Richard Day
Richard Day is a retired Geographer at the Wetland and Aquatic Research Center in Lafayette, LA.
Science and Products
Filter Total Items: 26
Modeling barrier island habitats using landscape position information for Dauphin Island, Alabama Modeling barrier island habitats using landscape position information for Dauphin Island, Alabama
Barrier islands provide important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism (Barbier and others, 2011; Feagin and others, 2010). These islands tend to be dynamic due to their location along the estuarine-marine interface. Besides gradual changes caused by constant forces, such as currents and tides...
Using relative topography and elevation uncertainty to delineate dune habitat on barrier islands Using relative topography and elevation uncertainty to delineate dune habitat on barrier islands
Dunes with a high relative topography can often be easily distinguished in high-resolution lidar-based digital elevation models (DEMs). Thus, researchers have begun using relative topography metrics, such as the topographic position index (TPI; Weiss, 2001), to identify ridges and upper slopes for extracting dunes from lidar-based DEMs (Wernette et al., 2016; Halls et al. 2018). DEMs are...
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
In this data release, we present data from three nights of chilling temperatures in 2015 (18th/19th January 2015; 18th/19th February 2015; 5th/6th March 2015) and from three nights of freezing temperatures in 2017/2018 (6th/7th January 2017; 1nd/2nd January 2018; 16th/17th January 2018). In the paper that accompanies this release, we synthesized hypotheses regarding the effects of...
Winter climate change and coastal wetland foundation species in the southeastern United States Winter climate change and coastal wetland foundation species in the southeastern United States
In this study, we investigated the potential effect of winter climate change upon salt marsh and mangrove forest foundation species in the southeastern United States. Our research addresses the following three questions: (1) What is the relationship between winter climate and the presence and abundance of mangrove forests relative to salt marshes; (2) How vulnerable are salt marshes to...
The impact of lidar elevation uncertainty on mapping intertidal habitats on barrier islands The impact of lidar elevation uncertainty on mapping intertidal habitats on barrier islands
These data represent low-lying lands and intertidal lands on Dauphin Island, Alabama, USA for January 2015. These data were delineated using airborne lidar elevation data, in situ elevation observations, lidar metadata, and tide gauge information. We applied Monte Carlo simulations to incorporate uncertainty into a digital elevation model and produce probabilistic outputs with regards to...
Barrier island habitat map and vegetation survey, Dauphin Island, AL, 2015 Barrier island habitat map and vegetation survey, Dauphin Island, AL, 2015
This dataset includes barrier island land cover types collected from mid-November 2015 to mid-December 2015 along randomly placed transects at seven sites throughout the east end of Dauphin Island. Specifically, this data collection included characterizing land cover types and measuring horizontal position and elevation. We characterized plant community composition and structure for a...
Filter Total Items: 58
Channel modification and evolution alter hydraulic connectivity in the Atchafalaya River basin increasing vulnerability to sea-level rise Channel modification and evolution alter hydraulic connectivity in the Atchafalaya River basin increasing vulnerability to sea-level rise
Channel dredging and erosion in the Atchafalaya River basin have resulted in changes to the hydraulic connectivity of this floodplain swamp that have not been previously quantified. In this study, analyses were conducted to determine hydraulic and geomorphic factors that have changed since channel closure in 1962. Results indicated changes occurred in the Atchafalaya main channel cross...
Authors
Daniel Kroes, Richard H. Day, Charles R. Demas, Yvonne C. Allen, Steve Roberts
Modeling barrier island habitats using landscape position information Modeling barrier island habitats using landscape position information
Barrier islands are dynamic environments because of their position along the marine–estuarine interface. Geomorphology influences habitat distribution on barrier islands by regulating exposure to harsh abiotic conditions. Researchers have identified linkages between habitat and landscape position, such as elevation and distance from shore, yet these linkages have not been fully leveraged...
Authors
Nicholas Enwright, Lei Wang, Hongqing Wang, Michael Osland, Laura Feher, Sinéad M. Borchert, Richard Day
Advancing barrier island habitat mapping using landscape position information Advancing barrier island habitat mapping using landscape position information
Barrier islands are dynamic ecosystems that change gradually from coastal processes, including currents and tides, and rapidly from episodic events, such as storms. These islands provide many important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. Habitat maps, developed by scientists, provide a critical...
