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Dissecting the ecosystem service of large-scale pollutant retention: The role of wetlands and other landscape features.

Quin A, Jaramillo F, Destouni G - Ambio (2015)

Bottom Line: Various features of a landscape contribute to the regulating ecosystem service of reducing waterborne pollutant loading to downstream environments.At local scales, wetlands have been shown to be effective in retaining pollutants.We develop a general analytical model which shows that the retention contribution of wetlands and other landscape features is only significant if a large fraction of the total waterborne pollutant transport passes through them.

View Article: PubMed Central - PubMed

Affiliation: Department of Physical Geography and Quaternary Geology, Stockholm University, 106 91, Stockholm, Sweden, andrew.quin@natgeo.su.se.

ABSTRACT
Various features of a landscape contribute to the regulating ecosystem service of reducing waterborne pollutant loading to downstream environments. At local scales, wetlands have been shown to be effective in retaining pollutants. Here, we investigate the landscape-scale contribution to pollutant retention provided by multiple wetlands. We develop a general analytical model which shows that the retention contribution of wetlands and other landscape features is only significant if a large fraction of the total waterborne pollutant transport passes through them. Next, by means of a statistical analysis of official data, we quantify the nutrient retention contribution of wetlands for multiple sub-catchments in two Swedish Water Management Districts. We compare this with the retention contribution of two other landscape features: the waterborne transport distance and major lakes. The landscape-scale retention contribution of wetlands is undetectable; rather, the other two landscape features account for much of the total nutrient retention.

No MeSH data available.


Schematic representation of the general conceptualization framework for pollutant retention in the landscape, showing relative retention rSC for a sub-catchment. Min is the total pollutant load to the sub-catchment from all point and diffuse source. Mout is the pollutant load which reaches the coastal outlet via the transport pathway after retention in the landscape
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Fig1: Schematic representation of the general conceptualization framework for pollutant retention in the landscape, showing relative retention rSC for a sub-catchment. Min is the total pollutant load to the sub-catchment from all point and diffuse source. Mout is the pollutant load which reaches the coastal outlet via the transport pathway after retention in the landscape

Mentions: The relative retention (rSC, Fig. 1) of pollutant inputs from all (diffuse, point, surface, subsurface) sources of a catchment or sub-catchment (for simplicity, referred to only as ‘catchment’ in this sub-section), and along the pathways of waterborne pollutant transport from that catchment to the coast, may be conceptualized and quantified as:Fig. 1


Dissecting the ecosystem service of large-scale pollutant retention: The role of wetlands and other landscape features.

Quin A, Jaramillo F, Destouni G - Ambio (2015)

Schematic representation of the general conceptualization framework for pollutant retention in the landscape, showing relative retention rSC for a sub-catchment. Min is the total pollutant load to the sub-catchment from all point and diffuse source. Mout is the pollutant load which reaches the coastal outlet via the transport pathway after retention in the landscape
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4288994&req=5

Fig1: Schematic representation of the general conceptualization framework for pollutant retention in the landscape, showing relative retention rSC for a sub-catchment. Min is the total pollutant load to the sub-catchment from all point and diffuse source. Mout is the pollutant load which reaches the coastal outlet via the transport pathway after retention in the landscape
Mentions: The relative retention (rSC, Fig. 1) of pollutant inputs from all (diffuse, point, surface, subsurface) sources of a catchment or sub-catchment (for simplicity, referred to only as ‘catchment’ in this sub-section), and along the pathways of waterborne pollutant transport from that catchment to the coast, may be conceptualized and quantified as:Fig. 1

Bottom Line: Various features of a landscape contribute to the regulating ecosystem service of reducing waterborne pollutant loading to downstream environments.At local scales, wetlands have been shown to be effective in retaining pollutants.We develop a general analytical model which shows that the retention contribution of wetlands and other landscape features is only significant if a large fraction of the total waterborne pollutant transport passes through them.

View Article: PubMed Central - PubMed

Affiliation: Department of Physical Geography and Quaternary Geology, Stockholm University, 106 91, Stockholm, Sweden, andrew.quin@natgeo.su.se.

ABSTRACT
Various features of a landscape contribute to the regulating ecosystem service of reducing waterborne pollutant loading to downstream environments. At local scales, wetlands have been shown to be effective in retaining pollutants. Here, we investigate the landscape-scale contribution to pollutant retention provided by multiple wetlands. We develop a general analytical model which shows that the retention contribution of wetlands and other landscape features is only significant if a large fraction of the total waterborne pollutant transport passes through them. Next, by means of a statistical analysis of official data, we quantify the nutrient retention contribution of wetlands for multiple sub-catchments in two Swedish Water Management Districts. We compare this with the retention contribution of two other landscape features: the waterborne transport distance and major lakes. The landscape-scale retention contribution of wetlands is undetectable; rather, the other two landscape features account for much of the total nutrient retention.

No MeSH data available.