Modelling recruitment dynamics of hake, Merluccius merluccius, in the central Mediterranean in relation to key environmental variables
- 作者：V. Bartolino ; F. Colloca ; P. Sartor ; G. Ardizzone
- 关键词：Hake ; Recruitment ; Environmental factors ; Generalized additive models ; Mediterranean
- 刊名：Fisheries Research
- 出版年：2008
- 期刊代码：45_01657836
- 类别：abs
- 出版时间：August 2008
- 卷：92
- 期：2-3
- 页码：277-288
- 文件大小：1279 K
摘要
Hake recruitment has been examined in relation to environmental variables in two of the main reproductive areas of the central Mediterranean, the northern and central Tyrrhenian Sea. Seventeen years time series data from trawl surveys revealed high fluctuations in recruit abundance that could not be just explained by spawning biomass estimations. Generalized additive models were developed to investigate hake recruitment dynamics in the Tyrrhenian Sea in relation to spawner abundance and selected key oceanographic variables. Environmental data were explored in attempt to explain survival processes that could affect early life history stages of hake and that accounted for high fluctuations in its recruitment.