Al-Hashmi, Khalid A,Smith, Sharon L,Claereboudt, Michel,Piontkovski, Sergey A,Al-Azri, Adnan
Dynamics of potentially harmful phytoplankton in a semi-enclosed bay in the Sea of Oman Journal Article
In: Bulletin of Marine Science, vol. 91, no. 276, pp. 141-166, 2015, ISBN: 0007-4977.
Abstract | BibTeX | Tags: Harmful Algal Bloom, mortality, Oman, Sea of Oman
@article{,
title = {Dynamics of potentially harmful phytoplankton in a semi-enclosed bay in the Sea of Oman},
author = {Al-Hashmi, Khalid A,Smith, Sharon L,Claereboudt, Michel,Piontkovski, Sergey A,Al-Azri, Adnan},
issn = {0007-4977},
year = {2015},
date = {2015-01-01},
journal = {Bulletin of Marine Science},
volume = {91},
number = {276},
pages = {141-166},
abstract = {The dynamics of potentially harmful
phytoplankton in relation to environmental parameters was
investigated in the semi-enclosed Bay of Bandar Khayran (Sea
of Oman) from April 2006 through April 2011. In total, 24
potentially harmful algal species were identified, including
11 species of dinoflagellates and eight species of diatoms. The
dinoflagellates Prorocentrum minimum (Pavillard) Schiller,
1933, Scrippsiella trochoidea Balech ex Loeblich III, 1965,
and Noctiluca scintillans (Macartney) Kofoid and Swezy,
1921 were most abundant during the Southwest Monsoon
(SWM, July–September) and Northeast Monsoon (NEM,
January–March) seasons, while other species occurred in
low abundance and with no clear seasonal patterns. A dense
bloom of Cochlodinium polykrikoides Margalef, 1961 that
affected the distribution and abundance of other harmful
algal species (HAB) was observed for the first time in the Sea of
Oman during 2008–2009. Prorocentrum minimum increased
in abundance during and after the decay of the Cochlodinium
bloom while S. trochoidea was suppressed during this bloom,
increasing thereafter once again. Noctiluca scintillans
disappeared in the late SWM and NEM of 2008 and SWM of
2009, when blooms typically occur annually. Prorocentrum
minimum and S. trochoidea persisted throughout the annual
cycle of all years, enhancing their capability to bloom in the
region under favorable conditions of high light intensities
and relatively warm waters of low turbulence.},
keywords = {Harmful Algal Bloom, mortality, Oman, Sea of Oman},
pubstate = {published},
tppubtype = {article}
}
The dynamics of potentially harmful
phytoplankton in relation to environmental parameters was
investigated in the semi-enclosed Bay of Bandar Khayran (Sea
of Oman) from April 2006 through April 2011. In total, 24
potentially harmful algal species were identified, including
11 species of dinoflagellates and eight species of diatoms. The
dinoflagellates Prorocentrum minimum (Pavillard) Schiller,
1933, Scrippsiella trochoidea Balech ex Loeblich III, 1965,
and Noctiluca scintillans (Macartney) Kofoid and Swezy,
1921 were most abundant during the Southwest Monsoon
(SWM, July–September) and Northeast Monsoon (NEM,
January–March) seasons, while other species occurred in
low abundance and with no clear seasonal patterns. A dense
bloom of Cochlodinium polykrikoides Margalef, 1961 that
affected the distribution and abundance of other harmful
algal species (HAB) was observed for the first time in the Sea of
Oman during 2008–2009. Prorocentrum minimum increased
in abundance during and after the decay of the Cochlodinium
bloom while S. trochoidea was suppressed during this bloom,
increasing thereafter once again. Noctiluca scintillans
disappeared in the late SWM and NEM of 2008 and SWM of
2009, when blooms typically occur annually. Prorocentrum
minimum and S. trochoidea persisted throughout the annual
cycle of all years, enhancing their capability to bloom in the
region under favorable conditions of high light intensities
and relatively warm waters of low turbulence.
