|SS1.10 Marine Protected Areas: Critical tools for Marine Biodiversity Conservation|
|Date: Monday, June 10, 2002|
|Time: 4:45:00 PM|
|Blakeway, D, , California State University, Los Angeles, USA, firstname.lastname@example.org|
|Robles, C, D, California State University, Los Angeles, USA, email@example.com|
|Fuentes, D, , California State University, Los Angeles, USA, firstname.lastname@example.org|
|Qiu, H, L, California State University, Los Angeles, USA, email@example.com|
|SEHRI: SPATIALLY EXTENSIVE HIGH RESOLUTION IMAGES OF ROCKY INTERTIDAL COMMUNITIES|
|We present a method for acquiring spatially extensive (>> 100 m2) high resolution (< 1 cm) images of the cover of rocky shore communities. A hand-held pole with a 35 mm camera atop takes overlapping pictures from normal or oblique angles. Using recently developed desktop software, digital renderings of the photographs are assembled into a nearly seamless composite image. We illustrate the utility of this image by (1) combining it with other sources of data into a layered GIS database, (2) analyzing the scales of patchiness of different species using semivariograms, and (3) georectifying earlier panoramic photos with the SERHI to make historical comparisons.
We suggest that SEHRI are appropriate when the aim is to (1) archive detailed records of the community composition of a location (2) make post hoc analyses of the community, or (3) compare spatial patterns at different scales. Conducting environmental impact assessments and validating spatially explicit population models share these goals.