首页|Does pollinator dependence decrease along elevational gradients?

Does pollinator dependence decrease along elevational gradients?

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Plants have long been thought to be less dependent on pollinators for seed production at higher ele-vations due to adverse pollination environments.However,recent research has yet to consistently support the generality of this expectation.In this study,we asked whether pollinator dependence de-creases along an elevational gradient and how it varies with various reproductive traits.To answer these questions,we quantified pollinator-plant associations and various reproductive traits for 112 flowering plants spanning a large elevational gradient(990-4260 m a.s.l.)in the Qinghai-Tibet Plateau.We found that flowering plants in the Qinghai-Tibet Plateau region are highly dependent on pollinators for seed production(76.2％ of seed production was contributed by animal pollinators and 44.6％ of plants would produce no seed without pollinator visitation).Contrary to our expectation,there was no significant elevational gradient in pollinator dependence index.Although the pollinator dependence index was not significantly correlated with pollen limitation,flower size,floral longevity,or reward type,it was correlated with compatibility status and flowering time.These findings indicate that pollinator depen-dence does not decrease along an elevational gradient in the Qinghai-Tibet Plateau.Our study also highlights the severe vulnerability of flowering plant seed production to pollinator declines under global change in the Qinghai-Tibet Plateau region,particularly for early-flowering or self-incompatible plants growing at higher elevations(e.g.,subnival belt).

Global changePollen limitationPollinator declineQinghai-Tibet plateauSeed production

Yue-Wen Xu、Lu Sun、Rong Ma、Yong-Qian Gao、Hang Sun、Bo Song

展开 >

CAS Key Laboratory for Plant Diversity and Biogeography of East Asia/Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China

College of Life Sciences,Shaanxi Normal University,Xi'an 710119,China

Yunnan Forestry Technological College,Kunming 650224,China

Second Tibetan Plateau Scientific Expedition and Research programStrategic Priority Research Program of the Chinese Academy of SciencesNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYoung Academic and Technical Leader Raising Foundation of Yunnan ProvinceTenthousand Talents Program of Yunnan ProvinceYunnan Innovation Team Project

2019QZKK0502XDA2005020331770249320716692017HB062YNWR-QNBJ-2018-208202305AS350004

2023

10.1016/j.pld.2023.03.006

植物多样性(英文)
中国科学院昆明植物研究所，中国植物学会

植物多样性(英文)

CSTPCDCSCD北大核心
影响因子：0.617
ISSN：2096-2703
年,卷(期)：2023.45(4)
  • 2