scholarly journals Merger of Betula tatewakiana (Betulaceae) from northern Japan with northeast Asian B. ovalifolia based on ploidy level

PhytoKeys ◽  
2020 ◽  
Vol 170 ◽  
pp. 83-91
Author(s):  
Yuki Shiotani ◽  
Tomoko Fukuda ◽  
Elena A. Marchuk ◽  
Ekaterina A. Petrunenko ◽  
Pavel V. Krestov ◽  
...  
Keyword(s):  
Ploidy Level ◽  
Northeast Asia ◽  
Global Perspective ◽  
Conservation Priority ◽  
Closely Related Species ◽  
Leaf Surfaces ◽  
Taxonomic Problem ◽  
Dwarf Birch ◽  
Northeast Asian ◽  
Northern Japan

It has been controversial whether Betula tatewakiana, a dwarf birch distributed in Hokkaido of northern Japan, is an endemic species or a synonym of B. ovalifolia broadly distributed in northeast Asia. The endemic hypothesis is based on the idea that B. tatewakiana is diploid while B. ovalifolia is tetraploid and that they are separated based on the ploidy level; however, no chromosome data have actually been published before. Resolving the taxonomic problem is crucial also in judging the conservation priority of B. tatewakiana in a global perspective. Our chromosome observation revealed that B. tatewakiana is tetraploid as well as B. ovalifolia. We also conducted morphological observations and clarified that B. tatewakiana is morphologically identical to B. ovalifolia in white hairs and dense resinous glands respectively on adaxial and abaxial leaf surfaces, in which they differ from closely related species in the same section Fruticosae. We conclude that the hypothesis that B. tatewakiana is a Hokkaido endemic based on the ploidy level is not supported and that B. tatewakiana should be merged with B. ovalifolia.

scholarly journals Merger of Betula tatewakiana (Betulaceae) from northern Japan to northeast Asian B. ovalifolia based on ploidy level

2019 ◽  
Author(s):  
Yuki Shiotani ◽  
Tomoko Fukuda ◽  
Elena A. Pimenova ◽  
Ekaterina A. Petrunenko ◽  
Pavel V. Krestov ◽  
...  
Keyword(s):  
Ploidy Level ◽  
Northeast Asia ◽  
Global Perspective ◽  
Morphological Observation ◽  
Closely Related Species ◽  
Leaf Surfaces ◽  
Taxonomic Problem ◽  
Dwarf Birch ◽  
Northeast Asian ◽  
Northern Japan

AbstractIt has been controversial whether Betula tatewakiana, a dwarf birch distributed in Hokkaido of northern Japan, is an endemic species or a synonym of B. ovalifolia broadly distributed in northeast Asia. The endemic hypothesis is based on the idea that B. tatewakiana is diploid while B. ovalifolia is tetraploid and that they are separated based on the ploidy level; however no chromosome data have actually been published before. Resolving the taxonomic problem is crucial also in judging the conservation priority of B. tatewakiana in a global perspective. Our chromosome observation revealed that B. tatewakiana is tetraploid as well as B. ovalifolia. Collaterally, we conducted morphological observation and clarified that B. tatewakiana is morphologically identical to B. ovalifolia in white hairs and dense resinous glands respectively on adaxial and abaxial leaf surfaces, based on which they are different from closely related species in the same section Fruticosae. We concluded that the hypothesis that B. tatewakiana is a Hokkaido endemic based on the ploidy level is not supported and that B. tatewakiana should be merged with B. ovalifolia.

Experiences in the Blue Economy Development of Northeast Asia Countries in the Context of Industrial Revolution 4.0 – Implication for Vietnam

2021 ◽  
Vol 12 (6) ◽  
pp. 2167-2175
Author(s):  
Dr. Pham Ngoc Tram Et al.
Keyword(s):  
Development Strategy ◽  
Industrial Revolution ◽  
Northeast Asia ◽  
National Development ◽  
Coastal Development ◽  
Asian Countries ◽  
Economic Sectors ◽  
Marine Economy ◽  
Global Concern ◽  
Northeast Asian

In the 21st century, in addition to the growing population and the depletion of land-based mineral and energy resources, the development of coastal economic sectors has become a new global concern.  Therefore, all marine countries in the world consider the development and use of marine resources an essential part of their national development strategy. The marine economy gradually stimulates competition among nations. This article is based on the synthesis of documents to learn and analyze experiences of coastal development in some Northeast Asian countries in the context of the Industrial Revolution 4.0. From there, draw reference lessons for Vietnam.

Language dispersals and the “Secondary Peoples’ Revolution”

2020 ◽  
pp. 806-814
Author(s):  
Mark James Hudson
Keyword(s):  
Bronze Age ◽  
Northeast Asia ◽  
Ryukyu Islands ◽  
State Control ◽  
Hunter Gatherers ◽  
Population Movements ◽  
The Ryukyu Islands ◽  
Northeast Asian ◽  
Cattle Husbandry ◽  
The Bronze Age

Population growth and demic diffusion help explain the early Neolithic expansions of agriculture and Transeurasian languages in Northeast Asia. By the Bronze Age, alluvial agrarian states had come to possess considerable political and economic dominance over their subjects in the civilizational centers of Eurasia. At the same time, however, Bronze Age economies offered new opportunities for trade and secondary expansion into areas outside state control. This chapter argues that the resulting population movements—here termed the “secondary peoples’ revolution”—were of great significance in the post-Neolithic dispersals of Transeurasian languages. Four examples are briefly discussed: steppe nomadic pastoralism, Sakha horse and cattle husbandry, northeast Asian hunter-gatherers, and agriculture associated with trade/piracy networks in the Ryukyu Islands.

