UConn HomeBanner
Avery Point Schools & Colleges Sea Grant NURC LISRC LIS Web Cam Contact US
  


Heidi M. Dierssen
University of Connecticut
Department of Marine Sciences
1080 Shennecossett Road
Groton, CT 06340
voice: (860) 405-9239
    fax: (860) 405-9153

e-mail: heidi.dierssen@uconn.edu
web: http://colors.uconn.edu
Dr. Dierssen leads the Coastal Ocean Laboratory for Optics and Remote Sensing at the University of Connecticut (www.colors.uconn.edu). Our current projects involve optics and remote sensing of the coastal zone ranging from Long Island Sound to Florida Bay. We are developing algorithms to use remotely sensing imagery to quantify phytoplankton and CDOM in optically complex waters and benthic habitats in optically shallow waters. We are also involved in theoretical and laboratory experiments involving backscattering and particle size distributions. Our laboratory has a variety of equipment for measuring optical and physical properties of the water column that can be loaned out to interested students or investigators.

The products obtained from ocean color satellites are focused on unicellular phytoplankton in the world's deep oceans and have yet to map seafloor habitats in shallow water. I am involved in several projects to exploit satellite ocean color imagery in shallow ecosystems.

I am currently funded to develop and test optical approaches for estimating seagrass in two very different carbonate shelf environments:
1) Oligotrophic waters of the Bahamas Banks with little anthropogenic influences
2) Eutrophic waters of Florida Bay experiencing high degree of anthropogenic disturbance
The abundance and distribution of seagrass resources across these environments will be linked to managing and preserving coastal marine resources is a formidable challenge given the rapid pace of change affecting coastal environments. Fast, accurate and quantitative tools are needed for detecting change in coastal ecosystems. Traditional in situ surveys are time and labor-intensive, generally lack the spatial resolution and precision required to detect subtle changes before they become catastrophic, and can be difficult to maintain from year-to-year. I am involved in several instrument development proposals for using Unmanned Aerial Vehicles (UAVs) to obtain high resolution optical imagery of the nearshore coastal zone. UAVs can fly underneath cloud cover to provide unprecedented spatial and temporal imagery of the coastal zone.

Some Representative Publications



Seibel, B.A., and H.M. Dierssen. 2003. Tip of the iceberg: Cascading trophic impacts of B-15A in the Ross Sea, Antarctica. Biol. Bulletin. 2025: 93-97.

Dierssen, H.M., R.C. Zimmerman, R.A. Leathers, T.V. Downes, and C.O. Davis. 2003. Ocean color remote sensing of seagrass and bathymetry in the Bahamas Banks by high resolution airborne imagery. Limnology and Oceanography. 48 (1, part 2): 456-463. (http://aslo.org/lo/toc/vol_48/issue_1_part_2/)

Dierssen, H.M., R.C. Smith, and M. Vernet. 2002. Glacial meltwater dynamics in coastal waters west of the Antarctic Peninsula. Proc. National Academy of Science. 99(4):1790-1795.

Smith, R.C., K. Baker, H.M. Dierssen, S. Stammerjohn, M. Vernet. 2001. Variability of primary production in an Antarctic marine ecosystem as estimated using a multi-scale sampling strategy. American Zoologist. 41:40-56

Dierssen, H., and R. C. Smith. 2000. Bio-Optical properties and remote sensing ocean color algorithms for Antarctic Peninsula Waters. Journal of Geophysical Research. 105(C11): 26301-26312.

Dierssen, H. M., M. Vernet, and R. C. Smith. 2000. Optimizing models for remotely estimating primary production in Antarctic coastal waters. Antarctic Science. 12:20-32.

Dierssen, H.M., and R.C. Smith. Case 2 Antarctic coastal waters: the bio-optical properties of surface meltwater, in Proc. Ocean Optics XV [CDROM], edited by S. Ackleson and J. Marra, Off. of Nav. Res., Ocean, Atmos., and Space S&T Dept., 2000.

Dierssen, H. 2000. Ocean color remote sensing of chlorophyll and primary production west of the Antarctic Peninsula. PhD Thesis, University of California, Santa Barbara, Santa Barbara, CA.

Dierssen, H.M., and R.C. Smith, Estimation of irradiance just below the air-water interface, in Proceedings Ocean Optics XIII, edited by S. Ackleson and R. Frouin, Proc. SPIE Int. Soc. for Opt. Eng., 2963, 204-209, 1996.

Smith, R. C., Dierssen, H. M., and Vernet, M., 1996, Phytoplankton biomass and productivity in the Western Antarctic Peninsula Region. Ross, R. M., Hofmann, E. E., and Quetin, L. B., ed., Foundations for Ecosystem Research West of the Antarctic Peninsula: AGU Antarctic Research Series.


Previous Page 

      
A-Z INDEX         MAPS & DIRECTIONS        TEXT-ONLY

FACULTY LOGIN        DEPARTMENT LOGIN
Marine Sciences
1080 Shennecossett Road
Groton, CT 06340
P: (860)405-9152      F: (860)405-9153
marinesciences@uconn.edu
Disclaimers & Copyright Statements