Dragonets (Callionymidae) of soft bottoms from the coastal zone of southern Central Vietnam

2017 ◽  
Vol 57 (1) ◽  
pp. 45-52 ◽  
Author(s):  
A. M. Prokofiev
Keyword(s):  
Coastal Zone ◽  
Central Vietnam ◽  
Southern Central ◽  
Soft Bottoms

Anomalies in ovarian condition of manybar goatfish Parupeneus multifasciatus (Mullidae) from the coastal zone of south Central Vietnam

2014 ◽  
Vol 54 (1) ◽  
pp. 76-84 ◽  
Author(s):  
N. G. Emel’yanova ◽  
D. A. Pavlov ◽  
E. D. Pavlov ◽  
Luong Thi Bich Thuan ◽  
Vo Thi Ha
Keyword(s):  
Coastal Zone ◽  
Parupeneus Multifasciatus ◽  
South Central ◽  
Central Vietnam ◽  
Manybar Goatfish

scholarly journals Human Impacts on Estuarine Erosion-Deposition in Southern Central Vietnam: Observation and Hydrodynamic Simulation

2021 ◽  
Vol 13 (15) ◽  
pp. 8303
Author(s):  
Vu Tuan Anh ◽  
Pham Ba Trung ◽  
Kim-Anh Nguyen ◽  
Yuei-An Liou ◽  
Minh-Thu Phan
Keyword(s):  
Deposition Process ◽  
Southwest Monsoon ◽  
North Coast ◽  
Northeast Monsoon ◽  
Southern Coast ◽  
Erosion Processes ◽  
The North ◽  
Central Vietnam ◽  
Southern Central ◽  
Deposition Processes

This paper aims to identify the causes and sources of erosion and deposition at small estuaries in southern central Vietnam under human intervention. The jetty built at the Tam Quan river mouth (Binh Dinh Province, Vietnam) serves as the base for the study. After its completion at the end of 2009, the hydrodynamic and erosion-deposition processes in the region have been significantly altered. Inside the estuary, the waves are not influenced, but the currents are increased during the ebb tide period and decreased during the flood tide timeframe. During the southwest monsoon, the jetty could cause an increase in the deposition process in both frequency and area, whereas the erosion process tends to narrow the area and increase the frequency on the north coast. In contrast, both deposition and erosion processes are increased on the southern coast. About 5859 m3 of sediments are deposited in the channel gate mainly by local sources. During the northeast monsoon, both deposition and erosion processes are located over a narrow area with frequency increased on the north coast, whereas the deposition process is narrowed with higher frequency on the southern coast. The total amount of sediment deposited at the estuary is 56,446 m3, of which 74.2% is from the onsite erosion material, 15.8% from the river and 10% from the longshore transportation. Generally, due to mainly erosion-deposition processes, sediment volume is accumulated during the northeast monsoon with amount 9.6 times more than that the southwest monsoon. The erosion-deposition processes are contributed to by poor practical management and local human activities inland and in the coastal regions, as well as the natural situation, resulting in serious impacts on society, the economy and the environment. Hence, the governance of the erosion-deposition processes and sediment load in small estuaries appear to contribute to the master plan for the local sustainable development of society and the economy.

scholarly journals Phasmomantella gen. nov., a spectacular new genus of praying mantis from southern Central Vietnam (Mantodea, Mantidae, Deroplatyinae, Euchomenellini)

2018 ◽  
Author(s):  
Xavier H.C. Vermeersch
Keyword(s):  
National Park ◽  
New Genus ◽  
Distribution Map ◽  
Collection Site ◽  
Single Male ◽  
Praying Mantis ◽  
Male Specimen ◽  
Adult Females ◽  
Central Vietnam ◽  
Southern Central

The new genus Phasmomantella gen. nov. is created to accommodate the new species P. nuichuana gen. et sp. nov. described from five adult females from Núi Chúa National Park in southern Central Vietnam. A second species, Phasmomantella pallida (Roy, 2001) gen. et comb. nov., is transferred from Euchomenella where it was originally described based on a single male specimen from the Nha Trang region in the Khánh Hòa Province. Phasmomantella gen. nov. is placed in the tribe Euchomenellini of the subfamily Deroplatyinae. A comprehensive diagnosis and detailed descriptions are presented along with high-resolution photographs, measurements and a distribution map. The standardised measurements are illustrated and a new key is proposed for the tribe Euchomenellini. The unique biogeography and habitats of the collection site within Núi Chúa National Park are discussed in the light of possible endemism and importance for nature conservation.

scholarly journals CÁC GIẢI PHÁP ỔN ĐỊNH CỬA ĐẦM PHÁ VEN BIỂN MIỀN TRUNG VIỆT NAM

2019 ◽  
Vol 19 (1) ◽  
pp. 1-13
Author(s):  
Tran Duc Thanh ◽  
Vu Duy Vinh ◽  
Dang Hoai Nhon ◽  
Bui Van Vuong
Keyword(s):  
Human Impact ◽  
Coastal Zone ◽  
Coastal Erosion ◽  
Coastal Lagoons ◽  
Viet Nam ◽  
Stable Group ◽  
Natural Conditions ◽  
Water Supplies ◽  
Central Vietnam

