Evaluation of the level of threat and protective classification of the vegetation of Makehe Forest in Sanjiangyuan Nature Reserve, west China

2007 ◽  
Vol 2 (2) ◽  
pp. 179-184 ◽  
Author(s):  
Dalin Zou ◽  
Youjun He ◽  
Qinwen Lin ◽  
Guofa Cui
Keyword(s):  
Nature Reserve ◽  
West China

Classification of woody-shrub vegetation of the forest-steppe complex of Privolzhskaya Upland

2009 ◽  
pp. 27-53
Author(s):  
A. Yu. Kudryavtsev
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Dominant Species ◽  
Large Scale ◽  
Nature Reserve ◽  
Vegetation Mapping ◽  
Vegetation Classification ◽  
Forest Steppe ◽  
Mapping Data

Diversity of plant communities in the nature reserve “Privolzhskaya Forest-Steppe”, Ostrovtsovsky area, is analyzed on the basis of the large-scale vegetation mapping data from 2000. The plant community classi­fication based on the Russian ecologic-phytocoenotic approach is carried out. 12 plant formations and 21 associations are distinguished according to dominant species and a combination of ecologic-phytocoenotic groups of species. A list of vegetation classification units as well as the characteristics of theshrub and woody communities are given in this paper.

scholarly journals Severe hypernatremia in children after surgical resection of hepatic echinococcosis: a rare and potentially fatal complication

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Kewei Li ◽  
Yijun Liu ◽  
Xiaolong Xie ◽  
Rongxing Zhou ◽  
Bo Xiang
Keyword(s):  
Alveolar Echinococcosis ◽  
Disease Free Survival ◽  
West China Hospital ◽  
Free Survival ◽  
West China ◽  
Neurologic Sequelae ◽  
Scolicidal Agent ◽  
Hepatic Echinococcosis ◽  
Disease Free

Abstract Background Using effective scolicidal agents intraoperatively is essential to lessen the recurrence rate of hepatic echinococcosis. However, severe hypernatremia may occur after hypertonic saline (HS) has been applied as the scolicidal agent. The aim of this study is to report on pediatric patients with severe hypernatremia after hepatic echinococcus surgery. Methods Patients who presented to West China Hospital between January 2010 and February 2017 were retrospectively analyzed. Children under 16 years with echinococcosis treated by resection were included in the study. Results A total of 26 children were enrolled in this study, including 16 boys and 10 girls with a median age of 8 (2–16). 24 (92.3 %) cases were cystic echinococcosis (CE) and two (7.7 %) were alveolar echinococcosis (AE). According to Clavien-Dindo classification of surgical complications, the complication rate of all 26 patients was 19.2 %, among which three cases belonged to Grade I, one to Grade III b and 1 to Grade IV. Two children encountered severe hypernatremia (sodium: 155.3 mmol/L and 190.0mmol/L). Data showed classic clinical features of severe hypernatremia: profound and persistent bradycardia, hypotension and coma. After treatment, they recovered well without any neurologic sequelae. All patients were followed up regularly for a median time of 38 months (range 4–89 months); the overall disease-free survival was 100.0 %. Conclusions HS irrigation of intra-abdominal echinococcosis may cause acute hypernatremia and severe consequences. Diagnostic suspicion and early intervention are vital tools for avoiding morbidity and mortality.

scholarly journals Pre-imaginal stages of the blowfly Protocalliphora falcozi in nests of the tree sparrow (Passer montanus)

2019 ◽  
Vol 21 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Viera Jánošková ◽  
Ivan Országh ◽  
Ján Jamriška ◽  
Martin Kopáni
Keyword(s):  
Nature Reserve ◽  
Instar Larva ◽  
Tree Sparrow ◽  
Passer Montanus ◽  
National Nature Reserve ◽  
First Instar ◽  
Initial Description ◽  
Third Instar Larvae

This paper offers the initial description ofthe first instar larva of Protocalliphora falcozi Séguy, 1928 (Diptera: Calliphoridae) and redescription of the second and third instar larvae and puparium, as well as distinction between P. falcozi and its relative P. azurea Fallén (Diptera: Calliphoridae). The material was sampled in the National Nature Reserve Šúr (SW Slovakia) from nests of the tree sparrow (Passer montanus), which has not previously been classified as a host of P. falcozi. Knowledge of diagnostically relevant characterics to determine bird blowfly larvae and puparia will undoubtedly contribute to the current accepted phylogeny and classification of the genus Protocalliphora.

