Regional differences in soil pH niche among dry grassland plants in Eurasia
| العنوان: | Regional differences in soil pH niche among dry grassland plants in Eurasia |
|---|---|
| المؤلفون: | Zdenka Preislerová, Milan Chytrý, Kristina Merunková, Henrik von Wehrden, Annika Brinkert, David Zelený, Pavel Lustyk, Viktoria Wagner, Florian Jansen, Jiří Danihelka, Salza Palpurina, Karsten Wesche, Norbert Hölzel, Johannes Kamp |
| المصدر: | Wagner, V, Chytrý, M, Zelený, D, von Wehrden, H, Brinkert, A, Danihelka, J, Hölzel, N, Jansen, F, Kamp, J, Lustyk, P, Merunková, K, Palpurina, S, Preislerová, Z & Wesche, K 2017, ' Regional differences in soil pH niche among dry grassland plants in Eurasia ' Oikos, vol 126, no. 5, pp. 660-670 . DOI: 10.1111/oik.03369 Wagner, V, Chytrý, M, Zelený, D, von Wehrden, H, Brinkert, A, Danihelka, J, Hölzel, N, Jansen, F, Kamp, J, Lustyk, P, Merunková, K, Palpurina, S, Preislerová, Z & Wesche, K 2017, ' Regional differences in soil pH niche among dry grassland plants in Eurasia ', Oikos, vol. 126, no. 5, pp. 660-670 . https://doi.org/10.1111/oik.03369Test |
| بيانات النشر: | Wiley, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | precipitation (climatology), 0106 biological sciences, competitive ability, Calcicole, Species distribution, Niche, plant, Biology, 010603 evolutionary biology, 01 natural sciences, Soil pH, interspecific variation, Ecology, Evolution, Behavior and Systematics, 2. Zero hunger, Ecological niche, pH, Ecology, Edaphic, Interspecific competition, 15. Life on land, Substrate (marine biology), Ecosystems Research, Phytotoxicity, ecological modeling, grassland, nineteenth century, 010606 plant biology & botany |
| الوصف: | Soil pH is a key predictor of plant species occurrence owing to its effect on the availability of nutrients and phytotoxic metals. Although regional differences in realized soil pH niche ('niche shifts') have been reported since the 19th century, no study has disentangled how they are influenced by spatial differences in substrate availability, macroclimate, and competitors. We linked plot-level data on species occurrence and measured soil pH from dry grasslands in eight regions across Eurasia (n = 999 plots), spanning a geographic gradient of 6862 km. We calculated regional shifts in niche optimum (Dopt) and width (Dwidth) for 73 Species × Region 1 × Region 2 combinations (SRRs; 38 study species) using extended Huisman-Olff-Fresco models. Next, we used commonality analysis to partition the contribution of substrate availability, precipitation, and species traits indicative of competitive ability to variation in regional niche shifts. Shifts in optimum were rare (5% of SRRs with Dopt ≥ 1 pH units) but many species did not show optima within regions. By contrast, shifts in niche width were common (22% of SRRs with Dwidth ≥1 pH units) and there were pronounced interspecific differences. Whereas none of the three predictors significantly explained shifts in niche optimum, common and unique effects of substrate availability and precipitation accounted for 85% of variation in niche width. Our results suggest that substrate availability and precipitation could be the driving factors behind species regional shifts in niche width. Studies that address additional factors, such as other edaphic niches, and their variability at the regional and micro-scale will improve our understanding of the mechanisms underlying species distributions. Soil pH is a key predictor of plant species occurrence owing to its effect on the availability of nutrients and phytotoxic metals. Although regional differences in realized soil pH niche ('niche shifts') have been reported since the 19th century, no study has disentangled how they are influenced by spatial differences in substrate availability, macroclimate, and competitors. We linked plot-level data on species occurrence and measured soil pH from dry grasslands in eight regions across Eurasia (n = 999 plots), spanning a geographic gradient of 6862 km. We calculated regional shifts in niche optimum (Dopt) and width (Dwidth) for 73 Species × Region 1 × Region 2 combinations (SRRs; 38 study species) using extended Huisman-Olff-Fresco models. Next, we used commonality analysis to partition the contribution of substrate availability, precipitation, and species traits indicative of competitive ability to variation in regional niche shifts. Shifts in optimum were rare (5% of SRRs with Dopt ≥ 1 pH units) but many species did not show optima within regions. By contrast, shifts in niche width were common (22% of SRRs with Dwidth ≥1 pH units) and there were pronounced interspecific differences. Whereas none of the three predictors significantly explained shifts in niche optimum, common and unique effects of substrate availability and precipitation accounted for 85% of variation in niche width. Our results suggest that substrate availability and precipitation could be the driving factors behind species regional shifts in niche width. Studies that address additional factors, such as other edaphic niches, and their variability at the regional and micro-scale will improve our understanding of the mechanisms underlying species distributions. |
| تدمد: | 0030-1299 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd3075b1ca47d73cfd669c63e68893cTest https://doi.org/10.1111/oik.03369Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....cdd3075b1ca47d73cfd669c63e68893c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00301299 |
|---|