Vieira Marcos Costa, Cianciaruso Marcus Vinicius, Almeida-Neto Mário
Programa de Pós-Graduação em Ecologia e Evolução, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
PLoS One. 2013 Nov 29;8(11):e81242. doi: 10.1371/journal.pone.0081242. eCollection 2013.
Plant-pollinator coextinctions are likely to become more frequent as habitat alteration and climate change continue to threaten pollinators. The consequences of the resulting collapse of plant communities will depend partly on how quickly plant functional and phylogenetic diversity decline following pollinator extinctions. We investigated the functional and phylogenetic consequences of pollinator extinctions by simulating coextinctions in seven plant-pollinator networks coupled with independent data on plant phylogeny and functional traits. Declines in plant functional diversity were slower than expected under a scenario of random extinctions, while phylogenetic diversity often decreased faster than expected by chance. Our results show that plant functional diversity was relatively robust to plant-pollinator coextinctions, despite the underlying rapid loss of evolutionary history. Thus, our study suggests the possibility of uncoupled responses of functional and phylogenetic diversity to species coextinctions, highlighting the importance of considering both dimensions of biodiversity explicitly in ecological studies and when planning for the conservation of species and interactions.
随着栖息地改变和气候变化持续威胁传粉者，植物 - 传粉者共同灭绝可能会变得更加频繁。植物群落由此崩溃的后果将部分取决于传粉者灭绝后植物功能和系统发育多样性下降的速度。我们通过模拟七个植物 - 传粉者网络中的共同灭绝，并结合植物系统发育和功能性状的独立数据，研究了传粉者灭绝的功能和系统发育后果。在随机灭绝的情况下，植物功能多样性的下降比预期要慢，而系统发育多样性的下降往往比偶然预期的要快。我们的结果表明，尽管进化历史在迅速丧失，但植物功能多样性对植物 - 传粉者共同灭绝相对稳健。因此，我们的研究表明功能和系统发育多样性对物种共同灭绝可能会有不同的反应，强调了在生态研究以及规划物种和相互作用的保护时明确考虑生物多样性这两个维度的重要性。
