Megan La Peyre, PhD (Former Employee)
Science and Products
Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015) Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015)
This dataset provides bi-monthly data on seed biomass collected in shallow water habitats across the fresh to saline gradient at coastal sites in Barataria Bay, Louisiana.
Seed biomass from shallow coastal water areas from Texas through Alabama, 2013-2015 Seed biomass from shallow coastal water areas from Texas through Alabama, 2013-2015
This projects primary goal was to provide data on biomass of potential seed resources located within shallow water coastal areas within fresh to saline coastal waters of the northern Gulf of Mexico. The data set provides biomass of seeds, by species or lowest practical taxon from 2013, 2014 and 2015 across 384 randomly selected sites located in shallow water coastal areas. The data were...
Sediment carbon, submerged aquatic vegetation and environmental variables in deltaic southeast Louisiana (2015-2016) Sediment carbon, submerged aquatic vegetation and environmental variables in deltaic southeast Louisiana (2015-2016)
These present data on sediment carbon from soil cores taken from within submerged aquatic vegetation beds from fresh to saline coastal locations in southeast Louisiana. Water quality, site location, vegetation biomass and species composition are recorded.
Data for Gulf Coast Vulnerability Assessment Data for Gulf Coast Vulnerability Assessment
This USGS Data Release represents geospatial and tabular data for the Gulf Coast Vulnerability Assessment Project. The data release was produced in compliance with the new 'open data' requirements as way to make the scientific products associated with USGS research efforts and publications available to the public. The dataset consists of 2 separate items: 1. Vulnerability assessment data...
Submerged aquatic vegetation and environmental data for coastal areas from Texas through Alabama, 2013-2015 Submerged aquatic vegetation and environmental data for coastal areas from Texas through Alabama, 2013-2015
This projects primary goal was to provide data on occurrence and abundance of SAV resources within the fresh to saline coastal waters of the northern Gulf of Mexico, and to relate these findings to key environmental variables. The data set provides the collected data from 2013, 2014 and 2015 on site location, discrete water quality, aquatic vegetation cover and biomass by species. The...
Filter Total Items: 94
In-situ valve opening response of eastern oysters to estuarine conditions In-situ valve opening response of eastern oysters to estuarine conditions
High-frequency recordings of valve opening behavior (VOB) in bivalves are often used to detect changes in environmental conditions. However, generally a single variable such as temperature or the presence of toxicants in the water is the focus. A description of routine VOB under non-stressful conditions is also important for interpreting responses to environmental changes. Here we...
Authors
Romain Lavaud, Stephanie K. Archer, Megan K. La Peyre, Finella M. Campanino, Sandra M. Casas, Jerome F. La Peyre
Rates of osmoconformation in triploid eastern oysters, and comparison to their diploid half-siblings Rates of osmoconformation in triploid eastern oysters, and comparison to their diploid half-siblings
Triploid eastern oysters (Crassostrea virginica) suffer greater mortalities than diploids in the U.S. Gulf of Mexico estuaries when extreme low salinities ( 5) and elevated temperatures (≥ 28 °C) coincide. To investigate potential causes, changes in plasma osmolality, hemolymph pH, valve opening and mortality in diploid and triploid oyster half-siblings were compared during a step-down...
Authors
Sandra M. Casas, Devin Comba, Megan K. La Peyre, Scott Rikard, Jerome F. La Peyre
Hypoxia and anoxia tolerance in diploid and triploid eastern oysters at high temperature Hypoxia and anoxia tolerance in diploid and triploid eastern oysters at high temperature
Increasing reliance on the use of triploid oysters to support aquaculture production relies on their generally superior growth rate and meat quality over that of diploid oysters. Reports of elevated triploid mortality have generated questions about potential trade-offs between growth and tolerance to environmental stressors. These questions are particularly relevant as climate change...
