Betula Pendula Roth (B. Verrucosa Ehrh.) and B. Pubescens Ehrh. Atkinson, M. D. Journal of Ecology, 80(4):837–870, 1992. abstract bibtex Betula is a genus of some 50 species distributed throughout the northern temperate region. Fontaine (1970) recognized 52 species, 24 varieties and 8 natural interspecific hybrids. The taxonomy of the European members of the genus has long been in dispute but there are generally acknowledged to be two species of tree birch in Britain (Tuley 1973); B. pendula (2n = 28) and the B. pubescens complex (2n = 56). Linnaeus (1753) treated the tree birches as a single species, B. alba. The dwarf birch (B. nana) occurs in Britain at the edge of its range. There have been reports of trees with intermediate chromosome numbers (Brown & Al-Dawoody 1977, 1979; Nokes 1979). The existence of hybrids between B. pubescens and B. pendula has been postulated by several workers (Gardiner & Pearce 1978; Nokes 1979; Brown, Kennedy & Williams 1982; Kennedy & Brown 1983). [\n] At the north-western edge of their range, the European birches form stable climax forests, but towards the centre of their range they are colonists in primary and human-induced secondary successions (Moore 1979). In Britain, the birches are pioneers in two broad types of habitat: [::1] forest or heathland recently cleared by felling or fire, in gaps left by canopy trees or as primary colonizers of gravel and scree; [::2] habitats climatically unsuitable for other tree species, as for example the upland zones of northern England and Scotland, or edaphically unsuitable habitats such as acidic peat bogs and fens.
@article{atkinsonBetulaPendulaRoth1992,
title = {Betula Pendula {{Roth}} ({{B}}. Verrucosa {{Ehrh}}.) and {{B}}. Pubescens {{Ehrh}}.},
author = {Atkinson, M. D.},
year = {1992},
volume = {80},
pages = {837--870},
abstract = {Betula is a genus of some 50 species distributed throughout the northern temperate region. Fontaine (1970) recognized 52 species, 24 varieties and 8 natural interspecific hybrids. The taxonomy of the European members of the genus has long been in dispute but there are generally acknowledged to be two species of tree birch in Britain (Tuley 1973); B. pendula (2n = 28) and the B. pubescens complex (2n = 56). Linnaeus (1753) treated the tree birches as a single species, B. alba. The dwarf birch (B. nana) occurs in Britain at the edge of its range. There have been reports of trees with intermediate chromosome numbers (Brown \& Al-Dawoody 1977, 1979; Nokes 1979). The existence of hybrids between B. pubescens and B. pendula has been postulated by several workers (Gardiner \& Pearce 1978; Nokes 1979; Brown, Kennedy \& Williams 1982; Kennedy \& Brown 1983).
[\textbackslash n] At the north-western edge of their range, the European birches form stable climax forests, but towards the centre of their range they are colonists in primary and human-induced secondary successions (Moore 1979). In Britain, the birches are pioneers in two broad types of habitat: [::1] forest or heathland recently cleared by felling or fire, in gaps left by canopy trees or as primary colonizers of gravel and scree; [::2] habitats climatically unsuitable for other tree species, as for example the upland zones of northern England and Scotland, or edaphically unsuitable habitats such as acidic peat bogs and fens.},
journal = {Journal of Ecology},
keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13514332,betula-pendula,betula-pubescens,ecology,monography},
lccn = {INRMM-MiD:c-13514332},
number = {4}
}
Downloads: 0
{"_id":"nDqJJ2fRDyhvH77yf","bibbaseid":"atkinson-betulapendularothbverrucosaehrhandbpubescensehrh-1992","downloads":0,"creationDate":"2016-06-22T10:19:48.828Z","title":"Betula Pendula Roth (B. Verrucosa Ehrh.) and B. Pubescens Ehrh.","author_short":["Atkinson, M. D."],"year":1992,"bibtype":"article","biburl":"https://sharefast.me/php/download.php?id=zOUKvA&token=29","bibdata":{"bibtype":"article","type":"article","title":"Betula Pendula Roth (B. Verrucosa Ehrh.) and B. Pubescens Ehrh.","author":[{"propositions":[],"lastnames":["Atkinson"],"firstnames":["M.","D."],"suffixes":[]}],"year":"1992","volume":"80","pages":"837–870","abstract":"Betula is a genus of some 50 species