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Fatemeh Hashemi

Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries

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Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries. / Hashemi, Fatemeh; Pohle, Ina ; Pullens, Johannes Wilhelmus Maria; Tornbjerg, Henrik; Kyllmar, Katarina ; Marttila, Hannu; Lepistö, Ahti ; Kløve, Bjørn ; Futter, Martyn N.; Kronvang, Brian.

I: Water, Bind 12, Nr. 6, 1776, 06.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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Hashemi, Fatemeh ; Pohle, Ina ; Pullens, Johannes Wilhelmus Maria ; Tornbjerg, Henrik ; Kyllmar, Katarina ; Marttila, Hannu ; Lepistö, Ahti ; Kløve, Bjørn ; Futter, Martyn N. ; Kronvang, Brian. / Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries. I: Water. 2020 ; Bind 12, Nr. 6.

Bibtex

@article{3cbd1e3d602348999b0036cf551f5ecb,
title = "Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries",
abstract = "Optimal nutrient pollution monitoring and management in catchments requires an in-depth understanding of spatial and temporal factors controlling nutrient dynamics. Such an understanding can potentially be obtained by analysing stream concentration-discharge (C-Q) relationships for hysteresis behaviours and export regimes. Here, a classification scheme including nine different C-Q types was applied to a total of 87 Nordic streams draining mini-catchments (0.1-65 km2). The classification applied is based on a combination of stream export behaviour (dilution, constant, enrichment) and hysteresis rotational pattern (clock-wise, no rotation, anti-clockwise). The scheme has been applied to an 8-year data series (2010-2017) from small streams in Denmark, Sweden, and Finland on daily discharge and discrete nutrient concentrations, including nitrate (NO3-), total organic N (TON), dissolved reactive phosphorus (DRP), and particulate phosphorus (PP). The dominant nutrient export regimes were enrichment for NO3- and constant for TON, DRP, and PP. Nutrient hysteresis patterns were primarily clockwise or no hysteresis. Similarities in types of C-Q relationships were investigated using Principal Component Analysis (PCA) considering effects of catchment size, land use, climate, and dominant soil type. The PCA analysis revealed that land use and air temperature were the dominant factors controlling nutrient C-Q types. Therefore, the nutrient export behaviour in streams draining Nordic mini-catchments seems to be dominantly controlled by their land use characteristics and, to a lesser extent, their climate.",
keywords = "Concentration-discharge relationship, Export behaviour, Hysteresis, PCA, Water quality",
author = "Fatemeh Hashemi and Ina Pohle and Pullens, {Johannes Wilhelmus Maria} and Henrik Tornbjerg and Katarina Kyllmar and Hannu Marttila and Ahti Lepist{\"o} and Bj{\o}rn Kl{\o}ve and Futter, {Martyn N.} and Brian Kronvang",
year = "2020",
month = jun,
doi = "10.3390/w12061776",
language = "English",
volume = "12",
journal = "Water",
issn = "2073-4441",
publisher = "M D P I AG",
number = "6",

}

RIS

TY - JOUR

T1 - Conceptual mini-catchment typologies for testing dominant controls of nutrient dynamics in three Nordic countries

AU - Hashemi, Fatemeh

AU - Pohle, Ina

AU - Pullens, Johannes Wilhelmus Maria

AU - Tornbjerg, Henrik

AU - Kyllmar, Katarina

AU - Marttila, Hannu

AU - Lepistö, Ahti

AU - Kløve, Bjørn

AU - Futter, Martyn N.

AU - Kronvang, Brian

PY - 2020/6

Y1 - 2020/6

N2 - Optimal nutrient pollution monitoring and management in catchments requires an in-depth understanding of spatial and temporal factors controlling nutrient dynamics. Such an understanding can potentially be obtained by analysing stream concentration-discharge (C-Q) relationships for hysteresis behaviours and export regimes. Here, a classification scheme including nine different C-Q types was applied to a total of 87 Nordic streams draining mini-catchments (0.1-65 km2). The classification applied is based on a combination of stream export behaviour (dilution, constant, enrichment) and hysteresis rotational pattern (clock-wise, no rotation, anti-clockwise). The scheme has been applied to an 8-year data series (2010-2017) from small streams in Denmark, Sweden, and Finland on daily discharge and discrete nutrient concentrations, including nitrate (NO3-), total organic N (TON), dissolved reactive phosphorus (DRP), and particulate phosphorus (PP). The dominant nutrient export regimes were enrichment for NO3- and constant for TON, DRP, and PP. Nutrient hysteresis patterns were primarily clockwise or no hysteresis. Similarities in types of C-Q relationships were investigated using Principal Component Analysis (PCA) considering effects of catchment size, land use, climate, and dominant soil type. The PCA analysis revealed that land use and air temperature were the dominant factors controlling nutrient C-Q types. Therefore, the nutrient export behaviour in streams draining Nordic mini-catchments seems to be dominantly controlled by their land use characteristics and, to a lesser extent, their climate.

AB - Optimal nutrient pollution monitoring and management in catchments requires an in-depth understanding of spatial and temporal factors controlling nutrient dynamics. Such an understanding can potentially be obtained by analysing stream concentration-discharge (C-Q) relationships for hysteresis behaviours and export regimes. Here, a classification scheme including nine different C-Q types was applied to a total of 87 Nordic streams draining mini-catchments (0.1-65 km2). The classification applied is based on a combination of stream export behaviour (dilution, constant, enrichment) and hysteresis rotational pattern (clock-wise, no rotation, anti-clockwise). The scheme has been applied to an 8-year data series (2010-2017) from small streams in Denmark, Sweden, and Finland on daily discharge and discrete nutrient concentrations, including nitrate (NO3-), total organic N (TON), dissolved reactive phosphorus (DRP), and particulate phosphorus (PP). The dominant nutrient export regimes were enrichment for NO3- and constant for TON, DRP, and PP. Nutrient hysteresis patterns were primarily clockwise or no hysteresis. Similarities in types of C-Q relationships were investigated using Principal Component Analysis (PCA) considering effects of catchment size, land use, climate, and dominant soil type. The PCA analysis revealed that land use and air temperature were the dominant factors controlling nutrient C-Q types. Therefore, the nutrient export behaviour in streams draining Nordic mini-catchments seems to be dominantly controlled by their land use characteristics and, to a lesser extent, their climate.

KW - Concentration-discharge relationship

KW - Export behaviour

KW - Hysteresis

KW - PCA

KW - Water quality

UR - http://www.scopus.com/inward/record.url?scp=85087546509&partnerID=8YFLogxK

U2 - 10.3390/w12061776

DO - 10.3390/w12061776

M3 - Journal article

AN - SCOPUS:85087546509

VL - 12

JO - Water

JF - Water

SN - 2073-4441

IS - 6

M1 - 1776

ER -