THE INFLUENCE OF THE FREQUENCY OF PERIODIC DISTURBANCES ON THE MAINTENANCE OF PHYTOPLANKTON DIVERSITY
THE INFLUENCE OF THE FREQUENCY OF PERIODIC DISTURBANCES ON THE MAINTENANCE OF PHYTOPLANKTON DIVERSITY
复制标题
DOI：
10.1007/bf00377315
复制
发表时间：
1986-12-01
期刊：
影响因子：
2.7
通讯作者：
SOMMER, U
中科院分区：
文献类型：
--
作者：
GAEDEKE, A;SOMMER, U
通过连续竞争实验，研究了不同频率的周期性扰动对浮游植物多样性维持的影响。扰动由稀释事件组成，这意味着添加新鲜营养物和消除生物体。稀释事件之间的间隔从1天到14天不等。多样性被发现增加干扰之间的间隔。共存物种属于不同的策略类型：（a）在丰富条件下生长迅速的物种，（B）在贫困条件下具有良好竞争能力的物种。(c)有能力建立有限养分储存池的物种。只有当时间间隔超过一代时间时，才发现共存物种的数量增加。
The influence of periodic disturbances of various frequency on the maintenance of the phytoplankton diversity was studied by semicontinuous competition experiments. Disturbances consisted of dilution events, which meant both addition of a fresh nutrients and elimination of organisms. The intervals between dilution events varied from 1 to 14 days. Diveristy was found to increase with increasing intervals between disturbances. Coexisting species belonged to different strategy types: (a) species with rapid growth under enriched conditions, (b) species with good competitive abilities under impoverished conditions. (c) species with the ability to build up storage pools of the limiting nutrient. An increase of the number of coexisting species over the number that would have coexisted in steady state was only found when the interval exceeded one generation time.