Heljä-Sisko Helmisaari
Heljä-Sisko Helmisaari
Professor in Forest soil science
Verified email at helsinki.fi
Title
Cited by
Cited by
Year
Redefining fine roots improves understanding of below‐ground contributions to terrestrial biosphere processes
ML McCormack, IA Dickie, DM Eissenstat, TJ Fahey, CW Fernandez, ...
New Phytologist 207 (3), 505-518, 2015
4762015
Below-and above-ground biomass, production and nitrogen use in Scots pine stands in eastern Finland
HS Helmisaari, K Makkonen, S Kellomäki, E Valtonen, E Mälkönen
Forest ecology and management 165 (1-3), 317-326, 2002
3422002
Sustainable utilisation of forest biomass for energy—possibilities and problems: policy, legislation, certification, and recommendations and guidelines in the Nordic, Baltic …
I Stupak, A Asikainen, M Jonsell, E Karltun, A Lunnan, D Mizaraitė, ...
Biomass and Bioenergy 31 (10), 666-684, 2007
2682007
Fine root biomass in relation to site and stand characteristics in Norway spruce and Scots pine stands
HS Helmisaari, J Derome, P Nöjd, M Kukkola
Tree physiology 27 (10), 1493-1504, 2007
2552007
Logging residue removal after thinning in Nordic boreal forests: long-term impact on tree growth
HS Helmisaari, KH Hanssen, S Jacobson, M Kukkola, J Luiro, ...
Forest Ecology and Management 261 (11), 1919-1927, 2011
2042011
Variation in fine root biomass of three European tree species: Beech (Fagus sylvatica L.), Norway spruce (Picea abies L. Karst.), and Scots pine (Pinus sylvestris L.)
L Finér, HS Helmisaari, K Lõhmus, H Majdi, I Brunner, I Børja, T Eldhuset, ...
Plant Biosystems 141 (3), 394-405, 2007
1982007
Nutrient retranslocation within the foliage of Pinus sylvestris
HS Helmisaari
Tree physiology 10 (1), 45-58, 1992
1801992
Seasonal and yearly variations of fine-root biomass and necromass in a Scots pine (Pinus sylvestris L.) stand
K Makkonen, HS Helmisaari
Forest ecology and management 102 (2-3), 283-290, 1998
1661998
Fine root morphological adaptations in Scots pine, Norway spruce and silver birch along a latitudinal gradient in boreal forests
I Ostonen, K Lõhmus, HS Helmisaari, J Truu, S Meel
Tree Physiology 27 (11), 1627-1634, 2007
1512007
Fine-root turnover rates of European forests revisited: an analysis of data from sequential coring and ingrowth cores
I Brunner, MR Bakker, RG Björk, Y Hirano, M Lukac, X Aranda, I Børja, ...
Plant and Soil 362 (1-2), 357-372, 2013
1442013
Nutrient retranslocation in three Pinus sylvestris stands
HS Helmisaari
Forest Ecology and Management 51 (4), 347-367, 1992
1361992
Temporal variation in nutrient concentrations of Pinus sylvestris needles
HS Helmisaari
Scandinavian Journal of Forest Research 5 (1-4), 177-193, 1990
1351990
Nutrient cycling in Pinus sylvestris stands in eastern Finland
HS Helmisaari
Plant and Soil 168 (1), 327-336, 1995
1331995
Fine root biomass and production in Scots pine stands in relation to stand age
K Makkonen, HS Helmisaari
Tree physiology 21 (2-3), 193-198, 2001
1322001
Assessing fine-root biomass and production in a Scots pine stand–comparison of soil core and root ingrowth core methods
K Makkonen, HS Helmisaari
Plant and soil 210 (1), 43-50, 1999
1251999
Fine root foraging strategies in N orway spruce forests across a E uropean climate gradient
I Ostonen, HS Helmisaari, W Borken, L Tedersoo, M Kukumägi, M Bahram, ...
Global Change Biology 17 (12), 3620-3632, 2011
1202011
Element accumulation in boreal bryophytes, lichens and vascular plants exposed to heavy metal and sulfur deposition in Finland
M Salemaa, J Derome, HS Helmisaari, T Nieminen, I Vanha-Majamaa
Science of the Total Environment 324 (1-3), 141-160, 2004
1102004
Fine-root biomass and necromass in limed and fertilized Norway spruce (Picea abies (L.) Karst.) stands
HS Helmisaari, L Hallbäcken
Forest Ecology and Management 119 (1-3), 99-110, 1999
1061999
Models of litterfall production for Scots pine (Pinus sylvestris L.) in Finland using stand, site and climate factors
M Starr, A Saarsalmi, T Hokkanen, P Merilä, HS Helmisaari
Forest Ecology and Management 205 (1-3), 215-225, 2005
1032005
Acidity and nutrient content of throughfall and soil leachate in three Pinus sylvestris stands
HS Helmisaari, E Mälkönen
Scandinavian Journal of Forest Research 4 (1-4), 13-28, 1989
1011989
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