Vegetatio
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Phenological spread in plants: A result of adaptations to environmental stochasticity?
Vegetatio - Tập 43 - Trang 83-86 - 1980
Plant species co-inhabiting a given geographical region often have distinetly different times of flowering. It is shown that such phenological spread, duc to short-term stochastic variation in weather variables, relaxes competition for empty sites to be colonized by diaspores. For sufficiently large spreads stable coexistence becomes possible. The applicability of the proposed hypothesis to the ob......
Possibilities for dispersal in annual and perennial grasses in a savanna in Botswana
Vegetatio - Tập 102 - Trang 1-11 - 1992
Dispersal of 11 dominant grass species in the savanna of southern Botswana was investigated. The dispersal is autochorous, anemochorous and epizoochorous independent of the life-cycle (annuals, perennials). Dispersal distances were estimated experimentally. Anemochorous species with a plume-like spikelet such as Chloris virgata and Enneapogon cenchroides have a low rate of descent (<1 m s-1) and a......
Zur Soziologie der Cymbalaria-Parietarietea, am Beispiel der Mauerteppich-Gesellschaften Italiens
Vegetatio - Tập 17 - Trang 208-213 - 1969
Es wird, mit Gründen belegt, vorgeschlagen, die im mediterranen und atlantischen Europa weit verbreiteten, Stickstoff- und Feuchtigkeitsliebenden Mauerunkraut-(Mauerteppich-) Gesellschaften in einer eigenen Klasse der Cymbalario-Parietarietea zusammenzufassen. An Hand pflanzensoziologischer Aufnahmen aus Italien wird gezeigt, daß innerhalb dieser Pflanzengesellschafts-Gruppe neben dem Oxali-Pariet......
Chemical relations and litter production of Picea mariana and Larix laricina stands on an alkaline peatland in Northern Minnesota
Vegetatio - Tập 40 - Trang 79-94 - 1979
Ecological gradients of boreal forests in South Finland: an ordination test of Cajander's forest site type theory
Vegetatio - Tập 68 - Trang 145-156 - 1987
Ecological gradients in the field layer of southern boreal forests in South Finland were studied in relation to the dominant tree species and the age of forest stands. The data are from a systematic sample of 529 plots from an area of 150 × 200 km, collected in the Third National Forest Inventory in 1951–53. Detrended correspondence analysis (DCA) was applied to log-transformed species cover value......
Ecological significance and classification of Chinese wetlands
Vegetatio - Tập 118 - Trang 49-56 - 1995
China supports a great variety of wetlands, including some of the most important in the world. However, an appropriate classification system applicable to all wetlands is not available. Based on a preliminary inventory, a new classification system for Chinese wetlands is proposed. This system classifies natural wetlands into three categories on the basis of their natural features and distribution:......
Pattern and process in a New Zealand subalpine plant community
Vegetatio - Tập 8 - Trang 209-214 - 1959
Two dynamic patterns found in subalpine herbaceous communities of the North Island of New Zealand are described. These show remarkable similarities with patterns in comparable areas of the northern hemisphere described by Watt (1957) and Burges (1951) as “eroded Rhacomitrietum”. While the genera, except for Rhacomitrium are distinctive, the families represented by other basic zone formers in this ......
Tree regeneration patterns on Mount Usu, northern Japan, since the 1977–78 eruptions
Vegetatio - Tập 126 - Trang 191-198 - 1996
Although the summit of Mount Usu was deforested by the 1977–78 eruptions, vegetative regeneration on the caldera rim was rapid due to the erosion of thick volcanic deposits by snow and rain. To obtain the mechanisms underlying regeneration patterns after the eruptions, we monitored the growth of permanently-marked stems from 1983 to 1990. Regeneration was from resprouting-branches buried in the vo......
La geobotanique au Portugal pendant les dernières années (1938–1946)
Vegetatio - Tập 1 - Trang 184-191 - 1949
Floristic diversity and co-occurrences in a subtropical broad-leaved forest and two contrasting regrowth stands in central-west Yunnan Province, China
Vegetatio - Tập 119 - Trang 1-13 - 1995
Many of the natural forested ecosystems that still remain in mainland China are being cleared with potentially detrimental effects on woody plant species diversity on both local and regional scales. The most extensive stand of subtropical broad-leaved forest remaining in China is located in Yunnan Province. In an effort to document the influence of human-induced disturbance on Yunnan's woody flora......
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