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Titel |
From terrestrial to aquatic fluxes: Integrating stream dynamics within a dynamic global vegetation modeling framework |
VerfasserIn |
Jerad Hoy, Benjamin Poulter, Kristen Emmett, Molly Cross, Robert Al-Chokhachy, Marco Maneta |
Konferenz |
EGU General Assembly 2016
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Medientyp |
Artikel
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Sprache |
en
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 18 (2016) |
Datensatznummer |
250125487
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Publikation (Nr.) |
EGU/EGU2016-5073.pdf |
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Zusammenfassung |
Integrated terrestrial ecosystem models simulate the dynamics and feedbacks between
climate, vegetation, disturbance, and hydrology and are used to better understand
biogeography and biogeochemical cycles. Extending dynamic vegetation models to the
aquatic interface requires coupling surface and sub-surface runoff to catchment routing
schemes and has the potential to enhance how researchers and managers investigate how
changes in the environment might impact the availability of water resources for human and
natural systems. In an effort towards creating such a coupled model, we developed
catchment-based hydrologic routing and stream temperature model to pair with LPJ-GUESS,
a dynamic global vegetation model. LPJ-GUESS simulates detailed stand-level vegetation
dynamics such as growth, carbon allocation, and mortality, as well as various physical and
hydrologic processes such as canopy interception and through-fall, and can be applied at
small spatial scales, i.e., 1 km.
We demonstrate how the coupled model can be used to investigate the effects of transient
vegetation dynamics and CO2 on seasonal and annual stream discharge and temperature
regimes. As a direct management application, we extend the modeling framework to predict
habitat suitability for fish habitat within the Greater Yellowstone Ecosystem, a 200,000 km2
region that provides critical habitat for a range of aquatic species. The model is used to
evaluate, quantitatively, the effects of management practices aimed to enhance hydrologic
resilience to climate change, and benefits for water storage and fish habitat in the coming
century. |
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