OPTIMAL FORAGING AREA - SIZE AND ALLOCATION OF SEARCH EFFORT
OPTIMAL FORAGING AREA - SIZE AND ALLOCATION OF SEARCH EFFORT
复制标题
DOI：
10.1016/0040-5809(78)90054-0
复制
发表时间：
1978-01-01
影响因子：
1.4
通讯作者：
ANDERSSON, M
中科院分区：
文献类型：
--
作者：
ANDERSSON, M
建立了统一栖息地中带着食物返回中心的动物觅食努力的最优空间分配模型。采食者被假定在给定的时期内使其食物产量最大化。觅食的努力被花费在寻找食物和运输到中心地点上。如果且仅当整个觅食区域的额外食物的边际成本相等时，搜索的分配才是最优的。该模型用于预测最优区域半径和搜索时间的分配。在使用真实参数值的情况下，单位面积的最佳时间大致随距离中心位置的距离线性减小。考察了食物密度和取食特性对其的影响。
A model is derived for the optimal spatial allocation of foraging effort for an animal returning with food to a central place in a uniform habitat. The forager is assumed to maximize its yield of food during a given period. Foraging effort is expended on search for food, and on transportation to the central place. The allocation of search has been optimal if and only if the marginal cost of additional food is equal throughout the foraging area when the period has elapsed. The model is used to predict the optimal area radius and allocation of search time. With realistic parameter values, the optimal time per unit area roughly decreases linearly with the distance from the central place. The influence of food density and forager characteristics is examined.