A phytosociological classification of the Rustenburg Nature Reser ve

Bothalia ◽  
1975 ◽  
Vol 11 (4) ◽  
pp. 561-580 ◽  
Author(s):  
B. J. Coetzee
Keyword(s):  
South Africa ◽  
Nature Reserve ◽  
Vegetation Types ◽  
Habitat Features ◽  
Community Types

I he vegetation of the Rustenburg Nature Reserve, situated on the Magaliesberg in Acocks’s (1953) Sour Bushveld veld Type ot South Africa, is classified by the Braun-Blanquet Method. Five major vegetation types, including mam subtypes, basic community types, variations and sub-variations are described floristically, physiognomically and in terms of habitat features. The vegetation is mapped at community tvpe and variation level, at a scale of 1 : 30 000.

Nutrient fluxes in bulk precipitation, throughfall and stemflow in montane subtropical moist forest on Ailao Mountains in Yunnan, south-west China

2002 ◽  
Vol 18 (4) ◽  
pp. 527-548 ◽  
Author(s):  
Wenyao Liu ◽  
John E. D. Fox ◽  
Zaifu Xu
Keyword(s):  
Nature Reserve ◽  
Base Cation ◽  
Mineral Elements ◽  
Bulk Precipitation ◽  
Total N ◽  
West China ◽  
South West ◽  
Moist Forest ◽  
Net Flux ◽  
Ailao Mountain

A study of nutrient movement through rainfall, throughfall and stemflow, as well as epiphytic bryophyte (moss and liverwort) biomass and its effect on nutrient composition of stemflow, was conducted for 2 y in subtropical montane moist forest (Lithocarpus–Castanopsis association) at Xujiaba, Ailao Mountain National Nature Reserve, Yunnan, south-west China. Base cation and fluxes were increased in throughfall, while NH4+-N and NO3--N were reduced relative to precipitation. Annual throughfall inputs of N, P, Ca and S were mainly from precipitation, while most K and two-thirds of Mg throughfall input was due to canopy leaching. Input of Na in the precipitation and throughfall was low in this forest. Net flux (throughfall flux minus bulk precipitation) and deposition ratios (ratio of throughfall flux to bulk precipitation flux) were in the low part of the range reported for other tropical montane rain forests. The throughfall data for this forest reveal generally low cycling rates for mineral elements. Abundant epiphytic bryophytes on bole bark affected the chemical composition of stemflow by selective uptake or release of elements. Relative to trees without epiphytic bryophytes, the annual amounts of total N, NH4+-N, Mg, Na and SO42--S were enhanced, while NO3--N, K, P and Ca were depleted in stemflow. Contributions of N from nitrogen-fixing organisms are likely to be constrained by low temperatures.

A phyt osociological classification of the vegetation of the Jack Scott Nature Reserve*

Bothalia ◽  
1974 ◽  
Vol 11 (3) ◽  
pp. 329-347 ◽  
Author(s):  
B. J. Coetzee
Keyword(s):  
Soil Texture ◽  
Woody Plants ◽  
Nature Reserve ◽  
Floristic Composition ◽  
Climatic Variation ◽  
Slope Aspect ◽  
Management Units ◽  
Habitat Features ◽  
Table Method

The vegetation of the Jack Scott Nature Reserve in the Central Bankenveld Veld Type is classified chiefly by the Braun-Blanquet Table Method. Habitat features, physiognomy, total floristic composition, differentiating species, woody plants and prominent grasses and forbs are presented for each community. Characterizing habitat features, in order of importance for the communities, are: exposure, soil texture, geology, slope, aspect, degree of rockiness and previous ploughing. The classification correlates well with the major physiographic and climatic variation in the Reserve and generally does not cut across main physiognomic types. The communities are potentially homogeneous management units.

scholarly journals The phytosociology of the Vermaaks, Marnewicks and Buffelsklip valleys of the Kammanassie Nature Reserve, Western Cape

Koedoe ◽  
2005 ◽  
Vol 48 (1) ◽  
Author(s):  
G. Cleaver ◽  
L.R. Brown ◽  
G.J. Bredenkamp
Keyword(s):  
Large Scale ◽  
Management Practices ◽  
Nature Reserve ◽  
Western Cape ◽  
Groundwater Abstraction ◽  
Ecological Processes ◽  
Vegetation Surveys ◽  
Baseline Information

