An inventory and assessment of exotic and native plant species diversity in the Kenyan rangelands: Case study of Narok North Sub-County

2015 ◽  
Vol 7 (8) ◽  
pp. 238-246
Author(s):  
W Cheche Winnie ◽  
W Githae Eunice ◽  
F Omondi Stephen ◽  
M Magana Adiel
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Plant Species Diversity ◽  
Native Plant ◽  
Native Plant Species

scholarly journals Rhizosphere Microbial Population and Plant Species Diversity as Influenced by Chromolaena odorata Invasion

2018 ◽  
Vol 6 (4) ◽  
pp. 36
Author(s):  
Solomon A. Adejoro ◽  
Lekan C. Aguda
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Microbial Population ◽  
Block Design ◽  
Plant Species Diversity ◽  
Soil Microbiome ◽  
Native Plant ◽  
Chromolaena Odorata ◽  
Soil Microbial ◽  
Soil Microbial Population

Invasive plant species have been commonly implicated to cause loss in plant species diversity. Attention had however not been paid to the effects of these species loss on the soil microbiome. A study was conducted in 18 farmers’ fields within three states in southwestern Nigeria to examine the effect of Siam weed (Chromolaena odorata) invasion on native plant diversity as well as on the rhizosphere microbial population using randomized complete block design. Results indicated significant losses in plant species diversity and reduction in density per square meter compared with adjacent non infested fields. Results further showed C. odorata invasion exerted diverse influence on soil microbial population. Relationships were subsequently established among plant density, species diversity; and soil microbial population. Further studies were also recommended to accommodate more microbiological indices.

scholarly journals Measuring plant species diversity in alpine zones: A case study at the Kazdaği National Park, in Turkey

2011 ◽  
Vol 63 (4) ◽  
pp. 1147-1156 ◽  
Author(s):  
Şat Güngör
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
National Park ◽  
Species Conservation ◽  
Plant Species Diversity ◽  
Individual Species ◽  
Endemic Plant ◽  
Alpine Regions ◽  
Ecosystem Diversity

Biodiversity includes three main concepts: genetic diversity, species diversity and ecosystem diversity. Species diversity: mountain ecosystems, alpine regions above the timberline, have to be rich in terms of plant compositions and plant species diversity. Richness and evenness are two main factors in measuring the diversity of a habitat. Richness takes into account individual species, while evenness contributes towards the relative abundance of each species. According to the results of this study, 52% of the total endemic plant taxa of the Kazda?? National Park is determined in the alpine regions and therefore the alpine zones, with their rich endemic and rare plant species, are important from the aspect of biodiversity and species conservation. In addition, this study describes the relation between environmental factors and plant species diversity and evenness.

scholarly journals Diversity and Community Structure of Plants in Selected Areas within Lake Mainit Watershed

2020 ◽  
Vol 5 (6) ◽  
pp. 1482-1500
Author(s):  
Romana M.Maglinte ◽  
Julie E.Asubar ◽  
Emeliano M. Bermudez, Jr ◽  
Gregorio Z. Gamboa, Jr ◽  
Bernadette P.Bagaipo ◽  
...  
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Plant Species ◽  
Anthropogenic Activities ◽  
Native Plant ◽  
Native Plant Species ◽  
Quadrat Method ◽  
Environmental Integrity ◽  
Sustainable Conservation ◽  
Trees And Shrubs

Lake Mainit is one of the key biodiversity areas in the country, its watershed area is a habitat of endemic and native plant species but is now threatened due to anthropogenic activities such as mining, kaingin and expansion of agriculture. This study assessed the diversity and community structure of plants in the lowland and upland of the two selected areas (Cantugas and Jabonga) of Lake Mainit watershed through a transect and quadrat method. A total of 321 floral species were identified distributed into 85 families. The taxonomically well distributed families were Arecaceae, Moraceae and Fabaceae with 18, 17 and 14 species respectively and most species were trees and shrubs (187 species). The highest species diversity, richness and abundance was observed in the lowland of Jabonga while the highest dominance was observed in the upland of Catugas. The floral species of Lake Mainit watershed are threatened by anthropogenic activities especially expansion of agriculture and tree felling for infrastructure developments regardless of their environmental roles and inherent benefits. Therefore, sustainable conservation efforts should be geared towards ensuring their continuous existence in order to maintain environmental integrity.

scholarly journals Urbanization increases floral fidelity of pollinators

2021 ◽  
Author(s):  
Sevan Suni ◽  
Erin Hall ◽  
Evangelina Bahu
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Plant Species ◽  
Invasive Plants ◽  
Plant Species Diversity ◽  
Individual Plant ◽  
Native Plant ◽  
Natural Areas ◽  
Short Term ◽  
Urban Sites

Understanding how urbanization alters functional interactions among pollinators and plants is critically important given increasing anthropogenic land use and declines in pollinator populations. Pollinators often exhibit short-term specialization, and visit plants of the same species during one foraging trip. This facilitates plant receipt of conspecific pollen – pollen on a pollinator that is the same species as the plant on which the pollinator was foraging. Conspecific pollen receipt facilitates plant reproductive success and is thus important to plant and pollinator persistence. We investigated how urbanization affects short term specialization of insect pollinators by examining pollen loads on insects’ bodies and identifying the number and species of pollen grains on insects caught in urban habitat fragments and natural areas. We then assessed possible drivers of differences between urban and natural areas, including frequency dependence in foraging, species richness and diversity of the plant and pollinator communities, floral abundance, and the presence of invasive plant species. Pollinators were more specialized in urban fragments than in natural areas, despite no differences in the species richness of plant communities across site types. These differences were likely driven by higher specialization of common pollinators, which were more abundant in urban sites. Pollinators were also more specialized when foraging on invasive plants across sites, and floral abundance of invasive plants was higher in urban sites. Our findings reveal strong effects of urbanization on pollinator fidelity to individual plant species and have implications for the maintenance of plant species diversity in small habitat fragments. The higher fidelity of pollinators to invasive plants suggests that native species may receive fewer visits by pollinators. Therefore, native plant species diversity may decline in urban sites without continued augmentation of urban flora or removal of invasive species.

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