Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation
The presented study was conducted to get a comprehensive overview on limiting and available nutrients in the soil-vegetation system of arctic polygonal tundra landscapes and to give an outlook into the future state of nutrient limitation in this ecosystem in the course of climate change. The objecti...
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Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
2016
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ftsubhamburg:oai:ediss.sub.uni-hamburg.de:ediss/6708 2023-05-15T14:48:42+02:00 Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation Nährstoffverfügbarkeit und -limitierung in Böden der polygonal Tundra in der Sakha Republik, Russische Föderation Beermann, Fabian Kutzbach, Lars (Prof. Dr.) 2016-01-01 http://nbn-resolving.de/urn:nbn:de:gbv:18-78602 https://ediss.sub.uni-hamburg.de/handle/ediss/6708 eng eng Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky http://nbn-resolving.de/urn:nbn:de:gbv:18-78602 https://ediss.sub.uni-hamburg.de/handle/ediss/6708 http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess No license Nitrogen Phosphorus Permafrost thaw Nutrient Stoichiometrie Arcitc 550 Geowissenschaften 38.47 Moore 38.61 Bodenbildung Bodenentwicklung Arktis Nährstoff Stöchiometrie ddc:550 doctoralThesis doc-type:doctoralThesis 2016 ftsubhamburg 2022-11-09T07:11:20Z The presented study was conducted to get a comprehensive overview on limiting and available nutrients in the soil-vegetation system of arctic polygonal tundra landscapes and to give an outlook into the future state of nutrient limitation in this ecosystem in the course of climate change. The objectives of this study were in detail: (1) To analyze availability and limitation of nutrients in the soil-vegetation system of an arctic polygonal tundra landscape, (2) to quantify pools of inorganic nitrogen within the perennially frozen ground and the active layer of different soils in the Siberian arctic, (3) to give an estimate of potential annual nitrogen release rates in the course of climate change, and (4) to assess the changes of microbial growth, microbial respiration and nitrogen availability in arctic soils in response to increased temperatures by a soil incubation study. Three different sites in the Eastern Siberian arctic were investigated in this study. The westernmost study site was located in the Lena River Delta The second study area was located in the Indigirka and the third and easternmost study area was located in the Kolyma River Delta. All three study areas were located in the Siberian zone of continuous permafrost and were characterized by polygonal tundra. Limiting and available nutrients in the polygonal tundra in the Indigirka Lowlands were analyzed by a stoichiometric approach, based on the N/P ratios in the vegetation biomass, the microbial biomass, the pools of inorganic and organic nutrients and the total elemental pools. Eleven soil profiles down to one meter depth below surface at the three different study areas were studied to quantify pools of inorganic nitrogen in arctic permafrost-affected soils. Furthermore, the potential thickening of the seasonally unfrozen soil layer under higher temperatures for the three study areas was modeled to estimate potential annual nitrogen mobilization from thawing permafrost. In addition, soil samples of one soil profile from the study area in the ... Doctoral or Postdoctoral Thesis Arctic Arktis Arktis* Climate change kolyma river lena river permafrost Sakha Republic Tundra ediss.sub.hamburg (Staats- und Universitätsbibliothek Hamburg, Carl von Ossietzky) Arctic Sakha Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Indigirka ENVELOPE(149.609,149.609,70.929,70.929) |
institution |
Open Polar |
collection |
ediss.sub.hamburg (Staats- und Universitätsbibliothek Hamburg, Carl von Ossietzky) |
op_collection_id |
ftsubhamburg |
language |
English |
topic |
Nitrogen Phosphorus Permafrost thaw Nutrient Stoichiometrie Arcitc 550 Geowissenschaften 38.47 Moore 38.61 Bodenbildung Bodenentwicklung Arktis Nährstoff Stöchiometrie ddc:550 |
spellingShingle |
Nitrogen Phosphorus Permafrost thaw Nutrient Stoichiometrie Arcitc 550 Geowissenschaften 38.47 Moore 38.61 Bodenbildung Bodenentwicklung Arktis Nährstoff Stöchiometrie ddc:550 Beermann, Fabian Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
topic_facet |
Nitrogen Phosphorus Permafrost thaw Nutrient Stoichiometrie Arcitc 550 Geowissenschaften 38.47 Moore 38.61 Bodenbildung Bodenentwicklung Arktis Nährstoff Stöchiometrie ddc:550 |
description |
The presented study was conducted to get a comprehensive overview on limiting and available nutrients in the soil-vegetation system of arctic polygonal tundra landscapes and to give an outlook into the future state of nutrient limitation in this ecosystem in the course of climate change. The objectives of this study were in detail: (1) To analyze availability and limitation of nutrients in the soil-vegetation system of an arctic polygonal tundra landscape, (2) to quantify pools of inorganic nitrogen within the perennially frozen ground and the active layer of different soils in the Siberian arctic, (3) to give an estimate of potential annual nitrogen release rates in the course of climate change, and (4) to assess the changes of microbial growth, microbial respiration and nitrogen availability in arctic soils in response to increased temperatures by a soil incubation study. Three different sites in the Eastern Siberian arctic were investigated in this study. The westernmost study site was located in the Lena River Delta The second study area was located in the Indigirka and the third and easternmost study area was located in the Kolyma River Delta. All three study areas were located in the Siberian zone of continuous permafrost and were characterized by polygonal tundra. Limiting and available nutrients in the polygonal tundra in the Indigirka Lowlands were analyzed by a stoichiometric approach, based on the N/P ratios in the vegetation biomass, the microbial biomass, the pools of inorganic and organic nutrients and the total elemental pools. Eleven soil profiles down to one meter depth below surface at the three different study areas were studied to quantify pools of inorganic nitrogen in arctic permafrost-affected soils. Furthermore, the potential thickening of the seasonally unfrozen soil layer under higher temperatures for the three study areas was modeled to estimate potential annual nitrogen mobilization from thawing permafrost. In addition, soil samples of one soil profile from the study area in the ... |
author2 |
Kutzbach, Lars (Prof. Dr.) |
format |
Doctoral or Postdoctoral Thesis |
author |
Beermann, Fabian |
author_facet |
Beermann, Fabian |
author_sort |
Beermann, Fabian |
title |
Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
title_short |
Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
title_full |
Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
title_fullStr |
Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
title_full_unstemmed |
Nutrient availability and limitation within soils of polygonal tundra in the Sakha Republic, Russian Federation |
title_sort |
nutrient availability and limitation within soils of polygonal tundra in the sakha republic, russian federation |
publisher |
Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky |
publishDate |
2016 |
url |
http://nbn-resolving.de/urn:nbn:de:gbv:18-78602 https://ediss.sub.uni-hamburg.de/handle/ediss/6708 |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(149.609,149.609,70.929,70.929) |
geographic |
Arctic Sakha Kolyma Indigirka |
geographic_facet |
Arctic Sakha Kolyma Indigirka |
genre |
Arctic Arktis Arktis* Climate change kolyma river lena river permafrost Sakha Republic Tundra |
genre_facet |
Arctic Arktis Arktis* Climate change kolyma river lena river permafrost Sakha Republic Tundra |
op_relation |
http://nbn-resolving.de/urn:nbn:de:gbv:18-78602 https://ediss.sub.uni-hamburg.de/handle/ediss/6708 |
op_rights |
http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess No license |
_version_ |
1766319792489234432 |