Search Results - "Testa, Jeremy"

Biogeochemical Controls on Coastal Hypoxia by Fennel, Katja, Testa, Jeremy M

“…Aquatic environments experiencing low-oxygen conditions have been described as hypoxic, suboxic, or anoxic zones; oxygen minimum zones; and, in the popular…”
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Discerning effects of warming, sea level rise and nutrient management on long-term hypoxia trends in Chesapeake Bay by Ni, Wenfei, Li, Ming, Testa, Jeremy M.

“…Analyses of dissolved oxygen concentration in Chesapeake Bay over the past three decades suggested seasonally-dependent changes in hypoxic volume and an…”
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Patterns and Trends in Secchi Disk Depth over Three Decades in the Chesapeake Bay Estuarine Complex by Testa, Jeremy M., Lyubchich, Vyacheslav, Zhang, Qian

“…Water clarity is an important ecosystem indicator of eutrophication in Chesapeake Bay and other coastal and estuarine systems across the globe. Although a…”
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Interactions of warming and altered nutrient load timing on the phenology of oxygen dynamics in Chesapeake Bay by Basenback, Nicole, Testa, Jeremy M., Shen, Chunqi

“…The effects of nutrient loading on estuaries are well studied, given the multitude of negative water quality and ecosystem effects that have been attributed to…”
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Decoupling of Estuarine Hypoxia and Acidification as Revealed by Historical Water Quality Data by Shen, Chunqi, Testa, Jeremy M., Herrmann, Maria, Najjar, Raymond G.

“…Hypoxia and acidification are commonly coupled in eutrophic aquatic environments because aerobic respiration is usually dominant in bottom waters and can lower…”
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Natural and Anthropogenic Drivers of Acidification in Large Estuaries by Cai, Wei-Jun, Feely, Richard A, Testa, Jeremy M, Li, Ming, Evans, Wiley, Alin, Simone R, Xu, Yuan-Yuan, Pelletier, Greg, Ahmed, Anise, Greeley, Dana J, Newton, Jan A, Bednaršek, Nina

“…Oceanic uptake of anthropogenic carbon dioxide (CO 2 ) from the atmosphere has changed ocean biogeochemistry and threatened the health of organisms through a…”
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Interannual variability of air-water CO2 flux in a large eutrophic estuary by Shen, Chunqi, Testa, Jeremy M., Li, Ming, Chen, Baoshan, Cai, Wei-Jun

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Long-term nutrient reductions lead to the unprecedented recovery of a temperate coastal region by Lefcheck, Jonathan S., Orth, Robert J., Dennison, William C., Wilcox, David J., Murphy, Rebecca R., Keisman, Jennifer, Gurbisz, Cassie, Hannam, Michael, Landry, J. Brooke, Moore, Kenneth A., Patrick, Christopher J., Testa, Jeremy, Weller, Donald E., Batiuk, Richard A.

“…Humans strongly impact the dynamics of coastal systems, yet surprisingly few studies mechanistically link management of anthropogenic stressors and successful…”
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What drives interannual variability of hypoxia in Chesapeake Bay: Climate forcing versus nutrient loading? by Li, Ming, Lee, Younjoo J., Testa, Jeremy M., Li, Yun, Ni, Wenfei, Kemp, W. Michael, Di Toro, Dominic M.

“…Oxygen depletion in estuaries is a worldwide problem with detrimental effects on many organisms. Although nutrient loading has been stabilized for a number of…”
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Modeling Impacts of Nutrient Loading, Warming, and Boundary Exchanges on Hypoxia and Metabolism in a Shallow Estuarine Ecosystem by Testa, Jeremy M., Basenback, Nicole, Shen, Chunqi, Cole, Kelly, Moore, Amanda, Hodgkins, Casey, Brady, Damian C.

“…We sought to investigate the impacts of nutrient loading, warming, and open‐water boundary exchanges on a shallow estuary through idealized numerical model…”
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Decadal Changes in Water Quality and Net Productivity of a Shallow Danish Estuary Following Significant Nutrient Reductions by Staehr, Peter A., Testa, Jeremy, Carstensen, Jacob

“…We utilized an extensive data set (1977-2013) from a water quality monitoring program to investigate the recovery of a Danish estuary following large…”
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Controls on Water-Column Respiration Rates in a Coastal Plain Estuary: Insights from Long-Term Time-Series Measurements by Prichett, David, Bonilla Pagan, Joan M., Hodgkins, Casey L. S., Testa, Jeremy M.

