Macroinvertebrate communities as bioindicators of water quality in conventional and organic irrigated rice fields in Guanacaste, Costa Rica
Macroinvertebrate communities as bioindicators of water quality in conventional and organic irrigated rice fields in Guanacaste, Costa Rica
复制标题
大型无脊椎动物群落作为哥斯达黎加瓜纳卡斯特传统和有机灌溉稻田水质的生物指标
DOI：
10.1016/j.ecolind.2012.12.013
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发表时间：
2013
影响因子：
6.9
通讯作者：
Florencia A. Trama
中科院分区：
文献类型：
--
作者：
V. F. Rizo;Anjali Kumar;Michael B. McCoy Colton;M. Springer;Florencia A. Trama
本研究的目的是比较水生大型无脊椎动物是如何受到某些管理措施和农药在有机和常规水稻栽培（治疗）在西北部的哥斯达黎加。我们采样的大型无脊椎动物在两个治疗，在水的入口（灌溉）和出口（排水）在两个周期（共8个月）的稻田种植。我们采用了一个水质指数，使用大型无脊椎动物（BMWP/CR）作为生物指示剂在这两个管理处理。昆虫科的平均值（P=0.0019）和物种的平均丰富度（P=0.0340）是更大的有机与传统的治疗，以及在入口处，而不是他们的出口。无论是大型无脊椎动物的平均丰度（P=0.0281）和昆虫的平均丰度（P=0.0065）是更大的有机与传统的治疗。有机处理的水质指数（BMWP/CR）在入口（124）比出口（72）大，在常规处理的入口（92）比出口（66）大，表明管理措施影响了大型底栖动物群落。有机处理表明，无论是在一般情况下，在那些被认为是敏感的污染比在传统的治疗更大的家庭和物种的大型无脊椎动物的解决。这种敏感的大型无脊椎动物（Baetis sp.，Fallceon sp.，细丝菌属，Tricorythodes sp.，Farrodes sp.，Phyllogomphoides sp.，海蜇属，Mayatrichia sp.，Neotrichia sp.，Oxethira sp.，（Nectopsyche sp.1，Nectopsyche sp.2，Oecetis sp.）可作为农业生态系统水质的生物指示剂。与此相反，更多的大型无脊椎动物抗污染被发现在传统的有机处理相比，水生大型无脊椎动物响应的类型的管理/产品，适用于稻田。
The purpose of this study was to compare how aquatic macroinvertebrates are affected by certain management practices and agrochemicals in organic and conventional rice cultivations (treatments) in northwestern of Costa Rica. We sampled macroinvertebrates in both treatments, at the water entrances (irrigation) and exits (drainage) during two cycles (8 months total) of rice field cultivation. We employed a water quality index using macroinvertebrates (BMWP/CR) as bioindicators in both management treatments. Insect family mean (P=0.0019) and species mean richness (P=0.0340) were greater in the organic vs. the conventional treatments as well as at the entrances rather than their exits. Both macroinvertebrates mean abundance (P=0.0281) and insects mean abundances (P=0.0065) were greater at the organic vs. the conventional treatments. The water quality index (BMWP/CR) was greater in the organic treatment at the entrance (124) comparing with the exit (72), and also at the conventional entrance (92) vs. the exit (66), thus showing that the management practices affected the macroinvertebrate community. The organic treatment showed the settlement of a greater number of families and species of macroinvertebrates both in general and in those considered sensitive to pollution than in the conventional treatment. This sensitive group of macroinvertebrates (Baetis sp., Fallceon sp., Leptohyphes sp., Tricorythodes sp., Farrodes sp., Phyllogomphoides sp., Hydroptila sp., Mayatrichia sp., Neotrichia sp., Oxyethira sp., Nectopsyche sp.1, Nectopsyche sp.2, Oecetis sp.) can be used as a bioindicators of water quality in these agroecosystems. On the contrary, more macroinvertebrates resistant to pollution were found in the conventional compared to the organic treatment, showing that aquatic macroinvertebrates respond to the type of management/products that are applied to the rice field.