DOI: 10.1111/gcb.13656
论文题名: Legacy effects and memory loss: how contingencies moderate the response of rocky intertidal biofilms to present and past extreme events
作者: Dal Bello M. ; Rindi L. ; Benedetti-Cecchi L.
刊名: Global Change Biology
出版年: 2017
卷: 23, 期: 8 起始页码: 3259
结束页码: 3268
语种: 英语
英文关键词: antecedent conditions
; biofilm
; ecological memory
; epilithic microphytobenthos
; extreme climatic events
; grazing
; hierarchical Bayesian model
; legacy effects
; temporal clustering
英文摘要: Understanding how historical processes modulate the response of ecosystems to perturbations is becoming increasingly important. In contrast to the growing interest in projecting biodiversity and ecosystem functioning under future climate scenarios, how legacy effects originating from historical conditions drive change in ecosystems remains largely unexplored. Using experiments in combination with stochastic antecedent modelling, we evaluated how extreme warming, sediment deposition and grazing events modulated the ecological memory of rocky intertidal epilithic microphytobenthos (EMPB). We found memory effects in the non-clustered scenario of disturbance (60 days apart), where EMPB biomass fluctuated in time, but not under clustered disturbances (15 days apart), where EMPB biomass was consistently low. A massive grazing event impacted on EMPB biomass in a second run of the experiment, also muting ecological memory. Our results provide empirical support to the theoretical expectation that stochastic fluctuations promote ecological memory, but also show that contingencies may lead to memory loss. © 2017 John Wiley & Sons Ltd 资助项目: Dal Bello, M.
; Department of Biology, University of Pisa, CoNISMa, Via Derna 1, Italy
; 电子邮件: dalbello@mit.edu
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60873
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, University of Pisa, CoNISMa, Via Derna 1, Pisa, Italy
Recommended Citation:
Dal Bello M.,Rindi L.,Benedetti-Cecchi L.. Legacy effects and memory loss: how contingencies moderate the response of rocky intertidal biofilms to present and past extreme events[J]. Global Change Biology,2017-01-01,23(8)