Probable long distance dispersal of Leptinella plumosa Hook.f. to Heard Island: habitat, status and discussion of its arrival

  title={Probable long distance dispersal of Leptinella plumosa Hook.f. to Heard Island: habitat, status and discussion of its arrival},
  author={Perpetua A. M. Turner and J. Scott and Ac Rozefelds},
  journal={Polar Biology},
During the 2003–2004 austral summer the number of vascular plant species recorded from Heard Island rose from 11 to 12 with the discovery of one small plant of Leptinella plumosa Hook.f. (Asteraceae), an indigenous subantarctic species. It is described and its habitat, likely status and possible means of arrival on the island are discussed. We conclude that the species probably arrived by natural means with a seabird as its most likely dispersal vector. The life history and biology of L… 

Restricted plant species on sub-Antarctic Macquarie and Heard Islands

It is argued that all three species are indigenous and arrived on their respective islands within the last 200 years by natural processes, most likely from warmer neighbouring islands, where these species have more extensive distributions.

Evidence for long-distance dispersal of Sophora microphylla to sub-Antarctic Macquarie Island

A seed probably of kowhai (Sophora microphylla), was found on a lake shore at Macquarie Island, showing how two consecutively acting long-distance dispersal agents may have facilitated colonization of oceanic islands by the Edwardsia group of Sophora species.

Mosses of sub-Antarctic Heard Island: an updated list and discussion of their distribution

ABSTRACT During an early summer visit in 2000, mosses were collected from sites around Heard Island. Three species, Bryoerythrophyllum recurvirostrum (Hedw.) P.C.Chen, Philonotis cf. tenuis (Taylor)

Vagrant birds as a dispersal vector in transoceanic range expansion of vascular plants

Although one self-incompatible shrub seems doomed to remain solitary, its mere establishment on a Southern Ocean island demonstrates the potential of vagrancy as a driver of extreme long-distance dispersal of terrestrial biota.

Rapid range expansion of an invasive flatworm, Kontikia andersoni, on sub-Antarctic Macquarie Island

The possible underlying mechanisms for the dramatic range expansion of K. andersoni are discussed, the implications for the future management of Macquarie Island are considered and biosecurity practise is considered.

Spatial patterns in the microarthropod community associated with Azorella selago (Apiaceae) on the sub-Antarctic Prince Edward Islands

The spatial distribution of animals and plants at different scales is a central theme in ecology. Knowledge of biodiversity distribution is essential, especially with the current threat of climate

Myzus ascalonicus, an Aphid Recently Introduced to Sub-Antarctic Islands, Prefers Native to Exotic Host-Plants

  • M. Hullé
  • Environmental Science
    Environmental entomology
  • 2012
Performance of an introduced aphid species was experimentally compared on three native and three exotic plant species found on the Kerguelen Islands and the results are discussed in light of the possibility of an absence or ineffective defense mechanisms in native plants.

Colonisation of sub-Antarctic Marion Island by a non-indigenous aphid parasitoid Aphidius matricariae (Hymenoptera, Braconidae)

The eighth establishment of a braconid wasp Aphidius matricariae Haliday is recorded, which uses the aphid Rhopalosiphum padi (Linnaeus) as its only host on the island.

Alien species and propagules in the Antarctic : movements through space and time

Results suggested that the construction of the British Antarctic Survey Halley VI station will facilitate the transport of over 5000 seeds from 34 taxa into the region, making this a significant pathway for introductions.



New records of vascular plants from Heard Island

  • J. Scott
  • Environmental Science
    Polar Record
  • 1989
Abstract Eight species of vascular plants were previously known from subantarctic Heard Island. Three additional species, Montia fontana, Ranunculus biternatus and Poa annua, were discovered during

Changes in Subantarctic Heard Island Vegetation at Sites Occupied by Poa annua, 1987–2000

P. annua considerably expanded its range and abundance along three transects in tundra-like vegetation on Heard Island in the period 1987-2000, strongly associated with increased seal disturbance, which also favored Callitriche antarctica and damaged Pringlea antiscorbutica, leading to a decrease in mean vegetation height.

New records of alien vascular plants from Marion and Prince Edward Islands, sub-Antarctic

A survey was made of the distribution of introduced vascular plants on Marion and Prince Edward Islands, finding many of the naturalised aliens are still increasing markedly in area and/or in numbers.

The vascular flora and vegetation of Ile de Croy, Iies Kerguelen

Abstract In a botanical field survey of Ile de Croy, Iles Kerguelen, from 17 November to 14 December 1984, 14 of the 29 species of vascular plants known from the archipelago were recorded. None of

Corybas macranthus (Hook.f.) Reichb.f (orchidaceae), a new record for Macquarie Island

This is the first record of a member of the Orchidaceae occuring in the Subantartic, and the possible means whereby the orchid extended its range from New Zealand are discussed.

Azorella Lamarck (Apiaceae) on Heard and Macquarie Islands, with description of a new species A. macquariensis

  • A. Orchard
  • Environmental Science
    Muelleria: An Australian Journal of Botany
  • 1989
Orchard, A. E. Azorella Lamarck (Apiaceae) on Heard and Macquarie Islands, with description of a new species, A. macquariensis. Muelleria 7(1): 15-20 (1989). — Azorella macquariensis, a new species

The vegetation of subantarctic Campbell Island

The vegetation of Campbell Island and its offshore islets was sampled quantitatively at 140 sites. Data from the 134 sites with more than one vascular plant species were subjected to multivariate

A revision of the New Zealand, Subantarctic, and South American species of Cotula, Section Leptinella

Twenty-five species from New Zealand, the Subantarctic islands, and South America are described and classified into two series, Elongata and Radiata.

Life at the front: history, ecology and change on southern ocean islands.

  • BergstromChown
  • Environmental Science
    Trends in ecology & evolution
  • 1999