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.

Crassostrea ariakensis: Panacea or Pandora? (Page 1)

Crassostrea ariakensis: Panacea or Pandora?

Adrian Jones, Tracey Saxby ·
1 March 2004

This newsletter is based on research conducted by Dr Mark Luckenbach and a presentation he gave at the Chesapeake Bay Seminar Series in July 2003. The introduction of Crassostrea ariakensis into Chesapeake Bay has been proposed for both economic and ecological gain. Data exists suggesting that C. ariakensis grows significantly faster and is more resistant to the diseases that have devastated the native oyster.

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Nutrient Management of Delmarva Soils & Waters (Page 1)

Nutrient Management of Delmarva Soils & Waters

Jane Thomas ·
1 March 2004

This newsletter is based on the 'Status of nutrients in Delmarva soils, groundwaters, creeks and tributaries forum', October 21, 2003. Extensive poultry operations and associated feed grain production on the Delmarva Peninsula have resulted in elevated nutrient levels in soils, groundwater, creeks and tributaries of the Chesapeake Bay.

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Developing a Chesapeake Bay Report Card (Page 1)

Developing a Chesapeake Bay Report Card

Adrian Jones, Bill Dennison, Jane Thomas ·
29 January 2004

This poster details the importance of developing a scientifically rigorous, spatially explicit ecosystem health report card on Chesapeake Bay and its watershed to facilitate coordination and feedback between monitoring, management and research. A pilot study was conducted in July 2003 on the Patuxent and Choptank Rivers using a novel stable isotope technique (see "Assessing Nutrient Sources" newsletter below) together with more traditional water quality monitoring techniques.

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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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Effects of land-use change on solute fluxes to floodplain lakes of the central Amazon

Williams MR, Filoso S, and Lefebvre P ·
2004

A time-series analysis of airborne photographs and Landsat thematic mapper (TM and ETM+) images and hydrochemical data were used to examine the effects of land-use change from 1930 to 2001 on solute inputs to Lake Calado, a floodplain lake in the central Amazon. Deforestation from slash-and-burn agricultural activities has dramatically decreased the amount of primary growth upland and flooded forests in the basin.

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Nitrogen ecophysiology of Heron Island, a subtropical coral cay of the Great Barrier Reef, Australia (Page 1)

Nitrogen ecophysiology of Heron Island, a subtropical coral cay of the Great Barrier Reef, Australia

Schmidt S, Dennison WC, Moss GJ, and Stewart GR ·
2004

Coral cays form part of the Australian Great Barrier Reef. Coral cays with high densities of seabirds are areas of extreme nitrogen (N) enrichment with deposition rates of up to 1000 kg N ha(-1) y(-1). The ways in which N sources are utilised by coral cay plants, N is distributed within the cay, and whether or not seabird-derived N moves from cay to surrounding marine environments were investigated.

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