EcoService Models Library (ESML)

Document: Relating landscape development intensity to coral reef condition in the watersheds of St. Croix, US Virgin Islands (Doc-96)

96
Authors
Oliver, L. M., Lehrter, J. C. and Fisher, W. S.
Year
2011
Title
Relating landscape development intensity to coral reef condition in the watersheds of St. Croix, US Virgin Islands
Document Type
Journal Article
Journal
Marine Ecology Progress Series
Volume
427
Pages
293-302
Abstract
Land-based sources of pollution are a major threat to the health of coral reefs. We report, for the first time, a study that relates coral reef condition to human modifications of the landscape. Stony coral community richness, cover, colony size, and density were assessed along with 3-dimensional coral cover in the near-shore waters of St. Croix, US Virgin Islands, in 2006 and 2007. Land use/land cover data (LULC, 2.4 m resolution) and a landscape development intensity (LDI) index, an indicator of human activity calculated from the LULC data, were used to explore relationships with coral indicators. The LDI index was more robust than other indicators of human activity, exhibiting negative correlations with stony coral colony density, taxa richness, colony size, and total coral cover. High variability observed in coral density and taxa richness was better explained when percent natural land and average coral station depth were considered along with the LDI index. Percent impervious surface in the watershed was negatively correlated with 1 coral condition indicator, total coral cover. The LDI index is an effective landscape indicator of human impact on St. Croix corals, highlighting the link between land-based human activity and marine ecosystems. Further development of this tool will aid in land use planning and prioritization of conservation efforts.
EMs citing this document as a source
EM-194 | EM-260
EMs citing this document for a related EM
?
None
EMs citing this document for a compared EM
?
None