IAN is committed to producing practical, user-centered communications that foster a better understanding of science and enable readers to pursue new opportunities in research, education, and environmental problem-solving. Our publications synthesize scientific findings using effective science communication techniques.

Environmental Management of Aquaculture Effluent: Development of Biological Indicators and Biological Filters (Page 1)

Environmental Management of Aquaculture Effluent: Development of Biological Indicators and Biological Filters

Jones AB ·
1999

Rapid global expansion of the aquaculture industry has prompted the need for development of techniques for effective environmental management. In intensively farmed regions, aquaculture effluent has resulted in environmental degradation of receiving waters. The issues to be addressed include analysis of effluent water quality, determination of the ecological impact of effluent on the ecosystem, and development of remediation strategies to reduce these impacts.

Read more

Responses of seagrass to nutrients in the Great Barrier Reef, Australia (Page 1)

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

Udy JW, Dennison WC, Long WJL, and McKenzie LJ ·
1999

Declines in seagrass biomass and growth have been widely reported in response to anthropogenic impacts. In contrast, the distribution and biomass of seagrass in the carbonate sediment around Green Island reef, part of Australia's Great Barrier Reef (GBR), has measurably increased during the past 50 yr, possibly due to increases in the availability of nutrients from local and regional anthropogenic sources.

Read more

Seagrass and sediment nutrients: Species comparison and fertilisation responses of P. australis at Rottnest Island, Western Australia (Page 1)

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

Udy JW and Dennison WC ·
1999

Seagrasses, marine angiospenns with high rates of primacy productivity, are often hmned by the supply of nutrients or light. We investigated the ambient sedirncnt nutrient availability, biornass, growth and physiological characteristics of five seagrass species common around Rottnest lsland (P. australis, P. sinuosa, A. antarctica, A. griffithii and H. ovalis).

Read more

Seagrass survival during pulsed turbidity events: the effects of light deprivation on the seagrasses Halodule pinifolia and Halophila ovalis (Page 1)

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

Longstaff BJ and Dennison WC ·
1999

Pulsed turbidity events caused by factors such as flooding rivers have the potential to seriously impact seagrass communities by depriving the plants of all available light. The effects of light deprivation was investigated on the survival, morphology and physiology of the tropical seagrasses Halodule pinifolia and Halophila ovalis growing in the South-East Gulf of Carpentaria, Australia, a region where pulsed flood events are common.

Read more

Sensitivity of transects across a depth gradient to measuring changes in aerial coverage and abundance of Ruppia megacarpa Mason (Page 1)

Sensitivity of transects across a depth gradient to measuring changes in aerial coverage and abundance of Ruppia megacarpa Mason

Carruthers TJB and Walker DI ·
1999

Effective management of estuarine systems that contain submerged aquatic macrophytes, requires knowledge of whether macrophyte populations are stable, increasing or decreasing in terms of aerial coverage and abundance. This study established three transects within Wilson Inlet and monitored them five times during 1996 for percent cover of Ruppia megacarpa and maximum depth limits of these meadows.

Read more

Sydney rock oyster, Saccostrea commercialis (Iredale & Roughley), filtration of shrimp farm effluent: the effects on water quality (Page 1)

Sydney rock oyster, Saccostrea commercialis (Iredale & Roughley), filtration of shrimp farm effluent: the effects on water quality

Jones AB and Preston NP ·
1999

Shrimp pond effluent water can contain higher concentrations of dissolved nutrients and suspended particulates than the influent water. Consequently, there are concerns about adverse environmental impacts on coastal waters caused by eutrophication and increased turbidity. One potential method of improving effluent water quality prior to discharge or recirculation is to use bivalves to filter the effluent.

Read more