Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline?
Mountain birch forests (B. pubescens Ehrh. ssp. czerepanovii) at the subarctic treeline not only benefit from global warming, but are also increasingly affected by caterpillar outbreaks from foliage-feeding geometrid moths. Both of these factors have unknown consequences on soil organic carbon (SOC)...
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ftuniveasternfin:oai:erepo.uef.fi:123456789/26323 2023-05-15T17:42:55+02:00 Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? Meyer, Nele (University of Bayreuth) Xu, Yi (University of Helsinki) Karjalainen, Katri (University of Eastern Finland) Adamczyk, Sylwia (University of Helsinki) Biasi, Christina (University of Eastern Finland) van Delden, Lona (University of Eastern Finland) Martin, Angela (University of Helsinki) Mganga, Kevin (University of Helsinki) Myller, Kristiina (University of Eastern Finland) Sietiö, Outi-Maaria (University of Helsinki) Suominen, Otso (University of Turku) Karhu, Kristiina (University of Helsinki) 2021-10-20T02:10:12Z https://erepo.uef.fi/handle/123456789/26323 unknown https://datadryad.org/stash/share/073EYdywggP-UsimF4u7ZPP7N6gN3MvtZOH5NpsPI8E doi:10.5061/dryad.p5hqbzkqg https://erepo.uef.fi/handle/123456789/26323 https://creativecommons.org/publicdomain/zero/1.0/ CC0 PDM soil carbon soil respiration insect herbivory priming effects soil organic matter Soil organic carbon stocks 2021 ftuniveasternfin https://doi.org/10.5061/dryad.p5hqbzkqg 2022-12-11T06:55:03Z Mountain birch forests (B. pubescens Ehrh. ssp. czerepanovii) at the subarctic treeline not only benefit from global warming, but are also increasingly affected by caterpillar outbreaks from foliage-feeding geometrid moths. Both of these factors have unknown consequences on soil organic carbon (SOC) stocks and biogeochemical cycles. We measured SOC stocks down to the bedrock under living trees and under two stages of dead trees (12 and 55 years since moth outbreak) and treeless tundra in northern Finland. We also measured in-situ soil respiration, potential SOC decomposability, biological (enzyme activities, microbial biomass), and chemical (N, mineral N, pH) soil properties. SOC stocks were significantly higher under living trees (4.1±2.1 kg m²) than in the treeless tundra (2.4±0.6 kg m²), and remained at an elevated level even 12 (3.7±1.7 kg m²) and 55 years (4.9±3.0 kg m²) after tree death. Effects of tree status on SOC stocks decreased with increasing distance from the tree and with increasing depth, i.e. a significant effect of tree status was found in the organic layer, but not in mineral soil. Soil under living trees was characterized by higher mineral N contents, microbial biomass, microbial activity, and soil respiration compared with the treeless tundra; soils under dead trees were intermediate between these two. The results suggest accelerated organic matter turnover under living trees but a positive net effect on SOC stocks. Slowed organic matter turnover and continuous supply of deadwood may explain why SOC stocks remained elevated under dead trees, despite the heavy decrease in aboveground C stocks. We conclude that the increased occurrence of moth damage with climate change would have minor effects on SOC stocks, but ultimately decrease ecosystem C stocks (49% within 55 years in this area), if the mountain birch forests will not be able to recover from the outbreaks. 2 Other/Unknown Material Northern Finland Subarctic Tundra UEF eRepository (University of Eastern Finland) Deadwood ENVELOPE(-117.453,-117.453,56.733,56.733) |
institution |
Open Polar |
collection |
UEF eRepository (University of Eastern Finland) |
op_collection_id |
ftuniveasternfin |
language |
unknown |
topic |
soil carbon soil respiration insect herbivory priming effects soil organic matter Soil organic carbon stocks |
spellingShingle |
soil carbon soil respiration insect herbivory priming effects soil organic matter Soil organic carbon stocks Meyer, Nele (University of Bayreuth) Xu, Yi (University of Helsinki) Karjalainen, Katri (University of Eastern Finland) Adamczyk, Sylwia (University of Helsinki) Biasi, Christina (University of Eastern Finland) van Delden, Lona (University of Eastern Finland) Martin, Angela (University of Helsinki) Mganga, Kevin (University of Helsinki) Myller, Kristiina (University of Eastern Finland) Sietiö, Outi-Maaria (University of Helsinki) Suominen, Otso (University of Turku) Karhu, Kristiina (University of Helsinki) Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
