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Are Fiddler Crabs Potentially Useful Ecosystem Engineers in Mangrove Wastewater Wetlands? Mari Poll Bull

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dc.creator Penha-Lopes, Gil P.
dc.creator Bartolini, Fabrizio
dc.creator Samwel Mchele Limbu
dc.creator Cannicci, Stefano
dc.creator Kristensen, Erik
dc.creator Paula, José
dc.date 2016-06-26T17:11:07Z
dc.date 2016-06-26T17:11:07Z
dc.date 2009
dc.identifier Penha-Lopes, G., Bartolini, F., Limbu, S., Cannicci, S., Kristensen, E. and Paula, J., 2009. Are fiddler crabs potentially useful ecosystem engineers in mangrove wastewater wetlands?. Marine Pollution Bulletin, 58(11), pp.1694-1703.
dc.identifier http://hdl.handle.net/20.500.11810/2692
dc.identifier 10.1016/j.marpolbul.2009.06.015
dc.description Full text can be accessed at http://www.sciencedirect.com/science/article/pii/S0025326X09002720
dc.description The effect of different organic-rich sewage concentration (0%, 20% and 60% diluted in seawater) and absence or presence of mangrove trees on the survival, bioturbation activities and burrow morphology of fiddler crabs species was assessed. After 6 months, males of both species always showed higher survival (80%) when compared to females (20%). Crabs inhabiting pristine conditions achieved higher survival (67–87%) than those living in sewage-exposed mesocosms (40–71%). At 60% sewage loading, fiddler crabs processed less sediment (34–46%) during feeding and excavated slightly more sediment (45– 80%) than at pristine conditions. While percent volume of the burrow chambers increased (13–66%) at contaminated mesocosms for both vegetation conditions, burrows were shallower (33%) in bare cells loaded with sewage. The results show that fiddler crabs presented moderate mortality levels in these artificial mangrove wetlands, but mainly in sewage impacted cells. However, they still function as ecosystem engineers through bioturbation activities and burrow construction.
dc.language en
dc.publisher Elsevier
dc.subject Sewage
dc.subject Survival
dc.subject Bioturbation
dc.subject Ecosystem engineer
dc.subject Fiddler crabs
dc.subject Mangroves
dc.title Are Fiddler Crabs Potentially Useful Ecosystem Engineers in Mangrove Wastewater Wetlands? Mari Poll Bull
dc.type Journal Article


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