Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study

Joseph J. Luczkovich, Thomas W. Wagner, Jeffrey L. Michalek, Richard W Stoffle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to monitor changes caused by local and global human actions to a coral reef ecosystem, we `sea-truthed' a natural color Landsat Thematic Mapper (TM) image prepared for a coastal region of the northwestern Dominican Republic and recorded average water depth, precise positions, and bottom types (seagrass n = 15 sites, coral reef n = 10 sites, and sand n = 6 sites). There were no significant differences in depth for the bottom type groups, which ranged from 0-16.1 m (0-52.7 ft). Sand > seagrass > coral in mean radiance for the three Landsat TM visible bands (TM 1, TM 2, TM 3); sand bottom sites had significantly greater radiance than seagrass and coral sites in TM 1 only. Mean radiance of seagrass and coral reef sites did not differ significantly in any band. A multivariate analysis of variance using all three bands gave similar results. A ratio of the green/blue bands (TM 2/TM 1) showed there was a spectral shift associated with increasing depth but not bottom type. Due to small-scale patchiness (<30 m×30 m), seagrass and coral areas were difficult to distinguish, but sandy areas can be mapped with this method.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages809-816
Number of pages8
Volume1930
Editionpt 2
StatePublished - 1992
Externally publishedYes
EventProceedings of the 1st Thematic Conference on Remote Sensing for Marine and Coastal Environments - New Orleans, LA, USA
Duration: Jun 15 1992Jun 17 1992

Other

OtherProceedings of the 1st Thematic Conference on Remote Sensing for Marine and Coastal Environments
CityNew Orleans, LA, USA
Period6/15/926/17/92

Fingerprint

Dominican Republic
coral reefs
thematic mappers (LANDSAT)
Reefs
sands
Sand
radiance
Analysis of variance (ANOVA)
Ecosystems
Color
reefs
analysis of variance
water depth
Water
ecosystems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Luczkovich, J. J., Wagner, T. W., Michalek, J. L., & Stoffle, R. W. (1992). Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study. In Proceedings of SPIE - The International Society for Optical Engineering (pt 2 ed., Vol. 1930, pp. 809-816). Publ by Int Soc for Optical Engineering.

Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study. / Luczkovich, Joseph J.; Wagner, Thomas W.; Michalek, Jeffrey L.; Stoffle, Richard W.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1930 pt 2. ed. Publ by Int Soc for Optical Engineering, 1992. p. 809-816.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Luczkovich, JJ, Wagner, TW, Michalek, JL & Stoffle, RW 1992, Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study. in Proceedings of SPIE - The International Society for Optical Engineering. pt 2 edn, vol. 1930, Publ by Int Soc for Optical Engineering, pp. 809-816, Proceedings of the 1st Thematic Conference on Remote Sensing for Marine and Coastal Environments, New Orleans, LA, USA, 6/15/92.
Luczkovich JJ, Wagner TW, Michalek JL, Stoffle RW. Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study. In Proceedings of SPIE - The International Society for Optical Engineering. pt 2 ed. Vol. 1930. Publ by Int Soc for Optical Engineering. 1992. p. 809-816
Luczkovich, Joseph J. ; Wagner, Thomas W. ; Michalek, Jeffrey L. ; Stoffle, Richard W. / Can seagrass meadows, coral reefs, and sand bottoms be mapped from space? A Dominican Republic case study. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1930 pt 2. ed. Publ by Int Soc for Optical Engineering, 1992. pp. 809-816
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