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Título

Habitat fragmentation can modulate drought effects on the plant-soil-microbial system in Mediterranean Holm Oak (Quercus ilex) forests

Autor Flores-Rentería, Dulce; Curiel Yuste, Jorge ; Rincón, Ana ; Brearley, Francis Q.; García-Gil, Juan C.; Valladares Ros, Fernando
Palabras clave Drought
Soil respiration
Habitat fragmentation
Rewetting
Microorganisms
Fecha de publicación 1-mar-2015
EditorSpringer
Citación Microbial Ecology 69(4): 798-812 (2015)
Resumen© 2015, Springer Science+Business Media New York. Ecological transformations derived from habitat fragmentation have led to increased threats to above-ground biodiversity. However, the impacts of forest fragmentation on soils and their microbial communities are not well understood. We examined the effects of contrasting fragment sizes on the structure and functioning of soil microbial communities from holm oak forest patches in two bioclimatically different regions of Spain. We used a microcosm approach to simulate the annual summer drought cycle and first autumn rainfall (rewetting), evaluating the functional response of a plant-soil-microbial system. Forest fragment size had a significant effect on physicochemical characteristics and microbial functioning of soils, although the diversity and structure of microbial communities were not affected. The response of our plant-soil-microbial systems to drought was strongly modulated by the bioclimatic conditions and the fragment size from where the soils were obtained. Decreasing fragment size modulated the effects of drought by improving local environmental conditions with higher water and nutrient availability. However, this modulation was stronger for plant-soil-microbial systems built with soils from the northern region (colder and wetter) than for those built with soils from the southern region (warmer and drier) suggesting that the responsiveness of the soil-plant-microbial system to habitat fragmentation was strongly dependent on both the physicochemical characteristics of soils and the historical adaptation of soil microbial communities to specific bioclimatic conditions. This interaction challenges our understanding of future global change scenarios in Mediterranean ecosystems involving drier conditions and increased frequency of forest fragmentation.
Descripción The chapter IV of the thesis: FLORES-RENTERÍA, Dulce. Effects of forest fragmentation on the plant‐soil‐microbial interactions = Efectos de la fragmentación del encinar en las interacciones planta‐suelo‐microorganismos (2016), is published in: Flores‐Rentería, D., J. Curiel Yuste, A. Rincón, F. Brearley, J. García‐Gil and F. Valladares (2015). Habitat Fragmentation can Modulate Drought Effects on the Plant‐soil‐microbial System in Mediterranean Holm Oak (Quercus ilex) Forests. Microbial Ecology: 1‐15. doi: 10.1007/s00248‐015‐0584‐9. http://hdl.handle.net/10261/128289
El capítulo IV de la tesis doctoral: FLORES-RENTERÍA, Dulce. Efectos de la fragmentación del encinar en las interacciones planta‐suelo‐microorganismos = Effects of forest fragmentation on the plant‐soil‐microbial interactions (2016, está publicado en: Flores‐Rentería, D., J. Curiel Yuste, A. Rincón, F. Brearley, J. García‐Gil and F. Valladares (2015). Habitat Fragmentation can Modulate Drought Effects on the Plant‐soil‐microbial System in Mediterranean Holm Oak (Quercus ilex) Forests. Microbial Ecology: 1‐15. doi: 10.1007/s00248‐015‐0584‐9. http://hdl.handle.net/10261/128289
URI http://hdl.handle.net/10261/128289
DOI10.1007/s00248-015-0584-9
Identificadoresdoi: 10.1007/s00248-015-0584-9
issn: 0095-3628
e-issn: 1432-184X
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