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Correction to “Ecohydrological responses to rewetting of a highly impacted raised bog ecosystem”

2019; Wiley; Volume: 12; Issue: 2 Linguagem: Inglês

10.1002/eco.2034

1936-0592

Brenda D’Acunha, Sung‐Ching Lee, Mark S. Johnson,

Coastal wetland ecosystem dynamics

EcohydrologyVolume 12, Issue 2 e2034 CORRIGENDUMFree Access Correction to "Ecohydrological responses to rewetting of a highly impacted raised bog ecosystem" This article corrects the following: Ecohydrological responses to rewetting of a highly impacted raised bog ecosystem Brenda D'Acunha, Sung-Ching Lee, Mark S. Johnson, Volume 11Issue 1Ecohydrology First Published online: November 17, 2017 Brenda D'Acunha, Brenda D'AcunhaSearch for more papers by this authorSung-Ching Lee, Sung-Ching LeeSearch for more papers by this authorMark S. Johnson, Mark S. JohnsonSearch for more papers by this author Brenda D'Acunha, Brenda D'AcunhaSearch for more papers by this authorSung-Ching Lee, Sung-Ching LeeSearch for more papers by this authorMark S. Johnson, Mark S. JohnsonSearch for more papers by this author First published: 29 January 2019 https://doi.org/10.1002/eco.2034AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat We are providing this correction to clarify and correct several details as originally presented in D'Acunha, Lee, and Johnson (2018). Figure A in D'Acunha et al. (2018) incorrectly presented the locations of the wells and piezometers monitored for groundwater level by the City of Delta. While the geographic coordinates given in Table A of D'Acunha et al. (2018) correctly correspond to the groundwater level measurement locations, the markers in Figure A of D'Acunha et al. (2018) are shifted from their correct placement. We provide an updated figure below (Figure A) to correct this issue. We also wish to highlight that water level monitoring was conducted by the City of Delta, as noted in the Methods section and the Acknowledgements of D'Acunha et al. (2018). The methodology described in section 2.2 should have been specifically attributed to Howie et al. (2009). Also, this information was not conveyed in the figure legends of Figures 2 and 4 in D'Acunha et al. (2018), and we wish to emphasize that the authors of D'Acunha et al. (2018) were not involved in water level monitoring. The statement in D'Acunha et al. (2018) that indicated all water level measurements began in September 2005 is incorrect. Of the 11 piezometers used in D'Acunha et al. (2018), 6 have readings beginning in September 2005, one began in October 2005, and five began in August 2006. We summarize the starting times for each location in Table A of this Correction. We also note that the location identification nomenclature used for groundwater level measurements used by the City of Delta differs from that used in D'Acunha et al. (2018). Table A in this Correction provides a one-to-one correspondence of location codes used in D'Acunha et al. (2018) to the nomenclature used by the City of Delta and other agencies engaged in water level measurements. Figure AOpen in figure viewerPowerPoint Revised figure of the Burns Bog study area near Vancouver, Canada correcting Figure A of D'Acunha et al. (2018). The white area corresponds to the Burns Bog ecological area as outlined in the 1999 Burns Bog Ecosystem Review (Hebda et al., 2000). Some areas near the 1999 bog edge have since been converted to other uses (farms, industrial lands, and highways). Brown polygons correspond to areas of peat harvest reported in Hebda et al. (2000). Black dots indicate the locations of groundwater level measurements made by the City of Delta using the naming convention of D'Acunha et al. (2018). Further information on these locations including nomenclature utilized by the City of Delta is provided in Table A. Table A. Location information and date of first water level measurement by City of Delta Transect Location code D'Acunha et al. (2018) Location ID* Long.