Leiva Germán, Fuentes Norka, Zelada Sara, Ríos-Henríquez Catalina
Magíster en Ciencias, mención Producción, Manejo y Conservación de Recursos Naturales, Universidad de los Lagos, Escuela de Postgrado, Camino chinquihue km 6, Puerto Montt, Chile.
Laboratorio de Limnología, Departamento de Acuicultura y Recursos Agroalimentarios, Universidad de los Lagos, Av. Fuchslocher, 1305, Osorno, Chile.
Heliyon. 2019 Oct 3;5(10):e02492. doi: 10.1016/j.heliyon.2019.e02492. eCollection 2019 Oct.
Increased pollution and degradation of water resources and their associated ecosystems has stimulated the development of tools and methodologies to characterize, estimate, predict, and reverse the environmental impact of anthropic effects on water bodies. The Secondary Water Quality Standards (NSCA) adopted in Chile have incorporated the use of bioindicators complementary to physicochemical analyses, in order to determine the ecological condition of lotic and lentic environments. Our research used the "Lake Biotic Index" (LBI) to establish the ecological condition of Lake Rupanco using benthic macroinvertebrates. The results indicated an Oligo-Eubiotic condition for this lake given the high concentration of oxygen and low organic matter content in sediments, in addition to low biogenic potential and good taxa preservation in both the autumn and spring surveys. Features of the ecological condition obtained through the application of the LBI (benthic subsystem) conform to the results of physicochemical and microalgae analyses undertaken previously in Lake Rupanco (pelagic subsystem). Based on these results, we support application of the LBI index as a complementary tool for the integrated management of lentic ecosystems.
水资源及其相关生态系统污染的加剧和退化，促使人们开发各种工具和方法，以描述、估算、预测并扭转人类活动对水体的环境影响。智利采用的《二级水质标准》（NSCA）纳入了生物指标的使用，作为物理化学分析的补充，以确定流水和静水生态环境的生态状况。我们的研究使用“湖泊生物指数”（LBI），通过底栖大型无脊椎动物来确定鲁潘科湖的生态状况。结果表明，鉴于沉积物中氧气浓度高、有机物含量低，以及在秋季和春季调查中生物成因潜力低且分类群保存良好，该湖处于寡污-真污状态。通过应用LBI（底栖子系统）获得的生态状况特征与之前在鲁潘科湖（浮游子系统）进行的物理化学和微藻分析结果相符。基于这些结果，我们支持将LBI指数作为静水生态系统综合管理的补充工具加以应用。
