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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...

Measurement of light penetration in relation to seagrass

Measurement of light penetration in relation to seagrass ... Measurement of light penetration in relation to seagrass ... Tim Carruthers ... Ben Longstaff ... Bill Dennison ... Carruthers TJB, Longstaff BJ, Dennison WC, Abal EG, and Aioi...

Microbial nutrient cycling in seagrass sediments

Microbial nutrient cycling in seagrass sediments ... Microbial nutrient cycling in seagrass sediments ... Bill Dennison ... Perry CJ and Dennison WC...

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...

Multiple stressors threaten the imperiled coastal foundation species eelgrass (Zostera marina) in Chesapeake Bay, USA

...ed. This situation is primarily due to lack of comprehensive, sufficiently long-term, and spatially extensive datasets. Seagrasses, which provide nursery habitat, improve water quality, and constitute a globally important carbon sink, are among the...

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...

Phosphorus-Limited Growth of the Tropical Seagrass Syringodium-Filiforme in Carbonate Sediments

Phosphorus-Limited Growth of the Tropical Seagrass Syringodium-Filiforme in Carbonate Sediments ... Seagrasses, along with all other marine primary producers, are generally considered to be nitrogen limited. Now experimental enr...

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...

Physiological ecology of the seagrass Zostera marina

Physiological ecology of the seagrass Zostera marina ... The adaptive physiology of Zostera marina, L. (eelgrass) was investigated along a water depth gradie...

Physiological responses of five seagrass species to trace metals

Physiological responses of five seagrass species to trace metals ... Trace metal run-off associated with urban and industrial development poses potential threat...

Physiological responses of seagrasses used to identify anthropogenic nutrient inputs

Physiological responses of seagrasses used to identify anthropogenic nutrient inputs ... Fertilization experiments have established that seagrass growth in...

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...

Responses of seagrass to nutrients in the Great Barrier Reef, Australia

Responses of seagrass to nutrients in the Great Barrier Reef, Australia ... Declines in seagrass biomass and growth have been widely reported in response to anthropogenic impacts. In contrast, the distribution and bi...

Rise of Ruppia in Chesapeake Bay: Climate change–driven turnover of foundation species creates new threats and management opportunities

...mical water quality data with species compre- hensive aerial surveys to describe causes and consequences of turnover in seagrass foundation species across 26,000 ha of habitat in the Chesapeake Bay. Repeated marine heatwaves have caused 54% retract...

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...

Role of Seagrass Photosynthesis in Root Aerobic Processes

Role of Seagrass Photosynthesis in Root Aerobic Processes ... Role of Seagrass Photosynthesis in Root Aerobic Processes ... Bill Dennison ... Smith RD, Dennison WC, and Alberte RS...

Seagrass and sediment nutrients: Species comparison and fertilisation responses of P. australis at Rottnest Island, Western Australia

Seagrass and sediment nutrients: Species comparison and fertilisation responses of P. australis at Rottnest Island, Western Aust...

Seagrass ecosystem trajectory depends on the relative timescales of T resistance, recovery and disturbance

Seagrass ecosystem trajectory depends on the relative timescales of T resistance, recovery and disturbance ... Seagrass ecosystems are inherently dynamic, responding to environmental change across a range of scales. Habitat requirements of...

Seagrass habitats of Bocas del Toro province: a balance between river, mangrove and coral influences

Seagrass habitats of Bocas del Toro province: a balance between river, mangrove and coral influences ... This poster summarizes...

Seagrass survival during pulsed turbidity events: the effects of light deprivation on the seagrasses Halodule pinifolia and Halophila ovalis

Seagrass survival during pulsed turbidity events: the effects of light deprivation on the seagrasses Halodule pinifolia and Halophila ovalis ... Pulsed turbidity events caused by factors such as flooding rivers have th...

Seagrass survival model

Seagrass survival model ... Seagrass survival model ... Bill Dennison ... Dennison WC and Kirkman H...

Seagrass: A Hidden Treasure

Seagrass: A Hidden Treasure ... This brochure is part of a series of images, diagrams and fun facts produced by the Global Seagr...

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