Zobrazeno 1 - 10
of 35
pro vyhledávání: '"U. Matthes-Sears"'
Publikováno v:
Journal of Vegetation Science. 10:587-598
In order to understand how communities of rock-inhabiting micro-organisms are spatially organized, rock samples and environmental variables were collected from five cliff sites in Ontario, Canada. Algae and cyanobacteria were extracted from the epili
Autor:
D. W. Larson, U. Matthes‐Sears
Publikováno v:
International Journal of Plant Sciences. 160:122-128
Thuja occidentalis is the dominant tree of ancient, stunted cliff‐face forests of the Niagara Escarpment, Ontario, Canada, and in Michigan and Wisconsin, U.S.A. Previous field research has shown that nutrient and water limitations at the sapling st
Publikováno v:
International Journal of Plant Sciences. 155:569-582
Thuja occidentalis shows slow growth, strip-bark morphology, and extreme longevity when growing on cliffs of the Niagara Escarpment, Ontario, Canada. To test whether these features could result from sectored radial architecture, dye-infusion experime
Publikováno v:
International Journal of Plant Sciences. 154:496-505
Cliffs of the Niagara Escarpment, southern Ontario, Canada support a presettlement forest of stunted, long-lived, and grossly deformed Thuja occidentalis showing pronounced strip-bark growth. Previous studies had suggested that longevity and axis asy
Publikováno v:
Oecologia. 95:9-13
This study was carried out to determine if the desiccation-tolerant fernPolypodium virgimanum L. ecologically resembles lower plants by absorbing atmospheric water through its fronds and actively growing in early spring when the soil along cliff edge
Autor:
U. Matthes-Sears, D. W. Larson
Publikováno v:
Canadian Journal of Botany. 68:2371-2380
Thuja occidentalis L. and Acer saccharum Marsh, show mutually exclusive distribution patterns along forested cliff edges of the Niagara Escarpment; T. occidentalis occurs at the cliff edge and on the cliff face, whereas A. saccharum occurs with incre
Publikováno v:
Canadian Journal of Forest Research. 20:1746-1752
The effects of both seed source and fungal species on the formation of beads in roots of Piceamariana (Mill.) B.S.P. were examined. Seed was collected from two sites near Chapleau, Ontario. One provenance was an upland site with sandy soil, the secon
Publikováno v:
Canadian Journal of Botany. 68:1931-1941
In cliff-edge forests along the Niagara Escarpment, an array of species, including Thuja occidentals, is restricted to the cliff edge while different species, including Acer saccharum, are increasingly dominant away from the cliff on the plateau. Thi
Publikováno v:
Canadian Journal of Botany. 67:2731-2742
A sparse coniferous forest occurs on exposed cliff faces of the Niagara Escarpment in Southern Ontario. This paper presents the first quantitative study of the organization of the vegetation in these areas. The large-scale features of the Niagara Esc