A new method for jointly assessing effects of climate change and nitrogen deposition on habitats

摘要: Abstract Climate change and nitrogen (N) deposition are among the most important drivers of biodiversity at a global scale. Although commonly considered separately in applied research, conservation, policy development, both empirical evidence modelling studies indicate that these two stressors may act synergistically trigger more pronounced loss than each them alone. Interactive effects thus need to be conservation. In this study, we propose new method for jointly assessing risk from habitats by combining climate envelope evaluation exceedance critical loads eutrophication through N deposition. Based on approach can calculate combined metric, which is scaled load climatic thresholds three-dimensional space deposition, temperature, water limitation. We use habitat map project metric 34 EUNIS types across Austria. Resulting maps indicated about 16 % area natural semi-natural currently either exceedance, drought or warming. Using combinations future (RCP2.5 RCP8.5) (business as usual, current legislation maximum feasible reduction) scenarios, predict might increase up 19% until 2050, with N-deposition decreasing increasing. Combined impacts affect only 2% entire evaluated area, but much frequent particular such oligotrophic bogs subalpine alpine grasslands. conclude provides useful screening procedure identify compare areas under support prioritization decision making