Water Stewardship Information Sources

Citation Redding, T., S. Lapp, and J. Leach. 2012. Natural disturbance and post-disturbance management effects on selected watershed values. BC Journal of Ecosystems and Management 13(1):63–76.
Organization FORREX
URL http://jem.forrex .org/index.php/jem/article/viewFile/172/106
Abstract/Description or Keywords This extension note summarizes the key findings of the chapter entitled “A synthesis of
the effects of natural disturbance and post-disturbance management on streamflow,
stream temperature, suspended sediment, and aquatic invertebrate populations” of
FORREX Series 28, which is an overview of the available research on the effects of climate
change, natural disturbance (focused on wildfire and insect infestation), and post-disturbance
management actions (primarily clearcut salvage harvesting) on key watershed
processes and values. The scope of the synthesis was limited to the magnitude and timing
of streamflow, stream temperature, suspended sediment, and aquatic invertebrate population
dynamics. In general, the effects on hydrologic processes and watershed functions
are greater following post-disturbance activities; climate change is anticipated to further
negatively compound these natural disturbances. To maintain the resilience of watersheds
(that is, the ability of natural systems to recover from perturbation), management activities
should be designed to maintain natural hydrologic and ecosystem function wherever
possible. Key considerations to maintain resilience include: planning management activities
at the site, watershed and landscape scales, maximizing riparian overstory retention
within 10 metres of streams, minimizing the introduction of fine sediments into surface
water bodies, and monitoring the effects of disturbances and management interventions
to support adaptive management. Using the best available information, along with advice
from qualified watershed professionals, is key to ensuring effective management.
KEYWORDS: natural disturbance; wildfire; climate change; insect infestation; watershed;
hydrology; peakflows; low flows; stream temperature; suspended sediment; forest
management
Information Type article
Regional Watershed Province
Sub-watershed if known
Aquifer #
Comments
Project status complete
Contact Name Todd Redding
Contact Email [email protected]