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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >The Aquatic Macroinvertebrates of the White River National Wildlife Refuge, Arkansas
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The Aquatic Macroinvertebrates of the White River National Wildlife Refuge, Arkansas

机译：怀特河国家野生动物保护区的水生大型无脊椎动物

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摘要

The objectives of this study were to survey the diversity of the aquatic macroinvertebrates of the White River National Wildlife Refuge (WRNWR) and determine relative abundances and distributional and seasonal patterns. No comprehensive investigation of WRNWR aquatic macroinvertebrates had been conducted previously. Thirty sampling stations were established within WRNWR. Each station was sampled twice, providing 60 total samples, for 1.5 man hours with a Turtox Indestructible™ dip net. Three black light trap samples were taken to augment the species list. A total of 15,056 individuals representing 219 taxa was taken by dip net samples during the sampling period October 1989-September 1990. Insects comprised 76% of the organisms captured with Coleoptera being the dominant group. The most abundant organism for WRNWR was Hydroporus vittatipennis. Black light samples and literature records each revealed 21 additional taxa bringing the total taxa currently known from WRNWR to 261. Each of the 30 stations was assigned to one of four associations, which were defined by continuity of determined internal and external factors. The Climax-Isolation Association possessed the most stable and complex community structures; isolation by levees and natural boundaries and scarcity of human intervention probably accounted for this. The Congruent Lentic Association embraced communal structures of good quality but possessed factors limiting diversity. The Agriculturally Inflicted-White River Tributary Association supported relatively simple aquatic macroinvertebrate communities. Finally, the Restricted Association consisted of two stations containing significant limiting factors resulting in concomitantly depauperate aquatic macroinvertebrate communities.
机译：这项研究的目的是调查白河国家野生动物保护区（WRNWR）的水生无脊椎动物的多样性，并确定相对丰度以及分布和季节格局。以前没有对WRNWR水生无脊椎动物进行全面研究。在WRNWR内建立了30个采样站。每个站点使用Turtox Indestructible™浸网采样两次，共提供60个样本，历时1.5个工时。采集了三个黑光陷阱样品以增加物种清单。在1989年10月至1990年9月的采样期间，总共15050个个体（代表219个类群）被采样。昆虫占以鞘翅目为主要种群的生物的76％。 WRNWR最丰富的生物是维他命孢子。黑光样本和文献记录各揭示了21个额外​​的分类单元，从而使WRNWR当前已知的总分类单元增加到261个。这30个台站中的每一个都被分配到四个关联之一，这是由确定的内部和外部因素的连续性定义的。高潮隔离协会拥有最稳定，最复杂的社区结构。堤坝和自然界线的隔离以及人为干预的稀缺性可能是造成这种情况的原因。 Congruent Lentic Association拥有良好的社区结构，但拥有限制多样性的因素。受农业影响的怀特河支流协会支持相对简单的水生无脊椎动物群落。最后，限制协会由两个站组成，两个站包含明显的限制因素，导致水生大型无脊椎动物群落随之减少。

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