dc.contributor.author | Daza Secco, Emmanuela | |
dc.date.accessioned | 2019-09-23T14:30:30Z | |
dc.date.available | 2019-09-23T14:30:30Z | |
dc.date.issued | 2019 | |
dc.identifier.isbn | 978-951-39-7843-3 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/65620 | |
dc.description.abstract | Due to their ability to store carbon in the form of peat, peatlands play a key role
in the carbon cycle. Besides carbon accumulation, peatlands release dissolved
organic matter to surface waters in their catchments, emit methane, and nitrous
oxide. Hence, they can strongly affect the global climate. In addition, peatlands
provide habitat for wildlife, help in water regulation, and store valuable palaeoenvironmental
information. As most ecosystems, peatlands are affected by
anthropogenic activities such as mining, peat extraction, forestry and agriculture.
Due to the increasing peatland degradation, monitoring methods have been
developed in order to evaluate their ecological state. Here, the usefulness of
testate amoebae (TA) as biological indicators of peatland disturbance and
restoration actions success, their use as surrogates of plant community responses
to peatland restoration, as well as indicators of disturbances caused by peat
extraction in surrounding lakes was assessed. To better understand the response
of TA to human-induced changes in peatlands, environmental variables broadly
known to affect TA such as temperature, water chemistry, and water table depth
were also analysed. TA appeared to be an excellent tool to evaluate disturbance
in Finnish peatlands as their responses to human-induced changes overrode
natural variation caused by spatiality and seasonality. On the other hand, TA
showed to respond faster to peatland restoration actions than plant communities.
Also, lake TA communities from sediments did not reflect effects of peat
extraction in lakes. Overall, the study showed promising results when
considering terrestrial TA as indicators of peatland land use changes, including
the evaluation of restoration success. However, more studies are required to
evaluate the usefulness of TA lake sediment communities as indicators of the
effects of peat extraction on receiving lakes. The results also highlighted the need
for future research on TA combining molecular tools and morphological analysis
to fully understand their potential use as indicators of peatland changes and to
further comprehend their complexity and biodiversity.
Keywords: Bioindicators, boreal catchments, community concordance, peatland
hydrology, restoration, seasonal variation, spatial variation | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | Jyväskylän yliopisto | |
dc.relation.ispartofseries | JYU Dissertations | |
dc.relation.haspart | <b>Artikkeli I:</b> Daza Secco, E., Haapalehto, T., Haimi, J., Meissner, K., & Tahvanainen, T. (2016). Do testate amoebae communities recover in concordance with vegetation after restoration of drained peatlands?. <i>Mires and Peat, 18, 12.</i> <a href="https://doi.org/10.19189/MaP.2016.OMB.231"target="_blank"> DOI: 10.19189/MaP.2016.OMB.231</a> | |
dc.relation.haspart | <b>Artikkeli II:</b> Daza Secco, E., Haimi, J., Högmander, H., Taskinen, S., Niku, J., & Meissner, K. (2018). Testate amoebae community analysis as a tool to assess biological impacts of peatland use. <i>Wetlands Ecology and Management, 26 (4), 597-611.</i> <a href="https://doi.org/10.1007/s11273-018-9594-y"target="_blank"> DOI: 10.1007/s11273-018-9594-y</a> | |
dc.relation.haspart | <b>Artikkeli III:</b> Daza Secco, Emmanuela; Haimi, Jari; Vähäkuopus, Tuija; Ojala, Antti; Valpola, Samu; Meissnner, Kristian (2020). Testate amoebae as a potential tracer of organic matter dislodged from peat extraction areas. <i>Boreal Environment Research, 25, 19–37.</i> <a href="http://www.borenv.net/BER/archive/pdfs/ber25/ber25-019-037.pdf"target="_blank"> www.borenv.net/BER/archive/pdfs/ber25/ber25-019-037.pdf </a> | |
dc.rights | In Copyright | |
dc.title | Assessing ecological effects of peatland use with testate amoebae | |
dc.type | doctoral thesis | |
dc.identifier.urn | URN:ISBN:978-951-39-7843-3 | |
dc.contributor.tiedekunta | Faculty of Mathematics and Science | en |
dc.contributor.tiedekunta | Matemaattis-luonnontieteellinen tiedekunta | fi |
dc.contributor.yliopisto | University of Jyväskylä | en |
dc.contributor.yliopisto | Jyväskylän yliopisto | fi |
dc.type.coar | http://purl.org/coar/resource_type/c_db06 | |
dc.relation.issn | 2489-9003 | |
dc.rights.copyright | © The Author & University of Jyväskylä | |
dc.rights.accesslevel | openAccess | |
dc.type.publication | doctoralThesis | |
dc.format.content | fulltext | |
dc.rights.url | https://rightsstatements.org/page/InC/1.0/ | |