Forest Vegetation Cover in Tram Chim National Park in Southern Vietnam

Fixed-point photo monitoring supplemented by animal census data and climate monitoring potential has never been explored as a long-term monitoring tool for studying vegetation change in the arid and semi-arid national parks of South Africa. The long-term (1988–2010), fixed-point monitoring dataset developed for the Camdeboo National Park, therefore, provides an important opportunity to do this. Using a quantitative estimate of the change in vegetation and growth form cover in 1152 fixed-point photographs, as well as series of step-point vegetation surveys at each photo monitoring site, this study documented the extent of vegetation change in the park in response to key climate drivers, such as rainfall, as well as land use drivers such as herbivory by indigenous ungulates. We demonstrated the varied response of vegetation cover within three main growth forms (grasses, dwarf shrubs [< 1 m] and tall shrubs [> 1 m]) in three different vegetation units and landforms (slopes, plains, rivers) within the Camdeboo National Park since 1988. Sites within Albany Thicket and Dwarf Shrublands showed the least change in vegetation cover, whilst Azonal vegetation and Grassy Dwarf Shrublands were more dynamic. Abiotic factors such as drought and flooding, total annual rainfall and rainfall seasonality appeared to have the greatest influence on growth form cover as assessed from the fixed-point photographs. Herbivory appeared not to have had a noticeable impact on the vegetation of the Camdeboo National Park as far as could be determined from the rather coarse approach used in this analysis and herbivore densities remained relatively low over the study duration.Conservation implications: We provided an historical assessment of the pattern of vegetation and climatic trends that can help evaluate many of South African National Parks’ biodiversity monitoring programmes, especially relating to habitat change. It will help arid parks in assessing the trajectories of vegetation in response to herbivory, climate and management interventions.

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Composition of Vegetation Types and Structures in Gunung Ciremai National Park Forest

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/748/1/012009 ◽

2021 ◽

Vol 748 (1) ◽

pp. 012009

Author(s):

Agusyadi Ismail ◽

Yayan Hendrayana ◽

Dadan Ramadani ◽

Sri Umiyati

Keyword(s):

Plant Species ◽

Vegetation Structure ◽

National Park ◽

Stand Structure ◽

Complex Structure ◽

Forest Vegetation ◽

Intensity Data ◽

Vegetation Types ◽

Growth Phases ◽

High Level

Abstract Mount Ciremai National Park forest that area had been encroached. Because of that condition, stand structure especially the species composition and vegetation structure need to be researched. The aim of this research was to identify plant species and analyze forest vegetation structure. This research was conducted between March–April 2018 in the 15.500 ha area with 0.02% sampling intensity. Data was collected using grid line method that consisted of 34 sample plots with the 10 m distance between the plots and 20 m between the lines. The numbers of identified plant species at the research location were 43 species, classified by 10 families and 24 genera. Cinnamomum sintoc has a high level of dominance species. The forest vegetation was consisting by the different growth phases. The tree phase has the highest density of 3672 species/ha, while the seedling phase was lowest density of 1060 species/ha. The forest crown stratification were consisting of A, B, C, D and E stratum. The highest number of plants were from C strata for 4651 trees and the least from A strata with 25 trees with the highest tree was 42 m. Could be concluded that the composition of Mount Ciremai National Park forest have so many number of species and complex structure vegetation forest.

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Methods of GI modeling of biogenic substances removal to the Gulf of Finland from forest vegetation cover

Proceedings of the International conference “InterCarto/InterGIS” ◽

10.35595/2414-9179-2020-2-26-137-150 ◽

2020 ◽

Vol 26 (2) ◽

pp. 137-150

Author(s):

Alexey Osipov ◽

Georgy Osipov ◽

Vasily Kovyazin

Keyword(s):

Vegetation Cover ◽

Catchment Area ◽

Water Area ◽

Forest Vegetation ◽

Natural Vegetation ◽

Water Bodies ◽

Gulf Of Finland ◽

Economic Activities ◽

Biogenic Substances ◽

The Gulf Of Finland

Biogenic pollution of water bodies and their eutrophication is one of the most serious environmental problems of our time. One of the sources of water pollution with biogenic substances is forests, which belong to the background sources of biogenic load. Currently available methods for assessing the removal of nutrients from the forest vegetation cover do not provide the desired results, which causes an urgent need for their improvement. This article describes the method developed by the authors of geoinformation modeling of removal of biogenic substances from the forest vegetation cover to water bodies, taking into account the spatial distribution of vegetation in the catchment area, its species composition and absorption of biogenic substances during their migration. The Eastern part of the Gulf of Finland was adopted as the object of testing of the developed method. this is due to the fact that eutrophication processes are actively manifested within its water area. The volume of the background biogenic load on the Gulf of Finland, formed during the decomposition of the fall of the natural vegetation cover in the catchment area, was determined based on the specific removal of biogenic substances from plant communities and their absorption during migration “plant community — water object”. The total background biogenic load on the eastern part of the Gulf of Finland, formed as a result of decomposition of natural vegetation cover, was 170.21 t/year for the northern catchment for nitrogen, 12.14 t/year for phosphorus, and 207.31 t/year for the southern catchment for nitrogen , and 15.68 t/year for phosphorus. The data obtained do not contradict the results of other authors who study the background biogenic load on the Gulf of Finland. The method can be effectively used in the development of measures to reduce the nutrient load on water bodies and planning of economic activities in catchments.

