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Elena Valkama

Observed names: E. VALKAMA, E. Valkama, ELENA VALKAMA, Valkama Elena, Valkama, E., Valkama, Elena, Valkama, Elena (Proxy) (Contact)
ORCID: 0000-0002-8337-8070
Observed ORCID: 0000-0002-8337-8070
OpenAlex ID: A5076588261
Meta-analysis of the effects of undersown catch crops on nitrogen leaching loss and grain yields in the Nordic countries
2015 · Elena Valkama, Riitta Lemola, et al. · Agriculture Ecosystems & Environment · 223
Effects of elevated O3, alone and in combination with elevated CO2, on tree leaf chemistry and insect herbivore performance: a meta‐analysis
2006 · ELENA VALKAMA, JULIA KORICHEVA, et al. · Global Change Biology · 183
Phosphorus fertilization: A meta-analysis of 80 years of research in Finland
2009 · Elena Valkama, Risto Uusitalo, et al. · Agriculture Ecosystems & Environment · 147
Changes in Leaf Trichomes and Epicuticular Flavonoids during Leaf Development in Three Birch Taxa
2004 · E. VALKAMA · Annals of Botany · 144
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Can conservation agriculture increase soil carbon sequestration? A modelling approach
2020 · Elena Valkama, Gulya Kunypiyaeva, et al. · Geoderma · 127
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Comparative Analysis of Leaf Trichome Structure and Composition of Epicuticular Flavonoids in Finnish Birch Species
2003 · E. VALKAMA · Annals of Botany · 122
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A Meta‐Analysis on Nitrogen Retention by Buffer Zones
2018 · Elena Valkama, Kirsi Usva, et al. · Journal of Environmental Quality · 107
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Cropland soils in China have a large potential for carbon sequestration based on literature survey
2018 · Fulu Tao, Taru Palosuo, et al. · Soil and Tillage Research · 105
The combined effects of enhanced UV-B radiation and selenium on growth, chlorophyll fluorescence and ultrastructure in strawberry (Fragaria × ananassa) and barley (Hordeum vulgare) treated in the field
2003 · Elena Valkama, Minna Kivimäenpää, et al. · Agricultural and Forest Meteorology · 101
The impact of reed management on wildlife: A meta-analytical review of European studies
2008 · Elena Valkama, Sami Lyytinen, et al. · Biological Conservation · 98
New pedotransfer approaches to predict soil bulk density using WoSIS soil data and environmental covariates in Mediterranean agro-ecosystems
2021 · Calogero Schillaci, Alessia Perego, et al. · The Science of The Total Environment · 82
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Leaf surface traits: overlooked determinants of birch resistance to herbivores and foliar micro-fungi?
2004 · Elena Valkama, Julia Koricheva, et al. · Trees · 79
Nitrogen balances and yields of spring cereals as affected by nitrogen fertilization in northern conditions: A meta-analysis
2012 · Elena Valkama, Tapio Salo, et al. · Agriculture Ecosystems & Environment · 73
Yield response models to phosphorus application: a research synthesis of Finnish field trials to optimize fertilizer P use of cereals
2011 · Elena Valkama, Risto Uusitalo, et al. · Nutrient Cycling in Agroecosystems · 58
Additive and non‐additive effects of birch genotypic diversity on arthropod herbivory in a long‐term field experiment
2014 · Kasey E. Barton, Elena Valkama, et al. · Oikos · 55
Cover crops affect pool specific soil organic carbon in cropland – A meta‐analysis
2024 · Julia Fohrafellner, Katharina M. Keiblinger, et al. · European Journal of Soil Science · 49
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Defensive Effect of Surface Flavonoid Aglycones of Betula pubescens Leaves Against First Instar Epirrita autumnata Larvae
2004 · Maria Lahtinen, Juha-Pekka Salminen, et al. · Journal of Chemical Ecology · 48
Quality assessment of meta-analyses on soil organic carbon
2023 · Julia Fohrafellner, Sophie Zechmeister-Boltenstern, et al. · SOIL · 47
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Trade‐offs and synergies of soil carbon sequestration: Addressing knowledge gaps related to soil management strategies
2024 · Peter Maenhout, Claudia Di Bene, et al. · European Journal of Soil Science · 44
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Computation of total soil organic carbon stock and its standard deviation from layered soils
2022 · Tommaso Tadiello, Alessia Perego, et al. · MethodsX · 44
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Delayed induced responses of birch glandular trichomes and leaf surface lipophilic compounds to mechanical defoliation and simulated winter browsing
2005 · Elena Valkama, Julia Koricheva, et al. · Oecologia · 38
Nitrogen fertilization of grass leys: Yield production and risk of N leaching
2016 · Elena Valkama, Katri Rankinen, et al. · Agriculture Ecosystems & Environment · 37
Soil organic carbon under conservation agriculture in Mediterranean and humid subtropical climates: Global meta‐analysis
2022 · Tommaso Tadiello, Marco Acutis, et al. · European Journal of Soil Science · 34
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Effectiveness of soil management strategies for mitigation of N 2 O emissions in European arable land: A meta‐analysis
2024 · Elena Valkama, Domna Tzemi, et al. · European Journal of Soil Science · 32
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EX-TRACT: An excel tool for the estimation of standard deviations from published articles
2021 · Marco Acutis, Tommaso Tadiello, et al. · Environmental Modelling & Software · 31
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Works count: 111
Citation count: 2,255
H-index: 26
I10-index: 30
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