Paleobiogeographical implications of inner bay Ostracoda during the Late Pleistocene Shimosueyoshi transgression, central Japan, with significance of its migration and disappearance in eastern Asia

Irizuki, Toshiaki; Taru, Hajime; Taguchi, Kiminori; Matsushima, Yoshiaki

doi:10.1016/j.palaeo.2008.11.002

Cited by 31 publications

(10 citation statements)

References 41 publications

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“…This is because (i) longer time scales should include more extinctions and speciations; (ii) alpha (local) diversity may better reflect species coexistence, but beta, gamma, and latitudinally binned diversities reflect regional-scale diversity largely formed by the long-term dynamics of extinction and speciation; (iii) coastal taxa are influenced to a greater extent by geological time-scale events (e.g. sea-level changes, plate tectonics) (Renema et al, 2008;Irizuki et al, 2009) because of their narrow distribution along (often complex) coastlines in which isolation of local communities is easily induced by geological events. However, evolutionary dynamics may be less important in shaping present-day oceanic and deep-sea alpha diversity patterns.…”

Section: Potential Controlling Factors Of Deep-sea Biodiversitymentioning

confidence: 99%

Temperature impacts on deep‐sea biodiversity

2014

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Temperature is considered to be a fundamental factor controlling biodiversity in marine ecosystems, but precisely what role temperature plays in modulating diversity is still not clear. The deep ocean, lacking light and in situ photosynthetic primary production, is an ideal model system to test the effects of temperature changes on biodiversity. Here we synthesize current knowledge on temperature-diversity relationships in the deep sea. Our results from both present and past deep-sea assemblages suggest that, when a wide range of deep-sea bottom-water temperatures is considered, a unimodal relationship exists between temperature and diversity (that may be right skewed). It is possible that temperature is important only when at relatively high and low levels but does not play a major role in the intermediate temperature range. Possible mechanisms explaining the temperature-biodiversity relationship include the physiological-tolerance hypothesis, the metabolic hypothesis, island biogeography theory, or some combination of these. The possible unimodal relationship discussed here may allow us to identify tipping points at which on-going global change and deep-water warming may increase or decrease deep-sea biodiversity. Predicted changes in deep-sea temperatures due to human-induced climate change may have more adverse consequences than expected considering the sensitivity of deep-sea ecosystems to temperature changes.

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Section: Potential Controlling Factors Of Deep-sea Biodiversitymentioning

confidence: 99%

Temperature impacts on deep‐sea biodiversity

2014

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“…In Japan, clay material used for pottery manufacture, often contains ≤0.05 mass% of manganese (i.e., ≤0.065 mass% of MnO) . Generally, prehistorical potteries from the Kanto, Chubu, and Tohoku regions of Japan were mainly produced using the clay layer from the Shimosueyoshi terrace . The clay has ≤0.05 mass% of manganese concentration.…”

Section: Resultsmentioning

confidence: 99%

Provenance determination of prehistorical pottery from Oshima Island belonging to Izu islands (Tokyo, Japan) using X‐ray fluorescence spectrometry

et al. 2019

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A total of 41 pottery shards originating in the Jomon period (14000–300 BC) and Yayoi period (300 BC–250 AD) were excavated from the Shimotakabora site on Oshima Island of the Izu islands (Tokyo, Japan). X‐ray fluorescence spectrometry was used to determine the chemical composition (10 major oxides and 12 minor elements) of the potteries to identify the potteries' provenance, that is, local or nonlocal product. The calibration curves were drawn by synthetic standards prepared from a mixture of chemical reagents containing analytes, which presented good accuracy and reproducibility by analysis of the geochemical references. The pottery samples were classified by multivariate statistics such as principal component analysis and cluster analysis based on their chemical composition. Additionally, the X‐ray fluorescence results were compared with geochemical data from Oshima Island using scatter diagrams. The pottery provenance was identified by their classification. This provenance estimation indicates that 37 of the 41 potteries were brought to Oshima island from Japan's main island, Honshu, in the prehistoric age.

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“…Most of these dominant genera inhabit inner-shelf areas of the modern Japan Sea and Northwest Pacific (e.g. Ikeya and Cronin, 1993;Zhou, 1995;Kamiya et al, 2001;Ozawa and Kamiya, 2001;Ozawa, 2003Ozawa, , 2010Tanaka, 2008;Irizuki et al, 2009). Individuals of species in these genera accounted for approximately 80% of ostracod specimens in this assemblage, which was characterized by a high number of species and absolute abundance in sandy sediments, and a species diversity index of approximately 3 (Tables 1, 2, 4).…”

Section: Ostracod Assemblagementioning

confidence: 97%

“…Hemicythere kitanipponica (Tabuki, 1986 and muddy sediments around the Japanese Islands (Frydl, 1982;Ikeya and Itoh, 1991;Kamiya et al, 2001;Ozawa, 2003;Tanaka, 2008;Irizuki et al, 2009). Species in the genera Krithe, Propontocypris?, Cytherella, Falsobuntonia, Acanthocythereis, Robertsonites, and Palmenella are commonly or rarely found from several horizons ( Figure 5; Tables 1, 2).…”

Section: Occurrence Of Ostracodmentioning

confidence: 99%

Early to Middle Miocene Ostracods from the Yatsuo Group, Central Japan: Significance for the Bathyal Fauna between Japan Sea and Northwest Pacific Ocean During the Back-Arc Spreading

Ozawa

2016

Paleontological Research

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Paleobiogeographical implications of inner bay Ostracoda during the Late Pleistocene Shimosueyoshi transgression, central Japan, with significance of its migration and disappearance in eastern Asia

Cited by 31 publications

References 41 publications

Temperature impacts on deep‐sea biodiversity

Temperature impacts on deep‐sea biodiversity

Provenance determination of prehistorical pottery from Oshima Island belonging to Izu islands (Tokyo, Japan) using X‐ray fluorescence spectrometry

Early to Middle Miocene Ostracods from the Yatsuo Group, Central Japan: Significance for the Bathyal Fauna between Japan Sea and Northwest Pacific Ocean During the Back-Arc Spreading

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