1. Improving forecasts of arctic-alpine refugia persistence with landscape-scale variables
- Author
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Miska Luoto, Annina Kaisa Johanna Niskanen, Risto K. Heikkinen, Henry Väre, Heidi K. Mod, Department of Geosciences and Geography, BioGeoClimate Modelling Lab, University of Helsinki, and Finnish Museum of Natural History
- Subjects
0106 biological sciences ,EUROPE ,010504 meteorology & atmospheric sciences ,Geography, Planning and Development ,Biodiversity ,Climate change ,010603 evolutionary biology ,01 natural sciences ,Latitude ,HABITAT MODELS ,refugia ,DISTRIBUTIONS ,GLACIAL REFUGIA ,1172 Environmental sciences ,0105 earth and related environmental sciences ,PLANT DIVERSITY ,CLIMATE-CHANGE ,Geology ,Edaphic ,SPECIES DISTRIBUTION MODELS ,15. Life on land ,IDENTIFYING REFUGIA ,13. Climate action ,Climatology ,landscape-scale factor ,Plant species ,PATTERNS ,Environmental science ,ta1181 ,BIODIVERSITY ,Physical geography ,Scale (map) ,Persistence (discontinuity) ,Arctic–alpine - Abstract
Refugia, the sites preserving conditions reminiscent of suitable climates, are projected to be crucial for species in a changing climate, particularly at high latitudes. However, the knowledge of current locations of high-latitude refugia and particularly their ability to retain suitable conditions under future climatic changes is limited. Occurrences of refugia have previously been mainly assessed and modelled based solely on climatic features, with insufficient attention being paid to potentially important landscape-scale factors. Here, climate-only models and full' models incorporating topo-edaphic landscape-scale variables (radiation, soil moisture and calcareousness) were developed and compared for 111 arctic-alpine plant species in Northern Fennoscandia. This was done for both current and future climates to determine cells with resilient climatic suitability harbouring refugia. Our results show that topographic and edaphic landscape-scale predictors both significantly improve models of arctic-alpine species distributions and alter projections of refugia occurrence. The predictions of species-climate models ignore landscape-scale ecological processes and may thus provide inaccurate estimates of extinction risk and forecasts of refugia where species can persist under a changing climate.
- Published
- 2017