Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 122, Issue -, Pages 196-200Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2016.10.010
Keywords
Macrofauna; Wrack edge; Beach amphipods and insects; Small-scale variation; Prince Edward Island
Funding
- UPEI
- Natural Sciences and Engineering Research Council, Canada (NSERC)
- Millennium Nucleus Center for the Study of Multiple Drivers on Marine Socioecological Systems (MINECON) [NC120086]
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The influence of wrack on sandy beach communities is well-documented but its effect on bare sediments located immediately beyond its edge has not yet been tested. This study aimed to explore these effects by surveying bare sediments located at increasing distances (0.5-2 m) from the wrack in five sandy beaches on Prince Edward Island, Atlantic Canada. In addition, we tested the influence of wrack with a field manipulation using wrack patches made up of rockweed bundles. The survey indicated that a modest but significant number of amphipods and beetles occupied bare sediments located 0.5 m from the edge of the wrack, but that those numbers dropped in sediments 1 m away and farther. The outcome of the field manipulation showed a similar pattern. Although small in spatial scale, our results have implications for the monitoring sandy beaches affected by scattered as well as heavy wrack input. (C) 2016 Elsevier Ltd. All rights reserved.
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