Seismic lines are linear clearings constructed across northwestern Canada in peatlands and forests for petroleum exploration. Previous studies have shown that seismic line disturbance can change plant community composition. However, it remains unclear how the compositional change affects plant community functions. The objectives of the study were to determine 1) if peatland plant community functions differently on seismic lines than in the adjacent undisturbed areas, and 2) if newly disturbed seismic lines function differently than older recovering lines, and 3) if seismic line disturbance causes intraspecific trait variations for plants. The study was started in 2021 and took place at Canadian Natural Resources Limited’s Kirby South, NE Alberta. Five replicates of four site types were sampled: 1) undisturbed (reference), 2) disturbed over 20 years ago, 3) disturbed in 2022, 4) disturbed twice (once over 20 years ago and once in 2022). On these 20 sites, we measured plant community composition, and plant functional traits on 17 dominant plant species. Preliminary results indicate that seismic line disturbance has a wide range of effects on plant community. The disturbance didn’t significantly change plant community composition but plant traits and leaf chemistry. Plant height is a trait measured, and results show that plant height is only significantly different between old sites and re-disturbed sites. Leaf carbon was measured as a leaf nutrient, and results suggest leaf carbon level of re-disturbed sites is significantly different from other sites. Results from this study will improve our understanding on seismic line functional recovery in peatlands.
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