Author: Matthew Joseph Dvorak
Publisher:
ISBN: 9781109817935
Category :
Languages : en
Pages : 94
Book Description
Four estuaries in southwest Florida with different land use characteristics in their watersheds were chosen to investigate the effects of anthropogenic land use on estuarine health. Estuaries were sampled for salinity, dissolved oxygen (DO), concentration of dissolved inorganic carbon (DIC), stable carbon isotope ratios of DIC (delta13CDIC), stable carbon isotope ratios of particulate organic carbon (delta13C POC), concentration of particulate organic carbon (POC), nitrogen isotope ratios of particulate organic nitrogen (delta15NPON ), C/N ratios, and chlorophyll-alpha concentrations (Chl-alpha). delta 13CDIC values ranged from -14.09 to +0.85‰. The more negative values occurred upstream, and resulted from DIC inputs derived from the degradation of organic carbon and the dissolution of carbonates. The more positive values occurred downstream, and were typical of marine values. DIC concentrations ranged from 1461 to 8066 mumol/L. Higher concentrations occurred upstream and support the interpretation that high respiration rates were occurring in the upstream sampling points. A comparison of DIC values to a conservative mixing model indicates that the input of terrestrial organic matter and its degradation created a net heterotrophic metabolic state in all four estuaries. Supporting this interpretation, delta13C POC values (-36.53 to -20.11‰) suggest that terrestrial plants were the main source of POC in the upstream sampling points, while aquatic plants were the main contributor of POC in the downstream sampling points. delta 15NPON values range from +1.52 to +5.60‰, which is consistent with natural sources of nutrients. C/N ratios ranged from 7.2 to 13.4, and are consistent with both terrestrial and aquatic sources. Chl-alpha concentrations were variable and were typically below 20 mug/L, indicating moderate to low levels of autotrophy in all estuaries. Elevated Chl-alpha concentrations indicative of increased primary productivity occurred at intermediate salinities (mid-estuary). It is possible the mixing front at mid-estuary locations influenced Chl-alpha concentrations. Results from this study show no apparent difference between the estuaries, including the control site, thus indicating that anthropogenic activities had little effect on the parameters measured.
Assessing Estuarine Health in Rookery Bay National Estuarine Research Reserve Using a Geochemical Approach
Author: Matthew Joseph Dvorak
Publisher:
ISBN: 9781109817935
Category :
Languages : en
Pages : 94
Book Description
Four estuaries in southwest Florida with different land use characteristics in their watersheds were chosen to investigate the effects of anthropogenic land use on estuarine health. Estuaries were sampled for salinity, dissolved oxygen (DO), concentration of dissolved inorganic carbon (DIC), stable carbon isotope ratios of DIC (delta13CDIC), stable carbon isotope ratios of particulate organic carbon (delta13C POC), concentration of particulate organic carbon (POC), nitrogen isotope ratios of particulate organic nitrogen (delta15NPON ), C/N ratios, and chlorophyll-alpha concentrations (Chl-alpha). delta 13CDIC values ranged from -14.09 to +0.85‰. The more negative values occurred upstream, and resulted from DIC inputs derived from the degradation of organic carbon and the dissolution of carbonates. The more positive values occurred downstream, and were typical of marine values. DIC concentrations ranged from 1461 to 8066 mumol/L. Higher concentrations occurred upstream and support the interpretation that high respiration rates were occurring in the upstream sampling points. A comparison of DIC values to a conservative mixing model indicates that the input of terrestrial organic matter and its degradation created a net heterotrophic metabolic state in all four estuaries. Supporting this interpretation, delta13C POC values (-36.53 to -20.11‰) suggest that terrestrial plants were the main source of POC in the upstream sampling points, while aquatic plants were the main contributor of POC in the downstream sampling points. delta 15NPON values range from +1.52 to +5.60‰, which is consistent with natural sources of nutrients. C/N ratios ranged from 7.2 to 13.4, and are consistent with both terrestrial and aquatic sources. Chl-alpha concentrations were variable and were typically below 20 mug/L, indicating moderate to low levels of autotrophy in all estuaries. Elevated Chl-alpha concentrations indicative of increased primary productivity occurred at intermediate salinities (mid-estuary). It is possible the mixing front at mid-estuary locations influenced Chl-alpha concentrations. Results from this study show no apparent difference between the estuaries, including the control site, thus indicating that anthropogenic activities had little effect on the parameters measured.
Publisher:
ISBN: 9781109817935
Category :
Languages : en
Pages : 94
Book Description
Four estuaries in southwest Florida with different land use characteristics in their watersheds were chosen to investigate the effects of anthropogenic land use on estuarine health. Estuaries were sampled for salinity, dissolved oxygen (DO), concentration of dissolved inorganic carbon (DIC), stable carbon isotope ratios of DIC (delta13CDIC), stable carbon isotope ratios of particulate organic carbon (delta13C POC), concentration of particulate organic carbon (POC), nitrogen isotope ratios of particulate organic nitrogen (delta15NPON ), C/N ratios, and chlorophyll-alpha concentrations (Chl-alpha). delta 13CDIC values ranged from -14.09 to +0.85‰. The more negative values occurred upstream, and resulted from DIC inputs derived from the degradation of organic carbon and the dissolution of carbonates. The more positive values occurred downstream, and were typical of marine values. DIC concentrations ranged from 1461 to 8066 mumol/L. Higher concentrations occurred upstream and support the interpretation that high respiration rates were occurring in the upstream sampling points. A comparison of DIC values to a conservative mixing model indicates that the input of terrestrial organic matter and its degradation created a net heterotrophic metabolic state in all four estuaries. Supporting this interpretation, delta13C POC values (-36.53 to -20.11‰) suggest that terrestrial plants were the main source of POC in the upstream sampling points, while aquatic plants were the main contributor of POC in the downstream sampling points. delta 15NPON values range from +1.52 to +5.60‰, which is consistent with natural sources of nutrients. C/N ratios ranged from 7.2 to 13.4, and are consistent with both terrestrial and aquatic sources. Chl-alpha concentrations were variable and were typically below 20 mug/L, indicating moderate to low levels of autotrophy in all estuaries. Elevated Chl-alpha concentrations indicative of increased primary productivity occurred at intermediate salinities (mid-estuary). It is possible the mixing front at mid-estuary locations influenced Chl-alpha concentrations. Results from this study show no apparent difference between the estuaries, including the control site, thus indicating that anthropogenic activities had little effect on the parameters measured.
