2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/08/2017 | 9:30 AM - 9:45 AM | UNDERSTANDING THE EFFECTS OF HIGH INTENSITY FOREST MANAGEMENT ON STREAM ECOSYSTEM INTEGRITY TO PROTECT AQUATIC ECOSYSTEM SERVICES | 301B
UNDERSTANDING THE EFFECTS OF HIGH INTENSITY FOREST MANAGEMENT ON STREAM ECOSYSTEM INTEGRITY TO PROTECT AQUATIC ECOSYSTEM SERVICES
Forests are key suppliers of aquatic ecosystem services (AES); however, forestry may alter forest condition and thus compromise the integrity of stream ecosystems underpinning AES. This study examines a suite of in-stream abiotic and biotic indicators sensitive to disturbance and related to AES in 12 headwater streams with managed catchments ranging in harvesting (18-100 % of the catchment harvested in last 10 years), road density (21-89 road m/ha), stream crossings (0-4) and forest composition (deciduous/mixed/coniferous dominated) and 3 reference streams in New Brunswick (Canada). Most indicators reflect the gradient in forest management intensity, with fine inorganic sediment deposition and entrainment, water chemistry PC1 (related to conductivity, TIC…), DOC aromaticity and humification, temperature and total biofilm biomass increasing, leaf decomposition decreasing, and the benthic macroinvertebrate community structure and composition shifting as management intensity increased. However, our results do not suggest site impairment due to forestry, since biotic endpoints in streams with managed catchments were comparable to those in reference streams. Therefore, it seems that intensive forest management under best management practices in these catchments does not adversely affect stream ecosystem structure and function, and the consequent provision of AES.
- C27 Landuse and Non-Point source Impacts
- C22 Disturbance
- S16 Understanding and mitigating change in freshwater ecosystem services
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Presenters/Authors
Maitane Erdozain
(), University of New Brunswick, maitane.erdozain@gmail.com;
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Karen Kidd
(), McMaster University, karenkidd@mcmaster.ca;
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David Kreutzweiser
(), Great Lakes Forestry Centre, Canadian Forest Service, dave.kreutzweiser@canada.ca;
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Paul Sibley
(), University of Guelph, psibley@uoguelph.ca ;
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