Authors
Nicholas Enwright, Lei Wang, Sinéad M. Borchert, Richard Day, Laura Feher, Michael Osland
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
In response to warming winter air temperatures, freeze-sensitive mangrove forests are expected to expand at the expense of freeze-tolerant salt marshes. To better anticipate and prepare for mangrove range expansion, there is a need to advance understanding of the modulating role of microclimate. Here, we synthesized hypotheses regarding the effects of microclimatic variation on...
Authors
Michael J. Osland, Arik M. Hartmann, Richard H. Day, Michael S. Ross, Courtney T. Hall, Laura C. Feher, William Vervaeke
Sediment trapping and carbon sequestration in floodplains of the lower Atchafalaya Basin, LA: Allochthonous vs. autochthonous carbon sources Sediment trapping and carbon sequestration in floodplains of the lower Atchafalaya Basin, LA: Allochthonous vs. autochthonous carbon sources
Recent studies suggest that about 2 Pg of organic C is stored on floodplains worldwide. The present study indicates the Atchafalaya River, fifth largest river in the United States in terms of discharge, traps 30 mm/y of sediment on average within its floodplain, which is the highest average non‐episodic rate of fluvial deposition on the U.S. Coastal Plain. We installed sediment sampling...
Authors
Cliff R. Hupp, Daniel E. Kroes, Gregory E. Noe, Edward R. Schenk, Richard H. Day
Mangrove forests in a rapidly changing world: Global change impacts and conservation opportunities along the Gulf of Mexico coast Mangrove forests in a rapidly changing world: Global change impacts and conservation opportunities along the Gulf of Mexico coast
Mangrove forests are highly-productive intertidal wetlands that support many ecosystem goods and services. In addition to providing fish and wildlife habitat, mangrove forests improve water quality, provide seafood, reduce coastal erosion, supply forest products, support coastal food webs, minimize flooding impacts, and support high rates of carbon sequestration. Despite their tremendous...
Authors
Michael J. Osland, Laura C. Feher, Jorge Lopez-Portillo, Richard H. Day, Daniel O. Suman, Jose Manuel Guzman Menendez, Victor H. Rivera-Monroy
Science and Products
Filter Total Items: 26
Modeling barrier island habitats using landscape position information for Dauphin Island, Alabama Modeling barrier island habitats using landscape position information for Dauphin Island, Alabama
Barrier islands provide important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism (Barbier and others, 2011; Feagin and others, 2010). These islands tend to be dynamic due to their location along the estuarine-marine interface. Besides gradual changes caused by constant forces, such as currents and tides...
Using relative topography and elevation uncertainty to delineate dune habitat on barrier islands Using relative topography and elevation uncertainty to delineate dune habitat on barrier islands
Dunes with a high relative topography can often be easily distinguished in high-resolution lidar-based digital elevation models (DEMs). Thus, researchers have begun using relative topography metrics, such as the topographic position index (TPI; Weiss, 2001), to identify ridges and upper slopes for extracting dunes from lidar-based DEMs (Wernette et al., 2016; Halls et al. 2018). DEMs are...
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
In this data release, we present data from three nights of chilling temperatures in 2015 (18th/19th January 2015; 18th/19th February 2015; 5th/6th March 2015) and from three nights of freezing temperatures in 2017/2018 (6th/7th January 2017; 1nd/2nd January 2018; 16th/17th January 2018). In the paper that accompanies this release, we synthesized hypotheses regarding the effects of...
Winter climate change and coastal wetland foundation species in the southeastern United States Winter climate change and coastal wetland foundation species in the southeastern United States
In this study, we investigated the potential effect of winter climate change upon salt marsh and mangrove forest foundation species in the southeastern United States. Our research addresses the following three questions: (1) What is the relationship between winter climate and the presence and abundance of mangrove forests relative to salt marshes; (2) How vulnerable are salt marshes to...
The impact of lidar elevation uncertainty on mapping intertidal habitats on barrier islands The impact of lidar elevation uncertainty on mapping intertidal habitats on barrier islands
These data represent low-lying lands and intertidal lands on Dauphin Island, Alabama, USA for January 2015. These data were delineated using airborne lidar elevation data, in situ elevation observations, lidar metadata, and tide gauge information. We applied Monte Carlo simulations to incorporate uncertainty into a digital elevation model and produce probabilistic outputs with regards to...
