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Marine Biology

2003

Habitat connectivity

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Habitat Connectivity In Coastal Environments: Patterns And Movements Of Caribbean Coral Reef Fishes With Emphasis On Bluestriped Grunt, Haemulon Sciurus, Jim Beets, Lisa Muehlstein, Kerri Haught, Henry Schmitges Jan 2003

Habitat Connectivity In Coastal Environments: Patterns And Movements Of Caribbean Coral Reef Fishes With Emphasis On Bluestriped Grunt, Haemulon Sciurus, Jim Beets, Lisa Muehlstein, Kerri Haught, Henry Schmitges

Gulf and Caribbean Research

Habitat connectivity within tropical marine seascapes may be greatly dependent on the movement of large organisms, particularly fishes. Using visual and trap sampling within two small bays in Virgin Islands National Park/Biosphere Reserve, St. John, U.S. Virgin Islands, we documented that large coral reef fishes, particularly large adult grunts, which shelter by day on coral reefs and make nocturnal feeding migrations into seagrass beds, accounted for the greatest biomass and abundance of fishes sampled in seagrass habitat. Using passive tags and sonic telemetry, we documented the nocturnal migration patterns of large adult grunts (bluestriped grunts, Haemulon sciurus), which are …


Habitat Connectivity In Reef Fish Communities And Marine Reserve Design In Old Providence-Santa Catalina, Colombia, R.S. Appeldoorn, A. Friedlander, J. Sladek Nowlis, P. Usseglio, A. Mitchell-Chui Jan 2003

Habitat Connectivity In Reef Fish Communities And Marine Reserve Design In Old Providence-Santa Catalina, Colombia, R.S. Appeldoorn, A. Friedlander, J. Sladek Nowlis, P. Usseglio, A. Mitchell-Chui

Gulf and Caribbean Research

On the insular platform of Old Providence/Santa Catalina, Colombia, we compared nearshore lagoonal patch reefs to those on the northern bank distant from the islands to determine the importance of habitat connectivity to fish community structure. Nearshore patch reefs had greater proximity to mangrove, seagrass and rocky shore habitats, and they had significantly more individuals. Nearshore reefs also tended to have a greater total biomass, more species, a higher proportion of predators of mobile invertebrates and small fishes, and a lower proportion of herbivores. Biomass of snappers and grunts at nearshore sites was four times greater compared to bank sites, …