Modelling the effect of habitat composition and roads on the occurrence and number of moose damage at multiple scales

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Nikula , A , Nivala , V , Matala , J & Heliövaara , K T 2019 , ' Modelling the effect of habitat composition and roads on the occurrence and number of moose damage at multiple scales ' , Silva Fennica , vol. 53 , no. 1 , 9918 . https://doi.org/10.14214/sf.9918

Title: Modelling the effect of habitat composition and roads on the occurrence and number of moose damage at multiple scales
Author: Nikula, Ari; Nivala, Vesa; Matala, Juho; Heliövaara, Kari Tapani
Contributor: University of Helsinki, Department of Forest Sciences
Date: 2019-01-10
Language: eng
Number of pages: 23
Belongs to series: Silva Fennica
ISSN: 0037-5330
URI: http://hdl.handle.net/10138/300682
Abstract: We modelled the effect of habitat composition and roads on the number and occurrence of moose (Alces alces L.) damage in Ostrobothnia and Lapland using a zero-inflated count model. Models were developed for 1 km2, 25 km2 and 100 km2 landscapes consisting of equilateral rectangular grid cells. Count models predict the number of damage, i.e. the number of plantations and zero models the probability of a landscape being without damage for a given habitat composition. The number of moose damage in neighboring grid cells was a significant predictor in all models. The proportion of mature forest was the most frequent significant variable, and an increasing admix-ture of mature forests among plantations increased the number and occurrence of damage. The amount of all types of plantations was the second most common significant variable predicting increasing damage along with increasing amount of plantations. An increase in thinning forests as an admixture also increased damage in 1 km2 landscapes in both areas, whereas an increase in pine-dominated thinning forests in Lapland reduced the number of damage in 25 km2 landscapes. An increasing amount of inhabited areas in Ostrobothnia and the length of connecting roads in Lapland reduced the number of damage in 1 and 25 km2 landscapes. Differences in model vari-ables between areas suggest that models of moose damage risk should be adjusted according to characteristics that are specific to the study area.
Subject: 1181 Ecology, evolutionary biology
Alces alces
forest damage
forest plantation
forestry
damage probability
habitat selection
habitat modelling
zero-inflated negative binomial distribution
ALCES-ALCES
FUNCTIONAL-RESPONSES
PINUS-SYLVESTRIS
SPATIAL SCALES
HOME-RANGE
SCOTS PINE
SELECTION
POPULATION
ABUNDANCE
DENSITY
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