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- W2014873838 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 358:115-124 (2008) - DOI: https://doi.org/10.3354/meps07304 Eelgrass seed dispersal via floating generative shoots in the Dutch Wadden Sea: a model approach Paul L. A. Erftemeijer1,*, Jan K. L. van Beek1, Caroline A. Ochieng2, Zwanette Jager3, Hans J. Los1 1WL/Delft Hydraulics, PO Box 177, 2600 MH Delft, The Netherlands 2Jackson Estuarine Laboratory, University of New Hampshire, 85 Adams Point Road, Durham, New Hampshire 03824, USA 3National Institute for Coastal and Marine Management/RIKZ, PO Box 207, 9750 AE Haren, The Netherlands *Email: paul.erftemeijer@wldelft.nl ABSTRACT: Potential long-distance dispersal of eelgrass seeds via floating generative shoots from a 256 ha meadow in the Ems Estuary (Wadden Sea) was studied by means of computer-simulation modelling. Flowering shoot density (peaking at 7.8 m–2) and total seed production (1094 million seeds yr–1) of this meadow was determined in the field and used as model input. Dispersal of floating generative shoots dislodged by increased water turbulence during autumn was modelled using a 3D transport model (Delft3D-WAQ). Transport of eelgrass seeds contained in floating reproductive shoots with the prevailing hydrodynamic regime revealed maximum dispersal distances of up to 130 km from the source of seed production. The effect of wind speed and direction on seed transport was assessed by applying a wind drag function (3% of wind speed) on surface currents in the model using actual wind data from 10 consecutive years (1993 to 2002). Main transport direction under average autumn wind conditions was northeastward. Easterly winds (occurring at an average frequency of 15%) were responsible for some westward transport of eelgrass seeds (at densities >0.2 seeds m–2) up to 20 km from the estuary. Westward eelgrass colonization of suitable areas in the Dutch Wadden Sea appears to be limited by seed supply due to transport limitations posed by the prevailing hydrodynamic regime. Extreme events, such as prolonged Eastern storms, might promote seed dispersal further westwards, allowing for natural recovery of eelgrass in this area; this theory is supported by observations of localized eelgrass patches up to 40 km west of the estuary. KEY WORDS: Seed dispersal · Zostera marina · Transport modelling · Wind effects · Recruitment limitation · Wadden Sea Full text in pdf format PreviousNextCite this article as: Erftemeijer PLA, van Beek JKL, Ochieng CA, Jager Z, Los HJ (2008) Eelgrass seed dispersal via floating generative shoots in the Dutch Wadden Sea: a model approach. Mar Ecol Prog Ser 358:115-124. https://doi.org/10.3354/meps07304 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 358. Online publication date: April 21, 2008 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2008 Inter-Research." @default.
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- W2014873838 title "Eelgrass seed dispersal via floating generative shoots in the Dutch Wadden Sea: a model approach" @default.
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