Current Search: Food chains Ecology (x)
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(1 - 13 of 13)
- Title
- Trophic linkages of primary producers and consumers in fringing mangroves of tropical lagoons.
- Creator
- Kieckbusch, David Keith, Florida Atlantic University, Koch, Marguerite, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Stable carbon and nitrogen isotope ratios were analyzed to investigate the trophic linkages between primary producers and consumers in fringing mangrove ecosystems of The Bahamas and Biscayne Bay, Florida. The isotope ratios, in conjunction with stomach content analysis, were used to trace the flow of organic matter from the primary organic sources (mangroves, seagrass and macro-algae) to primary consumers and ultimately to the gray snapper (Lutjanus griseus). We found the mean delta^13C...
Show moreStable carbon and nitrogen isotope ratios were analyzed to investigate the trophic linkages between primary producers and consumers in fringing mangrove ecosystems of The Bahamas and Biscayne Bay, Florida. The isotope ratios, in conjunction with stomach content analysis, were used to trace the flow of organic matter from the primary organic sources (mangroves, seagrass and macro-algae) to primary consumers and ultimately to the gray snapper (Lutjanus griseus). We found the mean delta^13C value of the primary consumers (-17.1%) to be closely related to the mean values of the macro-algal material (-16.7%) and the seagrass (-10.5%) with very little correlation to the carbon signature of mangroves (mean = -27.4%). Our results suggest the ultimate source of carbon for the primary and secondary consumers, located at our study sites, is algal and seagrass material, individually or possibly as a mixture, and that mangroves are not the sole source of carbon in these systems.
Show less - Date Issued
- 2001
- PURL
- http://purl.flvc.org/fcla/dt/12754
- Subject Headings
- Mangrove ecology, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- ANALYSIS OF TROPHIC STRUCTURE FOLLOWING ESTUARINE HABITAT RESTORATION WITHIN LAKE WORTH LAGOON, FLORIDA.
- Creator
- Kobylski, Adam, Markwith, Scott, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
We collected, with FWC, taxa inventory and numerical abundance data at three sites, a restoration concurrent with sampling, an older completed restoration, and an unimproved reference site, from 2014 to 2018 in the Central Lake Worth Lagoon, Florida. We examined effects in response to estuary habitat restoration and water quality on nekton food web structure among sites over time. A binary matrix of plausible interactions among trophic species, classified by size, was used to produce 51...
Show moreWe collected, with FWC, taxa inventory and numerical abundance data at three sites, a restoration concurrent with sampling, an older completed restoration, and an unimproved reference site, from 2014 to 2018 in the Central Lake Worth Lagoon, Florida. We examined effects in response to estuary habitat restoration and water quality on nekton food web structure among sites over time. A binary matrix of plausible interactions among trophic species, classified by size, was used to produce 51 individual food webs and nine trophic structure metrices within the R: Package Cheddar. Interactions of site and restoration, i.e., pre- vs. post-restoration samples, were found to be not significant in repeated-measures ANOVAs for each food web metric. Random forest analysis only identified Secchi depth as an important predictor of food web generality. Our findings suggest that generality and Secchi depth are inversely correlated and relatively stable within the Central Lake Worth Lagoon sites.
Show less - Date Issued
- 2022
- PURL
- http://purl.flvc.org/fau/fd/FA00013921
- Subject Headings
- Estuarine restoration, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- The trophic ecology of caridean shrimps in an eelgrass community.
- Creator
- Howard, Robert K., Harbor Branch Oceanographic Institute
- Date Issued
- 1984
- PURL
- http://purl.flvc.org/FCLA/DT/3331854
- Subject Headings
- Shrimps, Food chains (Ecology), Decapoda (Crustacea), Eelgrass
- Format
- Document (PDF)
- Title
- 13C/12C ratios and the trophic importance of algae in Florida Syringodium filiforme seagrass meadows.
- Creator
- Fry, B., Harbor Branch Oceanographic Institute
- Date Issued
- 1984
- PURL
- http://purl.flvc.org/FCLA/DT/3176733
- Subject Headings
- Algae, Carbon--Isotopes, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- FOOD WEB MODELING TO ASSESS INTERACTIONS BETWEEN ARTIFICIAL REEFS AND NATURAL REEFS.
- Creator
- McNamee, Elizabeth A., Hughes, Colin, Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
- Abstract/Description
-
The effect of artificial reefs on natural reefs is poorly understood. This study focused on Aquarius Reef Base (ARB), an underwater habitat offshore of Key Largo, Florida, and 14 natural reef sites spanning 4 habitats, on the surrounding Conch Reef. Food web models were created for ARB and natural reef habitats. Biomass at each habitat was quantified by fish surveys. Using Ecopath, species were organized into functional groups with supporting data from previous research for other inputs. ARB...
Show moreThe effect of artificial reefs on natural reefs is poorly understood. This study focused on Aquarius Reef Base (ARB), an underwater habitat offshore of Key Largo, Florida, and 14 natural reef sites spanning 4 habitats, on the surrounding Conch Reef. Food web models were created for ARB and natural reef habitats. Biomass at each habitat was quantified by fish surveys. Using Ecopath, species were organized into functional groups with supporting data from previous research for other inputs. ARB’s food web was found to have a large predator biomass with insufficient prey biomass to sustain the population, suggesting that these predators must forage on nearby natural reefs where the predator/prey ratio is smaller. Between 0.57km2 and 1.79km2 of natural reef is estimated to be a sufficient spatial subsidy for the large predatory biomass at ARB when the biomass is added as determined by the seascape around the artificial reef.
