H.-S. Helmisaari: search on Z-Library

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1

Fine root longevity and below- and aboveground litter production in a boreal Betula pendula forest

Ding, Yiyang, Leppälammi-Kujansuu, Jaana, Helmisaari, Heljä-Sisko

Journal:

Forest Ecology and Management

Year:

2018

Language:

english

File:

PDF, 804 KB

english, 2018

2

Acidity and nutrient content of throughfall and soil leachate in three Pinus sylvestris stands

Helmisaari, Helja-Sisko, Malkonen, Eino

Journal:

Scandinavian Journal of Forest Research

Year:

1989

Language:

english

File:

PDF, 863 KB

english, 1989

3

Fine root biomass and production in Scots pine stands in relation to stand age

Makkonen, K., Helmisaari, H.-S.

Journal:

Tree Physiology

Year:

2001

Language:

english

File:

PDF, 616 KB

english, 2001

4

Remediation of Heavy Metal–Contaminated Forest Soil Using Recycled Organic Matter and Native Woody Plants

Helmisaari, H.-S., Salemaa, M., Derome, J., Kiikkilä, O., Uhlig, C., Nieminen, T. M.

Journal:

Journal of Environmental Quality

Year:

2007

Language:

english

File:

PDF, 362 KB

english, 2007

5

Long-term effects on the nitrogen budget of a short-rotation grey alder (Alnus incana (L.) Moench) forest on abandoned agricultural land

Veiko Uri, Krista Lõhmus, Ülo Mander, Ivika Ostonen, Jürgen Aosaar, Martin Maddison, Heljä-Sisko Helmisaari, Jürgen Augustin

Journal:

Ecological Engineering

Year:

2011

Language:

english

File:

PDF, 428 KB

english, 2011

6

Long term effects of whole tree harvesting on soil carbon and nutrient sustainability in the UK

Elena Vanguelova, Rona Pitman, Jukka Luiro, Heljä-Sisko Helmisaari

Journal:

Biogeochemistry

Year:

2010

Language:

english

File:

PDF, 870 KB

english, 2010

7

Bacterial community structure and its relationship to soil physico-chemical characteristics in alder stands with different management histories

Preem, Jens-Konrad, Truu, Jaak, Truu, Marika, Mander, Ülo, Oopkaup, Kristjan, Lõhmus, Krista, Helmisaari, Heljä-Sisko, Uri, Veiko, Zobel, Martin

Journal:

Ecological Engineering

Year:

2012

Language:

english

File:

PDF, 506 KB

english, 2012

8

Variation of soil respiration and its components in hemiboreal Norway spruce stands of different ages

Kukumägi, Mai, Ostonen, Ivika, Uri, Veiko, Helmisaari, Heljä-Sisko, Kanal, Arno, Kull, Olevi, Lõhmus, Krista

Journal:

Year:

2017

Language:

english

File:

PDF, 840 KB

english, 2017

9

Seven Recommendations to Make Your Invasive Alien Species Data More Useful

Groom, Quentin J., Adriaens, Tim, Desmet, Peter, Simpson, Annie, De Wever, Aaike, Bazos, Ioannis, Cardoso, Ana Cristina, Charles, Lucinda, Christopoulou, Anastasia, Gazda, Anna, Helmisaari, Harry, Hob

Journal:

Frontiers in Applied Mathematics and Statistics

Year:

2017

Language:

english

File:

PDF, 407 KB

english, 2017

10

Root growth dynamics of three beech ( Fagus sylvatica L.) provenances

Železnik, Peter, Westergren, Marjana, Božič, Gregor, Eler, Klemen, Bajc, Marko, Helmisaari, Heljä-Sisko, Horvath, Aniko, Kraigher, Hojka

Journal:

Forest Ecology and Management

Year:

2018

Language:

english

File:

PDF, 459 KB

english, 2018

11

Accumulation of elements in the annual rings of Scots pine trees in the vicinity of a copper-nickel smelter measured by scanning EDXRF

C. Larsson, H. S. Helmisaari

Journal:

X-Ray Spectrometry

Year:

1998

Language:

english

File:

PDF, 341 KB

english, 1998

12

Multi-element analysis of fine roots of Scots pine by total reflection x-ray fluorescence spectrometry

Marie Olsson, Arturs Viksna, Heljä-Sisko Helmisaari

Journal:

X-Ray Spectrometry

Year:

1999

Language:

english

File:

PDF, 54 KB

english, 1999

13

Survival of black alder (Alnus glutinosa L.), silver birch (Betula pendula Roth.) and Scots pine (Pinus sylvestris L.) seedlings in a reclaimed oil shale mining area

