Publications

Kahng et al. 2012


scientific_article | Proc 12th Int Coral Reef Symp

Temperature related depth limits of warm-water corals

Kahng SE, Wagner D, Lantz C, Vetter O, Gove J, Merrifield M



Abstract

While biogeographical limits of tropical fauna have been studied with increasing latitude, little is known about their lower depth distributions. For non - photosynthetic, warm - water fauna, decreasing temperature with increasing depth eventually limits their depth distribution. However, the nature of this lower thermal threshold, which has habitat management implications, has not been studied to date. In the Au’au Channel, Hawai’i, the temperature regime along a depth gradient near previously identified lower depths limits for warm - water azooxanthellate corals was characterized to determine whether the lower depths limits were consistent with acute stress causing colony mortality or chronic stress inhibiting growth, rep roduction, and/or larval settlement. Data suggests that lower depth limits are associated with a minimum required exposure (e.g., 5 - 7 months) to water >22°C. This lower depth limit appears to be decoupled from the lower temperature limits of colony survival.

Research sites

Kahng 2012a
Keywords
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Meta-data
Depth range
90- 150 m

Mesophotic “relevance”
13x mentions

Word count
2533 words

Fields
Ecology Community structure Oceanography

Research focus
Scleractinia (Hard Corals)

Locations
Hawaii

Research platforms
Manned Submersible
Author profiles
Sam Kahng ( 15 pubs)
Daniel Wagner ( 18 pubs)
Research sites (dec deg)
Hawaii
Au'au Channel
Lat: 20.95 Long: -156.766