Additions to the boreal flora of the Northwest Territories with a preliminary vascular flora of Scotty Creek

Garon-Labrecque, Marie Eve; Leveille-Bourret, Entienne; Higgins, Kellina L.; Sonnentag, Oliver

doi:10.22621/cfn.v129i4.1757

Cited by 20 publications

(24 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(reindeer lichen), Pleurozium schreberi (feather moss), and Sphagnum spp. (Garon‐Labrecque, Leveille‐Bourret, Higgins, & Sonnentag, ). The average tree height ( H , M ± 1 SD ) is 2.2 m ± 1.2, and stand density is ~0.12 stems per square metre (peat plateaus = 0.18 stems per square metre, bogs = 0.07 stems per square metre, fens = 0.03 stems per square metre), as extracted from the CHM.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Minor contribution of overstorey transpiration to landscape evapotranspiration in boreal permafrost peatlands

et al. 2018

Self Cite

View full text Add to dashboard Cite

Evapotranspiration (ET) is a key component of the water cycle, whereby accurate partitioning of ET into evaporation and transpiration provides important information about the intrinsically coupled carbon, water, and energy fluxes. Currently, global estimates of partitioned evaporative and transpiration fluxes remain highly uncertain, especially for high‐latitude ecosystems where measurements are scarce. Forested peat plateaus underlain by permafrost and surrounded by permafrost‐free wetlands characterize approximately 60% (7.0 × 107 km2) of Canadian peatlands. In this study, 22 Picea mariana (black spruce) individuals, the most common tree species of the North American boreal forest, were instrumented with sap flow sensors within the footprint of an eddy covariance tower measuring ET from a forest–wetland mosaic landscape. Sap flux density (JS), together with remote sensing data and in situ measurements of canopy structure, was used to upscale tree‐level JS to overstorey transpiration (TBS). Black spruce trees growing in nutrient‐poor permafrost peat soils were found to have lower mean JS than those growing in mineral soils. Overall, TBS contributed less than 1% to landscape ET. Climate‐change‐induced forest loss and the expansion of wetlands may further minimize the contributions of TBS to ET and increase the contribution of standing water.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Ericaceous shrubs and Sphagnum spp. generally dominate bogs, whereas deciduous shrubs, sedges, grasses, and brown mosses dominate fens (Garon‐Labrecque et al, ).…”

Section: Methodsmentioning

confidence: 99%

Minor contribution of overstorey transpiration to landscape evapotranspiration in boreal permafrost peatlands

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Trichophorum alpinum , Eriophorum spp., Carex spp.) and scattered tamarack ( Larix laricina ) (Garon‐Lebrecque et al ., in revison). Flat bogs (sometimes referred to as collapse scar bogs) form on a peat plateau after disturbance (i.e.…”

Section: Study Sitementioning

confidence: 97%

The hydrology of interconnected bog complexes in discontinuous permafrost terrains

Connon

Quinton

Craig

et al. 2015

Hydrological Processes

View full text Add to dashboard Cite

In the zone of discontinuous permafrost, the cycling and storage of water within and between wetlands is poorly understood. The presence of intermittent permafrost bodies tends to impede and re‐direct the flow of water. In this region, the landscape is characterized by forested peat plateaus that are underlain by permafrost and are interspersed by permafrost‐free wetlands. These include channel fens which convey water to the basin outlet through wide, hydraulically rough channels and flat bogs which are typically thought to retain moisture inputs as storage. Field studies conducted at a peatland‐dominated landscape near Fort Simpson, Northwest Territories, Canada, indicate the presence of ephemeral drainage channels that form a cascade of connected bogs that ultimately discharges into a channel fen. Consequently, understanding bogs as dynamic transmitters of surface and subsurface flows, rather than simple storage regions, calls for further examination. Whether bogs act as either storage features or flow through features has a direct impact on the runoff contributing area in a basin. Here, two adjacent series of bog cascades were gauged over two consecutive years to determine spatial and temporal changes in effective runoff contributing areas. It was found that runoff varies significantly between two adjacent bog cascades with one cascade producing 125 mm of runoff over the 2‐year period, while the other yielded only 25 mm. The bog cascades are primarily active during the snowmelt season when moisture conditions are high; however flows can also be generated in response to large rain events. It is proposed that bog cascades operate under an ‘element threshold concept’ whereby in order for water to be transmitted through a bog, the depression storage capacity of that bog must first be satisfied. Our work indicates that whether bogs act as storage features or flow‐through features has a direct impact on the runoff contributing area in a basin. Neglecting to represent connected bogs as dynamic transmission features in the landscape is shown to underestimate water available for streamflow by between 5 and 15%, and these systems are therefore a key component of the water balance in discontinuous permafrost regions. Copyright © 2015 John Wiley & Sons, Ltd.

show abstract

“…The dominant bryophyte species in the bogs include Sphagnum balticum and S . magellanicum (Garon‐Labrecque et al , ) as well as S. riparium particularly in the wettest sites. Peat deposits in the basin range from a depth of 2–8 m (McClymont et al , ).…”

Section: Site Descriptionmentioning

confidence: 99%

Hydrometeorological measurements in peatland‐dominated, discontinuous permafrost at Scotty Creek, Northwest Territories, Canada

Haynes

Connon

Quinton

2019

Geoscience Data Journal

View full text Add to dashboard Cite

The discontinuous permafrost region of northwestern Canada is experiencing rapid warming resulting in dramatic land cover change from forested peatland permafrost terrain to treeless wetlands. Extensive research has been conducted throughout this region to gain insight into how climate‐induced land cover change will impact water resources and ecosystem function. This paper presents a hydrological and micrometeorological dataset collected in the Scotty Creek basin, Northwest Territories, Canada over the period of 01 October 2014 to 30 September 2015, a sample of the intensive and coordinated measurements collected annually at this site. Micrometeorological data collected from four stations, one located in each of the land cover types representative of those comprising the Scotty Creek basin including bog, channel fen, stable peat plateau and peat plateau undergoing rapid permafrost degradation and loss, are presented. Monitored micrometeorological variables include incoming and outgoing shortwave and longwave radiation, air temperature, relative humidity, wind speed, precipitation (rain and snow) and snow depth. Deep ground temperatures (~1–10 m below the ground surface) from a channel fen as well as disturbed sites common to the basin including a seismic line and winter road are presented. Water levels were also monitored in the representative land cover types over this period. This dataset is available from the Wilfrid Laurier University Library Research Data Repository (https://doi.org/10.5683/SP/OQDRJG) and can be used in coordination with other hydrological and micrometeorological datasets to examine spatio‐temporal effects of meteorological conditions on local hydrological responses across cold regions.

show abstract

Additions to the boreal flora of the Northwest Territories with a preliminary vascular flora of Scotty Creek

Cited by 20 publications

References 12 publications

Minor contribution of overstorey transpiration to landscape evapotranspiration in boreal permafrost peatlands

Minor contribution of overstorey transpiration to landscape evapotranspiration in boreal permafrost peatlands

The hydrology of interconnected bog complexes in discontinuous permafrost terrains

Hydrometeorological measurements in peatland‐dominated, discontinuous permafrost at Scotty Creek, Northwest Territories, Canada

Contact Info

Product

Resources

About