Megan La Peyre, PhD (Former Employee)
Science and Products
Filter Total Items: 94
Differences in extreme low salinity timing and duration differentially affect eastern oyster (Crassostrea virginica) size class growth and mortality in Breton Sound, LA Differences in extreme low salinity timing and duration differentially affect eastern oyster (Crassostrea virginica) size class growth and mortality in Breton Sound, LA
Understanding how different life history stages are impacted by extreme or stochastic environmental variation is critical for predicting and modeling organism population dynamics. This project examined recruitment, growth, and mortality of seed (25–75 mm) and market (>75 mm) sized oysters along a salinity gradient over two years in Breton Sound, LA. In April 2010, management responses to...
Authors
Megan K. LaPeyre, Benjamin S. Eberline, Thomas M. Soniat, Jerome F. La Peyre
Baseline data for evaluating development trajectory and provision of ecosystem services of created fringing oyster reefs in Vermilion Bay, Louisiana Baseline data for evaluating development trajectory and provision of ecosystem services of created fringing oyster reefs in Vermilion Bay, Louisiana
Understanding the time frame in which ecosystem services (that is, water quality maintenance, shoreline protection, habitat provision) are expected to be provided is important when restoration projects are being designed and implemented. Restoration of three-dimensional shell habitats in coastal Louisiana and elsewhere presents a valuable and potentially self-sustaining approach to...
Authors
Megan La Peyre, Lindsay Schwarting, Shea Miller
Preliminary assessment of bioengineered fringing shoreline reefs in Grand Isle and Breton Sound, Louisiana Preliminary assessment of bioengineered fringing shoreline reefs in Grand Isle and Breton Sound, Louisiana
Restoration of three-dimensional shell habitats in coastal Louisiana presents a valuable and potentially self-sustaining approach to providing shoreline protection and critical nekton habitat and may contribute to water quality maintenance. The use of what has been called “living shorelines” is particularly promising because in addition to the hypothesized shoreline protection services...
Authors
Megan La Peyre, Lindsay Schwarting, Shea Miller
Oyster reef restoration in the Northern Gulf of Mexico: effect of artificial substrate and sge on nekton and benthic macroinvertebrate assemblage use Oyster reef restoration in the Northern Gulf of Mexico: effect of artificial substrate and sge on nekton and benthic macroinvertebrate assemblage use
In the northern Gulf of Mexico (GOM), reefs built by eastern oysters, Crassostrea virginica, provide critical habitat within shallow estuaries, and recent efforts have focused on restoring reefs to benefit nekton and benthic macroinvertebrates. We compared nekton and benthic macroinvertebrate assemblages at historic, newly created (6years) shell and rock substrate reefs. Using crab traps...
Authors
Laura A. Brown, Jessica N. Furlong, Kenneth M. Brown, Megan K. LaPeyre
Gauging state-level and user group views of oyster reef restoration activities in the northern Gulf of Mexico Gauging state-level and user group views of oyster reef restoration activities in the northern Gulf of Mexico
Successful oyster reef restoration, like many conservation challenges, requires not only biological understanding of the resource, but also stakeholder cooperation and political support. To measure perceptions of oyster reef restoration activities and priorities for future restoration along the northern Gulf of Mexico coast, a survey of 1500 individuals representing 4 user groups (oyster
Authors
Megan K. LaPeyre, Ashby Nix, Luke Laborde, Bryan P. Piazza
A shell-neutral modeling approach yields sustainable oyster harvest estimates: a retrospective analysis of the Louisiana state primary seed grounds A shell-neutral modeling approach yields sustainable oyster harvest estimates: a retrospective analysis of the Louisiana state primary seed grounds
A numerical model is presented that defines a sustainability criterion as no net loss of shell, and calculates a sustainable harvest of seed (
Authors
Thomas M. Soniat, John M. Klinck, Eric N. Powell, Nathan W. Cooper, Abdelguerfi, Eileen E. Hofmann, Janak Dahal, Shengru Tu, John Finigan, Benjamin S. Eberline, Jerome F. La Peyre, Megan K. LaPeyre, Fareed Qaddoura
Nekton density patterns and hurricane recovery in submerged aquatic vegetation, and along non-vegetated natural and created edge habitats Nekton density patterns and hurricane recovery in submerged aquatic vegetation, and along non-vegetated natural and created edge habitats
We compared nekton habitat value of submerged aquatic vegetation, flooded non-vegetated natural and man-made edge habitats in mesohaline interior marsh areas in southwest Louisiana using a 1-m2 throw trap and 3-mm bag seine. When present, SAV habitats supported close to 4 times greater densities and higher species richness of nekton as compared to either natural or man-made edge habitats...
