Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic
Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller
Wiley-Blackwell
Published 2018
Wiley-Blackwell
Published 2018
| Publication Date: |
2018-03-14
|
|---|---|
| Publisher: |
Wiley-Blackwell
|
| Print ISSN: |
1354-1013
|
| Electronic ISSN: |
1365-2486
|
| Topics: |
Biology
Energy, Environment Protection, Nuclear Power Engineering
Geography
|
| Published by: |
| _version_ | 1839207954031575041 |
|---|---|
| autor | Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller |
| beschreibung | Climate change is rapidly reshaping arctic landscapes through shifts in vegetation cover and productivity, soil resource mobilization, and hydrological regimes. The implications of these changes for stream ecosystems and food webs is unclear and will depend largely on microbial biofilm responses to concurrent shifts in temperature, light, and resource supply from land. To study those responses, we used nutrient diffusing substrates to manipulate resource supply to biofilm communities along regional gradients in stream temperature, riparian shading, and dissolved organic carbon (DOC) loading in arctic Sweden. We found strong nitrogen (N) limitation across this gradient for gross primary production, community respiration and chlorophyll- a accumulation. For unamended biofilms, activity and biomass accrual were not driven by any single physical or chemical driver across this region. However, the magnitude of biofilm response to N addition did: in tundra streams, biofilm response was constrained by thermal regimes, whereas variation in light availability regulated this response in birch and coniferous forest streams. Furthermore, heterotrophic responses to experimental N addition increased across the region with greater stream water concentrations of DOC relative to inorganic N. Thus, future shifts in resource supply to these ecosystems are likely to interact with other concurrent environmental changes to regulate stream productivity. Indeed, our results suggest that in the absence of increased nutrient inputs, arctic streams will be less sensitive to future changes in other habitat variables such as temperature and DOC loading. This article is protected by copyright. All rights reserved. |
| citation_standardnr | 6205134 |
| datenlieferant | ipn_articles |
| feed_id | 5833 |
| feed_publisher | Wiley-Blackwell |
| feed_publisher_url | http://www.wiley.com/wiley-blackwell |
| insertion_date | 2018-03-14 |
| journaleissn | 1365-2486 |
| journalissn | 1354-1013 |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | Wiley-Blackwell |
| quelle | Global Change Biology |
| relation | http://onlinelibrary.wiley.com/resolve/doi?DOI=10.1111%2Fgcb.14117 |
| search_space | articles |
| shingle_author_1 | Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller |
| shingle_author_2 | Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller |
| shingle_author_3 | Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller |
| shingle_author_4 | Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller |
| shingle_catch_all_1 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic Climate change is rapidly reshaping arctic landscapes through shifts in vegetation cover and productivity, soil resource mobilization, and hydrological regimes. The implications of these changes for stream ecosystems and food webs is unclear and will depend largely on microbial biofilm responses to concurrent shifts in temperature, light, and resource supply from land. To study those responses, we used nutrient diffusing substrates to manipulate resource supply to biofilm communities along regional gradients in stream temperature, riparian shading, and dissolved organic carbon (DOC) loading in arctic Sweden. We found strong nitrogen (N) limitation across this gradient for gross primary production, community respiration and chlorophyll- a accumulation. For unamended biofilms, activity and biomass accrual were not driven by any single physical or chemical driver across this region. However, the magnitude of biofilm response to N addition did: in tundra streams, biofilm response was constrained by thermal regimes, whereas variation in light availability regulated this response in birch and coniferous forest streams. Furthermore, heterotrophic responses to experimental N addition increased across the region with greater stream water concentrations of DOC relative to inorganic N. Thus, future shifts in resource supply to these ecosystems are likely to interact with other concurrent environmental changes to regulate stream productivity. Indeed, our results suggest that in the absence of increased nutrient inputs, arctic streams will be less sensitive to future changes in other habitat variables such as temperature and DOC loading. This article is protected by copyright. All rights reserved. Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller Wiley-Blackwell 1354-1013 13541013 1365-2486 13652486 |
