The Experts below are selected from a list of 39924 Experts worldwide ranked by ideXlab platform
Gang Huang - One of the best experts on this subject based on the ideXlab platform.
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Mudslide‐caused Ecosystem Degradation following Wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
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mudslide caused Ecosystem Degradation following wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
Jiahu Wang - One of the best experts on this subject based on the ideXlab platform.
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Mudslide‐caused Ecosystem Degradation following Wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
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mudslide caused Ecosystem Degradation following wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
Alan D. Afton - One of the best experts on this subject based on the ideXlab platform.
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Lipid catabolism of invertebrate predator indicates widespread wetland Ecosystem Degradation.
PLOS ONE, 2011Co-Authors: Michael J. Anteau, Alan D. AftonAbstract:: Animals frequently undergo periods when they accumulate lipid reserves for subsequent energetically expensive activities, such as migration or breeding. During such periods, daily lipid-reserve dynamics (DLD) of sentinel species can quantify how landscape modifications affect function, health, and resilience of Ecosystems. Aythya affinis (Eyton 1838; lesser scaup; diving duck) are macroinvertebrate predators; they migrate through an agriculturally dominated landscape in spring where they select wetlands with the greatest food density to refuel and accumulate lipid reserves for subsequent reproduction. We index DLD by measuring plasma-lipid metabolites of female scaup (n = 459) that were refueling at 75 spring migration stopover areas distributed across the upper Midwest, USA. We also indexed DLD for females (n = 44) refueling on a riverine site (Pool 19) south of our upper Midwest study area. We found that mean DLD estimates were significantly (P
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lipid catabolism of invertebrate predator indicates widespread wetland Ecosystem Degradation
PLOS ONE, 2011Co-Authors: Michael J. Anteau, Alan D. AftonAbstract:Animals frequently undergo periods when they accumulate lipid reserves for subsequent energetically expensive activities, such as migration or breeding. During such periods, daily lipid-reserve dynamics (DLD) of sentinel species can quantify how landscape modifications affect function, health, and resilience of Ecosystems. Aythya affinis (Eyton 1838; lesser scaup; diving duck) are macroinvertebrate predators; they migrate through an agriculturally dominated landscape in spring where they select wetlands with the greatest food density to refuel and accumulate lipid reserves for subsequent reproduction. We index DLD by measuring plasma-lipid metabolites of female scaup (n = 459) that were refueling at 75 spring migration stopover areas distributed across the upper Midwest, USA. We also indexed DLD for females (n = 44) refueling on a riverine site (Pool 19) south of our upper Midwest study area. We found that mean DLD estimates were significantly (P<0.05) less than zero in all ecophysiographic regions of the upper Midwest, and the greatest negative value was in the Iowa Prairie Pothole region (-31.6). Mean DLD was 16.8 at Pool 19 and was markedly greater than in any region of the upper Midwest. Our results indicate that females catabolized rather than stored lipid reserves throughout the upper Midwest. Moreover, levels of lipid catabolism are alarming, because scaup use the best quality wetlands available within a given stopover area. Accordingly, these results provide evidence of wetland Ecosystem Degradation across this large agricultural landscape and document affects that are carried-up through several trophic levels. Interestingly, storing of lipids by scaup at Pool 19 likely reflects similar Ecosystem perturbations as observed in the upper Midwest because wetland drainage and agricultural runoff nutrifies the riverine habitat that scaup use at Pool 19. Finally, our results underscore how using this novel technique to monitor DLD, of a carefully selected sentinel species, can index Ecosystem health at a landscape scale.
Diandong Ren - One of the best experts on this subject based on the ideXlab platform.
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Mudslide‐caused Ecosystem Degradation following Wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
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mudslide caused Ecosystem Degradation following wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
David J. Karoly - One of the best experts on this subject based on the ideXlab platform.
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Mudslide‐caused Ecosystem Degradation following Wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
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mudslide caused Ecosystem Degradation following wenchuan earthquake 2008
Geophysical Research Letters, 2009Co-Authors: Diandong Ren, Jiahu Wang, David J. Karoly, Yang Hong, Lance M. Leslie, Gang HuangAbstract:[1] We have applied a scalable and extensible geo-fluid model (SEGMENT) that considers soil mechanics, vegetation transpiration and root mechanical reinforcement, and hydrological processes to simulate two dimensional maps of the landslides occurrence following the 2008 Wenchuan earthquake. Modeled locations and areas generally agree with observations. The model suggests that the potential energy of earth was lowered by 1.52 x 10 15 J by these landslides. With this, the vegetation destroyed transfer ∼235 Tg C to the dead respiring pool and transforms 5.54 × 10 -2 Tg N into unavailable sediments pools and the atmosphere. The cumulative CO 2 release to the atmosphere over the coming decades is comparable to that caused by hurricane Katrina 2005 (∼105 Tg) and equivalent to ∼2% of current annual carbon emissions from global fossil fuel combustion. The nitrogen loss is twice as much as that released by the 2007 California Fire (∼2.5 x 10 -2 Tg). A significant proportion of the nitrogen loss (14%) is in the form of nitrous oxide, which can affect the atmospheric ozone layer.
