Megan La Peyre, PhD (Former Employee)
Science and Products
Filter Total Items: 97
Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters
Authors
Megan K. La Peyre, Danielle A. Marshall, Shaye E. Sable
Tolerance of northern Gulf of Mexico eastern oysters to chronic warming at extreme salinities Tolerance of northern Gulf of Mexico eastern oysters to chronic warming at extreme salinities
The eastern oyster, Crassostrea virginica, provides critical ecosystem services and supports valuable fishery and aquaculture industries in northern Gulf of Mexico (nGoM) subtropical estuaries where it is grown subtidally. Its upper critical thermal limit is not well defined, especially when combined with extreme salinities. The cumulative mortalities of the progenies of wild C...
Authors
D.A. Marshall, N.C. Coxe, Megan K. La Peyre, W.C. Walton, F. Scott Rikard, J. Beseres Pollack, M.A. Kelly, J.F. La Peyre
Freshwater inflow and responses from estuaries across a climatic gradient: An assessment of northwestern Gulf of Mexico estuaries based on stable isotopes Freshwater inflow and responses from estuaries across a climatic gradient: An assessment of northwestern Gulf of Mexico estuaries based on stable isotopes
Estuaries exist across a large climatic gradient in the northwestern Gulf of Mexico, capturing a range of hydrologic conditions and estuarine functioning. We examined freshwater inflow, salinity, and stable isotope compositions (δ13C, δ15N) of oysters, suspended particulate organic matter (SPOM), and surface sediment organic matter (SSOM) from five estuaries across the hydrologic...
Authors
D. A. Marshall, Megan K. La Peyre, Terrence A. Palmer, Gael Guillou, Blair Sterba-Boatwright, Jennifer Beseres Pollack, B. Lebreton
Ecological engineering with oysters enhances coastal resilience efforts Ecological engineering with oysters enhances coastal resilience efforts
Coastal areas are especially vulnerable to habitat loss, sea-level rise, and other climate change effects. Oyster-dominated eco-engineered reefs have been promoted as integral components of engineered habitats enhancing coastal resilience through provision of numerous ecological, morphological, and socio-economic services. However, the assessed ‘success’ of these eco-engineered oyster...
Authors
M. S. N. Chowdhury, Megan K. La Peyre, L. D. Coen, R. L. Morris, M. W. Luckenbach, T. Ysebaert, B. Walles, A. C. Smaal
Large-scale variation in wave attenuation of oyster reef living shorelines and the influence of inundation duration Large-scale variation in wave attenuation of oyster reef living shorelines and the influence of inundation duration
One of the paramount goals of oyster reef living shorelines is to achieve sustained and adaptive coastal protection, which requires meeting ecological (i.e., develop a self-sustaining oyster population) and engineering (i.e., provide coastal defense) targets. In a large-scale comparison along the Atlantic and Gulf coasts of the United States, the efficacy of various designs of oyster...
Authors
R. L. Morris, Megan K. La Peyre, B. M. Webb, D. A. Marshall, D. M. Bilkovic, J. Cebrian, G. McClenachan, K. M. Kibler, L. J. Walters, D. Bushek, E. L. Sparks, N. A. Temple, J. A. Moody, K. Angstadt, J. Goff, M. K. Boswell, P. E. Sacks, S. E. Swearer
Dynamic Energy Budget modelling to predict eastern oyster growth, reproduction, and mortality under river management and climate change scenarios Dynamic Energy Budget modelling to predict eastern oyster growth, reproduction, and mortality under river management and climate change scenarios
Eastern oysters growing in deltaic Louisiana estuaries in the northern Gulf of Mexico must tolerate considerable salinity variation from natural climate variability (e.g., rainfall and stream run-off pushing isohalines offshore; tropical storms pushing isohalines inshore) and man-made diversions and siphons releasing freshwater from the Mississippi River. These salinity variations are...
Authors
Romain Lavaud, Megan La Peyre, Justic Dubravko, Jerome F. La Peyre
Habitat suitability index model improvement recommendations Habitat suitability index model improvement recommendations
As part of the model improvement effort for the 2023 Coastal Master Plan, the Habitat Suitability Index (HSI) models used during previous master plans were reevaluated to assess how the model relationships could be improved, and to determine what species should be included in the master plan analyses. This process considered the technical reviews, comments, and suggested improvements...
Authors
Shaye E. Sable, David C. Lindquist, Laura D’Acunto, Ann Hijuelos, Megan K. LaPeyre, Ann M. O'Connell, Elizabeth M. Robinson
Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions
Self-organization is a process of establishing and reinforcing local structures through feedbacks between internal population dynamics and external factors. In reef-building systems, substrate is collectively engineered by individuals that also occupy it and compete for space. Reefs are constrained spatially by the physical environment, and by mortality, which reduces production but...
