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dc.contributor.authorCarroll, Tadhg
dc.contributor.authorCardou, Françoise
dc.contributor.authorDornelas, Maria
dc.contributor.authorThomas, Chris D
dc.contributor.authorVellend, Mark
dc.identifier.citationCarroll , T , Cardou , F , Dornelas , M , Thomas , C D & Vellend , M 2023 , ' Biodiversity change under adaptive community dynamics ' , Global Change Biology , vol. Early View , 16680 .
dc.identifier.otherJisc: 984488
dc.descriptionTC, MD, MV & CDT were funded by a Leverhulme Trust Research Centre - the Leverhulme Centre for Anthropocene Biodiversity (grant number: RC-2018-021). MV was supported by the Natural Sciences and Engineering Research Council of Canada.en
dc.description.abstractCompositional change is a ubiquitous response of ecological communities to environmental drivers of global change, but is often regarded as evidence of declining “biotic integrity” relative to historical baselines. Adaptive compositional change, however, is a foundational idea in evolutionary biology, whereby changes in gene frequencies within species boost population-level fitness, allowing populations to persist as the environment changes. Here, we present an analogous idea for ecological communities based on core concepts of fitness and selection. Changes in community composition (i.e., frequencies of genetic differences among species) in response to environmental change should normally increase the average fitness of community members. We refer to compositional changes that improve the functional match, or “fit,” between organisms' traits and their environment as adaptive community dynamics. Environmental change (e.g., land-use change) commonly reduces the fit between antecedent communities and new environments. Subsequent change in community composition in response to environmental changes, however, should normally increase community-level fit, as the success of at least some constituent species increases. We argue that adaptive community dynamics are likely to improve or maintain ecosystem function (e.g., by maintaining productivity). Adaptive community responses may simultaneously produce some changes that are considered societally desirable (e.g., increased carbon storage) and others that are undesirable (e.g., declines of certain species), just as evolutionary responses within species may be deemed desirable (e.g., evolutionary rescue of an endangered species) or undesirable (e.g., enhanced virulence of an agricultural pest). When assessing possible management interventions, it is important to distinguish between drivers of environmental change (e.g., undesired climate warming) and adaptive community responses, which may generate some desirable outcomes. Efforts to facilitate, accept, or resist ecological change require separate consideration of drivers and responses, and may highlight the need to reconsider preferences for historical baseline communities over communities that are better adapted to the new conditions.
dc.relation.ispartofGlobal Change Biologyen
dc.subjectSpecies turnoveren
dc.subjectAnthropocene environmentsen
dc.subjectCommunity ecologyen
dc.subjectAdaptive dynamicsen
dc.subjectEcosystem functionen
dc.subjectEnvironmental changeen
dc.subjectQH301 Biologyen
dc.subjectSDG 13 - Climate Actionen
dc.subjectSDG 15 - Life on Landen
dc.titleBiodiversity change under adaptive community dynamicsen
dc.typeJournal itemen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.institutionUniversity of St Andrews. Centre for Biological Diversityen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Fish Behaviour and Biodiversity Research Groupen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.description.statusPeer revieweden

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