Vegetation and climate histories between MIS 63 and 53 in the Early Pleistocene in central Japan based on plant macrofossil evidences

Momohara, Arata; Ueki, Takeyuki; Saito, Takehisa

doi:10.1016/j.quaint.2017.03.038

Cited by 15 publications

(6 citation statements)

References 23 publications

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“…The rich fossil records in Europe probably suggest a diversity center of the subfamily there during the past. In East Asia, fossil records of Rosoideae are mainly from Japan (e.g., Ozaki, 1991;Matsushita et al, 1994;Yabe, 2008;Momohara et al, 2016Momohara et al, , 2017Ito et al, 2017;Yamakawa et al, 2017). They are only sporadically distributed in China (Huang et al, 2015;Su et al, 2016), despite the modern diversity in this region.…”

Section: Contribution To the Fossil Record Of Rosoideaementioning

confidence: 99%

“…These fossil representatives are mainly confined to three genera, including Potentilla L., Rosa , and Rubus . Rubus , for example, has been recorded from more than 100 localities, with ages ranging from the Pleistocene to the middle Eocene (e.g., Chandler, ; Dorofeev, ; Tiffney, ; Meyer & Manchester, ; Mai, ; Bhandari et al, , ; Momohara et al, ). The other two genera, Potentilla and Rosa , also have an excellent fossil record (e.g., Becker, ; Dorofeev, ; Mai & Walther, ; Meyer & Manchester, ; Fyles et al, ; Mai, ; Kellner et al, ; Su et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Huang

Zhu

Momohara³

et al. 2018

J of Sytematics Evolution

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The subfamily Rosoideae Focke (Rosaceae) has a good fossil record in the Northern Hemisphere, but these fossil records are confined mainly to a few genera, whereas the majority, in particular those with herbaceous members, are still under‐represented. In this study, we describe new fruit fossils of Rosoideae, including Fragaria achenes and Rubus endocarps, from the late Pliocene of northwestern Yunnan, Southwest China. These fossils add new accounts to the fossil archive of Rosoideae and provide the first fossil record of Fragaria in East Asia. The new fossil findings provide a historical backdrop for the modern diversity and distribution of the subfamily in northwestern Yunnan, a topographically complex area accommodating a high diversity for many plant groups. Our Rubus fossils, in combination with other nearby coeval occurrences of the genus, suggest that Rubus was already establishing its modern diversity in northwestern Yunnan during the late Pliocene. This finding enriches our knowledge of the post‐Neogene diversification of flowering plants in northwestern Yunnan, which is thought to be largely driven by dramatic mountain uplifts and environmental complications associated with the southeastern extension of the Tibetan Plateau.

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Section: Contribution To the Fossil Record Of Rosoideaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Huang

Zhu

Momohara³

et al. 2018

J of Sytematics Evolution

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“…We reconstructed palaeotemperatures, including the coldest‐month mean temperature (CMMT), warmest‐month mean temperature (WMMT) and mean annual temperature (MAT), for the fossil sites, based on climatic requirements of modern equivalents of the fossil components. To estimate the climatic requirements of taxa, we referred to local flora and vegetation survey reports, in which the distribution of taxa is described and/or mapped on an altitudinal scale of at least 100 m, based on herbarium specimens and/or field observations (Momohara, Ueki, & Saito, 2017). Temperatures limiting the vertical distribution of taxa were estimated based on data obtained from the Japan Meteorological Agency (2002).…”

Section: Methodsmentioning

confidence: 99%

“…However, the present study site is surrounded by high‐altitude mountains, and we accordingly assume that the macrofossil assemblages in the sandy sediments also include those plant remains transported from vegetation in higher altitudes. As an alternative approach, we approximated palaeotemperatures at the site of fossil deposition based on the warmest value among the coldest limiting temperatures of the individual components, which is obtained for the most thermophilous taxon (Momohara, 1994; Momohara et al, 2017). Although the coldest value among the warmest limit temperatures of the assemblage components has also been used in this regard, it is considered to represent palaeotemperatures at the lowermost distribution limit of the most cold‐loving taxon, where temperatures are often lower than those at the site of fossil deposition (Momohara et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

