Stream biogeochemical and suspended sediment responses to permafrost  degradation in stream banks in Taylor Valley, Antarctica

Gooseff, Michael N.; Van Horn, David; Sudman, Zachary; McKnight, Diane M.; Welch, Kathleene A.; Lyons, William B.

doi:https://doi.org/10.5194/bg-13-1723-2016

Articles | Volume 13, issue 6

https://doi.org/10.5194/bg-13-1723-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Freshwater ecosystems in changing permafrost landscapes

https://doi.org/10.5194/bg-13-1723-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 6

Research article

|

21 Mar 2016

Research article |

| 21 Mar 2016

Stream biogeochemical and suspended sediment responses to permafrost degradation in stream banks in Taylor Valley, Antarctica

Michael N. Gooseff, David Van Horn, Zachary Sudman, Diane M. McKnight, Kathleene A. Welch, and William B. Lyons

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Final revised paper (published on 21 Mar 2016)
Preprint (discussion started on 08 Sep 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C6519: 'review for bgd-12-14773-2015', Anonymous Referee #1, 14 Oct 2015
- AC C8367: 'Reply to Reviewer #1 comments', Michael Gooseff, 09 Dec 2015
RC C7059: 'Review of 'Biogeochemical and suspended sediment responses to permafrost degradation in stream banks in Taylor Valley, Antarctica'', Anonymous Referee #2, 26 Oct 2015
- AC C8369: 'Reply to Reviewer #2', Michael Gooseff, 09 Dec 2015

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (Editor review) (14 Dec 2015) by Jorien Vonk

AR by Michael Gooseff on behalf of the Authors (03 Feb 2016) Author's response Manuscript

ED: Publish as is (17 Feb 2016) by Jorien Vonk

AR by Michael Gooseff on behalf of the Authors (27 Feb 2016)

Short summary

The landscape of the McMurdo Dry Valleys, Antarctica has been considered quite stable. In 2012, we discovered extensive permafrost degradation along several km of Crescent Stream. Here we document the responses to water quality, specifically changes to dissolved major ion and suspended sediment characteristics. Stream nitrate concentrations were greater than observed in the stream over the previous ~ 20 years, suggesting potentially significant impacts for stream and downstream lake ecosystems.