Barrier island habitat map and vegetation survey, Dauphin Island, AL, 2015 Barrier island habitat map and vegetation survey, Dauphin Island, AL, 2015
This dataset includes barrier island land cover types collected from mid-November 2015 to mid-December 2015 along randomly placed transects at seven sites throughout the east end of Dauphin Island. Specifically, this data collection included characterizing land cover types and measuring horizontal position and elevation. We characterized plant community composition and structure for a...
Filter Total Items: 58
Channel modification and evolution alter hydraulic connectivity in the Atchafalaya River basin increasing vulnerability to sea-level rise Channel modification and evolution alter hydraulic connectivity in the Atchafalaya River basin increasing vulnerability to sea-level rise
Channel dredging and erosion in the Atchafalaya River basin have resulted in changes to the hydraulic connectivity of this floodplain swamp that have not been previously quantified. In this study, analyses were conducted to determine hydraulic and geomorphic factors that have changed since channel closure in 1962. Results indicated changes occurred in the Atchafalaya main channel cross...
Authors
Daniel Kroes, Richard H. Day, Charles R. Demas, Yvonne C. Allen, Steve Roberts
Modeling barrier island habitats using landscape position information Modeling barrier island habitats using landscape position information
Barrier islands are dynamic environments because of their position along the marine–estuarine interface. Geomorphology influences habitat distribution on barrier islands by regulating exposure to harsh abiotic conditions. Researchers have identified linkages between habitat and landscape position, such as elevation and distance from shore, yet these linkages have not been fully leveraged...
Authors
Nicholas Enwright, Lei Wang, Hongqing Wang, Michael Osland, Laura Feher, Sinéad M. Borchert, Richard Day
Advancing barrier island habitat mapping using landscape position information Advancing barrier island habitat mapping using landscape position information
Barrier islands are dynamic ecosystems that change gradually from coastal processes, including currents and tides, and rapidly from episodic events, such as storms. These islands provide many important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. Habitat maps, developed by scientists, provide a critical...
Authors
Nicholas Enwright, Lei Wang, Sinéad M. Borchert, Richard Day, Laura Feher, Michael Osland
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
In response to warming winter air temperatures, freeze-sensitive mangrove forests are expected to expand at the expense of freeze-tolerant salt marshes. To better anticipate and prepare for mangrove range expansion, there is a need to advance understanding of the modulating role of microclimate. Here, we synthesized hypotheses regarding the effects of microclimatic variation on...
Authors
Michael J. Osland, Arik M. Hartmann, Richard H. Day, Michael S. Ross, Courtney T. Hall, Laura C. Feher, William Vervaeke
Sediment trapping and carbon sequestration in floodplains of the lower Atchafalaya Basin, LA: Allochthonous vs. autochthonous carbon sources Sediment trapping and carbon sequestration in floodplains of the lower Atchafalaya Basin, LA: Allochthonous vs. autochthonous carbon sources
Recent studies suggest that about 2 Pg of organic C is stored on floodplains worldwide. The present study indicates the Atchafalaya River, fifth largest river in the United States in terms of discharge, traps 30 mm/y of sediment on average within its floodplain, which is the highest average non‐episodic rate of fluvial deposition on the U.S. Coastal Plain. We installed sediment sampling...
Authors
Cliff R. Hupp, Daniel E. Kroes, Gregory E. Noe, Edward R. Schenk, Richard H. Day
Mangrove forests in a rapidly changing world: Global change impacts and conservation opportunities along the Gulf of Mexico coast Mangrove forests in a rapidly changing world: Global change impacts and conservation opportunities along the Gulf of Mexico coast
Mangrove forests are highly-productive intertidal wetlands that support many ecosystem goods and services. In addition to providing fish and wildlife habitat, mangrove forests improve water quality, provide seafood, reduce coastal erosion, supply forest products, support coastal food webs, minimize flooding impacts, and support high rates of carbon sequestration. Despite their tremendous...
Authors
Michael J. Osland, Laura C. Feher, Jorge Lopez-Portillo, Richard H. Day, Daniel O. Suman, Jose Manuel Guzman Menendez, Victor H. Rivera-Monroy