Abstract
In the Southern Alps, the role of landscape context on meadows plant diversity was evaluated using a multi-model information theoretic approach and five competing hypotheses of landscape context factors: habitat quality (H1), matrix quality (H2), habitat change (H3), matrix quality change (H4) and topography-environmental conditions (H5)- measured at three spatial scales (125, 250 and 500 m). Shannon diversity index and species richness represented plant diversity obtained in 34 plots (100 m2 size). Landscape context affected plant diversity measures differently. Matrix quality change at larger scale (500 m) was the most supported hypothesis explaining Shannon diversity index, while species richness responded mostly to topography-environmental conditions in the immediate surroundings (125 m). No effects of present-day habitat and matrix quality (H1 and H2) were found. Matrix quality change affected positively Shannon diversity index through an effect of landscape neighbourhood context on farming management practices. Due to the importance of exposure and inclination of slopes, topography-environmental conditions influenced species richness mostly through energy-driven processes and farming management strategies. In terms of scale, matrix quality change was the strongest hypothesis explaining Shannon diversity index at all scales, while the underlying process affecting species richness changed with scale (H5 or H3). Overall, landscape context explained only 25–28 % of the variation in plant diversity, suggesting that landscape management may support biodiversity conservation when comprised in a global strategy including farming practices. In the study area, change in landscape diversity may be a good indicator for Shannon diversity index and south-eastern facing meadows should be preserved.
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Acknowledgments
We thank the cooperation of the local farmers during the field work. We acknowledge the project CAPPA and MIUR for their financial support of this project. We acknowledge Dr. Erika Hiltbrunner and Dr. Karen Budge for important insights to improve the manuscript, and the support of Euro-Mediterranean Centre on Climate Change during the last phase of the study.
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Appendix
Appendix
List of species recorded across the 34 selected meadow plots during the vegetation surveys in the lowlands of Valtellina Valley
Achillea millefolium | Erodium cicutarium | Potentilla reptans |
Agropyron repens | Festuca arundinacea | Ranunculus acris |
Agrostis tenuis | Festuca pratensis | Ranunculus bulbosus |
Ajuga reptans | Festuca rubra aggr. | Ranunculus ficaria |
Allium sp. | Galium mollugo aggr. | Ranunculus nemorosus |
Alopecurus utriculatus | Geranium molle | Ranunculus repens |
Anthoxanthum odoratum | Glechoma hederacea | Rumex acetosa |
Arabidopsis thaliana | Heracleum sphondylium | Rumex obtusifolius |
Arrhenatherum elatius | Holcus lanatus | Salvia pratensis |
Artemisia vulgaris | Lamium album | Secale cereale |
Avenula pube scens | Lamium maculatum | Silene dioica |
Bellis perennis | Lamium purpureum | Silene vulgaris |
Bromus hordeaceus | Leontodon hispidus | Stellaria graminea |
Bromus sterilis | Leucanthemum vulgare | Stellaria media |
Capsella bursa-pastoris | Lolium multiflorum | Taraxacum officinale |
Cardamine hirsuta | Lolium perenne | Thalictrum minus |
Cardaminopsis halleri | Lotus corniculatus | Trifolium pratense |
Carex pairaei | Lychnis flos-cuculi | Trifolium repens |
Carum carvi | Medicago sativa | Trisetum flavescens |
Centaurea nigrescens | Myosotis ramosissima | Urtica dioica |
Cerastium glomeratum | Ornithogalum umbellatum | Valerianella locusta |
Cerastium holosteoides | Pastinaca sativa | Veronica arvensis |
Chenopodium album | Phleum prate nse | Veronica chamaedrys |
Clinopodium vulgare | Pimpinella major | Veronica filiformis |
Convolvulus arvensis | Plantago lanceo lata | Veronica persica |
Crepis biennis | Plantago major | Vicia cracca |
Dactylis glome rata | Poa prate nsis | Vicia sativa |
Daucus carota | Poa trivialis | Viola tricolor |
Erigeron annuus | Polygonum aviculare |
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Monteiro, A.T., Fava, F., Gonçalves, J. et al. Landscape context determinants to plant diversity in the permanent meadows of Southern European Alps. Biodivers Conserv 22, 937–958 (2013). https://doi.org/10.1007/s10531-013-0460-1
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DOI: https://doi.org/10.1007/s10531-013-0460-1