Using SCUBA and Snorkeling Methods to Obstain Model Parameters for an Ecopath Network Model for Calabash Caye, Belize, Central America

Deehr, Rebecca A. and Barry, Deirdre B. and Chagaris, David D. and Luczkovich, Joseph J. (2007) Using SCUBA and Snorkeling Methods to Obstain Model Parameters for an Ecopath Network Model for Calabash Caye, Belize, Central America. [Other peer-reviewed publication]

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    Abstract

    We have been collecting biological data for the construction of a food web model of Calabash Caye, Belize using Ecopath with Ecosim software. Characterization of the mangrove seagrass and coral reef environments surrounding Calabash Caye will provide baseline data for a network model of the trophic relationships in this area, which is currently being considered as a marine protected area. Our Ecopath model follows a previously published Puerto Rico - Virgin Islands 50 - compartment model; 27 of the compartments represents fishes. The collection of fish biomass and abundance data was done using visual surveys with both SCUBA and snorkel. Important dietary information was gathered from fish collected using a small suction dredge and larger invertebrates were counted along visual transects using SCUBA and snorkeling. Additional data for various compartments that were not sampled, including birds, phytoplankton, benthic autotrophs and detritus, come from other Belizean or Caribbean studies and literature values. Abundance and biomass or all compartments were determined and converted to g wet weight.m-2 Selected Ecopath outputs, such as effective trophic levels and mixed trophic impacts, allow us to gain insight into trophic structure and how changes in biomass travel through the food web to affect other species. The model will enable Belizean scientists and managers to monitor and formulate predictions about potential ecosystem changes that are associated with the marine reserve.

    Item Type: Other peer-reviewed publication
    Related URLs:
      Publisher: American Academy of Underwater Sciences
      Subjects: (A) Biodiversity > (AC) Fish > (ACB) Marine
      (C) Ecosystems > (CB) Marine > (CBA) Coral Reefs
      (H) Protected Areas > (HD) Marine Reserve
      Publication Sources: (3) Other Source > (3B) NGOs
      Date Deposited: 25 Jul 2014 09:39
      Last Modified: 25 Jul 2014 09:39
      URI: http://eprints.uberibz.org/id/eprint/1447

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