Further support for thermal ecosystem engineering by wandering albatross

Haupt T.M., Sinclair B.J., Shaw, Justine D. and Chown, Steven L. (2015) Further support for thermal ecosystem engineering by wandering albatross. Antarctic Science, 28 1: 35-43. doi:10.1017/S0954102015000383


Author Haupt T.M.
Sinclair B.J.
Shaw, Justine D.
Chown, Steven L.
Title Further support for thermal ecosystem engineering by wandering albatross
Journal name Antarctic Science   Check publisher's open access policy
ISSN 1365-2079
0954-1020
Publication date 2015-09-17
Year available 2015
Sub-type Article (original research)
DOI 10.1017/S0954102015000383
Open Access Status Not Open Access
Volume 28
Issue 1
Start page 35
End page 43
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Collection year 2016
Language eng
Formatted abstract
On sub-Antarctic Marion Island, wandering albatross (Diomedea exulans) nests support high abundances of tineid moth, Pringleophaga marioni, caterpillars. Previous work proposed that the birds serve as thermal ecosystem engineers by elevating nest temperatures relative to ambient, thereby promoting growth and survival of the caterpillars. However, only 17 days of temperature data were presented previously, despite year-long nest occupation by birds. Previous sampling was also restricted to old and recently failed nests, though nests from which chicks have recently fledged are key to understanding how the engineering effect is realized. Here we build on previous work by providing nest temperature data for a full year and by sampling all three nest types. For the full duration of nest occupancy, temperatures within occupied nests are significantly higher, consistently by c. 7°C, than those in surrounding soils and abandoned nests, declining noticeably when chicks fledge. Caterpillar abundance is significantly higher in new nests compared to nests from which chicks have fledged, which in turn have higher caterpillar abundances than old nests. Combined with recent information on the life history of P. marioni, our data suggest that caterpillars are incidentally added to the nests during nest construction, and subsequently benefit from an engineering effect.
Keyword abundance
detritivore
development
microclimate
soil biology
survival
thermal biology
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Biological Sciences Publications
 
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