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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...

Lagoon scale processes in a coastally influenced Caribbean system: Implications for the seagrass Thalassia testudinum

Lagoon scale processes in a coastally influenced Caribbean system: Implications for the seagrass Thalassia testudinum ... The Bocas del Toro archipelago in the Caribbean sea on the northwest coast of Panama has high...

Influence of submarine springs and wastewater on nutrient dynamics of Caribbean seagrass meadows

Influence of submarine springs and wastewater on nutrient dynamics of Caribbean seagrass meadows ... The east coast of the Yucatan Peninsula, Mexico, consists of highly permeable limestone, such that surface...

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...

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...

Development of Indicators for Assessing and Monitoring Nutrient Influences in Coastal Waters

...oyed in this study included nitrogen stable isotope ratios (delta 15N) of natural marine flora communities (macroalgae, seagrasses and mangroves), which were used to infer nitrogen source and fate. In regions devoid of macrophytes, an active biolog...

Testing the sediment-trapping paradigm of seagrass: do seagrasses influence nutrient status and sediment structure in tropical intertidal environments?

Testing the sediment-trapping paradigm of seagrass: do seagrasses influence nutrient status and sediment structure in tropical intertidal environments? ... Seagrass meadows are consid...

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...

Assessing ecological impacts of shrimp and sewage effluent: Biological indicators with standard water quality analyses

...ing tissue nitrogen (N) content, stable isotope ratio of nitrogen (delta N-15) and amino acid composition of inhabitant seagrasses, mangroves and macroalgae. The study area consisted of two tidal creeks, one receiving effluent from a sewage treatme...

The impact of the herbicide diuron on photosynthesis in three species of tropical seagrass

The impact of the herbicide diuron on photosynthesis in three species of tropical seagrass ... The impact and recovery from exposure to the herbicide diuron [DCMU; 3-(3′,4′-dichlorophenyl)-1,1-dimethylurea] was...

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...

Effect of the seagrass Zostera capricorni on sediment microbial processes

Effect of the seagrass Zostera capricorni on sediment microbial processes ... The effect of the seagrass Zostera capricorni on sediment microbial processes was studied in a tank experiment, where vegetated and unvegetated co...

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 ....

Within canopy growth strategies of the two seagrass species Amphibolis griffithii (J. Black) den Hartog and Amphibolis antarctica (Labillardiere) Sonder & Ascherson ex Ascherson

Within canopy growth strategies of the two seagrass species Amphibolis griffithii (J. Black) den Hartog and Amphibolis antarctica (Labillardiere) Sonder...

Status of Australian seagrass research and knowledge

Status of Australian seagrass research and knowledge ... Status of Australian seagrass research and knowledge ... Bill Dennison ... Walker DI, Dennison WC, and Edgar G...

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...

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...

Seagrasses: angiosperms adapted to sea floors

Seagrasses: angiosperms adapted to sea floors ... Seagrasses: angiosperms adapted to sea floors ... Bill Dennison ... McComb AJ and Dennison WC...

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...

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...

Within canopy growth strategies of the two seagrass species Amphibolis griffithii (J. Black) den Hartog and Amphibolis antarctica (Labillardiere) Sonder & Ascherson ex Ascherson

Within canopy growth strategies of the two seagrass species Amphibolis griffithii (J. Black) den Hartog and Amphibolis antarctica (Labillardiere) Sonder...

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...

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...

Effects of light deprivation on the survival and recovery of the seagrass Halophila ovalis (RBr) Hook

Effects of light deprivation on the survival and recovery of the seagrass Halophila ovalis (RBr) Hook ... Survival and recovery of the seagrass Halophiln ovalis (R.Br.) Hook during and after li...

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...

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