Articles | Volume 21, issue 2
Hydrol. Earth Syst. Sci., 21, 1149–1171, 2017
https://doi.org/10.5194/hess-21-1149-2017
Hydrol. Earth Syst. Sci., 21, 1149–1171, 2017
https://doi.org/10.5194/hess-21-1149-2017

Research article 23 Feb 2017

Research article | 23 Feb 2017

River water quality changes in New Zealand over 26 years: response to land use intensity

Jason P. Julian et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (18 Oct 2016) by Christian Stamm
AR by Jason Julian on behalf of the Authors (05 Nov 2016)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (14 Nov 2016) by Christian Stamm
RR by Anonymous Referee #1 (16 Dec 2016)
RR by Anonymous Referee #2 (21 Dec 2016)
ED: Publish subject to minor revisions (further review by Editor) (05 Jan 2017) by Christian Stamm
AR by Jason Julian on behalf of the Authors (22 Jan 2017)  Author's response    Manuscript
ED: Publish as is (25 Jan 2017) by Christian Stamm
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Short summary
New Zealand is a natural laboratory for investigating water quality responses to land use intensity because it has one of the highest rates of agricultural intensification globally over recent decades. We interpreted water quality state and trends (1989–2014) of 77 river sites across NZ. We show that the greatest long-term negative impacts on river water quality have been increased cattle densities and legacy nutrients from intensively managed grasslands and plantation forests.