FUNCTIONAL AND NUMERICAL RESPONSES - A FRAMEWORK FOR FISH-ANGLER INTERACTIONS
FUNCTIONAL AND NUMERICAL RESPONSES - A FRAMEWORK FOR FISH-ANGLER INTERACTIONS
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DOI：
10.2307/1942010
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发表时间：
1994-11-01
影响因子：
5
通讯作者：
CARPENTER, SR
中科院分区：
文献类型：
--
作者：
JOHNSON, BM;CARPENTER, SR
运动渔业的概念框架，其中鱼垂钓者的相互作用被视为一个动态的捕食者-猎物的关系进行了评估，从门多塔湖，威斯康星州的海象渔业的数据。一个详细的7年的筒子架调查数据集，这个渔业揭示了鱼类和垂钓者动态之间的联系。垂钓者的捕捞率是积极的，线性相关的鱼类丰富的数据范围内的研究。垂钓努力与渔获率呈正相关。渔民的关系被模糊的三个困难通常与渔业数据集：季节性反应，预测变量的测量误差，和时间序列偏差。统计技术消除了这些偏倚，但数据仍不足以最终确定相互作用的适当模型。然而，很明显，假设静态垂钓者对运动鱼的操纵反应是没有根据的，能够严重混淆管理工作。垂钓者之间的相互作用和观察到的系统之外的替代渔业的影响似乎很重要。在更广泛的地理范围内进行更长时间的研究和操纵性管理实验的结合可能是必要的，以促进我们对钓鱼者相互作用的理解。
A conceptual framework for sport fisheries in which fish-angler interactions are viewed as a dynamic predator-prey relationship was evaluated with data from the walleye fishery in Lake Mendota, Wisconsin. A detailed 7-yr creel survey data set for this fishery revealed a link between fish and angler dynamics. Angler catch rates were positively and linearly related to fish abundance over the range of data in the study. Angling effort was positively related to catch rate. Fish-angler relationships were obscured by three difficulties commonly associated with fishery data sets: seasonal responses, measurement errors in predictor variables, and time series bias. Statistical techniques removed each of these biases, but the data were still insufficient to conclusively identify an appropriate model for the interaction. Nevertheless, it is clear that assumptions of static angler response to sport fish manipulations are unwarranted and capable of seriously confounding management efforts. Interactions among anglers and the influence of alternative fisheries outside the observed system appeared to be important. A combination of longer duration studies on a broader geographic scale and manipulative management experiments is probably necessary to advance our understanding of fish-angler interactions.