Date of Award
1994
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Thesis/Dissertation Advisor [Chair]
Bourne, Godfrey R.
Thesis/Dissertation Co-Chair
Courtenay, Walter R. Jr.
Abstract
Small clear and blackwater streams of the neotropics are economically important because they may be nursery grounds for important food and aquarium fishes. At present, these ecosystems are being negatively impacted by current logging, and gold and diamond mining practices. Thus, the role of biotic and abiotic factors in fish community structure was examined in three unimpacted streams in Guyana, South America. These streams had relatively low fish species diversity, but complex feeding guild structure. No significant correlations between abiotic factors and fish species diversity and feeding guild diversity were determined due to small sample size. However, principal component analysis suggested an association between pH and species diversity, and conductivity and guild diversity. Biotic factors, such as competition and predation may be the primary determinant of fish community structure and organization in neotropical blackwater streams.
Extent
152 p.
Recommended Citation
Bergquist, Teresa Cecilia, "Fish community structure and organization in neotropical clear and blackwater streams in Guyana" (1994). Electronic Theses and Dissertations 1990 - 1999. 591.
https://digitalcommons.fau.edu/etd_general_4/591
Identifier
FADT15023
Comments
Charles E. Schmidt College of Science|Thesis (M.S.)--Florida Atlantic University, 1994.|FAU Electronic Theses and Dissertations Collection|Charles E. Schmidt College of Science