The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Gerald T Ankley - One of the best experts on this subject based on the ideXlab platform.
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich. Environ Toxicol Chem 2013;32:1592–1603. © 2013 SETAC
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich.
David H Miller - One of the best experts on this subject based on the ideXlab platform.
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich.
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich. Environ Toxicol Chem 2013;32:1592–1603. © 2013 SETAC
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density dependent matrix model for gray wolf Population Projection
Ecological Modelling, 2002Co-Authors: David H Miller, Alvin L Jensen, James H HammillAbstract:A Leslie matrix model was developed for a small gray wolf (Canis lupus) Population recolonizing an area with abundant resources and uncontrolled by humans. The model was modified to describe Population growth in a limited environment using a discrete form of the logistic equation. The density dependent Leslie matrix model was applied to investigate gray wolf Population recovery in the Upper Peninsula of Michigan. Estimates from the density dependent matrix model were compared with published winter count estimates from the Michigan Department of Natural Resources. The gray wolf Population in the Upper Peninsula of Michigan was projected to reach a total of 929 wolves by the year 2012 with a 95% confidence interval of 662 to 1153 wolves.
Yunxin Miao - One of the best experts on this subject based on the ideXlab platform.
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Demographic comparison and Population Projection of Rhynchophorus ferrugineus (Coleoptera: Curculionidae) reared on sugarcane at different temperatures
Scientific Reports, 2016Co-Authors: Lu Peng, Yunxin MiaoAbstract:Demographic comparison and Population Projection of Rhynchophorus ferrugineus (Coleoptera: Curculionidae) reared on sugarcane at different temperatures
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demographic comparison and Population Projection of rhynchophorus ferrugineus coleoptera curculionidae reared on sugarcane at different temperatures
Scientific Reports, 2016Co-Authors: Lu Peng, Yunxin Miao, Youming HouAbstract:Understanding how temperature affects fitness is important for conservation and pest management, especially in the era of global climate change. Rhynchophorus ferrugineus (Oliver) (Coleoptera: Curculionidae) is a worldwide pest of many economically important crops. Although much is known about this pest's life cycle, its adaptability to different temperatures is not fully understood. Here, we used age- and stage-specific life tables to investigate the effects of temperature on fitness-related traits and demographic parameters of R. ferrugineus under eight constant temperature regimens in the laboratory. The growth potential of these Populations was also evaluated. The greatest longevity for males and females was 158.0 d at 24 °C and 144.5 d at 21 °C, respectively, but mean total fecundity was the highest at 27 °C. The intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) increased initially at low temperatures and then decreased. All metrics reached a maximum at 27 °C and a minimum at 36 °C. Mean generation times (T ) decreased across the temperature range with a minimum at 36 °C. Our results indicate that the optimum temperature for growth of R. ferrugineus was approximately 27 °C. Our work will be of value for developing strategies for control management of this pest species.
Lu Peng - One of the best experts on this subject based on the ideXlab platform.
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Demographic comparison and Population Projection of Rhynchophorus ferrugineus (Coleoptera: Curculionidae) reared on sugarcane at different temperatures
Scientific Reports, 2016Co-Authors: Lu Peng, Yunxin MiaoAbstract:Demographic comparison and Population Projection of Rhynchophorus ferrugineus (Coleoptera: Curculionidae) reared on sugarcane at different temperatures
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demographic comparison and Population Projection of rhynchophorus ferrugineus coleoptera curculionidae reared on sugarcane at different temperatures
Scientific Reports, 2016Co-Authors: Lu Peng, Yunxin Miao, Youming HouAbstract:Understanding how temperature affects fitness is important for conservation and pest management, especially in the era of global climate change. Rhynchophorus ferrugineus (Oliver) (Coleoptera: Curculionidae) is a worldwide pest of many economically important crops. Although much is known about this pest's life cycle, its adaptability to different temperatures is not fully understood. Here, we used age- and stage-specific life tables to investigate the effects of temperature on fitness-related traits and demographic parameters of R. ferrugineus under eight constant temperature regimens in the laboratory. The growth potential of these Populations was also evaluated. The greatest longevity for males and females was 158.0 d at 24 °C and 144.5 d at 21 °C, respectively, but mean total fecundity was the highest at 27 °C. The intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) increased initially at low temperatures and then decreased. All metrics reached a maximum at 27 °C and a minimum at 36 °C. Mean generation times (T ) decreased across the temperature range with a minimum at 36 °C. Our results indicate that the optimum temperature for growth of R. ferrugineus was approximately 27 °C. Our work will be of value for developing strategies for control management of this pest species.
Xiangsheng Xia - One of the best experts on this subject based on the ideXlab platform.
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich. Environ Toxicol Chem 2013;32:1592–1603. © 2013 SETAC
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assessment of status of white sucker catostomus commersoni Populations exposed to bleached kraft pulp mill effluent
Environmental Toxicology and Chemistry, 2013Co-Authors: David H Miller, Joseph E Tietge, Mark E Mcmaster, Kelly R Munkittrick, Xiangsheng Xia, Gerald T AnkleyAbstract:Credible ecological risk assessments often need to include analysis of Population-level impacts. In the present study, a predictive model was developed to investigate Population dynamics for white sucker (Catostomus commersoni) exposed to pulp mill effluent at a well-studied site in Jackfish Bay, Lake Superior, Canada. The model uniquely combines a Leslie Population Projection matrix and the logistic equation to translate changes in the fecundity and the age structure of a breeding Population of white sucker exposed to pulp mill effluent to alterations in Population growth rate. Application of this density-dependent Population Projection model requires construction of a life table for the organism of interest, a measure of carrying capacity, and an estimation of the effect of stressors on vital rates. A white sucker Population existing at carrying capacity and subsequently exposed to pulp mill effluent equivalent to a documented exposure experienced during the period 1988 to 1994 in Jackfish Bay would be expected to exhibit a 34% to 51% annual decrease in recruitment during the first 5 yr of exposure and approach a Population size of 71% of carrying capacity. The Jackfish Bay study site contains monitoring data for biochemical endpoints in white sucker, including circulating sex steroid concentrations, that could be combined with Population modeling to utilize the model demonstrated at the Jackfish Bay study site for investigation of other white sucker Populations at sites that are less data-rich.