Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada
Northern peatlands, which are highly heterogeneous ecosystems, are a globally important carbon (C) store. Understanding the drivers and predicting the future trajectory of the peatland C store requires upscaling from cores and sites to regions and continents, alongside a detailed understanding of th...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/318426 2024-01-07T09:46:56+01:00 Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada Zhang, Hui Amesbury, Matthew Piilo, Sanna Garneau, Michelle Gallego-Sala, Angela Väliranta, Minna INAR Physics Helsinki Institute of Sustainability Science (HELSUS) Environmental Change Research Unit (ECRU) Ecosystems and Environment Research Programme 2020-08-20T07:40:02Z 12 application/pdf http://hdl.handle.net/10138/318426 eng eng Frontiers Media 10.3389/fevo.2020.00228 Zhang , H , Amesbury , M , Piilo , S , Garneau , M , Gallego-Sala , A & Väliranta , M 2020 , ' Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada ' , Frontiers in Ecology and Evolution , vol. 8 , 228 . https://doi.org/10.3389/fevo.2020.00228 ORCID: /0000-0003-0129-7240/work/79179844 ORCID: /0000-0002-4667-003X/work/79183358 034ac0d5-bbdd-4b31-aee9-bc3741f2e999 http://hdl.handle.net/10138/318426 000555834000001 cc_by openAccess info:eu-repo/semantics/openAccess 1181 Ecology evolutionary biology testate amoebae functional traits palaeohydrology vegetation carbon accumulation replicated sites peatlands climate change CLIMATE-CHANGE BOG RESPONSES DYNAMICS COMMUNITIES IMPACT Article publishedVersion 2020 ftunivhelsihelda 2023-12-14T00:06:43Z Northern peatlands, which are highly heterogeneous ecosystems, are a globally important carbon (C) store. Understanding the drivers and predicting the future trajectory of the peatland C store requires upscaling from cores and sites to regions and continents, alongside a detailed understanding of the mechanisms governing their C sequestration. Studies incorporating replication are therefore important to quantify how peatland heterogeneity may affect upscaling from local-scale dynamics to models. In addition, we need to better understand the processes driving observed variability, but the interplay between plants, microbes and C cycling in peatlands remains poorly understood. One approach to address both issues is to examine replicated microbiological functional traits within a multi-proxy framework to provide an ecosystem-level perspective on ecological and biogeochemical processes. Peatland testate amoebae are a functionally important group of protists that are well suited to such an approach. Analysing testate amoeba functional traits provides an opportunity to examine processes that may affect key peatland ecosystem services, such as C sequestration. Here, we compared four key testate amoeba functional traits (mixotrophy, biovolume, aperture size and aperture position) to C accumulation, hydrological and vegetation changes in 12 post-Little Ice Age peat records. Samples were collected from high-boreal and low-subarctic regions in northwestern Quebec, Canada in an experimental design that includes internal and external replication at both site and regional scales. Our results showed that correspondence between C accumulation, hydrology and testate amoeba functional traits varied, but recent changes in mixotrophy and aperture size, which may affect peatland C sequestration potential and microbial food web structure, respectively, showed tentative links to recent C accumulation increases. Vegetation, especiallySphagnumabundance was important in promoting mixotrophy and small aperture size in testate amoeba ... Article in Journal/Newspaper Subarctic HELDA – University of Helsinki Open Repository Canada Frontiers in Ecology and Evolution 8 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
1181 Ecology evolutionary biology testate amoebae functional traits palaeohydrology vegetation carbon accumulation replicated sites peatlands climate change CLIMATE-CHANGE BOG RESPONSES DYNAMICS COMMUNITIES IMPACT |
spellingShingle |
1181 Ecology evolutionary biology testate amoebae functional traits palaeohydrology vegetation carbon accumulation replicated sites peatlands climate change CLIMATE-CHANGE BOG RESPONSES DYNAMICS COMMUNITIES IMPACT Zhang, Hui Amesbury, Matthew Piilo, Sanna Garneau, Michelle Gallego-Sala, Angela Väliranta, Minna Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
topic_facet |
1181 Ecology evolutionary biology testate amoebae functional traits palaeohydrology vegetation carbon accumulation replicated sites peatlands climate change CLIMATE-CHANGE BOG RESPONSES DYNAMICS COMMUNITIES IMPACT |
description |
Northern peatlands, which are highly heterogeneous ecosystems, are a globally important carbon (C) store. Understanding the drivers and predicting the future trajectory of the peatland C store requires upscaling from cores and sites to regions and continents, alongside a detailed understanding of the mechanisms governing their C sequestration. Studies incorporating replication are therefore important to quantify how peatland heterogeneity may affect upscaling from local-scale dynamics to models. In addition, we need to better understand the processes driving observed variability, but the interplay between plants, microbes and C cycling in peatlands remains poorly understood. One approach to address both issues is to examine replicated microbiological functional traits within a multi-proxy framework to provide an ecosystem-level perspective on ecological and biogeochemical processes. Peatland testate amoebae are a functionally important group of protists that are well suited to such an approach. Analysing testate amoeba functional traits provides an opportunity to examine processes that may affect key peatland ecosystem services, such as C sequestration. Here, we compared four key testate amoeba functional traits (mixotrophy, biovolume, aperture size and aperture position) to C accumulation, hydrological and vegetation changes in 12 post-Little Ice Age peat records. Samples were collected from high-boreal and low-subarctic regions in northwestern Quebec, Canada in an experimental design that includes internal and external replication at both site and regional scales. Our results showed that correspondence between C accumulation, hydrology and testate amoeba functional traits varied, but recent changes in mixotrophy and aperture size, which may affect peatland C sequestration potential and microbial food web structure, respectively, showed tentative links to recent C accumulation increases. Vegetation, especiallySphagnumabundance was important in promoting mixotrophy and small aperture size in testate amoeba ... |
author2 |
INAR Physics Helsinki Institute of Sustainability Science (HELSUS) Environmental Change Research Unit (ECRU) Ecosystems and Environment Research Programme |
format |
Article in Journal/Newspaper |
author |
Zhang, Hui Amesbury, Matthew Piilo, Sanna Garneau, Michelle Gallego-Sala, Angela Väliranta, Minna |
author_facet |
Zhang, Hui Amesbury, Matthew Piilo, Sanna Garneau, Michelle Gallego-Sala, Angela Väliranta, Minna |
author_sort |
Zhang, Hui |
title |
Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
title_short |
Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
title_full |
Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
title_fullStr |
Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
title_full_unstemmed |
Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada |
title_sort |
recent changes in peatland testate amoeba functional traits and hydrology within a replicated site network in northwestern quebec, canada |
publisher |
Frontiers Media |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/318426 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
10.3389/fevo.2020.00228 Zhang , H , Amesbury , M , Piilo , S , Garneau , M , Gallego-Sala , A & Väliranta , M 2020 , ' Recent Changes in Peatland Testate Amoeba Functional Traits and Hydrology Within a Replicated Site Network in Northwestern Quebec, Canada ' , Frontiers in Ecology and Evolution , vol. 8 , 228 . https://doi.org/10.3389/fevo.2020.00228 ORCID: /0000-0003-0129-7240/work/79179844 ORCID: /0000-0002-4667-003X/work/79183358 034ac0d5-bbdd-4b31-aee9-bc3741f2e999 http://hdl.handle.net/10138/318426 000555834000001 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
8 |
_version_ |
1787428852229734400 |