Perspectives of hydrological disturbance as the driving force of Brazilian semiarid stream ecosystems
Existing conceptual approaches on hydrological disturbance applied to aquatic ecosystems provide a relevant insight into the understanding of Brazilian semiarid streams functions. Succession is an appropriate tool for investigating the response of ecosystems to hydrological disturbance. Recent resea...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2002 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/30015 |
| Acceso en línea: | http://hdl.handle.net/10578/30015 |
| Access Level: | acceso abierto |
| Palabra clave: | Intermittent streams Hydrologycal disturbance Succession Theoritical perspective Semiarid region Northeast Brazil Arroyos intermitentes Perturbaciones hidrológicas Sucesión Perspectiva teórica Región semiárida |
| Sumario: | Existing conceptual approaches on hydrological disturbance applied to aquatic ecosystems provide a relevant insight into the understanding of Brazilian semiarid streams functions. Succession is an appropriate tool for investigating the response of ecosystems to hydrological disturbance. Recent research developed in intermittent streams of Brazil suggested that hydrological disturbance is the primary force for the operation of these ecosystems. A series of perspectives rising from recent studies are thereby proposed: 1. Low and medium floods occurring within a wet period may diminish the density of sorne aquatic communities. 2. Organisms more resistant to disturbance by flood might not serve as indicators of sorne disturbance events. 3. The succession pattern at the start of a wet period seems to be highly related to drought magnitude in the previous dry period. 4. Different frequencies or disturbance may induce very different successional patterns. 5. More complex communities may be more stable than less complex ones. |
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