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.

Influence of submarine springs and wastewater on nutrient dynamics of Caribbean seagrass meadows (Page 1)

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

Carruthers TJB, van Tussenbroek BI, and Dennison WC ·
2005

The east coast of the Yucatan Peninsula, Mexico, consists of highly permeable limestone, such that surface flow and rivers are absent in this region. Extensive underground cave systems connect sink holes (cenotes) to submarine springs (ojos de aqua), which vent into the seagrass meadows of the adjacent oligotrophic coastal lagoons.

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Lagoon scale processes in a coastally influenced Caribbean system: Implications for the seagrass Thalassia testudinum (Page 1)

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

Carruthers TJB, Barnes PAG, Jacome GE, and Fourqurean JW ·
2005

The Bocas del Toro archipelago in the Caribbean sea on the northwest coast of Panama has high annual rainfall (> 3000 mm) and a mountainous watershed, resulting in high inflow of fresh water. The two main lagoons have different geologic structure and different inputs; while Bahia Almirante has carbonate sediment and a relatively small watershed, Laguna de Chiriqui has predominantly siliclastic sediment and a very large watershed.

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Modelling phytoplankton deposition to Chesapeake Bay sediments during winter-spring: interannual variability in relation to river flow

Hagy JD, Boynton WR, and Jasinski DA ·
2005

The often-rapid deposition of phytoplankton to sediments at the end of the spring phytoplankton bloom is an important component of benthic-pelagic coupling in temperate and high latitude estuaries and other aquatic systems. However, quantifying the flux is difficult, particularly in spatially heterogeneous environments.

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Organochlorine and heavy metal concentrations in blubber and liver tissue collected from Queensland (Australia) dugong (Dugong dugon) (Page 1)

Organochlorine and heavy metal concentrations in blubber and liver tissue collected from Queensland (Australia) dugong (Dugong dugon)

Haynes D, Carter S, Gaus C, Muller J, and Dennison WC ·
2005

Tissue samples of liver and blubber were salvaged from fifty-three dugong (Dugong dugon) carcasses stranded along the Queensland coast between 1996 and 2000. Liver tissue was analysed for a range of heavy metals and blubber samples were analysed for organochlorine compounds. Metal concentrations were similar in male and female animals and were generally highest in mature animals.

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Quantifying and evaluating ecosystem health: A case study from Moreton Bay, Australia (Page 1)

Quantifying and evaluating ecosystem health: A case study from Moreton Bay, Australia

Pantus FJ and Dennison WC ·
2005

As part of the program monitoring the ecosystem health of Moreton Bay, Queensland, Australia, we developed a means for assessing ecosystem health that allows quantitative evaluation and spatial representations of the assessments. The management objectives for achieving ecosystem health were grouped into ecosystem objectives, water quality objectives, and human health objectives.

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Seasonal and annual variability in the spatial patterns of plankton biomass in Chesapeake Bay

Roman M, Zhang X, McGilliard C, and Boicourt W ·
2005

We conducted high-resolution, underway sampling in April, July, and October for 6 yr (1995-2000) in the large estuary, Chesapeake Bay. This period included climatological extremes in freshwater inputs that strongly influenced both the overall stocks and spatial distribution of phytoplankton and zooplankton. Higher biomass of both phytoplankton and zooplankton occurred in springs, when freshwater input into Chesapeake Bay was above the average discharge.

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A comparison of issues and management approaches in Moreton Bay, Australia and Chesapeake Bay, USA (Page 1)

A comparison of issues and management approaches in Moreton Bay, Australia and Chesapeake Bay, USA

Dennison WC, Carruthers TJB, Thomas JE, and Glibert PM ·
2004

Management of coastal systems is becoming increasingly important, however understanding the process of effective management often remains elusive. This chapter contrasts examples of environmental problems and associated management in Moreton Bay, Australia, and Chesapeake Bay, USA. Targeted research in Moreton Bay identified specific issues which led to changed practices, while intense management and research in Chesapeake Bay has been unable to keep pace with increasing anthropogenic stress.

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Assessing photoinduced toxicity of polycyclic aromatic hydrocarbons in an urbanized estuary (Page 1)

Assessing photoinduced toxicity of polycyclic aromatic hydrocarbons in an urbanized estuary

Vo M, Porter DE, Chandler GT, Kelsey RH, Walker SP, and Jones BE ·
2004

Increases in contaminants associated with urban sprawl are a particular concern in the rapidly developing coastal areas of the southeastern United States. Polycyclic aromatic hydrocarbons (PAHs) are contaminants associated with vehicle emissions and runofff from impervious surfaces. Increased vehicular traffic and more impervious surfaces lead to an increased loading of PAHs into coastal estuarine systems.

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Combining Landsat ETM plus and Reef Check classifications for mapping coral reefs: A critical assessment from the southern Great Barrier Reef, Australia (Page 1)

Combining Landsat ETM plus and Reef Check classifications for mapping coral reefs: A critical assessment from the southern Great Barrier Reef, Australia

Joyce KE, Phinn SR, Roelfsema CM, Neil DT, and Dennison WC ·
2004

While the remote-sensing community attempts to find measures of reef ‘‘health’’ able to be detected and mapped using satellite image data, internationally recognized field assessments are already in place to document benthic cover, among other parameters, as an indicator of coral reef status. Reef Check is one such program, designed in 1996 as a globally applicable, rapid, field-survey protocol for coral reef health monitoring by volunteer divers (Hodgson 1999).

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