Ecosystemic Assessment of Surface Water Quality in the Virilla River: Towards Sanitation Processes in Costa Rica
Ecosystemic Assessment of Surface Water Quality in the Virilla River: Towards Sanitation Processes in Costa Rica
复制标题
维里利亚河地表水质量的生态系统评估：哥斯达黎加的卫生进程
作者：
Leonardo Mena;Oscar Vásquez;C. Gómez;A. Fonseca;A. Rodríguez;R. Sánchez
水质信息在水管理过程中是支持决策的必要条件。缺乏信息在某些时候限制了适当卫生设施的落实，而发展中国家仍然缺乏这种设施。在这项研究中，生态系统的水质评估进行了在Virilla河在哥斯达黎加，在未来的卫生发展特别感兴趣的一部分。其中包括2014年至2016年对物理、化学、微生物和底栖大型无脊椎动物参数的监测。多元统计和水质指数用于数据解释。结果表明，水质下降下游向更城市化的地区。特别是磷、氮和E.结果表明，样地分为两类，这与土地利用类型相一致。底栖大型无脊椎动物的多样性主要代表Baetidae，摇蚊科，Leptohypidae，Hydropsychidae，蚋科和Physidae。它们主要受水温、亚硝酸盐、铵、可溶性活性磷、总固体、碱度、硝酸盐和总悬浮物的影响。三项水质指标一致显示水体状况较差。总体结果表明，该河流的主要污染源可能是废水排放。因此，应特别努力在国内进行管制。
Water quality information is essential supporting decision making in water management processes. The lack of information restricts, at some point, the implementation of adequate sanitation, which is still scarce in developing countries. In this study, an ecosystemic water quality assessment was conducted in the Virilla river in Costa Rica, in a section of particular interest for future sanitation development. It included the monitoring of physical, chemical, microbiological and benthic macroinvertebrate parameters from 2014 to 2016. Mutivariate statistics and water quality indexes were used for data interpretation. Results indicated that water quality decreased downstream towards more urbanised areas. Particularly, extreme values of phosphorous, nitrogen and E. coli were found. Sample sites were grouped in two clusters, which were consistent with land use. Benthic macroinverterbrates diversity was predominantly represented by Baetidae, Chironomidae, Leptohyphidae, Hydropsychidae, Simuliidae and Physidae. They were mostly influenced by water temperature, nitrite, ammonium, soluble reactive phosphorous, total solids, alkalinity, nitrate and total suspended solids. Three water quality indexes consistently showed the poor condition of the water body. The overall results indicate that the main sources of pollution in the river are likely to be wastewater discharges. Thus, special efforts should be undertaken regarding its regulation in the country.
影响因子：
3.7
作者：
Gutiérrez-Fonseca PE;Ramírez A;Pringle CM
通讯作者：
Pringle CM