Breeding population of Terns and Western Reef Heron Egretta gularis on Ghaber Nakhoda and Dara Islands, in Persian Gulf in 2003, 2009, 2012 and 2016
Journal Title: Open Access Journal of Environmental and Soil Sciences - Year 2018, Vol 1, Issue 5
Abstract
The research was conducted on Ghabre Nakhoda and Dara islands in Khore Mosa Creek in Persian Gulf on August in 2003, 2009, 2012, and 2016. Total count method was used to obtain the census of the nests and breeding population of terns and Western Reef Heron on Islands. Five species of terns and Western Reef Heron had bred on Ghabre Nakhoda and Dara islands in 2003, 2009, 2012, and 2016. Average breeding pairs of Lesser Crested Tern Thalasseus bengalensis, Swift Tern Thalasseus bergii, Bridled Tern Sterna anaethetus, White-cheeked Tern Sterna repressa, Caspian Tern Hydroprogne caspia and Western Reef Heron Egretta gularis were 1368, 63, 217, 71, and 13 pairs on Ghabre Nakhoda and 127, 7, 54, 4, 9, and 6 pairs on Dara, respectively. Thirty-one species from ten families belonged to two order of water birds recorded on August in 2003, 2009, 2012, and 2016 on both islands. Total number of counted water birds was 26303 individuals on Ghabre Nakhoda and 17404 individuals on Dara Island in 2003, 2009, 2012 and 2016. Maximum species richness on Ghabre Nakhoda was in 2016(31 species), but on Dara island was in 2009(18 species). The detailed knowledge of general seabird ecology and of the numbers and productivity of many populations makes them particularly appropriate as a choice of bio-monitor or bio-indicator [1,2]. The colonial nature of breeding seabirds has several benefits. It allows numbers to be tracked for less effort than if the breeding populations were dispersed, and it allows large quantities of data to be collected from a particular site in a relatively short period of time. However, to be useful, a bio-monitor must respond in a sensitive way to changes in the variable for which it is a proxy measure [1,2].
Authors and Affiliations
Behrouz Behrouzi-Rad
Keywords
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- EP ID EP572130
- DOI 10.32474/OAJESS.2018.01.000122
- Views 44
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