Hypoxia in mangroves: occurrence and impact on valuable tropical fish habitat

Dubuc, Alexia; Baker, Ronald; Marchand, Cyril; Waltham, Nathan J.; Sheaves, Marcus

doi:https://doi.org/10.5194/bg-16-3959-2019

Articles | Volume 16, issue 20

https://doi.org/10.5194/bg-16-3959-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Ocean deoxygenation: drivers and consequences – past, present...

https://doi.org/10.5194/bg-16-3959-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 20

Research article

|

15 Oct 2019

Research article |

| 15 Oct 2019

Hypoxia in mangroves: occurrence and impact on valuable tropical fish habitat

Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan J. Waltham, and Marcus Sheaves

Supplement

https://doi.org/10.5194/bg-16-3959-2019-supplement

Data sets

Dataset: fish assemblages and environmental parameters in Bourake A. Dubuc https://doi.org/10.25903/5cd4d312cbcfb

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Short summary

Little is known about how hypoxia influences mangrove fish assemblages. In situ video observations reveal species-specific avoidance strategies in response to developing hypoxia in a mangrove forest. Taxa commonly using mangroves could withstand hypoxia, while others usually associated with reef habitats were not recorded below 70 % saturation. These results suggest that hypoxia is an important factor shaping mangrove fish assemblages and could explain the low species richness usually observed.