distributed throughout the northern temperate region. Fontaine (1970) recognized 52 species, 24 varieties and 8 natural interspecific hybrids. The taxonomy of the European members of the genus has long been in dispute but there are generally acknowledged to be two species of tree birch in Britain (Tuley 1973); B. pendula (2n = 28) and the B. pubescens complex (2n = 56). Linnaeus (1753) treated the tree birches as a single species, B. alba. The dwarf birch (B. nana) occurs in Britain at the edge of its range. There have been reports of trees with intermediate chromosome numbers (Brown & Al-Dawoody 1977, 1979; Nokes 1979). The existence of hybrids between B. pubescens and B. pendula has been postulated by several workers (Gardiner & Pearce 1978; Nokes 1979; Brown, Kennedy & Williams 1982; Kennedy & Brown 1983). [\\n] At the north-western edge of their range, the European birches form stable climax forests, but towards the centre of their range they are colonists in primary and human-induced secondary successions (Moore 1979). In Britain, the birches are pioneers in two broad types of habitat: [::1] forest or heathland recently cleared by felling or fire, in gaps left by canopy trees or as primary colonizers of gravel and scree; [::2] habitats climatically unsuitable for other tree species, as for example the upland zones of northern England and Scotland, or edaphically unsuitable habitats such as acidic peat bogs and fens.","journal":"Journal of Ecology","keywords":"*imported-from-citeulike-INRMM,~INRMM-MiD:c-13514332,betula-pendula,betula-pubescens,ecology,monography","lccn":"INRMM-MiD:c-13514332","number":"4","bibtex":"@article{atkinsonBetulaPendulaRoth1992,\n title = {Betula Pendula {{Roth}} ({{B}}. Verrucosa {{Ehrh}}.) and {{B}}. Pubescens {{Ehrh}}.},\n author = {Atkinson, M. D.},\n year = {1992},\n volume = {80},\n pages = {837--870},\n abstract = {Betula is a genus of some 50 species distributed throughout the northern temperate region. Fontaine (1970) recognized 52 species, 24 varieties and 8 natural interspecific hybrids. The taxonomy of the European members of the genus has long been in dispute but there are generally acknowledged to be two species of tree birch in Britain (Tuley 1973); B. pendula (2n = 28) and the B. pubescens complex (2n = 56). Linnaeus (1753) treated the tree birches as a single species, B. alba. The dwarf birch (B. nana) occurs in Britain at the edge of its range. There have been reports of trees with intermediate chromosome numbers (Brown \\& Al-Dawoody 1977, 1979; Nokes 1979). The existence of hybrids between B. pubescens and B. pendula has been postulated by several workers (Gardiner \\& Pearce 1978; Nokes 1979; Brown, Kennedy \\& Williams 1982; Kennedy \\& Brown 1983).\n\n[\\textbackslash n] At the north-western edge of their range, the European birches form stable climax forests, but towards the centre of their range they are colonists in primary and human-induced secondary successions (Moore 1979). In Britain, the birches are pioneers in two broad types of habitat: [::1] forest or heathland recently cleared by felling or fire, in gaps left by canopy trees or as primary colonizers of gravel and scree; [::2] habitats climatically unsuitable for other tree species, as for example the upland zones of northern England and Scotland, or edaphically unsuitable habitats such as acidic peat bogs and fens.},\n journal = {Journal of Ecology},\n keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13514332,betula-pendula,betula-pubescens,ecology,monography},\n lccn = {INRMM-MiD:c-13514332},\n number = {4}\n}\n\n","author_short":["Atkinson, M. D."],"key":"atkinsonBetulaPendulaRoth1992","id":"atkinsonBetulaPendulaRoth1992","bibbaseid":"atkinson-betulapendularothbverrucosaehrhandbpubescensehrh-1992","role":"author","urls":{},"keyword":["*imported-from-citeulike-INRMM","~INRMM-MiD:c-13514332","betula-pendula","betula-pubescens","ecology","monography"],"downloads":0},"search_terms":["betula","pendula","roth","verrucosa","ehrh","pubescens","ehrh","atkinson"],"keywords":["betula-pendula","betula-pubescens","ecology","monography","*imported-from-citeulike-inrmm","~inrmm-mid:c-13514332"],"authorIDs":[],"dataSources":["5S2zj2hKW8TWTkuMq"]}