Bird-plant interactions and vulnerability to biological invasions

作     者：Adam D.Chupp Loretta L.Battaglia 

作者机构：Department of Plant BiologySouthern Illinois UniversityLife Sciences IIMail Code 6509CarbondaleIL 62901-6509USA 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2016年第9卷第6期

页      面：692-702页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：the National Estuarine Reserve System under an award from the Estuarine Reserves Division Office of Ocean and Coastal Resource Management National Ocean Service National Oceanic and Atmospheric Administration(Award#NA11NOS4200080) 

主　　题：bird frugivory forest pests and pathogens Cinnamomum camphora laurel wilt disease Persea borbonia 

摘      要：Aims Species interactions regulate the invasiveness of non-native species and as declines of native tree species escalate,exotic tree species that offer supplementary resources to animal seed-dispersers should expand their distributions as they fill ecological *** primary objective was to forecast impacts from an imminent biological invasion(laurel wilt disease)by quantifying resources provided by native(threatened)and exotic fruits(disease-resistant)and associated bird foraging *** In the southeastern USA,we tested for redundancy among the resources provided by native and exotic fruits to overwintering *** between abundant subcanopy species Persea borbonia(native)and Cinnamomum camphora(exotic)were paramount considering the widespread disease-induced decline of ***,and the biological and phylogenetic similarities between these *** two winter survey periods,we quantified fruit removal and documented bird species using motion-activated cameras in the *** and chemical fruit characteristics were also *** Findings Foraging bouts on both *** and *** fruits were documented for four native bird *** was no difference in selectivity between fruit types during Year 1 of our survey,but there was a significant preference for *** fruit in Year 2;the change in preference was correlated with significantly lower temperatures in Year *** the pulp/seed ratio and moisture content differed,the nutritional content of fruit pulp(g/100 g)was similar between fruit *** the apparent redundancy among these native and exotic fruit resources,we forecast increases in the consumption and dispersal of exotic propagules following the widespread laurel wilt disease-induced decline of *** and other native fruit bearing members of *** empirically based prediction is among the first to document exotic forest pathogens as indirect threats to native bird-plant int