caa a22 4500 606218866 CHVBK 20210128101115.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s11104-014-2378-0 doi (NATIONALLICENCE)springer-10.1007/s11104-014-2378-0 Influence of bark beetle outbreaks on nutrient cycling in native pine stands in western Canada [Elektronische Daten] [Paul Cigan, Justine Karst, James Cahill Jr., Alexandra Sywenky, Gregory Pec, Nadir Erbilgin] Aims: Using a natural gradient of recent (0-4years) mountain pine beetle (Dendroctonus ponderosae)-caused mortality in lodgepole pine (Pinus contorta) stands in west central Alberta, Canada, we tested the effects of different levels of tree mortality, and time since bark beetle infestation, on initial abiotic environmental changes, and nutrient inputs and cycling. Methods: We quantified the impacts of D. ponderosae outbreak on input rates of pine needle litter and nutrients, live root mass (both course and fine), supply rates of plant-available nutrients, and concentrations of total mineral soil phenols. Results: Pine needle litter, nutrient concentrations, and needle nutrient inputs are all increased as a function of either tree mortality or time since bark beetle infestation. Supply rates of many mineral nutrients increased in soils across gradients of mortality or time. Shallow fine root mass declined by half in response to beetle disturbance; concentrations of soil phenols also shrank by over half, potentially due to increased root losses. Soil phenolics were negatively associated with the supply rate of soil nitrate. Conclusion: We concluded that the effects of tree mortality on stand biogeochemistry in pine stands with no recorded history of mountain pine beetle is similar to earlier studies conducted in the beetle's historical range. Springer International Publishing Switzerland, 2015 Biogeochemistry nationallicence Litter chemistry nationallicence Soil phenolics nationallicence Mountain pine beetle nationallicence Insect outbreak nationallicence Cigan Paul Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut Karst Justine Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut Cahill Jr. James Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut Sywenky Alexandra Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut Pec Gregory Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut Erbilgin Nadir Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut Plant and Soil Springer International Publishing 390/1-2(2015-05-01), 29-47 0032-079X 390:1-2<29 2015 390 11104 https://doi.org/10.1007/s11104-014-2378-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-014-2378-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cigan Paul Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Karst Justine Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Cahill Jr James Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Sywenky Alexandra Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Pec Gregory Department of Biological Sciences, B717, Biological Sciences Building, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut NATIONALLICENCE 700 1- Erbilgin Nadir Department of Renewable Resources, 442 Earth Sciences Building, University of Alberta, T6G 2E3, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 390/1-2(2015-05-01), 29-47 0032-079X 390:1-2<29 2015 390 11104