Rookery Bay National Estuarine Research Reserve
Author: Rookery Bay National Estuarine Research Reserve
Publisher:
ISBN:
Category : Estuarine reserves
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Estuarine reserves
Languages : en
Pages :
Book Description
A Synthesis of Research in the National Estuarine Research Reserve System
Author:
Publisher:
ISBN:
Category : Coastal zone management
Languages : en
Pages : 630
Book Description
Publisher:
ISBN:
Category : Coastal zone management
Languages : en
Pages : 630
Book Description
Rookery Bay National Estuarine Research Reserve Management Plan
Author: Florida. Office of Coastal and Aquatic Managed Areas
Publisher:
ISBN:
Category : Estuaries
Languages : en
Pages : 318
Book Description
Publisher:
ISBN:
Category : Estuaries
Languages : en
Pages : 318
Book Description
Rookery Bay National Estuarine Research Reserve
Author: Florida. Office of Coastal and Aquatic Managed Areas
Publisher:
ISBN:
Category : Estuaries
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Estuaries
Languages : en
Pages :
Book Description
Estuarine Research, Monitoring, and Resource Protection
Author: Michael J. Kennish
Publisher: CRC Press
ISBN: 9780849319600
Category : Science
Languages : en
Pages : 324
Book Description
The ongoing growth of human populations within US coastal regions continues to increase habitat loss, eutrophication, organic loading, overfishing, and other anthropogenic stressors in estuarine waters. The National Estuarine Research Reserve System (NERRS) is a federally funded initiative that addresses these critical estuarine problems and coastal resource issues at 25 sites in 21 states. Now estuarine and watershed scientists, resource managers, community planners, and other professionals dealing with coastal zone issues have an expert resource describing the NERRS program, organization, goals, and management strategy. Estuarine Research, Monitoring, and Restoration first defines the components and technical aspects of the NERRS program, then provides valuable insight into the program through the presentation of six case studies of NERRS sites. This book examines estuarine problems including degraded water quality, reduction of biodiversity, and problematic invasive species, then analyzes the human impacts affecting estuaries. The comprehensive analysis of the six estuarine reserve locations characterizes each region's physical, chemical, and biological conditions from the perspective of the NERRS program. These case studies include a cross section of sites from three coasts, each study emphasizing the importance of unified efforts of government and citizens to successfully maintain the ecology of these critical areas.
Publisher: CRC Press
ISBN: 9780849319600
Category : Science
Languages : en
Pages : 324
Book Description
The ongoing growth of human populations within US coastal regions continues to increase habitat loss, eutrophication, organic loading, overfishing, and other anthropogenic stressors in estuarine waters. The National Estuarine Research Reserve System (NERRS) is a federally funded initiative that addresses these critical estuarine problems and coastal resource issues at 25 sites in 21 states. Now estuarine and watershed scientists, resource managers, community planners, and other professionals dealing with coastal zone issues have an expert resource describing the NERRS program, organization, goals, and management strategy. Estuarine Research, Monitoring, and Restoration first defines the components and technical aspects of the NERRS program, then provides valuable insight into the program through the presentation of six case studies of NERRS sites. This book examines estuarine problems including degraded water quality, reduction of biodiversity, and problematic invasive species, then analyzes the human impacts affecting estuaries. The comprehensive analysis of the six estuarine reserve locations characterizes each region's physical, chemical, and biological conditions from the perspective of the NERRS program. These case studies include a cross section of sites from three coasts, each study emphasizing the importance of unified efforts of government and citizens to successfully maintain the ecology of these critical areas.
Characterization of the Rookery Bay National Estuarine Research Reserve
Author:
Publisher:
ISBN:
Category : Algal blooms
Languages : en
Pages :
Book Description
Characterizes the culture, ecology and resources in the reserve, the surrounding state managed aquatic preserve and their watersheds.
Publisher:
ISBN:
Category : Algal blooms
Languages : en
Pages :
Book Description
Characterizes the culture, ecology and resources in the reserve, the surrounding state managed aquatic preserve and their watersheds.
North Inlet/Winyah Bay National Estuarine Research Reserve Management Plan
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 328
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 328
Book Description
Estuarine Research: Chemistry, biology, and the estuarine system
Author: Lewis Eugene Cronin
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 764
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 764
Book Description
Padilla Bay National Estuarine Research Reserve
Author:
Publisher:
ISBN:
Category : Coastal zone management
Languages : en
Pages : 179
Book Description
Publisher:
ISBN:
Category : Coastal zone management
Languages : en
Pages : 179
Book Description