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.

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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An improved method for interpretation of riverine concentration-discharge relationships indicates long-term shifts in reservoir sediment trapping (Page 1)

An improved method for interpretation of riverine concentration-discharge relationships indicates long-term shifts in reservoir sediment trapping

Zhang Q, Harman CJ, and Ball WP ·
2016

Derived from river monitoring data, concentration-discharge (C-Q) relationships are powerful indicators of export dynamics. Proper interpretation of such relationships can be made complex, however, if the ln(C)-ln(Q) relationships are nonlinear or if the relationships change over time, season, or discharge. Methods of addressing these issues by “binning” data can introduce artifacts that obscure underlying interactions among time, discharge, and season.

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Decadal-scale export of nitrogen, phosphorus, and sediment from the Susquehanna River basin, USA: Analysis and synthesis of temporal and spatial patterns (Page 1)

Decadal-scale export of nitrogen, phosphorus, and sediment from the Susquehanna River basin, USA: Analysis and synthesis of temporal and spatial patterns

Zhang Q, Ball WP, and Moyer DL ·
2016

The export of nitrogen (N), phosphorus (P), and suspended sediment (SS) is a long-standing management con- cern for the Chesapeake Bay watershed, USA. Here we present a comprehensive evaluation of nutrient and sed- iment loads over the last three decades at multiple locations in the Susquehanna River basin (SRB), Chesapeake's largest tributary watershed.

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Effects of cross-channel bathymetry and wind direction on destratification and hypoxia reduction in the Chesapeake Bay (Page 1)

Effects of cross-channel bathymetry and wind direction on destratification and hypoxia reduction in the Chesapeake Bay

Wang P, Wang H, Linker L, and Tian R ·
2016

A coupled estuarine hydrodynamic model and water quality model were used to analyze differences in destratification and anoxia/hypoxia reduction by wind directions in the north-south oriented Chesapeake estuary, USA. The predominant cross-channel bathymetry in the Bay's anoxic center is asymmetric with a steeper and narrower shoal on the eastern shore than on the western shore, which modifies wind-induced circulation differently for two opposite wind directions.

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Influence of Reservoir Infill on Coastal Deep Water Hypoxia (Page 1)

Influence of Reservoir Infill on Coastal Deep Water Hypoxia

Linker LC, Batiuk RA, Cerco CF, Shenk GW, Tian R, Wang P, and Yactayo G ·
2016

Ecological restoration of the Chesapeake through the Chesapeake Bay total maximum daily load (TMDL) requires the reduction of nitrogen, phosphorus, and sediment loads in the Chesapeake watershed because of the tidal water quality impairments and damage to living resources they cause. Within the Chesapeake watershed, the Conowingo Reservoir has been filling in with sediment for almost a century and is now in a state of near-full capacity called dynamic equilibrium.

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Long-Term Changes in Sediment and Nutrient Delivery from Conowingo Dam to Chesapeake Bay: Effects of Reservoir Sedimentation (Page 1)

Long-Term Changes in Sediment and Nutrient Delivery from Conowingo Dam to Chesapeake Bay: Effects of Reservoir Sedimentation

Qian Zhang, Robert M. Hirsch, and William P. Ball ·
2016

Reduction of suspended sediment (SS), total phosphorus (TP), and total nitrogen is an important focus for Chesapeake Bay watershed management. The Susquehanna River, the bay’s largest tributary, has drawn attention because SS loads from behind Conowingo Dam (near the river’s mouth) have been rising dramatically. To better understand these changes, we evaluated histories of concentration and loading (1986−2013) using data from sites above and below Conowingo Reservoir.

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Discerning the Causes of Toxic Cyanobacteria (Lyngbya majuscula) Blooms in Moreton Bay, Australia (Page 1)

Discerning the Causes of Toxic Cyanobacteria (Lyngbya majuscula) Blooms in Moreton Bay, Australia

O'Neil JM and Dennison WC ·
2016

This book highlights perspectives, insights, and data in the coupled fields of aquatic microbial ecology and biogeochemistry when viewed through the lens of collaborative duos – dual career couples. Their synergy and collaborative interactions have contributed substantially to our contemporary understanding of pattern, process and dynamics. This is thus a book by dual career couples about dual scientific processes.

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