Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Burrowing Behavior of a Deposit Feeding Bivalve Predicts Change in Intertidal Ecosystem State
Compton, T.J.; Bodnar, W.; Koolhaas, A.; Dekinga, A.; Holthuijsen, S.; Ten Horn, J.; McSweeney, N.; van Gils, J.A.; Piersma, T. (2016). Burrowing Behavior of a Deposit Feeding Bivalve Predicts Change in Intertidal Ecosystem State. Front. Ecol. Evol. 4: 19. https://dx.doi.org/10.3389/fevo.2016.00019
In: Frontiers in Ecology and Evolution. Frontiers Media: Lausanne. ISSN 2296-701X; e-ISSN 2296-701X, meer
|   |
| Author keywords |
asset-protection principle; bivalves; ecosystem functioning; functional traits; overfishing; Tellinidae |
| Auteurs | | Top |
- Compton, T.J.
- Bodnar, W.
- Koolhaas, A.
|
- Dekinga, A.
- Holthuijsen, S.
- Ten Horn, J.
|
- McSweeney, N.
- van Gils, J.A.
- Piersma, T.
|
| Abstract |
Behavior has a predictive power that is often underutilized as a tool for signaling ecological change. The burrowing behavior of the deposit feeding bivalve Macoma balthica reflects a typical food-safety trade-off. The choice to live close to the sediment surface comes at a risk of predation and is a decision made when predation danger, food intake rates or future fitness prospects are low. In parts of the Dutch Wadden Sea, Macoma populations declined by 90% in the late 1990s, in parallel with large-scale mechanical cockle-dredging activities. During this decline, the burrowing depth of Macoma became shallow and was correlated with the population decline in the following year, indicating that it forecasted population change. Recently, there has been a series of large recruitment events in Macoma. According to the food-safety trade-off, we expected that Macoma should now live deeper, and have a higher body condition. Indeed, we observed that Macoma now lives deeper and that living depth in a given year forecasted population growth in the next year, especially in individuals larger than 14 mm. As living depth and body condition were strongly correlated in individuals larger than 14 mm, larger Macoma could be living deeper to protect their reproductive assets. Our results confirmed that burrowing depth signals impending population change and, together with body condition, can provide an early warning signal of ecological change. We suggest that population recovery is being driven by improved intertidal habitat quality in the Dutch Wadden Sea, rather than by the proposed climate-change related effects. This shift in ecosystem state is suggested to include the recovery of diatom habitat in the top layer of the sediment after cockle-dredging ended. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
