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Species Diversity and Distribution of Fish in Lake Nicaragua

By Kurt W. Koenig, Richard J. Beatty, Sergio Martinez C.

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Abstract

The results of a preliminary study of the abundance, diversity and distribution of some of the fish species in Lake Nicaragua are presented here. These parameters have received little attention from investigators working on the lake.
A frequently used measure of species diversity is the Shannon-Weiner diversity index. It measures the degree of uncertainty of predicting the species identity of a randomly selected individual (Pielou, 1966). Lloyd and Ghelardi (1964) indicated that species diversity indices are influenced by both the species number, or "richness", and the species "evenness", or relative number of individuals of a species in a given habitat. They proposed a measure of species evenness to facilitate comparisons between habitats for which species diversity indices have been calculated. Horn (1966) proposed an index to measure the "overlap" between samples taken from different habitats. This index is an objective measure of the dissimilarity, or heterogeneity, of a set of sampIes.

Submitter

Megan Kendall

Purdue University

Date January 1976
Series Title Investigations of the Ichthyofauna of Nicaraguan Lakes
Pages 5
Publisher School of Life Sciences, University of Nebraska-Lincoln
Location of Publication Lincoln, Nebraska
URL http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1018&context=ichthynicar
Language English
Notes This article was found at Digital Commons @ the University of Nebraska-Lincoln: http://digitalcommons.unl.edu
Institution University of Nebraska-Lincoln
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Tags
  1. Abundance
  2. Animal welfare
  3. Central America
  4. Fish
  5. Physical environment
  6. Social Environments
  7. species diversity
  8. Species Recognition