Coral reef benthic productivity based on optical absorptance and light-use efficiency

摘要: In the interest of determining productivity across a range spatial scales (meters to many kilometers) and in different reef environments, this paper proposes technique for measuring based on remote sensing optical absorptance light-use efficiency. The concept is straightforward: gross primary production equals plant-incident irradiance multiplied by plant plant’s efficiency (GPP = E d Ae). Both E d A are derivable from various data sources, thus approach feasible. This presents demonstration application Kaneohe Bay, Oahu, HI Quickbird satellite imagery SHOALS LIDAR data. modeled at every point image, image itself inverted provide A. Organismal-scale e reported literature taken as surrogate community-scale e. resulting GPP compares well with values reef-flats general, distribution Bay particular. Though results likely can be improved using spectral more accurate e, study demonstrates tractability coral GPP.