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.

“This is your shield… this is your estuary” Building community and coastal resilience to a changing Louisiana coastline through restoration of key ecosystem functions (Page 1)

“This is your shield… this is your estuary” Building community and coastal resilience to a changing Louisiana coastline through restoration of key ecosystem functions

Carruthers TJB, Hemmerling SA, Barra M, Saxby TA, Moss L ·
30 March 2017

The coastal communities of Louisiana are highly vulnerable to coastal change, and the potential benefits of protecting, restoring, and enhancing intact ecosystems are particularly important. However, there is a current lack of synthesized information on potential benefits of ecosystem-based restoration options at a parish, basin, or coastwide scale.

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Report cards and system dynamics modelling (Page 1)

Report cards and system dynamics modelling

Simon Costanzo, Bill Dennison, Alexandra Fries, Heath Kelsey, Dave Nemazie, Vanessa Vargas-Nguyen, Emily Nastase ·
23 March 2017

This newsletter summarizes the outcomes of a workshop exploring the linkages and potential benefits of combining river basin health report cards and system dynamics modelling. These two approaches have traditionally been utilized separate from each other, however merging the two will lead to better management of the world's river basins.

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Building community and coastal resilience to a changing Louisiana coastline through restoration of key ecosystem functions (Page 1)

Building community and coastal resilience to a changing Louisiana coastline through restoration of key ecosystem functions

This is your shield... this is your estuary

Carruthers TJB, Hemmerling SA, Barra M, Saxby TA, Moss L ·
1 March 2017

The coastal communities of Louisiana are highly vulnerable to coastal change, yet the population has remained steady in the midst of highly dynamic environmental, social, and economic conditions. Adaptations in the form of social networks, mobility, and ingenuity have enabled Louisiana’s coastal communities to remain viable, although changed over time. Much of Louisiana’s coastal zone is outside of the current system of hard infrastructure (primarily levee) protection.

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Ecological Drought in the Southeast United States (Page 1)

Ecological Drought in the Southeast United States

Brianne Walsh, Simon Costanzo, Bill Dennison ·
24 February 2017

The Department of the Interior Climate Science Centers (CSCs) and their managing organization, the National Climate Change and Wildlife Science Center at the U.S. Geological Survey, have chosen the emerging climate science field of Ecological Drought as a research focus area. This newsletter highlights the outcomes of a two-day workshop held in Raleigh, North Carolina as part of a series of meetings at each of the nation’s eight CSCs.

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Numerical and Qualitative Contrasts of Two Statistical Models for Water Quality Change in Tidal Waters (Page 1)

Numerical and Qualitative Contrasts of Two Statistical Models for Water Quality Change in Tidal Waters

Beck MW and Murphy RR ·
2017

Two statistical approaches, weighted regression on time, discharge, and season and generalized addi- tive models, have recently been used to evaluate water quality trends in estuaries. Both models have been used in similar contexts despite differences in statistical foundations and products. This study provided an empirical and qualitative comparison of both models using 29 years of data for two discrete time series of chlorophyll-a (chl-a) in the Patuxent River estuary.

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Improving riverine constituent concentration and flux estimation by accounting for antecedent discharge conditions (Page 1)

Improving riverine constituent concentration and flux estimation by accounting for antecedent discharge conditions

Zhang Q, Ball WP ·
2017

Regression-based approaches are often employed to estimate riverine constituent concentrations and fluxes based on typically sparse concentration observations. One such approach is the recently developed WRTDS (‘‘Weighted Regressions on Time, Discharge, and Season”) method, which has been shown to pro- vide more accurate estimates than prior approaches in a wide range of applications.

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Assessing water quality of the Chesapeake Bay by the impact of sea level rise and warming (Page 1)

Assessing water quality of the Chesapeake Bay by the impact of sea level rise and warming

Wang P,Linker L, Wang H, Bhatt G, Yactayo G, K Hinson K and Tian R ·
2017

The influence of sea level rise and warming on circulation and water quality of the Chesapeake Bay under projected climate conditions in 2050 were estimated by computer simulation. Four estuarine circulation scenarios in the estuary were run using the same watershed load in 1991-2000 period. They are, 1) the Base Scenario, which represents the current climate condition, 2) a Sea Level Rise Scenario, 3) a Warming Scenario, and 4) a combined Sea Level Rise and Warming Scenario.

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Multiple stressors threaten the imperiled coastal foundation species eelgrass (Zostera marina) in Chesapeake Bay, USA (Page 1)

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

Lefcheck JS, Wilcox DJ, Murphy RR, Marion SR, and Orth RJ ·
2017

Interactions among global change stressors and their effects at large scales are often proposed, but seldom evaluated. 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 most vulnerable habitats on the planet.

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Occurrence of antimicrobial resistant Escherichia coli in waterways of southeast Queensland, Australia (Page 1)

Occurrence of antimicrobial resistant Escherichia coli in waterways of southeast Queensland, Australia

Watkinson AJ, Micalizzi GB, Bates, and Costanzo SD ·
2017

Antimicrobial resistance is a global health issue. The discharge, maintenance and transfer of antimicrobial resistance to the aquatic environment and the risk this presents is relatively unknown. This work describes the presence and distribution of antimicrobial resistant Escherichia coli in surface waters of seven rivers in south east Queensland, Australia.

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