Free Content

Effects of Wind-Generated Coastal Currents on the Transport of Blue Crab Megalopae on a Shallow Continental Shelf

Authors: Blanton, J.; Wenner, E.; Werner, F.; Knott, D.

Source: Bulletin of Marine Science, Volume 57, Number 3, November 1995 , pp. 739-752(14)

Publisher: University of Miami - Rosenstiel School of Marine and Atmospheric Science

Buy & download fulltext article:

Free content The full text is free.

View now:
PDF 2,689.1kb 

Abstract:

We explore the role of wind-generated coastal circulation regimes on the transport of blue crab megalopae. While this role is examined in the light of past observations and model simulations on the continental shelf of the southeast U.S., the physical principles have general applicability to other coastal regions with broad shallow continental shelves. An examination of three years of blue crab settlement data reveal that major settling events occurred during upwelling, downwelling and calm winds. There was no correlation with spring tides. Shoreward advecting currents occur in both upwelling and downwelling circulation regimes, but their location in the water column differs. Moreover, the configuration of the coastal frontal zone can change after downwelling ceases and produce shoreward advection in the lower portions of the water column. Thus, shoreward advection of megalopae (and other larvae) depends on vertical position in the water column, a position sensitive to behavior and vertical mixing. Many scientists have sought correlations between factors associated with recruitment and physical parameters. This approach has obvious advantages as long as the physical model from which the parameters are derived is based on a precise assumptions about how the physical model works. Our work suggests that we must have equally precise assumptions for vertical migratory behavior before we can demonstrate that this correlative approach produces consistent results.

Document Type: Research Article

Publication date: November 1, 1995

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page