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Statistical models of invertebrate distribution on Macquarie Island: a tool to assess climate change and local human impacts
Springer Science and Business Media LLC - - 1999
Kendi F. Davies, Brett A. Melbourne
Copepod assemblages in the water column and drifting sea-ice floes in the ice-edge region in the Indian Ocean sector of the Southern Ocean during the austral summer
Springer Science and Business Media LLC - Tập 45 - Trang 749-762 - 2022
Ryosuke Makabe, Takumi Hasegawa, Masayoshi Sano, Haruhiko Kashiwase, Masato Moteki
The ice-associated copepods Stephos longipes, Paralabidocera antarctica, and Drescheriella glacialis are the dominant species inhabiting Antarctic sea ice. They influence the pelagic ecosystem after being released into the water column when the ice melts from spring to summer in the marginal ice zone (MIZ), although less is known about those in the off-shelf region. We investigated the occurrence...... hiện toàn bộ
On the uptake of ornithogenic products by plants on the inland mountains of Dronning Maud Land, Antarctica, using stable isotopes
Springer 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
Variability in primary productivity and bio-optical properties in the Indian sector of the Southern Ocean during an austral summer
Springer Science and Business Media LLC - Tập 43 Số 10 - Trang 1469-1492 - 2020
Anvita U. Kerkar, S.C. Tripathy, P. Minu, Nikhil Kumar Baranval, P. Sabu, Sivaji Patra, Rajani Kanta Mishra, Amit Sarkar
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
Diet, nesting density, and breeding success of rough-legged buzzards (Buteo lagopus) on the Nenetsky Ridge, Arctic Russia
Springer Science and Business Media LLC - - 2014
Ivan Pokrovsky, Dorothée Ehrich, Rolf A. Ims, Olga Kulikova, Nicolas Lecomte, Nigel G. Yoccoz
A laboratory study on digestive processes in the Antarctic krill, Euphausia superba, with special regard to chitinolytic enzymes
Springer Science and Business Media LLC - - 1999
Reinhard Saborowski, Friedrich Buchholz
Feeding experiments of 9, 14 and 20 days duration were carried out on the Antarctic krill, Euphausia superba. Two groups were fed with the chitinous diatom Cyclotella cryptica and the non-chitinous green algae Dunaliella bioculata, respectively. A control group remained unfed. The time courses of the activities of endo- and exochitinase in the stomach and the midgut gland were compared with those...... hiện toàn bộ
Energetic costs of raising Pygoscelid penguin chicks
Springer 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 ciliate
Springer 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
Trophic variability of long tail hake Macruronus magellanicus in the Southwestern Atlantic: movements evidenced by stomach content and stable isotope analysis
Springer Science and Business Media LLC - Tập 45 - Trang 1131-1143 - 2022
C. D. Alvarez, A. R. Giussi, F. Botto
Studying the trophic ecology of marine fishes in their natural habitat provides insights into their behavior, their role in community dynamics, and in energy flow through ecosystems. The long tail hake Macruronus magellanicus Lönnberg, 1907, is distributed from 35°S in the Atlantic Ocean and 33°S in the Pacific Ocean and supports important fisheries around the southern tip of South America. The tr...... hiện toàn bộ
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