Lysimeter Study on the Effects of Different Rain Qualities on Element Fluxes from Shallow Mountain Soils in Southern Norway

Strand, Liv Inger; Abrahamsen, Gunnar; Stuanes, Arne O.

doi:10.1007/s11270-005-7272-1

Cited by 8 publications

(5 citation statements)

References 31 publications

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“…A geometrid moth outbreak 'rarely causes noticeable defoliation at more southern latitudes' in Norway (Neuvonen et al 2005, 126) and forest fires have not been reported in the study area 262 A. Bryn NORSK GEOGRAFISK TIDSSKRIFT 62 (2008) from the 20th century. The only notably exception was a slightly reduced nitrogen downfall (Strand et al 2005) and an increased elk population (Solberg et al 2006). Both factors can constrain the speed of forest regeneration, but cannot change its prevailing direction.…”

Section: The Biophysical Cultural Landscape and Natural Dynamicsmentioning

confidence: 99%

Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation?

Bryn¹

2008

Norsk Geografisk Tidsskrift - Norwegian Journal of Geography

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Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation? ANDERS BRYN Bryn, A. 2008. Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation? Norsk Geografisk TidsskriftÁNorwegian Journal of Geography Vol. 62, 251Á270. Oslo. ISSN 0029-1951.The forest limits of south-east Norway have expanded to higher altitudes. Two main processes are believed to cause these changes: regrowth after abandonment of human utilisation and recent climate changes. The article aims at separating the effects of these two processes on the upper forest limits and recent forest expansion. Four datasets representing 161.5 km 2 have been used: climate data, downscaled climate change scenario data, forest height growth, and four vegetation maps. The maps represent the years 1959 and 2001, potential natural vegetation (PNV), and a climate change scenario (CCS). The recent upper potential climatic and edaphic forest limit (UPCEFL) was used to define the potential for forest regrowth after the abandonment of human utilisation. Forest height growth and climate data were then used to analyse any supplementary effect of recent climate change. The projected future forest limits were based on the IPCC IS92a scenario for 2020Á2049. The results show that raised forest limits and forest range expansion often attributed to recent climate change is rather the product of regrowth, a process that was climatically retarded from 1959 to 1995. For the period 1995Á2006, the data indicate a preliminary effect of climate change escalating the regrowth and probably pushing the future forest limits to higher altitudes.

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Section: The Biophysical Cultural Landscape and Natural Dynamicsmentioning

confidence: 99%

Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation?

Bryn¹

2008

Norsk Geografisk Tidsskrift - Norwegian Journal of Geography

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“…There is also evidence of variation in tundra or alpine soil Al and Fe being linked to topography, with higher Al and Fe concentrations e.g. at the bottom of a hill slope or in depressions (Litaor 1992;Ping et al 1998;Strand et al 2005) or related to soil age (Giblin et al 1991). Whether inherent differences in the distribution of Al and Fe also can affect P availability in tundra ecosystems still remains unknown; we do, however, believe that accumulation of Al and Fe in organic soils might be a factor that hitherto has been overlooked.…”

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confidence: 99%

Phosphorus availability and microbial respiration across different tundra vegetation types

et al. 2011

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Phosphorus (P) is an important nutrient in tundra ecosystems that co-limits or in some cases limits primary production. The availability of P is largely driven by soil characteristics, e.g., pH, organic carbon, and abundance of P-sorbing elements such as aluminium (Al) or iron (Fe). We tested how vegetation and soil properties relate to P availability across different tundra vegetation types. The different soil P fractions in the organic horizon were measured and plant foliar nitrogen (N) to P ratio and a plant bioassay was used as indicators of plant nutrient status. Microbial bioassays were used to study microbial respiration kinetics and in response to carbon, N, and P amendments. The distribution of P fractions differed significantly across vegetation types; labile fractions of P were less abundant in meadow sites compared to heath sites. Calciumphosphates seemed to be an important P-fraction in meadows, but were only found in lower concentrations in the heath. There were only small differences in NaOH-extractable P between the vegetation types and this correlated with the distribution of oxalateextractable Al. Plant N:P ratios and the plant bioassay indicated decreasing P availability from dry heath to mesic heath to mesic meadow. The microbial bioassay suggests that the heterotrophic microbial community is C-limited with N as a secondary limiting nutrient although there were indications that microbial P availability was lower in the meadow sites. Overall, we suggest that the observed variations in soil P across vegetation types are affecting both plant and microbial function although the differences seem to be relatively small.

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“…This does not seem to be the case in Froan, and Molinia caerulea has not yet been registered in Froan (Moen et al 2006b;Bryn 2008a). Moreover, the last decades of industrial legislations to hinder acid rain have actually reduced the nitrogen pollution over Norway during recent years (Strand et al 2005), although the long-term response of reversed pollution is still unclear (Terry et al 2004;Holden et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Rule-based GIS-modelling for management purposes: A case study from the islands of Froan, Sør-Trøndelag, mid-western Norway

Bryn¹,

Dramstad²,

Fjellstad³

et al. 2010

Norsk Geografisk Tidsskrift - Norwegian Journal of Geography

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The coastal heath region along the western coast of Norway, dominated by Calluna vulgaris, is undergoing rapid change. Vegetation changes are caused by changes in management, including reduced frequency or abandonment of periodic heath burning and reduced cutting and grazing. The islands of Froan, in the outermost part of Sør-Trøndelag County in mid-western Norway, are dominated by coastal heath in a state of recession due to reduced traditional land use. The coastal heath is acknowledged as vulnerable and valuable by national environmental authorities, and local landscape management is supported by different national subsidies. The authors mapped the vegetation on Froan and used rule-based GIS-modelling to predict the relative potential for future vegetation changes. The model was based on a range of map layers, including management themes such as history of heath burning and peat removal, current practices of sheep grazing, and also themes derived from the vegetation map, such as soil nutrients, soil moisture and present management status. The resulting model output provides relative probabilities of future changes under different land-use scenarios, and highlights where management efforts should be focused in order to maintain the traditional landscape character.

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Lysimeter Study on the Effects of Different Rain Qualities on Element Fluxes from Shallow Mountain Soils in Southern Norway

Cited by 8 publications

References 31 publications

Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation?

Recent forest limit changes in south-east Norway: Effects of climate change or regrowth after abandoned utilisation?

Phosphorus availability and microbial respiration across different tundra vegetation types

Rule-based GIS-modelling for management purposes: A case study from the islands of Froan, Sør-Trøndelag, mid-western Norway

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