Authors
Megan La Peyre, J. Gordon
Testing the effect of habitat structure and complexity on nekton assemblages using experimental oyster reefs Testing the effect of habitat structure and complexity on nekton assemblages using experimental oyster reefs
Structurally complex habitats are often associated with more diverse and abundant species assemblages in both aquatic and terrestrial ecosystems. Biogenic reefs formed by the eastern oyster (Crassostrea virginica) are complex in nature and are recognized for their potential habitat value in estuarine systems along the US Atlantic and Gulf of Mexico coasts. Few studies, however, have...
Authors
Austin T. Humphries, Megan K. LaPeyre, Matthew E. Kimball, Lawrence P. Rozas
The effect of structural complexity, prey density, and "predator-free space" on prey survivorship at created oyster reef mesocosms The effect of structural complexity, prey density, and "predator-free space" on prey survivorship at created oyster reef mesocosms
Interactions between predators and their prey are influenced by the habitat they occupy. Using created oyster (Crassostrea virginica) reef mesocosms, we conducted a series of laboratory experiments that created structure and manipulated complexity as well as prey density and “predator-free space” to examine the relationship between structural complexity and prey survivorship...
Authors
Austin T. Humphries, Megan La Peyre, Gary A. Decossas
Nekton community response to a large-scale Mississippi River discharge: Examining spatial and temporal response to river management Nekton community response to a large-scale Mississippi River discharge: Examining spatial and temporal response to river management
Freshwater flow is generally held to be one of the most influential factors affecting community structure and production in estuaries. In coastal Louisiana, the Caernarvon Freshwater Diversion (CFD) is managed to control freshwater discharge from the Mississippi River into Breton Sound basin. Operational since 1991, CFD has undergone several changes in management strategy including...
Authors
Bryan P. Piazza, Megan La Peyre
Relating large-scale climate variability to local species abundance: ENSO forcing and shrimp in Breton Sound, Louisiana, USA Relating large-scale climate variability to local species abundance: ENSO forcing and shrimp in Breton Sound, Louisiana, USA
Climate creates environmental constraints (filters) that affect the abundance and distribution of species. In estuaries, these constraints often result from variability in water flow properties and environmental conditions (i.e. water flow, salinity, water temperature) and can have significant effects on the abundance and distribution of commercially important nekton species. We...
Authors
Bryan P. Piazza, Megan K. LaPeyre, B.D. Keim
The combined influence of sub-optimal temperature and salinity on the in vitro viability of Perkinsus marinus, a protistan parasite of the eastern oyster Crassostrea virginica The combined influence of sub-optimal temperature and salinity on the in vitro viability of Perkinsus marinus, a protistan parasite of the eastern oyster Crassostrea virginica
Perkinsus marinus is a major cause of mortality in eastern oysters along the Gulf of Mexico and Atlantic coasts. It is also well documented that temperature and salinity are the primary environmental factors affecting P. marinus viability and proliferation. However, little is known about the effects of combined sub-optimal temperatures and salinities on P. marinus viability. This in...
