Megan La Peyre, PhD (Former Employee)
Science and Products
Filter Total Items: 94
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
Understanding nekton use of estuarine habitats in the northern Gulf of Mexico: Guidebook for natural resource managers and restoration practitioners Understanding nekton use of estuarine habitats in the northern Gulf of Mexico: Guidebook for natural resource managers and restoration practitioners
Without a comprehensive understanding of nekton use of key habitats across locations, natural resource managers and restoration practitioners in the northern Gulf of Mexico region lack a key tool to assist in their efforts to design, implement, and monitor effective coastal restoration and protection efforts in the decades to come. To address this need, Abt helped conduct a systematic...
Authors
T. A. Hollweg, M. C. Christman, K. Sauby, J. Cebrian, Megan La Peyre
Estuarine submerged aquatic vegetation habitat provides organic carbon storage across a shifting landscape Estuarine submerged aquatic vegetation habitat provides organic carbon storage across a shifting landscape
Submerged aquatic vegetation (SAV) thrives across the estuarine salinity gradient providing valuable ecosystem services. Within the saline portion of estuaries, seagrass areas are frequently cited as hotspots for their role in capturing and retaining organic carbon (Corg). Non-seagrass SAV, located in the fresh to brackish estuarine areas, may also retain significant soil Corg, yet their...
Authors
E. R. Hillman, V. H. Rivera-Monroy, A. J. Nyman, Megan K. La Peyre
Eastern oyster clearance and respiration rates in response to acute and chronic exposure to suspended sediment loads Eastern oyster clearance and respiration rates in response to acute and chronic exposure to suspended sediment loads
Coastal Louisiana supports some of the most productive areas for the eastern oyster, Crassostrea virginica. Changing conditions from restoration and climate change alter freshwater and sediment inflows into critical estuarine areas affecting water quality, including salinity and concentrations of suspended sediment. This study examined the effects of acute (1 h) and chronic (8 weeks)...
Authors
Megan K. La Peyre, S. K. Bernasconi, R. Lavaud, S. M. Casas, J. F. La Peyre
Science and Products
Filter Total Items: 94
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
Understanding nekton use of estuarine habitats in the northern Gulf of Mexico: Guidebook for natural resource managers and restoration practitioners Understanding nekton use of estuarine habitats in the northern Gulf of Mexico: Guidebook for natural resource managers and restoration practitioners
Without a comprehensive understanding of nekton use of key habitats across locations, natural resource managers and restoration practitioners in the northern Gulf of Mexico region lack a key tool to assist in their efforts to design, implement, and monitor effective coastal restoration and protection efforts in the decades to come. To address this need, Abt helped conduct a systematic...
Authors
T. A. Hollweg, M. C. Christman, K. Sauby, J. Cebrian, Megan La Peyre
Estuarine submerged aquatic vegetation habitat provides organic carbon storage across a shifting landscape Estuarine submerged aquatic vegetation habitat provides organic carbon storage across a shifting landscape
Submerged aquatic vegetation (SAV) thrives across the estuarine salinity gradient providing valuable ecosystem services. Within the saline portion of estuaries, seagrass areas are frequently cited as hotspots for their role in capturing and retaining organic carbon (Corg). Non-seagrass SAV, located in the fresh to brackish estuarine areas, may also retain significant soil Corg, yet their...
Authors
E. R. Hillman, V. H. Rivera-Monroy, A. J. Nyman, Megan K. La Peyre
Eastern oyster clearance and respiration rates in response to acute and chronic exposure to suspended sediment loads Eastern oyster clearance and respiration rates in response to acute and chronic exposure to suspended sediment loads
Coastal Louisiana supports some of the most productive areas for the eastern oyster, Crassostrea virginica. Changing conditions from restoration and climate change alter freshwater and sediment inflows into critical estuarine areas affecting water quality, including salinity and concentrations of suspended sediment. This study examined the effects of acute (1 h) and chronic (8 weeks)...
Authors
Megan K. La Peyre, S. K. Bernasconi, R. Lavaud, S. M. Casas, J. F. La Peyre