** Lat. First groundwater level reading* B B1 BB1 −122.952692 49.119093 15-Sep-2005 B B2 06–19 −122.949184 49.119037 3-Aug-2006 B B3 06–18 −122.944976 49.119035 3-Aug-2006 B B4 TH-13 −122.937041 49.119220 11-Oct-2005 C C1 05–10 −122.964412 49.113142 15-Sep-2005 C C2 06–16 −122.963333 49.110938 22-Aug-2006 C C3 06–15 −122.962156 49.108607 3-Aug-2006 E E1 05–08 −123.011374 49.111509 15-Sep-2005 E E2 05–06 −123.011332 49.108838 15-Sep-2005 E E3 05–04 −123.011345 49.106175 15-Sep-2005 E E4 05–02 −123.011345 49.105258 15-Sep-2005 * Location ID codes for Burns Bog piezometers and monitoring wells as provided to the authors by Sarah Howie, City of Delta. Water level measurements were made by City of Delta with varying dates of the start of measurements. ** Piezometer locations were provided by the City of Delta in UTM 10 N NAD83 coordinates (https://epsg.io/26910). These were converted to WGS84 decimal degree notation (https://epsg.io/4326)1. The statement in D'Acunha et al. (2018) that "Transects B and E were harvested during World War II" is incorrect. The position of three groundwater monitoring locations along Transect B (B1, B2, and B3) are adjacent to, but outside of, areas that experienced peat harvesting (Hebda, Gustavson, Golinski, & Calder (2000); Figure A). As these locations are 35 m south of the polygonal perimeter of an area defined as experiencing peat harvesting, the remote sensing products with 1 km (MODIS ET) and 250 m (MODIS NDVI) pixel resolutions overlap with areas for which peat was harvested. However, the influence of legacy peat harvesting on groundwater levels is difficult to assess for locations outside of harvest areas. Transect E is located perpendicular to a blocked perimeter drainage ditch in an area which has never had peat harvesting with Locations E3 and E4 near this blocked drainage ditch (Howie et al., 2009). Tree and shrub regrowth has been reported following the 2005 fire, which could be a significant factor driving the ET trends observed for Transect B using the MODIS MOD16A2 product. While it is not possible from the satellite record to determine the relative strengths of regrowth vs. rewetting as potential causal (and interacting) mechanisms leading to changes in ET, vegetative regrowth should be recognized as a potentially important ET component. Future research could use an isotopic approach to segregate ET into evaporation (E) and transpiration (T), where rewetting would presumably increase E for areas more proximal to the blocked ditches, while more and larger trees and shrubs would likely lead to increased T. It should also be noted that vegetative communities in Burns Bog are highly complex and variable over short distances in relation to micro-topography and other features. Remote sensing imagery aggregates optical characteristics of the entire plant community that occurs within each pixel. As such, we recognize the difficulty of identifying changes in vegetative communities from remote sensing imagery, particularly at the 250 m MODIS NDVI pixel size. We acknowledged this difficulty in the Discussion section of D'Acunha et al. (2018) and indicated that we were unable to assess the abundance of mosses using remotely sensed data for the transects. Rather, surveys and an inventory of vegetation cover are needed to fully assess composition of and changes within vegetative communities. Remote sensing data can help to identify areas that may be experiencing changes as screening tool to help plan for field-based measurements. The statement in the Conclusion section of D'Acunha et al. (2018) that ditch blocking was part of the restoration efforts by Metro Vancouver is incorrect. Ditch blocking has been carried out by the City of Delta since 2001. Finally, "Set" in Figure 3 caption, should be "Sept". 1 For transformation from WGS84 to UTM 10 N NAD83, please see https://epsg.io/transform#s_srs=4326&t_srs=26910 using coordinates from Table A and selecting to convert the decimal degree notation used in the table above to UTM 10 N NAD83 Northings and Eastings. REFERENCES D'Acunha, B., Lee, S.-C., & Johnson, M. S. (2018). Ecohydrological responses to rewetting of a highly impacted raised bog ecosystem. Ecohydrology, 11, e1922. https://doi.org/10.1002/eco.1922 Hebda, R. J., Gustavson, K., Golinski, K., & Calder, A. M. (2000). Burns Bog ecosystem review synthesis for Burns Bog, Fraser River Delta, South- western British Columbia, Canada. Victoria, B.C: Environmental Assessment Office. Howie, S., Whitfield, P. H., Hebda, R. J., Munson, T. G., Dakin, R. A., & Jeglum, J. K. (2009). Water table and vegetation response to ditch blocking: Restoration of a raised bog in southwestern British Columbia. Canadian Water Resources Journal, 34(4), 381– 392. https://doi.org/10.4296/cwrj3404381 Volume12, Issue2March 2019e2034 FiguresReferencesRelatedInformation