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Groundwater connections between the boreal landscape and its headwater streams: the role of discrete riparian inflow points (DRIPs)

Ploum, Stefan W (2021). Groundwater connections between the boreal landscape and its headwater streams: the role of discrete riparian inflow points (DRIPs). Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-732-8
eISBN 978-91-7760-733-5
[Doctoral thesis]

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Abstract

River networks connect the Swedish boreal landscape with the Baltic Sea. Groundwater provides a majority of the river water, and therefore it is important to understand the mechanisms of groundwater-stream interactions. The riparian zone, or near stream area, is an important terrestrial interface where groundwater becomes stream water. This thesis focused on riparian areas where subsurface flow paths converge, referred to as discrete riparian inflow points (DRIPs). DRIPs connect a large part of the landscape with a narrow section of the stream, and therefore represent landscape connectivity between hillslope and catchment scales. Results showed that DRIPs have near-surface groundwater levels and organic-rich groundwater chemistry. Combined with flow path convergence, this facilitates high mobilization rates of organic-rich groundwater to local points along stream reaches, which affects local stream ecosystems as well as downstream transport of carbon. Moreover, the response of DRIPs to changing hydrological conditions indicated that hydrological processes deviate from the rest of the riparian zone. Interactions between groundwater, peat-rich soil, vegetation and biota can be attributed to the contrasting characteristics of DRIPs compared to the rest of the riparian zone. This thesis demonstrated that DRIPs play an important role in both terrestrial and aquatic ecosystems in the Swedish boreal landscape. Therefore, DRIPs need to be explicitly considered in sustainable forest management.

Authors/Creators:Ploum, Stefan W
Title:Groundwater connections between the boreal landscape and its headwater streams: the role of discrete riparian inflow points (DRIPs)
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2021
Number:2021:27
Number of Pages:65
Publisher:Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-732-8
ISBN for electronic version:978-91-7760-733-5
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Geochemistry
Keywords:DRIP, boreal, landscape, connectivity, stream, riparian, groundwater, forest, hydrology, carbon
URN:NBN:urn:nbn:se:slu:epsilon-p-111341
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111341
ID Code:23253
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:12 Apr 2021 14:03
Metadata Last Modified:14 Apr 2021 13:33

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