全文获取类型
收费全文 | 141篇 |
免费 | 1篇 |
专业分类
废物处理 | 9篇 |
环保管理 | 1篇 |
综合类 | 21篇 |
基础理论 | 35篇 |
环境理论 | 1篇 |
污染及防治 | 55篇 |
评价与监测 | 7篇 |
社会与环境 | 13篇 |
出版年
2023年 | 4篇 |
2022年 | 5篇 |
2021年 | 1篇 |
2020年 | 4篇 |
2018年 | 2篇 |
2017年 | 3篇 |
2016年 | 11篇 |
2015年 | 5篇 |
2014年 | 11篇 |
2013年 | 11篇 |
2012年 | 5篇 |
2011年 | 9篇 |
2010年 | 7篇 |
2009年 | 16篇 |
2008年 | 7篇 |
2007年 | 7篇 |
2006年 | 5篇 |
2005年 | 9篇 |
2004年 | 7篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1966年 | 1篇 |
1963年 | 1篇 |
1960年 | 1篇 |
1922年 | 1篇 |
排序方式: 共有142条查询结果,搜索用时 0 毫秒
141.
Although mate guarding as prevention of extra-pair copulation is common among birds, evidence for aggressive behaviour involving
physical contact related to mate guarding in passerines is scarce and cases of the presence of one partner directly influencing
the aggressiveness of the other are lacking. We investigated the intra-specific territorial behaviour of male meadow pipits
(Anthus pratensis; Passeriformes: Motacillidae) at the beginning of the breeding season by placing a pipit model accompanied by an intra-specific
song playback in the territory of socially paired males and compared the responses of males whose mates were physically present
during trials with those whose females were out of sight. The level of aggression of males was significantly higher in the
presence of the female; half of the males in this group physically attacked the model (the most intense and risky aggressive
behaviour). Physical attacks did not occur among males whose female was absent during the trial; response to the playback
by most of these males was only weak. This pattern may be related to the prevention of extra-pair copulation; if the risks
involved in the conflict are outweighed by potential loss of paternity, such aggressive mate guarding may pay off. The apparently
overlooked effect on the territorial behaviour of a partner’s passive physical presence during conflict should be further
evaluated because it may be important for the design and interpretation of results of behavioural experiments. 相似文献
142.
Ivascu Larisa Domil Aura Sarfraz Muddassar Bogdan Oana Burca Valentin Pavel Codruta 《Environmental science and pollution research international》2022,29(55):82827-82843
Environmental Science and Pollution Research - The paper examines how environmental, social, and governance (ESG), including management incentives, influence a firm’s financial performance.... 相似文献