Title

Spatial and Temporal Dynamics of Arabian Gulf Coral Assemblages Quantified from Remote-Sensing and in situ Monitoring Data

Document Type

Article

Publication Date

2-18-2005

Publication Title

Marine Ecology Progress Series

Keywords

Mass mortality, Disturbance, Remote-sensing, Monitoring, Spatial pattern, Coral reef, Arabian Gulf

ISSN

0171-8630

Volume

287

First Page

99

Last Page

113

Abstract

We analysed spatial patterns of coral communities mapped from IKONOS satellite imagery in combination with 8 yr of traditional ecological monitoring data and archived sea-surface temperature data to explain why coral assemblages in the SE Arabian Gulf (Jebel Ali, Dubai) are impoverished and most do not build reefal frameworks. Analysis of archive sea-surface temperature (SST) data confirmed that the area is subject to recurrent and cyclic temperature anomalies at a frequency which suggests at least a partial link to the El Niño Southern Oscillation via the Indian Ocean Zonal Mode. Classification of high-resolution (4 m pixel-size) IKONOS satellite data gave a large-scale synoptic overview of substrate zonation which, in tandem with a long-term ecological time-series study, allowed us to determine the spatial and temporal dynamics of the coral community. We show that the spatial expression of 4 coral assemblages, as mapped using the IKONOS imagery, is consistent with what would be predicted if reef development was repeatedly ‘reset’ on a decadal time-scale following recurring episodes of coral mass mortality induced by severe SST anomalies. Furthermore, merging the remotely-sensed map of substrate distribution with a detailed bathymetric digital elevation model, revealed no evidence of any significant framework development in the past, suggesting that the cycle of temperature-induced mortality has been operating for some considerable time.

Comments

©Inter-Research 2005

Additional Comments

NOAA grant #: NA16OA1443; Austrian Science Foundation grant #: P13165-GEO

ORCID ID

0000-0002-6003-9324

ResearcherID

B-8552-2013; F-8807-2011

DOI

10.3354/meps287099

Peer Reviewed

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