Authors
M.K. La Peyre, S.M. Casas, W. Gayle, Jerome F. La Peyre
Science and Products
Filter Total Items: 94
Differences in extreme low salinity timing and duration differentially affect eastern oyster (Crassostrea virginica) size class growth and mortality in Breton Sound, LA Differences in extreme low salinity timing and duration differentially affect eastern oyster (Crassostrea virginica) size class growth and mortality in Breton Sound, LA
Understanding how different life history stages are impacted by extreme or stochastic environmental variation is critical for predicting and modeling organism population dynamics. This project examined recruitment, growth, and mortality of seed (25–75 mm) and market (>75 mm) sized oysters along a salinity gradient over two years in Breton Sound, LA. In April 2010, management responses to...
Authors
Megan K. LaPeyre, Benjamin S. Eberline, Thomas M. Soniat, Jerome F. La Peyre
Baseline data for evaluating development trajectory and provision of ecosystem services of created fringing oyster reefs in Vermilion Bay, Louisiana Baseline data for evaluating development trajectory and provision of ecosystem services of created fringing oyster reefs in Vermilion Bay, Louisiana
Understanding the time frame in which ecosystem services (that is, water quality maintenance, shoreline protection, habitat provision) are expected to be provided is important when restoration projects are being designed and implemented. Restoration of three-dimensional shell habitats in coastal Louisiana and elsewhere presents a valuable and potentially self-sustaining approach to...
Authors
Megan La Peyre, Lindsay Schwarting, Shea Miller
Preliminary assessment of bioengineered fringing shoreline reefs in Grand Isle and Breton Sound, Louisiana Preliminary assessment of bioengineered fringing shoreline reefs in Grand Isle and Breton Sound, Louisiana
Restoration of three-dimensional shell habitats in coastal Louisiana presents a valuable and potentially self-sustaining approach to providing shoreline protection and critical nekton habitat and may contribute to water quality maintenance. The use of what has been called “living shorelines” is particularly promising because in addition to the hypothesized shoreline protection services...
Authors
Megan La Peyre, Lindsay Schwarting, Shea Miller
Oyster reef restoration in the Northern Gulf of Mexico: effect of artificial substrate and sge on nekton and benthic macroinvertebrate assemblage use Oyster reef restoration in the Northern Gulf of Mexico: effect of artificial substrate and sge on nekton and benthic macroinvertebrate assemblage use
In the northern Gulf of Mexico (GOM), reefs built by eastern oysters, Crassostrea virginica, provide critical habitat within shallow estuaries, and recent efforts have focused on restoring reefs to benefit nekton and benthic macroinvertebrates. We compared nekton and benthic macroinvertebrate assemblages at historic, newly created (6years) shell and rock substrate reefs. Using crab traps...
Authors
Laura A. Brown, Jessica N. Furlong, Kenneth M. Brown, Megan K. LaPeyre
Gauging state-level and user group views of oyster reef restoration activities in the northern Gulf of Mexico Gauging state-level and user group views of oyster reef restoration activities in the northern Gulf of Mexico
Successful oyster reef restoration, like many conservation challenges, requires not only biological understanding of the resource, but also stakeholder cooperation and political support. To measure perceptions of oyster reef restoration activities and priorities for future restoration along the northern Gulf of Mexico coast, a survey of 1500 individuals representing 4 user groups (oyster
Authors
Megan K. LaPeyre, Ashby Nix, Luke Laborde, Bryan P. Piazza
A shell-neutral modeling approach yields sustainable oyster harvest estimates: a retrospective analysis of the Louisiana state primary seed grounds A shell-neutral modeling approach yields sustainable oyster harvest estimates: a retrospective analysis of the Louisiana state primary seed grounds
A numerical model is presented that defines a sustainability criterion as no net loss of shell, and calculates a sustainable harvest of seed (
Authors
Thomas M. Soniat, John M. Klinck, Eric N. Powell, Nathan W. Cooper, Abdelguerfi, Eileen E. Hofmann, Janak Dahal, Shengru Tu, John Finigan, Benjamin S. Eberline, Jerome F. La Peyre, Megan K. LaPeyre, Fareed Qaddoura
Nekton density patterns and hurricane recovery in submerged aquatic vegetation, and along non-vegetated natural and created edge habitats Nekton density patterns and hurricane recovery in submerged aquatic vegetation, and along non-vegetated natural and created edge habitats
We compared nekton habitat value of submerged aquatic vegetation, flooded non-vegetated natural and man-made edge habitats in mesohaline interior marsh areas in southwest Louisiana using a 1-m2 throw trap and 3-mm bag seine. When present, SAV habitats supported close to 4 times greater densities and higher species richness of nekton as compared to either natural or man-made edge habitats...
