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(41 - 51 of 51)
Pages
- Title
- Atmospheric nitrogen deposition from a remote source enriches macroalgae in coral reef ecosystems near Green Turtle Cay, Abacos, Bahamas.
- Creator
- Barile, Peter J., Lapointe, Brian E.
- Date Issued
- 2005
- PURL
- http://purl.flvc.org/FCLA/DT/2827829
- Subject Headings
- Nitrogen, Atmospheric deposition, Coral reef ecology, Coral reefs and islands, Algae
- Format
- Document (PDF)
- Title
- Reciprocal Caulerpa invasion: Mediterranean native Caulerpa ollivieri in the Bahamas supported by human nitrogen enrichment.
- Creator
- Lapointe, Brian E., Barile, Peter J., Wynne, M. J., Yentsch, Charles S.
- Date Issued
- 2005
- PURL
- http://purl.flvc.org/FCLA/DT/3340515
- Subject Headings
- Caulerpa, Anthropogenic effects on nature, Nitrogen, Eutrophication, Nutrient pollution of water
- Format
- Document (PDF)
- Title
- Removal of nitrogen and phosphorus from waste water in a water hyacinth-based treatment system.
- Creator
- DeBusk, T. A., Williams, Lavergne D., Ryther, John H., Harbor Branch Oceanographic Institute
- Date Issued
- 1983
- PURL
- http://purl.flvc.org/fau/fd/FA00007326
- Subject Headings
- Water hyacinth, Sewage--Purification--Nitrogen removal, Sewage--Purification--Phosphorus removal
- Format
- Document (PDF)
- Title
- Effect of nutrient solution, nitrate-nitrogen concentration, and pH on nitrification rate in perlite medium.
- Creator
- Tyson, R. V., Simonne, E. H., Davis, Megan, Lamb, E. M., White, J. M., Treadwell, D. D.
- Date Issued
- 2007-06
- PURL
- http://purl.flvc.org/FCLA/DT/1925705
- Subject Headings
- Plants --Nutrition, Hydroponics, Perlite, Plants --Effect of nitrates on, Plants, Effect of nitrogen on, Nitrification
- Format
- Document (PDF)
- Title
- Nitrogen and phosphorus uptakeand release by the blue-green alga Microcoleus lyngbyaceus.
- Creator
- Zimmermann, Carl F., Harbor Branch Oceanographic Institute
- Date Issued
- 1988
- PURL
- http://purl.flvc.org/fau/fd/FA00007188
- Subject Headings
- Indian River (Fla. : Lagoon), Blue-green algae, Cyanobacteria, Microcoleus, Nitrogen, Phosphorus
- Format
- Document (PDF)
- Title
- Plankton availability and retention efficiencies of cold-seep symbiotic mussels.
- Creator
- Pile, Adele J., Young, Craig M., Harbor Branch Oceanographic Institute
- Date Issued
- 1999
- PURL
- http://purl.flvc.org/FCLA/DT/3172681
- Subject Headings
- Mussels, Marine plankton, Marine eutrophication--Mexico, Gulf of, Nitrogen cycle, Nutrient cycles
- Format
- Document (PDF)
- Title
- Patterns of inorganic phosphate and carbohydrate allocation in sawgrass (Cladium jamaicense Crantz) and southern cattail (Typha domingensis Pers.) grown at low and high phosphate levels.
- Creator
- Hill, Brian, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
In recent history, C. jamaicense has been displaced by another native monocot, T. domingensis, predominantly resulting from increased phosphorous enrichment in the Everglades. This study aimed to elucidate these two species responses to low and high [Pi] in terms of allocation, photosynthate partitioning and growth. C. jamaicense growth was independent of Pi, while T. domingensis growth increased with [Pi]. Under high [Pi], allocation to younger T. domingensis shoots occurred, while C....
Show moreIn recent history, C. jamaicense has been displaced by another native monocot, T. domingensis, predominantly resulting from increased phosphorous enrichment in the Everglades. This study aimed to elucidate these two species responses to low and high [Pi] in terms of allocation, photosynthate partitioning and growth. C. jamaicense growth was independent of Pi, while T. domingensis growth increased with [Pi]. Under high [Pi], allocation to younger T. domingensis shoots occurred, while C. jamaicense shoots retained more [Pi], while low [Pi] resulted in homogeneous allocation patterns for both species. Additionally, Pi deficiencies induced carbohydrate levels in older shoots of T. domingensis, while [Pi] had no effect on photosynthate partitioning patterns in C. jamaicense. ACP activity was induced by Pi deficiency in all T. domingensis shoots and increased with shoot age, while no effect was observed in C. jamaicense. Results indicate these two species differ in allocation strategies when [Pi] is altered.
Show less - Date Issued
- 2009
- PURL
- http://purl.flvc.org/FAU/238480
- Subject Headings
- Nitrogen-fixing algae, Biogeochemical cycles, Phosphorus, Psychological transport, Soil stabilization, Ecosystem management, Vegetation dynamics
- Format
- Document (PDF)
- Title
- NITROGEN ENRICHMENT, EUTROPHICATION, AND BOTTOM-UP TROPHIC SHIFTS IN ECOSYSTEMS OF THE INDIAN RIVER LAGOON.
