1. Joint Program in Biological Oceanography, Massachusetts Institute of Technology & Woods Hole Oceanographic Institution
2. Department of Biochemistry, Microbiology & Molecular Biology, University of Maine, Orono, Maine 04469
3. Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543
4. Departments of Civil and Environmental Engineering and of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139