The Removal Method of Population Estimation
The Removal Method of Population Estimation
复制标题
种群估计的去除方法
DOI：
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发表时间：
1958
期刊：
影响因子：
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通讯作者：
C. Zippin
中科院分区：
文献类型：
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作者：
C. Zippin
每两周一次的处理后鱼类普查采取了沿着5,600英尺的沟渠穿越沼泽，计数和估计的数量遇到的每一个物种的补充抽样收集。人口普查在人口重新增加的过程中结束了它的可靠性，于是就放弃了。鱼类的重新种群开始缓慢约4周后杀死，是不可否认的，在6周，相当大的8，和高潮在10。它是由主要入侵者宽吻鳕（Cyprinodon v. variegatus）发起的，到第17周时，包括创纪录的最小尺寸的大海鲢，但像斯诺克这样的大型鱼类却不见了，也许是很明显的。一般没有死亡和垂死的鱼类和稀缺的活鱼在沼泽2周后，后来表明，大部分的鱼类种群之间的沼泽和邻近的印度河近岸浅滩被摧毁。引用的文献
A biweekly posttreatment fish census was taken along a 5,600-foot ditch traversing the marsh; enumerations and estimates of the numbers of each species encountered were supplemented by sampling collections. The census was abandoned when progress in repopulation ended its dependability. Repopulation by fishes began slowly about 4 weeks after the kill, was undeniable at 6 weeks, considerable by 8, and climactic at 10. It was initiated by the broad killifish (Cyprinodon v. variegatus), the dominant invader, and included record minimumsized tarpon by the seventeenth week, but large-sized fish of such species as snook were absent, perhaps significantly. The general absence of dead and dying fishes and the scarcity of living fishes in the marsh after 2 weeks and later suggests that much of the fish population commuting between the marsh and adjacent inshore shallows of Indian River was destroyed. LITERATURE CITED