Avian and Habitat Diversity in the Semi-Arid Lands of Baringo South, Kenya  

作　　者：George Morara Ogendi Rhoda N. Ondieki George Morara Ogendi;Rhoda N. Ondieki(Department of Environmental Science, Egerton University, Egerton, Kenya;Dryland Research Training & Ecotourism Centre, Chemeron, Egerton, Kenya)

机构地区：[1]Department of Environmental Science, Egerton University, Egerton, Kenya [2]Dryland Research Training & Ecotourism Centre, Chemeron, Egerton, Kenya

出　　处：《Open Journal of Ecology》2020年第8期518-536,共19页生态学期刊（英文）

摘　　要：Semi-arid wooded-shrublands are important and critical habitats that provide breeding and feeding grounds for a variety of bird species, some of which are endangered, vulnerable or threatened with extinction. Habitat type and size influence abundance and diversity of birds globally and particularly in developing countries that are characterized by rapid human population growth and haphazard urban, agricultural and industrial development. The objective of this study was to assess avian and habitat diversity at Chemeron, a semi-arid land in the northern rangelands of Kenya. The study was guided by four questions: What kind of Habitat types are present at Chemeron study area? What kind of birds are found at Chemeron area? What is the conservation status of birds found at Chemeron area? What are the functional feeding guilds of birds that are found in the study area? How does the habitat type influence bird species abundance and diversity at Chemeron? Four 2-km long transects radiating from a central point within the study area were selected for a ground survey of birds that was conducted on foot. The surveys were conducted between 06:30 and 09:30 and 16:00 and 18:00 from October 2019 to April 2020. Bird species were observed and identified to the species level using high-resolution binoculars, field guidebooks and available taxonomic keys. Our surveys documented two main habitat types: <em>Acacia-Balanites-Boscia</em> woodlands dominated by <em>Acacia senegal</em>,<em> Acacia mellifera</em>, <em>Acacia nilotica</em>, <em>Boscia angustifolia</em>, and <em>Balanites aegyptica</em>. The second kind of habitat consisted of the invasive <em>Acalypha fruticosa</em> and <em>Indigofera arrecta</em> with <em>Acacia reficiens-Acacia brevispica</em> overstorey. A total of 53 bird species were sighted and identified the vulnerable Yellow necked spurfowl (<em>Francolinus leucoscepus</em>). Seventy-nine percent of the birds were sighted as singles or in pairs except for the gregarious white browed sparrow weaver (<em>Plocepasser Semi-arid wooded-shrublands are important and critical habitats that provide breeding and feeding grounds for a variety of bird species, some of which are endangered, vulnerable or threatened with extinction. Habitat type and size influence abundance and diversity of birds globally and particularly in developing countries that are characterized by rapid human population growth and haphazard urban, agricultural and industrial development. The objective of this study was to assess avian and habitat diversity at Chemeron, a semi-arid land in the northern rangelands of Kenya. The study was guided by four questions: What kind of Habitat types are present at Chemeron study area? What kind of birds are found at Chemeron area? What is the conservation status of birds found at Chemeron area? What are the functional feeding guilds of birds that are found in the study area? How does the habitat type influence bird species abundance and diversity at Chemeron? Four 2-km long transects radiating from a central point within the study area were selected for a ground survey of birds that was conducted on foot. The surveys were conducted between 06:30 and 09:30 and 16:00 and 18:00 from October 2019 to April 2020. Bird species were observed and identified to the species level using high-resolution binoculars, field guidebooks and available taxonomic keys. Our surveys documented two main habitat types: <em>Acacia-Balanites-Boscia</em> woodlands dominated by <em>Acacia senegal</em>,<em> Acacia mellifera</em>, <em>Acacia nilotica</em>, <em>Boscia angustifolia</em>, and <em>Balanites aegyptica</em>. The second kind of habitat consisted of the invasive <em>Acalypha fruticosa</em> and <em>Indigofera arrecta</em> with <em>Acacia reficiens-Acacia brevispica</em> overstorey. A total of 53 bird species were sighted and identified the vulnerable Yellow necked spurfowl (<em>Francolinus leucoscepus</em>). Seventy-nine percent of the birds were sighted as singles or in pairs except for the gregarious white browed sparrow weaver (<em>Plocepasser

关 键 词：HABITAT Avian Diversity Extinction Acacia Woodlands RANGELANDS 

分 类 号：Q95[生物学—动物学]