Baseline for the study of the population density of Quiscalus nicaragüensis Salvin & Godman 1891 in Nicaragua
DOI:
https://doi.org/10.5377/recoso.v7i11.18404Keywords:
Nicaraguan zanatillo, quiscalus nicaragüensis, baseline, population density, endemicAbstract
This research aims to establish the baseline for studying the population density of the Nicaraguan Grackle (Quiscalus nicaraguensis) in Nicaragua. It was conducted between March and July 2020 using the strip transect method in the municipalities of Mateare, Tipitapa, Tisma, and Rivas, within its distribution area. The transect method is a sampling technique that provides precise information on the vegetation of an area without the need for exhaustive analysis, by measuring parameters within a rectangle of the study area.The Nicaraguan Grackle is a critically endangered endemic bird species, making this study crucial for its assessment and management. Preliminary results indicate an approximate population density of 8 individuals per hectare, with Tisma having the highest density (12 individuals/ha). The bird's distribution covers 144,618 hectares, mainly along the shores of Nicaragua's large lakes, particularly favoring marginal lacustrine wetlands (11 individuals/ha), which offer heterogeneous habitats.This study lays the groundwork for future population research and management plans for the Nicaraguan Grackle. A simple random sampling is recommended, consisting of 201 transects of 1,295 meters each, distributed nationally due to the homogeneity in population density among groups. This design ensures significant sampling with a 95% confidence level
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