The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
B De Groot - One of the best experts on this subject based on the ideXlab platform.
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Environmental Variation vegetation distribution carbon dynamics and water energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes.
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Environmental Variation, vegetation distribution, carbon dynamics and water/energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes
A D Mcguire - One of the best experts on this subject based on the ideXlab platform.
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Environmental Variation vegetation distribution carbon dynamics and water energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes.
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Environmental Variation, vegetation distribution, carbon dynamics and water/energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes
Christian Wirth - One of the best experts on this subject based on the ideXlab platform.
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functional diversity underlies demographic responses to Environmental Variation in european forests
Global Ecology and Biogeography, 2017Co-Authors: Paloma Ruizbenito, Christian Wirth, Sophia Ratcliffe, Alistair S Jump, Lorena Gomezaparicio, Jaime Madrigalgonzalez, Gerald Kandler, Aleksi Lehtonen, Jonas Dahlgren, Jens KattgeAbstract:Aim Biodiversity loss and climate-driven ecosystem modification are leading to substantial changes in forest structure and function. However, the effects of diversity on demographic responses to the environment are poorly understood. We tested the diversity hypothesis (measured through functional diversity) and the mass ratio hypothesis (measured through functional identity) in relation to tree growth, tree mortality and sapling abundance. We sought to determine whether functional diversity underlies demographic responses to Environmental Variation in European forests. Location Europe (Spain, Germany, Wallonia, Finland and Sweden). Methods We used data from five European national forest inventories from boreal to Mediterranean biomes (c. 700,000 trees in 54,000 plots and 143 tree species) and the main forest types across Europe (i.e. from needle-leaved evergreen forests to broad-leaved deciduous forests). For each forest type, we applied maximum likelihood techniques to quantify the relative importance of stand structure, climate and diversity (i.e. functional diversity and functional identity) as determinants of growth, mortality and sapling abundance. We also tested whether demographic responses to Environmental conditions (including stand density, evapotranspiration and temperature anomalies) varied with functional diversity. Results Our results suggest that functional diversity has a positive effect on sapling abundance and growth rates in forests across Europe, while no effect was observed on tree mortality. Functional identity has a strong effect on mortality and sapling abundance, with greater mortality rates in forests dominated by needle-leaved individuals and a greater abundance of saplings in forests dominated by broad-leaved individuals. Furthermore, we observed that functional diversity modified the effects of stand density on demographic responses in Mediterranean forests and the influence of evapotranspiration and temperature anomalies in forests widely distributed across Europe. Main conclusion Our results suggest that functional diversity may play a key role in forest dynamics through complementarity mechanisms, as well as by modulating demographic responses to Environmental Variation.
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Environmental Variation vegetation distribution carbon dynamics and water energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes.
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Environmental Variation, vegetation distribution, carbon dynamics and water/energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes
Ben J. Hayes - One of the best experts on this subject based on the ideXlab platform.
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Unraveling genetic sensitivity of beef cattle to Environmental Variation under tropical conditions
Genetics Selection Evolution, 2019Co-Authors: Roberto Carvalheiro, Roy Costilla, Haroldo H. R. Neves, Lucia G. Albuquerque, Stephen Moore, Ben J. HayesAbstract:AbstractBackgroundSelection of cattle that are less sensitive to Environmental Variation in unfavorable environments and more adapted to harsh conditions is of primary importance for tropical beef cattle production systems. Understanding the genetic background of sensitivity to Environmental Variation is necessary for developing strategies and tools to increase efficiency and sustainability of beef production. We evaluated the degree of sensitivity of beef cattle performance to Environmental Variation, at the animal and molecular marker levels (412 K single nucleotide polymorphisms), by fitting and comparing the results of different reaction norm models (RNM), using a comprehensive dataset of Nellore cattle raised under diverse Environmental conditions.ResultsHeteroscedastic RNM (with different residual variances for Environmental level) provided better fit than homoscedastic RNM. In addition, spline and quadratic RNM outperformed linear RNM, which suggests the existence of a nonlinear genetic component affecting the performance of Nellore cattle. This nonlinearity indicates that within-animal sensitivity depends on the Environmental gradient (EG) level and that animals may present different patterns of sensitivity according to the range of Environmental Variations. The spline RNM showed that sensitivity to Environmental Variation from harsh to average EG is lowly correlated with sensitivity from average to good EG, at both the animal and molecular marker levels. Although the genomic regions that affect sensitivity in harsher environments were not the same as those associated with less challenging environments, the candidate genes within those regions participate in common biological processes such as those related to inflammatory and immune response. Some plausible candidate genes were identified.ConclusionsSensitivity of tropical beef cattle to Environmental Variation is not continuous along the Environmental gradient, which implies that animals that are less sensitive to harsher conditions are not necessarily less responsive to Variations in better Environmental conditions, and vice versa. The same pattern was observed at the molecular marker level, i.e. genomic regions and, consequently, candidate genes associated with sensitivity to harsh conditions were not the same as those associated with sensitivity to less challenging conditions.
