caa a22 4500 606219161 CHVBK 20210128101116.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2439-z doi (NATIONALLICENCE)springer-10.1007/s11104-015-2439-z Local and regional-scale factors drive xerophytic shrub community dynamics on Mediterranean stabilized dunes [Elektronische Daten] [Sergio Chozas, Otília Correia, Miguel Porto, Joaquín Hortal] Aims: The aim of this study was to analyse the main drivers of compositional and distributional changes of xerophytic shrub communities at different spatial scales. We also assess whether the ecological dynamics of these communities comply with the Clementsian and/or Gleasonian paradigms of community assembly. Methods: We study the influence of environmental variables and human impacts at different scales on three xerophytic scrub communities growing on inland sand dunes. In 70 plots we sampled shrub cover, herb presence, soil characteristics and human disturbance. PCA and NMS were used to describe environmental and species variations. The effects of main drivers were assessed through Mantel tests, taking spatial structure into account. GAMs were used to model the scrub dynamics across environmental gradients. Results: We found that local and regional environmental factors drive the patchy distribution of the xerophytic scrub communities. The gradient found from Stauracanthus genistoides to Ulex australis-dominated communities depends on nutrient availability, probably through species interactions, namely facilitation and competition. In turn, the gradient from S. genistoides to Juniperus navicularis-dominated communities follows an aridity gradient associated with human disturbance, namely agriculture. Conclusions: We propose that the three studied scrub communities are the extremes of two successions. The S. genistoides to U. australis-dominated communities' succession is driven by local edaphic factors, following Clementsian principles while the S. genistoides to Juniperus navicularis-dominated communities' succession responds to local—disturbance—and regional—aridity—processes, following both Clementsian and Gleasonian principles. This implies that only dynamic management approaches directed to ensure a natural functioning of this landscape can be successful for their long-time preservation. Springer International Publishing Switzerland, 2015 Community structure nationallicence Spatial scale nationallicence Soil organic matter nationallicence Aridity, semi-arid shrubs nationallicence Inland dunes nationallicence Human impacts nationallicence Chozas Sergio Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut Correia Otília Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut Porto Miguel Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut Hortal Joaquín Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 413-426 0032-079X 391:1-2<413 2015 391 11104 https://doi.org/10.1007/s11104-015-2439-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2439-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chozas Sergio Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut NATIONALLICENCE 700 1- Correia Otília Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut NATIONALLICENCE 700 1- Porto Miguel Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut NATIONALLICENCE 700 1- Hortal Joaquín Centro de Biologia Ambiental and Ce3C - Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Edifício C2, Piso 5, 1749-016, Lisboa, Portugal aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 413-426 0032-079X 391:1-2<413 2015 391 11104