Impacts of Invasive Fishes on Fishery Dynamics of the Yamuna River, India

来源 :农业科学(英文) | 被引量 : 0次 | 上传用户:c566178
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Invasion, spread and predominance of alien invasive fishes were studied in 950-km-long stretch of the Yamuna River. The fish yield ranged between 32 t/km/yr to 240 t/km/yr and the catch of alien invasive fishes dominated over local fishes in the fishery,
其他文献
The purpose of the present study was to develop a new method for producing and identifying a bacteriophage suspension and research its potential against plant b
The genetic variability is considered as the major principle of plant breeding for durum wheat. This variability can be induced in vitro by selection pressure e
这是一篇国外考察报告,介绍了蒙古东南部地区由碱性一次碱性火山岩、次火山岩和侵入岩组成的中生代碱性杂岩体及其与有关的稀有稀土矿床的基本地质特征,并对与蒙古吡邻的中国境
随着城市公共交通战略的逐步推进,公共交通已成为许多城市交通出行的主要方式之一。而与此同时,因缺少完善的交通指引系统,部分市民无法准确地找到合适的公交站点,影响了公共
随着我国人民生活水平的不断提高,私人小汽车进入每家每户已成为一种趋势。有人提出,只要公共交通发达了,私车必然走向没落,将来必定被发达的公共交通所替代。但是,大家不能
<正> 认真阅读和研究了93MET和NMET试题之后得到两点启示,也可以说是两条教训,写将出来,供同行参考,尤其值得面临高考的第一线师生借鉴。一、谨防“特殊”,小心“反常”: 中
The “bai?o de dois” is a typical Brazilian dish and a rich combination of rice and beans. This preparation has a high nutritional value but its effect on glyc
Field studies were conducted in various locations in Ontario during 2011 to 2013 to evaluate s-metolachlor, imazethapyr and linuron applied preemergence (PRE) a
利用山西省装备制造业集群企业的数据,实证分析了集群企业的纵向合作和横向合作对综合创新、产品创新和流程创新的作用。结果表明:纵向合作是影响山西省装备制造业集群创新的重
The Lancang River Watershed is one of the most biologically diverse areas in the world. The river flows through Yunnan Province, China, which suffered serious d