Join the Coastal Rainforest Margins Research Network Seminar on April 28th from 11:oo AM to 12:30 PM AKDT to hear the latest from coastal margins researchers on terrestrial and marine processes in the North Pacific Coastal Temperate Rainforest.
11:00-11:20 AM – Carbon cycling and budget studies on Vancouver Island: Preliminary finding from 25+year remeasurements of the Coastal Forest Chronosequences (CFC) study
J.A. (Tony) Trofymow, Research Scientist, Canadian Forest Service and Adjunct Professor, University of Victoria, BC
In 1991 the CFC study was initiated on Vancouver Island, British Columbia to examine how forests recover in second-growth stands and compare to old forests through comparisons of different aged stands of similar type and disturbance history, a chronosequence. Here we present preliminary findings from the 25+ year remeasurements of the CFC project plots completed in 2021 and discuss how measured C stock changes compare to those inferred from the chronosequences.
11:20-11:40 AM – A glass half full: Perspectives on the persistence of soil carbon
Dave D’Amore, Research Soil Scientist, PNW Research Station, Juneau, AK
Soils act as an enormous type of ecological battery storing potential energy of reduced carbon. The mechanisms for the persistence of this stored carbon and its release is one of the most compelling questions facing soil scientists as terrestrial carbon storage is dominated by soils, which act as an important mitigating force for accumulation of atmospheric CO2. New knowledge about soils is emerging at a very rapid pace due to the practice of a new understanding of soil carbon storage and intense investigations worldwide.
11:40- 12:00 PM – Watershed Classification Predicts Streamflow Regime and Organic Carbon Dynamics in the Northeast Pacific Coastal Temperate Rainforest
Ian Giesbrecht, Ecosystem Scientist at Hakai Institute and PhD Candidate at Simon Fraser University
Watershed characteristics determine the quantity, quality, and timing of freshwater runoff to the coastal ocean, yet strong spatial gradients among watersheds hinder our understanding of these land-sea linkages in geographically complex regions. We present a new hydro-biogeochemical classification of all 2,705 coastal watersheds from Southeast Alaska through Northern California, validated with streamflow and dissolved organic carbon concentration data from watershed outlets.
12:00-12:20 PM – From canopy to consumer: production and modification of terrestrial DOM in a temperate forest
Megan Behnke, CRMRN postdoc
This talk will describe the use of bioincubations and high resolution DOM characterization techniques to explore how DOM leached from soil and vegetation is modified during transport through temperate rainforest ecosystems.
12:20-12:30 PM – Questions and Discussion