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| Natura: | Artículo científico |
| Lingua: | es |
| Pubblicazione: |
Universidad Estatal a Distancia
2020
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| Soggetti: | |
| Accesso online: | https://www.redalyc.org/articulo.oa?id=515664454018 |
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Sommario:
- Calidad del ecosistema urbano del río Torres, San José, Costa Rica: factores bióticos y abióticos Virginia Alvarado-García Gabriela Pérez-Gómez Paola Gastezzi-Arias Multidisciplinaria (Ciencias Naturales y Exactas) soil urban birds water ecosystem Introduction:Tropical riparian ecosystems are poorly known and integrate abiotic and biotic factors in the landscape, definingecological processes along the river. Objective:To measure physical and biological indicators along a tropical river. Methods:Work was carried out in four Representative Zones of the Torres river during 2014 and 2015.At each site, the following were analyzed: a) soil loss; b) diversity of plants and vegetation cover; c) richness of birds; d) physicochemical and bacteriological parameters of the water. We worked with the Urban Ecosystem Quality Index of the Torres River (ICEURT) and the Water Quality Index (ICA-NSF).Results:A total of 365 plant species were identified, with the most diversezone having320 species. The coverage percentage ranged from 60% to 81% in the lower-middle part. Birds included 90 species in28 families, 66% were residents; the highest bird richness in a zone was55 species. Thehabitat quality was intermediate in all zones, with the middle part of the river having problems in bird and plant diversity; while, the lower part as lowin plant richness. Water quality wasmedium to poor in all zones. All variables were zone-dependent(X2=53,813; p<0,05). Conclusions:Ecosystem quality varied along the river, with generally medium to low values in biota and low values in water quality. 2020 artículo científico 1659-4266 https://www.redalyc.org/articulo.oa?id=515664454018 es http://www.redalyc.org/revista.oa?id=5156 UNED Research Journal / Cuadernos de Investigación UNED application/pdf Universidad Estatal a Distancia UNED Research Journal / Cuadernos de Investigación UNED (Costa Rica) Num.2 Vol.12