The Water Institute produces a range of scientific publications. In this way, we contribute to the state of the science, communicating cutting edge ideas to a broad technical audience.
High rates of organic carbon burial in fjord sediments globally
posted on 05.05.2015
Mead Allison, Author
The deposition and long-term burial of organic carbon in marine sediments has played a key role in controlling atmospheric O2 and CO2 concentrations over the past 500 million years. Marine carbon burial represents the dominant natural mechanism of long-term organic carbon sequestration. Fjords—deep, glacially carved estuaries at high latitudes—have been hypothesized to be hotspots of organic carbon burial, because they receive high rates of organic material fluxes from the watershed. Here we compile organic carbon concentrations from 573 fjord surface sediment samples and 124 sediment cores from nearly all fjord systems globally. We use sediment organic carbon content and sediment delivery rates to calculate rates of organic carbon burial in fjord systems across the globe. We estimate that about 18 Mt of organic carbon are buried in fjord sediments each year, equivalent to 11% of annual marine carbon burial globally. Per unit area, fjord organic carbon burial rates are twice as large as the global ocean average, and fjord sediments contain twice as much organic carbon as biogenous sediments underlying the upwelling regions of the ocean. We conclude that fjords may play an important role in climate regulation on glacial–interglacial timescales. Click here to view the full publication.
Riverside morphological response to pulsed sediment diversions
posted on 03.21.2017
Ehab Meselhe, et. al., Author
This paper in Geomorphology shows how researchers used numerical modeling of the lower Mississippi River informed by detailed field observations to produce information about how the riverbed changes in response to a diversion of large quantities of water and sediment. The study suggests that removing a significant amount of water through a diversion leads to the build of sediment near and downstream from the diversion.
Linking the bottom to the top in aquatic ecosystems: mechanisms and stressors of benthic-pelagic co
posted on 05.01.2015
Melissa Baustian , Author
Proposed best modeling practices for assessing the effects ofecosystem restoration on fish
posted on 03.17.2015
Denise Reed, Shaye Sable, et al., Author
Large-scale aquatic ecosystem restoration is increasing and is often controversial because of the economic costs involved, with the focus of the controversies gravitating to the modeling of fish responses. This paper presents a scheme for best practices in selecting, implementing, interpreting, and reporting of fish modeling designed to assess the effects of restoration actions on fish populations and aquatic food webs. Previous best practice schemes that tended to be more general are summarized, and they form the foundation for our scheme that is specifically tailored for fish and restoration. Click here to view the full publication.
An Overview of Cyberinfrastructure to Support the Coastal Modeling Community in the Gulf of Mexico
posted on 09.25.2014
Ehab Meselhe, Joao Pereira, Author
Twilley, R.R., S. Brandt, D. Breaux, J. Cartwright, J. Chen, G. Easson, P. Fitzpatrick, K. Fridley, S. Graves, S. Harper, C. Kaiser, A. Maestre, M. Maskey, W. McAnally, J. McCorquodale, E. Meselhe, T. Miller-Way, K. Park, J. Pereira, T. Richardson, J. Tao, A. Ward, J. Wiggert and D. Williamson. 2014. Simulation Management Systems developed by the Northern Gulf Coastal Hazards Collaboratory (NG-CHC): An overview of cyberinfrastructure to support the coastal modeling community in the Gulf of Mexico. Advances in Coastal and Marine Resources: Remote Sensing and Modeling edited by Charles W. Finkl, Antonio H.F. Klein, and Christopher Makowski. Coastal Research Library (CRL) series. To view this publication, click here.
Community Resettlement Prospects in Southeast Louisiana
posted on 09.23.2014
Scott Hemmerling, Author
Christopher Dalbom, Program Manager of the Tulane Institute on Water Resources Law & Policy; Scott A. Hemmerling, Associate Director of Human Dimensions of the Water Institute of the Gulf; and Joshua A. Lewis, Research Analyst, Tulane/Xavier Center for Bioenvironmental Research (2014). “Community Resettlement Prospects in Southeast Louisiana: A Multidisciplinary Exploration of Legal, Cultural, and Demographic Aspects of Moving Individuals and Communities.” An Issue Paper of the Tulane Institute on Water Resources Law & Policy. To view this publication click here.
Diversion of Mississippi River Water Downstream of New Orleans, La to Maximize Sediment Capture
posted on 08.20.2014
Mead Allison, Ehab Meselhe, Author
Allison, M.A., Ramirez, M.T., Meselhe, E.A. (2014) "Diversion of Mississippi River Water Downstream of New Orleans, Louisiana, USA to Maximize Sediment Capture and Ameliorate Coastal Land Loss," Water Resources Management, June 2014. To view this publication click here.
Bed Forms Resistance Dependency on Numerical Model Grid Size Spatial Resolution
posted on 08.22.2014
Ehab Meselhe, Author
El Kheiashy, K., McCorquodale, J., Georgiou, I., Meselhe, E. (2014). "Bed Forms Resistance Dependency on Numerical Model Grid Size Spatial Resolution," Journal of Spatial Science, April 2014.
Forecasting Landscape Effects of Mississippi River Diversions on Elevation and Accretion
posted on 08.22.2014
Ehab Meselhe, Mead Allison, Author
Wang, H., Steyer, G.D., Couvillion, B.R., Rybczyk, J.M., Beck, H.J., Sleavin, W.J., Meselhe, E.A., Allison, M.A., Boustany, R.G., Fischenich, C.J., Rivera-Monroy, V.H. (2014). "Forecasting Landscape Effects of Mississippi River Diversions on Elevation and Accretion in Louisiana Deltaic Wetlands under Future Environmental Uncertainty Scenarios," Estuarine, Coastal and Shelf Science, January 2014.
Coastal Ecosystems: A Critical Element of Risk Reduction
posted on 02.17.2014
Denise Reed, Author
Spalding, M.D., McIvor, A.L., Beck, M.W., Koch, E.W., Moller, I., Reed, D.J., Rubinoff, P., Spencer, T., Tolhurst, T.J., Wamsley, T.V., van Wesenbeeck, B.K., Wolanski, E., and Woodroffe, C.D. (2013) "Coastal Ecosystems: A Critical Element of Risk Reduction," Conservation Letters, November 2014. To view this publication click here.