Pekka Helle
Pekka Helle
erikoistutkija, Luonnonvarakeskus
Vahvistettu sähköpostiosoite verkkotunnuksessa luke.fi
NimikeViittauksetVuosi
Landscape fragmentation and forest composition effects on grouse breeding success in boreal forests
S Kurki, A Nikula, P Helle, H Lindén
Ecology 81 (7), 1985-1997, 2000
2822000
Abundances of red fox and pine marten in relation to the composition of boreal forest landscapes
S Kurki, ARI Nikula, P Helle, H Linden
Journal of animal ecology 67 (6), 874-886, 1998
2191998
Wildlife triangle scheme in Finland: methods and aims for monitoring wildlife populations
H Lindén
Finn Game Res 49, 4-11, 1996
1831996
Short-and long-term population dynamical consequences of asymmetric climate change in black grouse
GX Ludwig, RV Alatalo, P Helle, H Lindén, J Lindström, H Siitari
Proceedings of the Royal Society B: Biological Sciences 273 (1597), 2009-2016, 2006
1722006
Population trends of North Finnish land birds in relation to their habitat selection and changes in forest structure
P Helle, O Järvinen
Oikos, 107-115, 1986
1631986
Top predators, mesopredators and their prey: interference ecosystems along bioclimatic productivity gradients
B Elmhagen, G Ludwig, SP Rushton, P Helle, H Lindén
Journal of Animal Ecology 79 (4), 785-794, 2010
1412010
Invertebrate numbers in edges between clearfellings and mature forests in Northern Finland.
P Helle, J Muona
Suomen metsätieteellinen seura, 1985
1271985
Population genetic structure of male black grouse (Tetrao tetrix L.) in fragmented vs. continuous landscapes
A Caizergues, O Rätti, P Helle, L Rotelli, L Ellison, JY Rasplus
Molecular Ecology 12 (9), 2297-2305, 2003
1262003
Numerical and behavioural responses of migrant passerines to experimental manipulation of resident tits (Parus spp.): heterospecific attraction in northern …
M Mönkkönen, P Helle, K Soppela
Oecologia 85 (2), 218-225, 1990
1251990
Breeding success of black grouse and capercaillie in relation to mammalian predator densities on two spatial scales
S Kurki, P Helle, H Lindén, A Nikula
Oikos, 301-310, 1997
1241997
Ecological sustainability of birds in boreal forests
G Niemi, J Hanowski, P Helle, R Howe, M Mönkkönen, L Venier, D Welsh
Conservation Ecology 2 (2), 17, 1998
1181998
Forest successions and bird communities: theoretical aspects and practical implications
P Helle
Biogeography and ecology of forest bird communities, 1990
1031990
Heterospecific attraction and food resources in migrants' breeding patch selection in northern boreal forest
JT Forsman, M Mönkkönen, P Helle, J Inkeröinen
Oecologia 115 (1-2), 278-286, 1998
861998
Large-scale forest corridors to connect the taiga fauna to Fennoscandia
H Lindén, PI Danilov, AN Gromtsev, P Helle, EV Ivanter, J Kurhinen
Wildlife biology 6 (4), 179-189, 2000
842000
Mixed-species foraging aggregations and heterospecific attraction
M Mönkkönen, JT Forsman, P Helle
Oikos 77 (1), 1996
821996
Heterospecific attraction affects community structure and migrant abundances in northern breeding bird communities
M Mönkkönen, P Helle, GJ Niemi, K Montgomery
Canadian Journal of Zoology 75 (12), 2077-2083, 1997
811997
Sindbis virus infection in resident birds, migratory birds, and humans, Finland
S Kurkela, O Rätti, E Huhtamo, NY Uzcátegui, JP Nuorti, J Laakkonen, ...
Emerging infectious diseases 14 (1), 41, 2008
732008
Predator control and the density and reproductive success of grouse populations in Finland
K Kauhala, P Helle, E Helle
Ecography 23 (2), 161-168, 2000
712000
Effects of forest fragmentation on bird densities in northern boreal forests.
P Helle
Ornis Fennica 62 (2), 35-41, 1985
631985
Alarm calling by individual willow tits, Parus montanus
RV Alatalo, P Helle
Animal Behaviour 40 (3), 437-442, 1990
621990
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Artikkelit 1–20