clarify lead sources and exposure pathways, identify...
Authors
Geoffrey Plumlee, James Durant, Suzette Morman, Antonio Neri, Ruth Wolf, Carrie Dooyema, Philip Hageman, Heather Lowers, Gregory L. Fernette, Gregory Meeker, William Benzel, Rhonda Driscoll, Cyrus Berry, James Crock, Harland L. Goldstein, Monique Adams, Casey Bartrem, Simba Tirima, Behbod Behrooz, Ian von Lindern, Mary Brown
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Denver Microbeam Laboratory

Influence of drought on salamander occupancy of isolated wetlands on the southeastern Coastal Plain of the United States Influence of drought on salamander occupancy of isolated wetlands on the southeastern Coastal Plain of the United States

In the southeastern U.S., changes in temperature and precipitation over the last three decades have been the most dramatic in winter and spring seasons. Continuation of these trends could negatively impact pond-breeding amphibians, especially those that rely on winter and spring rains to fill seasonal wetlands, trigger breeding, and ensure reproductive success. From 2009 to 2012, we...
Authors
Susan C. Walls, William Barichivich, Mary Brown, David E. Scott, Blake Hossack
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate

The Class Amphibia is one of the most severely impacted taxa in an on-going global biodiversity crisis. Because amphibian reproduction is tightly associated with the presence of water, climatic changes that affect water availability pose a particularly menacing threat to both aquatic and terrestrial-breeding amphibians. We explore the impacts that one facet of climate change—that of...
Authors
Susan C. Walls, William Barichivich, Mary Brown
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Salinity tolerance of goldfish, Carassius auratus, a non-native fish in the United States Salinity tolerance of goldfish, Carassius auratus, a non-native fish in the United States

No abstract available.
Authors
Pamela J. Schofield, Mary Brown, Pamela Fuller
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Application of diagnostic tests for mycoplasmal infections of desert and gopher tortoises with management recommendations Application of diagnostic tests for mycoplasmal infections of desert and gopher tortoises with management recommendations

Mycoplasmosis is a transmissible upper respiratory tract disease that has affected plans for management and conservation of wild desert and gopher tortoises in the United States. Although impact of mycoplasmosis on populations of desert and gopher tortoises is unknown, increased prevalence of seropositive animals as well as field observations of clinically ill tortoises have occurred in...
Authors
D.R. Brown, Isabella Schumacher, Grace Mclaughlin, L.D. Wendland, Mary E. Brown, P.A. Klein, E.R. Jacobson
By
Ecosystems Mission Area, National Wildlife Health Center

Mycoplasma agassizii sp., nov., isolated from the upper respiratory tract of the desert tortoise (Gopherus agassizii) and the gopher tortoise (Gopherus polyphemus). Mycoplasma agassizii sp., nov., isolated from the upper respiratory tract of the desert tortoise (Gopherus agassizii) and the gopher tortoise (Gopherus polyphemus).

Biochemical, serological and molecular genetic studies were performed on seven mycoplasma isolates that were recovered from the upper respiratory tract of clinically ill desert tortoises. The isolates were serologically related to each other but serologically distinct from previously described species. Unique mycoplasma species-specific 16S rRNA nucleotide sequences were found in the...
Authors
Mary E. Brown, D.R. Brown, P.A. Kelin, G.S. McLaughlin, Isabella Schumacher, E.R. Jacobson, H.P. Adams, J.G. Tully
By
Ecosystems Mission Area, National Wildlife Health Center

Seroepidemiology of upper respiratory tract disease in the desert tortoise of California Seroepidemiology of upper respiratory tract disease in the desert tortoise of California

Several factors have combined with an upper respiratory tract disease (URTD) to produce declines on some population numbers of desert tortoises (Gopherus agassizii) in the western USA. This study was designed to determine the seroepidemiology of URTD in a population of wild adult tortoises at the Desert Tortoise Research Natural Area (DTNA) study site in Kern County (California, USA)...
Authors
Mary B. Brown, Kristin Berry, Isabella Schumacher, Kenneth Nagy, Mary Christopher, Paul Klein
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Science and Products