phytoplankton in relation to environmental parameters was
investigated in the semi-enclosed Bay of Bandar Khayran (Sea
of Oman) from April 2006 through April 2011. In total, 24
potentially harmful algal species were identified, including
11 species of dinoflagellates and eight species of diatoms. The
dinoflagellates Prorocentrum minimum (Pavillard) Schiller,
1933, Scrippsiella trochoidea Balech ex Loeblich III, 1965,
and Noctiluca scintillans (Macartney) Kofoid and Swezy,
1921 were most abundant during the Southwest Monsoon
(SWM, July–September) and Northeast Monsoon (NEM,
January–March) seasons, while other species occurred in
low abundance and with no clear seasonal patterns. A dense
bloom of Cochlodinium polykrikoides Margalef, 1961 that
affected the distribution and abundance of other harmful
algal species (HAB) was observed for the first time in the Sea of
Oman during 2008–2009. Prorocentrum minimum increased
in abundance during and after the decay of the Cochlodinium
bloom while S. trochoidea was suppressed during this bloom,
increasing thereafter once again. Noctiluca scintillans
disappeared in the late SWM and NEM of 2008 and SWM of
2009, when blooms typically occur annually. Prorocentrum
minimum and S. trochoidea persisted throughout the annual
cycle of all years, enhancing their capability to bloom in the
region under favorable conditions of high light intensities
and relatively warm waters of low turbulence.
Piontkovski, SA,Al-Gheilani, HMH,Jupp, B,Sarma, YVB,Al-Azri, AR
The relationship between algal blooms, fish kill incidents, and oxygen depletions along the Omani coast Journal Article
In: International Journal of Oceans and Oceanography, vol. 6, no. 429, pp. 145-177, 2012, ISBN: 0973-2667.
Abstract | BibTeX | Tags: Arabian Sea, fish kill, Gulf of Oman, Harmful Algal Bloom, mass mortality, oxygen minimum, Sea of Oman, seasonal change, Sultanate of Oman
@article{,
title = {The relationship between algal blooms, fish kill incidents, and oxygen depletions along the Omani coast},
author = {Piontkovski, SA,Al-Gheilani, HMH,Jupp, B,Sarma, YVB,Al-Azri, AR},
issn = {0973-2667},
year = {2012},
date = {2012-01-01},
journal = {International Journal of Oceans and Oceanography},
volume = {6},
number = {429},
pages = {145-177},
abstract = {A persistence of hypoxia is a common feature for the Sea of Oman, and the
western Arabian Sea. By using historical data complemented by ongoing
measurements, the relationship between the frequency of harmful algal
blooms, fish kill incidents, and oxygen depletions, was investigated. In the Sea
of Oman, the seasonal pattern exhibited a tendency of fish kill incidents to
increase, from January to November. In the western Arabian Sea, the pattern
was different- maximal occurrence of fish kill incidences was observed in
December and January. In 1988-2011, the number of harmful algal blooms
accompanied by fish kills was 4 times higher for the Sea of Oman (N= 91)
compared to the Arabian Sea coast (N= 22), whereas the total number of fish
kill incidents was about the same (22 versus 25). This means that the Arabian
Sea coast faced more frequent harmful blooms than the Sea of Oman. The Sea
of Oman coastal time series of the dissolved oxygen concentration implied a
steady decline throughout the year, from January to December. The fish kill
incidents in this region were mainly driven by oxygen depletions, whereas in
the Arabian Sea these incidents were mediated by the harmful algal blooms
along with the oxygen depletions. In analyzing the Omani coast as a whole,
the Ridge Multiple Regression Analysis implied the dissolved oxygen
concentration and monthly occurrence of algal blooms as the two variables
explaining 75% of the seasonal variations in fish kill incidents.},
