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The biogeochemistry of insectivorous cave guano: a case study from insular Southeast Asia

Wurster, Christopher M., Munksgaard, Niels, Zwart, Costijn and Bird, Michael (2015). The biogeochemistry of insectivorous cave guano: a case study from insular Southeast Asia. Biogeochemistry,124(1-Mar):163-175.

Document type: Journal Article
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IRMA ID 84376995xPUB205
Title The biogeochemistry of insectivorous cave guano: a case study from insular Southeast Asia
Author Wurster, Christopher M.
Munksgaard, Niels
Zwart, Costijn
Bird, Michael
Journal Name Biogeochemistry
Publication Date 2015
Volume Number 124
Issue Number 1-Mar
ISSN 0168-2563   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84930273831
Start Page 163
End Page 175
Total Pages 13
Place of Publication Netherlands
Publisher Springer Netherlands
HERDC Category C1 - Journal Article (DIISR)
Abstract Cave guano derived from insectivorous bats and birds contain unique geochemical and mineralogical signatures. We investigated the mineralogy, pH, C, N and metal abundance patterns of cave guano spatially and temporally (with depth) along a W–E transect in Malaysia and Palawan from five remote cave sites, each housing large populations of bats and Aerodramus spp.(cave swiftlets). Guano deposits were rich in phosphate and/or sulphate minerals (e.g., gypsum, bassanite) with leucophosphite, spheniscidite, and variscite present in most profiles. Metal abundances measured from modern and ancient bat guano revealed high concentrations of transition metals relative to the local environment. Highly enriched metals, however, were associated with phosphate rather than sulphate minerals. Copper and Zn were enriched in all profiles, whereas other metals were associated with specific caves consistent with known local mineral resources. For example, Sn, Pb, and Rb were particularly enriched in Batu Cave, located in the Peninsular Malaysian granitic tin belt, whereas Ni and Cr were high in regions associated with ultramafic ophiolites and Ni-laterites found on Palawan.
Keywords Biomonitor
Contaminant
Faeces
Metals
Exploration
DOI http://dx.doi.org/10.1007/s10533-015-0089-0   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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