Authors
Megan La Peyre, J. Gordon
Testing the effect of habitat structure and complexity on nekton assemblages using experimental oyster reefs Testing the effect of habitat structure and complexity on nekton assemblages using experimental oyster reefs
Structurally complex habitats are often associated with more diverse and abundant species assemblages in both aquatic and terrestrial ecosystems. Biogenic reefs formed by the eastern oyster (Crassostrea virginica) are complex in nature and are recognized for their potential habitat value in estuarine systems along the US Atlantic and Gulf of Mexico coasts. Few studies, however, have...
Authors
Austin T. Humphries, Megan K. LaPeyre, Matthew E. Kimball, Lawrence P. Rozas
The effect of structural complexity, prey density, and "predator-free space" on prey survivorship at created oyster reef mesocosms The effect of structural complexity, prey density, and "predator-free space" on prey survivorship at created oyster reef mesocosms
Interactions between predators and their prey are influenced by the habitat they occupy. Using created oyster (Crassostrea virginica) reef mesocosms, we conducted a series of laboratory experiments that created structure and manipulated complexity as well as prey density and “predator-free space” to examine the relationship between structural complexity and prey survivorship...
Authors
Austin T. Humphries, Megan La Peyre, Gary A. Decossas
Nekton community response to a large-scale Mississippi River discharge: Examining spatial and temporal response to river management Nekton community response to a large-scale Mississippi River discharge: Examining spatial and temporal response to river management
Freshwater flow is generally held to be one of the most influential factors affecting community structure and production in estuaries. In coastal Louisiana, the Caernarvon Freshwater Diversion (CFD) is managed to control freshwater discharge from the Mississippi River into Breton Sound basin. Operational since 1991, CFD has undergone several changes in management strategy including...
Authors
Bryan P. Piazza, Megan La Peyre
Relating large-scale climate variability to local species abundance: ENSO forcing and shrimp in Breton Sound, Louisiana, USA Relating large-scale climate variability to local species abundance: ENSO forcing and shrimp in Breton Sound, Louisiana, USA
Climate creates environmental constraints (filters) that affect the abundance and distribution of species. In estuaries, these constraints often result from variability in water flow properties and environmental conditions (i.e. water flow, salinity, water temperature) and can have significant effects on the abundance and distribution of commercially important nekton species. We...
Authors
Bryan P. Piazza, Megan K. LaPeyre, B.D. Keim
The combined influence of sub-optimal temperature and salinity on the in vitro viability of Perkinsus marinus, a protistan parasite of the eastern oyster Crassostrea virginica The combined influence of sub-optimal temperature and salinity on the in vitro viability of Perkinsus marinus, a protistan parasite of the eastern oyster Crassostrea virginica
Perkinsus marinus is a major cause of mortality in eastern oysters along the Gulf of Mexico and Atlantic coasts. It is also well documented that temperature and salinity are the primary environmental factors affecting P. marinus viability and proliferation. However, little is known about the effects of combined sub-optimal temperatures and salinities on P. marinus viability. This in...
Authors
M.K. La Peyre, S.M. Casas, W. Gayle, Jerome F. La Peyre