keywords = {Arabian Sea, fish kill, Gulf of Oman, Harmful Algal Bloom, mass mortality, oxygen minimum, Sea of Oman, seasonal change, Sultanate of Oman},
pubstate = {published},
tppubtype = {article}
}
A persistence of hypoxia is a common feature for the Sea of Oman, and the
western Arabian Sea. By using historical data complemented by ongoing
measurements, the relationship between the frequency of harmful algal
blooms, fish kill incidents, and oxygen depletions, was investigated. In the Sea
of Oman, the seasonal pattern exhibited a tendency of fish kill incidents to
increase, from January to November. In the western Arabian Sea, the pattern
was different- maximal occurrence of fish kill incidences was observed in
December and January. In 1988-2011, the number of harmful algal blooms
accompanied by fish kills was 4 times higher for the Sea of Oman (N= 91)
compared to the Arabian Sea coast (N= 22), whereas the total number of fish
kill incidents was about the same (22 versus 25). This means that the Arabian
Sea coast faced more frequent harmful blooms than the Sea of Oman. The Sea
of Oman coastal time series of the dissolved oxygen concentration implied a
steady decline throughout the year, from January to December. The fish kill
incidents in this region were mainly driven by oxygen depletions, whereas in
the Arabian Sea these incidents were mediated by the harmful algal blooms
along with the oxygen depletions. In analyzing the Omani coast as a whole,
the Ridge Multiple Regression Analysis implied the dissolved oxygen
concentration and monthly occurrence of algal blooms as the two variables
explaining 75% of the seasonal variations in fish kill incidents.
western Arabian Sea. By using historical data complemented by ongoing
measurements, the relationship between the frequency of harmful algal
blooms, fish kill incidents, and oxygen depletions, was investigated. In the Sea
of Oman, the seasonal pattern exhibited a tendency of fish kill incidents to
increase, from January to November. In the western Arabian Sea, the pattern
was different- maximal occurrence of fish kill incidences was observed in
December and January. In 1988-2011, the number of harmful algal blooms
accompanied by fish kills was 4 times higher for the Sea of Oman (N= 91)
compared to the Arabian Sea coast (N= 22), whereas the total number of fish
kill incidents was about the same (22 versus 25). This means that the Arabian
Sea coast faced more frequent harmful blooms than the Sea of Oman. The Sea
of Oman coastal time series of the dissolved oxygen concentration implied a
steady decline throughout the year, from January to December. The fish kill
incidents in this region were mainly driven by oxygen depletions, whereas in
the Arabian Sea these incidents were mediated by the harmful algal blooms
along with the oxygen depletions. In analyzing the Omani coast as a whole,
the Ridge Multiple Regression Analysis implied the dissolved oxygen
concentration and monthly occurrence of algal blooms as the two variables
explaining 75% of the seasonal variations in fish kill incidents.
Piontkovski, Sergey A,Al-Gheilani, Hamed MH,Jupp, Barry P,Al-Azri, Adnan R,Al-Hashmi, Khalid A
Interannual changes in the Sea of Oman ecosystem Journal Article
In: Open Mar Biol J, vol. 6, no. 431, pp. 38-52, 2012.
Abstract | BibTeX | Tags: Gulf of Oman, Harmful Algal Bloom, Hydro-biology, Interannual variability, mass mortality, oceanography, Sea of Oman, Sultanate of Oman, zooplankton
@article{,
title = {Interannual changes in the Sea of Oman ecosystem},
author = {Piontkovski, Sergey A,Al-Gheilani, Hamed MH,Jupp, Barry P,Al-Azri, Adnan R,Al-Hashmi, Khalid A},
year = {2012},
date = {2012-01-01},
journal = {Open Mar Biol J},
volume = {6},
number = {431},
pages = {38-52},
abstract = {Historical data were used to estimate interannual tendencies for the Sea of Oman over the past 50 years.
