Mapping Seagrass from Space: Addressing the Complexity of Seagrass LAI Mapping

SECTION 4: SEAGRASS MAPPING AND LANDSCAPE ANALYSIS MONITORING DESIGN I. Mapping to Determine Seagrass Status and Trends The current standard methods for determination of seagrass status and trends

The current standard methods for determination of seagrass status and trends involve mapping from 1:24,000 scale true color, not color infrared, aerial photography (NOAA-CSC 2001). Analysis of this scale color photography for seagrass distribution has traditionally been performed by photointerpretation of 9” x 9” positive phototransparencies, followed by digitization of seagrass polygons from m...

Mapping seagrass in the Swan-Canning Estuary using sidescan sonar

Seagrass distribution and other measures of seagrass condition have been used as broad scale biological indicators of marine and estuarine health. To date the distribution of seagrass in the Swan-Canning Estuary has been assessed based on aerial photographs, which is ineffective in deep, turbid waters. Sidescan sonar systems (SSS) provide acceptable results in a much wider range of environmenta...

the effect of vocabulary instruction through semantic mapping on learning and recall of efl learners

چکیده ندارد.

The future of seagrass meadows

Seagrasses cover about 0.1–0.2% of the global ocean, and develop highly productive ecosystems which fulfil a key role in the coastal ecosystem. Widespread seagrass loss results from direct human impacts, including mechanical damage (by dredging, fishing, and anchoring), eutrophication, aquaculture, siltation, effects of coastal constructions, and food web alterations; and indirect human impacts...

Preliminary Evaluation of an Acoustic Technique for Mapping Tropical Seagrass Habitats