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Biological Distributional Types In The Flora Of Greenland
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Book Synopsis A Phytogeographical Study of the Vascular Plants of Norther Greenland - North of 74 Northern Latitude by : Christian Bay
Download or read book A Phytogeographical Study of the Vascular Plants of Norther Greenland - North of 74 Northern Latitude written by Christian Bay and published by Museum Tusculanum Press. This book was released on 1992 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: .
Book Synopsis Biological Distributional Types in the Flora of Greenland by : Tyge Wittrock Böcher
Download or read book Biological Distributional Types in the Flora of Greenland written by Tyge Wittrock Böcher and published by . This book was released on 1938 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alpine Biodiversity in Europe by : Laszlo Nagy
Download or read book Alpine Biodiversity in Europe written by Laszlo Nagy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United Nations Conference on the Environment and Development (UNCED), held in Rio de Janeiro in 1992, spawned a multitude of pro grammes aimed at assessing, managing and conserving the earth's biological diversity. One important issue addressed at the conference was the mountain environment. A specific feature of high mountains is the so-called alpine zone, i. e. the treeless regions at the uppermost reaches. Though covering only a very small proportion of the land surface, the alpine zone contains a rela tively large number of plants, animals, fungi and microbes which are specifi cally adapted to cold environments. This zone contributes fundamentally to the planet's biodiversity and provides many resources for mountain dwelling as well as lowland people. However, rapid and largely man-made changes are affecting mountain ecosystems, such as soil erosion, losses of habitat and genetic diversity, and climate change, all of which have to be addressed. As stated in the European Community Biodiversity Strategy, "the global scale of biodiversity reduction or losses and the interdependence of different species and ecosystems across national borders demands concerted international action". Managing biodiversity in a rational and sustainable way needs basic knowledge on its qualitative and quantitative aspects at local, regional and global scales. This is particularly true for mountains, which are distributed throughout the world and are indeed hot spots of biodiversity in absolute terms as well as relative to the surrounding lowlands.
Book Synopsis Bibliography on the Climate of Greenland by : Thomas A. Bender
Download or read book Bibliography on the Climate of Greenland written by Thomas A. Bender and published by . This book was released on 1957 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arranged alphabetically within ten year groups.
Book Synopsis Altitude Distribution of Vascular Plants in Mountains of East and Northeast Greenland by : Fritz Hans Schwarzenbach
Download or read book Altitude Distribution of Vascular Plants in Mountains of East and Northeast Greenland written by Fritz Hans Schwarzenbach and published by Museum Tusculanum Press. This book was released on 2000 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: .
Book Synopsis Vegetation and Zonation in Continental West Greenland by : Birgit Sieg
Download or read book Vegetation and Zonation in Continental West Greenland written by Birgit Sieg and published by Museum Tusculanum Press. This book was released on 2006 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology of the Peregrine and Gyrfalcon in Greenland by : William A. Burnham
Download or read book Biology of the Peregrine and Gyrfalcon in Greenland written by William A. Burnham and published by Museum Tusculanum Press. This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Meddelelser Om Grønland by : Bent Fredskild
Download or read book Meddelelser Om Grønland written by Bent Fredskild and published by Museum Tusculanum Press. This book was released on 1996-12 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phytogeographically and climatically West Greenland includes parts of the low arctic and high arctic areas. The present vegetation and a summary of its history since the last glaciation based on pollen and macrofossil analyses are briefly described. The determination of more than 55,000 herbarium sheets of native phanerogams has been checked. Before preparing the dot maps it was necessary to decide at which level taxonomically difficult genera (eg: Antennaria, Draba, Poa, Puccinellia, and Stellaria would be treated). For all of these the criteria used are given. Dot maps have been prepared for 379 taxa. These maps have been grouped into 11 West Greenland distribution types, which clearly correlate with T W Böcher's biological distribution types (Böcher 1963). The collecting intensity in the large area is rather uneven. This is illustrated by a map giving the number of collections at the 305 localities from which 50 or more collections are at hand. Another map giving the number of taxa at 29 well-investigated localities illustrates the species diversity in the region. Most low arctic localities have more than 130 taxa, with 215 at the richest locality (Godhavn / Qeqertarsuaq on Disko), while the number at no high arctic locality exceeds lS0. Reference to the corresponding numbers in other parts of Greenland is given. Based on the dot maps a new delimitation of West Greenland in floristic provinces and districts is presented. It differs somewhat from that in Grønlands Flora / The Flora of Greenland (Böcher et al. 1957, and later editions). The major alteration is that the boundary between the low and high arctic phytogeographic provinces is now placed through north Disko - Nuussuaq. As a consequence of this the southernmost district in the high arctic is divided into an outer (NWso) and an inner province (NWsi). Minor alterations are suggested in the southern part of West Greenland.
Book Synopsis Geographical Guide to Floras of the World by : Sidney Fay Blake
Download or read book Geographical Guide to Floras of the World written by Sidney Fay Blake and published by . This book was released on 1942 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miscellaneous Publication written by and published by . This book was released on 1942 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geographical Guide to the Floras of the World: Africa, Australia, North America, South America and Islands of the Atlantic, Pacific, and Indian Oceans by : Sidney Fay Blake
Download or read book Geographical Guide to the Floras of the World: Africa, Australia, North America, South America and Islands of the Atlantic, Pacific, and Indian Oceans written by Sidney Fay Blake and published by . This book was released on 1942 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pamphlets on Biology written by and published by . This book was released on 1909 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flora of North America, North of Mexico by : Flora of North America Editorial Committee
Download or read book Flora of North America, North of Mexico written by Flora of North America Editorial Committee and published by . This book was released on 1993 with total page 941 pages. Available in PDF, EPUB and Kindle. Book excerpt: FNA presents for the first time, in one published reference source, information on the names, taxonomic relationships, continent-wide distributions, and morphological characteristics of all plants native and naturalized found in North America north of Mexico.
Download or read book Arctic and Alpine Research written by and published by . This book was released on 1985 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meddelelser Om Grønland written by and published by . This book was released on 1978 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology Pamphlets written by and published by . This book was released on 1922 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Biology of Seaweeds by : Christopher S. Lobban
Download or read book The Biology of Seaweeds written by Christopher S. Lobban and published by Univ of California Press. This book was released on 1981-01-01 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
