scholarly journals Woody species composition and structure of Amoro Forest in West Gojjam Zone, North Western Ethiopia

2018 ◽  
Vol 10 (4) ◽  
pp. 53-64 ◽  
Author(s):  
Birhanu Liyew ◽  
Bekele Tamrat ◽  
Demissew Sebsebe
Keyword(s):  
Species Composition ◽  
Woody Species ◽  
Composition And Structure ◽  
West Gojjam ◽  
North Western ◽  
Western Ethiopia ◽  
West Gojjam Zone ◽  
Species Composition And Structure

scholarly journals Analysis of Regional Peculiarities of Strongylid (Nematoda, Strongylidae) Biodiversity in Domestic Horses in Ukraine

2012 ◽  
Vol 46 (1) ◽  
pp. e-7-e-15 ◽  
Author(s):  
T. Kuzmina
Keyword(s):  
Species Composition ◽  
Western Europe ◽  
General Structure ◽  
Climatic Conditions ◽  
Species Level ◽  
Composition And Structure ◽  
Domestic Horses ◽  
The Uk ◽  
North Western ◽  
Species Composition And Structure

Analysis of Regional Peculiarities of Strongylid (Nematoda, Strongylidae) Biodiversity in Domestic Horses in UkraineAnalysis of regional peculiarities of species composition and structure of strongylid communities in domestic horses from various parts of Ukraine is presented. More than 86,000 strongylid specimens were collected using the diagnostic deworming technique from 180 horses in 10 regions (Kyivska, Kyrovogradska, Poltavska, Kharkivska, Sumska, Donetska, Ternopilska, Zakarpatska, Khersonska and AR Crimea) and identified to the species level. Thirty-three strongylid species from 12 genera were found - 26 species in the subfamily Cyathostominae and seven - in the subfamily Strongylinae. General structure of the strongylid community appeared to be multimodal. The highest biodiversity of strongylids was found in horses from Southern regions of Ukraine (29 species from 12 genera) and the lowest in Eastern regions (15 species from six genera). However, no statistically significant differences in species composition of strongylid communities in horses from various regions of Ukraine were found (p > 0.05). Comparison of strongylid biodiversity in domestic horses from Ukraine with that from others countries revealed the highest similarity of the strongylid communities from Ukraine, Czech Republic, and Poland; the lowest was in horses from South Africa and north-western Europe (France and the UK). Our results showed that the peculiarities of horse-keeping conditions influenced the biodiversity of the strongylid communities in domestic horses much more than climatic conditions in various regions.

Long-term dynamics and destruction of marsh vegetation in the Kolokolkova Bay of the Barents Sea

2012 ◽  
pp. 66-77 ◽  
Author(s):  
I. A. Lavrinenko ◽  
O. V. Lavrinenko ◽  
D. V. Dobrynin
Keyword(s):  
Species Composition ◽  
Plant Communities ◽  
Barents Sea ◽  
Mean Value ◽  
Marsh Vegetation ◽  
Composition And Structure ◽  
The Mean ◽  
Species Composition And Structure

The satellite images show that the area of marshes in the Kolokolkova bay was notstable during the period from 1973 up to 2011. Until 2010 it varied from 357 to 636 ha. After a severe storm happened on July 24–25, 2010 the total area of marshes was reduced up to 43–50 ha. The mean value of NDVI for studied marshes, reflecting the green biomass, varied from 0.13 to 0.32 before the storm in 2010, after the storm the NDVI decreased to 0.10, in 2011 — 0.03. A comparative analysis of species composition and structure of plant communities described in 2002 and 2011, allowed to evaluate the vegetation changes of marshes of the different topographic levels. They are fol­lowing: a total destruction of plant communities of the ass. Puccinellietum phryganodis and ass. Caricetum subspathaceae on low and middle marches; increasing role of halophytic species in plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. typicum on middle marches; some changes in species composition and structure of plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. festucetosum rubrae on high marches and ass. Parnassio palustris–Salicetum reptantis in transition zone between marches and tundra without changes of their syntaxonomy; a death of moss cover in plant communities of the ass. Caricetum mackenziei var. Warnstorfia exannulata on brackish coastal bogs. The possible reasons of dramatic vegetation dynamics are discussed. The dating of the storm makes it possible to observe the directions and rates of the succession of marches vegetation.

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