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Estuaries

, Volume 7, Issue 1, pp 70–92 | Cite as

The nursery role of seagrass meadows in the upper and lower reaches of the Chesapeake Bay

  • Kenneth L. Heck
  • Timothy A. Thoman
Article

Abstract

A two-year trawling and gill-netting study of vegetated and unvegetated bottoms near Parson’s Island, Maryland and near the mouth of the York River, Virginia was carried out to assess the nursery function of submerged vegetation for populations of fishes and decapod crustaceans in the Chesapeake Bay. Results revealed that vegetated bottoms supported substantially larger numbers of decapods, but not fishes, than unvegetated substrates. The lower Bay grassbed was an important nursery area for juvenile blue crabs, although neither of the grassbeds functioned as a nursery for commercially or recreationally valuable fishes. Our results suggest that: (1) further decreases in lower Bay Seagrass biomass would result in reduced numbers of adult blue crabs, but should not substantially affect populations of valuable fish species; (2) additional decreases in Upper Bay submerged vegetation should not produce dramatic change in the population sizes of either adult blue crabs or fishes.

Keywords

Blue Crab Submerged Aquatic Vegetation Seagrass Meadow Carapace Width Grass Shrimp 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature Cited

  1. Adams, S. M. 1976. The ecology of eelgrass,Zostera marina (L.) fish communities. I. Structural analysis.J. Exp. Mar. Biol. Ecol. 22:269–291.CrossRefGoogle Scholar
  2. Eberhardt, L. L. 1976. Quantitative ecology and impact assessment.J. Environ. Manage. 4:27–70.Google Scholar
  3. Heck, K. L. Jr., andR. J. Orth. 1980. Structural components of eelgrass (Zostera marina) meadows in the lower Chesapeake Bay—Decapod crustaceans.Estuaries 3:289–295.CrossRefGoogle Scholar
  4. Heck, K. L. Jr., andT. A. Thoman. 1981. Experiments on predator-pray interactions in vegetated aquatic habitats.J. Exp. Mar. Biol. Ecol. 53:125–134.CrossRefGoogle Scholar
  5. Heck, K. L., and R. Horwitz. (in press). Statistical analysis of sampling data to assess impact in marine environments.In H. White (ed.) Concepts in Marine Pollution Measurements. University of Maryland Press, College Park, Maryland.Google Scholar
  6. Hooks, T. A., K. L. Heck Jr., andR. J. Livingston. 1976. An inshore marine invertebrate community: Structure and habitat associations in, the northeastern Gulf of Mexico.Bull. Mar. Sci. 26:99–109.Google Scholar
  7. Nelson, W. G. 1979. Experimental studies of selective predation on amphipods: consequences for amphipod distribution and abundance.J. Exp. Mar. Biol. Ecol. 38:255–45.CrossRefGoogle Scholar
  8. Nelson, W. G. 1981. Experimental studies of decapod and fish predation on seagrass macrobenthos.Mar. Ecol. Progr. Ser. 5:141–149.CrossRefGoogle Scholar
  9. Orth, R. J. 1975. The role of disturbance in an eelgrass,Zostera marina, community. Ph.D. Dissertation, Univ. of Maryland. 116 p.Google Scholar
  10. Orth, R. 1976. The demise and recovery of eelgrass,Zostera marina, in the Chesapeake Bay, Virginia.Aquat. Bot. 2:141–159.CrossRefGoogle Scholar
  11. Orth, R. J., andK. L. Heck, Jr. 1980. Structural components of eelgrass meadows in the lower Chesapeake Bay—Fishes.Estuaries 3:278–288.CrossRefGoogle Scholar
  12. Orth, R. J., and J. von Montfrans. 1982. Structural and functional aspects of the biology of submerged aquatic macrophyte communities in the lower Chesapeake Bay. Vol., II. Va. Inst. Mar. Sci. (VIMS) Spec. Report No. 267. 232 p.Google Scholar
  13. Penry, D. L. 1982. Utilization of aZostera marina andRuppia maritima habitat by four decapods with emphasis onCallinectes sapidus M.S. Thesis, Colege of William and Mary, Williamsburg, Virginia. 100 p.Google Scholar
  14. Tabb, D. C., D. Dubrow, andR. Manning 1962. The ecology of northern Florida Bay and adjacent estuaries.Tech. Ser Fla. St. Bd. Conserv. 39:1–79.Google Scholar
  15. Thayer, G. W., andR. C. Phillips. 1977. Importance of eelgrass beds in Puget Sound.Mar. Fish. Rev. 39:18–22.Google Scholar
  16. Van Engel, W. 1958. The blue crab and its fishery in Chesapeake Bay.Commer. Fish. Rev. 20:6–17.Google Scholar
  17. Weinstein, M. P. 1979. Shallow marsh habitats as primary nurseries for fishes and shellfish, Cape Fear River, North Carolina.Fish. Bull. 77:339–358.Google Scholar
  18. Weinstein, M. P., andK. L. Heck, Jr. 1979. Ichthyofauna of seagrass meadows along the Caribbean west of Panamá and the Gulf of Mexico: composition, structure and community ecology.Mar. Biol. 50:97–107.CrossRefGoogle Scholar

Copyright information

© Estuarine Research Federation 1984

Authors and Affiliations

  • Kenneth L. Heck
    • 1
  • Timothy A. Thoman
    • 2
  1. 1.Division of Environmental ResearchAcademy of Natural Sciences of PhiladelphiaPhiladelphia
  2. 2.Benedict Estuarine Research LaboratoryAcademy of Natural Sciences of PhiladelphiaBenedict

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