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104 results for "seagrass":

Barnegat Bay-Little Egg Harbor Estuary: Case study of a highly eutrophic coastal bay system
... blooms, altered benthic invertebrate communities, impacted harvestable fisheries, and loss of essential habitat (i.e., seagrass and shellfish beds). Similar problems are evident in other shallow lagoonal estuaries of the Mid-Atlantic and South Atl...
Blooms of the cyanobacterium Lyngbya majuscula in coastal waters of Queensland, Australia
...tation, eye inflammation and severe contact dermatitis in fisherman and swimmers as well as causing reduced fish catch, seagrass loss and localized inputs of nitrogen through nitrogen fixation. Lyngbya majuscula collected in the summers of 1996-7 a...
Ecophysiology of the marine cyanobacterium, Lyngbya majuscula (Oscillatoriaceae) in Moreton Bay, Australia
...se amplitude modulated (PAM) fluorometry assessments of photosynthetic capacity. The effects of L. majuscula on various seagrasses in the bloom region were also assessed with repeated biomass sampling. The bloom commenced in January 2000 following...
Effect of 'brown tide' shading on eelgrass
...), and reduced the light available to plants living on the bottom of the embayments. In particular, the temperate water seagrass Zostera marina L. (eelgrass) was affected by the reduced light availability due to the “brown tide” algal blooms. ... B...
Environmental Management of Aquaculture Effluent: Development of Biological Indicators and Biological Filters
...ses of the amino acid composition, tissue nitrogen content and stable isotope ratio of nitrogen ([delta][super:15]N) in seagrasses, mangroves and macroalgae were developed as biological indicators to determine the influence of shrimp farm effluent...
Great Barrier Reef Report Card Regional Summaries - 2009 Baseline
...g the report card results for land practices, catchment indicators and loads, and the marine parameters; water quality, seagrass, and corals. It also describes positive actions in the regions to improve ecosystem health. For additional details on t...
Linking water quality to living resources in a mid-Atlantic lagoon system, USA
...makes them susceptible to eutrophication resulting from anthropogenic nutrient loadings. An intensive water quality and seagrass monitoring program was initiated to track ecological changes in the Maryland and Virginia coastal bays. The purpose of...
Maryland Coastal Bays Report Card 2009
... Bays health is defined as the progressof four water quality indicators (TN, TP, Chl a , DO) and two biotic indicators (seagrass, hard clams) toward scientifically derived ecological thresholds or goals. The six indicators are combined into one ove...
Monitoring toxic cyanobacteria Lyngbya majuscula (Gomont) in Moreton Bay, Australia by integrating satellite image data and field mapping
...d have been documented since 1997. L. majuscula is a toxic cyanobacteria which fixes nitrogen and is found attached to: seagrass, algae and coral. The toxic and smothering nature of L. majuscula has affected human and environmental health in sensit...
Nitrogen Versus Phosphorus Limitation for Growth of an Estuarine Population of Eelgrass (Zostera marina L)
... to changes in nutrient availability are regulated by alterations in both growth rates and tissue nutrient content. ... seagrass syringodium-filiforme, chesapeake bay, nutrient limitation, , phytoplankton growth, thalassia-testudinum, carbonate sed...
Organochlorine and heavy metal concentrations in blubber and liver tissue collected from Queensland (Australia) dugong (Dugong dugon)
...c activities. ... bioaccumulation, dioxins, dugongs, Great Barrier Reef, heavy metals, marine mammals, organochlorines, seagrass ... Bill Dennison ... Haynes D, Carter S, Gaus C, Muller J, and Dennison WC...
Photosynthetic Response of Zostera marina (Eelgrass) to Insitu Manipulations of Light
...ic Response of Zostera marina (Eelgrass) to Insitu Manipulations of Light ... Photosynthetic responses of the temperate seagrass, Zostera marina L., were examined by manipulations of photon flux density in an eelgrass bed in Great Harbor, Woods Hol...
Photosynthetic Responses of Eelgrass (Zostera marina L) to Light and Sediment Sulfide in a Shallow Barrier-Island Lagoon
...rina L) to Light and Sediment Sulfide in a Shallow Barrier-Island Lagoon ... Highly reducing sediments are prevalent in seagrass environments. Under anoxic conditions, hydrogen sulfide can accumulate as an end product of anaerobic respiration at le...
Photosynthetic Responses of Zostera marina L (Eelgrass) to Insitu Manipulations of Light-Intensity
...of Zostera marina L (Eelgrass) to Insitu Manipulations of Light-Intensity ... Photosynthetic responses of the temperate seagrass, Zostera marina L., were examined by manipulations of photon flux density in an eelgrass bed in Great Harbor, Woods Hol...
Protecting Palau's natural heritage
...l heritage ... The Republic of Palau, an island nation in the tropical western Pacific Ocean, harbors diverse mangrove, seagrass, and coral communities. Palau is at a crossroads due to improved access to, and development of, its largest island, Bab...
Role of Daily Light Period in the Depth Distribution of Zostera marina (Eelgrass)
...ribution of Zostera marina (Eelgrass) ... ABSTRACT: Photosynthesis, biomass and growth characteristics of the temperate seagrass, Zostera marina L. (eelgrass), were examined in a meadow in Great Harbor, Woods Hole, Massachusetts during June and Aug...
Sediment-based reconstruction of submersed aquatic vegetation distribution in the Severn River, a sub-estuary of Chesapeake Bay
...resent in SAV beds at the head of the Bay. ... eutrophication, Pb-210, geochronology, SAV, seeds, sedimentation rate, , seagrass, shore, water-quality, accumulation, communities, decline, growth, sea, , photosynthesis, populations, pb-210, plants ....
Sensitivity of transects across a depth gradient to measuring changes in aerial coverage and abundance of Ruppia megacarpa Mason
...ytes and suggests that R. megacarpa is not limited by light. Its distribution may be limited by sediment type, with the seagrass being confined to coarser sediments in the Inlet. It was concluded that R. megacarpa depth distribution in Wilson Inlet...
South East Queensland Floods 2011
... Moreton Bay creatures. This newsletter provides an overview of some of the initial flood impact assessment results for seagrasses, turtles and dugongs, and identifies the risks that need to be monitored. For further infomation, see the associated...
Submarine Springs and Sewage
...r rivers. However, there are various submarine springs and fissures that deliver runoff to coastal waters. The tropical seagrass Thalassia testudinum was sampled near the developed regions of Cancun as well as in the Puerto Morelos lagoon to the so...

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