Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia
Permafrost exerts strong controls on forest development through nutrient availability. The key question of this study was to assess the effect of site conditions on macroelement concentration and stable isotope (δ13C and δ15N) dynamics during the growing season, and nutrient stoichiometry and resorp...
Published in: | Forests |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2018
|
Subjects: | |
Online Access: | https://doi.org/10.3390/f9060314 https://doaj.org/article/37074ea3f7594d43a95e7e6a18dc7ef6 |
id |
ftdoajarticles:oai:doaj.org/article:37074ea3f7594d43a95e7e6a18dc7ef6 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:37074ea3f7594d43a95e7e6a18dc7ef6 2023-05-15T17:55:33+02:00 Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia Anatoly S. Prokushkin Frank Hagedorn Oleg S. Pokrovsky Jerome Viers Alexander V. Kirdyanov Oxana V. Masyagina Marina P. Prokushkina William H. McDowell 2018-06-01T00:00:00Z https://doi.org/10.3390/f9060314 https://doaj.org/article/37074ea3f7594d43a95e7e6a18dc7ef6 EN eng MDPI AG http://www.mdpi.com/1999-4907/9/6/314 https://doaj.org/toc/1999-4907 1999-4907 doi:10.3390/f9060314 https://doaj.org/article/37074ea3f7594d43a95e7e6a18dc7ef6 Forests, Vol 9, Iss 6, p 314 (2018) permafrost Siberian Larix spp foliar nutrients foliar δ13C and δ15N spatio-temporal variation stoichiometry nutrient resorption Plant ecology QK900-989 article 2018 ftdoajarticles https://doi.org/10.3390/f9060314 2022-12-31T02:21:41Z Permafrost exerts strong controls on forest development through nutrient availability. The key question of this study was to assess the effect of site conditions on macroelement concentration and stable isotope (δ13C and δ15N) dynamics during the growing season, and nutrient stoichiometry and resorption efficiency in the foliage of two common larch species in Siberia. Foliar nutrient (N, P and K) concentrations of larches grown on permafrost soils were exceptionally high in juvenile needles compared to those from a permafrost-free region (+50% and 130% for P and K), but were two-fold lower at needle maturation. Within permafrost terrain trees, sites with a warmer and deeper soil active layer had 15–60% greater nutrient concentrations and higher δ15N in their needles compared to shallower, colder soils. Larch of permafrost-free sites demonstrated an enrichment of foliage in 15N (+1.4% to +2.4‰) in comparison to permafrost terrain (−2.0% to −6.9‰). At all sites, foliar δ13C decreased from June to August, which very likely results from an increasing contribution of current photoassimilates to build foliar biomass. With senescence, nutrient concentrations in larch needles decreased significantly by 60–90%. This strong ability of larch to retain nutrients through resorption is the essential mechanism that maintains tree growth early in the growing season when soil remains frozen. The high resorptive efficiency found for K and P for larches established on permafrost suggests nutrient limitation of tree growth within the Central Siberian Plateau not only by N, as previously reported, but also by P and K. The increasing nutrient concentrations and a 15N enrichment of foliage towards warmer sites was paralleled by an up to 50-fold increase in biomass production, strongly suggesting that accelerated nutrient cycling with permafrost degradation contributes to an increased productivity of Siberian larch forests. Article in Journal/Newspaper permafrost Siberia Directory of Open Access Journals: DOAJ Articles Forests 9 6 314 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost Siberian Larix spp foliar nutrients foliar δ13C and δ15N spatio-temporal variation stoichiometry nutrient resorption Plant ecology QK900-989 |
spellingShingle |
permafrost Siberian Larix spp foliar nutrients foliar δ13C and δ15N spatio-temporal variation stoichiometry nutrient resorption Plant ecology QK900-989 Anatoly S. Prokushkin Frank Hagedorn Oleg S. Pokrovsky Jerome Viers Alexander V. Kirdyanov Oxana V. Masyagina Marina P. Prokushkina William H. McDowell Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
topic_facet |
permafrost Siberian Larix spp foliar nutrients foliar δ13C and δ15N spatio-temporal variation stoichiometry nutrient resorption Plant ecology QK900-989 |
description |
Permafrost exerts strong controls on forest development through nutrient availability. The key question of this study was to assess the effect of site conditions on macroelement concentration and stable isotope (δ13C and δ15N) dynamics during the growing season, and nutrient stoichiometry and resorption efficiency in the foliage of two common larch species in Siberia. Foliar nutrient (N, P and K) concentrations of larches grown on permafrost soils were exceptionally high in juvenile needles compared to those from a permafrost-free region (+50% and 130% for P and K), but were two-fold lower at needle maturation. Within permafrost terrain trees, sites with a warmer and deeper soil active layer had 15–60% greater nutrient concentrations and higher δ15N in their needles compared to shallower, colder soils. Larch of permafrost-free sites demonstrated an enrichment of foliage in 15N (+1.4% to +2.4‰) in comparison to permafrost terrain (−2.0% to −6.9‰). At all sites, foliar δ13C decreased from June to August, which very likely results from an increasing contribution of current photoassimilates to build foliar biomass. With senescence, nutrient concentrations in larch needles decreased significantly by 60–90%. This strong ability of larch to retain nutrients through resorption is the essential mechanism that maintains tree growth early in the growing season when soil remains frozen. The high resorptive efficiency found for K and P for larches established on permafrost suggests nutrient limitation of tree growth within the Central Siberian Plateau not only by N, as previously reported, but also by P and K. The increasing nutrient concentrations and a 15N enrichment of foliage towards warmer sites was paralleled by an up to 50-fold increase in biomass production, strongly suggesting that accelerated nutrient cycling with permafrost degradation contributes to an increased productivity of Siberian larch forests. |
format |
Article in Journal/Newspaper |
author |
Anatoly S. Prokushkin Frank Hagedorn Oleg S. Pokrovsky Jerome Viers Alexander V. Kirdyanov Oxana V. Masyagina Marina P. Prokushkina William H. McDowell |
author_facet |
Anatoly S. Prokushkin Frank Hagedorn Oleg S. Pokrovsky Jerome Viers Alexander V. Kirdyanov Oxana V. Masyagina Marina P. Prokushkina William H. McDowell |
author_sort |
Anatoly S. Prokushkin |
title |
Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
title_short |
Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
title_full |
Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
title_fullStr |
Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
title_full_unstemmed |
Permafrost Regime Affects the Nutritional Status and Productivity of Larches in Central Siberia |
title_sort |
permafrost regime affects the nutritional status and productivity of larches in central siberia |
publisher |
MDPI AG |
publishDate |
2018 |
url |
https://doi.org/10.3390/f9060314 https://doaj.org/article/37074ea3f7594d43a95e7e6a18dc7ef6 |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_source |
Forests, Vol 9, Iss 6, p 314 (2018) |
op_relation |
http://www.mdpi.com/1999-4907/9/6/314 https://doaj.org/toc/1999-4907 1999-4907 doi:10.3390/f9060314 https://doaj.org/article/37074ea3f7594d43a95e7e6a18dc7ef6 |
op_doi |
https://doi.org/10.3390/f9060314 |
container_title |
Forests |
container_volume |
9 |
container_issue |
6 |
container_start_page |
314 |
_version_ |
1766163495070466048 |