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Akademický článek

Insect herbivory dampens Subarctic birch forest C sink response to warming

Autor: Tarja Silfver, Lauri Heiskanen, Mika Aurela, Kristiina Myller, Kristiina Karhu, Nele Meyer, Juha-Pekka Tuovinen, Elina Oksanen, Matti Rousi, Juha Mikola

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)

Warming is expected to increase C sink capacity in high-latitude ecosystems, but plant-herbivore interactions could moderate or offset this effect. Here, Silfver and colleagues test individual and interactive effects of warming and insect herbivory i

Externí odkaz: https://doaj.org/article/1728434e63264a9baac674d144800eb6

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Akademický článek

Strong Interactive Effects of Warming and Insect Herbivory on Soil Carbon and Nitrogen Dynamics at Subarctic Tree Line

Autor: Nele Meyer, Tarja Silfver, Kristiina Karhu, Kristiina Myller, Outi-Maaria Sietiö, Eero Myrsky, Elina Oksanen, Matti Rousi, Juha Mikola

Publikováno v: Frontiers in Forests and Global Change, Vol 4 (2021)

Warming will likely stimulate Arctic primary production, but also soil C and N mineralization, and it remains uncertain whether the Arctic will become a sink or a source for CO2. Increasing insect herbivory may also dampen the positive response of pl

Externí odkaz: https://doaj.org/article/1226f23042b2453fa0e0224503fc1ca8

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Akademický článek

Effects of experimental warming on Betula nana epidermal cell growth tested over its maximum climatological growth range.

Autor: Fabian E Z Ercan, Juha Mikola, Tarja Silfver, Kristiina Myller, Elina Vainio, Sandra Słowińska, Michał Słowiński, Mariusz Lamentowicz, Daan Blok, Friederike Wagner-Cremer

Publikováno v: PLoS ONE, Vol 16, Iss 5, p e0251625 (2021)

Numerous long-term, free-air plant growth facilities currently explore vegetation responses to the ongoing climate change in northern latitudes. Open top chamber (OTC) experiments as well as the experimental set-ups with active warming focus on many

Externí odkaz: https://doaj.org/article/6835b782f09e4b269670db692ea59ac8

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Akademický článek

Intrapopulation Genotypic Variation of Foliar Secondary Chemistry during Leaf Senescence and Litter Decomposition in Silver Birch (Betula pendula)

Autor: Ulla Paaso, Sarita Keski-Saari, Markku Keinänen, Heini Karvinen, Tarja Silfver, Matti Rousi, Juha Mikola

Publikováno v: Frontiers in Plant Science, Vol 8 (2017)

Abundant secondary metabolites, such as condensed tannins, and their interpopulation genotypic variation can remain through plant leaf senescence and affect litter decomposition. Whether the intrapopulation genotypic variation of a more diverse assor

Externí odkaz: https://doaj.org/article/1b8713556e9e472e8d6e7df6b9bc6fd8

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Akademický článek

Genotype × herbivore effect on leaf litter decomposition in Betula Pendula saplings: ecological and evolutionary consequences and the role of secondary metabolites.

Autor: Tarja Silfver, Ulla Paaso, Mira Rasehorn, Matti Rousi, Juha Mikola

Publikováno v: PLoS ONE, Vol 10, Iss 1, p e0116806 (2015)

Plant genetic variation and herbivores can both influence ecosystem functioning by affecting the quantity and quality of leaf litter. Few studies have, however, investigated the effects of herbivore load on litter decomposition at plant genotype leve

Externí odkaz: https://doaj.org/article/deefd8dc96f749a8848d166f6e82b386

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Akademický článek

Spatial variation and seasonal dynamics of leaf-area index in the arctic tundra-implications for linking ground observations and satellite images

Autor: Sari Juutinen, Tarmo Virtanen, Vladimir Kondratyev, Tuomas Laurila, Maiju Linkosalmi, Juha Mikola, Johanna Nyman, Aleksi Räsänen, Juha-Pekka Tuovinen, Mika Aurela

Publikováno v: Environmental Research Letters, Vol 12, Iss 9, p 095002 (2017)

Vegetation in the arctic tundra typically consists of a small-scale mosaic of plant communities, with species differing in growth forms, seasonality, and biogeochemical properties. Characterization of this variation is essential for understanding and

Externí odkaz: https://doaj.org/article/214c06fd14f24be3b81e57adbd3f3911

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Variation in CO2 and CH4 fluxes among land cover types in heterogeneous Arctic tundra in northeastern Siberia

Autor: Sari Juutinen, Mika Aurela, Juha-Pekka Tuovinen, Viktor Ivakhov, Maiju Linkosalmi, Aleksi Räsänen, Tarmo Virtanen, Juha Mikola, Johanna Nyman, Emmi Vähä, Marina Loskutova, Alexander Makshtas, Tuomas Laurila

Publikováno v: Biogeosciences. 19:3151-3167

Arctic tundra is facing unprecedented warming, resulting in shifts in the vegetation, thaw regimes, and potentially in the ecosystem-atmosphere exchange of carbon (C). However, the estimates of regional carbon dioxide (CO2) and methane (CH4) budgets

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678a6520764a3365798ad11da204c734
https://doi.org/10.5194/bg-19-3151-2022

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Soil organic matter, rather than temperature, determines the structure and functioning of subarctic decomposer communities

Autor: Juha Mikola, Marleena Hagner, Eoin O'Gorman, Sinikka Robinson, Beat Frey

Publikováno v: Global Change Biology. 28:3929-3943

The impacts of climate change on ecosystem structure and functioning are likely to be strongest at high latitudes due to the adaptation of biota to relatively low temperatures and nutrient levels. Soil warming is widely predicted to alter microbial,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8247d6d8cb6acdf9fa79e4b855ac1987
https://doi.org/10.1111/gcb.16158

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