Transition to an alternate state in a continental shelf ecosystem
Transition to an alternate state in a continental shelf ecosystem
复制标题
DOI：
10.1139/f04-079
复制
发表时间：
2004-04-01
影响因子：
2.4
通讯作者：
Drinkwater, K
中科院分区：
文献类型：
--
作者：
Choi, JS;Frank, KT;Drinkwater, K
大西洋鳕鱼（Gadus morhua）在大西洋西北部种群的崩溃是世纪最引人注目和最广为人知的生态变化之一。不太为人所知的是在鳕鱼崩溃之前和与之同时发生在这些地区的系统性变化。我们的渔业独立的，长期的，标准化的数据库收集的东斯科舍陆架关闭新斯科舍省的分析表明，在过去的四十年中，连贯的，社区一级的身体大小，生物量和生理条件的减少发生在居民底层鱼类。这些变化发生在大空间（>10（4）km（2））和短时间（
The collapse of Atlantic cod (Gadus morhua) stocks in the northwest Atlantic Ocean ranks among the most dramatic and widely known ecological changes of the 20th century. Less widely known are the systemic changes that occurred within these areas prior to and coincident with the cod collapse. Our analysis of a fishery-independent, long-term, standardized database collected on the eastern Scotian Shelf off Nova Scotia revealed that during the past four decades, coherent, community-level reductions in body size, biomass, and physiological condition have occurred in the resident demersal fish species. The changes occurred over large spatial (>10(4) km(2)) and short temporal (