Authors
Simeon Yurek, Mitchell J. Eaton, Romain Lavaud, R. Wilson Laney, Don DeAngelis, William E. Pine, Megan K. LaPeyre, Julien Martin, Peter C Frederick, Hongqing Wang, Michael R. Lowe, Fred Johnson, Edward V. Camp, Rua Mordecai
Effects of inundation duration on southeastern Louisiana oyster reefs Effects of inundation duration on southeastern Louisiana oyster reefs
Understanding the effects of predicted rising sea levels, combined with changes in precipitation and freshwater inflow on key estuarine ecosystem engineers such as the eastern oyster would provide critical information to inform restoration design and predictive models. Using oyster ladders with shell bags placed at three heights to capture a range of inundation levels, oyster growth of...
Authors
Danielle A. Marshall, Megan La Peyre
Living on the edge: Multi-scale analyses of bird habitat use in coastal marshes of Barataria Basin, Louisiana, USA Living on the edge: Multi-scale analyses of bird habitat use in coastal marshes of Barataria Basin, Louisiana, USA
Coastal marsh loss, combined with expected sea-level rise, will cause inundation and extensive shifts to vegetation and salinity regimes that may affect the bird species dependent on coastal ecosystems worldwide. Within coastal marsh habitats, birds provide key targets for coastal management goals. However, limited information on bird-habitat relationships within coastal marshes inhibits...
Authors
Brett Patton, J. A. Nyman, Megan K. La Peyre
Using reproductive potential to assess oyster population sustainability Using reproductive potential to assess oyster population sustainability
Ensuring that oysters remain sustainable in the face of significant coastal restoration activities, high local subsidence rates, and predicted sea-level rise requires a deeper understanding of basic population demographics, including reproductive potential. We quantified fecundity (eggs ind−1) of oysters at high- and low-salinity sites during a fall and spring spawn season. We assessed...
Authors
Danielle A. Marshall, Samuel C. Moore, Malinda Sutor, Jerome F. La Peyre, Megan La Peyre
Gear comparison study for sampling nekton in Barataria Basin marshes Gear comparison study for sampling nekton in Barataria Basin marshes
This project was funded by the Louisiana Trustee Implementation Group (LA TIG) to support decisions related to investments in long-term monitoring. The LA TIG seeks to ensure long-term monitoring informs coastal restoration activities with the goal of sustaining and improving fisheries impacted by the Deepwater Horizon (DWH) Oil Spill. The project objective was to compare nekton catch...
Authors
Caleb Taylor, Megan K. La Peyre, Shaye Sable, Erin P. Kiskaddon, Melissa M. Baustian
Science and Products
Filter Total Items: 97
Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters Oyster model inventory: Identifying critical data and modeling approaches to support restoration of oyster reefs in coastal U.S. Gulf of Mexico waters
Authors
Megan K. La Peyre, Danielle A. Marshall, Shaye E. Sable
Tolerance of northern Gulf of Mexico eastern oysters to chronic warming at extreme salinities Tolerance of northern Gulf of Mexico eastern oysters to chronic warming at extreme salinities
The eastern oyster, Crassostrea virginica, provides critical ecosystem services and supports valuable fishery and aquaculture industries in northern Gulf of Mexico (nGoM) subtropical estuaries where it is grown subtidally. Its upper critical thermal limit is not well defined, especially when combined with extreme salinities. The cumulative mortalities of the progenies of wild C...
Authors
D.A. Marshall, N.C. Coxe, Megan K. La Peyre, W.C. Walton, F. Scott Rikard, J. Beseres Pollack, M.A. Kelly, J.F. La Peyre
Freshwater inflow and responses from estuaries across a climatic gradient: An assessment of northwestern Gulf of Mexico estuaries based on stable isotopes Freshwater inflow and responses from estuaries across a climatic gradient: An assessment of northwestern Gulf of Mexico estuaries based on stable isotopes
Estuaries exist across a large climatic gradient in the northwestern Gulf of Mexico, capturing a range of hydrologic conditions and estuarine functioning. We examined freshwater inflow, salinity, and stable isotope compositions (δ13C, δ15N) of oysters, suspended particulate organic matter (SPOM), and surface sediment organic matter (SSOM) from five estuaries across the hydrologic...
Authors
D. A. Marshall, Megan K. La Peyre, Terrence A. Palmer, Gael Guillou, Blair Sterba-Boatwright, Jennifer Beseres Pollack, B. Lebreton
Ecological engineering with oysters enhances coastal resilience efforts Ecological engineering with oysters enhances coastal resilience efforts
Coastal areas are especially vulnerable to habitat loss, sea-level rise, and other climate change effects. Oyster-dominated eco-engineered reefs have been promoted as integral components of engineered habitats enhancing coastal resilience through provision of numerous ecological, morphological, and socio-economic services. However, the assessed ‘success’ of these eco-engineered oyster...