Show less - Date Issued
- 2021
- PURL
- http://purl.flvc.org/fau/fd/FA00013798
- Subject Headings
- Artificial reefs, Coral reefs, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Acoustical detection of high-density demersal krill layers in the submarine canyons off Georges Bank.
- Creator
- Greene, C. H., Wiebe, P. H., Burczynski, J., Youngbluth, Marsh J.
- Date Issued
- 1988
- PURL
- http://purl.flvc.org/fau/fd/FA00007059
- Subject Headings
- Georges Bank, Krill, Bioacoustics, Euphausiidae, Marine ecology, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Fatty acid trophic markers and trophic links among seston, crustaceanzooplankton and the siphonophore Nanomia cara in Georges Basin and Oceanographer Canyon (NWAtlantic).
- Creator
- Rossi, S., Youngbluth, Marsh J., Jacoby, C. A., Pages, F., Garrofe, X.
- Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00007246
- Subject Headings
- Maine, Gulf of, Siphonophores, Fatty acids, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Reproduction, growth and trophic interactions of Doriopsilla pharpa Marcus in South Carolina.
- Creator
- Eyster, Linda S., Stancyk, Stephen E., Harbor Branch Oceanographic Institute
- Date Issued
- 1981
- PURL
- http://purl.flvc.org/FCLA/DT/3174442
- Subject Headings
- Nudibranchia, Reproduction, Sponges, Predation (Biology), Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Feeding and functional morphology of the lobate ctenophore Mnemiopsis mccradyi.
- Creator
- Larson, R. J., Harbor Branch Oceanographic Institute
- Date Issued
- 1988
- PURL
- http://purl.flvc.org/FCLA/DT/3173011
- Subject Headings
- Ctenophora, Animal feeding, Predation (Biology), Zooplankton, Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Comments on “Trophic structure and productivity of a windward coral reef community on Eniwetok Atoll” [Ecological Monographs 25 (3) (1955) 291–320].
- Creator
- Barile, Peter J., Harbor Branch Oceanographic Institute
- Date Issued
- 2004
- PURL
- http://purl.flvc.org/FCLA/DT/2848322
- Subject Headings
- Food chains (Ecology), Coral reef ecology, Coral reefs and islands, Coastal ecology, Benthos
- Format
- Document (PDF)
- Title
- Seagrass beds versus sand bottoms: the trophic importance of their associated benthic invertebrates.
- Creator
- Virnstein, Robert W., Mikkelsen, Paul S., Cairns, Kalani D., Capone, Mary Ann, Harbor Branch Oceanographic Institute
- Date Issued
- 1983
- PURL
- http://purl.flvc.org/fau/fd/FA00007480
- Subject Headings
- Seagrasses--Florida--Indian River (Lagoon), Meiofauna, Aquatic invertebrates., Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Trophic ecology of planktonic gelatinous predators in Saanich Inlet, British Columbia: diets and prey selection.
- Creator
- Larson, R. J., Harbor Branch Oceanographic Institute
- Date Issued
- 1987
- PURL
- http://purl.flvc.org/FCLA/DT/3355140
- Subject Headings
- Ctenophores, Medusae, Jellyfishes, Saanich Peninsula (B.C.), Food chains (Ecology)
- Format
- Document (PDF)
- Title
- Attitudes and perspectives about backyard food gardening: a case study in South Florida.
- Creator
- Zahina-Ramos, John G., Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
As cities grew throughout the past century, the availability of locally grown food declined, mostly because urban expansion occurred at the expense of adjacent agricultural land. As a result, city dwellers turned to commercial food market systems that import food from distant production areas. Private greenspace, which is one of the largest land cover types in cities, offers the potential for substantial agricultural production. Because urban food production on private land, such as backyards...
Show moreAs cities grew throughout the past century, the availability of locally grown food declined, mostly because urban expansion occurred at the expense of adjacent agricultural land. As a result, city dwellers turned to commercial food market systems that import food from distant production areas. Private greenspace, which is one of the largest land cover types in cities, offers the potential for substantial agricultural production. Because urban food production on private land, such as backyards, requires the willing participation of landowners, resident's feelings about and experience with food growing are important to understand. The demographic groups that were most likely to food garden were those in long-term relationships, higher income brackets, those with college education and residents over 50 years old. Incentives and programs focused on producing more from existing gardens may be most appropriate for people in these demographic groups, while other groups will most require basic food growing information. Study participants highly valued intangible benefits of food gardening (e.g., relaxation, feelings of happiness and satisfaction), often more than the provision of food. Most barriers and problems with backyard food growing, such as a lack of space and the need for gardening information, were similar for those who food garden and those who do not. Results from this study indicate that traditional agricultural incentives and perspectives must be rethought if they are to be applied in urban settings. By creating incentives and initiatives that reflect the needs and challenges faced by urban growers, urban agriculture will become an integrated part of the community, improving food quantity and quality while enriching residents' lives.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fcla/dt/3361258
- Subject Headings
- Backyard gardens, Food chains (Ecology), Garden ecology, Green movement, Sustainable development
- Format
- Document (PDF)
