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Reply to Carstensen, J., Telford, R.J. and Birks, H.J.B. (2013) Diatom flickering prior to regime shift

Reply to Carstensen, J., Telford, R.J. and Birks, H.J.B. (2013) Diatom flickering prior to regime shift
Reply to Carstensen, J., Telford, R.J. and Birks, H.J.B. (2013) Diatom flickering prior to regime shift
Some issues have been raised with regard to our paper, by Carstensen et al. In terms of our data processing, we were aware from the outset of the problems of unevenly spaced temporal data and sediment dating errors. We also wanted to duplicate, as far as possible, the methods published previously that had been used to identify early warning signals in palaeoenvironmental data (for example, ref. 3). Thus, we applied two standard smoothing functions (exponential and Gaussian kernel) to interpolated and non-interpolated (original) diatom data, expressed as three statistical indices (detrended correspondence analysis (DCA), Hill’s diversity index N2 (HDI) and correspondence analysis), using different sliding-window sizes and the two-standard-deviation range of dates for each sample.
0028-0836
E12-E13
Wang, Rong
fd4ca2d0-78f2-40c2-aad1-355e7f3f3022
Dearing, John A.
dff37300-b8a6-4406-ad84-89aa01de03d7
Langdon, Peter G.
95b97671-f9fe-4884-aca6-9aa3cd1a6d7f
Zhang, Enlou
53b50c45-bb12-4d5f-86e4-e656d44bcfa1
Yang, Xiangdong
7ecb5c8e-22cb-4f65-829d-8b3442dc6529
Dakos, Vasilis
eb3965f9-38da-4633-86c8-c616f91b0a49
Scheffer, Marten
301152fb-c43d-4e06-85f3-e9fb9bfa4ba2
Wang, Rong
fd4ca2d0-78f2-40c2-aad1-355e7f3f3022
Dearing, John A.
dff37300-b8a6-4406-ad84-89aa01de03d7
Langdon, Peter G.
95b97671-f9fe-4884-aca6-9aa3cd1a6d7f
Zhang, Enlou
53b50c45-bb12-4d5f-86e4-e656d44bcfa1
Yang, Xiangdong
7ecb5c8e-22cb-4f65-829d-8b3442dc6529
Dakos, Vasilis
eb3965f9-38da-4633-86c8-c616f91b0a49
Scheffer, Marten
301152fb-c43d-4e06-85f3-e9fb9bfa4ba2

Wang, Rong, Dearing, John A., Langdon, Peter G., Zhang, Enlou, Yang, Xiangdong, Dakos, Vasilis and Scheffer, Marten (2013) Reply to Carstensen, J., Telford, R.J. and Birks, H.J.B. (2013) Diatom flickering prior to regime shift. Nature, 498, E12-E13. (doi:10.1038/nature12273).

Record type: Article

Abstract

Some issues have been raised with regard to our paper, by Carstensen et al. In terms of our data processing, we were aware from the outset of the problems of unevenly spaced temporal data and sediment dating errors. We also wanted to duplicate, as far as possible, the methods published previously that had been used to identify early warning signals in palaeoenvironmental data (for example, ref. 3). Thus, we applied two standard smoothing functions (exponential and Gaussian kernel) to interpolated and non-interpolated (original) diatom data, expressed as three statistical indices (detrended correspondence analysis (DCA), Hill’s diversity index N2 (HDI) and correspondence analysis), using different sliding-window sizes and the two-standard-deviation range of dates for each sample.

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More information

e-pub ahead of print date: 26 June 2013
Published date: 27 June 2013
Organisations: Palaeoenvironment Laboratory (PLUS)

Identifiers

Local EPrints ID: 353996
URI: http://eprints.soton.ac.uk/id/eprint/353996
ISSN: 0028-0836
PURE UUID: 6b9f2c2a-72a3-4d43-96c8-b2c2824db161
ORCID for John A. Dearing: ORCID iD orcid.org/0000-0002-1466-9640
ORCID for Peter G. Langdon: ORCID iD orcid.org/0000-0003-2724-2643

Catalogue record

Date deposited: 28 Jun 2013 10:24
Last modified: 15 Mar 2024 03:19

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Contributors

Author: Rong Wang
Author: John A. Dearing ORCID iD
Author: Enlou Zhang
Author: Xiangdong Yang
Author: Vasilis Dakos
Author: Marten Scheffer

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