Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/41303
DC FieldValueLanguage
dc.contributor.authorHeleno, Ruben-
dc.contributor.authorCeia, Ricardo S.-
dc.contributor.authorRAMOS, JAIME A.-
dc.contributor.authorMemmott, Jane-
dc.date.accessioned2017-05-11T21:29:26Z-
dc.date.available2017-05-11T21:29:26Z-
dc.date.issued2009-
dc.identifier.urihttps://hdl.handle.net/10316/41303-
dc.description.abstractThe replacement of native plants by alien species is likely to affect other trophic levels, particularly phytophagous insects. Nevertheless, the effect of alien plants on insect biomass has not yet been quantified. Given their critical role in transferring energy from plants to higher trophic levels, if alien plants do affect insect biomass, this could have far-reaching consequences for community structure. We used 35 food webs to evaluate the impacts of alien plants on insect productivity in a native forest in the Azores. Our food webs quantified plants, insect herbivores, and their parasitoids, which allowed us to test the effects of alien plants on species richness and evenness, insect abundance, insect biomass, and food-web structure. Species richness of plants and insects, along with plant species evenness, declined as the level of plant invasion increased. Nevertheless, none of the 4 quantitative food-web descriptors (number of links, link density, connectance, and interaction evenness) varied significantly with plant invasion independent of the size of the food web. Overall, insect abundance was not significantly affected by alien plants, but insect biomass was significantly reduced. This effect was due to the replacement of large insects on native plants with small insects on alien plants. Furthermore, the impact of alien plants was sufficiently severe to invert the otherwise expected pattern of species-richness decline with increased elevation. We predict a decrease in insect productivity by over 67% if conservation efforts fail to halt the invasion of alien plants in the Azores.por
dc.language.isoporpor
dc.rightsopenAccesspor
dc.subjectAnimalspor
dc.subjectBiodiversitypor
dc.subjectBiomasspor
dc.subjectInsectspor
dc.subjectPlantspor
dc.subjectPopulation Dynamicspor
dc.subjectConservation of Natural Resourcespor
dc.subjectFood Chainpor
dc.titleEffects of Alien Plants on Insect Abundance and Biomass: a Food-Web Approachpor
dc.typearticle-
degois.publication.firstPage410por
degois.publication.lastPage419por
degois.publication.issue2por
degois.publication.titleConservation Biologypor
dc.peerreviewedyespor
dc.identifier.doi10.1111/j.1523-1739.2008.01129.x-
degois.publication.volume23por
uc.controloAutoridadeSim-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypearticle-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.languageiso639-1pt-
crisitem.author.researchunitCFE - Centre for Functional Ecology - Science for People & the Planet-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.orcid0000-0002-4808-4907-
crisitem.author.orcid0000-0002-9533-987X-
Appears in Collections:I&D CFE - Artigos em Revistas Internacionais
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