Heterogeneous trait responses of Páramo plant species and community to experimental warming

Understanding climate change impact on the functional trait composition, and hence ecosystem functioning of tropical alpine regions is critical for predicting biodiversity responses. We tested the effects of a decade of warming on the morphological, chemical, and genomic traits of Páramo species using open-top-chambers (OTC). We conducted vegetation surveys and collected samples from individuals inside and outside the OTC plots to estimate differences between treatments (warming vs control). Vegetation cover decreased over time in both treatments suggesting a potential decline in soil moisture in our study area. Warming led to a reorganisation of the trait space and trait network structure. Nevertheless, we did not find significant differences in trait values or the direction of change between species whose % vegetation cover increased in OTC (or decreased less) compared to control over time. Community-weighted mean values of plant height, leaf area, leaf dry matter content, genome size..., Study area and experimental design The study area is located in the Páramos of the Yanacocha Reserve, Ecuador, at 4,200 m a.s.l (0.13518°S, 78.57458°W). The passive warming experiment was installed in 2012 and consists of five parallel monitoring blocks, each of them containing 40 1 m2 plots delimited for different treatments. Plots assigned to a warming treatment were surrounded by a 3 x 3 m hexagonal open-top chamber (OTC). Control plots and those under warming treatment (OTC plots) were randomly chosen across the five blocks. Our analyses are based on the data from 17 OTC plots and 20 control plots. For details on the climate in the study area refer to the published paper. Field data collection Vegetation surveys: Before installing the OTCs, a baseline survey was conducted in 2012, recording vegetation cover (%) of each seed plant species per plot. A further five vegetation surveys were conducted on the control and OTC plots in 2013, 2014, 2016 (a few plots for this survey were measu..., , # \"Dataset for paper Heterogeneous trait responses of Páramo plant species and community to experimental warming\" # Summary of the study: Understanding climate change impact on the functional trait composition, and hence ecosystem functioning of tropical alpine regions is critical for predicting biodiversity responses. We tested the effects of a decade of warming on the morphological, chemical and genomic traits of Páramo species using open-top-chambers (OTC). We conducted vegetation surveys and collected samples from individuals inside and outside the OTC plots to estimate differences between treatments (warming vs control). Vegetation cover decreased over time in both treatments suggesting a potential decline in soil moisture in our study area. Warming led to a reorganisation of the trait space and trait network structure. Species showed a wide range of responses to warming, with significant changes across different trait combinations. Nevertheless, we did not find significant diffe...,了解气候变化对热带高山地区功能性状组成（functional trait composition）进而对生态系统功能的影响，对于预测生物多样性响应至关重要。我们利用开顶式增温箱（open-top-chambers, OTC）开展了为期十年的增温实验，检验其对帕拉莫（Páramo）物种形态、化学及基因组性状的影响。我们开展了植被调查，并在增温箱样地内外的植株上采集样本，以估算增温与对照两种处理间的差异。两种处理下的植被盖度均随时间推移下降，这表明本研究区域的土壤水分可能存在下降趋势。增温处理引发了性状空间与性状网络结构的重构。不过，相较于对照样地，在增温箱中植被盖度随时间上升（或下降幅度更小）的物种，其性状值及变化方向并未出现显著差异。植物株高、叶面积、叶干物质含量、基因组大小的群落加权均值（community-weighted mean）…… # 研究区域与实验设计 本研究区域位于厄瓜多尔亚纳科查保护区（Yanacocha Reserve）的帕拉莫（Páramo）地带，海拔4200米（南纬0.13518°，西经78.57458°）。该被动增温实验于2012年启动，包含5个平行监测样区，每个样区设有40个1平方米的样地，用于设置不同处理。接受增温处理的样地被3×3米的六边形开顶式增温箱（OTC）环绕。对照样地与增温样地（OTC样地）均在5个样区中随机选取。本分析基于17个OTC样地与20个对照样地的数据。如需了解研究区域的气候详情，请参阅已发表的论文。 # 野外数据采集 ## 植被调查 2012年安装增温箱前，我们开展了基线调查，记录每个样地内每种种子植物的植被盖度（%）。随后分别于2013、2014、2016年对对照样地与OTC样地开展了五次植被调查（本次调查的部分样地仅完成了测量……）， # "Dataset for paper Heterogeneous trait responses of Páramo plant species and community to experimental warming" # 研究概述： 了解气候变化对热带高山地区功能性状组成及由此决定的生态系统功能的影响，是预测生物多样性响应的关键环节。本研究借助开顶式增温箱（OTC），探究了为期十年的增温处理对帕拉莫物种形态、化学与基因组性状的作用。我们通过植被调查并在OTC样地内外采集植株样本，量化了增温与对照处理间的差异。两种处理下的植被盖度均随时间降低，暗示本研究区域的土壤水分存在潜在下降。增温处理重塑了性状空间与性状网络结构。不同物种对增温的响应跨度较大，不同性状组合间存在显著变化。然而，我们并未发现显著的差异……