| shingle_catch_all_2 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic Climate change is rapidly reshaping arctic landscapes through shifts in vegetation cover and productivity, soil resource mobilization, and hydrological regimes. The implications of these changes for stream ecosystems and food webs is unclear and will depend largely on microbial biofilm responses to concurrent shifts in temperature, light, and resource supply from land. To study those responses, we used nutrient diffusing substrates to manipulate resource supply to biofilm communities along regional gradients in stream temperature, riparian shading, and dissolved organic carbon (DOC) loading in arctic Sweden. We found strong nitrogen (N) limitation across this gradient for gross primary production, community respiration and chlorophyll- a accumulation. For unamended biofilms, activity and biomass accrual were not driven by any single physical or chemical driver across this region. However, the magnitude of biofilm response to N addition did: in tundra streams, biofilm response was constrained by thermal regimes, whereas variation in light availability regulated this response in birch and coniferous forest streams. Furthermore, heterotrophic responses to experimental N addition increased across the region with greater stream water concentrations of DOC relative to inorganic N. Thus, future shifts in resource supply to these ecosystems are likely to interact with other concurrent environmental changes to regulate stream productivity. Indeed, our results suggest that in the absence of increased nutrient inputs, arctic streams will be less sensitive to future changes in other habitat variables such as temperature and DOC loading. This article is protected by copyright. All rights reserved. Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller Wiley-Blackwell 1354-1013 13541013 1365-2486 13652486 |
| shingle_catch_all_3 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic Climate change is rapidly reshaping arctic landscapes through shifts in vegetation cover and productivity, soil resource mobilization, and hydrological regimes. The implications of these changes for stream ecosystems and food webs is unclear and will depend largely on microbial biofilm responses to concurrent shifts in temperature, light, and resource supply from land. To study those responses, we used nutrient diffusing substrates to manipulate resource supply to biofilm communities along regional gradients in stream temperature, riparian shading, and dissolved organic carbon (DOC) loading in arctic Sweden. We found strong nitrogen (N) limitation across this gradient for gross primary production, community respiration and chlorophyll- a accumulation. For unamended biofilms, activity and biomass accrual were not driven by any single physical or chemical driver across this region. However, the magnitude of biofilm response to N addition did: in tundra streams, biofilm response was constrained by thermal regimes, whereas variation in light availability regulated this response in birch and coniferous forest streams. Furthermore, heterotrophic responses to experimental N addition increased across the region with greater stream water concentrations of DOC relative to inorganic N. Thus, future shifts in resource supply to these ecosystems are likely to interact with other concurrent environmental changes to regulate stream productivity. Indeed, our results suggest that in the absence of increased nutrient inputs, arctic streams will be less sensitive to future changes in other habitat variables such as temperature and DOC loading. This article is protected by copyright. All rights reserved. Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller Wiley-Blackwell 1354-1013 13541013 1365-2486 13652486 |
| shingle_catch_all_4 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic Climate change is rapidly reshaping arctic landscapes through shifts in vegetation cover and productivity, soil resource mobilization, and hydrological regimes. The implications of these changes for stream ecosystems and food webs is unclear and will depend largely on microbial biofilm responses to concurrent shifts in temperature, light, and resource supply from land. To study those responses, we used nutrient diffusing substrates to manipulate resource supply to biofilm communities along regional gradients in stream temperature, riparian shading, and dissolved organic carbon (DOC) loading in arctic Sweden. We found strong nitrogen (N) limitation across this gradient for gross primary production, community respiration and chlorophyll- a accumulation. For unamended biofilms, activity and biomass accrual were not driven by any single physical or chemical driver across this region. However, the magnitude of biofilm response to N addition did: in tundra streams, biofilm response was constrained by thermal regimes, whereas variation in light availability regulated this response in birch and coniferous forest streams. Furthermore, heterotrophic responses to experimental N addition increased across the region with greater stream water concentrations of DOC relative to inorganic N. Thus, future shifts in resource supply to these ecosystems are likely to interact with other concurrent environmental changes to regulate stream productivity. Indeed, our results suggest that in the absence of increased nutrient inputs, arctic streams will be less sensitive to future changes in other habitat variables such as temperature and DOC loading. This article is protected by copyright. All rights reserved. Maria Myrstener, Gerard Rocher-Ros, Ryan M. Burrows, Ann-Kristin Bergström, Reiner Giesler, Ryan A. Sponseller Wiley-Blackwell 1354-1013 13541013 1365-2486 13652486 |
| shingle_title_1 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| shingle_title_2 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| shingle_title_3 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| shingle_title_4 | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| timestamp | 2025-07-31T23:43:07.861Z |
| titel | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| titel_suche | Persistent nitrogen limitation of stream biofilm communities along climate gradients in the arctic |
| topic | W ZP R |
| uid | ipn_articles_6205134 |