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Shrub canopy interception of diaspores dispersed by wind

Published online by Cambridge University Press:  17 December 2020

Xuanping Qin
Affiliation:
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China University of Chinese Academy of Sciences, Beijing100049, China
Zhimin Liu*
Affiliation:
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China
Minghu Liu
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Wei Liang
Affiliation:
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China
Carol C. Baskin
Affiliation:
Department of Biology, University of Kentucky, Lexington, KY40506, USA Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY40546, USA
Jerry M. Baskin
Affiliation:
Department of Biology, University of Kentucky, Lexington, KY40506, USA
Zhiming Xin
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Xinle Li
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Zhigang Wang
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Quanlai Zhou
Affiliation:
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China
Fengmin Luo
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Junliang Gao
Affiliation:
Experimental Center of Desert Forest, Chinese Academy of Forest, Dengkou015200, China
Gerile Naren
Affiliation:
Forestry Workstation, Forestry and Grassland Bureau of Hangjin, Ordos017400, China
*
Author for correspondence: Zhimin Liu, E-mail: zmliu@iae.ac.cn

Abstract

Interception by plant canopies during wind dispersal can affect the final destination of diaspores. However, how the interaction of wind speed, canopy type and diaspore attributes affects interception of diaspores by the plant canopy has rarely been studied. We investigated canopy interception for 29 species with different diaspore attributes, six canopy types and six wind speeds in controlled experiments in a wind tunnel. Shrub canopy interception of diaspores were controlled by wind speed and diaspore attributes, but the latter had a greater influence on canopy interception than the former. At low wind speed, diaspore wing loading had a large influence on canopy interception, whereas at high wind speed, diaspore projection area had a large influence. The chance of canopy interception at a particular wind speed was additionally affected by the type of canopy. This study increases our knowledge of the dispersal process, corrects the previous understanding of diaspore dispersal potential and improves the theoretical basis for predicting spatial pattern and dynamics of plant populations.

Type
Research Paper
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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