Species, including seagrasses, at their range limits are uniquely vulnerable to climate change. In the western Atlantic Ocean, biogeographic transition zone between temperate and tropical ecosystems is recognized as one of several global hotspots where poleward-flowing boundary currents forecast warm faster than average. this region seagrass ecosystem services primarily supplied by two species,...

Seagrasses are declining globally, in large part due to increased anthropogenic coastal nutrient loads that enhance smothering by macroalgae, attenuate light, and toxic when excessive concentrations of inorganic nitrogen phosphorus. However, as sanitation is improved many seagrass meadows have been observed recover, with a few studies suggesting they may even benefit from mild additions. Monito...

Seagrass habitats exhibit high structural variability at local (<1 to 10s of m) and landscape (100 to 1000s of m) scales, which is closely linked with physical setting. In this study, we conducted 2 spring and 2 fall field surveys in 1991 and 1992 over a 25 km long portion of Core and Back Sounds, North Carolina, USA, to relate macrofaunal abundance to measures of seagrass landscape structure a...

This study has determined the relationship and extent of mangrove reduced carbon flow and its contribution to the diet of higher consumers in a nearby seagrass bed using stable isotope techniques. In a seagrass bed approximately 80 m from a riverine mangrove community, detritus from seagrass or other marine sources of carbon such as epiphytes (Stilophora rhizodes) or phytoplankton the major con...

An extensive and diverse assemblage of seagrass habitats exists along the tropical and subtropical coastline of north east Australia and the associated Great Barrier Reef. In their natural state, these habitats are characterised by very low nutrient concentrations and are primarily nitrogen limited. Summer rainfall and tropical storms/cyclones lead to large flows of sediment-laden fresh water. ...

An anaerobic, H(2)-utilizing bacterium, strain RD-1, was isolated from the highest growth-positive dilution series of a root homogenate prepared from the sea grass Halodule wrightii. Cells of RD-1 were gram-positive, spore-forming, motile rods that were linked by connecting filaments. Acetate was produced in stoichiometries indicative of an acetyl coenzyme A (acetyl-CoA) pathway-dependent metab...

LIRMAN, D.; DEANGELO, G.; SERAFY, J.E.; HAZRA, A.; HAZRA, D.S.; and BROWN, A., 2008. Geospatial video monitoring of nearshore benthic habitats of western Biscayne Bay (Florida) using the shallow-water positioning system (SWaPS). Journal of Coastal Research, 24(1A), 135–145. West Palm Beach (Florida), ISSN 0749-0208. The nearshore habitats of western Biscayne Bay, a shallow lagoon adjacent to th...

We conducted predation experiments to evaluate the vulnerability of red drum Sciaenops ocellatus (Linnaeus) larvae and early juveniles to pin®sh Lagodon rhomboides (Linnaeus) predators. Experiments were designed to analyze the e€ects of habitat complexity, prey size, and rearing condition on prey vulnerability. Three structurally di€erent habitats [unvegetated (substrate only), shoal grass Halo...

—The degradation and destruction of estuarine habitats threaten the organisms that depend on these habitats for food and shelter. Gags Mycteroperca microlepis reside on rocky reefs for most of their lives but initially settle and rear in estuarine habitats before moving to offshore reefs. Gag populations have declined to the point where some consider them vulnerable to extinction, and the recov...