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David A Hewitt, Ph.D.

David Hewitt is a Research Ecologist at the Wetland and Aquatic Research Center. Previously, David was a Research Fish Biologist at the Western Fisheries Research Center where he provided guidance for the research and monitoring program for two endangered catostomids in the Upper Klamath Basin of Oregon and California. 

 

Related Content:

Hewitt, D. A., V. N. Ut, M. E. Andersen, J. W. Beeman, H. C. Patricio, S. M. Ainsley, S. Ounboundisane, D. Demko, and C. Conzelmann. 2015. Collaborative research of Mekong River fishes. Global Conference on Inland Fisheries, FAO, Rome, Italy. [Poster]

Education and Certifications

  • Ph.D. 2009. Marine Science (Fisheries Science/Crustacean Ecology), Virginia Institute of Marine Science, College of William and Mary, Advisor: Dr. Rom Lipcius

  • M.S. 2003. Fisheries and Wildlife Sciences (Minor in Statistics), North Carolina State University, Department of Zoology, North Carolina Cooperative Fish and Wildlife Research Unit, Advisor: Hightower

  • B.S. 2000. Fisheries Science, Virginia Tech, Department of Fisheries and Wildlife Sciences, College of Natural Resources, Blacksburg, VA

Science and Products

Filter Total Items: 32

Maintaining the competitiveness of the American fisheries society journals: an assessment based on influence and cost-effectiveness Maintaining the competitiveness of the American fisheries society journals: an assessment based on influence and cost-effectiveness

Recent changes in the landscape of scientific publishing prompted the Publications Overview Committee of the American Fisheries Society (AFS) to review the Society's portfolio of scientific journals. We evaluated journals based on metrics in two categories: (1) citation-based measures of the influence of a journal on the scientific literature, and (2) measures of the cost-effectiveness...
Authors
David A. Hewitt, Jason S. Link, Dave R. Steinich, David H. Wahl, Martha E. Mather
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Direct and indirect estimates of natural mortality for Chesapeake Bay blue crab Direct and indirect estimates of natural mortality for Chesapeake Bay blue crab

Analyses of the population dynamics of blue crab Callinectes sapidus have been complicated by a lack of estimates of the instantaneous natural mortality rate (M). We developed the first direct estimates of M for this species by solving Baranov's catch equation for M given estimates of annual survival rate and exploitation rate. Annual survival rates were estimated from a tagging study on...
Authors
D.A. Hewitt, D.M. Lambert, J.M. Hoenig, Romuald N. Lipcius, D.B. Bunnell, T.J. Miller
By
Ecosystems Mission Area, Great Lakes Science Center, Chesapeake Bay Activities

Non-USGS Publications**

Hewitt, D. A., and J. M. Hoenig. 2005. Comparison of two approaches for estimating natural mortality based on longevity. Fishery Bulletin 103(2):433-437.
Hoenig, J. M., and D. A. Hewitt. 2005. What can we learn about mortality from sex ratio data? A look at lumpfish in Newfoundland. Transactions of the American Fisheries Society 134:754-761. [Note the two important errata appended to the file.]
Hewitt, D. A., W. E. Pine, III, and A. V. Zale, editors. 2006. The AFS Guide to Fisheries Employment, 2nd Edition. American Fisheries Society, Bethesda, Maryland. (Available through the AFS online bookstore.)
Hewitt, D.A., D.M. Lambert, J.M. Hoenig, R.N. Lipcius, D.B. Bunnell, and T.J. Miller. 2007. Direct and Indirect Estimates of Natural Mortality for Chesapeake Bay Blue Crab. Transactions of the American Fisheries Society, 136(4): 1030-1040.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

Science and Products

Filter Total Items: 32

Maintaining the competitiveness of the American fisheries society journals: an assessment based on influence and cost-effectiveness Maintaining the competitiveness of the American fisheries society journals: an assessment based on influence and cost-effectiveness

Recent changes in the landscape of scientific publishing prompted the Publications Overview Committee of the American Fisheries Society (AFS) to review the Society's portfolio of scientific journals. We evaluated journals based on metrics in two categories: (1) citation-based measures of the influence of a journal on the scientific literature, and (2) measures of the cost-effectiveness...
Authors
David A. Hewitt, Jason S. Link, Dave R. Steinich, David H. Wahl, Martha E. Mather
By
Ecosystems Mission Area, Western Fisheries Research Center, Klamath Falls Field Station (KFFS)

Direct and indirect estimates of natural mortality for Chesapeake Bay blue crab Direct and indirect estimates of natural mortality for Chesapeake Bay blue crab

Analyses of the population dynamics of blue crab Callinectes sapidus have been complicated by a lack of estimates of the instantaneous natural mortality rate (M). We developed the first direct estimates of M for this species by solving Baranov's catch equation for M given estimates of annual survival rate and exploitation rate. Annual survival rates were estimated from a tagging study on...
Authors
D.A. Hewitt, D.M. Lambert, J.M. Hoenig, Romuald N. Lipcius, D.B. Bunnell, T.J. Miller
By
Ecosystems Mission Area, Great Lakes Science Center, Chesapeake Bay Activities

Non-USGS Publications**

Hewitt, D. A., and J. M. Hoenig. 2005. Comparison of two approaches for estimating natural mortality based on longevity. Fishery Bulletin 103(2):433-437.
Hoenig, J. M., and D. A. Hewitt. 2005. What can we learn about mortality from sex ratio data? A look at lumpfish in Newfoundland. Transactions of the American Fisheries Society 134:754-761. [Note the two important errata appended to the file.]
Hewitt, D. A., W. E. Pine, III, and A. V. Zale, editors. 2006. The AFS Guide to Fisheries Employment, 2nd Edition. American Fisheries Society, Bethesda, Maryland. (Available through the AFS online bookstore.)
Hewitt, D.A., D.M. Lambert, J.M. Hoenig, R.N. Lipcius, D.B. Bunnell, and T.J. Miller. 2007. Direct and Indirect Estimates of Natural Mortality for Chesapeake Bay Blue Crab. Transactions of the American Fisheries Society, 136(4): 1030-1040.

**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

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