scholarly journals Influence of edaphic factors on the structure and distribution of plant species in and around Mekeiman Marsh Wetland, Northeast of Algeria

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Moundji Touarfia ◽  
NOUREDDINE BOUALI ◽  
ABDELKADER DJOUAMAA ◽  
MOHAMED CHERIF MAAZI ◽  
MOUSSA HOUHAMDI
Keyword(s):  
Environmental Factors ◽  
Species Composition ◽  
Plant Species ◽  
Principal Component ◽  
Freshwater Wetland ◽  
Plant Species Composition ◽  
Edaphic Factors ◽  
Marsh Wetland ◽  
Plant Assemblages ◽  
Species Composition And Distribution

Abstract. Touarfia M, Bouali N, Djouamaa Ak, Maazi MC, Houhamdi M. 2021. Influence of edaphic factors on the structure and distribution of plant species in and around Mekeiman Marsh Wetland, Northeast of Algeria. Biodiversitas 22: 3219-3228. Understanding the environmental factors that influence plant species composition and distribution is essential for successful management of biodiversity. Hence, the purpose of the present study was to assess plant species composition and distribution in a freshwater wetland Mekeiman Marsh, Northeastern Algeria and to analyze the influence of environmental factors on local plant species. To explore the distribution of plant species in this Marsh and analyze their associations with edaphic soil factors, the mapping and types of plant species in this area were analyzed by MapInfo and principal component analysis (PCA) ordination. For this purpose, four stations were chosen according to a stratified sampling method and phytosociological surveys were carried out in 12 plots, which were sampled using the Braun- Blanquet method. Multivariate analyses were used to determine the relationship between plant species distribution and edaphic factors. The R i386 (version 4.0.3) software was used for data analysis. We have identified 48 plant species belonging to 21 families. Results of biological types in the study area revealed the dominance of hemicryptophytes and therophytes, which indicates the presence of therophytization in this Marsh. Spatial distribution maps showed that plant species were divided into two categories viz. sparse and scattered plants according to the humidity gradient. The most important edaphic factors associated with plant species in Mekeiman Marsh were Sodium, Phosphorus, active limestone, Magnesium, clay, organic matter, C/N and Azot. By combining mapping and influence of edaphic factors on the structure and distribution of plant species in this wetland, it was known that the plant assemblages of this Marsh make disproportionately important contributions to wetland-level diversity. By combining mapping and influence of edaphic factors on the structure and distribution of plant species in this wetland, the plant assemblages of this Marsh make disproportionately important contributions to wetland-level diversity.

scholarly journals The influence of environmental factors on the distribution and composition of plant species in Oued Charef dam, northeast of Algeria

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
NAOUEL MOUALKI ◽  
Nadhra Sirine
Keyword(s):  
Cluster Analysis ◽  
Environmental Factors ◽  
Species Composition ◽  
Plant Species ◽  
Principal Component ◽  
Species Group ◽  
Terrestrial Species ◽  
North East ◽  
Species Groups ◽  
Ecological Species Groups

Abstract. Moualki N, Boukrouma N. 2021. The influence of environmental factors on the distribution and composition of plant species in Oued Charef dam, North East of Algeria. Biodiversitas 22: 346-353. Identification of the primary factors that influence the ecological distribution of species groups is important to managers of Oued Charef dam in northern Algeria. This study aimed to identify main ecological species groups, describe the site conditions associated with these species groups, and the relationships between environmental factors and the distribution of ecological species groups using Ward’s cluster analysis for classification and principal component analysis (PCA). For this purpose, 50 plots (200 m2 each) were sampled using the Braun- Blanquet method. Soil samples were collected and analyzed to study soil properties. Multivariate analysis methods were used to classify and determine the relationship between species composition and environmental factors and to recognize ecological species groups. The R i386 (version 4.0.3) software was used for data analyzing. Ward's cluster analysis when applied on terrestrial species data gives three groups distinctly distributed on ordination plan. In cluster groups of terrestrial species Group (1) is dominated by Daisies chrysanthemum, Group (2) by Cynodon dactylon L, and Group (3) dominated by Fumana thymifolia. The groups of terrestrial species are readily superimposed on PCA ordination plane. The most important environmental factors associated with terrestrial species composition in Oued Charef dam communities were conductivity (EC), FSA, FSI, clay, salinity, phosphorus (PO4), TN (nitrogen), nitrates (NO3), and nitrites (NO2). While among the edaphic factors only pH showed a negative correlation to plant species this may due to the anthropogenic disturbances however further studies are needed to explore the rest of parts of the said regions. This study gives important insights on ecological relationships between plant biodiversity and soil chemical in a primary wetland ecosystem in northeast of Algeria.

Drivers of plant species composition of ecotonal vegetation in two fishpond management types

2021 ◽  
Author(s):  
Kateřina Francová ◽  
Kateřina Šumberová ◽  
Andrea Kučerová ◽  
Michal Šorf ◽  
Stanislav Grill ◽  
...  
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
Plant Species Composition ◽  
Fishpond Management

Plant species composition and diversity in wetlands under forest, agriculture and urban land uses

2017 ◽  
Vol 138 ◽  
pp. 9-15 ◽  
Author(s):  
A. Moges ◽  
A. Beyene ◽  
A. Ambelu ◽  
S.T. Mereta ◽  
L. Triest ◽  
...  
Keyword(s):  
Species Composition ◽  
Plant Species ◽  
Urban Land ◽  
Plant Species Composition ◽  
Land Uses

scholarly journals Effects of High Impact Grazing on Species Diversity and Plant Functional Groups in Grasslands of Northern Argentina

2018 ◽  
Vol 10 (9) ◽  
pp. 3153
Author(s):  
Ditmar Kurtz ◽  
Marcus Giese ◽  
Folkard Asch ◽  
Saskia Windisch ◽  
María Goldfarb
Keyword(s):  
Species Composition ◽  
Functional Groups ◽  
Plant Species ◽  
High Impact ◽  
Sustainable Land Use ◽  
Plant Functional Groups ◽  
Seasonal Effects ◽  
Plant Species Composition ◽  
Wiener Diversity Index ◽  
The Impact

High impact grazing (HIG) was proposed as a management option to reduce standing dead biomass in Northern Argentinean (Chaco) rangelands. However, the effects of HIG on grassland diversity and shifts in plant functional groups are largely unknown but essential to assess the sustainability of the impact. During a two-year grazing experiment, HIG was applied every month to analyze the seasonal effects on plant species composition and plant functional groups. The results indicate that irrespective of the season in which HIG was applied, the diversity parameters were not negatively affected. Species richness, the Shannon–Wiener diversity index and the Shannon’s equitability index did not differ from the control site within a 12-month period after HIG. While plant functional groups of dicotyledonous and annual species could not benefit from the HIG disturbance, C3-, C4-monocotyledonous and perennials increased their absolute and relative green cover. Our results suggest that HIG, if not applied in shorter frequencies than a year, neither alters diversity nor shifts the plant species composition of the grassland plant community, but instead it promotes previously established rather competitive species. HIG could therefore contribute as an alternative management practice to the sustainable land use intensification of the “Gran Chaco” grassland ecosystem and even counteract the encroachment of “low value” species.

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