INVESTIGADORES
PERILLO Gerardo Miguel E.
congresos y reuniones científicas
Título:
Improving the Natural Capital Project?s InVEST Seasonal Water Yield model by incorporating seasonal cryospheric conditions to improve conservation decisionmaking
Autor/es:
LAVANDER, T.M.; SCORDO, F.; PERILLO, V.L.; SEITZ, C.; BRENDEL, A.S.; RUSAK, J.; ARNOTT, S.E.; WEMPLE, B.; PERILLO, G.M.E.; PICCOLO, M.C.; VELEZ CAICEDO, M.I.
Lugar:
MONAHOK
Reunión:
Congreso; GLEON 19; 2017
Institución organizadora:
GLEON
Resumen:
Aquatic ecosystems are experiencing increased pressure and stress due to changes in land use, land cover, and climate change which can increase stress by altering flow regimes, nutrient and sediment loading, and water temperature. One way to reduce the impact of these changes is to manage them under the framework of ecosystem services. That is, to prioritise parcels of land for conservation based on the services they perform. Selectively conserving parcels of land based on their relative contributions to base flow (ground water regeneration) and quick flow (surface run off) is one way of managing these systems to reduce stress. Thus, tools that are able to model the partitioning of flow across a landscape are in demand. The Natural Capital Project´s InVEST Seasonal Water Yield model has been developed to provide an ecosystem services approach to making conservation decisions based on flow partitioning; however, periods of freezing temperatures and snow accumulation are not accounted for by the model. As a result, spring runoff (quick flow) and groundwater recharge (base flow) are inadequately modeled. By incorporating snow accumulation and spring thaw conditions into the model predictions, seasonal contributions to base and quick flow will be improved. We modified the InVEST Seasonal Water Yield model to incorporate freezing temperatures, snow accumulation and spring freshet. We then compared the results to those from the unmodified model across three diverse watersheds to demonstrate the relevance of the models across ecosystems, as well as their utility for assessing changes in aquatic ecosystem services