The plants and birds of Stoltenhoff and Middle Islands, Tristan da Cunha

ABSTRACT Few scientific observations have been made at Middle and Stoltenhoff Islands, small (ca 10 ha) islands off the north coast of Nightingale Island, Tristan da Cunha. We recorded vascular plants and numbers of breeding birds on both islands in December 2009. Despite being smaller and more isol...

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Bibliographic Details
Published in:Polar Record
Main Authors: Ryan, Peter G., Glass, Norman, Ronconi, Robert A.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2010
Subjects:
General Earth and Planetary Sciences
Ecology
Geography, Planning and Development
Tristan
Middle Island
Middle Islands
Polar Record
Online Access:http://dx.doi.org/10.1017/s0032247410000112
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247410000112
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Summary:ABSTRACT Few scientific observations have been made at Middle and Stoltenhoff Islands, small (ca 10 ha) islands off the north coast of Nightingale Island, Tristan da Cunha. We recorded vascular plants and numbers of breeding birds on both islands in December 2009. Despite being smaller and more isolated than Middle Island, Stoltenhoff supported more species of plants, including Cotula moseleyi , previously thought to be endemic to Nightingale Island. Only one alien plant was found, Sonchus oleraceus . Populations of two albatross species apparently have decreased by at least half over the last 40 years, presumably due to mortality at sea. Stoltenhoff probably has the least disturbed habitat in the Tristan group, and strict controls are needed to prevent accidental introductions by anyone going ashore.

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