Tatjana Kuznetsova, Katrin Rosenvald, Ivika Ostonen, Heljä-Sisko Helmisaari, Malle Mandre, Krista Lõhmus

Journal:

Ecological Engineering

Year:

2010

Language:

english

File:

PDF, 302 KB

english, 2010

14

The influence of elevated CO2 and O3 on fine roots and mycorrhizas of naturally growing young Scots pine trees during three exposure years

AnnE. Kasurinen, Heljä-Sisko Helmisaari, Toini Holopainen

Journal:

Global Change Biology

Year:

1999

Language:

english

File:

PDF, 452 KB

english, 1999

15

Nutrient cycling inPinus sylvestrisstands in eastern Finland

Heljä-Sisko Helmisaari

Journal:

Year:

1995

Language:

english

File:

PDF, 795 KB

english, 1995

16

Copper in Scots pine forests around a heavy-metal smelter in south-western Finland

H.-S. Helmisaari, J. Derome, H. Fritze, T. Nieminen, K. Palmgren, M. Salemaa, I. Vanha-Majamaa

Journal:

Water, Air & Soil Pollution

Year:

1995

Language:

english

File:

PDF, 383 KB

english, 1995

17

Biomass allocation, needle structural characteristics and nutrient composition in Scots pine seedlings exposed to elevated CO2and O3concentrations

Jarkko Utriainen, Sari Janhunen, Heljä-Sisko Helmisaari, Toini Holopainen

Journal:

Year:

2000

Language:

english

File:

PDF, 200 KB

english, 2000

18

Does the age of fine root carbon indicate the age of fine roots in boreal forests?

S. P. Sah, H. Jungner, M. Oinonen, M. Kukkola, H.-S. Helmisaari

Journal:

Biogeochemistry

Year:

2011

Language:

english

File:

PDF, 388 KB

english, 2011

19

Effects of wood ash and nitrogen fertilization on fine root biomass and soil and foliage nutrients in a Norway spruce stand in Finland

Heljä-Sisko Helmisaari, Anna Saarsalmi, Mikko Kukkola

Journal:

Year:

2009

Language:

english

File:

PDF, 290 KB

english, 2009

20

Belowground interspecific competition in mixed boreal forests: fine root and ectomycorrhiza characteristics along stand developmental stage and soil fertility gradients

Tuomo Kalliokoski, Taina Pennanen, Pekka Nygren, Risto Sievänen, Heljä-Sisko Helmisaari

Journal:

Year:

2010

Language:

english

File:

PDF, 309 KB

english, 2010

21

Fine root foraging strategies in Norway spruce forests across a European climate gradient

Ivika Ostonen, Heljä-Sisko Helmisaari, Werner Borken, Leho Tedersoo, Mai Kukumägi, Mohammad Bahram, Antti-Jussi Lindroos, Pekka Nöjd, Veiko Uri, Päivi Merilä, Endla Asi, Krista Lõhmus

Journal:

Global Change Biology

Year:

2011

Language:

english

File:

PDF, 252 KB

english, 2011

22

Optimal co-allocation of carbon and nitrogen in a forest stand at steady state

Annikki Mäkelä, Harry T. Valentine, Heljä-Sisko Helmisaari

Journal:

New Phytologist

Year:

2008

Language:

english

File:

PDF, 278 KB

english, 2008

23

Fine-root growth, mortality and heavy metal concentrations in limed and fertilized Pinus silvestris (L.) stands in the vicinity of a Cu-Ni smelter in SW Finland

Heljä-Sisko Helmisaari, Kirsi Makkonen, Marie Olsson, Arturs Viksna, Eino Mälkönen

Journal:

Year:

1999

Language:

english

File:

PDF, 119 KB

english, 1999

24

Assessing fine-root biomass and production in a Scots pine stand – comparison of soil core and root ingrowth core methods

Kirsi Makkonen, Heljä-Sisko Helmisaari

Journal:

Year:

1999

Language:

english

File:

PDF, 205 KB

english, 1999

25

Compensatory fertilization of Scots pine stands polluted by heavy metals

Eino Mälkönen, John Derome, Hannu Fritze, Heljä-Sisko Helmisaari, Mikko Kukkola, Anna Saarsalmi, Maija Salemaa

Journal:

Nutrient Cycling in Agroecosystems

Year:

1999

Language:

english

File:

PDF, 721 KB

english, 1999

26

The Effect of Lake-Water Infiltration on the Acidity and Base Cation Status of Forest Soil

Antti-Jussi Lindroos, John Derome, Laura Paavolainen, Heljä-Sisko Helmisaari

Journal:

Water, Air & Soil Pollution

Year:

2001

Language:

english

File:

PDF, 250 KB

english, 2001

27

Does soil nutrient availability influence night-time water flux of aspen saplings?

