Global intraspecific trait–climate relationships for grasses are linked to a species' typical form and function
Global intraspecific trait–climate relationships for grasses are linked to a species' typical form and function
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草类的全球种内性状与气候关系与物种的典型形态和功能有关
DOI：
10.1111/ecog.06586
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发表时间：
2023
期刊：
影响因子：
5.9
通讯作者：
Sandel, Brody
中科院分区：
文献类型：
--
作者：
Griffin‐Nolan, Robert J.;Sandel, Brody
植物性状可用于预测物种如何响应环境变化和/或影响生态系统特性。了解物种内部和气候梯度之间特征的变化程度对于了解物种如何应对气候变化尤为重要。我们探讨了气候是否驱动三个性状（比叶面积（SLA），株高和叶氮含量（Nmass））在122个草种（科：禾本科）的种内性状变异的空间格局，在六大洲的组合分布。我们测试的假设，种内性状的敏感性（即斜率）的气候跨越空间将与物种的典型形式和功能（如叶经济学，身高和寿命）。我们观察到积极和消极的种内性状对气候的反应，跨越零的降水，温度和气候季节性的物种的斜率系数的分布。正如假设的那样，不同物种的斜率系数的变化部分解释了叶经济学和寿命。例如，与具有低Nmass的物种相比，具有富含氮的叶子的获取性物种在温暖的地区生长得更高，并且产生具有更高SLA的叶子。与多年生植物相比，一年生草投资于叶片具有较高的SLA，但在降水季节性（PS）高的地区，高度和Nmass下降。因此，虽然气候对性状表达的影响可能在第一次出现特质，性状气候斜率系数的变化至少部分解释了物种的典型形式和功能。总的来说，我们的研究结果表明，一个物种的平均位置沿着一个轴的性状变异（如叶经济学）可以影响性状沿着一个单独的轴的变化（如植物大小）如何响应气候的空间变化。
Plant traits are useful for predicting how species may respond to environmental change and/or influence ecosystem properties. Understanding the extent to which traits vary within species and across climatic gradients is particularly important for understanding how species may respond to climate change. We explored whether climate drives spatial patterns of intraspecific trait variation for three traits (specific leaf area (SLA), plant height, and leaf nitrogen content (Nmass)) across 122 grass species (family: Poaceae) with a combined distribution across six continents. We tested the hypothesis that the sensitivity (i.e. slope) of intraspecific trait responses to climate across space would be related to the species' typical form and function (e.g. leaf economics, stature and lifespan). We observed both positive and negative intraspecific trait responses to climate with the distribution of slope coefficients across species straddling zero for precipitation, temperature and climate seasonality. As hypothesized, variation in slope coefficients across species was partially explained by leaf economics and lifespan. For example, acquisitive species with nitrogen‐rich leaves grew taller and produced leaves with higher SLA in warmer regions compared to species with low Nmass. Compared to perennials, annual grasses invested in leaves with higher SLA yet decreased height and Nmass in regions with high precipitation seasonality (PS). Thus, while the influence of climate on trait expression may at first appear idiosyncratic, variation in trait–climate slope coefficients is at least partially explained by the species' typical form and function. Overall, our results suggest that a species' mean location along one axis of trait variation (e.g. leaf economics) could influence how traits along a separate axis of variation (e.g. plant size) respond to spatial variation in climate.
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DOI：
10.6084/m9.figshare.c.3843841.v1
发表时间：
2018
期刊：
--
影响因子：
--
作者：
Ç. Tavşanoğlu
通讯作者：
Ç. Tavşanoğlu
复杂森林地形中基于微气候的物种分布模型表明气候变化下存在广泛的隐秘避难所
影响因子：
6.4
作者：
Jordan R. Stark;J. Fridley;J. Gill
通讯作者：
J. Gill
影响因子：
2.3
作者：
Chieppa, Jeff;Power, Sally A.;Nielsen, Uffe N.
通讯作者：
Nielsen, Uffe N.
影响因子：
2.6
作者：
Segrestin J;Sartori K;Navas ML;Kattge J;Díaz S;Garnier E
通讯作者：
Garnier E
影响因子：
1.8
作者：
M. Navas;Julie Moreau
通讯作者：
Julie Moreau