000165751 001__ 165751
000165751 005__ 20260114125842.0
000165751 0247_ $$2doi$$a10.1002/ldr.4044
000165751 0248_ $$2sideral$$a147089
000165751 037__ $$aART-2021-147089
000165751 041__ $$aeng
000165751 100__ $$aSanaei, Anvar
000165751 245__ $$aSpecies co‐occurrence shapes spatial variability in plant diversity–biomass relationships in natural rangelands under different grazing intensities
000165751 260__ $$c2021
000165751 5203_ $$aGrazing can alter plant species interactions in natural rangelands, which in turn might influence the productivity of the ecosystem but we do not fully understand how spatial variability in plant diversity‐biomass relationships are modulated by grazing intensity. Here, we hypothesized that plant species co‐occurrence in rangelands is mainly driven by niche segregation due to grazing and heterogeneity in local resources, and that grazing, therefore, modulates diversity–biomass relationships. We tested our hypothesis across 35 rangeland sites in Iran, using a species co‐occurrence index to assess plant spatial aggregation within each site. At each site, we measured aboveground biomass, plant diversity, topography, soil nutrients, and three levels of grazing intensity. High spatial segregation of plant communities (low species co‐occurrence) was found at heavily grazed sites, whereas greater spatial aggregation (high species co‐occurrence) was found on low and moderate grazed sites, showing varied associational patterns of species with grazing intensity. Soil nutrients increased with grazing intensity and spatial segregation of plant communities was greater at sites with high soil nutrient concentrations, indicating that grazing intensity influences the spatial heterogeneity of plant communities via nutrients deposited in urine and feces. Declining plant biomass with grazing intensity was related to a strong decline in graminoid species diversity, which suggests that the diversity‐biomass relationship is influenced by selective grazing of palatable species. The relationships between species co‐occurrence and biomass or plant diversity suggest non‐random patterns in species co‐occurrences with grazing intensity, which could be the result of competition driven by high livestock grazing intensity. We, therefore, suggest that rangeland stocking rates should be managed properly to maintain rangeland production while promoting plant diversity.
000165751 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000165751 590__ $$a4.377$$b2021
000165751 591__ $$aSOIL SCIENCE$$b12 / 39 = 0.308$$c2021$$dQ2$$eT1
000165751 591__ $$aENVIRONMENTAL SCIENCES$$b112 / 279 = 0.401$$c2021$$dQ2$$eT2
000165751 592__ $$a1.246$$b2021
000165751 593__ $$aDevelopment$$c2021$$dQ1
000165751 593__ $$aSoil Science$$c2021$$dQ1
000165751 593__ $$aEnvironmental Chemistry$$c2021$$dQ1
000165751 594__ $$a8.2$$b2021
000165751 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000165751 700__ $$aSayer, Emma J.
000165751 700__ $$aSaiz, Hugo
000165751 700__ $$aYuan, Zuoqiang
000165751 700__ $$aAli, Arshad
000165751 773__ $$g32, 15 (2021), 4390-4401$$pLand degrad. dev.$$tLAND DEGRADATION & DEVELOPMENT$$x1085-3278
000165751 8564_ $$s2944923$$uhttps://zaguan.unizar.es/record/165751/files/texto_completo.pdf$$yVersión publicada
000165751 8564_ $$s2173269$$uhttps://zaguan.unizar.es/record/165751/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000165751 909CO $$ooai:zaguan.unizar.es:165751$$particulos$$pdriver
000165751 951__ $$a2026-01-14-12:58:08
000165751 980__ $$aARTICLE