Long-term conservation ecosystems require a broader understanding of the ecological processes involved. Because ecosystems react differently to different management practices, it is important that a description and classification of the vegetation of an area are completed. A vegetation survey of the valley areas of the Kammanassie Nature Reserve was undertaken as part of a larger research project to assess the environmental impacts of large-scale groundwater abstraction from Table Mountain Group aquifers on ecosystems in the reserve. From a TWFNSPAN classification, refined by Braun-Blanquet procedures, 21 plant communities, which can be grouped into 13 major groups, were identified. A classification and description of these communities, as well as a vegetation map of the different areas are presented. Associated gradients in habitat w ere identified by using an ordination algorithm (DECORANA). The diagnostic species as well as the prominent and less conspicuous species of the tree, shrub, forb and grass strata are outlined. The study also resulted in a total number of 481 species being identified and the discovery of a new Erica species. These vegetation surveys and descriptions provide baseline information for management purposes and that allows monitoring as well as similar surveys to be conducted in future.

scholarly journals ANALISIS HUBUNGAN KETINGGIAN TEMPAT DENGAN JENIS DAN KLASIFIKASI FLORA DI WILAYAH HUTAN SIBOLANGIT

2017 ◽  
Vol 6 (2) ◽  
pp. 124
Author(s):  
Rena Saputri Hilaria Sitanggang ◽  
Khairul Wahyudi ◽  
Pastuti Tafonao
Keyword(s):  
Data Collection ◽  
Nature Reserve ◽  
Field Survey ◽  
Survey Methods ◽  
Research Area ◽  
Physical Characteristics ◽  
Forest Park ◽  
Know How ◽  
Valid Data

Daerah penelitian adalah Cagar Alam Sibolangit yang merupakan bagian dari Tahura (taman hutan raya) di sumatera utara. cagar alam sibolangit ini memiliki luas 85,15 Ha. Tujuan penelitian ini adalah 1)mengetahui bagaimana ciri fisik vegetasi flora yang ada di hutan sibolangit, 2) menganalisis klasifikasi jenis flora yang tumbuh dengan suhu dan ketinggian tempat yang berbeda di hutan sibolangit. Teknik pengumpulan data pada penelitian ini menggunakan metode survey lapangan. Survey lapangan digunakan untuk mendapatkan data valid terkait ciri fisik flora untuk klasifikasi flora tersebut. Hasil penelitian menunjukan bahwa jenis flora yang tumbuh di hutan sibolangit sangat beragam dan diklasifikasikan ke dalam 3 filum yaitu: filum spermatophyta, herydophita, dan byrophita. Ketiga jenis filum ini mendominasi pada ketinggian berbeda. Pada ketinggian 700m – 900m filum yang mendominasi adalah spermatophyta dengan kelas Gymnospermae dan  angyospermae, ptherophyta, ricciocarpus sp, lycophyta, pada ketinggian 900m – 1100m didominasi filum pheryophyta dengan kelas Pherophyta dan sphenphyta serta lycophyta, angyospermae, bryophyta, hepatophyta dan pada ketinggian 1100m – 1300m, didominasi filum byrophyta dengan kelas Bryophyta dan hepatophyta serta rthocerophyta (mendominasi), ptheropchyta, sphenophyta, lycophyta, angyosmpermae.  Kata kunci : Ketinggian tempat, Klasifikasi flora , Filum, Kelas. AbstractThe research area is Sibolangit Nature Reserve which is part of Tahura (forest park) in north sumatera. sibolangit nature reserve has an area of 85.15 Ha. The objectives of this research are 1) to know how the physical characteristics of flora vegetation present in the sibolangite forest, 2) to analyze the classification of flora species that grow with the temperature and height of different places in the sibolangite forest. Data collection techniques in this study using field survey methods. A field survey was used to obtain valid data related to the physical characteristics of the flora for the classification of the florate. The results showed that the type of flora that grows in the forest sibolangit very diverse. And classified into 3 phyla namely: phylum spermatophyta, herydophita, and byrophita. These three types of phyla dominate at different heights. At the height of 700m - 900m the dominant phylum is spermatophyta with class Gymnospermae and angyospermae, ptherophyta, ricciocarpus sp, lycophyta, at an altitude of 900m - 1100m dominated pheryophyta phyla with class Pherophyta and sphenphyta as well as lycophyta, angyospermae, bryophyta, hepatophyta and at an altitude of 1100m - 1300m , dominated byumhyyta phyla by class Bryophyta and hepatophyta and rthocerophyta (dominate), ptheropchyta, sphenophyta, lycophyta, angyosmpermae.Keywords: Elevation of places, Classification of flora, Phylum, Class. 

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