scholarly journals Effect of the competition mechanism of between co-dominant species on the ecological characteristics of Populus euphratica under a water gradient in a desert oasis

2021 ◽  
Vol 27 ◽  
pp. e01611
Author(s):  
Haobo Shi ◽  
Qingdong Shi ◽  
Xiaolong Zhou ◽  
Bilal Imin ◽  
Hao Li ◽  
...  
Keyword(s):  
Dominant Species ◽  
Populus Euphratica ◽  
Competition Mechanism ◽  
Ecological Characteristics ◽  
Desert Oasis ◽  
Water Gradient

scholarly journals LA VEGETACION MARINA DEL PARQUE NACIONAL TAYRONA, COSTA CARIBE COLOMBIANA, II: TIPOS DE VEGETACION

2016 ◽  
Vol 13 ◽  
Author(s):  
Germán E. Márquez C. ◽  
Gabriel Guillot M.
Keyword(s):  
Rainy Season ◽  
Dominant Species ◽  
Vegetation Type ◽  
Vegetation Types ◽  
Ecological Analysis ◽  
Spatial Complexity ◽  
Irregular Distribution ◽  
Ecological Characteristics ◽  
Circulation Patterns ◽  
Zonation Patterns

The benthic marine vegetation of the Parque Nacional Tayrona, Caribbean Coast of Colombia, II: Vegetation types. The benthic marine vegetation types of the littoral of the Parque Nacional Tayrona (Magdalena Department, Colombia) were studied during the rainy season. The methods used were modified from terrestrial phytosociology; appraisals of abundance and presence were made according to Braun-Blanquet (1965). Vegetation types are vertically distributed following the zonation patterns in each of the habitats studied: rocky, sandy-rocky and sandy-muddy. Habitats are divided according to the degree of surf exposure. The name of each vegetation type is that of the dominant species; a dominant species is considered to be the most outstanding one. 31 vegetation types have been described their distribution along the littoral in function of the ecological characteristics has been studied based on this description, the spatial complexity of the Tayrona littoral is great, as expresed by the irregular distribution of the species and vegetation types. The ecological characteristics of different areas of the Tayrona littoral, specially the bays ofChengue, Gayraca and Nenguange and the Cañaveral and Arrecifes sector, are analized and compared. The spatial complexity is atributed to oceanographic causes, specially the circulation patterns in the bays; Chengue is considered to have the most peculiar vegetation. Some considerations about the methods used and its convenience in ecological analysis are made.

Hyperspectral database prediction of ecological characteristics for grass species of alpine grasslands

2018 ◽  
Vol 40 (1) ◽  
pp. 19 ◽  
Author(s):  
Huan Yu ◽  
Bo Kong ◽  
Guangxing Wang ◽  
Hua Sun ◽  
Lu Wang
Keyword(s):  
Vegetation Cover ◽  
Dominant Species ◽  
Survey Methods ◽  
Visible Region ◽  
Hyperspectral Data ◽  
Tibet Plateau ◽  
Grass Species ◽  
Scientific Management ◽  
Alpine Grasslands ◽  
Ecological Characteristics

Alpine grasslands are being degraded because of human activities and associated global climate change. Mapping the spatial distributions and ecological characteristics of grass species is essential for scientific management of grasslands. However, traditional field-survey methods are costly or even impossible owing to poor accessibility. Hyperspectral remote sensing provides solutions for the purpose. This study was conducted in Shenzha County of the Qiangtang Plateau, north-western Qinghai–Tibet Plateau, to examine the potential of using hyperspectral data for identifying the grass species and predicting their ecological characteristics in the alpine grasslands dominated by Stipa purpurea with co-existing species Leontopodium nanum and Oxytropis microphylla. Hyperspectral data were collected in 106 sample quadrats and the ecological characteristics of each quadrat (number and height of plants, vegetation cover, etc.) were measured. The results of spectral data analysis and regression modelling showed the following. (i) The near- and middle-infrared region was more appropriate than the visible region for discriminating the grass species. (ii) The enhanced spectral variables had much higher correlations with the ecological characteristics than the original bands. (iii) Most of the 23 derived enhanced spectral variables were significantly correlated with the number and height of the dominant species plants within the quadrats. (iv) The vegetation cover could be accurately predicted by using the models based on the enhanced spectral variables of the field-collected hyperspectral data with the relative RMSE values <28%. (v) The ecological characteristics of the dominant species could be more accurately estimated than of co-existing species. Overall, this study suggests that the hyperspectral database method provided great potential to predict the ecological characteristics of grass species in alpine grasslands.

