The Experts below are selected from a list of 16983 Experts worldwide ranked by ideXlab platform
N L Bindoff - One of the best experts on this subject based on the ideXlab platform.
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climate change and southern ocean ecosystems i how changes in physical habitats directly affect Marine Biota
Global Change Biology, 2014Co-Authors: Andrew Constable, Jessica Melbournethomas, Stuart Corney, Kevin R Arrigo, Christophe Barbraud, David K A Barnes, N L BindoffAbstract:Antarctic and Southern Ocean (ASO) Marine ecosystems have been changing for at least the last 30 years, including in response to increasing ocean temperatures and changes in the extent and seasonality of sea ice; the magnitude and direction of these changes differ between regions around Antarctica that could see populations of the same species changing differently in different regions. This article reviews current and expected changes in ASO physical habitats in response to climate change. It then reviews how these changes may impact the autecology of Marine Biota of this polar region: microbes, zooplankton, salps, Antarctic krill, fish, cephalopods, Marine mammals, seabirds, and benthos. The general prognosis for ASO Marine habitats is for an overall warming and freshening, strengthening of westerly winds, with a potential pole-ward movement of those winds and the frontal systems, and an increase in ocean eddy activity. Many habitat parameters will have regionally specific changes, particularly relating to sea ice characteristics and seasonal dynamics. Lower trophic levels are expected to move south as the ocean conditions in which they are currently found move pole-ward. For Antarctic krill and finfish, the latitudinal breadth of their range will depend on their tolerance of warming oceans and changes to productivity. Ocean acidification is a concern not only for calcifying organisms but also for crustaceans such as Antarctic krill; it is also likely to be the most important change in benthic habitats over the coming century. For Marine mammals and birds, the expected changes primarily relate to
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climate change and southern ocean ecosystems i how changes in physical habitats directly affect Marine Biota
Global Change Biology, 2014Co-Authors: Andrew Constable, Jessica Melbournethomas, Stuart Corney, Kevin R Arrigo, Christophe Barbraud, David K A Barnes, N L BindoffAbstract:Antarctic and Southern Ocean (ASO) Marine ecosystems have been changing for at least the last 30 years, including in response to increasing ocean temperatures and changes in the extent and seasonality of sea ice; the magnitude and direction of these changes differ between regions around Antarctica that could see populations of the same species changing differently in different regions. This article reviews current and expected changes in ASO physical habitats in response to climate change. It then reviews how these changes may impact the autecology of Marine Biota of this polar region: microbes, zooplankton, salps, Antarctic krill, fish, cephalopods, Marine mammals, seabirds, and benthos. The general prognosis for ASO Marine habitats is for an overall warming and freshening, strengthening of westerly winds, with a potential pole-ward movement of those winds and the frontal systems, and an increase in ocean eddy activity. Many habitat parameters will have regionally specific changes, particularly relating to sea ice characteristics and seasonal dynamics. Lower trophic levels are expected to move south as the ocean conditions in which they are currently found move pole-ward. For Antarctic krill and finfish, the latitudinal breadth of their range will depend on their tolerance of warming oceans and changes to productivity. Ocean acidification is a concern not only for calcifying organisms but also for crustaceans such as Antarctic krill; it is also likely to be the most important change in benthic habitats over the coming century. For Marine mammals and birds, the expected changes primarily relate to their flexibility in moving to alternative locations for food and the energetic cost of longer or more complex foraging trips for those that are bound to breeding colonies. Few species are sufficiently well studied to make comprehensive species-specific vulnerability assessments possible. Priorities for future work are discussed.
Antonio Canals - One of the best experts on this subject based on the ideXlab platform.
