Phytoplankton uptake of 15N and 14C in the Ross Sea during austral spring 1994Springer Science and Business Media LLC - Tập 23 - Trang 495-502 - 2000
M. Lipizer, O. Mangoni, G. Catalano, V. Saggiomo
In spring 1994, within the ROSSMIZE research project, combined measurements of nitrogen (15N) and carbon (14C) uptake were made in the Ross Sea, passing from the McMurdo polynya to the ice-covered area in the north, in order to study the effect of environmental conditions (light availability, ice cover, vertical stability) on the coupling of N and C cycles. Nitrogen (nitrate and ammonium) and car...... hiện toàn bộ
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
Spread of Antarctic vegetation by the kelp gull: comparison of two maritime Antarctic regionsSpringer Science and Business Media LLC - Tập 41 - Trang 1143-1155 - 2018
I. Parnikoza, A. Rozhok, P. Convey, M. Veselski, J. Esefeld, R. Ochyra, O. Mustafa, C. Braun, H.-U. Peter, J. Smykla, V. Kunakh, I. Kozeretska
In the present paper, we compare how the kelp gull, Larus dominicanus, utilizes various nest building materials, particularly vascular plants, bryophytes, lichens and other components, in the Fildes Peninsula area (King George Island) and on the Argentine Islands area. In both areas, nest material primarily consisted of the Antarctic hairgrass (Deschampsia antarctica), bryophytes, lichens, feather...... hiện toàn bộ
Temporal shift in biomass and production of macrozoobenthos in the macroalgal belt at Hansneset, Kongsfjorden, after 15 yearsSpringer Science and Business Media LLC - Tập 39 - Trang 2065-2076 - 2015
Martin Paar, Andrey Voronkov, Haakon Hop, Thomas Brey, Inka Bartsch, Max Schwanitz, Christian Wiencke, Benoit Lebreton, Ragnhild Asmus, Harald Asmus
In Arctic macroalgal belt ecosystems, macrozoobenthic production is thought to be an important link between primary production and higher trophic levels. Macrozoobenthic biomass and secondary production were studied along transects (2.5–15 m depth) in the macroalgal belt at Hansneset in Kongsfjorden, Svalbard, from 2012 to 2013. At 2.5 m, the standing stock reached its maxima of 174.8 ± 54.4 g as...... hiện toàn bộ
Climate influences body condition and synchrony of barren-ground caribou abundance in Northern CanadaSpringer Science and Business Media LLC - Tập 41 Số 5 - Trang 855-864 - 2018
Mallory, Conor D., Campbell, Mitch W., Boyce, Mark S.
Large-scale climate oscillations may contribute to the observed dramatic fluctuations and regional synchrony in Rangifer abundance. Here, we test this hypothesis using long-term abundance and physical condition datasets to investigate the relationships between broad climate patterns, summer-range quality, and population dynamics in three barren-ground caribou herds in northern Canada. We found tha...... hiện toàn bộ