PERTURBATION AND RECOVERY PATTERNS OF STARFISH-DOMINATED INTERTIDAL ASSEMBLAGES IN CHILE, NEW-ZEALAND, AND WASHINGTON STATE
PERTURBATION AND RECOVERY PATTERNS OF STARFISH-DOMINATED INTERTIDAL ASSEMBLAGES IN CHILE, NEW-ZEALAND, AND WASHINGTON STATE
复制标题
DOI：
10.1086/284371
复制
发表时间：
1985-01-01
影响因子：
2.9
通讯作者：
CANCINO, J
中科院分区：
文献类型：
--
作者：
PAINE, RT;CASTILLO, JC;CANCINO, J
当海星从某些海洋群落的一小部分（< 63 平方米区域）中消失时，贻贝会增加它们占据的空间百分比。与新西兰和华盛顿州的其他研究相比，智利的新结果表明，当以这种方式受到扰动时，这些组合都不稳定。所有这些都在相对较短的时间内达到不同的状态。当海星被允许返回时，观察到两种不同的恢复模式。在智利，实验地点迅速向未受干扰的对照地区靠拢；在其他地点，太大而无法被海星吃掉的贻贝继续占据主导地位。结果表明，大小逃逸对于海洋群落的捕食具有重要意义。这些持续存在但空间集中度递减的贻贝群是否是替代稳定状态取决于所采用的稳定性的定义。
When starfish are removed from small portions (< 63-m2 areas) of certain marine communities, mussels increase the percentage of space that they occupy. When compared to other studies in New Zealand and Wasington State new results from Chile indicate that none of these assemblages is stable when perturbed in this fashion. All attain a different state within relatively brief periods. When starfish were permitted to return, 2 different recovery patterns were observed. In Chile, the experimental site converged rapidly toward the undisturbed control; at the other sites, mussels too large to be eaten by starfish continued to dominate the space. The results indicate the importance of size escapes from predation for marine communities. Whether these persistent, but diminishing in spatial converage, stands of mussels are alternative stable states or not is dependent on the definition of stability employed.