Hydric regime in Mediterranean freshwater forested wetlands and their relationship with native and non-native forest cover

espanolEn diferentes zonas Mediterraneas (MZ) del mundo, extensas areas de bosque nativo han sido reemplazadas por plantaciones forestales de especies exoticas que superaron las 246 millones de hectareas en el 2010. En Chile cerca del 80% de estas plantaciones se distribuyen en la misma zona donde dominan los humedales boscosos. Se ha descrito que las plantaciones forestales exoticas estan inversamente relacionadas con la cantidad, distribucion y disponibilidad de los recursos hidricos. En este estudio se evaluaron las caracteristicas del regimen hidrico de humedales boscosos y se establecio su relacion con las coberturas de plantacion forestal exotica y bosque nativo. Los resultados indican que la mayoria de los humedales presentaron una disminucion significativa en la profundidad y volumen de agua en epoca estival (p 18%) presentaron un regimen hidrico temporal, a diferencia de aquellos donde domino el bosque nativo (>21%) que presentaron un regimen hidrico permanente. Se registraron fuertes relaciones negativas (p EnglishIn different Mediterranean zones (MZ) of the world, extensive areas of native forests have been replaced by forest plantations composed of non-native species that exceeded 264 million ha globally in 2010. In Chile, 80% of these plantations are distributed in the same zone where forested wetlands are dominant. Non-native forest plantations are inversely related to the quantity, distribution and availability of water resources. In this study, the characteristics of the water regime of the forested wetlands were assessed, and their relationship to non-native forest plantations and native forest cover was established. The results indicated that most forested wetlands present a significant decrease in both depth and water volume in the summer (p 18%) presented a temporary water regime, unlike those in which native forest dominated (>21%), which presented a permanent water regime. Strong negative relations were registered (p