“…Rates of ecosystem metabolic properties, such as plankton community respiration, can be used as an assessment of the eutrophication state of a waterbody and…”
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Redox reactions and weak buffering capacity lead to acidification in the Chesapeake Bay by Cai, Wei-Jun, Huang, Wei-Jen, Luther, George W., Pierrot, Denis, Li, Ming, Testa, Jeremy, Xue, Ming, Joesoef, Andrew, Mann, Roger, Brodeur, Jean, Xu, Yuan-Yuan, Chen, Baoshan, Hussain, Najid, Waldbusser, George G., Cornwell, Jeffrey, Kemp, W. Michael

“…The combined effects of anthropogenic and biological CO 2 inputs may lead to more rapid acidification in coastal waters compared to the open ocean. It is less…”
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Nutrient limitation of phytoplankton in Chesapeake Bay: Development of an empirical approach for water-quality management by Zhang, Qian, Fisher, Thomas R., Trentacoste, Emily M., Buchanan, Claire, Gustafson, Anne B., Karrh, Renee, Murphy, Rebecca R., Keisman, Jennifer, Wu, Cuiyin, Tian, Richard, Testa, Jeremy M., Tango, Peter J.

“…•CART models were developed to predict nutrient limitation in Chesapeake Bay.•The approach satisfactorily reproduced bioassay-based nutrient limitation…”
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Copepod habitat suitability estimates vary among oxygen metrics in Chesapeake Bay by Pierson, James J, Testa, Jeremy M, Roman, Michael R

“…Abstract Seasonal deoxygenation in coastal and estuarine systems leads to decreased available habitat for many planktonic organisms. However, the volume of…”
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Influences of a River Dam on Delivery and Fate of Sediments and Particulate Nutrients to the Adjacent Estuary: Case Study of Conowingo Dam and Chesapeake Bay by Palinkas, Cindy M., Testa, Jeremy M., Cornwell, Jeffrey C., Li, Ming, Sanford, Lawrence P.

“…Dams impact the magnitude and nature of material transport through rivers to coastal waters, initially trapping much material in upstream reservoirs. As…”
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A hydrodynamic model–based approach to assess sampling approaches for dissolved oxygen criteria in the Chesapeake Bay by Liang, Dong, Testa, Jeremy M., Harris, Lora A., Boynton, Walter R.

“…Technological advances in water quality measurement systems have provided the potential to expand high-frequency observations into coastal monitoring programs…”
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Chesapeake Bay acidification buffered by spatially decoupled carbonate mineral cycling by Su, Jianzhong, Cai, Wei-Jun, Brodeur, Jean, Chen, Baoshan, Hussain, Najid, Yao, Yichen, Ni, Chaoying, Testa, Jeremy M., Li, Ming, Xie, Xiaohui, Ni, Wenfei, Scaboo, K. Michael, Xu, Yuan-yuan, Cornwell, Jeffrey, Gurbisz, Cassie, Owens, Michael S., Waldbusser, George G., Dai, Minhan, Kemp, W. Michael

“…Uptake of anthropogenic carbon dioxide (CO 2 ) from the atmosphere has acidified the ocean and threatened the health of marine organisms and their ecosystems…”
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Ecological Forecasting and the Science of Hypoxia in Chesapeake Bay by TESTA, JEREMY M., CLARK, J. BLAKE, DENNISON, WILLIAM C., DONOVAN, E. CAROLINE, FISHER, ALEXANDER W., NI, WENFEI, PARKER, MATTHEW, SCAVIA, DONALD, SPITZER, SUZANNE E., WALDROP, ANTHONY M., VARGAS, VANESSA M.D., ZIEGLER, GREGORY

“…Chronic seasonal low oxygen condition (hypoxia) occurs in the deep waters of Chesapeake Bay as a result of eutrophication-induced phytoplankton blooms and…”
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The metabolism of aquatic ecosystems: history, applications, and future challenges by Staehr, Peter A., Testa, Jeremy M., Kemp, W. Michael, Cole, Jon J., Sand-Jensen, Kaj, Smith, Stephen V.

“…Measurements of the production and consumption of organic material have been a focus of aquatic science for more than 80 years. Over the last century, a…”
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