Conservation in space
Species distributions are highly spatially structured owing to three primary reasons. First, the spatial structure in environmental factors is passed to species distributions. Second, species respond to their environments in a hierarchical manner – at the spatial scales rising from species ecology. Third, ecological processes themselves are affected by space as the interactions between organisms are, to a high degree, limited by distance. Explicit consideration of space as an important underlying force affecting ecological processes and patterns does not only provide new theoretical and empirical knowledge but offers tools for conservation planning that targets for the long-term persistence of biodiversity. In this thesis, I have examined two current conservation issues from a spatial perspective and at the landscape level. First, I studied the role of woodland key habitats as an additional part of the traditional protected area network. My results showed that dispersal ability of species is linked with the potential conservation merits of woodland key habitats. The protected habitat area served as a misleading measure for the amount of protected habitat actually available to species at the landscape level. Second, I studied the habitat associations of the Siberian Jay (Perisoreus infaustus) in boreal forest landscapes by using spatially explicit species distribution modeling (SDM) methods with a multi-scale approach. My results showed that the species distribution is affected by the landscape context, and is most probably shaped by the intrinsic aggregation rising from species behavior. The comparisons of various spatial methods indicated that their conceptual underpinnings are passed on to the results they are producing, which emphasizes the role of understanding theoretical assumptions and the intricacies of spatial effects when interpreting spatial results. My results add to the accumulated scientific evidence for the notable role of space affecting species living in fragmented landscapes, and emphasize the importance of spatial considerations in conservation planning. ...
- Artikkeli I: Laita, A., Mönkkönen, M. & Kotiaho, J.S. 2010. Woodland key habitats evaluated as part of a functional reserve network. Biological Conservation 143: 1212-1227. DOI: 10.1016/j.biocon.2010.02.029
- Artikkeli II: Laita, A., Kotiaho, J. S., & Mönkkönen, M. (2011). Graph-theoretic connectivity measures: what do they tell us about connectivity?. Landscape Ecology, 26 (7), 951-967. DOI: 10.1007/s10980-011-9620-4
- Artikkeli III: Laita, A. & Mönkkönen, M. 2011. Space, scales and imperfect detection: modeling the habitat association of the Siberian Jay (Perisoreus infaustus) in boreal forest landscapes. Submitted manuscript.
- Artikkeli IV: Laita, A. & Mönkkönen, M. 2011. Accounting for space in species distribution modeling – alternative routes leading to a same destination? Manuscript.
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Timonen, Jonna (University of Jyväskylä, 2011)
Do small protected habitat patches within boreal production forests provide value for biodiversity conservation? : A systematic review protocol Häkkilä, Matti; Savilaakso, Sini; Johansson, Anna; Sandgren, Terhi; Uusitalo, Anne; Mönkkönen, Mikko; Puttonen, Pasi (BioMed Central Ltd., 2019)Background Forest harvesting is the main driver of habitat degradation and biodiversity loss in forests of the boreal zone. To mitigate harmful effects, small-scale habitats with high biodiversity values have been protected ...
Are small protected habitat patches within boreal production forests effective in conserving species richness, abundance and community composition? : a systematic review Häkkilä, Matti; Johansson, Anna; Sandgren, Terhi; Uusitalo, Anne; Mönkkönen, Mikko; Puttonen, Pasi; Savilaakso, Sini (BioMed Central, 2021)Background: In boreal zone forest management is changing and degrading forest habitats, which has caused declines in biodiversity. To mitigate these harmful effects in production forests, small-scale habitats with high ...
Connection between temperature, larval production, virulence and geographical distribution of Rhipidocotyle parasites infecting the duck mussel, Anodonta anatina Choo, Jocelyn M. (University of Jyväskylä, 2015)In this thesis, two bucephalid trematode parasites Rhipidocotyle campanula and R. fennica, which use the same first (Anodonta anatina) and second intermediate (Rutilus rutilus) host were studied. The aim was to investigate ...
Densities of Atlantic salmon (Salmo salar L.) fry in relation to physical habitat, spawning redd distribution and parr abundance in a small subarctic river Nerg, Sami (2014)Two small-scale surveys were conducted in a small river to examine the effects of physical habitat characteristics, spatial spawning redd distribution and abundance of older juveniles on the Atlantic salmon (Salmo salar ...