Search Results - (Author, Cooperation:P. Convey)
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1Latest Papers from Table of Contents or Articles in PressS. L. Chown ; J. E. Lee ; K. A. Hughes ; J. Barnes ; P. J. Barrett ; D. M. Bergstrom ; P. Convey ; D. A. Cowan ; K. Crosbie ; G. Dyer ; Y. Frenot ; S. M. Grant ; D. Herr ; M. C. Kennicutt, 2nd ; M. Lamers ; A. Murray ; H. P. Possingham ; K. Reid ; M. J. Riddle ; P. G. Ryan ; L. Sanson ; J. D. Shaw ; M. D. Sparrow ; C. Summerhayes ; A. Terauds ; D. H. Wall
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-07-17Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Antarctic Regions ; Climate Change ; *Conservation of Natural Resources/trends ; *Ecosystem ; Forecasting ; Human Activities ; Humans ; Public Policy ; TravelPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 0003-3472Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 0003-3472Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-2056Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Qualitative samples of Collembola were obtained from a range of substrates near Husvik, Stromness Bay, South Georgia, between January and March 1996. Collections made at Hope Point near Grytviken (Cumberland East Bay) in 1980/1982 and 1997 were also examined. Fifteen species of Collembola were recorded around Husvik; most were widely distributed. Two of these, Friesia sp. nov. and Cryptopygus badasa, represent additions to the previously recognised fauna of 17 species. A new record of an introduced species, Hypogastrura purpurescens, was identified in collections from Hope Point in 1980/1982, bringing the total South Georgian fauna to 20 species. A key to South Georgian Collembola is included. H. purpurescens and the congeneric Hypogastrura viatica, both cosmopolitan invasive species, have also been recognised on other sub-Antarctic islands and have displaced resident species from some habitats. Their presence on South Georgia, and the dominance of H. viatica in some habitats, highlight the importance of strict quarantine measures to avoid the introduction of further alien invertebrates.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1432-2056Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract We report the first detailed study of the terrestrial invertebrate fauna of the Byers Peninsula SSSI, Livingston Island, South Shetland Islands. Fourteen micro-arthropod taxa (10 Acari, four Collembola) and two Diptera are recorded, including the first record of the mite Edwardzetes dentifer from the maritime Antarctic. The first record of the midge Belgica antarctica from neighbouring Snow Island is also given. Population composition and density were described in samples from a wide range of terrestrial and freshwater habitats. There was no strong relationship between habitat and microarthropod species occurrence, although comparison of completely vegetated and more stony sites revealed greater population densities at the vegetated sites, and different species proportions at each. Some individual samples contained a wide range of species with none achieving numerical dominance, whilst others from superficially similar sites were dominated by one species. Dipterans were limited to a small number of lakes, streams and seepage areas, where they were sometimes abundant. Population density data and species occurrence are compared with previously published studies from the maritime Antarctic and elsewhere.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1432-2056Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract As an addendum to a recent publication on the terrestrial arthropod fauna of the Byers Peninsula Site of Special Scientific Interest (SSSI), which included preliminary identification of four Collembola, we now present detailed information on Collembola occurring within the SSSI. Five species were recorded [Friesea grisea (Schaffer), Tullbergia mixta Wahlgren, Isotoma (Folsomotoma) octooculata (Willem), Cyptopygus antarcticus Willem, and Cryptopygus sp. nov.]. Species occurrence and abundance differed between samples collected from poorly vegetated stony ground and vegetation cores. F. grisea was both the commonest (58% of individuals) and the most widely distributed (18/19 samples) springtail in the former habitat. Cryptopygus sp. nov. was recorded only in the vegetation core samples. All five species were more evenly distributed in vegetation samples, although C. antarcticus and Cryptopygus sp. nov. were again the least abundant. A list of the terrestrial arthropods of the SSSI is presented.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1432-2056Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Rates of dark respiration (DR), gross photosynthesis (GPS) and net photosynthesis (NPS) were investigated for 14 species of moss from a maritime Antarctic locality. The rates found were similar to those reported in studies of temperate, alpine and Arctic species, indicating no physiological specialisation to the Antarctic environment. There was no relationship between the habitat occupied by a species (hydric, mesic, xeric) and physiological measures. There was, however, a loose correlation between NPS and a species' ecology or reproductive behaviour in the maritime Antarctic — species with high NPS being either colonists or those that show high and regular investment in sporophyte production.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1432-2056Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Christensenia gen. nov., C. blocki sp. nov., is described from Signy Island, South Orkney Islands, maritime Antarctic. The new species is identical with specimens that Stephenson (1932) determined as Marionina georgiana (Michaelsen, 1888), but differs from the type material of M. georgiana. The species M. georgiana (Michaelsen, 1888) is also placed in the new genus Christensenia, the main characteristics of which are: possession of sigmoid setae, and the presence of large numbers of small, hyaline, stick-like, anucleate lymphocytes. No other types of lymphocyte are observed. Oesophageal appendages and intestinal diverticulae are absent. Dorsal vessel originates in the clitellar region; blood is colourless. The anteseptal part of the nephridium consists of the funnel and a few canals, with the efferent duct arising postero-ventrally. Spermathecae are without diverticulae, entally connecting with the oesophagus. The known distribution of the genus is currently limited to terrestrial habitats in the sub- and maritime Antarctic.Type of Medium: Electronic ResourceURL: