Pattern variation of fish fingerling abundance in the Na Thap Tidal river of Southern Thailand: 2005-2015

Asean-Fen International Fisheries Symposium - 2017

Donroman, T.^1 ; Chesoh, S.^2 ; Lim, A.^1

Department of Mathematics and Computer Science, Indonesia^1

Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, Pattani

94000, Thailand^2

关键词: Clustering number;    Effective tool;    Linear regression methods;    Multiple linear regressions;    Pattern variation;    Similar pattern;    Southern Thailand;    Variation pattern;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/137/1/012082/pdf
DOI  :  10.1088/1755-1315/137/1/012082

来源: IOP

【 摘 要 】

This study aimed to investigate the variation patterns of fish fingerling abundance based on month, year and sampling site. Monthly collecting data set of the Na Thap tidal river of southern Thailand, were obtained from June 2005 to October 2015. The square root transformation was employed for maintaining the fingerling data normality. Factor analysis was applied for clustering number of fingerling species and multiple linear regression was used to examine the association between fingerling density and year, month and site. Results from factor analysis classified fingerling into 3 factors based on saline preference; saline water, freshwater and ubiquitous species. The results showed a statistically high significant relation between fingerling density, month, year and site. Abundance of saline water and ubiquitous fingerling density showed similar pattern. Downstream site presented highest fingerling density whereas almost of freshwater fingerling occurred in upstream. This finding confirmed that factor analysis and the general linear regression method can be used as an effective tool for predicting and monitoring wild fingerling density in order to sustain fish stock management.