Loading content, please wait..
loading..
Logo
Version 3.22
or
Publication Type J
Authors Bowron, T., N. Neatt, D. van Proosdij, J. Lundholm and J. Graham
Title Macro-Tidal Salt Marsh Ecosystem Response to Culvert Expansion
Source Restoration Ecology
Author Keywords Bay of Fundy GPAC protocol LiDAR nekton restoration monitoring RSET new-england sediment deposition vegetation recovery surface elevation restoration bay fundy estuary success europe
Abstract The purpose of this paper was to examine the vegetative, sedimentary, nekton and hydrologic conditions pre-restoration and the initial 2 years post-restoration at a partially restricted macro-tidal salt marsh site. Replacement of the culvert increased tidal flow by 88%. This was instrumental in altering the geomorphology of the site, facilitating the creation of new salt marsh pannes, expansion of existing pannes in the mid and high marsh zones, and expansion of the tidal creek network by incorporating relict agricultural ditches. In addition, the increase in area flooded resulted in a significant increase in nekton use, fulfilling the mandate of a federal habitat compensation program to increase and improve the overall availability and accessibility of fish habitat. The restoration of a more natural hydrological regime also resulted in the die-off of freshwater and terrestrial vegetation along the upland edge of the marsh. Two years post-restoration, Salicornia europea (glasswort) and Atriplex glabriuscula (marsh orache), were observed growing in these die-back areas. Similar changes in the vegetation community structure were not observed at the reference site; however, the latter did contain higher species richness. This study represents the first comprehensive, quantitative analysis of ecological response to culvert replacement in a hypertidal ecosystem. These data will contribute to the development of long-term data sets of pre- and post-restoration, and reference marsh conditions to determine if a marsh is proceeding as expected, and to help with models that are aimed at predicting the response of marshes to tidal restoration at the upper end of the tidal spectrum.
Author Address [van Proosdij, Danika] St Marys Univ, Dept Geog, Halifax, NS B3H 3C3, Canada. [Bowron, Tony; Neatt, Nancy; Graham, Jennie] CB Wetlands & Environm Specialists Inc, Bedford, NS B4A 4B1, Canada. [Lundholm, Jeremy] St Marys Univ, Dept Biol, Halifax, NS B3H 3C3, Canada. van Proosdij, D (reprint author), St Marys Univ, Dept Geog, 923 Robie St, Halifax, NS B3H 3C3, Canada. dvanproo@smu.ca
ISSN 1061-2971
ISBN 1061-2971
Publication Date May
Year Published 2011
Volume 19
Issue 3
Beginning Page 307-322
Digital Object Identifier (DOI) 10.1111/j.1526-100X.2009.00602.x
Unique Article Identifier WOS:000289893200003
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed