projects > spatial and age-structured population model of the american crocodile for comparisons of CERP restoration alternatives > project summary
Project Summary Sheet
Fiscal Year 2007 Project Summary Report
Project Title: Spatial and Age-Structured Population Model of the American Crocodile for Comparisons of CERP Restoration Alternatives
Associated / Linked Projects: GEPES study: American Alligator Ecology and Monitoring for CERP
Overview & Objective(s): Many important questions concerning the effects of Everglades restoration on crocodile remain unanswered such as the impacts of decompartmentalization and the effects of hydrology and salinity on population distribution and density. Also, we need to develop a population model for use in restoration alternative selection, performance measure development, and prediction. To adequately understand crocodile populations and model their population growth and distribution, existing data must be assembled and model parameters estimated. A simulation model can then be constructed and validated both with existing data and through expert opinion. A crocodile population model to simulate the south Florida ecosystem under varying management strategies is vital to evaluating and assessing restoration success under CERP.
The objectives of this project are to:
Status: The crocodile model will be based on the ATLSS Alligator Population Model, which has been completed and has undergone expert review, calibration, and some validation. A GS-9 Ecologist was hired late in FY-2007 to work on this task. He has begun training in Matlab programming, and is reviewing the alligator model. Meetings with crocodilian biologists are planned for the near future to outline changes that need to be made from the alligator model, and to begin parameterization of the crocodile model.
Recent & Planned Products:
Specific Relevance to Information Needs Identified in DOI's Science Plan in Support of Ecosystem Restoration, Preservation, and Protection in South Florida (DOI's Everglades Science Plan): [See Plan on SOFIA's Web site: http://sofia.usgs.gov/publications/reports/doi-science-plan/]:
The spatially explicit, stage-based model of American crocodile populations will address identified needs in the DOI science plan, including:
This is a new project and is still in the beginning phases. Expected findings include a better understanding of the role of salinity and hydroperiod on the population structure and distribution of crocodiles in south Florida, and the expected effect of CERP restoration alternatives on crocodiles.
U.S. Department of the Interior, U.S. Geological Survey
This page is: http://sofia.usgs.gov/projects/summary_sheets07/model_croc.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 04 September, 2013 @ 02:08 PM(TJE)