Paul Grogan - Associate Professor

Research: I am an ecologist who is particularly interested in evaluating the physical, chemical and biological controls that regulate biogeochemical cycling in terrestrial ecosystems. Biogeochemistry addresses the links between biology and the flows of energy and nutrients on Earth, and so provides a central foundation on which to explore many questions in ecosystem ecology. My research questions tend to focus on plant-soil-microbial interactions that affect patterns and controls over carbon and nutrient cycling, and can link across organism, community and ecosystem levels within terrestrial ecology. I have conducted studies in arctic tundra, boreal forest, mediterranean pine forest, annual grassland and abandoned pasture ecosystems.

 Some Recent Publications: 

• Chu, H., Fierer, N., Lauber, C.L., Caporaso,  J.G., Knight, R. and Grogan, P. 2010. Soil bacterial diversity in the Arctic is not fundamentally different from that found in other biomes. Environmental Microbiology 12(11): 2998–3006.
• Foote, R. and Grogan, P. 2010. Soil Carbon Accumulation During Temperate Forest Succession on Abandoned Low Productivity Agricultural Lands. Ecosystems 13:795-812. 
• Buckeridge, K. M., Zufelt, E., Chu, H. and Grogan, P. 2010. Soil nitrogen cycling rates in low arctic shrub tundra are enhanced by litter feedbacks. Plant and Soil 330:407-421.
• Nobrega, S. and Grogan, P.  2008. Landscape and ecosystem-level controls on net carbon dioxide exchange along a natural moisture gradient in Canadian low arctic tundra. Ecosystems 11: 377-396
• Buckeridge, K. and Grogan, P.  2008. Deepened snow alters soil microbial nutrient limitations in arctic birch hummock tundra. Applied Soil Ecology 39(2): 210-222
• Grogan, P. and Jonasson, S. 2006. Ecosystem CO2 production during winter in a Swedish subarctic region: The relative importance of climate and vegetation type. Global Change Biology 12:1479-1495.
• Grogan, P. and Jonasson, S. 2005. Temperature and substrate controls on intra-annual variation in ecosystem respiration in two subarctic vegetation types. Global Change Biology 11:465-475.
• Grogan, P. 2005. The Use of Hypotheses in Ecology. Bulletin of the British Ecological Society 36(1):43-47.
• Grogan, P., Michelsen, A., Ambus, P. and Jonasson, S. 2004. Effects of differing freeze-thaw regimes on nutrient cycling and respiration in sub-arctic heath tundra. Soil Biology and Biochemistry 36(4): 641-654.
• Grogan, P. and Jonasson, S. 2003. Controls on annual nitrogen cycling in the understorey of a sub-arctic birch forest. Ecology 84(1): 202-218.