https://scholars.lib.ntu.edu.tw/handle/123456789/370705
標題: | Nonlinear dynamic features and co-predictability of the Georges Bank fish community | 作者: | CHIH-HAO HSIEH | 關鍵字: | Co-predictability; Community; Fish population; Nonlinear system dynamics | 公開日期: | 2012 | 卷: | 464 | 起(迄)頁: | 195-207 | 來源出版物: | Marine Ecology Progress Series | 摘要: | We examined evidence for nonlinear dynamics in fishery-independent survey data for an assemblage of 26 fish species on Georges Bank spanning the period 1963 to 2008. We used nonlinear time series analysis to determine (1) the presence of nonlinear dynamics in fish populations on Georges Bank, (2) the minimum number of dimensions required to effectively describe system dynamics, (3) the strength of patterns of co-predictability among all possible pairs of fish species, and (4) identification of groups of species characterized by similar dynamics. Here, nonlinear behavior refers to non-equilibrium dynamics, including chaos. The population trajectories of all 26 species exhibited strong density-dependent feedback as indicated by a Partial Rate Correlation Function analysis. Significant evidence of complex dynamical behavior was found for approximately 1 in 5 species. Low dimensionality for many of the individual series was identified, suggesting that for a given level of predictability, this system can be represented by a relatively small number of critically important ecological variables. Further, we found high levels of copredictability among pairwise combinations of individual species. We identified 4 major species groups sharing similar dynamic features on the basis of patterns of co-predictability, and explored potential mechanisms for interpreting the groupings in terms of trophic interactions and life history characteristics. © Inter-Research 2012. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84866661191&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/370705 |
DOI: | 10.3354/meps09868 | SDG/關鍵字: | community composition; correlation; density dependence; environmental factor; group size; ichthyofauna; life history trait; nonlinearity; population dynamics; prediction; time series analysis; trophic interaction; Atlantic Ocean; Georges Bank |
顯示於: | 海洋研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。