Understanding how physical-biological coupling influences harmful algal blooms, low oxygen and fish kills in the Sea of Oman and the Western Arabian Sea

Paul J. Harrison, Sergey Piontkovski, Khalid Al-Hashmi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In the last decade, green . Noctiluca scintillans with its symbiont and other dinoflagellates such as . Cochlodinium polykrikoides, . Prorocentrum micans and . Scrippsiella trochoidea have become the dominant HABs, partially replacing the previously dominant diatoms and red . Noctiluca scintillans, especially during the northeast monsoon. Fish kills in the Sea of Oman are linked to a slow seasonal decline in oxygen concentration from January to November, probably due to the decomposition of a series of algal blooms and the deep, low oxygen waters periodically impinging the Omani shelf. In the western Arabian Sea, cyclonic eddies upwell low oxygen, nutrient-rich water and the subsequent algal bloom decays and lowers the oxygen further and leads to fish kills. Warming of the surface waters by 1.2. °C over the last 5 decades has increased stratification and resulted in a shoaling of the oxycline. This has increased the probability and frequency of upwelling low oxygen water and subsequent fish kills.

Original languageEnglish
JournalMarine Pollution Bulletin
DOIs
Publication statusAccepted/In press - Aug 19 2016

Fingerprint

fish kills
Arabian Sea
Oman
algal blooms
Fish
algal bloom
oxygen
Oxygen
Water
Prorocentrum
Bacillariophyceae
symbiont
Surface waters
water
symbionts
dinoflagellate
Nutrients
eddy
surface water
upwelling

Keywords

  • Eddies
  • Fish kills
  • HABs
  • Hypoxia
  • Monsoons
  • Sea of Oman
  • Upwelling
  • Western Arabian Sea

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

Cite this

@article{8a9642f995604b4db9040be14563b149,
title = "Understanding how physical-biological coupling influences harmful algal blooms, low oxygen and fish kills in the Sea of Oman and the Western Arabian Sea",
abstract = "In the last decade, green . Noctiluca scintillans with its symbiont and other dinoflagellates such as . Cochlodinium polykrikoides, . Prorocentrum micans and . Scrippsiella trochoidea have become the dominant HABs, partially replacing the previously dominant diatoms and red . Noctiluca scintillans, especially during the northeast monsoon. Fish kills in the Sea of Oman are linked to a slow seasonal decline in oxygen concentration from January to November, probably due to the decomposition of a series of algal blooms and the deep, low oxygen waters periodically impinging the Omani shelf. In the western Arabian Sea, cyclonic eddies upwell low oxygen, nutrient-rich water and the subsequent algal bloom decays and lowers the oxygen further and leads to fish kills. Warming of the surface waters by 1.2. °C over the last 5 decades has increased stratification and resulted in a shoaling of the oxycline. This has increased the probability and frequency of upwelling low oxygen water and subsequent fish kills.",
keywords = "Eddies, Fish kills, HABs, Hypoxia, Monsoons, Sea of Oman, Upwelling, Western Arabian Sea",
author = "Harrison, {Paul J.} and Sergey Piontkovski and Khalid Al-Hashmi",
year = "2016",
month = "8",
day = "19",
doi = "10.1016/j.marpolbul.2016.11.008",
language = "English",
journal = "Marine Pollution Bulletin",
issn = "0025-326X",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Understanding how physical-biological coupling influences harmful algal blooms, low oxygen and fish kills in the Sea of Oman and the Western Arabian Sea

AU - Harrison, Paul J.

AU - Piontkovski, Sergey

AU - Al-Hashmi, Khalid

PY - 2016/8/19

Y1 - 2016/8/19

N2 - In the last decade, green . Noctiluca scintillans with its symbiont and other dinoflagellates such as . Cochlodinium polykrikoides, . Prorocentrum micans and . Scrippsiella trochoidea have become the dominant HABs, partially replacing the previously dominant diatoms and red . Noctiluca scintillans, especially during the northeast monsoon. Fish kills in the Sea of Oman are linked to a slow seasonal decline in oxygen concentration from January to November, probably due to the decomposition of a series of algal blooms and the deep, low oxygen waters periodically impinging the Omani shelf. In the western Arabian Sea, cyclonic eddies upwell low oxygen, nutrient-rich water and the subsequent algal bloom decays and lowers the oxygen further and leads to fish kills. Warming of the surface waters by 1.2. °C over the last 5 decades has increased stratification and resulted in a shoaling of the oxycline. This has increased the probability and frequency of upwelling low oxygen water and subsequent fish kills.

AB - In the last decade, green . Noctiluca scintillans with its symbiont and other dinoflagellates such as . Cochlodinium polykrikoides, . Prorocentrum micans and . Scrippsiella trochoidea have become the dominant HABs, partially replacing the previously dominant diatoms and red . Noctiluca scintillans, especially during the northeast monsoon. Fish kills in the Sea of Oman are linked to a slow seasonal decline in oxygen concentration from January to November, probably due to the decomposition of a series of algal blooms and the deep, low oxygen waters periodically impinging the Omani shelf. In the western Arabian Sea, cyclonic eddies upwell low oxygen, nutrient-rich water and the subsequent algal bloom decays and lowers the oxygen further and leads to fish kills. Warming of the surface waters by 1.2. °C over the last 5 decades has increased stratification and resulted in a shoaling of the oxycline. This has increased the probability and frequency of upwelling low oxygen water and subsequent fish kills.

KW - Eddies

KW - Fish kills

KW - HABs

KW - Hypoxia

KW - Monsoons

KW - Sea of Oman

KW - Upwelling

KW - Western Arabian Sea

UR - http://www.scopus.com/inward/record.url?scp=85006817900&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85006817900&partnerID=8YFLogxK

U2 - 10.1016/j.marpolbul.2016.11.008

DO - 10.1016/j.marpolbul.2016.11.008

M3 - Article

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

SN - 0025-326X

ER -