Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511513
Category :
Languages : en
Pages : 40
Book Description
Lichens from Central East Greenland
Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511513
Category :
Languages : en
Pages : 40
Book Description
Notes on Occurrence and Distribution of Lichens in South East Greenland
Author: Eric Steen HansenPublisher:
ISBN: 9788717252301
Category :
Languages : en
Pages : 0
Book Description
Notes on Occurrence and Distribution of Lichens in South East Greenland
Author: Denmark. Kommissionen for videnskabelige undersøgelser i GrønlandPublisher:
ISBN:
Category :
Languages : en
Pages : 75
Book Description
The Lichen Genus Physcia and Allied Genera in Greenland
Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511827
Category :
Languages : en
Pages : 36
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.
American Arctic Lichens: The microlichens
Author: John Walter ThomsonPublisher: Univ of Wisconsin Press
ISBN: 9780299134600
Category : Nature
Languages : en
Pages : 696
Book Description
Lists a total of 965 species in 168 genera in the two volumes, describing the species including distribution maps covering Alaska, Canada, Greenland and Iceland. Includes an overview of the geology, climate, geography and ecology of the American arctic.
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
The Allotetraploid Saxifraga Nathorsti and its Probable Progenitors S. Aizoides and S. Oppositifolia
Author: Publisher: Museum Tusculanum Press
ISBN: 9788763511544
Category :
Languages : en
Pages : 28
Book Description
Illustrated Moss Flora of Arctic North America and Greenland
Author: Gert S. MogensenPublisher: Museum Tusculanum Press
ISBN: 9788763511780
Category : Mosses
Languages : en
Pages : 68
Book Description
Meroplankton in Jorgen Bronlund Fjord, North Greenland
Author: Ole G.. Norden AndersenPublisher: Museum Tusculanum Press
ISBN: 9788763511599
Category : Jørgen Brønlund Fjord, North Greenland
Languages : en
Pages : 32
Book Description