Holden Laboratory

Our Current Projects

Urban Water Environment (UWE) is about cities, where, worldwide, human populations are concentrated.  Cities employ, house, sustain, entertain, educate, and transport people.  In cities, there are no real boundaries between “natural” and built...
Engineered nanomaterials are now mainstream, i.e. used in consumer, industrial, and commercial products.  Still, there is limited understanding of how synthetic nanomaterials perform upon release into the environment.  Microoganisms substantially...
In our vadose zone microbial ecologyresearch, we work in collaboration with Josh Schimel's lab in EEMB (http://www.lifesci.ucsb.edu/eemb/faculty/schimel/) to study controls on microbial community composition, diversity, and process in surface and...
In coastal urban settings, what are the occurrences of pathogen-containing fecal material in freshwaters that discharge into coastal oceans, and what are the origins?  Worldwide, human activities related to development result in periodically high...
Sedgwick Reserve soil at 15 cm depth
Sedgwick Reserve soil at 15 cm depth, imaged using ESEM in MEIAF (http://www.bren.ucsb.edu/facilities/meiaf/ )
Marina Feraud and Laurie Van De Werfhorst sampling offshore for water quality research.