Authors
Nicholas Coxe, Genesis Mize, Sandra M. Casas, Megan K. La Peyre, Romain Lavaud, Brian Callam, Scott Rikard, Jerome F. La Peyre
DNA virome composition of two sympatric wild felids, bobcat (Lynx rufus) and puma (Puma concolor) in Sonora, Mexico DNA virome composition of two sympatric wild felids, bobcat (Lynx rufus) and puma (Puma concolor) in Sonora, Mexico
With viruses often having devastating effects on wildlife population fitness and wild mammals serving as pathogen reservoirs for potentially zoonotic diseases, determining the viral diversity present in wild mammals is both a conservation and One Health priority. Additionally, transmission from more abundant hosts could increase the extinction risk of threatened sympatric species. We...
Authors
Natalie Payne, Leigh Combrink, Simona Kraberger, Rafaela S. Fontenele, Kara Schmidlin, Ivonne Cassaigne, Megan K. La Peyre, Arvind Varsani, Koenraad Van Doorslaer
Differential hypoxia tolerance of eastern oysters from the northern Gulf of Mexico at elevated temperature Differential hypoxia tolerance of eastern oysters from the northern Gulf of Mexico at elevated temperature
Increasing prevalence of hypoxia in shallow waters of U.S. Gulf of Mexico (GoM) estuaries can pose a serious threat to eastern oysters (Crassostrea virginica). Their tolerance to hypoxia, however, is not well characterized, especially at elevated temperatures (>30 °C) typical of GoM estuaries in summer. Moreover, it is unknown whether differences in hypoxia tolerance exist between GoM...
Authors
Nicholas Coxe, Sandra M. Casas, Danielle A. Marshall, Megan K. La Peyre, Morgan W. Kelly, Jerome F. La Peyre
Are we falling short on restoring oysters at a regional scale? Are we falling short on restoring oysters at a regional scale?
Across coastal areas of the northern Gulf of Mexico, the Deepwater Horizon oil spill resulted in significant ecological injury, and over 8 billion USD directed to restoration activities. Oyster restoration projects were implemented with regional goals of restoring oyster abundance, spawning stock, and population resilience. Measuring regional or large-scale ecosystem restoration outcomes
Authors
Megan K. La Peyre, Danielle Aguilar Marshall, Sarah Catherine Leblanc Buie, Ann Hijuelos, Gregory Steyer
Science and Products
Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015) Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015)
This dataset provides bi-monthly data on seed biomass collected in shallow water habitats across the fresh to saline gradient at coastal sites in Barataria Bay, Louisiana.
Seed biomass from shallow coastal water areas from Texas through Alabama, 2013-2015 Seed biomass from shallow coastal water areas from Texas through Alabama, 2013-2015
This projects primary goal was to provide data on biomass of potential seed resources located within shallow water coastal areas within fresh to saline coastal waters of the northern Gulf of Mexico. The data set provides biomass of seeds, by species or lowest practical taxon from 2013, 2014 and 2015 across 384 randomly selected sites located in shallow water coastal areas. The data were...
Sediment carbon, submerged aquatic vegetation and environmental variables in deltaic southeast Louisiana (2015-2016) Sediment carbon, submerged aquatic vegetation and environmental variables in deltaic southeast Louisiana (2015-2016)
These present data on sediment carbon from soil cores taken from within submerged aquatic vegetation beds from fresh to saline coastal locations in southeast Louisiana. Water quality, site location, vegetation biomass and species composition are recorded.
Data for Gulf Coast Vulnerability Assessment Data for Gulf Coast Vulnerability Assessment
This USGS Data Release represents geospatial and tabular data for the Gulf Coast Vulnerability Assessment Project. The data release was produced in compliance with the new 'open data' requirements as way to make the scientific products associated with USGS research efforts and publications available to the public. The dataset consists of 2 separate items: 1. Vulnerability assessment data...
Submerged aquatic vegetation and environmental data for coastal areas from Texas through Alabama, 2013-2015 Submerged aquatic vegetation and environmental data for coastal areas from Texas through Alabama, 2013-2015
This projects primary goal was to provide data on occurrence and abundance of SAV resources within the fresh to saline coastal waters of the northern Gulf of Mexico, and to relate these findings to key environmental variables. The data set provides the collected data from 2013, 2014 and 2015 on site location, discrete water quality, aquatic vegetation cover and biomass by species. The...
