Full text of this article is only available in PDF format.

Rauno Väisänen (email), Kari Heliövaara

Assessment of insect occurrence in boreal forests based on satellite imagery and field measurements

Väisänen R., Heliövaara K. (1994). Assessment of insect occurrence in boreal forests based on satellite imagery and field measurements. Acta Forestalia Fennica no. 243 article id 7505. https://doi.org/10.14214/aff.7505


The presence/absence data of 27 forest insect taxa (Retinia resinella, Formica spp., Pissodes spp., several scolytids) and recorded environmental variation were used to investigate the applicability of modelling insect occurrence based on satellite imagery. The sampling was based on 1,800 sample plots (25 m by 25 m) placed along the sides of 30 equilateral triangles (side 1 km) in a fragmented forest area (approximately 100 km2) in Evo, Southern Finland. The triangles were overlaid on land use maps interpreted from satellite images (Landsat TM 30 m multispectral scanner imagery 1991) and digitized geological maps. Insect occurrence was explained using either environmental variables measured in the field or those interpreted from the land use and geological maps. The fit of logistic regression models carried between species, possibly because some species may be associated with characteristics of single trees while other species with stand characteristics. The occurrence of certain insect species at least, especially those associated with Scots pine, could be relatively accurately assessed indirectly on the basis of satellite imagery and geological maps. Models based on both remotely sensed and geological data better predicted the distribution of forest insects except in the case of Xylechinus pilosus, Dryocetes sp. and Trypodendron lineatum, where the differences were relatively small in favour of the models based on field measurements. The number of species was related to habitat compartment size and distance from the habitat edge calculated from the land use maps, but logistic regressions suggested that other environmental variables in general masked the effect of these variables in species occurrence at the present scale.

biodiversity; remote sensing; insect pests; geological maps; Scolytids; logistic regression models

Published in 1994

Views 1645

Available at https://doi.org/10.14214/aff.7505 | Download PDF

Creative Commons License CC BY-SA 4.0

Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Jääskelä M., Heliövaara K. et al. (1997) Comparison of protection methods of pine stacks .. Silva Fennica vol. 31 no. 2 article id 5614
Peltonen M., Heliövaara K. et al. (1997) Forest insects and environmental variation in st.. Silva Fennica vol. 31 no. 2 article id 5613
Annila E., Heliövaara K. (1991) Chemical control of cone pests in a Norway spruc.. Silva Fennica vol. 25 no. 2 article id 5442
Heliövaara K., Löyttyniemi K. (1989) Effect of forest fertilization on pine needle-fe.. Silva Fennica vol. 23 no. 4 article id 5390
Heliövaara K., Väisänen R. (1989) Invertebrates of young Scots pine stands near th.. Silva Fennica vol. 23 no. 1 article id 5368
Heliövaara K., Väisänen R. (1989) Quantitative variation in the elemental composit.. Silva Fennica vol. 23 no. 1 article id 5367
Heliövaara K., Väisänen R. (1988) Interactions among herbivores in three polluted .. Silva Fennica vol. 22 no. 4 article id 5361
Heliövaara K., Väisänen R. (1986) Parasitization in Petrova resinella (Lepidoptera.. Silva Fennica vol. 20 no. 3 article id 5276
Heliövaara K., (1986) Occurrence of Petrova resinella (Lepidoptera, To.. Silva Fennica vol. 20 no. 2 article id 5264
Heliövaara K., Annila E. et al. (1983) Effect of nitrogen fertilization and insecticide.. Silva Fennica vol. 17 no. 4 article id 5197
Heliövaara K., (1982) The pine bark bug, Aradus cinnamomeus (Heteropte.. Silva Fennica vol. 16 no. 4 article id 5168
Väisänen R., Heliövaara K. (1994) Assessment of insect occurrence in boreal forest.. Acta Forestalia Fennica vol. 0 no. 243 article id 7505
Heliövaara K., Väisänen R. et al. (1991) Quantitative biogeography of the bark beetles (C.. Acta Forestalia Fennica vol. 0 no. 219 article id 7606
Heliövaara K., Väisänen R. (1984) Effects of modern forestry on Northwestern Europ.. Acta Forestalia Fennica vol. 0 no. 189 article id 7636
Nikula A., Nivala V. et al. (2019) Modelling the effect of habitat composition and .. Silva Fennica vol. 53 no. 1 article id 9918
Joensuu J., Heliövaara K. et al. (2008) Risk of bark beetle (Coleoptera, Scolytidae) dam.. Silva Fennica vol. 42 no. 2 article id 254