Výsledky vyhledávání - "Abundance Index"

IntroductionWorldwide coastal fish resources face severe threats from fisheries overexploitation. However, the evaluation of abundance trends in most coastal fisheries is constrained by limited data. This study took blackmouth croaker (Atrobucca nibe

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Akademický článek

Incorporating expanded sampling into an alternative abundance index for the Fall Midwater Trawl survey

Autor: James R. White, Randall D. Baxter

Publikováno v: California Fish and Wildlife Journal, Vol 108, Iss 4 (2022)

The Fall Midwater Trawl (FMWT) Survey has been conducted near continuously since 1967 to assess the abundance and distribution of pelagic fish species throughout the San Francisco Bay/Sacramento-San Joaquin estuary (Bay Delta). For most of this perio

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Akademický článek

rGAI: An R package for fitting the generalized abundance index to seasonal count data

Autor: Emily B. Dennis, Calliste Fagard‐Jenkin, Byron J. T. Morgan

Publikováno v: Ecology and Evolution, Vol 12, Iss 8, Pp n/a-n/a (2022)

Abstract The generalized abundance index (GAI) provides a useful tool for estimating relative population sizes and trends of seasonal invertebrates from species' count data and offers potential for inferring which external factors may influence pheno

Externí odkaz: https://doaj.org/article/97cc2b3ccfc24f05ba71de9d8be8dd92

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