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Ecological function maintained despite mesomammal declines
DOI:10.1038/s41598-024-66534-8.png)
摘要
En 中文
Mid-sized mammals (i.e., mesomammals) fulfill important ecological roles, serving as essential scavengers, predators, pollinators, and seed dispersers in the ecosystems they inhabit. Consequently, declines in mesomammal populations have the potential to alter ecological processes and fundamentally change ecosystems. However, ecosystems characterized by high functional redundancy, where multiple species can fulfil similar ecological roles, may be less impacted by the loss of mesomammals and other vertebrates. The Greater Everglades Ecosystem in southern Florida is a historically biodiverse region that has recently been impacted by multiple anthropogenic threats, most notably the introduction of the Burmese python (Python molurus bivittatus). Since pythons became established, mesomammal populations have become greatly reduced. To assess whether these declines in mesomammals have affected two critical ecosystem functions-scavenging and frugivory-we conducted experiments in areas where mesomammals were present and absent. We did not observe significant differences in scavenging or frugivory efficiency in areas with and without mesomammals, but we did observe significant differences in the communities responsible for scavenging and frugivory. Despite the observed evidence of redundancy, the changes in community composition could potentially lead to indirect consequences on processes like seed dispersal and disease dynamics within this ecosystem, emphasizing the need for further study.
Keyword:
SEED DISPERSERS
SPECIES REDUNDANCY
EVERGLADES
DIVERSITY
IMPACTS
MAMMALS
MESOPREDATORS
VERTEBRATES
COMPENSATE
FRUGIVORY
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期刊
IF:
3.9
论文数:
27.9W
被引数:
83.5W
机构
引用论文
Trait-associated loss of frugivores in fragmented forest does not affect seed removal rates
JOURNAL OF ECOLOGY
IF5.6
Severe mammal declines coincide with proliferation of invasive Burmese pythons in Everglades National Park哺乳动物的严重下降与大沼泽地国家公园中侵入性缅甸蟒蛇的扩散相吻合

