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

Abstract

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.

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

Published in 1994

Views 3353

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

Creative Commons License CC BY-SA 4.0

Register
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
Send to email
Schmitt U., Jalkanen R. et al. (2004) Cambium dynamics of Pinus sylvestris and Betula .. Silva Fennica vol. 38 no. 2 article id 426 (remove) | Edit comment
Ripatti P., (1996) Factors affecting partitioning of private forest.. Acta Forestalia Fennica vol. 0 no. 252 article id 7514 (remove) | Edit comment
Kallio T., (1972) An example on the economic loss caused by decay .. Silva Fennica vol. 6 no. 2 article id 4865 (remove) | Edit comment
Jansons Ā., Matisons R. et al. (2015) Effect of initial fertilization on 34-year incre.. Silva Fennica vol. 50 no. 1 article id 1346 (remove) | Edit comment
Doi R., Ranamukhaarachchi S. L. (2009) Community-level physiological profiling in monit.. Silva Fennica vol. 43 no. 5 article id 170 (remove) | Edit comment
Nyyssönen A., (1954) Structure and development of Scots pine stands t.. Acta Forestalia Fennica vol. 60 no. 4 article id 7411 (remove) | Edit comment
Mykkänen R., (1994) Aspiration-based utility functions in a planning.. Acta Forestalia Fennica vol. 0 no. 245 article id 7507 (remove) | Edit comment
Messier C., Puttonen P. (1993) Coniferous and non-coniferous fine-root and rhiz.. Silva Fennica vol. 27 no. 3 article id 5512 (remove) | Edit comment
Sterba H., (2004) Equilibrium curves and growth models to deal wit.. Silva Fennica vol. 38 no. 4 article id 409 (remove) | Edit comment
Vaario L.-M., Yrjälä K. et al. (2011) Leaf number indicates salt tolerance of young se.. Silva Fennica vol. 45 no. 1 article id 28 (remove) | Edit comment
Leskinen O., Vuorelainen O. (1957) A study on regional differences in economical us.. Silva Fennica vol. no. 93 article id 4671 (remove) | Edit comment
Väisänen R., Heliövaara K. (1994) Assessment of insect occurrence in boreal forest.. Acta Forestalia Fennica vol. 0 no. 243 article id 7505 (remove) | Edit comment
Your search results