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Interaction network between frugivorous birds and zoochorous plants in cloud forest riparian strips immersed in anthropic landscapes

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Avian Research 2022年第3期13卷 311-320页

作者： Omar A.Hernández-Dávila Javier Laborde Vinicio J.Sosa Cecilia Díaz-Castelazo Instituto de Ecología A.C.Red de Ecología FunctionalCarretera Antigua a CoatepecNo.351El HayaXalapaVeracruz C.P91073Mexico Instituto de Ecología A.C.Red de Interacciones Multitr oficasCarretera Antigua a CoatepecNo.351El HayaXalapaVer.C.P91073Mexico

Worldwide,tropical montane cloud forest is one of the most important and biodiverse ecosystems;however,it is also one of those most threatened by anthropic *** activities lead to a fragmented,deforested landscape with narrow riparian forest strips immersed in an agricultural matrix dominated by ***,we characterize the interaction network between frugivorous birds and zoochorous plants in riparian strips of cloud forest in deforested landscapes of Central Veracruz,*** characterize the network of this mutualistic interaction,we estimated network-and species-level metrics using the Bipartite R ***,modularity and robustness were used to describe network *** measures of degree,closeness,betweenness centrality and their relative contribution to nestedness were used to determine the importance of each bird/plant species to the network’s *** interaction network has 24 species of birds and 30 species of plants,with low connectance(0.11),low nestedness(11.53),and intermediate but not significant modularity(0.49).The bird species most important to network stability were Chlorospingus flavopectus,Myadestes occidentalis,and Catharus *** most important plants were Conostegia xalapensis,***,and Rubus *** robustness varied from 0.36 to 0.86 and its stability is compromised when species of birds or plants with the highest values of centrality are removed,with plant removal more *** strips of cloud forest crossing deforested areas maintain a relatively rich set of birds that disperse the seeds of many forest plants,thus they are crucial to the preservation of this mutualistic network in anthropic *** stability is severely undermined by the loss of any of the few species—whether birds or plants—with high centrality *** most important plants for this stability are pioneer tree and shrub species that provide food for several bird species,and they

关键词： Frugivory Keystone species riparian corridors Seed dispersal Vegetation corridors

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