Filter Total Items: 19
Fish Slam 2016 group

Florida Non-Native Fish Action Alliance

The Florida Non-Native Fish Action Alliance brings together federal and state agencies, academic institutions, and non-governmental organizations to address the need for documenting and managing the non-native fishes introduced to the state's waters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Florida Non-Native Fish Action Alliance

Florida Non-Native Fish Action Alliance

The Florida Non-Native Fish Action Alliance brings together federal and state agencies, academic institutions, and non-governmental organizations to address the need for documenting and managing the non-native fishes introduced to the state's waters.
Learn More
Backpack electrofishing crew at Pinecrest Gardens

Fish Slam - Fall 2016

November 1 - 2, 2016 – Eight teams of fishery biologists from the US Geological Survey (USGS), US Fish and Wildlife Service - Peninsular Florida Fisheries Office and Welaka National Fish Hatchery (USFWS), the National Park Service (NPS), Florida Fish and Wildlife Conservation Commission (FWC), Florida International University (FIU), and Zoo Miami sampled 20 sites for non-native fishes in Palm...
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam - Fall 2016

Fish Slam - Fall 2016

November 1 - 2, 2016 – Eight teams of fishery biologists from the US Geological Survey (USGS), US Fish and Wildlife Service - Peninsular Florida Fisheries Office and Welaka National Fish Hatchery (USFWS), the National Park Service (NPS), Florida Fish and Wildlife Conservation Commission (FWC), Florida International University (FIU), and Zoo Miami sampled 20 sites for non-native fishes in Palm...
Learn More
Bullseye snakehead (Channa marulius)

Fish Slam - Spring 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam - Spring 2016

Fish Slam - Spring 2016

May 23, 2016 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), Florida Museum of Natural History (FLMNH), University of Florida (UF), and Florida International University (FIU) sampled 12 sites for non-native fishes in Broward and Miami-Dade counties in southeastern Florida.
Learn More
Lionfish are spreading through the Western North Atlantic, Caribbean Sea, and the Gulf

Lionfish Distribution, Geographic Spread, Biology, and Ecology

Many aspects of lionfish biology are studied at the USGS Wetland and Aquatic Research Center. As part of the U.S. Geological Survey Nonindigenous Aquatic Species database, the distribution of lionfish is tracked over time.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Wetland and Aquatic Research Center
Lionfish Distribution, Geographic Spread, Biology, and Ecology

Lionfish Distribution, Geographic Spread, Biology, and Ecology

Many aspects of lionfish biology are studied at the USGS Wetland and Aquatic Research Center. As part of the U.S. Geological Survey Nonindigenous Aquatic Species database, the distribution of lionfish is tracked over time.
Learn More
Pike Killifish (Belonesox belizanus)

Impacts of Non-Native Fishes in the Florida Everglades

The Florida Everglades is the largest wetland ecosystem in the United States and supports a diverse flora and fauna, including many rare species.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Impacts of Non-Native Fishes in the Florida Everglades

Impacts of Non-Native Fishes in the Florida Everglades

The Florida Everglades is the largest wetland ecosystem in the United States and supports a diverse flora and fauna, including many rare species.
Learn More
Grass Carp, Ctenopharyngodon idella

Fish Slam 2015

November 3, 2015 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), and Florida International University (FIU) sampled for non-native fishes in canals, ponds and ditches in and around the Plantation/Davie area of Broward County, FL.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam 2015

Fish Slam 2015

November 3, 2015 – Five teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), the National Park Service (NPS), and Florida International University (FIU) sampled for non-native fishes in canals, ponds and ditches in and around the Plantation/Davie area of Broward County, FL.
Learn More
Typical habitats sampled during the Fish Slam

Fish Slam 2014

On November 20, 2014, eight teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), U.S. National Park Service (NPS), and Florida International University (FIU) gathered for a one-day sampling event to collect non-native fishes from canals, ponds and ditches in Miami-Dade County, FL.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Land Management Research Program, Wetland and Aquatic Research Center
Fish Slam 2014