Of the 14 inlets belonging to 12 coastal lagoons in the coastal zone of Central Vietnam, the unstable group consists of 4 inlets; the less stable group comprises 4 inlets and the relatively stable group has 6 inlets. For the feasibility and effectiveness, the constructions of stabilizing lagoonal inlets must be multi-purpose and multi-benefit, such as maintenance of ecosystems, opening to the sea for ships and boats, flood drainage and pollution limitation. They need to be combined with other development activities to reduce costs and increase benefits, for example in conjunction with seaports, fishing harbours, typhoon shelters and tourism... Solutions to stabilise the lagoonal inlets consist of 5 groups: Constructing groins for control of inlets; dredging lagoonal inlets and bottom; preventing coastal erosion outside the lagoons; stabilizing the lagoon banks and the surrounding sandy areas; regulating water supplies in the catchments into the lagoons. Depending on the natural conditions and degrees of human impact, the priority solution has been proposed for each lagoonal inlet.

Identity of Euploea orontobates Fruhstorfer, 1910 (Lepidoptera: Nymphalidae), a milkweed butterfly from Thailand and Vietnam

Zootaxa ◽  
2009 ◽  
Vol 1991 (1) ◽  
pp. 43-50
Author(s):  
A. L. MONASTYRSKII ◽  
R. I. VANE-WRIGHT
Keyword(s):  
South Eastern ◽  
Central Vietnam ◽  
Senior Synonym ◽  
Southern Central

Euploea orontobates Fruhstorfer, 1910, described from south-eastern Thailand (Si Racha district), is demonstrated to be a senior synonym of Euploea conbuom Saito & Inayoshi, 2006, from southern Central Vietnam. The relationships and biogeography of this rare butterfly are discussed, and presented together with comments on the principal mimicry complex among the Euploea species of Indochina.

scholarly journals SHORT REPORT: IN VIVO SENSITIVITY OF PLASMODIUM FALCIPARUM TO HALOFANTRINE IN SOUTHERN CENTRAL VIETNAM

2003 ◽  
Vol 69 (5) ◽  
pp. 553-554
Author(s):  
DOAN HANH NHAN ◽  
WALTER R. J. TAYLOR ◽  
NGUYEN DIEU THUONG ◽  
DAVID J. FRYAUFF ◽  
TRAN THI UYEN ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Short Report ◽  
Central Vietnam ◽  
Southern Central

Population dynamics of rice planthoppers, Nilaparvata lugens and Sogatella furcifera (Hemiptera, Delphacidae) in Central Vietnam and its effects on their spring migration to China

2016 ◽  
Vol 107 (3) ◽  
pp. 369-381 ◽  
Author(s):  
G. Hu ◽  
M.-H. Lu ◽  
H.A. Tuan ◽  
W.-C. Liu ◽  
M.-C. Xie ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Interspecific Competition ◽  
South China ◽  
Light Trap ◽  
Nilaparvata Lugens ◽  
Sogatella Furcifera ◽  
Source Areas ◽  
Early Migration ◽  
Central Vietnam ◽  
Southern Central

AbstractRice planthopper (RPH) populations of Nilaparvata lugens and Sogatella furcifera periodically have erupted across Asia. Predicting RPH population dynamics and identifying their source areas are crucial for the management of these migratory pests in China, but the origins of the migrants to temperate and subtropical regions in China remains unclear. In particular, their early migration to China in March and April have not yet been explored due to a lack of research data available from potential source areas, Central Vietnam and Laos. In this study, we examined the population dynamics and migratory paths of N. lugens and S. furcifera in Vietnam and South China in 2012 and 2013. Trajectory modeling showed that in March and April in 2012 and 2013, RPH emigrated from source areas in Central Vietnam where rice was maturing to the Red River Delta and South China. Early migrants originated from Southern Central Vietnam (14–16°N), but later most were from Northern Central Vietnam (16–19°N). Analysis of meteorological and light-trap data from Hepu in April (1977–2013) using generalized linear models showed that immigration increased with precipitation in Southern Central Vietnam in January, but declined with precipitation in Northern Central Vietnam in January. These results determined that the RPH originate from overwintering areas in Central Vietnam, but not from southernmost areas of Vietnam. Winter precipitation, rather than temperature was the most important factor determining the number of RPH migrants. Based on their similar population dynamics and low population densities in Central Vietnam, we further speculated that RPH migrate to track ephemeral food resources whilst simultaneously avoiding predators. Migrations do not seem to be initiated by interspecific competition, overcrowding or host deterioration. Nevertheless, S. furcifera establishes populations earlier than N. lugens South China, perhaps to compensate for interspecific competition. We provide new information that could assist with forecasting outbreaks and implementing control measures against these migratory pests.

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