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1.
Forests along 60 kilometers of the lower Tana River, Kenya, provide habitat for one of the world’s top 25 most endangered primates, the Tana mangabey (Cercocebus galeritus). There is no current accurate estimate of the mangabey population, but a 1994 census estimated the population at 1,000–1,200. Their habitat has been severely degraded since then: visual estimates indicated that 30% of the forest area has been cleared and product use has increased in > 80% of forests surveyed. As the mean number of mangabey groups per forest is positively correlated with forest area and density of trees, this loss is damaging to the mangabey population. There has also been an increase in mangabey-human conflict, e.g., crop raiding, set traps, mangabeys chased by dogs. Mangabeys exhibit ecological flexibility, but behavioral data come from only a few mangabey groups. A new conservation approach is needed because past approaches, particularly the Tana River Primate National Reserve and a World Bank/Global Environment Facility Project, failed to protect the forests. The failure was mainly due to a disregard of the land-tenure issue within the Reserve, exclusion of local people from decision-making, and neglect of forests outside the reserve. Future actions must include community conservation programs and forest and corridor restoration. Research should focus on traditional management, status of primate groups in severely degraded forests, ecology of additional groups, and a population estimate to inform management as they implement more specific conservation strategies for the species.  相似文献   

2.
We studied the population size and distribution of diurnal primates in the lower Tana River forests, Kenya. They are the only remaining habitats for 2 threatened primates: the Tana River red colobus (Procolobus rufomitratus) and the Tana River crested mangabey (Cercocebus galeritus galeritus). We conducted censuses in 73 forest patches from January through March 2001. We estimate population size of the red colobus to be 788 individuals in 82 groups and that of the crested mangabeys to be 2,070 individuals in 59 groups. The data suggest that over a 7-year period (1994-2001), there was an 18% increase in the crested mangabey population and a 5% decline in red colobus numbers. Further, the red colobus range has expanded both north and south, whereas that of crested mangabeys has only expanded south. Fifty-six percent of crested mangabeys and 46% of red colobus groups were inside the Tana River Primate National Reserve (TRPNR). Other primates encountered included 170 groups of Sykes' monkeys (Cercopithecus mitis), 70 groups of yellow baboons (Papio cynocephalus) and 4 groups of grivets [Chlorocebus (Cercopithecus) aethiops]. Mean group densities of the 2 endangered primates and of baboons were higher inside than outside the TRPNR, reinforcing the importance of TRPNR for their conservation. An intervention program is required to stem further decline in the red colobus population and to protect small isolated groups in forest patches outside TRPNR.  相似文献   

3.
D. J. Goyder 《Kew Bulletin》2008,63(3):467-469
Summary   Tylophora tridactylata Goyder (Apocynaceae: Asclepiadoideae) is described from the Eastern Arc mountains of southern Tanzania and illustrated. Its conservation status is assessed.  相似文献   

4.
曲畅游  王聪聪  辛晓伟 《广西植物》2018,38(10):1399-1403
该文报道了中国莎草属(Cyperus)一新记录种——箱根莎草(C. hakonensis Franch.Sav.),丰富了该种形态特征的中文描述并补充了该种的植物解剖图。该种的主要特征是小穗淡绿色,宽约2 mm。鳞片先端具外弯的短尖,中间具龙骨状突起,淡绿色,两侧边缘膜质透明,果实表面光滑。凭证标本存于山东药品食品职业学院标本馆(SDFH)中。  相似文献   

5.
该文报道了发现于北京市密云区的1种被子植物新记录——荨麻叶龙头草[Meehania urticifolia(Miq.)Makino],其所隶属的龙头草属(Meehania Britton)为北京分布新记录。描述了荨麻叶龙头草的形态特征与生境,凭证标本藏于浙江大学标本馆(HZU)。荨麻叶龙头草于1899年首次发现于日本,是东北亚分布植物,此前在中国仅分布于东北。北京云蒙山发现的分布点,显然是该种目前在中国分布最西的分布点,可能于冰川期从东北亚迁移而来。  相似文献   

6.
四川重楼属植物地理分布新记录   总被引:1,自引:0,他引:1  
报道了四川重楼属植物1新分布种和1新分布变种,分别是平伐重楼(Paris vaniotii H.Léveillé)和白花重楼(P.polyphyllavar.alba H.Li&R.J.Mitchell)。二者均为狭域分布和间断分布类群,平伐重楼在模式标本产地濒于灭绝,四川新分布的发现具有重要意义。  相似文献   

7.
该文报道了贵州省荨麻科(Urticaceae)楼梯草属(ElatostemaJ.R.G.Forst.)植物2新记录,即环江楼梯草(E.huanjiangense W.T.WangY.G.Wei)和巨序楼梯草(E.megacephalum W.T.Wang)。  相似文献   

8.
Justicia brevipedunculata, a new species ofJ. sect.Ansellia endemic to Tanzania, is described and illustrated. Detailed palynological information is given, and relationships to other species of the section are discussed.  相似文献   

9.
通过对蜡盘衣属(Biatora)地衣的形态解剖学及化学研究,结合基因nrDNA ITS序列的系统发育分析,报道了采自河北省小五台山的蜡盘衣属地衣1中国新记录种——肉腊盘衣(新拟)[Biatora carneoalbida(Müll. Arg.) Coppins]。该种识别特征为地衣体壳状;子囊盘常簇生,盘面橙黄色;子囊棒状,8孢;子囊孢子无色,长纺锤形,(13.3~20.0)×(1.7~5.0)μm。该标本目前馆藏于中国科学院微生物研究所菌物标本馆地衣标本室(HMAS-L)和河北师范大学植物标本室(HBNU)。  相似文献   