Fish Slam 2014

On November 20, 2014, eight teams of fishery biologists from the U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), Florida Fish and Wildlife Conservation Commission (FWC), U.S. National Park Service (NPS), and Florida International University (FIU) gathered for a one-day sampling event to collect non-native fishes from canals, ponds and ditches in Miami-Dade County, FL.
Learn More
No Result Found
No results found.
Filter Total Items: 25

Mycoplasma agassizii in Morafka's desert tortoise (Gopherus morafkai) in Mexico Mycoplasma agassizii in Morafka's desert tortoise (Gopherus morafkai) in Mexico

We conducted health evaluations of 69 wild and 22 captive Morafka's desert tortoises (Gopherus morafkai) in Mexico between 2005 and 2008. The wild tortoises were from 11 sites in the states of Sonora and Sinaloa, and the captive tortoises were from the state-managed Centro Ecológico de Sonora Zoo in Hermosillo and a private residence in the town of Alamos. We tested 88 tortoises for...
Authors
Kristin Berry, Mary B. Brown, Mercy Vaughn, Timothy Gowan, Mary Hasskamp, Ma. Torres
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Anuran site occupancy and species richness as tools for evaluating restoration of a hydrologically-modified landscape Anuran site occupancy and species richness as tools for evaluating restoration of a hydrologically-modified landscape

A fundamental goal of wetland restoration is to reinstate pre-disturbance hydrological conditions to degraded landscapes, facilitating recolonization by native species and the production of resilient, functional ecosystems. To evaluate restoration success, baseline conditions need to be determined and a reference target needs to be established that will serve as an ecological blueprint...
Authors
Susan Walls, J. Waddle, William Barichivich, Ian Bartoszek, Mary E. Brown, J. Hefner, Melinda J. Schuman
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Mycoplasmosis and upper respiratory tract disease of tortoises: a review and update Mycoplasmosis and upper respiratory tract disease of tortoises: a review and update

Tortoise mycoplasmosis is one of the most extensively characterized infectious diseases of chelonians. A 1989 outbreak of upper respiratory tract disease (URTD) in free-ranging Agassiz's desert tortoises (Gopherus agassizii) brought together an investigative team of researchers, diagnosticians, pathologists, immunologists and clinicians from multiple institutions and agencies. Electron...
Authors
Elliott R. Jacobson, Mary B. Brown, Lori Wendland, Daniel Brown, Paul Klein, Mary Christopher, Kristin Berry
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)

Variation in salinity tolerance among larval anurans: implications for community composition and the spread of an invasive, non-native species Variation in salinity tolerance among larval anurans: implications for community composition and the spread of an invasive, non-native species

Amphibians in freshwater coastal wetlands periodically experience acute exposure to salinity from hurricane-related overwash events, as well as chronic exposure associated with rising sea levels. In a comparative experimental approach, we examined whether seven species of anuran amphibians vary in their tolerance to changes in salinity. In a laboratory study, we exposed larval Hyla...
Authors
Mary Brown, Susan C. Walls
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Detection of Mycoplasma agassizii in the Texas Tortoise (Gopherus berlandieri) Detection of Mycoplasma agassizii in the Texas Tortoise (Gopherus berlandieri)

Mycoplasma agassizii causes upper respiratory tract disease (URTD) in Texas tortoises (Gopherus berlandieri). To determine exposure to and shedding of M. agassizii, we collected blood samples and nasal swabs from 40 free-ranging Texas tortoises on public and private lands in Texas, USA, from May to October 2009. We used an enzyme-linked immunosorbent assay (ELISA) to detect M. agassizii...
Authors
Amanda Guthrie, C. White, Mary B. Brown, Thomas deMaar
By
Ecosystems Mission Area, National Wildlife Health Center

Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria

Background: In 2010, Médecins Sans Frontières discovered a lead poisoning outbreak linked to artisanal gold processing in northwestern Nigeria. The outbreak has killed approximately 400 young children and affected thousands more. Objectives: Our aim was to undertake an interdisciplinary geological- and health-science assessment to clarify lead sources and exposure pathways, identify...
Authors
Geoffrey Plumlee, James Durant, Suzette Morman, Antonio Neri, Ruth Wolf, Carrie Dooyema, Philip Hageman, Heather Lowers, Gregory L. Fernette, Gregory Meeker, William Benzel, Rhonda Driscoll, Cyrus Berry, James Crock, Harland L. Goldstein, Monique Adams, Casey Bartrem, Simba Tirima, Behbod Behrooz, Ian von Lindern, Mary Brown
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Denver Microbeam Laboratory

Influence of drought on salamander occupancy of isolated wetlands on the southeastern Coastal Plain of the United States Influence of drought on salamander occupancy of isolated wetlands on the southeastern Coastal Plain of the United States

In the southeastern U.S., changes in temperature and precipitation over the last three decades have been the most dramatic in winter and spring seasons. Continuation of these trends could negatively impact pond-breeding amphibians, especially those that rely on winter and spring rains to fill seasonal wetlands, trigger breeding, and ensure reproductive success. From 2009 to 2012, we...
Authors
Susan C. Walls, William Barichivich, Mary Brown, David E. Scott, Blake Hossack
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate Drought, deluge and declines: the impact of precipitation extremes on amphibians in a changing climate

The Class Amphibia is one of the most severely impacted taxa in an on-going global biodiversity crisis. Because amphibian reproduction is tightly associated with the presence of water, climatic changes that affect water availability pose a particularly menacing threat to both aquatic and terrestrial-breeding amphibians. We explore the impacts that one facet of climate change—that of...
Authors
Susan C. Walls, William Barichivich, Mary Brown
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Salinity tolerance of goldfish, Carassius auratus, a non-native fish in the United States Salinity tolerance of goldfish, Carassius auratus, a non-native fish in the United States

No abstract available.
Authors
Pamela J. Schofield, Mary Brown, Pamela Fuller
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Application of diagnostic tests for mycoplasmal infections of desert and gopher tortoises with management recommendations Application of diagnostic tests for mycoplasmal infections of desert and gopher tortoises with management recommendations

Mycoplasmosis is a transmissible upper respiratory tract disease that has affected plans for management and conservation of wild desert and gopher tortoises in the United States. Although impact of mycoplasmosis on populations of desert and gopher tortoises is unknown, increased prevalence of seropositive animals as well as field observations of clinically ill tortoises have occurred in...
Authors
D.R. Brown, Isabella Schumacher, Grace Mclaughlin, L.D. Wendland, Mary E. Brown, P.A. Klein, E.R. Jacobson
By
Ecosystems Mission Area, National Wildlife Health Center

Mycoplasma agassizii sp., nov., isolated from the upper respiratory tract of the desert tortoise (Gopherus agassizii) and the gopher tortoise (Gopherus polyphemus). Mycoplasma agassizii sp., nov., isolated from the upper respiratory tract of the desert tortoise (Gopherus agassizii) and the gopher tortoise (Gopherus polyphemus).

Biochemical, serological and molecular genetic studies were performed on seven mycoplasma isolates that were recovered from the upper respiratory tract of clinically ill desert tortoises. The isolates were serologically related to each other but serologically distinct from previously described species. Unique mycoplasma species-specific 16S rRNA nucleotide sequences were found in the...
Authors
Mary E. Brown, D.R. Brown, P.A. Kelin, G.S. McLaughlin, Isabella Schumacher, E.R. Jacobson, H.P. Adams, J.G. Tully
By
Ecosystems Mission Area, National Wildlife Health Center

Seroepidemiology of upper respiratory tract disease in the desert tortoise of California Seroepidemiology of upper respiratory tract disease in the desert tortoise of California

Several factors have combined with an upper respiratory tract disease (URTD) to produce declines on some population numbers of desert tortoises (Gopherus agassizii) in the western USA. This study was designed to determine the seroepidemiology of URTD in a population of wild adult tortoises at the Desert Tortoise Research Natural Area (DTNA) study site in Kern County (California, USA)...
Authors
Mary B. Brown, Kristin Berry, Isabella Schumacher, Kenneth Nagy, Mary Christopher, Paul Klein
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)
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