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Long-term natural dynamics of an alpine lichen heath in the Teberda State Biosphere Reserve, northwestern Caucasus
Botany ( IF 1.0 ) Pub Date : 2021-05-20 , DOI: 10.1139/cjb-2020-0235 Tatiana G. Elumeeva 1 , Dzhamal K. Tekeev 2 , Svetlana U. Bairamkulova 3 , Vladimir G. Onipchenko 1, 2, 3
Botany ( IF 1.0 ) Pub Date : 2021-05-20 , DOI: 10.1139/cjb-2020-0235 Tatiana G. Elumeeva 1 , Dzhamal K. Tekeev 2 , Svetlana U. Bairamkulova 3 , Vladimir G. Onipchenko 1, 2, 3
Affiliation
Botany, Ahead of Print.
The alpine vegetation of Europe and the Caucasus has experienced substantial changes due to climate warming and reduced grazing. Exposed ridge communities, such as alpine heaths, are presumed to be less vulnerable to such processes. Herein, we analyze long-term dynamics (over 37 years) of an alpine lichen heath in the Teberda State Biosphere Reserve, Karachaevo-Cherkessian Republic, Russia. We counted the shoots of all vascular plants present on permanent plots. Autocorrelated linear regressions, a non-metric multidimensional scaling ordination, and a fourth-corner analysis were applied to characterize the relationships between shoot numbers, climate variables (temperatures and precipitation), functional traits, and species strategies. Nine species, including dominant Festuca ovina L. and Antennaria dioica (L.) Gaertn., increased their abundances, whereas Carex spp. were observed to decrease. The overall dynamics were mainly driven by increasing mean temperatures during the growing season (July and August). None of the changes observed in the selected traits were correlated with increasing or decreasing numbers of species; however, some traits (plant height, specific root length, specific leaf area, and leaf carbon content) were potentially associated with climate variables. The observed dynamics suggested an overall increase in the abundance of herbaceous plants. Generally, our results support “greening” effects in tundra and alpine biomes.
中文翻译：
高加索西北部 Teberda 国家生物圈保护区高山地衣荒地的长期自然动态
植物学，超前印刷。
由于气候变暖和放牧减少，欧洲和高加索的高山植被发生了重大变化。据推测，暴露的山脊群落，如高山荒地，不太容易受到此类过程的影响。在此，我们分析了俄罗斯卡拉恰沃-切尔克斯共和国 Teberda 国家生物圈保护区高山地衣荒地的长期动态（超过 37 年）。我们计算了永久性地块上所有维管植物的枝条。应用自相关线性回归、非度量多维尺度排序和第四角分析来表征芽数、气候变量（温度和降水）、功能性状和物种策略之间的关系。九个物种，包括占优势的 Festuca ovina L. 和 Antennaria dioica (L.) Gaertn.，增加了它们的丰度，而 Carex spp。观察到减少。总体动态主要受生长季节（7 月和 8 月）平均气温升高的驱动。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。
更新日期：2021-05-20
The alpine vegetation of Europe and the Caucasus has experienced substantial changes due to climate warming and reduced grazing. Exposed ridge communities, such as alpine heaths, are presumed to be less vulnerable to such processes. Herein, we analyze long-term dynamics (over 37 years) of an alpine lichen heath in the Teberda State Biosphere Reserve, Karachaevo-Cherkessian Republic, Russia. We counted the shoots of all vascular plants present on permanent plots. Autocorrelated linear regressions, a non-metric multidimensional scaling ordination, and a fourth-corner analysis were applied to characterize the relationships between shoot numbers, climate variables (temperatures and precipitation), functional traits, and species strategies. Nine species, including dominant Festuca ovina L. and Antennaria dioica (L.) Gaertn., increased their abundances, whereas Carex spp. were observed to decrease. The overall dynamics were mainly driven by increasing mean temperatures during the growing season (July and August). None of the changes observed in the selected traits were correlated with increasing or decreasing numbers of species; however, some traits (plant height, specific root length, specific leaf area, and leaf carbon content) were potentially associated with climate variables. The observed dynamics suggested an overall increase in the abundance of herbaceous plants. Generally, our results support “greening” effects in tundra and alpine biomes.
中文翻译：
高加索西北部 Teberda 国家生物圈保护区高山地衣荒地的长期自然动态
植物学，超前印刷。
由于气候变暖和放牧减少，欧洲和高加索的高山植被发生了重大变化。据推测，暴露的山脊群落，如高山荒地，不太容易受到此类过程的影响。在此，我们分析了俄罗斯卡拉恰沃-切尔克斯共和国 Teberda 国家生物圈保护区高山地衣荒地的长期动态（超过 37 年）。我们计算了永久性地块上所有维管植物的枝条。应用自相关线性回归、非度量多维尺度排序和第四角分析来表征芽数、气候变量（温度和降水）、功能性状和物种策略之间的关系。九个物种，包括占优势的 Festuca ovina L. 和 Antennaria dioica (L.) Gaertn.，增加了它们的丰度，而 Carex spp。观察到减少。总体动态主要受生长季节（7 月和 8 月）平均气温升高的驱动。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。在所选性状中观察到的任何变化都与物种数量的增加或减少无关；然而，一些性状（植物高度、特定根长、特定叶面积和叶碳含量）可能与气候变量有关。观察到的动态表明草本植物的丰度总体增加。一般来说，我们的结果支持苔原和高山生物群落中的“绿化”效应。
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