Do Electrofishing Activities Disrupt Stream Biofilm Standing Stocks? An Assessment from Two Headwater Streams in Western Oregon
Do Electrofishing Activities Disrupt Stream Biofilm Standing Stocks? An Assessment from Two Headwater Streams in Western Oregon
复制标题
电捕鱼活动是否会破坏水流生物膜的常备种群？
DOI：
10.1002/nafm.10549
复制
发表时间：
2021
影响因子：
1.1
通讯作者：
Warren, Dana R.
中科院分区：
文献类型：
--
作者：
Heaston, Emily D.;Segura, Catalina;Warren, Dana R.
人类以多种方式影响生态系统，科学领域的研究也不例外。如果数据收集对环境或生物区系的破坏太大，可能会导致相关研究或后续研究得出不准确的结论。我们评估流电捕鱼调查是否可以测量干扰底栖生物膜在两个森林源头在美国西部俄勒冈州。虽然已经评估了电捕鱼对大型无脊椎动物和鱼类的后果，但迄今为止还没有研究量化其对底栖生物膜的影响。我们观察到下降后，直接在两个流中的电捕鱼应计底栖叶绿素a的常备库存。电捕鱼后，橡树溪（俄勒冈州海岸山脉的一条小型三级溪流）的生物膜存量平均下降了约15%，而位于美国俄勒冈州西部喀斯喀特山脉的Lookout溪三级溪流平均下降了约34%。在返回橡树溪2周后，电捕鱼，常备股票已完全恢复到捕捞前的水平。虽然底栖生物膜现存量下降，与电捕鱼，影响是小的，当与那些从常见的流事件的干扰相比，当缩放到整个流系统。在橡树溪，电捕鱼活动导致的生物膜现存量下降比例约为中等流量事件（40%的河岸满排）后观察到的生物膜现存量下降比例的26%，约为完全河岸满排事件（140%的河岸满排）后生物膜现存量下降比例的15%。
Humans affect ecosystems in many ways, and scientific field studies are no exception. If data collection disrupts environments or biota too much, it can lead to inaccurate conclusions in the study of interest or in subsequent studies. We evaluated whether stream electrofishing surveys could measurably disturb the benthic biofilms in two forested headwaters in western Oregon, USA. While the consequences of electrofishing to macroinvertebrates and fish have been assessed, to date no studies have quantified its influence on benthic biofilms. We observed declines in the standing stocks of accrued benthic chlorophylladirectly after electrofishing in both streams. After electrofishing, the standing biofilm stocks declined by an average of ~15% in Oak Creek, a small third‐order stream in the Oregon Coast Range Mountains, and by an average of ~34% in a third‐order section of Lookout Creek, which is located in the western Cascade Mountains of Oregon, USA. In returning to Oak Creek 2 weeks after electrofishing, the standing stocks had fully recovered to their prefishing levels. While the benthic biofilm standing stocks did decline in association with electrofishing, the effects were small when compared with those of disturbances from common flow events and when scaling to the whole stream system. In Oak Creek, the proportional biofilm standing stock decline from electrofishing activity was about 26% of what was observed following a moderate flow event (40% of bank‐full discharge), and about 15% of the decline in biofilm standing stocks following a complete bank‐full discharge event (140% of bank‐full discharge).
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
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DOI：
10.1080/00288330.1975.9515544
发表时间：
1975
影响因子：
1.6
作者：
Chris R. Fowles
通讯作者：
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