You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Birch Woodlands and Tree Growth in Southern Greenland
Tyge W. Böcher
Vol. 2, No. 4, Fennoscandian Tree-Line Conference at Kevo-Abisko, 6-14 September 1977 (1979), pp. 218-221
Stable URL: http://www.jstor.org/stable/3682415
Page Count: 4
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Inland areas in SW Greenland south of lat. 67°N have thermic conditions which are subarctic or just border on subarctic situations, but natural woodlands of Betula pubescens coll. and Sorbus groenlandica, though not covering vast areas, are confined to favourable places from lat. 60°15′ to 61°15′N. Alnus crispa forms thickets in middle fjord - or inland areas between 61° and 67°. Apart from those depending on human activities, the factors limiting hardwood tree growth in Greenland are climatic and due either to hyperoceanic conditions in coastal mountains or skerries (too low summer temperatures) or high degree of continentality, resulting in extremely low precipitation (e.g. Søndre Strømfjord inland with subarctic steppes and salt lakes). Boreal (including sylvicolous) species, e.g. Cornus suecica, reach far north of the areas inhabited by low birch woodlands, but boreal species dominate the flora of the treeless skerries in South Greenland as well as areas at the head of the fjords where birch trees locally reach heights of 6-7 m.
Holarctic Ecology © 1979 Nordic Society Oikos