The Sediment Reworking of the Mud Shrimp <i>Laomedia</i> sp. (Crustacea: Laomediidae) with Tidal Conditions in the Intertidal Sediments of Gomso Bay, Korea
Although the thalassinidean mud shrimp <i>Laomedia</i> sp. is one of the most abundant species in the upper tidal flats along the west coast of Korea, little is known of its ecological characteristics and bioturbation effects on intertidal sediments. This study estimated the sediment rew...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/84cff7cedc174598b0eb371ad268a7ae |
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| Sumario: | Although the thalassinidean mud shrimp <i>Laomedia</i> sp. is one of the most abundant species in the upper tidal flats along the west coast of Korea, little is known of its ecological characteristics and bioturbation effects on intertidal sediments. This study estimated the sediment reworking rate (SRR) of <i>Laomedia</i> sp. by quantifying in situ sediments ejected from the burrows via direct entrapment and evaluated the effects of tidal conditions on the SRR. The amount of expelled sediments from individual burrows was significantly related to the duration of submergence, whereas SRR showed an increasing trend as elevation increased. The SRR of <i>Laomedia</i> sp. was estimated to be 40 g ind.<sup>−1</sup> d<sup>−1</sup> and the annual SRR of this species was 72.2 kg m<sup>−2</sup> yr<sup>−1</sup> based on the density in the study area, which is very high compared to other thalassinidean shrimp. These findings suggest that <i>Laomedia</i> sp. is an important bioturbator in intertidal sediments, and tidal conditions should be considered when evaluating the SRR of this species. |
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