10.
报道了中国大陆兰科植物新记录种——美丽盆距兰[Gastrochilus somai(Hayata)Hayata],并提供形态描述与图片。该植物在福建省的发现有助于研究美丽盆距兰与黄松盆距兰[G.japonicas(Makino)Schltr.]的分类以及中国大陆与附近岛屿植物区系的内在联系。  相似文献   

11.
记述中国水虻亚科1新记录属:诺斯水虻属Nothomyia Loew,1869及2新种:即长茎诺斯水虻N. elongoverpa sp. nov.和云南诺斯水虻N. yunnanensis sp.nov.模式标本保存在贵州大学昆虫研究所标本馆。  相似文献   

12.
采用形态解剖、化学、生态类型及地理成分分析等传统分类方法对新疆天山南部巴音布鲁克山区地衣外部形态和内部构造、地衣附属结构、地衣繁殖器官进行观察。利用显色反应法(CT)、微量化学结晶法(MCT)、薄层层析法(TLC)等生物化学方法,鉴定地衣次生代谢产物,发现了1个中国新记录种:乌普萨拉肉疣衣[Ochrolechia upsaliensis(L.)A.Massal]。文中描述了该新记录种地衣的形态解剖、化学特征和生境,并提供了地衣体、子囊及子囊孢子的彩色图片。  相似文献   

13.
该文报道了耧斗菜属植物长果耧斗菜(Aquilegia yangii Y. LuoL. Li)的新分布区——陕西省凤县通天河国家森林公园,将该种的分布区向东扩展到了陕西省的秦岭地区,丰富了陕西省新增植物分布记录,为秦岭地区的物种多样性研究提供了证据。  相似文献   

14.
报道了夹竹桃科萝藦亚科长瓣球兰[Hoya acuminata (Wight) Benth. ex Hook. f.]在中国的新分布记录。长瓣球兰过去记录在不丹、印度东北部(Sikkim, Khasia)和缅甸,2015年在中国西南部的西藏墨脱县内、海拔1 577 m的山林树上发现长瓣球兰。该物种与景洪球兰相近,但前者枝条光滑无毛,每个花序着花3~5朵,花冠直径达5 cm,花冠裂片长2 cm。凭证标本存放于广西药用植物园标本馆(GXMG)。  相似文献   

15.
该文报道了西藏地区紫草科1新记录属微果草属(Microcaryum)及1新记录种微果草(Microcaryum pygmaeum (Clarke)Johnst.)。该种发现于西藏隆子县,生于海拔约5 000 m的高山草甸。研究了其外部形态、小坚果微形态及花粉形态,并与形态相近种毛果草 (Lasiocaryum densiflorum (Duthie)Johnst.) 进行了比较。凭证标本保存于北京师范大学动植物标本馆植物标本室(BNU)。  相似文献   

16.
该文报道了湖南杜鹃花科一新记录植物——早春杜鹃(Rhododendron praevernum),并对其花部形态和叶形大小进行了补充描述。该种的雄蕊数目变异较大,现有文献的描述差异也较大,导致鉴定该物种时出现一定困难和混乱。该研究结果为该种进一步分类修订提供了有价值的信息。  相似文献   

17.
记述中国瘦棍腿天牛属1新记录种:白腹瘦棍腿天牛Stenodryas ventralis(Gahan, 1906)。简述了该种的形态特征,提供了瘦棍腿天牛属中国已知记录种的检索表。研究标本保存在西南大学昆虫标本馆。  相似文献   

18.
王涛  王龙  徐峰  刘世勇  张利 《西北植物学报》2014,34(10):2125-2126
报道了产于四川省鼠尾草属植物1新分布种和1新分布变种,分别为毛地黄鼠尾草(Salvia digitaloides Diels)和黄花鼠尾草大花变种(Salvia flava var.megalantha Diles)。  相似文献   

19.
西藏兰科新记录   总被引:1,自引:0,他引:1  
报道了兰科(Orchidaceae)高山铠兰[Corybas himalaicus (King & Pantl.) Schltr.]和山珊瑚(Galeola faberi Rolfe)在中国西藏自治区的分布新记录。高山铠兰形态上因唇瓣先端边缘齿蚀状,花瓣与侧萼片在基部贴生,长7~8 mm,距暗红色而区别于铠兰属其他种;山珊瑚形态上因萼片狭椭圆形,唇瓣上散生褶片状附属物,边缘不规则齿状而区别于山珊瑚属其他种。凭证标本存放于广西药用植物园标本馆(GXMG)。  相似文献   

20.
报道中国大陆兰科(Orchidaceae)天麻属(Gastrodia R. Brown)二新记录种——折柱天麻(Gastrodia flexistyla T. C. HsuC. M. Kuo)和叉脊天麻(Gastrodia shimizuana Tuyama)。折柱天麻与日本天麻[Gastrodia nipponica(Honda) Tuyama]相似,但前者花被筒长、疣状凸起不明显,唇瓣绿黄色等特征可与后者相区分。叉脊天麻与冬天麻(Gastrodia pubilabiata Sawa)相近,但前者花被筒浅黄褐色至淡红褐色,唇瓣三角状、白色等特征易与后者相区别。该文提供了新记录种的形态描述及图版。  相似文献   

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