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Climate change disrupts local adaptation and favours upslope migration.
Ecol Lett ; 23(1): 181-192, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31729141
ABSTRACT
Contemporary climate change is proceeding at an unprecedented rate. The question remains whether populations adapted to historical conditions can persist under rapid environmental change. We tested whether climate change will disrupt local adaptation and reduce population growth rates using the perennial plant Boechera stricta (Brassicaceae). In a large-scale field experiment conducted over five years, we exposed > 106 000 transplants to historical, current, or future climates and quantified fitness components. Low-elevation populations outperformed local populations under simulated climate change (snow removal) across all five experimental gardens. Local maladaptation also emerged in control treatments, but it was less pronounced than under snow removal. We recovered local adaptation under snow addition treatments, which reflect historical conditions. Our results revealed that low elevation populations risk rapid decline, whereas upslope migration could enable population persistence and expansion at higher elevation locales. Local adaptation to historical conditions could increase vulnerability to climate change, even for geographically widespread species.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Mudança Climática / Brassicaceae Aspecto clínico: Etiologia Idioma: Inglês Revista: Ecol Lett Ano de publicação: 2020 Tipo de documento: Artigo País de afiliação: Estados Unidos