A decrease in temperature during the late Middle Pleistocene interglacial stage (MIS 7.3) altered montane zone floral diversity: Plant macrofossil evidence from central Japan

2020

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Plant fossils from the Early and Middle Pleistocene have mainly been obtained from lowland sediments, and consequently, there is currently limited information on changes in montane zone vegetation prior to the last glacial stage. However, fossil plant assemblages occurring at high altitudes can be used to assess the influence of climate change on the vertical distribution of plants and vegetation. In this study, we analysed plant macrofossil assemblages from fluvial deposits in the upper Middle Pleistocene strata outcropping in a riverbed at 1160–1180 m a.s.l. in the southeastern foothills of Mt. Yatsugatake, central Japan. Ages of the assemblages were constrained by two widespread tephras that were detected above the interglacial peak of marine isotope stage (MIS) 7.3 (~212 ka). The annual mean temperature in the lower and middle sections of the profile was estimated to be warmer than that at present, based on the coldest temperatures limiting the distribution of Phytolacca japonica and Selaginella remotifolia, and the temperature decreased in the upper section. Since MIS 7.4, the fluctuation in plant altitudinal distribution has been exemplified by changes in the limits of S. remotifolia and Larix kaempferi distribution, and their coexistence at the same altitude varied depending on climate settings. Species diversity, estimated by rarefaction analysis of plant macrofossil assemblage composition, declined as temperatures decreased after the peak of MIS 7.3. Decreasing floral diversity during the subsequent cooling phase possibly coincided with a downward migration of the vegetation zone and extirpation of plants from the inland basin in central Japan.

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“…Beech dominance in fossil assemblages was reported from the Uonuma Group in south Niigata Prefecture and Kazusa Group in west Tokyo. From the lower Pleistocene Uonuma Group, F. crenata cupules occur commonly and abundantly (Niigata Fossil Plant Research Group [NFPRG] & Niigata Pollen Research Group [NPRG], 1983; Momohara et al, 2017). Although NFPRG and NPRG (1983) identified cupules from the lower part of the group to belong to F. microcarpa based on their size, F. microcarpa ‐type cupules have not been found (unpublished data of the authors).…”

Section: Evolution Of Modern Beech Forest Since the Late Pliocene To ...mentioning

confidence: 99%

Review: Biogeographic and environmental history of Fagus and beech‐dominant forest in Japan

Momohara

Ito

2023

Ecological Research

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There is a rich beech fossil record in Japan dating from the Paleogene to the Holocene, which allows for the continuous tracing of the evolutionary history of the genus and allows us to understand the environmental background that facilitated the genus to obtain a dominant state in present-day forests. In addition to the temperate climate, the oceanic climate was an important factor in controlling beech distribution and dominance in the forests in Japan. With the cooling climate, beech species began expanding their distribution in the Northern Hemisphere in the middle Eocene and appeared in Japan in the late middle Eocene. Beech species became dominant in forests in Japan during the Miocene along with the development of the oceanic climate by the opening of the Sea of Japan and with the strengthening of the monsoon. Fagus crenata appeared until the Late Pliocene and became dominant in forests in central Japan in the late Early Pleistocene coinciding with the onsetting inflow of the Tsushima Warm Current to the Sea of Japan in interglacial stages. During the full-glacial stages since the late Middle Pleistocene, the cold and dry climate caused by the strong winter monsoon limited the distribution of beeches into refugia at humid places, including the inland. During the deglaciation since ca 19 ka, the beech population began to grow and its distribution expanded, controlled by the development of the Tsushima Warm Current, as well as latitudinal and altitudinal temperature clines.

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Vegetation and climate histories between MIS 63 and 53 in the Early Pleistocene in central Japan based on plant macrofossil evidences

Cited by 15 publications

References 23 publications

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

A decrease in temperature during the late Middle Pleistocene interglacial stage (MIS 7.3) altered montane zone floral diversity: Plant macrofossil evidence from central Japan

Review: Biogeographic and environmental history of Fagus and beech‐dominant forest in Japan

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