Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 488799
Title Demography of the ecosystem engineer Crassostrea gigas, related to vertical freef accretion and reef persistence
Author(s) Walles, B.; Mann, R.M.; Ysebaert, T.; Troost, K.; Herman, P.M.J.; Smaal, A.C.
Source Estuarine Coastal and Shelf Science 154 (2015). - ISSN 0272-7714 - p. 224 - 233.
DOI https://doi.org/10.1016/j.ecss.2015.01.006
Department(s) Wageningen Marine Research
Delta
Aquaculture and Fisheries
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) sea-level rise - introduced pacific oysters - wadden sea - chesapeake bay - population-dynamics - shell dissolution - eastern oyster - james river - virginica - habitats
Abstract Marine species characterized as structure building, autogenic ecosystem engineers are recognized worldwide as potential tools for coastal adaptation efforts in the face of sea level rise. Successful employment of ecosystem engineers in coastal protection largely depends on long-term persistence of their structure, which is in turn dependent on the population dynamics of the individual species. Oysters, such as-the Pacific oyster (Crassostrea gigas), are recognized as ecosystem engineers with potential for use in coastal protection. Persistence of oyster reefs is strongly determined by recruitment and shell production (growth), processes facilitated by gregarious settlement on extant shell substrate. Although the Pacific oyster has been introduced world-wide, and has formed dense reefs in the receiving coastal waters, the population biology of live oysters and the quantitative mechanisms maintaining these reefs has rarely been studied, hence the aim of the present work. This study had two objectives: (1) to describe the demographics of extant C. gigas reefs, and (2) to estimate vertical reef accretion rates and carbonate production in these oyster reefs. Three long-living oyster reefs (>30 years old), which have not been exploited since their first occurrence, were examined in the Oosterschelde estuary in the Netherlands. A positive reef accretion rate (7.0-16.9 mm year(-1) shell material) was observed, consistent with self-maintenance and persistent structure. We provide a framework to predict reef accretion and population persistence under varying recruitment, growth and mortality scenarios. (C) 2015 Elsevier Ltd. All rights reserved.
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