Leaf size of woody dicots predicts ecosystem primary productivity.,Ecology Letters

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Leaf size of woody dicots predicts ecosystem primary productivity.
Ecology Letters ( IF 8.8 ) Pub Date : 2020-04-06 , DOI: 10.1111/ele.13503
Yaoqi Li ₁ , Peter B Reich _{2,

3} , Bernhard Schmid ₄ , Nawal Shrestha _{1,

5} , Xiao Feng ₆ , Tong Lyu ₁ , Brian S Maitner ₇ , Xiaoting Xu _{1,

8} , Yichao Li ₁ , Dongting Zou ₁ , Zheng-Hong Tan ₉ , Xiangyan Su ₁ , Zhiyao Tang ₁ , Qinghua Guo ₁₀ , Xiaojuan Feng ₁₀ , Brian J Enquist _{6,

11} , Zhiheng Wang ₁

Affiliation

Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
Department of Forest Resources, University of Minnesota, St. Paul, MN, 55108, USA.
Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia.
Department of Geography, Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
Institute of Innovation Ecology, Lanzhou University, Lanzhou, 730000, China.
Institute of the Environment, University of Arizona, Tucson, Arizona, 85721, USA.
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, 85721, USA.
Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China.
College of Environment and Ecology, Hainan University, Haikou, Hainan, 570228, China.
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
The Santa Fe Institute, Santa Fe, NM, 87501, USA.

A key challenge in ecology is to understand the relationships between organismal traits and ecosystem processes. Here, with a novel dataset of leaf length and width for 10 480 woody dicots in China and 2374 in North America, we show that the variation in community mean leaf size is highly correlated with the variation in climate and ecosystem primary productivity, independent of plant life form. These relationships likely reflect how natural selection modifies leaf size across varying climates in conjunction with how climate influences canopy total leaf area. We find that the leaf size-primary productivity functions based on the Chinese dataset can predict productivity in North America and vice-versa. In addition to advancing understanding of the relationship between a climate-driven trait and ecosystem functioning, our findings suggest that leaf size can also be a promising tool in palaeoecology for scaling from fossil leaves to palaeo-primary productivity of woody ecosystems.

更新日期：2020-04-06

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