Priit Kupper, Gristin Rohula, Liina Saksing, Arne Sellin, Krista Lõhmus, Ivika Ostonen, Heljä-Sisko Helmisaari, Anu Sõber

Journal:

Environmental and Experimental Botany

Year:

2012

Language:

english

File:

PDF, 522 KB

english, 2012

28

Element accumulation in boreal bryophytes, lichens and vascular plants exposed to heavy metal and sulfur deposition in Finland

Maija Salemaa, John Derome, Heljä-Sisko Helmisaari, Tiina Nieminen, Ilkka Vanha-Majamaa

Journal:

Science of The Total Environment

Year:

2004

Language:

english

File:

PDF, 829 KB

english, 2004

29

Artificial recharge of groundwater through sprinkling infiltration: Impacts on forest soil and the nutrient status and growth of Scots pine

Pekka Nöjd, Antti-Jussi Lindroos, Aino Smolander, John Derome, Ilari Lumme, Heljä-Sisko Helmisaari

Journal:

Science of The Total Environment

Year:

2009

Language:

english

File:

PDF, 971 KB

english, 2009

30

Models of litterfall production for Scots pine (Pinus sylvestris L.) in Finland using stand, site and climate factors

Michael Starr, Anna Saarsalmi, Tatu Hokkanen, Päivi Merilä, Heljä-Sisko Helmisaari

Journal:

Forest Ecology and Management

Year:

2005

Language:

english

File:

PDF, 211 KB

english, 2005

31

Logging residue removal after thinning in Nordic boreal forests: Long-term impact on tree growth

Heljä-Sisko Helmisaari, Kjersti Holt Hanssen, Staffan Jacobson, Mikko Kukkola, Jukka Luiro, Anna Saarsalmi, Pekka Tamminen, Bjørn Tveite

Journal:

Forest Ecology and Management

Year:

2011

Language:

english

File:

PDF, 411 KB

english, 2011

32

Effects of logging residue harvest in thinnings on amounts of soil carbon and nutrients in Scots pine and Norway spruce stands

Pekka Tamminen, Anna Saarsalmi, Aino Smolander, Mikko Kukkola, Heljä-Sisko Helmisaari

Journal:

Forest Ecology and Management

Year:

2012

Language:

english

File:

PDF, 270 KB

english, 2012

33

Heterotrophic respiration and nitrogen mineralisation in soils of Norway spruce, Scots pine and silver birch stands in contrasting climates

Bengt A. Olsson, Karna Hansson, Tryggve Persson, Egbert Beuker, Heljä-Sisko Helmisaari

Journal:

Forest Ecology and Management

Year:

2012

Language:

english

File:

PDF, 537 KB

english, 2012

34

Changes in dissolved organic carbon during artificial recharge of groundwater in a forested esker in Southern Finland

Antti-Jussi Lindroos, Veikko Kitunen, John Derome, Heljä-Sisko Helmisaari

Journal:

Year:

2002

Language:

english

File:

PDF, 265 KB

english, 2002

35

Decomposition of coniferous forest litter along a heavy metal pollution gradient, south-west Finland

N.A McEnroe, H.-S Helmisaari

Journal:

Environmental Pollution

Year:

2001

Language:

english

File:

PDF, 358 KB

english, 2001

36

Changes in nitrogen transformations in forest soil as a result of sprinkling infiltration

Antti-Jussi Lindroos, Laura Paavolainen, Aino Smolander, John Derome, Heljä-Sisko Helmisaari

Journal:

Environmental Pollution

Year:

1998

Language:

english

File:

PDF, 656 KB

english, 1998

37

Interactions between precipitation and Scots pine canopies along a heavy-metal pollution gradient

T.M. Nieminen, J. Derome, H.-S. Helmisaari

Journal:

Environmental Pollution

Year:

1999

Language:

english

File:

PDF, 228 KB

english, 1999

38

Below- and above-ground biomass, production and nitrogen use in Scots pine stands in eastern Finland

Heljä-Sisko Helmisaari, Kirsi Makkonen, Seppo Kellomäki, Esko Valtonen, Eino Mälkönen

Journal:

Forest Ecology and Management

Year:

2002

Language:

english

File:

PDF, 191 KB

english, 2002

39

Seasonal and yearly variations of fine-root biomass and necromass in a Scots pine (Pinus sylvestris L.) stand

Kirsi Makkonen, Heljä-Sisko Helmisaari

Journal:

Forest Ecology and Management

Year:

1998

Language:

english

File:

PDF, 233 KB

english, 1998

40

Fine-root biomass and necromass in limed and fertilized Norway spruce (Picea abies (L.) Karst.) stands

Heljä-Sisko Helmisaari, Leif Hallbäcken

Journal:

Forest Ecology and Management

Year:

1999

Language:

english

File:

PDF, 453 KB

english, 1999

41

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.)

