Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications
Anthropogenic climate change is one of the biggest threats to biodiversity and ecosystem functioning in high-latitude ecosystems. These regions are warming faster than the global mean, prompting changes in soil temperature, precipitation, and the onset and length of seasons. Species-level responses...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/335446 2023-08-20T04:07:31+02:00 Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications Robinson, Sinikka Høye, Toke University of Helsinki, Faculty of Biological and Environmental Sciences Doctoral Programme in Wildlife Biology Helsingin yliopisto, bio- ja ympäristötieteellinen tiedekunta Luonnonvaraisten eliöiden tutkimuksen tohtoriohjelma Helsingfors universitet, bio- och miljövetenskapliga fakulteten Doktorandprogrammet i forskning om vilda organismer Mikola, Juha O'Gorman, Eoin 2021-10-19T09:21:21Z application/pdf http://hdl.handle.net/10138/335446 eng eng Helsingin yliopisto Helsingfors universitet University of Helsinki URN:ISBN:978-951-51-7621-9 http://hdl.handle.net/10138/335446 URN:ISBN:978-951-51-7622-6 Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. ekologia Text 1172 Ympäristötiede 1181 Ekologia, evoluutiobiologia 11831 Kasvibiologia 1172 Miljövetenskap 1181 Ekologi, evolutionsbiologi 11831 Växtbiologi 1172 Environmental sciences 1181 Ecology, evolutionary biology 11831 Plant biology Doctoral dissertation (article-based) Artikkeliväitöskirja Artikelavhandling doctoralThesis 2021 ftunivhelsihelda 2023-07-28T06:12:58Z Anthropogenic climate change is one of the biggest threats to biodiversity and ecosystem functioning in high-latitude ecosystems. These regions are warming faster than the global mean, prompting changes in soil temperature, precipitation, and the onset and length of seasons. Species-level responses to these changes, rooted in temperature-dependent metabolic processes, will have consequences which permeate all levels of biological organisation and ecosystem functioning. Using a naturally occurring soil temperature gradient spanning 5–30 °C in the Hengill valley in Iceland, I set out to provide insight into long-term responses of species, communities, and soil processes to soil temperature. Epigeal plant and invertebrate communities were sampled in the summers of 2013, 2015, and 2017. In 2018, in addition to sampling aboveground communities, belowground communities and soil physiochemical properties were also examined. Chapter I sets out to examine the effect of soil temperature on populationand communitylevel epigeal invertebrate and plant communities. We recorded a significant decrease in the α-diversity of plants and invertebrates with increasing temperature, apparently driven by warming-induced decrease in plant species richness, and changes in the dominance hierarchy of the invertebrate community. Warm-adapted species replaced species with lower thermal optima in warm patches, leading to significant turnover in community structure with warming. Mean body size decreased with warming, and together with an overall increase in the abundance invertebrates at warmer patches, led to no effect of temperature on community biomass. Despite clear community-level trends in diversity and biomass indices, population-level effects were inconsistent, driven by differential thermal tolerances. However, these baseline trends were not consistent throughout the active season, as revealed in Chapter II. Seasonal fluctuations in invertebrate diversity indices were dampened by warming, while variation in biomass increased. ... Doctoral or Postdoctoral Thesis Iceland Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto Hengill ENVELOPE(-21.306,-21.306,64.078,64.078) |
institution |
Open Polar |
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Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
ekologia |
spellingShingle |
ekologia Robinson, Sinikka Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
topic_facet |
ekologia |
description |
Anthropogenic climate change is one of the biggest threats to biodiversity and ecosystem functioning in high-latitude ecosystems. These regions are warming faster than the global mean, prompting changes in soil temperature, precipitation, and the onset and length of seasons. Species-level responses to these changes, rooted in temperature-dependent metabolic processes, will have consequences which permeate all levels of biological organisation and ecosystem functioning. Using a naturally occurring soil temperature gradient spanning 5–30 °C in the Hengill valley in Iceland, I set out to provide insight into long-term responses of species, communities, and soil processes to soil temperature. Epigeal plant and invertebrate communities were sampled in the summers of 2013, 2015, and 2017. In 2018, in addition to sampling aboveground communities, belowground communities and soil physiochemical properties were also examined. Chapter I sets out to examine the effect of soil temperature on populationand communitylevel epigeal invertebrate and plant communities. We recorded a significant decrease in the α-diversity of plants and invertebrates with increasing temperature, apparently driven by warming-induced decrease in plant species richness, and changes in the dominance hierarchy of the invertebrate community. Warm-adapted species replaced species with lower thermal optima in warm patches, leading to significant turnover in community structure with warming. Mean body size decreased with warming, and together with an overall increase in the abundance invertebrates at warmer patches, led to no effect of temperature on community biomass. Despite clear community-level trends in diversity and biomass indices, population-level effects were inconsistent, driven by differential thermal tolerances. However, these baseline trends were not consistent throughout the active season, as revealed in Chapter II. Seasonal fluctuations in invertebrate diversity indices were dampened by warming, while variation in biomass increased. ... |
author2 |
Høye, Toke University of Helsinki, Faculty of Biological and Environmental Sciences Doctoral Programme in Wildlife Biology Helsingin yliopisto, bio- ja ympäristötieteellinen tiedekunta Luonnonvaraisten eliöiden tutkimuksen tohtoriohjelma Helsingfors universitet, bio- och miljövetenskapliga fakulteten Doktorandprogrammet i forskning om vilda organismer Mikola, Juha O'Gorman, Eoin |
format |
Doctoral or Postdoctoral Thesis |
author |
Robinson, Sinikka |
author_facet |
Robinson, Sinikka |
author_sort |
Robinson, Sinikka |
title |
Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
title_short |
Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
title_full |
Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
title_fullStr |
Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
title_full_unstemmed |
Impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
title_sort |
impacts of soil temperature on high-latitude terrestrial biodiversity and ecosystem functioning, and climate change implications |
publisher |
Helsingin yliopisto |
publishDate |
2021 |
url |
http://hdl.handle.net/10138/335446 |
long_lat |
ENVELOPE(-21.306,-21.306,64.078,64.078) |
geographic |
Hengill |
geographic_facet |
Hengill |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
URN:ISBN:978-951-51-7621-9 http://hdl.handle.net/10138/335446 URN:ISBN:978-951-51-7622-6 |
op_rights |
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. |
_version_ |
1774719206089031680 |