picture of Jochen SchenkH. Jochen Schenk, Ph.D., U.C. Santa Babara

Associate Professor of Biology

Email: jschenk@fullerton.edu

Personal Web Site: http://biology.fullerton.edu/jschenk/

 

Research Interests:

Research in my "Plants & H2O" Lab at Cal State Fullerton, addresses many aspects of the interactions between plants and water and ranges in scope from plant physiology to the role of plants in the global water cycle. The current focus is on plant hydraulics – the structure and function of plant hydraulic systems – and specifically on how plants deal with air bubbles (embolisms) that can form in their water-conducting systems during drought stress or frost. Two aspects of embolism formation that are currently very active areas of research in my lab are mechanisms of embolism repair and the degree and nature of connectivity and redundancy in water-conducting systems, which can affect the movement of air and water within a plant and thereby affect embolism formation and repair. Other recent research has addressed the depths of plant root systems and their relationship to water availability, especially at the global scale, and competition for water between plants. Our research has implication for water conservation and irrigation needs of woody plants used for landscaping and as woody fruit and nut crops, and applied research in these areas is providing new directions for our lab.

Selected Publications

Espino, S., and H. J. Schenk. 2011. Mind the bubbles: Achieving stable measurements of maximum hydraulic conductivity through woody plant samples. Journal of Experimental Botany 62:1119-1132.

Martínez-Cabrera, H. I., H. J. Schenk, S. R. S. Cevallos-Ferriz, and C. S. Jones. 2011. Integration of vessel traits, wood density, and height in angiosperm shrubs and trees. American Journal of Botany 98:915-922.

Lambert, S. E., C. S. Jones, and H. J. Schenk. 2011. Distribution of axis-splitting in Mojave Desert shrub species along an elevational gradient. Journal of Arid Environments 75:106-111.

Schenk, H. J. and E. W. Seabloom. 2010. Evolutionary ecology of plant signals and toxins: a conceptual framework. pp. 1-19 in Ninkovic, V. and F. Baluška (eds.) Plant communication from an ecological perspective. Springer-Verlag, Berlin.

Martínez-Cabrera, H. I., C. S. Jones, S. Espino, and H. J. Schenk. 2009. Wood anatomy and wood density in shrubs: Responses to varying aridity along transcontinental transects. American Journal of Botany 96: 1388-1398.

Espino, S., and H. J. Schenk. 2009. Hydraulically integrated or modular?: Comparing whole-plant-level hydraulic systems between two desert shrub species with different growth forms. New Phytologist 183:142-152.

Schenk, H. J., S. Espino, C. M. Goedhart, M. Nordenstahl, H. I. Martinez-Cabrera, and C. S. Jones. 2008. Hydraulic integration and shrub growth form linked across continental aridity gradients. PNAS 105:11248–11253.

Schenk, H. J. 2008. The shallowest possible water extraction profile: A null model for global root distributions. Vadose Zone Journal 7:1119-1124.

Schenk, H. J. 2006. Essay Review: Root competition: beyond resource depletion. Journal of Ecology 94:725-739.

Schenk, H. J., and R. B. Jackson. 2005. Mapping the global distribution of deep roots in relation to climate and soil characteristics. Geoderma 126:129-140.

Schenk, H. J. 2005. Vertical vegetation structure below ground: Scaling from root to globe. Progress in Botany 66: 341-373.

Schenk, H. J. and R. B. Jackson. 2002. The global biogeography of roots. Ecological Monographs 72:311-328.

Schenk, H. J. and R. B. Jackson. 2002. Rooting depths, lateral root spreads, and belowground/aboveground allometries of plants in water limited ecosystems. Journal of Ecology 90:480-494.