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12 results for “Mediterranean shrubland”
Data from: Climatic disequilibrium of recruit communities across a drought-induced die-off gradient in Mediterranean shrubland
<p>Positive plant–plant interactions (facilitation) may enhance the recruitment and establishment of species less adapted to local macroclimatic conditions. A major cause of this effect is climatic buffering, which implies an increased mismatch between the macroclimatic conditions and the climatic requirements of the existing community – climatic disequilibrium – of plants living under canopies. Here we explore the effect of drought-induced defoliation of Mediterranean shrubland canopy on the recruitment of woody species. We analyzed the differences in the climatic disequilibrium across different categories of canopy defoliation and plant–plant interactions: facilitation, neutral and inhibition. Climatic disequilibrium was estimated as the Euclidean distance in the multivariate environmental space between observed macroclimate and community inferred climate. The inferred climate was calculated by averaging the coordinates of the species' climatic niche centroids, obtained from species distribution, weighted by the species' relative abundances in each community. We found that the recruiting community growing under canopy showed higher climatic disequilibrium than the community growing in the gaps. The facilitated recruiting community growing under dead and living canopy showed the highest disequilibrium, followed by the community growing under mid-affected canopy. The climatic disequilibrium of the recruiting communities experiencing neutral and inhibited interaction was not affected by canopy defoliation. These findings indicate that the climatic disequilibrium of the recruiting community is determined by the facilitation–competition balance. Living canopy provides climatic buffering, but it also implies competition, while dead canopy may provide some structural climatic buffering, without implying competition for resources. These results highlight the relevance of incorporating plant–plant interactions, particularly facilitation, to better forecast plant community responses to extreme climate events and climate change.</p>
Composition and structure of Mediterranean shrublands for fuel characterization
<p>The Catalan Forest Fire Prevention Service (SPIF) and the Forest Science and Technology center (CTFC) present a relational database containing detailed and accurate information of woody composition and structure of shrub-like formations in the permanent 100-m<sup>2</sup> shrubland plots distributed in the NE of Iberian peninsula. The datasets provide valuable information to improve fire danger prediction, to study vegetation dynamics in relation to drought and fire, or to test aerial-based methodologies with ground-based information. </p> <p>The database includes information gathered in two projects: Combuscat and MatoSeg. <strong>Combuscat, </strong>with 571 100-m<sup>2</sup> plots, aimed to characterize shrubland structure and fuel load in Catalonia and was carried out by forest specialist members of Catalan Forest Rangers (Cos d’Agents Rurals, Generalitat de Catalunya). <strong>MatoSeg</strong> aimed to complement the database with information on vascular plant composition at different scales (1-m<sup>2</sup>,100-m<sup>2</sup>, and 400-m<sup>2</sup> ) collected in a set of 24 plots: 13 plots in Catalonia, and 11 in the nearby regions of Aragon and Valencia.</p> <p> </p>
Data from: Climatic disequilibrium of recruit communities across a drought-induced die-off gradient in Mediterranean shrubland
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Reflectance spectra of some species of a Mediterranean shrubland submitted to climate change
<p>Data file of the reflectance spectra of different association of<em> Quercus coccifera, Rosmarinus officinalis </em>and <em>Cistus albidus </em>in the presence<em> of </em> <em>Ulex parviflorus.</em></p>
Plant dieback in Mediterranean shrublands under 2014 extreme drought (Alicante, Spain)
<p>Field data from four Mediterranean shrublands monitored during an extreme drought in 2014 (hydrological year) in SE Spain. Data are plant dieback of the total plant community and main plant biotypes (shrubs, subshrubs and grasses), vegetation structure attributes (phytovolume, plant height, LAI, and sizes of patch and inter-patch areas), soil properties (soil depth and soil surface cover types) and water availability indicators (soil moisture and environmental variables).</p>
Data from: Climatic resilience after extreme drought in Mediterranean shrubland plant communities
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Reduce revenue vs. increase expenditure: Fires and plant invasion drive soil carbon loss with different mechanisms in a Mediterranean shrubland
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Effects of spatial distance and woody plant cover on beta diversity point to dispersal limitation as a driver of community assembly during post-fire succession in a Mediterranean shrubland
<p><span>Beta diversity, and its components of turnover and nestedness, reflect the processes governing community assembly, such as dispersal limitation or biotic interactions, but it is unclear how they operate at the local scale and how their role changes along post-fire succession. Here, we analyzed the patterns of beta diversity and its components in a herbaceous plant community after fire, and in relation to dispersal ability, in Central Spain. We calculated multiple site beta diversity (β<sub>SOR</sub>) and its components of turnover (βSIM) and nestedness (β<sub>SNE</sub>) of all herbaceous plants, or grouped by dispersal syndrome (autochory, anemochory, zoochory), during the first three years after wildfire. We evaluated the relationship between pairwise beta diversity (β<sub>sor</sub>), and its components (β<sub>sim</sub>, β<sub>sne</sub>), and spatial distance or differences in woody plant cover, a proxy of biotic interactions. We found high multiple-site beta diversity dominated by the turnover component. Community dissimilarity increased with spatial distance, driven mostly by the turnover component. Species with less dispersal ability (i. e. autochory) showed a stronger spatial pattern of dissimilarity. Biotic interactions with woody plants contributed less to community dissimilarity, which tended to occur through the nestedness component. These results suggest that dispersal limitation prevails over biotic interactions with woody plants as a driver of local community assembly, even for species with high dispersal ability. These results contribute to our understanding of post-fire community assembly and vegetation dynamics.</span></p>
Effects of spatial distance and woody plant cover on beta diversity point to dispersal limitation as a driver of community assembly during post-fire succession in a Mediterranean shrubland
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Data from: Climate variability and community stability in Mediterranean shrublands: the role of functional diversity and soil environment
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Data from: Dryness is accelerating degradation of vulnerable shrublands in semiarid Mediterranean environments
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Data from: Plant-soil feedback and the maintenance of diversity in Mediterranean-climate shrublands
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