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a multinebulization technique for the determination of trace metals in a Marine Biota sample by on line isotope dilution inductively coupled plasma mass spectrometry oid icp ms
Journal of Analytical Atomic Spectrometry, 2020Co-Authors: Miriam Garcia, Miguel Angel Aguirre, Emilia Vassileva, Antonio CanalsAbstract:A new concept of a nebulizer (i.e., multinebulizer) has been employed for trace element (e.g., Cd, Cu, Hg, Ni, Pb, and Zn) determination in Marine Biota samples (e.g., fish sample). To this end, an analytical methodology based on the combination of a multinebulizer with an isotope dilution (ID) calibration strategy and inductively coupled plasma mass spectrometry (ICP-MS) has been proposed. In this way, the on-line isotope dilution (OID) is accomplished by the simultaneous introduction of the liquid samples/standard and the isotopic reference solution (i.e., spike) into the plasma with an efficient mixing between them, which takes place at the inner cavity of the multinebulizer tip. The proposed OID-ICP-MS analytical methodology allows the fast determination of Cd, Cu, Hg, Ni, Pb and Zn in a Biota sample certified reference material (CRM) (e.g., IAEA-476) with limits of detection of 0.006, 0.4, 0.09, 30, 0.2 and 4 ng g−1, respectively, and recovery values ranging from 97 to 103%. The primary advantage offered by the proposed analytical methodology is that the time-consuming spiking step in the conventional ID analysis is avoided. This yields savings in both the total time and cost of the analysis per sample. Hence, it has been proved that OID-ICP-MS using a multinebulizer is a promising solution for the trace element analysis of samples with a high matrix content, which simplifies operation and significantly increases sample throughput and productivity.
Yi Zhong - One of the best experts on this subject based on the ideXlab platform.
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halogenated organic pollutants in Marine Biota from the xuande atoll south china sea levels biomagnification and dietary exposure
Marine Pollution Bulletin, 2017Co-Authors: Yongxia Hu, Zaiwang Zhang, Xiangrong Xu, Hengxiang Li, Yi ZhongAbstract:Abstract Six Marine Biota species were collected from the Xuande Atoll, South China Sea to investigate the bioaccumulation of dichlorodiphenyltrichloroethane (DDT), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE) and dechlorane plus (DP). Pike conger ( Muraenesox talabonoides ) had the highest concentrations of halogenated organic pollutants (HOPs) among the six Marine Biota species. DDTs were the predominant HOPs, followed by PCBs and PBDEs, with minor contributions of DBDPE and DP. Twenty-one percent of samples had ratios of (DDE + DDD)/ΣDDTs lower than 0.5, implying the presence of fresh DDT inputs in the environment of the Xuande Atoll. The biomagnification factor values for DDTs, PCBs, PBDEs and DP were higher than 1, suggesting biomagnification of these contaminants in the Marine food chains. Consumption of seafood from the Xuande Atoll might not subject local residents in the coastal areas of South China to health risks as far as HOPs are concerned.
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halogenated organic pollutants in Marine Biota from the xuande atoll south china sea levels biomagnification and dietary exposure
Marine Pollution Bulletin, 2017Co-Authors: Yongxia Hu, Zaiwang Zhang, Xiangrong Xu, Hengxiang Li, Yi ZhongAbstract:Abstract Six Marine Biota species were collected from the Xuande Atoll, South China Sea to investigate the bioaccumulation of dichlorodiphenyltrichloroethane (DDT), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), decabromodiphenyl ethane (DBDPE) and dechlorane plus (DP). Pike conger ( Muraenesox talabonoides ) had the highest concentrations of halogenated organic pollutants (HOPs) among the six Marine Biota species. DDTs were the predominant HOPs, followed by PCBs and PBDEs, with minor contributions of DBDPE and DP. Twenty-one percent of samples had ratios of (DDE + DDD)/ΣDDTs lower than 0.5, implying the presence of fresh DDT inputs in the environment of the Xuande Atoll. The biomagnification factor values for DDTs, PCBs, PBDEs and DP were higher than 1, suggesting biomagnification of these contaminants in the Marine food chains. Consumption of seafood from the Xuande Atoll might not subject local residents in the coastal areas of South China to health risks as far as HOPs are concerned.
Andrew Constable - One of the best experts on this subject based on the ideXlab platform.
