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Population ecology of Red-necked Spurfowl Pternistis afer in the coastal towns of the Eastern Cape province, South Africa
Ostrich ( IF 1 ) Pub Date : 2020-08-11 , DOI: 10.2989/00306525.2020.1794997
Johann H van Niekerk 1
Affiliation  

Conserved remnants of indigenous vegetation patches and corridors are regarded as important components of the built environment for the survival of birds. Field research was conducted at Boknes and Cannon Rocks in the Eastern Cape Province, South Africa to study habitat use, movement, and dispersal of two Red-necked Spurfowl Pternistis afer subpopulations during 2004–2007. Surveys included trapping, marking, releasing, and censusing spurfowl by traversing the study area on a regular basis, as well as fixed point observations. The density of Red-necked Spurfowl varied from 0.66–1 spurfowl ha−1. The sex ratio for female to male was 1:1.28. The average home range for adult males was 6.3 ha. The results suggest that supplementary feeding does not change the population structure or dispersion, nor does it improve productivity or density. The most determining factor influencing spurfowl populations was the presence of indigenous vegetation patches and continuous corridors of coastal vegetation allowing populational interchange and outright dispersal. Conservation measures are suggested to promote the survival of Red-necked Spurfowl in coastal town biotopes. This includes the removal of free ranging chickens Gallus gallus domesticus, which could harbour contagious disease, reduced use of hazardous substances, such as insecticides and herbicides in gardens, and the conservation of well-positioned green patches and corridors.



中文翻译:

南非东开普省沿海城镇红颈细颈蕨的种群生态学

保留下来的本地植被斑块和走廊的残留物被认为是鸟类生存环境的重要组成部分。在南非东开普省的Boknes和Cannon Rocks进行了实地研究,以研究2004-2007年期间两个亚颈红颈S凤蝶亚种群的栖息地使用,移动和扩散。调查包括定期遍历研究区域来诱捕,标记,释放和消灭灰鼠,以及进行定点观察。红颈紫花density的密度在0.66–1紫pur ha -1之间变化。男女性别比为1:1.28。成年男性的平均住所范围为6.3公顷。结果表明补充饲喂不会改变种群结构或分散度,也不会提高生产率或密度。影响花冠种群的最主要因素是本地植被斑块和沿海植被连续走廊的存在,从而允许种群互换和彻底扩散。建议采取保护措施以促进沿海城镇生物群落中红颈Red的生存。这包括除去游离测距鸡鸡内金可能会传染性疾病,减少花园中杀虫剂和除草剂等有害物质的使用,以及保护位置良好的绿色小块和走廊。

更新日期:2020-08-11
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