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Taxonomic status of two populations of Bent-toed Geckos of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) with description of a new species from Nui Chua National Park, southern Vietnam

Zootaxa ◽

10.11646/zootaxa.4403.2.5 ◽

2018 ◽

Vol 4403 (2) ◽

pp. 307 ◽

Cited By ~ 1

Author(s):

OLIVIER S. G. PAUWELS ◽

ROMAN A. NAZAROV ◽

VLADIMIR V. BOBROV ◽

NIKOLAY A. POYARKOV

Keyword(s):

New Species ◽

National Park ◽

Species Complex ◽

Nature Reserve ◽

Taxonomic Status ◽

Southern Vietnam ◽

Number Of Species ◽

Two Populations ◽

A New Species

Based on genetic, morphological and chromatical comparisons we evaluate the taxonomic status of two southern Vietnamese forest-dwelling populations of the Cyrtodactylus irregularis species complex. We confirm the allocation of the population from Binh Chau—Phuoc Buu Nature Reserve (Ba Ria—Vung Tau Province) to C. cattienensis and we describe the population of Nui Chua National Park (Ninh Thuan Province) as Cyrtodactylus sangi sp. nov. This brings to 18 the number of species within the C. irregularis complex and to 41 the number of described Cyrtodactylus species recorded from Vietnam.

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Composition and structure algal сommunity of the Сát Tiên National Park, Southern Vietnam (first data)

Issues of modern algology (Вопросы современной альгологии) ◽

10.33624/2311-0147-2021-2(26)-78-85 ◽

2021 ◽

pp. 78-85

Author(s):

Elena M. Kezlya ◽

Anton M. Glushchenko ◽

Yevhen I. Maltsev ◽

Svetlana Y. Maltseva ◽

Evgeniy S. Gusev ◽

...

Keyword(s):

Species Composition ◽

Vertical Distribution ◽

Forest Soils ◽

National Park ◽

Soil Horizons ◽

Southern Vietnam ◽

South Vietnam ◽

Composition And Structure ◽

Cat Tien National Park

The report presents the results of a study of algae in forest soils in the Cat Tien National Park (South Vietnam) using 7 model sites as an example. The species composition of algae and their vertical distribution in the soil horizons have been characterized.

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Zetorchestes krisperi sp. nov. (Acari: Oribatida: Zetorchestidae) from Vietnam, with juvenile morphology and identification key to known species of the genus

Zootaxa ◽

10.11646/zootaxa.5057.4.5 ◽

2021 ◽

Vol 5057 (4) ◽

pp. 545-561

Author(s):

VASILIY B. KOLESNIKOV ◽

VLADISLAV D. LEONOV

Keyword(s):

New Species ◽

National Park ◽

Oribatid Mites ◽

Identification Key ◽

Diagnostic Features ◽

Southern Vietnam ◽

The Family ◽

The World ◽

A New Species

The description of a new species of oribatid mites (Oribatida) of the family Zetorchestidae—Zetorchestes krisperi sp. nov.—is proposed based on adult and tritonymph specimens collected from rainforest soil of Bi Dup-Nui Ba National Park (southern Vietnam). We also review the distinguishing characteristics for Zetorchestes species and present an identification key to Zetorchestes species of the world. Diagnostic features of Zetorchestes nymphs are discussed.

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Phasmarhabditis quinamensis sp. n. (Nematoda: Rhabditidae) from tropical terrestrial gastropods in southern Vietnam

Nematology ◽

10.1163/15685411-bja10126 ◽

2021 ◽

pp. 1-15

Author(s):

Elena S. Ivanova ◽

Sergei E. Spiridonov

Keyword(s):

Molecular Analysis ◽

National Park ◽

Sympatric Species ◽

Lsu Rdna ◽

Nominal Species ◽

Genital Papilla ◽

Gastropod Species ◽

Southern Vietnam ◽

Males And Females ◽

Cat Tien National Park

Summary Phasmarhabditis quinamensis sp. n. was recovered from several tropical terrestrial gastropod species collected in Cat Tien National Park in southern Vietnam with the snail, Sesara sp., designated as the type host. Phasmarhabditis quinamensis sp. n. is recognised by males and females with a lip region set off by the circle of six triangular low probolae, three bilobed, separated lips, stoma nearly as wide as long, the first genital papilla in males not incorporated into the bursa, the ensheathed dauer juveniles more than 1 mm long and with two circles of papillae at the head end and prominent amphidial apertures, a long filamentous tail and, when exsheathed, with a short, conical tail ending with two tiny spikes. The head structure of P. quinamensis sp. n. differentiates it from all nominal species of Phasmarhabditis. Phasmarhabditis quinamensis sp. n. is the second species of the genus found in Cat Tien National Park. The sympatric species P. meridionalis was also found during the present study. Phylogenetically, both species belong to different lineages within Phasmarhabditis. The molecular analysis based on partial sequences of LSU rDNA, and ITS rDNA regions showed P. kenyaensis to be the closest species to P. quinamensis sp. n.

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