The Ostracoda of the Sekisei-sho area, Ryukyu Islands, Japan: a preliminary report on ostracods from coral reefs in the Ryukyu Islands

Tabuki, Ryoichi

doi:10.1007/978-94-009-1838-2_28

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…The open-water taxa Cytherella , Paranesidea , Neonesidea , Xestoleberis , and Loxoconcha cf. japonica are known to populate the shallow-marine, open-reef environments in this region (Tabuki and Nohara 1990; Tabuki and Hanai 1999) and tend to show a gradual decrease in relative abundance for the past 7 Kyr in the cores studied, with the exception of Neonesidea . There are many undescribed Neonesidea species found in the cores (Supplementary Table 1), and this different trend in the occurrence of Neonesidea compared with other “open-water taxa” may indicate that many of the undescribed Neonesidea species in the cores are cave-adapted species.…”

Section: Resultsmentioning

confidence: 97%

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

et al. 2017

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A submarine cave is a unique environment that is dark, food limited, semi-isolated from the outside, and sheltered from wave action. However, our knowledge of the long-term change in submarine-cave ecosystems remains limited. We document here the community-scale responses toward long-term change in a submarine cave, Daidokutsu in Okinawa in southern Japan. Using both metazoans (ostracods and bivalves) and protozoans (larger benthic foraminiferans) in two sediment cores obtained from the cave, we reconstruct the faunal and diversity changes of the past 7 Kyr. All taxonomic groups showed long-term, gradual linear change of faunal composition from predominantly open-water taxa to predominantly cave taxa, and ostracods showed short-term variability of species diversity. The long-term faunal trend probably reflects gradual isolation of the cave ecosystem due to coral reef development (i.e., development of the cave ceiling) during periods of the Holocene transgression and subsequent sea-level highstand. The short-term diversity changes show substantial similarity to centennial- to millennial-scale Holocene Asian monsoon variability. Ostracod species diversity peaks tend to correspond with periods of strong East Asian winter monsoons. The results indicate that limestone submarine-cave ecosystems, an important cryptic habitat, developed gradually during the Holocene and may be sensitive to rapid climate changes.

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Section: Resultsmentioning

confidence: 97%

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

et al. 2017

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“…Across the circumtropical belt, the central Indo-Pacific receives the most attention for its diverse reefal ostracods, with pioneering studies identifying distinct faunas associated with depth habitats from the shallow intertidal to deep reefal zones (Whatley and Watson, 1988;Babinot and Degaugue-Michalski, 1996). Apart from bathymetry, the distribution of reefal ostracods seems also related to benthic community type (coral reefs versus seagrass/algal beds), sediment type (i.e., sandy versus muddy deposits), in addition to local hydrology (i.e., exposure to wave energy) (Weissleader et al, 1989;Whatley and Watson, 1988;Babinot and Degaugue-Michalski, 1996;Tabuki, 1990Tabuki, , 1987. However, most of these works are confined to small geographic areas and based on limited (sub)fossil materials.…”

Section: Introductionmentioning

confidence: 99%

“…CC BY 4.0 License. a lesser degree, while quantitative assessments of biodiversity are largely lacking (Tabuki, 1987(Tabuki, , 1990Mostafawi et al, 2005). The highest species richness (S=74) was reported for a reef slope environment in Pulau Seribu, Java (Whatley and Watson, 1988) in contrast to much lower values at lagoons (S=27-42) (Babinot and Degaugue-Michalski, 1996;Weissleader et al, 1989) and reef flat (S=34) (Mostafawi et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Reefal ostracod assemblages from the Zanzibar Archipelago (Tanzania)

Tian,

Langer,

Yasuhara

et al. 2024

Preprint

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Abstract. Tropical reefs encompass tremendous biodiversity yet are imperiled by increasing natural and anthropogenic disturbances worldwide. Meiobenthic biotas on coral reefs, for example, ostracods, may experience substantial diversity loss and compositional changes even before being examined. In this study, we investigated the reefal ostracod assemblages from the highly diverse and productive ecosystem in Zanzibar Archipelago (Pemba, Zanzibar, and Mafia islands), Tanzania, to understand how their diversity and faunal structure vary in response to water depth, benthic community type, and human impacts. We characterized four distinct ostracod faunas associated with different benthic habitats, which were deep fore reefs, shallow fringing reefs, degraded fringing reefs, and algal covered intertidal flats. We identified typical ostracod associations, i.e., Bairdiidae versus Loxoconchidae-Xestoleberididae, that showed affinities to hard corals or algae on the reef platforms, respectively. Highest diversity was found on shallow fringing reefs where reefal and algal taxa exhibited maximum overlap of their distributional ranges, while the sand flats, mangrove, and marginal reefs within the intertidal zone had much lower diversity with high dominance of euryhaline taxa. Along the western coast of Zanzibar, coastal development likely resulted in a unique faunal composition and comparatively low diversity of ostracod assemblages among those in reefal habitats, in conjunction with overall reef ecosystem degradation. This study represents the first large-scale assessment of shallow-marine ostracods in the Zanzibar Archipelago. It lays a solid foundation for future research into the ecological significance of ostracods on coral reefs.

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“…Triebelina van den Bold, 1946 is an ornate bairdiid genus regarded by some authors (e.g. van Morkhoven 1963;Keij 1974Keij , 1976Teeter 1975;Tabuki & Nohara 1990) as being confined to tropical and subtropical, shallow marine environments, principally associated with coral reefs. Its Recent representative which lives in the Mediterranean, Triebelina raripila (G. W .…”

Section: Introductionmentioning

confidence: 99%

The distribution of <i>Triebelina raripila</i> and <i>Carinocythereis carinata</i> (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications

Szczechura

1998

J. Micropalaeontol.

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Abstract. Late Middle Miocene (Upper Badenian) strata of the Fore-Carpathian Depression of Poland yield a shallow-water ostracod fauna which contains the species Triebelina raripila (G. W. Müller, 1894) and Carinocythereis carinata (Roemer, 1838). The palaeobiogeographic distribution of the two main species suggests, that in the late Middle Miocene, Central Paratethys was still connected to the Mediterranean, although still separated from the Eastern Paratethys and from southeastern Eurasia. The continuous occurrence of Triebelina raripila and Carinocythereis carinata in the Mediterranean basins, from the Early Miocene to Recent, indicates that marine conditions existed throughout, thereby allowing them to survive the Late Miocene salinity crisis.

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The Ostracoda of the Sekisei-sho area, Ryukyu Islands, Japan: a preliminary report on ostracods from coral reefs in the Ryukyu Islands

Cited by 9 publications

References 4 publications

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

Reefal ostracod assemblages from the Zanzibar Archipelago (Tanzania)

The distribution of <i>Triebelina raripila</i> and <i>Carinocythereis carinata</i> (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications

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The Ostracoda of the Sekisei-sho area, Ryukyu Islands, Japan: a preliminary report on ostracods from coral reefs in the Ryukyu Islands

Cited by 9 publications

References 4 publications

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

Response of subtropical submarine-cave ecosystem to Holocene cave development and Asian monsoon variability

Reefal ostracod assemblages from the Zanzibar Archipelago (Tanzania)

The distribution of &lt;i&gt;Triebelina raripila&lt;/i&gt; and &lt;i&gt;Carinocythereis carinata&lt;/i&gt; (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications

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The distribution of <i>Triebelina raripila</i> and <i>Carinocythereis carinata</i> (Ostracoda) from the Middle Miocene of the Central Paratethys and their palaeogeographic implications