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Forest Landscape Hydrology in a ‘New Normal’ Era of Climate and Land Use Change

Explore the effects of natural disturbances and human activities on forest ecosystems and their impact on the partitioning of precipitation between evapotranspiration and streamflow. Learn about current forest changes, anticipated forest changes due to climate change, forest management, forest succession, and climate/hydrology reconstruction.

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Forest Landscape Hydrology in a ‘New Normal’ Era of Climate and Land Use Change

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  1. Forest Landscape Hydrology in a‘New Normal’ Era of Climate andLand Use Change Samantha Abel Earth and Physical Science Department Western Oregon University Monmouth, Oregon Email: sabel14@wou.edu

  2. Changes in forest (due to both natural disturbance and human activities) affect how incoming precipitation is partitioned between evapotranspiration and streamflow. — Jones and Wei, et. al, 2019 Introduction

  3. Overview • Introduction and Overview • Current Forest Changes • Natural • Anthropogenic (Human-Driven) • Anticipated Forest Changes • Climate Change • Forest Management • Forest Succession • Climate / Hydrology Reconstruction • Recap and Conclusion

  4. Current Forest Changes Natural • Wildfire • Pathogens and Disease • Insect Attacks • Invasive Species • E.G. weeds • Ice Storms

  5. Current Forest Changes Anthropogenic (Human-Driven) Silviculture Age, biodiversity, thinning, harvest Plantations Agroforestry Urban and Peri-Urban Forestry

  6. Anticipated Forest Changes Climate Change • Wetter and Drier Environments • More in Atmosphere increased forest growth • Extreme Drought • Can lead to stress and tree mortality • Alter Streamflow and Local Hydrology • E.G. annual to ephemeral streams

  7. Anticipated Forest Changes Forest Management Deforestation Loss of riparian forests Loss of urban trees Expansion of agriculture

  8. Anticipated Forest Changes Forest Succession • Changes in Forest Populations: • Age • Species type and number • Structure • Impacts Water Yield / Storage

  9. Climate / Hydrology Reconstruction • Tree Rings • Multi-century reconstructions • Reflects regional history of the water table, flooding, droughts, and precipitation • Stable Water Isotopes • Oxygen, Hydrogen, Carbon • Trace origin of air masses and precipitation

  10. Recap • Overview and Introduction • Current Forest Changes • Natural • Anthropogenic (Human-Driven) • Anticipated Forest Changes • Climate Change • Forest Management • Forest Succession • Climate / Hydrology Reconstruction • Recap and Conclusion

  11. Conclusion aka “trees are good”

  12. – Thank You– Samantha Abel Earth and Physical Science Department Western Oregon University Monmouth, Oregon Email: sabel14@wou.edu

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