On the uptake of ornithogenic products by plants on the inland mountains of Dronning Maud Land, Antarctica, using stable isotopesSpringer Science and Business Media LLC - Tập 20 - Trang 107-111 - 1998
M. P. Cocks, D. A. Balfour, W. D. Stock
Breeding snow petrels (Pagodroma nivea) may be a major source of nutrients for the ecosystems on the inland nunataks (mountain outcrops) of continental Antarctica. To test this theory, the δ15N and δ13C values of soil and plants (moss, lichen and algae) from 11 nunataks with and without breeding snow petrels in northwestern Dronning Maud Land were compared. High δ15N values in all samples from nu...... hiện toàn bộ
Microscopic anatomy and ultrastructure of the digestive system of three Antarctic shrimps (Crustacea: Decapoda: Caridea)Springer Science and Business Media LLC - Tập 24 - Trang 604-614 - 2001
Volker Storch, Bodil A. Bluhm, Wolf E. Arntz
Mandibles and stomachs of three Antarctic shrimp species (Nematocarcinus lanceopes, Notocrangon antarcticus, and Chorismus antarcticus) were investigated by means of scanning electron microscopy. Transmission electron microscopy of the midgut glands was applied to find out the nutritional status of the animals, which contained a broad variety of food items in their stomachs. In contrast to the An...... hiện toàn bộ
Energetic costs of raising Pygoscelid penguin chicksSpringer Science and Business Media LLC - Tập 14 - Trang 205-210 - 1994
Boris Culik
Energy requirements of resting Adélie (Pygoscelis adeliae), Gentoo (P. papua) and Chinstrap (P. antarcticd) penguin chicks were determined with respect to body mass via respirometry in Antarctica. Resting metabolic rates of all Pygoscelid penguin chicks were similar (ANOVA p=0.91) and best described by E=0.0096 M0.98 (n=24, r2=0.97), where E is power (W) and M is mass (g). Using the results obtain...... hiện toàn bộ
Biology of Euplotes focardii, an Antarctic ciliateSpringer Science and Business Media LLC - Tập 13 - Trang 489-493 - 1993
A. Valbonesi, P. Luporini
Euplotes focardii, a ciliate species recently collected from sand sediments of Terra Nova Bay (Ross Sea, Antarctica) reproduced in the laboratory with a duplication time of approximately 72 h, at 4°C. Strains representative of two different mating types were identified and mixed together to produce mating pairs. These showed traits rather unusual for Euplotes species. The two pair members remaine...... hiện toàn bộ