The Nature Conservancy 2 articles published in JoVE Environment Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration Phoebe D. Dawkins1, Andrea Paz-Lacavex2, Evan A. Fiorenza1, Makena A. Rush1, Rodrigo Beas-Luna3, Julio Lorda4, Luis Malpica-Cruz5, Jose M. Sandoval-Gil5, Tristin A. McHugh6, Min K. Han1, Matthew E. S. Bracken1, Joleah B. Lamb1 1Department of Ecology and Evolutionary Biology, University of California, Irvine, 2Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, 3Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, 4Facultad de Ciencias, Universidad Autónoma de Baja California, 5Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California, 6The Nature Conservancy This protocol describes the field collection and regular laboratory maintenance of substrates seeded with canopy-forming giant kelp for use in restoration trials to address the success and limitations of the 'green gravel' technique in field settings. Environment Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools Christian Denney1, Ryan Fields1, Mary Gleason2, Richard Starr1 1Moss Landing Marine Laboratories, 2The Nature Conservancy We describe a new method for counting fishes, and estimating relative abundance (MaxN) and fish density using rotating stereo-video camera systems. We also demonstrate how to use distance from camera (Z distance) to estimate species-specific detectability.