Authors
M. S. N. Chowdhury, Megan K. La Peyre, L. D. Coen, R. L. Morris, M. W. Luckenbach, T. Ysebaert, B. Walles, A. C. Smaal
Large-scale variation in wave attenuation of oyster reef living shorelines and the influence of inundation duration Large-scale variation in wave attenuation of oyster reef living shorelines and the influence of inundation duration
One of the paramount goals of oyster reef living shorelines is to achieve sustained and adaptive coastal protection, which requires meeting ecological (i.e., develop a self-sustaining oyster population) and engineering (i.e., provide coastal defense) targets. In a large-scale comparison along the Atlantic and Gulf coasts of the United States, the efficacy of various designs of oyster...
Authors
R. L. Morris, Megan K. La Peyre, B. M. Webb, D. A. Marshall, D. M. Bilkovic, J. Cebrian, G. McClenachan, K. M. Kibler, L. J. Walters, D. Bushek, E. L. Sparks, N. A. Temple, J. A. Moody, K. Angstadt, J. Goff, M. K. Boswell, P. E. Sacks, S. E. Swearer
Dynamic Energy Budget modelling to predict eastern oyster growth, reproduction, and mortality under river management and climate change scenarios Dynamic Energy Budget modelling to predict eastern oyster growth, reproduction, and mortality under river management and climate change scenarios
Eastern oysters growing in deltaic Louisiana estuaries in the northern Gulf of Mexico must tolerate considerable salinity variation from natural climate variability (e.g., rainfall and stream run-off pushing isohalines offshore; tropical storms pushing isohalines inshore) and man-made diversions and siphons releasing freshwater from the Mississippi River. These salinity variations are...
Authors
Romain Lavaud, Megan La Peyre, Justic Dubravko, Jerome F. La Peyre
Habitat suitability index model improvement recommendations Habitat suitability index model improvement recommendations
As part of the model improvement effort for the 2023 Coastal Master Plan, the Habitat Suitability Index (HSI) models used during previous master plans were reevaluated to assess how the model relationships could be improved, and to determine what species should be included in the master plan analyses. This process considered the technical reviews, comments, and suggested improvements...
Authors
Shaye E. Sable, David C. Lindquist, Laura D’Acunto, Ann Hijuelos, Megan K. LaPeyre, Ann M. O'Connell, Elizabeth M. Robinson
Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions
Self-organization is a process of establishing and reinforcing local structures through feedbacks between internal population dynamics and external factors. In reef-building systems, substrate is collectively engineered by individuals that also occupy it and compete for space. Reefs are constrained spatially by the physical environment, and by mortality, which reduces production but...
Authors
Simeon Yurek, Mitchell J. Eaton, Romain Lavaud, R. Wilson Laney, Don DeAngelis, William E. Pine, Megan K. LaPeyre, Julien Martin, Peter C Frederick, Hongqing Wang, Michael R. Lowe, Fred Johnson, Edward V. Camp, Rua Mordecai
Effects of inundation duration on southeastern Louisiana oyster reefs Effects of inundation duration on southeastern Louisiana oyster reefs
Understanding the effects of predicted rising sea levels, combined with changes in precipitation and freshwater inflow on key estuarine ecosystem engineers such as the eastern oyster would provide critical information to inform restoration design and predictive models. Using oyster ladders with shell bags placed at three heights to capture a range of inundation levels, oyster growth of...
Authors
Danielle A. Marshall, Megan La Peyre
Living on the edge: Multi-scale analyses of bird habitat use in coastal marshes of Barataria Basin, Louisiana, USA Living on the edge: Multi-scale analyses of bird habitat use in coastal marshes of Barataria Basin, Louisiana, USA
Coastal marsh loss, combined with expected sea-level rise, will cause inundation and extensive shifts to vegetation and salinity regimes that may affect the bird species dependent on coastal ecosystems worldwide. Within coastal marsh habitats, birds provide key targets for coastal management goals. However, limited information on bird-habitat relationships within coastal marshes inhibits...
Authors
Brett Patton, J. A. Nyman, Megan K. La Peyre
Using reproductive potential to assess oyster population sustainability Using reproductive potential to assess oyster population sustainability
Ensuring that oysters remain sustainable in the face of significant coastal restoration activities, high local subsidence rates, and predicted sea-level rise requires a deeper understanding of basic population demographics, including reproductive potential. We quantified fecundity (eggs ind−1) of oysters at high- and low-salinity sites during a fall and spring spawn season. We assessed...
Authors
Danielle A. Marshall, Samuel C. Moore, Malinda Sutor, Jerome F. La Peyre, Megan La Peyre
Gear comparison study for sampling nekton in Barataria Basin marshes Gear comparison study for sampling nekton in Barataria Basin marshes
This project was funded by the Louisiana Trustee Implementation Group (LA TIG) to support decisions related to investments in long-term monitoring. The LA TIG seeks to ensure long-term monitoring informs coastal restoration activities with the goal of sustaining and improving fisheries impacted by the Deepwater Horizon (DWH) Oil Spill. The project objective was to compare nekton catch...
Authors
Caleb Taylor, Megan K. La Peyre, Shaye Sable, Erin P. Kiskaddon, Melissa M. Baustian