Fulgoromorpha and Cicadomorpha (Hemiptera) infesting bracken (Pteridium aquilinum)

2011 ◽  
Vol 80 (3) ◽  
pp. 451-456
Author(s):  
Aleksandra Halarewicz
Keyword(s):  
Population Dynamics ◽  
Dominant Species ◽  
Pteridium Aquilinum ◽  
Ecological Characteristics ◽  
Sw Poland

Fulgoromorpha and Cicadomorpha (Hemiptera) infesting bracken (Pteridium aquilinum) The abundance of six species of leafhoppers and planthoppers infesting bracken Pteridium aquilinum was determined in SW Poland. The paper describes the insects associated with the plant on the basis of their ecological characteristics. The population dynamics of the dominant species Ditropis pteridis Spinola (Delphacidae) is plotted.

DIVERSITY AND DISTRIBUTION OF ORIBATID MITE FAUNA(ACARI: ORIBATIDA) IN THE FOREST FLOOR OF SATKOSIA BASIPALLY WILD LIFE SANCTUARY, ODISHA, INDIA

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
SHELLEY ACHARYA ◽  
ADITI DUTTA
Keyword(s):  
Forest Floor ◽  
Dominant Species ◽  
Oribatid Mite ◽  
Soil Condition ◽  
Silica Content ◽  
Soil Mites ◽  
The Core ◽  
Humid Condition ◽  
Core Areas ◽  
Wild Life

The studies were mostly concentrated in Nine forest ranges of the WLS including the core areas. The soil of this region mostly is dry, red and with iron and silica content. Though the soil mites are prevalent in moist humid condition, we got a diversed population of 20 different species under 14 genera which is less than average probably due to the soil condition. Protoribates magnus is the dominant species in this study. The species with larger ranges were Scheloribates curvialatus.

Ecological Characteristics of Sub-Alpine Coniferous Forest on Banyabong in Mt. Jiri

2016 ◽  
Vol 7 (4) ◽  
pp. 465 ◽  
Author(s):  
Min-Gi Cho ◽  
Jae-Min Chung ◽  
Hyo-In Im ◽  
Il Noh ◽  
Tae-Woon Kim ◽  
...  
Keyword(s):  
Coniferous Forest ◽  
Ecological Characteristics

DEVELOPMENT OF DETERGENT RECIPE WITH IMPROVED ENVIRONMENTAL CHARACTERISTICS

2020 ◽  
Vol 5 (4) ◽  
pp. 223-229
Author(s):  
Yuliia Slyva ◽  
◽  
Oleksiy Verenikin ◽  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Synthetic Detergent ◽  
General Scheme ◽  
Practical Experience ◽  
Environmental Characteristics ◽  
Environmental Standard ◽  
Ecological Characteristics ◽  
Environmental Criteria ◽  
Environmental Properties

The research on the development of an innovative formula of a synthetic detergent with improved environmental properties, which meet the environmental standard of SOU OEM 08.002.12.065:2016 "Detergents and cleaning products. Environmental criteria for life cycle assessment" is carried out. The accumulated theoretical and practical experience is generalized, the general scheme of designing and development of new goods taking into account features of detergents with the improved ecological characteristics is created.

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