DOI: 10.1016/j.palaeo.2015.09.033
论文题名: Seasonal changes in stable carbon and nitrogen isotope compositions of bat guano (Guadeloupe)
作者: Royer A. ; Queffelec A. ; Charlier K. ; Puech E. ; Malaizé B. ; Lenoble A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 440 起始页码: 524
结束页码: 532
语种: 英语
英文关键词: Carbon isotope compositions
; Climate
; Guano
; Nitrogen isotope compositions
; Seasonal variations
英文摘要: Stable isotope compositions of fossil bat guano have recently been developed as a proxy for reconstructing terrestrial paleoenvironments. However, our understanding of exactly how accurately these isotope compositions reflect seasonal variations remains limited. Here, we present a study of modern guano of phytophagous bats collected monthly over a one-year period at two roosting sites in Guadeloupe. The aim is to assess the degree to which seasonal climate and environmental variations are reflected in carbon and nitrogen isotope compositions from bat guano, as well as to evaluate the potential use of guano from phytophagous bats as a paleoenvironmental record. Our results show that stable isotope compositions vary locally, suggesting that guano of phytophagous bats accurately records local environmental conditions. Additionally, stable isotope compositions reflect seasonal variations influencing bat diet that lead to modifications of up to 2‰ of the carbon isotope compositions from feces. However, these variations are not correlated solely with climate variables as there is no straightforward relationship between climate, vegetation and bat diet over a one-year period. Moreover, these seasonal variations drive one of the bat colonies to occasionally consume insects, which can be traced as a seasonal shift in %N (up to 4.5%) and carbon isotope compositions (up to 5.6‰). Seasonal changes in isotope compositions are still lower than expected variations from fossil feces, confirming the potential use of feces from phytophagous bats as a reliable paleoenvironmental proxy. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68736
Appears in Collections: 过去全球变化的重建
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作者单位: Université de Bordeaux, PACEA UMR CNRS 5199, Allée Geoffroy St Hilaire, CS 50 023, Pessac, France; Université de Bordeaux, EPOC UMR CNRS 5805, Allée Geoffroy St Hilaire, CS 50 023, Pessac, France
Recommended Citation:
Royer A.,Queffelec A.,Charlier K.,et al. Seasonal changes in stable carbon and nitrogen isotope compositions of bat guano (Guadeloupe)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,440