DOI: 10.1016/j.palaeo.2016.04.012
论文题名: Diet and locomotion, but not body size, differentiate mammal communities in worldwide tropical ecosystems
作者: Lintulaakso K. ; Kovarovic K.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 454 起始页码: 20
结束页码: 29
语种: 英语
英文关键词: CAP
; Mammal community structure
; NPMANOVA
; PERMANOVA
; SIMPER
; Taxon-free analysis
英文摘要: Aim: To test whether tropical habitat groups across the world can be differentiated by using taxon-free mammalian community structures and to discuss the implications of this analysis for palaeoecological community studies. Materials and methods: We used mammalian community data for 169 localities, which were assigned a priori to hierarchical Olson (1983) vegetation categories. Species over 500 g were classified into dietary, locomotion, and body mass groups and the resulting group structures were analysed using community structure analyses (NPMANOVA, CAP, SIMPER). Results: The test results show that the mammalian community structures are significantly different between all of Olson's categories. These differences are highest at Olson's major and minor ecosystem levels, and require the least number of variable categories. At the vegetation level, the number of variable categories required to distinguish between them becomes higher. Of the dietary groups, the number of frugivore-granivores, frugivore-omnivores, grazers and mixed feeders contribute most to these differences, while the number of arboreal, arboreal-terrestrial and subterranean-terrestrial species are the key locomotor groups. Body mass was not a good discriminator. Main conclusions: As general ecosystem categories are broken down into more precisely defined habitats, it requires more detailed knowledge of the species adaptations to distinguish between them. Many of Olson's vegetation groups represent a continuum of cover that are, at least at the worldwide comparison, too detailed to differentiate when broad generalities are sought. We suggest using three worldwide tropical major ecosystems in mammalian community structure analyses: "Humid, closed forests", "Seasonal or interrupted forests and grasslands", and "Seasonal, open drylands". Our results also demonstrate that community structures defined by both dietary and locomotor adaptations are powerful discriminators of tropical ecosystems and habitats across the continents we examined, but body mass should be interpreted with caution when the research question pertains to multiple continents. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68390
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geosciences and Geography, University of Helsinki, Gustaf Hällströmin katu 2a, Helsinki, Finland; Department of Anthropology, Durham University, South Road, Durham, United Kingdom
Recommended Citation:
Lintulaakso K.,Kovarovic K.. Diet and locomotion, but not body size, differentiate mammal communities in worldwide tropical ecosystems[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,454