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climate change and southern ocean ecosystems i how changes in physical habitats directly affect Marine Biota
Global Change Biology, 2014Co-Authors: Andrew Constable, Jessica Melbournethomas, Stuart Corney, Kevin R Arrigo, Christophe Barbraud, David K A Barnes, N L BindoffAbstract:Antarctic and Southern Ocean (ASO) Marine ecosystems have been changing for at least the last 30 years, including in response to increasing ocean temperatures and changes in the extent and seasonality of sea ice; the magnitude and direction of these changes differ between regions around Antarctica that could see populations of the same species changing differently in different regions. This article reviews current and expected changes in ASO physical habitats in response to climate change. It then reviews how these changes may impact the autecology of Marine Biota of this polar region: microbes, zooplankton, salps, Antarctic krill, fish, cephalopods, Marine mammals, seabirds, and benthos. The general prognosis for ASO Marine habitats is for an overall warming and freshening, strengthening of westerly winds, with a potential pole-ward movement of those winds and the frontal systems, and an increase in ocean eddy activity. Many habitat parameters will have regionally specific changes, particularly relating to sea ice characteristics and seasonal dynamics. Lower trophic levels are expected to move south as the ocean conditions in which they are currently found move pole-ward. For Antarctic krill and finfish, the latitudinal breadth of their range will depend on their tolerance of warming oceans and changes to productivity. Ocean acidification is a concern not only for calcifying organisms but also for crustaceans such as Antarctic krill; it is also likely to be the most important change in benthic habitats over the coming century. For Marine mammals and birds, the expected changes primarily relate to
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climate change and southern ocean ecosystems i how changes in physical habitats directly affect Marine Biota
Global Change Biology, 2014Co-Authors: Andrew Constable, Jessica Melbournethomas, Stuart Corney, Kevin R Arrigo, Christophe Barbraud, David K A Barnes, N L BindoffAbstract:Antarctic and Southern Ocean (ASO) Marine ecosystems have been changing for at least the last 30 years, including in response to increasing ocean temperatures and changes in the extent and seasonality of sea ice; the magnitude and direction of these changes differ between regions around Antarctica that could see populations of the same species changing differently in different regions. This article reviews current and expected changes in ASO physical habitats in response to climate change. It then reviews how these changes may impact the autecology of Marine Biota of this polar region: microbes, zooplankton, salps, Antarctic krill, fish, cephalopods, Marine mammals, seabirds, and benthos. The general prognosis for ASO Marine habitats is for an overall warming and freshening, strengthening of westerly winds, with a potential pole-ward movement of those winds and the frontal systems, and an increase in ocean eddy activity. Many habitat parameters will have regionally specific changes, particularly relating to sea ice characteristics and seasonal dynamics. Lower trophic levels are expected to move south as the ocean conditions in which they are currently found move pole-ward. For Antarctic krill and finfish, the latitudinal breadth of their range will depend on their tolerance of warming oceans and changes to productivity. Ocean acidification is a concern not only for calcifying organisms but also for crustaceans such as Antarctic krill; it is also likely to be the most important change in benthic habitats over the coming century. For Marine mammals and birds, the expected changes primarily relate to their flexibility in moving to alternative locations for food and the energetic cost of longer or more complex foraging trips for those that are bound to breeding colonies. Few species are sufficiently well studied to make comprehensive species-specific vulnerability assessments possible. Priorities for future work are discussed.
Miriam Garcia - One of the best experts on this subject based on the ideXlab platform.
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a multinebulization technique for the determination of trace metals in a Marine Biota sample by on line isotope dilution inductively coupled plasma mass spectrometry oid icp ms
Journal of Analytical Atomic Spectrometry, 2020Co-Authors: Miriam Garcia, Miguel Angel Aguirre, Emilia Vassileva, Antonio CanalsAbstract:A new concept of a nebulizer (i.e., multinebulizer) has been employed for trace element (e.g., Cd, Cu, Hg, Ni, Pb, and Zn) determination in Marine Biota samples (e.g., fish sample). To this end, an analytical methodology based on the combination of a multinebulizer with an isotope dilution (ID) calibration strategy and inductively coupled plasma mass spectrometry (ICP-MS) has been proposed. In this way, the on-line isotope dilution (OID) is accomplished by the simultaneous introduction of the liquid samples/standard and the isotopic reference solution (i.e., spike) into the plasma with an efficient mixing between them, which takes place at the inner cavity of the multinebulizer tip. The proposed OID-ICP-MS analytical methodology allows the fast determination of Cd, Cu, Hg, Ni, Pb and Zn in a Biota sample certified reference material (CRM) (e.g., IAEA-476) with limits of detection of 0.006, 0.4, 0.09, 30, 0.2 and 4 ng g−1, respectively, and recovery values ranging from 97 to 103%. The primary advantage offered by the proposed analytical methodology is that the time-consuming spiking step in the conventional ID analysis is avoided. This yields savings in both the total time and cost of the analysis per sample. Hence, it has been proved that OID-ICP-MS using a multinebulizer is a promising solution for the trace element analysis of samples with a high matrix content, which simplifies operation and significantly increases sample throughput and productivity.