- Creator
- Brewton, Rachel A., Lapointe, Brian, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
Eutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and...
Show moreEutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and require further investigation. Thus, drivers and effects of primary producer alterations in the IRL were investigated through analysis of long-term monitoring data, field surveys of faunal densities inhabiting macroalgae and bare bottom habitats, and stable nitrogen isotope (δ15N) analyses of primary producers, primary consumers, and secondary consumers. Long-term monitoring data from the northern IRL (NIRL) and Banana River Lagoon (BR) demonstrated there have been major seagrass losses coupled with increases in occurrence of the rhizophytic green macroalgae Caulerpa prolifera, which is now the dominant benthic cover in many locations. Multivariate analyses of long-term monitoring data spanning 2011-2020 suggested that the carbon to phosphorus ratio (C:P) of macroalgae is an important factor related to annual changes in benthic cover in the NIRL and BR; increased P-availability is correlated with these primary producer shifts. In situ collections of macroinvertebrates and resident fishes showed the current function and importance of macroalgae as habitat in the NIRL and BR, particularly in the relative absence of seagrass.
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014231
- Subject Headings
- Indian River (Fla. : Lagoon), Estuarine eutrophication, Nitrogen, Harmful Algal Bloom, Estuarine ecology
- Format
- Document (PDF)
- Title
- Macroalgal blooms on southeast Florida coral reefs I. Nutrient stoichiometry of the invasive green alga Codium isthmocladum in the wider Caribbean indicates nutrient enrichment.
- Creator
- Lapointe, Brian E., Barile, Peter J., Littler, Mark M., Littler, Diane S., Bedford, Bradley J., Gasque, Constance
- Date Issued
- 2005
- PURL
- http://purl.flvc.org/FCLA/DT/2827824
- Subject Headings
- Coral reef biology --Florida, Coral reefs and islands --Florida, Algae, Eutrophication --Toxicology, Water --Nitrogen content, Water --Phosphorus content
- Format
- Document (PDF)
- Title
- Phosphorus limitation in reef macroalgae of South Florida.
- Creator
- Kehler, Courtney., Charles E. Schmidt College of Science, Center for Environmental Studies
- Abstract/Description
-
Nitrogen (N) has traditionally been regarded as the primary limiting nutrient to algal growth in marine coastal waters, but recent studies suggest that phosphorus (P) can be limiting in carbonate-rich environments. To better understand the importance of P. alkaline phosphatase activity (APA) was measured in reef macroalgae in seven counties of south Florida ; several significant trends emerged : 1) APA decreased geographically from the highest values in Dada>Monroe>Palm Beach>St. Lucie...
Show moreNitrogen (N) has traditionally been regarded as the primary limiting nutrient to algal growth in marine coastal waters, but recent studies suggest that phosphorus (P) can be limiting in carbonate-rich environments. To better understand the importance of P. alkaline phosphatase activity (APA) was measured in reef macroalgae in seven counties of south Florida ; several significant trends emerged : 1) APA decreased geographically from the highest values in Dada>Monroe>Palm Beach>St. Lucie>Broward>Martin>Lee counties 2) APA varied temporally with increasing nutrient-rich runoff in the wet season 3) APA varied due to taxonomic division Phaeophyta>Rhodophyta>Chlorophyta 4) Nutrient enrichment experiments demonstrated that increased N-enrichment enhanced P-limitation while increased P decreased P-limitation. These results suggest that high APA observed in carbonate-rich waters of Dade County and low APA in Broward County resulted from high nutrient inputs associated with anthropogenic nutrient pollution.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3358598
- Subject Headings
- Nitrogen, Environmental aspects, Coral reef ecology, Coral reef biology, Marine algae, Physiology, Algal communities, Physiology
- Format
- Document (PDF)
- Title
- Contribution of on-site treatment and disposal systems on coastal nutrient loading.
- Creator
- Morin, Frederic., Florida Atlantic University, Meeroff, Daniel E., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
When onsite treatment and disposal systems (OSTDS) are not properly sited, they can be a potential risk to public health and a source of environmental degradation. In Florida, OSTDS location has proven to be problematic from a water resources perspective. The objective of this study is to quantify the pollutant loading contributions from OSTDS on coastal canals, with regard to nutrients and pathogens indicators (Total Coliform, E. coli, Enterococcus). Two similar single-family residential...
Show moreWhen onsite treatment and disposal systems (OSTDS) are not properly sited, they can be a potential risk to public health and a source of environmental degradation. In Florida, OSTDS location has proven to be problematic from a water resources perspective. The objective of this study is to quantify the pollutant loading contributions from OSTDS on coastal canals, with regard to nutrients and pathogens indicators (Total Coliform, E. coli, Enterococcus). Two similar single-family residential locations were identified: Dania Beach, FL (with 100% OSTDS) and Hollywood, FL (with 100% sewer). Field studies were conducted during the height of the wet and dry seasons. During the wet season, surface water quality of the canal was affected by an OSTDS contribution with higher levels of nutrients and pathogens indicators. During the dry season, no OSTDS impact was detected. OSTDS appear to work properly during the dry season.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13224
- Subject Headings
- Estuarine ecology, Sewage disposal--Florida, Sewage--Purification--Nitrogen removal, Land treatment of wastewater--Florida
- Format
- Document (PDF)
