Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511476
Category :
Languages : en
Pages : 88
Book Description
Vegetation of the Angmagssalik District, Southeast Greenland, IV. Shrub, Dward Shrub and Terricolous Lichens
Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511476
Category :
Languages : en
Pages : 88
Book Description
Biology of the Peregrine and Gyrfalcon in Greenland
Author: William A. BurnhamPublisher: Museum Tusculanum Press
ISBN: 9788763511629
Category : Science
Languages : en
Pages : 32
Book Description
A ten year study began in 1972 in West Greenland to investigate the breeding biology of the peregrine falcon. Data on nesting gyrfalcons were also collected. Thirty-four peregrine nesting sites were examined in the 6050 km2 inland study area near Søndre Strømfjord. Limited research also centered in Disko Bugt and Frederikshåb. Peregrines were found nesting predominantly on high, south-facing cliffs, which overlooked large areas. The mean minimum distance between peregrine eyries was 7.7 km for the inland area (1972 and 1973) and 55 km for the coast (1974). Approximately 60 percent of the inland nesting sites were occupied each year. A ten-year average production of 1.90 young per occupied site and 2.78 young per successful site was determined. Lapland longspurs, snow buntings, wheatears, and redpolls comprised 90 percent of the peregrines diet. Raven nests and prey availability may be the most significant factor affecting falcon density. Addled peregrine eggs, eggshell fragments, and peregrine prey species were collected. Whole eggs averaged 14.3 ppm wet weight (305 ppm lipid weight ) DDE, while eggshell measurements showed a 16 percent thinning compared with pre-1940 eggs from Greenland. Prey species carried low levels of DDE. The peregrine population appears to be at a near critical contamination level, and a small increase in DDE level could contribute to a population decline. No indication of a decline has been observed during the study, and the population appears stable. The project banded 185 peregrines, from which 8 recoveries occurred. The recoveries suggest peregrines migrate south to winter in South America.
Meddelelser Om Grønland, Bioscience
Author: Bilogical Monitoring of Airborne Deposition Within and Around the Ilimaussaq Intrusion, Southwest Greenland
Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511872
Category :
Languages : en
Pages : 32
Book Description
The Atlantic Walrus (Odobenus Rosmarus Rosmarus) in West Greenland
Author: The Allotetraploid Saxifraga Nathorsti and Its Probable Progenitors S. Aizoides and S. Oppositifolia
Author: Tyge Wittrock BöcherPublisher:
ISBN:
Category : Plant ecological genetics
Languages : en
Pages : 36
Book Description
North American Terrestrial Vegetation
Author: Michael G. BarbourPublisher: Cambridge University Press
ISBN: 9780521559867
Category : Nature
Languages : en
Pages : 622
Book Description
This second edition provides extensively expanded coverage of North American vegetation from arctic tundra to tropical forests.
Encyclopedia of the Arctic
Author: Mark NuttallPublisher: Routledge
ISBN: 1136786805
Category : Reference
Languages : en
Pages : 2306
Book Description
With detailed essays on the Arctic's environment, wildlife, climate, history, exploration, resources, economics, politics, indigenous cultures and languages, conservation initiatives and more, this Encyclopedia is the only major work and comprehensive reference on this vast, complex, changing, and increasingly important part of the globe. Including 305 maps. This Encyclopedia is not only an interdisciplinary work of reference for all those involved in teaching or researching Arctic issues, but a fascinating and comprehensive resource for residents of the Arctic, and all those concerned with global environmental issues, sustainability, science, and human interactions with the environment.
The Vegetation Types of Northeast Greenland
Author: Bent FredskildPublisher: Museum Tusculanum Press
ISBN: 9788763512473
Category : Science
Languages : en
Pages : 88
Book Description
.
Author: Hedwig Roderfeld