scholarly journals Depth Distribution of Net Methanotrophic Activity at a Mountain Birch Forest—Tundra Heath Ecotone, Northern Sweden

2007 ◽  
Vol 39 (3) ◽  
pp. 477-480 ◽  
Author(s):  
Sofie Sjögersten ◽  
Erik Melander ◽  
Philip A. Wookey
Keyword(s):  
Depth Distribution ◽  
Birch Forest ◽  
Mountain Birch ◽  
Northern Sweden ◽  
Forest Tundra ◽  
Mountain Birch Forest

Large-scale map of key area in forest-tundra zone on Kola Peninsula: methods of mapping and analysis of result

2013 ◽  
pp. 112-124 ◽  
Author(s):  
A. R. Loshkareva ◽  
N. E. Koroleva
Keyword(s):  
Kola Peninsula ◽  
Spatial Resolution ◽  
Large Scale ◽  
Satellite Images ◽  
Birch Forest ◽  
Mountain Birch ◽  
Tundra Zone ◽  
Forest Tundra ◽  
Tundra Vegetation ◽  
Mountain Birch Forest

Large-scale vegetation mapping of key area of 1400 km2 in forest-tundra zone in the middle flow of Teriberkariver (Kola Peninsula) was conducted on the base of satellite images, topographic maps and field geobotanical investigations. Study of Landsat TM images local spectral characteristics and syntaxonomical analysis of vegetation demonstrated that satellite images with 30 m spatial resolution and 6-bands spectral resolution alone can't be used for automatical large-scale classification of forest-tundra zone vegetation. Map of vegetation in scale 1:50 000 resulted from manual processing of both hypsometry and spectral characteristic, on the base of field work points with description of vegetation. Legend of mapped units contains 2 types for tundra, 5 ones for mountain birch forest and 4 ones for wetlands. Quality and correctness of the map were verified by satellite image of extra high spatial resolution Quick Bird (0,65 m/pixel) and aerial photograph for this territory. The map illustrated that distribution of vegetation is primarily caused by unevenness of relief. Timberline lies at 220-240 m a.s.l., altitudinal distances across mountain birch forest and tundra zones are about 40-60 m, tundra vegetation occurs on moraine hills and bedrocks slopes and summits. Pounikkos flark-and-mounds, tuft-and-fen bog complexes occur from 170 to 240 m.s.l. in depressions and valleys. Proportion of tundra vegetation is about 40%, mountain birch forest – 30%, wetlands – 20%, lakes, rivers and springs take 10% of area investigated.

scholarly journals Climate warming feedback from mountain birch forest expansion: reduced albedo dominates carbon uptake

2014 ◽  
Vol 20 (7) ◽  
pp. 2344-2355 ◽  
Author(s):  
Heleen A. de Wit ◽  
Anders Bryn ◽  
Annika Hofgaard ◽  
Jonas Karstensen ◽  
Maria M. Kvalevåg ◽  
...  
Keyword(s):  
Climate Warming ◽  
Birch Forest ◽  
Mountain Birch ◽  
Carbon Uptake ◽  
Forest Expansion ◽  
Mountain Birch Forest

scholarly journals Numerical Responses of Saproxylic Beetles to Rapid Increases in Dead Wood Availability following Geometrid Moth Outbreaks in Sub-Arctic Mountain Birch Forest

PLoS ONE ◽  
2014 ◽  
Vol 9 (6) ◽  
pp. e99624 ◽  
Author(s):  
Ole Petter Laksforsmo Vindstad ◽  
Sabrina Schultze ◽  
Jane Uhd Jepsen ◽  
Martin Biuw ◽  
Lauri Kapari ◽  
...  
Keyword(s):  
Dead Wood ◽  
Saproxylic Beetles ◽  
Birch Forest ◽  
Mountain Birch ◽  
Geometrid Moth ◽  
Mountain Birch Forest

scholarly journals Standardised spider (Arachnida, Araneae) inventory of Kilpisjärvi, Finland

2020 ◽  
Vol 8 ◽  
Author(s):  
Niina Kiljunen ◽  
Timo Pajunen ◽  
Caroline Fukushima ◽  
Arttu Soukainen ◽  
Jaakko Kuurne ◽  
...  
Keyword(s):  
Teaching And Learning ◽  
Abundant Species ◽  
Birch Forest ◽  
Mountain Birch ◽  
Comparable Data ◽  
Forest Habitat ◽  
Diversity Patterns ◽  
Biological Station ◽  
Mountain Birch Forest ◽  
Global Project

A spider taxonomy and ecology field course was organised in Kilpisjärvi Biological Station, northern Finland, in July 2019. During the course, four 50 × 50 m plots in mountain birch forest habitat were sampled following a standardised protocol. In addition to teaching and learning about spider identification, behaviour, ecology and sampling, the main aim of the course was to collect comparable data from the Kilpisjärvi area as part of a global project, with the purpose of uncovering global spider diversity patterns. A total of 2613 spiders were collected, of which 892 (34%) were adults. Due to uncertainty of juvenile identification, only adults are included in the data presented in this paper. The observed adult spiders belong to 51 species, 40 genera and 11 families, of which the Linyphiidae were the most rich and abundant with 28 (55%) species and 461 (52%) individuals. Lycosidae had six species and 286 individuals, Gnaphosidae five species and 19 individuals, Thomisidae four species and 24 individuals, Theridiidae two species and 23 individuals. All other six families had one species and less than 40 individuals. The most abundant species were the linyphiid Agnyphantes expunctus (204) and the lycosids Pardosa eiseni (164) and Pardosa hyperborea (107).

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