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Unraveling genetic sensitivity of beef cattle to Environmental Variation under tropical conditions.
Genetics selection evolution : GSE, 2019Co-Authors: Roberto Carvalheiro, Roy Costilla, Haroldo H. R. Neves, Lucia G. Albuquerque, Stephen S. Moore, Ben J. HayesAbstract:Selection of cattle that are less sensitive to Environmental Variation in unfavorable environments and more adapted to harsh conditions is of primary importance for tropical beef cattle production systems. Understanding the genetic background of sensitivity to Environmental Variation is necessary for developing strategies and tools to increase efficiency and sustainability of beef production. We evaluated the degree of sensitivity of beef cattle performance to Environmental Variation, at the animal and molecular marker levels (412 K single nucleotide polymorphisms), by fitting and comparing the results of different reaction norm models (RNM), using a comprehensive dataset of Nellore cattle raised under diverse Environmental conditions. Heteroscedastic RNM (with different residual variances for Environmental level) provided better fit than homoscedastic RNM. In addition, spline and quadratic RNM outperformed linear RNM, which suggests the existence of a nonlinear genetic component affecting the performance of Nellore cattle. This nonlinearity indicates that within-animal sensitivity depends on the Environmental gradient (EG) level and that animals may present different patterns of sensitivity according to the range of Environmental Variations. The spline RNM showed that sensitivity to Environmental Variation from harsh to average EG is lowly correlated with sensitivity from average to good EG, at both the animal and molecular marker levels. Although the genomic regions that affect sensitivity in harsher environments were not the same as those associated with less challenging environments, the candidate genes within those regions participate in common biological processes such as those related to inflammatory and immune response. Some plausible candidate genes were identified. Sensitivity of tropical beef cattle to Environmental Variation is not continuous along the Environmental gradient, which implies that animals that are less sensitive to harsher conditions are not necessarily less responsive to Variations in better Environmental conditions, and vice versa. The same pattern was observed at the molecular marker level, i.e. genomic regions and, consequently, candidate genes associated with sensitivity to harsh conditions were not the same as those associated with sensitivity to less challenging conditions.
Joy S Clein - One of the best experts on this subject based on the ideXlab platform.
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Environmental Variation vegetation distribution carbon dynamics and water energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes.
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Environmental Variation, vegetation distribution, carbon dynamics and water/energy exchange at high latitudes
Journal of Vegetation Science, 2002Co-Authors: A D Mcguire, Jason Beringer, Joy S Clein, Jagtar S Bhatti, David W Kicklighter, Michael J Apps, Christian Wirth, Howard E Epstein, F. S. Chapin, B De GrootAbstract:The responses of high latitude ecosystems to global change involve complex interactions among Environmental variables, vegetation distribution, carbon dynamics, and water and energy exchange. These responses may have important consequences for the earth system. In this study, we evaluated how vegetation distribution, carbon stocks and turnover, and water and energy exchange are related to Environmental Variation spanned by the network of the IGBP high latitude transects. While the most notable feature of the high latitude transects is that they generally span temperature gradients from southern to northern latitudes, there are substantial differences in temperature among the transects. Also, along each transect temperature co-varies with precipitation and photosynthetically active radiation, which are also variable among the transects. Both climate and disturbance interact to influence latitudinal patterns of vegetation and soil carbon storage among the transects, and vegetation distribution appears to interact with climate to determine exchanges of heat and moisture in high latitudes. Despite limitations imposed by the data we assembled, the analyses in this study have taken an important step toward clarifying the complexity of interactions among Environmental variables, vegetation distribution, carbon stocks and turnover, and water and energy exchange in high latitude regions. This study reveals the need to conduct coordinated global change studies in high latitudes to further elucidate how interactions among climate, disturbance, and vegetation distribution influence carbon dynamics and water and energy exchange in high latitudes