000165811 001__ 165811
000165811 005__ 20260114135812.0
000165811 0247_ $$2doi$$a10.5194/we-14-39-2014
000165811 0248_ $$2sideral$$a147068
000165811 037__ $$aART-2014-147068
000165811 041__ $$aeng
000165811 100__ $$aSaiz, H.
000165811 245__ $$aPlant–plant spatial association networks in gypsophilous communities: the influence of aridity and grazing and the role of gypsophytes in its structure
000165811 260__ $$c2014
000165811 5060_ $$aAccess copy available to the general public$$fUnrestricted
000165811 5203_ $$aIn stressful environments many plant species are only able to survive if they benefit from the facilitative effect of "nurse" species. Typically, these nurses are species adapted to the stressful environmental conditions that favor the formation of vegetation patches, where other, less-adapted species can be established. However, ecological interactions can be influenced by abiotic and biotic factors. In this study we quantified the effect of grazing and aridity on the patch structure of gypsophilous plant communities and the role that gypsophytes, species adapted to gypsum soils, play in structuring these communities. Specifically, we created signed networks (networks with positive and negative links) at grazed and ungrazed sites in two areas in the middle Ebro Valley, Spain, that differed in aridity. We built networks connecting plant species with positive and negative links derived from the spatial associations between species. Then, we divided networks in partitions which represented the different vegetation patches present in the community. We found that vegetation patches were more specific (same species always were associated in the same patch type) in high aridity and grazed sites, where environmental conditions were the most stressful and many species persisted by associating with nurse species. Gypsophytes were more important aggregating species than nongypsophytes in grazed high aridity sites. Independently of study sites, gypsophyte shrubs acted as nurses, but small gypsophytes segregated from other species and formed monospecific patches. In conclusion, grazing and aridity influenced the patch structure of gypsophilous plant communities. Gypsophytes played an important role structuring the patch community, but this importance depended on environmental conditions and the identity of gypsophyte.
000165811 536__ $$9info:eu-repo/grantAgreement/ES/DGA/GA-LC-020-2010$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27259$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2012-375080
000165811 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000165811 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000165811 700__ $$0(orcid)0000-0002-6227-861X$$aLópez Alados, C.
000165811 700__ $$0(orcid)0000-0001-6970-7790$$aPueyo, Y.
000165811 773__ $$g14, 1 (2014), 39-49$$pWeb ecol.$$tWeb ecology$$x2193-3081
000165811 8564_ $$s694450$$uhttps://zaguan.unizar.es/record/165811/files/texto_completo.pdf$$yVersión publicada
000165811 8564_ $$s2666586$$uhttps://zaguan.unizar.es/record/165811/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000165811 909CO $$ooai:zaguan.unizar.es:165811$$particulos$$pdriver
000165811 951__ $$a2026-01-14-12:46:17
000165811 980__ $$aARTICLE