Substantive Provisions of the East Asian Trilateral Investment Agreement and their Implications

2019 ◽  
pp. 222-242
Author(s):  
Won-Mog Choi
Keyword(s):  
Host Country ◽  
Dispute Settlement ◽  
East Asian ◽  
Northeast Asia ◽  
International Investment ◽  
Investment Climate ◽  
Investment Promotion ◽  
Investment Agreement ◽  
Northeast Asian ◽  
Regulatory Actions

The Korea–China–Japan Investment Promotion, Facilitation and Protection Agreement is the first treaty in the economic field that binds the three Northeast Asian countries together under a single legal instrument. The existence of effective dispute settlement procedures under the treaty will contribute to the creation of a favourable investment climate in the host country. Nevertheless, there have been fears about frivolous or vexatious claims that could inhibit legitimate regulatory actions by governments. How to compose an investment chapter of the Korea–China–Japan FTA that is being negotiated is a pressing demand for all in the region. Any pertinent answers to such a quest require a thorough comparison of the benefits and drawbacks of any development of relevant rules and governance. In the end, a quest for better international investment governance in Northeast Asia in the future requires sound evaluation of lessons from the past and present.

scholarly journals Northeast Asian Dust Transport: A Case Study of a Dust Storm Event from 28 March to 2 April 2012

Atmosphere ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 69 ◽  
Author(s):  
Purevsuren Tsedendamba ◽  
Jugder Dulam ◽  
Kenji Baba ◽  
Katsuro Hagiwara ◽  
Jun Noda ◽  
...  
Keyword(s):  
Lower Layer ◽  
Northeast Asia ◽  
Source Area ◽  
Northern China ◽  
Storm Event ◽  
Dust Transport ◽  
Lidar Measurements ◽  
Dust Storm Event ◽  
Northeast Asian ◽  
The Vertical Distribution

The distribution and transport of windblown dust that occurred in Northeast Asia from 28 March to 2 April 2012 was investigated. Data of particulate matter less than 10 micrometers (PM10) near the surface and light detection and ranging (LiDAR) measurements from the ground up to 18 km were used in the study. A severe dust event originated over southern Mongolia and northern China on 28 March 2012, and the widespread dust moved from the source area southeastward toward Japan over several days. Windblown dust reached Japan after two days from the originating area. LiDAR measurements of the vertical distribution of the dust were one to two km thick in the lower layer of the atmosphere, and increased with the increasing distance from the source area.

scholarly journals Radiocarbon and Archaeology in Japan and Korea: What has Changed Because of the Yayoi Dating Controversy?

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 421-427 ◽  
Author(s):  
Shin'ya Shoda
Keyword(s):  
Korean Peninsula ◽  
Northeast Asia ◽  
Radiocarbon Dates ◽  
South Korean ◽  
Asian Region ◽  
Archaeological Materials ◽  
Northeast Asian

Since the sensational 2003 announcement that pushed the start of the Yayoi period back by 500 yr, archaeologists working on 1st millennium BC material from northeast Asia have had to switch from the older short chronology to a new long chronology. However, this change need not apply to the entire northeast Asian region as China's chronology is tied to written records. The timeline of the Korean peninsula, intermediate between the Chinese and Japanese ones, needs to be reexamined. The chronology of the 1st millennium BC in the Korean peninsula is still in dispute, in part because many of the radiocarbon dates lack clear archaeological contexts. This paper shows that a reliable typological relationship observed in archaeological materials existed at this time linking northeast Asia from China to Japan. This paper includes absolute dates based on the initial AMS 14C measurements of charred crops from South Korean sites.

Role of Abnormally Enhanced MJO over the Western Pacific in the Formation and Subseasonal Predictability of the Record-Breaking Northeast Asian Heatwave in the Summer of 2018

2020 ◽  
Vol 33 (8) ◽  
pp. 3333-3349 ◽  
Author(s):  
Pang-Chi Hsu ◽  
Yitian Qian ◽  
Yu Liu ◽  
Hiroyuki Murakami ◽  
Yingxia Gao
Keyword(s):  
Real Time ◽  
Time Scale ◽  
Wave Train ◽  
Northeast Asia ◽  
Warm Pool ◽  
Western Pacific ◽  
Western Pacific Warm Pool ◽  
Pacific Warm Pool ◽  
Northeast Asian ◽  
The Western Pacific

