The Omani shelf hypoxia and the warming Arabian Sea

S. A. Piontkovski, H. S. Al-Oufi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Interdecadal changes in oxygen depletion, with a special reference to artisanal landings of large pelagic fishes, were analysed. Data from 53 expeditions incorporating 29,043 vertical profiles of temperature and 2114 of dissolved oxygen implied an increase in temperature of 1.2 °C over the past 50 years in the upper 30 m layer of sea water during the south-west (summer) monsoon. The thermal stratification of the water column increased and the oxycline shoaled from 153 m in the 1960s to 80 m in the 2000s. Concentration of dissolved oxygen −1 is known to induce symptoms of stress for many tropical pelagic fishes, compressing them within upper layers and exposing them to fishery. The habitat compression by the Oman shelf hypoxia has two components: a seasonal oxycline shoaling and an interdecadal trend.

Original languageEnglish
Pages (from-to)256-264
Number of pages9
JournalInternational Journal of Environmental Studies
Volume72
Issue number2
DOIs
Publication statusPublished - Mar 4 2015

Fingerprint

pelagic fish
hypoxia
Fish
warming
Thermal stratification
water
Oman
Fisheries
Dissolved oxygen
fishery
vertical profile
habitat
Water
dissolved oxygen
monsoon
stratification
water column
temperature
compression
seawater

Keywords

  • Arabian Sea
  • Fish landings
  • Hypoxia
  • Oxycline

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Pollution
  • Computers in Earth Sciences
  • Geography, Planning and Development
  • Ecology

Cite this

The Omani shelf hypoxia and the warming Arabian Sea. / Piontkovski, S. A.; Al-Oufi, H. S.

In: International Journal of Environmental Studies, Vol. 72, No. 2, 04.03.2015, p. 256-264.

Research output: Contribution to journalArticle

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