dc.contributor.author |
Brook, F.J. |
en |
dc.contributor.author |
McArdle, B.H. |
en |
dc.date.accessioned |
2009-08-25T05:59:43Z |
en |
dc.date.available |
2009-08-25T05:59:43Z |
en |
dc.date.issued |
1999 |
en |
dc.identifier.citation |
Journal of the Royal Society of New Zealand 29 (4), 407-434. 1999 |
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dc.identifier.issn |
0303-6758 |
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dc.identifier.other |
eid=2-s2.0-0033513506 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/4832 |
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dc.description |
An open access copy of this article is available from the publishers website. |
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dc.description.abstract |
Placostylus hongii (Lesson) is recorded from sites between Whangaroa and Whangarei on the mainland Northland coast, and from the Poor Knights, Chicken, Mokohinau and Great Barrier Islands offshore. There is considerable variation in shell morphology between the various populations, commonly with marked morphological divergence at a local scale but with overlapping variation overall across all populations of the taxon. Patterns of morphological variation show no clear geographic trends and are at least in part related to local environmental factors. Correlations are identified between shell shape and substratum type, and between shell sized and vegetation type. Placostylus hongii has a very restricted stratigraphic distribution in mainland Northland, with most if not all of the few known fossil populations post-dating Polynesian settlement at c. 900-700 years BP. We suggest that P. hongii populations on the Poor Knights and possibly also those on the Mokohinau Is. are endemic, whereas the mainland populations and those on Great Barrier and the Chicken Is. have originated from anthropic redistribution of snails in prehistoric time. A high proportion of the mainland P. hongii populations and some offshore island populations became extinct in the last few hundred years as a result of predation by introduced mammals and the modification and destruction of shrubland and forest habitat. |
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dc.publisher |
Royal Society Of New Zealand |
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dc.relation.ispartofseries |
Journal of the Royal Society of New Zealand |
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dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0303-6758/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.source.uri |
http://www.royalsociety.org.nz/publications/journals/nzjr/1999/026 |
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dc.title |
Morphological variation, biogeography and local extinction of the northern New Zealand landsnail Placostylus hongii (Gastropoda: Bulimulidae) |
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dc.type |
Journal Article |
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dc.subject.marsden |
Fields of Research::210000 Science-General |
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pubs.issue |
4 |
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pubs.begin-page |
407 |
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pubs.volume |
29 |
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dc.rights.holder |
Copyright: Royal Society of New Zealand |
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pubs.end-page |
434 |
en |