AbstractIn the summer of 2018, Northeast Asia experienced a heatwave event that broke the existing high-temperature records in several locations in Japan, the Korean Peninsula, and northeastern China. At the same time, an unusually strong Madden–Julian oscillation (MJO) was observed to stay over the western Pacific warm pool. Based on reanalysis diagnosis, numerical experiments, and assessments of real-time forecast data from two subseasonal-to-seasonal (S2S) models, we discovered the importance of the western Pacific MJO in the generation of this heatwave event, as well as its predictability at the subseasonal time scale. During the prolonged extreme heat period (11 July–14 August), a high pressure anomaly with variability at the intraseasonal (30–90 days) time scale appeared over Northeast Asia, causing persistent adiabatic heating and clear skies in this region. As shown in the composites of MJO-related convection and circulation anomalies, the occurrence of this 30–90-day high anomaly over Northeast Asia was linked with an anomalous wave train induced by tropical heating associated with the western tropical Pacific MJO. The impact of the MJO on the heatwave was further confirmed by sensitivity experiments with a coupled GCM. As the western Pacific MJO-related components were removed by nudging prognostic variables over the tropics toward their annual cycle and longer time scales (>90 days) in the coupled GCM, the anomalous wave train along the East Asian coast disappeared and the surface air temperature in Northeast Asia lowered. The MJO over the western Pacific warm pool also influenced the predictability of the extratropical heatwave. Our assessments of two S2S models’ real-time forecasts suggest that the extremity of this Northeast Asian heatwave can be better predicted 1–4 weeks in advance if the enhancement of MJO convection over the western Pacific warm pool is predicted well.

Environmental Regime-Building in Northeast Asia: A Catalyst for Sustainable Regional Cooperation

2001 ◽  
Vol 1 (2) ◽  
pp. 31-61 ◽  
Author(s):  
Shin-wha Lee
Keyword(s):  
Regional Cooperation ◽  
Northeast Asia ◽  
The Political ◽  
Political Opportunity ◽  
Asian Countries ◽  
Environmental Cooperation ◽  
Environmental Regime ◽  
Independent Variable ◽  
Northeast Asian

There are two opposing views regarding the prospects of establishing a regional environmental regime in Northeast Asia. The first view considers the environment as a dependent variable of progress towards regionalism and suggest that regional environmental cooperation is impeded by political rivalries, historical animosities and economic disparities among Northeast Asian countries. The opposing view treats the environment as an independent variable of sustainable regionalism. The premise of this view is that inter-state environmental cooperation can become a confidence building measure that will pave the way for improved regional relations. Regardless of which view proves in the end to be right, the high environmental interdependence of countries in Northeast Asia makes it imperative to create a framework to promote greater cooperation within the region. Given that the region lacks institutions for region-wide dialogue and cooperation, the formation of an effective regional environmental regime will be a long-term process. However, the process itself is pivotal as it can increase dialogue and exchanges from which a regional environmental regime can evolve, and hopefully, if given the political opportunity, will promote security and peace in the region.

Three Futures: Global Geopolynomic Transition and the Implications for Regional Security in Northeast Asia

2005 ◽  
Vol 39 (4) ◽  
pp. 761-792
Author(s):  
BRENDAN HOWE
Keyword(s):  
International System ◽  
Winning Coalition ◽  
Northeast Asia ◽  
The United States ◽  
Regional Security ◽  
The Social ◽  
Intellectual Traditions ◽  
Political Entrepreneur ◽  
Theoretical Evidence ◽  
Northeast Asian

Future predictions in security studies tend to fall into two broad intellectual traditions, liberal modernist hypotheses, and structural-realist or geopolitical hypotheses. These two major schools of thought essentially agree on the rationality of participants, but disagree about the nature of the environment facing policymakers and thereby framing their decisions. This project considers theoretical, rational, and statistical models associated with these approaches, analyzes the available data for future projection with regard to the Northeast Asian sub-region, and introduces a third rational future based on the social construction of a regional geopolynomic community, with America as a political entrepreneur, her regional allies as a winning coalition, and China and Russia as partners for peace. The focus of this work is on the Northeast Asian subset of the international system, containing the countries of China, Japan, Mongolia, Russia, North and South Korea, and considering the undeniable role played by the United States in the region, although at times statistical and theoretical evidence forces representation of a larger constituency.

The Blind Men, the Elephant, and Regional Order in Northeast Asia: Towards a New Conceptualization

2015 ◽  
Vol 16 (4) ◽  
pp. 507-531
Author(s):  
SAM-SANG JO
Keyword(s):  
Northeast Asia ◽  
Analytical Tool ◽  
Empirical World ◽  
Rise Of China ◽  
Regional Order ◽  
Northeast Asian ◽  
The Rise Of China

AbstractNo theory seems to describe accurately and explain competently the new, unusual, and idiosyncratic Northeast Asian regional order phenomenon. It is because Northeast Asian specialists like the blind men have seen only one of the parts of the ‘Elephant’ or a part of what is taking place in Northeast Asia. This paper attempts to employ a new, more appropriate, more productive analytical tool to understand and navigate efficiently the Northeast Asian regional order. The main objective of this paper is ‘the rise of China and Northeast Asian regional order’, what it is and what is taking place in the empirical world when we say that something we call ‘the rise of China and Northeast Asian regional order’ is taking place.

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