Application of Empirical Size-Dependent Models of Larval Fish Vital Rates to the Study of Production: Accuracy and Association with Adult Stock Dynamics in a Comparison among Species
Application of Empirical Size-Dependent Models of Larval Fish Vital Rates to the Study of Production: Accuracy and Association with Adult Stock Dynamics in a Comparison among Species
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幼鱼存活率经验大小相关模型在生产研究中的应用：物种间比较中的准确性及其与成体种群动态的关联
DOI：
10.1139/f93-006
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
P. Pepin
中科院分区：
文献类型：
--
作者：
P. Pepin
一个简单的模型的大小依赖变化的生物量的一群鱼幼虫基于经验推导的关系，为生长和死亡提出。将模型预测结果与1980 - 1981年纽芬兰大浅滩7种鱼苗的数据进行比较，以确定(1)大小依赖的鱼苗生物量曲线的斜率是否与一般经验模型有显著差异；(2)生物量曲线的斜率和截距是否分别反映了相对年级强度和种群丰度。在7个案例中，有6个案例的大小依赖幼虫生物量曲线斜率与模型预测值无显著差异。幼虫生物量曲线斜率与标准化年级强度无显著相关。曲线的高度（即截距）与成虫种群生物量的关系很弱。我从这组观察中得出结论，对幼鱼生命率的估计可能无法通过……
A simple model of the size-dependent change in biomass of a cohort of fish larvae based on empirically derived relationships for growth and mortality is presented. Model predictions are compared with data for seven species of larval fish sampled on the Grand Banks of Newfoundland in 1980–81 to determine (1) whether the slope of the size-dependent larval biomass curve is significantly different from the general empirical model, and (2) whether the slope and intercept of the biomass curve are reflective of relative year-class strength and stock abundance, respectively. The slope of the size-dependent larval biomass curve is not significantly different from that predicted by the model in six of seven cases. The slope of the larval biomass curve is not significantly correlated with standardized year-class strength. The height of the curve (i.e. intercept) is only weakly associated with adult stock biomass. I conclude from this set of observations that estimates of larval fish vital rates may not be measured w...