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Title of Journal: Estuaries and Coasts

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Abbravation: Estuaries and Coasts

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Springer-Verlag

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DOI

10.1002/cber.19200530918

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1559-2731

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The Legacy of Agricultural Reclamation on Channel

Authors: Graham K MacDonald Paula E Noel Danika van Proosdij Gail L Chmura
Publish Date: 2009/10/28
Volume: 33, Issue: 1, Pages: 151-160
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Abstract

We assess the status of channel networks and pools of two tidal salt marshes recovering from more than a century of agricultural reclamation on the Bay of Fundy Canada A process of largely unmanaged restoration occurred at these sites since abandonment of agricultural activities during the first half of the twentieth century Each recovering marsh was compared to a reference marsh that was never drained or ditched We field mapped channel networks at all marshes and used aerial photographs to map the preabandonment channel network at one of the sites The recovering marshes have hybrid channel networks that feature highly variable channel morphologies loss of original channels and incorporation of drainage ditches Although channel networks in recovering marshes integrate agricultural ditches the recovering marsh networks may not be substantially increased in length or density Our aerial photograph analysis shows that channel density at one of the recovering marshes is comparable to the preabandonment density but with reduced sinuosity Field mapping of permanent tidal pools on the lower Bay marshes revealed that pools cover 13 of the recovering marsh compared to ∼5 of the reference marsh This study demonstrates that these essential marsh features can be regained through restoration or simple abandonment of drainage infrastructureThe Natural Science and Engineering Research Council of Canada NSERC the Bay of Fundy Ecosystem Partnership and the Royal Canadian Geographic Society of Canada provided financial support for this project We are grateful to A Sabourin and S Byers who assisted with field mapping S Byers also provided many helpful suggestions regarding the design of the project We thank R Sengupta and G Baker for their technical advice concerning GIS methodologies We appreciate the comments from two anonymous reviewers that improved this manuscript

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  1. Activity, Abundance, and Diversity of Nitrifying Archaea and Denitrifying Bacteria in Sediments of a Subtropical Estuary: Bahía del Tóbari, Mexico
  2. Watershed Controls on the Geomorphology of Small Coastal Lagoons in an Active Tectonic Environment
  3. Estimates of Natural Salinity and Hydrology in a Subtropical Estuarine Ecosystem: Implications for Greater Everglades Restoration
  4. Recruitment of Estuarine-Dependent Nekton Through a New Tidal Inlet: the Opening of Packery Channel in Corpus Christi, TX, USA
  5. Nutrients and Abiotic Stress Interact to Control Ergot Plant Disease in a SW Atlantic Salt Marsh
  6. Trophic Consistency of Benthic Invertebrates Among Diversified Vegetational Habitats in a Temperate Coastal Wetland of Korea as Determined by Stable Isotopes
  7. Nursery Habitat Shifts in an Estuarine Ecosystem : Patterns of Use by Sympatric Catfish Species
  8. Organic Matter Sources Supporting Lower Food Web Production in the Tidal Freshwater Portion of the York River Estuary, Virginia
  9. Nematode Responses to the Invasion of Exotic Spartina in Mangrove Wetlands in Southern China
  10. Influence of Environmental Variables and Fishing Pressure on Bivalve Fisheries in an Inshore Lagoon and Adjacent Nearshore Coastal Area
  11. Impacts of SW Monsoon on Phytoplankton Community Structure Along the Western Coastal BOB: an HPLC Approach
  12. Deterioration of Sediment Quality in Seagrass Meadows ( Posidonia oceanica ) Invaded by Macroalgae ( Caulerpa sp.)
  13. Identification of Winter Flounder ( Pseudopleuronectes americanus ) Estuarine Spawning Habitat and Factors Influencing Egg and Larval Distributions
  14. A Model Study of the Estuarine Turbidity Maximum along the Main Channel of the Upper Chesapeake Bay
  15. Temperature Dependence of Oxygen Dynamics and Community Metabolism in a Shallow Mediterranean Macroalgal Meadow ( Caulerpa prolifera )
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  17. Response of an Arctic Sediment Nitrogen Cycling Community to Increased CO 2
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  22. Environmental Risk Evaluation System—an Approach to Ranking Risk of Ocean Energy Development on Coastal and Estuarine Environments
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