Declining trends were shown for the atmospheric surface level pressure in the region affected by the Siberian High
atmospheric anomaly, the zonal component of wind speed, concentration of nitrates, biomass of diatoms and sardine
landings. Changes in Zooplankton biomass showed no clear trend. These trends were associated with and accompanied by
rising atmospheric temperature, sea surface temperature, annual variability of the kinetic energy of mesoscale eddies,
frequency of fish kills (along with the death of other animals- dolphins, turtles, and sea birds) and harmful algal bloom
incidents. In terms of interannual coupling between physical and biological processes, the evaluated trends imply that the
weakening of the Siberian High atmospheric anomaly results in the decline of the zonal wind speed and a regional
increase of air temperature. This in turn increases the temperature in the mixed layer which strengthens thermo-haline
stratification of the water column. Increasing stratification prevents the penetration of nutrients into the mixed layer and
does not favor the interannual increase of biological productivity, although annual variation of biological productivity has
increased, from 1997 to 2008.},
keywords = {Gulf of Oman, Harmful Algal Bloom, Hydro-biology, Interannual variability, mass mortality, oceanography, Sea of Oman, Sultanate of Oman, zooplankton},
pubstate = {published},
tppubtype = {article}
}
Historical data were used to estimate interannual tendencies for the Sea of Oman over the past 50 years.
Declining trends were shown for the atmospheric surface level pressure in the region affected by the Siberian High
atmospheric anomaly, the zonal component of wind speed, concentration of nitrates, biomass of diatoms and sardine
landings. Changes in Zooplankton biomass showed no clear trend. These trends were associated with and accompanied by
rising atmospheric temperature, sea surface temperature, annual variability of the kinetic energy of mesoscale eddies,
frequency of fish kills (along with the death of other animals- dolphins, turtles, and sea birds) and harmful algal bloom
incidents. In terms of interannual coupling between physical and biological processes, the evaluated trends imply that the
weakening of the Siberian High atmospheric anomaly results in the decline of the zonal wind speed and a regional
increase of air temperature. This in turn increases the temperature in the mixed layer which strengthens thermo-haline
stratification of the water column. Increasing stratification prevents the penetration of nutrients into the mixed layer and
does not favor the interannual increase of biological productivity, although annual variation of biological productivity has
increased, from 1997 to 2008.
Declining trends were shown for the atmospheric surface level pressure in the region affected by the Siberian High
atmospheric anomaly, the zonal component of wind speed, concentration of nitrates, biomass of diatoms and sardine
landings. Changes in Zooplankton biomass showed no clear trend. These trends were associated with and accompanied by
rising atmospheric temperature, sea surface temperature, annual variability of the kinetic energy of mesoscale eddies,
frequency of fish kills (along with the death of other animals- dolphins, turtles, and sea birds) and harmful algal bloom
incidents. In terms of interannual coupling between physical and biological processes, the evaluated trends imply that the
weakening of the Siberian High atmospheric anomaly results in the decline of the zonal wind speed and a regional
increase of air temperature. This in turn increases the temperature in the mixed layer which strengthens thermo-haline
stratification of the water column. Increasing stratification prevents the penetration of nutrients into the mixed layer and
does not favor the interannual increase of biological productivity, although annual variation of biological productivity has
increased, from 1997 to 2008.
Al-Azri, Adnan R,Piontkovski, Sergey A,Al-Hashmi, Khalid A,Goes, Joaquim I,Gomes, Helga do R
Recent outbreaks of harmful algal blooms along the coast of Oman: possible response to climate change? Book
Springer, 2010.
Abstract | BibTeX | Tags: Arabian Sea, Climate change, Harmful Algal Bloom, Hydro-biology, oceanography, Oman, Sea of Oman
@book{,
title = {Recent outbreaks of harmful algal blooms along the coast of Oman: possible response to climate change?},
author = {Al-Azri, Adnan R,Piontkovski, Sergey A,Al-Hashmi, Khalid A,Goes, Joaquim I,Gomes, Helga do R},
year = {2010},
date = {2010-01-01},
journal = {Indian Ocean Tropical Cyclones and Climate Change},
number = {3},
pages = {349-357},
publisher = {Springer},
abstract = {Observations of phytoplankton communities in the coastal region of Oman indicate
that prominent temporal and spatial variability associated with changes in environmental
conditions is brought about by the reversal of the monsoonal cycle. The close
relationship between environmental conditions and phytoplankton communitystructure suggests that any alterations in the monsoon periodicity or its intensity
could have a large influence on phytoplankton communities, with potentially large
impacts on the fisheries resources of Oman in-turn. In the light of the evidence by
Goes et al. (2005), coastal upwelling along the coasts of Somalia, Oman, and
Yemen is intensifying as a result of climate change; our observations assume
tremendous significance impact of climate change in the coastal water of Oman.
The role of cyclonic and anticyclonic eddies in the spatial and temporal abundance
of phytoplankton communities and the changes in dissolved oxygen in the coastal
water of Oman are yet to be investigated.},
keywords = {Arabian Sea, Climate change, Harmful Algal Bloom, Hydro-biology, oceanography, Oman, Sea of Oman},
pubstate = {published},
tppubtype = {book}
}
Observations of phytoplankton communities in the coastal region of Oman indicate
that prominent temporal and spatial variability associated with changes in environmental
conditions is brought about by the reversal of the monsoonal cycle. The close
relationship between environmental conditions and phytoplankton communitystructure suggests that any alterations in the monsoon periodicity or its intensity
could have a large influence on phytoplankton communities, with potentially large
impacts on the fisheries resources of Oman in-turn. In the light of the evidence by
Goes et al. (2005), coastal upwelling along the coasts of Somalia, Oman, and
Yemen is intensifying as a result of climate change; our observations assume
tremendous significance impact of climate change in the coastal water of Oman.
The role of cyclonic and anticyclonic eddies in the spatial and temporal abundance
of phytoplankton communities and the changes in dissolved oxygen in the coastal
water of Oman are yet to be investigated.
that prominent temporal and spatial variability associated with changes in environmental
conditions is brought about by the reversal of the monsoonal cycle. The close
relationship between environmental conditions and phytoplankton communitystructure suggests that any alterations in the monsoon periodicity or its intensity
could have a large influence on phytoplankton communities, with potentially large
impacts on the fisheries resources of Oman in-turn. In the light of the evidence by
Goes et al. (2005), coastal upwelling along the coasts of Somalia, Oman, and
Yemen is intensifying as a result of climate change; our observations assume
tremendous significance impact of climate change in the coastal water of Oman.
The role of cyclonic and anticyclonic eddies in the spatial and temporal abundance
of phytoplankton communities and the changes in dissolved oxygen in the coastal
water of Oman are yet to be investigated.
Shanton,A.
What killed Karachi's Dolphins? Journal Article
In: Natura, vol. 27, no. 222, pp. 18-19, 2003.
Abstract | BibTeX | Tags: Arabian Sea, dolphins, Harmful Algal Bloom, Pakistan
@article{,
title = {What killed Karachi's Dolphins?},
author = {Shanton,A.},
year = {2003},
date = {2003-01-01},
journal = {Natura},
volume = {27},
number = {222},
pages = {18-19},
abstract = {The article describes the stranding of 14 dolphins near Karachi. Gill Braulik, of WWF Pakistan examined 9 of them and various possible causes of mortality are suggested, including a harmful algal bloom, oil spill, general pollution and outflow from a nearby generation plant. The species involved are not specified.},
keywords = {Arabian Sea, dolphins, Harmful Algal Bloom, Pakistan},
pubstate = {published},
tppubtype = {article}
}
The article describes the stranding of 14 dolphins near Karachi. Gill Braulik, of WWF Pakistan examined 9 of them and various possible causes of mortality are suggested, including a harmful algal bloom, oil spill, general pollution and outflow from a nearby generation plant. The species involved are not specified.