Filter Total Items: 94
In-situ valve opening response of eastern oysters to estuarine conditions In-situ valve opening response of eastern oysters to estuarine conditions
High-frequency recordings of valve opening behavior (VOB) in bivalves are often used to detect changes in environmental conditions. However, generally a single variable such as temperature or the presence of toxicants in the water is the focus. A description of routine VOB under non-stressful conditions is also important for interpreting responses to environmental changes. Here we...
Authors
Romain Lavaud, Stephanie K. Archer, Megan K. La Peyre, Finella M. Campanino, Sandra M. Casas, Jerome F. La Peyre
Rates of osmoconformation in triploid eastern oysters, and comparison to their diploid half-siblings Rates of osmoconformation in triploid eastern oysters, and comparison to their diploid half-siblings
Triploid eastern oysters (Crassostrea virginica) suffer greater mortalities than diploids in the U.S. Gulf of Mexico estuaries when extreme low salinities ( 5) and elevated temperatures (≥ 28 °C) coincide. To investigate potential causes, changes in plasma osmolality, hemolymph pH, valve opening and mortality in diploid and triploid oyster half-siblings were compared during a step-down...
Authors
Sandra M. Casas, Devin Comba, Megan K. La Peyre, Scott Rikard, Jerome F. La Peyre
Hypoxia and anoxia tolerance in diploid and triploid eastern oysters at high temperature Hypoxia and anoxia tolerance in diploid and triploid eastern oysters at high temperature
Increasing reliance on the use of triploid oysters to support aquaculture production relies on their generally superior growth rate and meat quality over that of diploid oysters. Reports of elevated triploid mortality have generated questions about potential trade-offs between growth and tolerance to environmental stressors. These questions are particularly relevant as climate change...
Authors
Nicholas Coxe, Genesis Mize, Sandra M. Casas, Megan K. La Peyre, Romain Lavaud, Brian Callam, Scott Rikard, Jerome F. La Peyre
DNA virome composition of two sympatric wild felids, bobcat (Lynx rufus) and puma (Puma concolor) in Sonora, Mexico DNA virome composition of two sympatric wild felids, bobcat (Lynx rufus) and puma (Puma concolor) in Sonora, Mexico
With viruses often having devastating effects on wildlife population fitness and wild mammals serving as pathogen reservoirs for potentially zoonotic diseases, determining the viral diversity present in wild mammals is both a conservation and One Health priority. Additionally, transmission from more abundant hosts could increase the extinction risk of threatened sympatric species. We...
Authors
Natalie Payne, Leigh Combrink, Simona Kraberger, Rafaela S. Fontenele, Kara Schmidlin, Ivonne Cassaigne, Megan K. La Peyre, Arvind Varsani, Koenraad Van Doorslaer
Differential hypoxia tolerance of eastern oysters from the northern Gulf of Mexico at elevated temperature Differential hypoxia tolerance of eastern oysters from the northern Gulf of Mexico at elevated temperature
Increasing prevalence of hypoxia in shallow waters of U.S. Gulf of Mexico (GoM) estuaries can pose a serious threat to eastern oysters (Crassostrea virginica). Their tolerance to hypoxia, however, is not well characterized, especially at elevated temperatures (>30 °C) typical of GoM estuaries in summer. Moreover, it is unknown whether differences in hypoxia tolerance exist between GoM...
Authors
Nicholas Coxe, Sandra M. Casas, Danielle A. Marshall, Megan K. La Peyre, Morgan W. Kelly, Jerome F. La Peyre
Are we falling short on restoring oysters at a regional scale? Are we falling short on restoring oysters at a regional scale?
Across coastal areas of the northern Gulf of Mexico, the Deepwater Horizon oil spill resulted in significant ecological injury, and over 8 billion USD directed to restoration activities. Oyster restoration projects were implemented with regional goals of restoring oyster abundance, spawning stock, and population resilience. Measuring regional or large-scale ecosystem restoration outcomes
Authors
Megan K. La Peyre, Danielle Aguilar Marshall, Sarah Catherine Leblanc Buie, Ann Hijuelos, Gregory Steyer