topic_facet |
soil carbon soil respiration insect herbivory priming effects soil organic matter Soil organic carbon stocks |
description |
Mountain birch forests (B. pubescens Ehrh. ssp. czerepanovii) at the subarctic treeline not only benefit from global warming, but are also increasingly affected by caterpillar outbreaks from foliage-feeding geometrid moths. Both of these factors have unknown consequences on soil organic carbon (SOC) stocks and biogeochemical cycles. We measured SOC stocks down to the bedrock under living trees and under two stages of dead trees (12 and 55 years since moth outbreak) and treeless tundra in northern Finland. We also measured in-situ soil respiration, potential SOC decomposability, biological (enzyme activities, microbial biomass), and chemical (N, mineral N, pH) soil properties. SOC stocks were significantly higher under living trees (4.1±2.1 kg m²) than in the treeless tundra (2.4±0.6 kg m²), and remained at an elevated level even 12 (3.7±1.7 kg m²) and 55 years (4.9±3.0 kg m²) after tree death. Effects of tree status on SOC stocks decreased with increasing distance from the tree and with increasing depth, i.e. a significant effect of tree status was found in the organic layer, but not in mineral soil. Soil under living trees was characterized by higher mineral N contents, microbial biomass, microbial activity, and soil respiration compared with the treeless tundra; soils under dead trees were intermediate between these two. The results suggest accelerated organic matter turnover under living trees but a positive net effect on SOC stocks. Slowed organic matter turnover and continuous supply of deadwood may explain why SOC stocks remained elevated under dead trees, despite the heavy decrease in aboveground C stocks. We conclude that the increased occurrence of moth damage with climate change would have minor effects on SOC stocks, but ultimately decrease ecosystem C stocks (49% within 55 years in this area), if the mountain birch forests will not be able to recover from the outbreaks. 2 |
author |
Meyer, Nele (University of Bayreuth) Xu, Yi (University of Helsinki) Karjalainen, Katri (University of Eastern Finland) Adamczyk, Sylwia (University of Helsinki) Biasi, Christina (University of Eastern Finland) van Delden, Lona (University of Eastern Finland) Martin, Angela (University of Helsinki) Mganga, Kevin (University of Helsinki) Myller, Kristiina (University of Eastern Finland) Sietiö, Outi-Maaria (University of Helsinki) Suominen, Otso (University of Turku) Karhu, Kristiina (University of Helsinki) |
author_facet |
Meyer, Nele (University of Bayreuth) Xu, Yi (University of Helsinki) Karjalainen, Katri (University of Eastern Finland) Adamczyk, Sylwia (University of Helsinki) Biasi, Christina (University of Eastern Finland) van Delden, Lona (University of Eastern Finland) Martin, Angela (University of Helsinki) Mganga, Kevin (University of Helsinki) Myller, Kristiina (University of Eastern Finland) Sietiö, Outi-Maaria (University of Helsinki) Suominen, Otso (University of Turku) Karhu, Kristiina (University of Helsinki) |
author_sort |
Meyer, Nele (University of Bayreuth) |
title |
Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
title_short |
Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
title_full |
Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
title_fullStr |
Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
title_full_unstemmed |
Data from: Living, dead, and absent trees - How do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the Subarctic mountain birch treeline? |
title_sort |
data from: living, dead, and absent trees - how do moth outbreaks shape small-scale patterns of soil organic matter stocks and dynamics at the subarctic mountain birch treeline? |
publishDate |
2021 |
url |
https://erepo.uef.fi/handle/123456789/26323 |
long_lat |
ENVELOPE(-117.453,-117.453,56.733,56.733) |
geographic |
Deadwood |
geographic_facet |
Deadwood |
genre |
Northern Finland Subarctic Tundra |
genre_facet |
Northern Finland Subarctic Tundra |
op_relation |
https://datadryad.org/stash/share/073EYdywggP-UsimF4u7ZPP7N6gN3MvtZOH5NpsPI8E doi:10.5061/dryad.p5hqbzkqg https://erepo.uef.fi/handle/123456789/26323 |
op_rights |
https://creativecommons.org/publicdomain/zero/1.0/ |
op_rightsnorm |
CC0 PDM |
op_doi |
https://doi.org/10.5061/dryad.p5hqbzkqg |
_version_ |
1766144844639502336 |