Author |
Dr. John Valentine |
Maintainer |
data@disl.org |
Last Updated |
July 23, 2022, 03:04 (UTC)
|
Created |
July 23, 2022, 03:04 (UTC)
|
Access_Constraints |
Permission to access these data must be given by Dr. John Valentine. |
ISO 19115 Topic Categories |
biota, 002, environment, 007, oceans, 014 |
Place Keywords |
Florida, Florida Keys, USA, Newfound Harbor, Looe Key, Washerwoman Reef Tract, Grecian Rocks, Little Grecian Rocks, Key Largo Dry Rocks, White Banks |
Theme Keywords |
coral reefs, exploited species, food web interactions, seagrass herbivory, trophic cascade, trophic transfer, seagrass, reef-seagrass interfaces, habitat, predatory fish, prey fish, community structure, grazing intensity, invertebrate predation potential, abundance, tethering, no-take site, fished site, herbivore, carnivore, omnivore, piscivore, invertivore |
Use_Constraints |
Acknowledgment of the DISL: Valentine Lab, the Nature Conservancy’s Ecosystem Research Program and NOAA’s Marine Fisheries Initiative (MARFIN) Program would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in the metadata document. These data are not legal documents and are not to be used as such. |
dc.contributor |
DISL: Valentine Lab |
dc.coverage.placeName |
Florida Florida Keys USA Newfound Harbor Looe Key Washerwoman Reef Tract Grecian Rocks Little Grecian Rocks Key Largo Dry Rocks White Banks |
dc.coverage.t.max |
200908T |
dc.coverage.t.min |
200005T |
dc.coverage.x.max |
80.29694 |
dc.coverage.x.min |
80.34277 |
dc.coverage.y.max |
25.12444 |
dc.coverage.y.min |
25.10666 |
dc.creator |
Dauphin Island Sea Lab: Valentine Lab |
dc.date |
Unpublished material |
dc.description |
The removal of fish biomass by extensive commercial and recreational fishing has been hypothesized to drastically alter the strength of trophic linkages among adjacent habitats. We evaluated the effects of removing predatory fishes on trophic transfers between coral reefs and adjacent seagrass meadows by comparing fish community structure, grazing intensity, and invertebrate predation potential in predator-rich no-take sites and nearby predator-poor fished sites in the Florida Keys (USA). Exploited fishes were more abundant at the no-take sites than at the fished sites. Most of the exploited fishes were either omnivores or invertivores. More piscivores were recorded at no-take sites, but most (;95%) were moderately fished and unexploited species (barracuda and bar jacks, respectively). Impacts of these consumers on lower trophic levels were modest. Herbivorous and smaller prey fish (,10 cm total length) densities and seagrass grazing diminished with distance from reefs and were not negatively impacted by the elevated densities of exploited fishes at no-take sites. Predation by reef fishes on most tethered invertebrates was high, but exploited species impacts varied with prey type. The results of the study show that, even though abundances of reef associated fishes have been reduced at fished sites, there is little evidence that this has produced cascading trophic effects or interrupted cross-habitat energy exchanges between coral reefs and seagrasses. |
dc.language |
en |
dc.source |
Exploited Species Imapcts on Trophic Linkages Along Reef–Seagrass Interfaces in the Florida Keys |
dc.subject |
coral reefs exploited species food web interactions seagrass herbivory trophic cascade trophic transfer seagrass reef-seagrass interfaces habitat predatory fish prey fish community structure grazing intensity invertebrate predation potential abundance tethering no-take site fished site herbivore carnivore omnivore piscivore invertivore |
dc.title |
Exploited Species Impacts on Trophic Linkages Along Reef–Seagrass Interfaces in the Florida Keys |
dc.type |
spreadsheet |
spatial |
{ "type": "Polygon", "coordinates": [ [ [ 80.34277, 25.12444 ], [ 80.29694, 25.12444 ], [ 80.29694, 25.10666 ], [ 80.34277, 25.10666 ], [ 80.34277, 25.12444 ] ] ] } |