Finér, L., Helmisaari, H.-S., Lõhmus, K., Majdi, H., Brunner, I., Børja, I., Eldhuset, T., Godbold, D., Grebenc, T., Konôpka, B., Kraigher, H., Möttönen, M.-R., Ohashi, M., Oleksyn, J., Ostonen, I., U

Journal:

Plant Biosystems / An International Journal Dealing with all Aspects of Plant Biology

Year:

2007

Language:

english

File:

PDF, 557 KB

english, 2007

42

Fine root morphological adaptations in Scots pine, Norway spruce and silver birch along a latitudinal gradient in boreal forests

Ostonen, I., Lohmus, K., Helmisaari, H.-S., Truu, J., Meel, S.

Journal:

Tree Physiology

Year:

2007

Language:

english

File:

PDF, 99 KB

english, 2007

43

Variation in nutrient concentrations of Pinus sylvestris stems

Helmisaari, Helja-Sisko, Siltala, Tapio

Journal:

Scandinavian Journal of Forest Research

Year:

1989

Language:

english

File:

PDF, 509 KB

english, 1989

44

Temporal variation in nutrient concentrations of Pinus sylvestris needles

Helmisaari, Heljä‐Sisko

Journal:

Scandinavian Journal of Forest Research

Year:

1990

Language:

english

File:

PDF, 860 KB

english, 1990

45

Impacts of forest post thinning residues on soil chemistry, fauna and roots: Implications of residue removal in Finland

Dighton, J., Helmisaari, H.-S., Maghirang, M., Smith, S., Malcolm, K., Johnson, W., Quast, L., Lallier, B., Gray, D., Setälä, H., Starr, M., Luiro, J., Kukkola, M.

Journal:

Applied Soil Ecology

Year:

2012

Language:

english

File:

PDF, 1.08 MB

english, 2012

46

Corrigendum to IMPACTS OF FOREST POST THINNING RESIDUES ON SOIL CHEMISTRY, FAUNA AND ROOTS: IMPLICATIONS OF RESIDUE REMOVAL IN FINLAND Applied Soil Ecology [60C (2012) 16-22]

Dighton, J., Helmisaari, H.-S., Maghirang, M., Smith, S., Malcolm, K., Johnson, W., Quast, L., Lallier, B., Gray, D., Setälä, H., Starr, M., Luiro, J., Kukkola, M.

Journal:

Applied Soil Ecology

Year:

2012

Language:

english

File:

PDF, 85 KB

english, 2012

47

Above- and below-ground N stocks in coniferous boreal forests in Finland: Implications for sustainability of more intensive biomass utilization

Merilä, Päivi, Mustajärvi, Kaisa, Helmisaari, Heljä-Sisko, Hilli, Sari, Lindroos, Antti-Jussi, Nieminen, Tiina M., Nöjd, Pekka, Rautio, Pasi, Salemaa, Maija, Ukonmaanaho, Liisa

Journal:

Forest Ecology and Management

Year:

2014

Language:

english

File:

PDF, 819 KB

english, 2014

48

Fine root turnover and litter production of Norway spruce in a long-term temperature and nutrient manipulation experiment

Leppälammi-Kujansuu, Jaana, Salemaa, Maija, Kleja, Dan Berggren, Linder, Sune, Helmisaari, Heljä-Sisko

Journal:

Year:

2014

Language:

english

File:

PDF, 782 KB

english, 2014

49

Silvics of north European trees: Compilation, comparisons and implications for forest succession modelling

Colin Prentice, I., Helmisaari, Harry

Journal:

Forest Ecology and Management

Year:

1991

Language:

english

File:

PDF, 851 KB

english, 1991

50

Carbon and nitrogen pools and fluxes above and below ground in spruce, pine and birch stands in southern Sweden

Hansson, Karna, Fröberg, Mats, Helmisaari, Heljä-Sisko, Kleja, Dan B., Olsson, Bengt A., Olsson, Mats, Persson, Tryggve

Journal:

Forest Ecology and Management

Year:

2013

Language:

english

File:

PDF, 848 KB

english, 2013