An interdisciplinary approach to vegetation mapping on lichen-dominated systems in high-arctic environment, Ny Ålesund (Svalbard)

Brossard, Thierry; Deruelle, S.; Nimis, Pierluigi; Petit, P.

doi:10.1127/phyto/12/1984/433

Cited by 25 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only presence/absence was considered, because species abundance estimates are somewhat subjective, and are unlikely to be stable over a 31‐year interval. Hence, the survey data took into account the complete species list established for this sector by Brossard et al. (1984).…”

Section: Methodsmentioning

confidence: 99%

Recent spatial development of Svalbard strandflat vegetation over a period of 31 years

2009

View full text Add to dashboard Cite

Vegetation succession was analysed at the forefields of two glaciers in Svalbard over an interval of 31 years (1975–2006). In 1975, 85 sampling sites were positioned along transects extending from the coastline to the glacier fronts: botanical observations were made at each sampling site. This protocol allowed us to carry out new observations in 2006 under the same conditions. Thus, it was possible to undertake a botanical assessment of species and taxa, and to see how the vegetation has changed with reference to a typology established by coupling correspondence analysis and ascending hierarchical classification. Vegetation succession at the sampling sites was also measured by using vectors positioned in the multidimensional space of correspondence analysis. In this way, the changes over the interval between seven vegetation types were plotted and mapped, and the colonization process was calibrated and dated against a series of reference stages, mainly since the end of the Little Ice Age.

show abstract

Section: Methodsmentioning

confidence: 99%

Recent spatial development of Svalbard strandflat vegetation over a period of 31 years

2009

View full text Add to dashboard Cite

show abstract

“…For the formation of these mosaic communities, see Sigafoos (1952), Kryuchkov (1976), Chernov (1980) and Walker et al (1980). Brossard et aL (1984) and Nimis (1985) advocate for the use of very small relev6s (10 × 10cm) and for the recognition of (synusial) microcommunities in Spitsbergen. Such an approach is necessary when the microcommunity complexes have an irregular dispersion, like on thin soil over uneven rock outcrops, rock fields or in peatlands.…”

Section: Syntaxonomic Approaches In the Classification Of Epigeic Licmentioning

confidence: 99%

Epigeic lichen communities of taiga and tundra regions

1990

View full text Add to dashboard Cite

The major physiognomic and ecological categories of the lichen-rich, epigeic communities in the boreal (taiga) and arctic (tundra) zones are defined and their syntaxonomy and ecology in Europe, Asia and North America is reviewed. In the boreal and hemiarctic areas open, dry, acidophytic lichen woodlands are widespread, especially on sandy habitats. Their epigeic lichen synusiae are usually dominated by four fruticose Cladina species, being extremely homogeneous in species composition and structure throughout the boreal zone, while the dominant trees and the other vascular plant flora of the woodlands are geographically more variable. No phytosociological classification system exists that would cover most of these communities over the circumpolar regions. Very similar communities, though much more poorly known, are found on thin soils over Precambrian rock outcrops. Other sites to produce epigeic lichen communities include open sand dunes, treeless heathlands, drier bogs and many seral stages, like those on road banks. Boreal lichen-rich communities on eutrophic soils may be developed in semiarid regions, in particular. In the Arctic, lichens are common in most communities, and the driest ones are regularly lichen-dominated, whether acidophytic or eutrophytic, chionophytic or achionophytic. Detailed syntaxonomic systems for their classification have been developed, especially in Greenland and Scandinavian mountains (in oroarctic zones in the latter regions). The richest fruticose lichen areas are in continental, hemiarctic timberline regions in northern Siberia and Canada. The southern and middle arctic subzones are also characterized by many macrolichens, such as Cetraria cucullata, C. nivalis, Alectoria ochroleuca, and Thamnolia vermicularis, but everywhere also small, crustose lichens are common on soil, such as Rinodina turfacea and Lopadium pezizoideum, which are often overlooked in vegetation analyses. The presence of microlichens and the formation of mosaic micropatterns of soil lichen communities is particularly typical of the northern arctic subzone. The conservation problems of the boreal and arctic lichen communities include overgrazing by reindeer or caribou, which has caused delichenization in some regions, extensive forest and tundra fires, use of heavy transport vehicles in forestry and tundra operations, and, locally, heavy industrial air pollution. 40

show abstract

“…A few projects in the arctic have described the ecology of contemporary moss assemblages (Brassard 197 la;Holmen 1953Holmen , 1960Kuc 1969Kuc , 1973Mirtensson 1956;Schuster et al 1959;Steere 1947Steere , 1978. Other studies have used quantitative ecological methods that included data on bryophytes (Bell and Bliss 1980;Brossard et al 1984;Gould 1985;Miller and Alpert 1984;Nimis 1985;Sheard and Geale 1983a, 19836;Sohlberg and Bliss 1984;Vitt and Pakarinen 1977). However, most research has emphasized vascular plants and has not included bryophyte species.…”

Section: Introductionmentioning

confidence: 99%

The contemporary moss assemblages of a high arctic upland, northern Ellesmere Island, N.W.T., Canada

Farge¹

1989

Can. J. Bot.

View full text Add to dashboard Cite

A quantitative analysis of contemporary moss assemblages is presented for a fault block at the southern end of Piper Pass, northern Ellesmere Island, N.W.T. (82°12′N, 68°31′W). Twenty-eight stands are analyzed using the two-way indicator species analysis, resulting in seven major species groups and five major stand groups. Physical parameters correlated with the stand data show soil moisture and slope to be the most important factors influencing the distribution of moss assemblages. Sodium, organic content, and specific conductivity are also correlated with the vegetation data. Detrended correspondence analysis confirms these stand relationships. The interdependence of physical, chemical, and vegetation data is also discussed. Distribution patterns of the species groups within the stand groups are analyzed by means of a percent frequency diagram. A direct gradient analysis of the vegetation below a late-lying snowbank also demonstrates the selective distribution of species in terms of environmental gradients.

show abstract

An interdisciplinary approach to vegetation mapping on lichen-dominated systems in high-arctic environment, Ny Ålesund (Svalbard)

Cited by 25 publications

References 0 publications

Recent spatial development of Svalbard strandflat vegetation over a period of 31 years

Recent spatial development of Svalbard strandflat vegetation over a period of 31 years

Epigeic lichen communities of taiga and tundra regions

The contemporary moss assemblages of a high arctic upland, northern Ellesmere Island, N.W.T., Canada

Contact Info

Product

Resources

About