Results 21 to 30 of about 11,190 (177)
Hierarchical data grid resource allocation based on quotient space theory [PDF]
, 2013 In order to solve the problems of falling into local optimum value and converging too slowly when allocating resources in hierarchical data grid using traditional algorithms,the granular computing was introduced and a quotient space theory based ...
Chun-zhong XIA, Shun-lin SONG
core +1 more source
Wildlife Letters, EarlyView.In the winter of 2021/2022, a winter track survey revealed 43–46 tigers (without cubs) in 5.4 thousand km2 of suitable habitats in the Southwest Primorsky Province of Russia. In the same period, a network of camera traps registered 54 adult/subadult tigers here.
Yury Darman, Dina Matiukhina
wiley +1 more source
, 2012 沉积物疏浚是削减富营养化湖泊内源负荷的最为直接和有效的手段。分析了沉积物疏浚的效果和可能引起的风险;从外源污染、作业区域和深度、沉水植物3个方面探讨了影响沉积物疏浚效果的关键因素。最后指出,富营养化湖泊沉积物疏浚的重要原则是截断外源污染、划分作业区域、合理控制挖掘深度、创造适宜生境、恢复沉水植物 ...
刘华丽 +3 more
core
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
Risk assessment for Indo-Pacific Humpback dolphin (Sousa chinensis) heavy metals exposure from ingestion of fish in the waters of Xiamen Bay [PDF]
, 2016 中华白海豚是我国唯一一级保护海洋鲸豚，被誉“海上国宝”，在闽、粤、 港、台地区还被誉为“妈祖鱼”。在我国主要分布在广西、海南、广东、香港、 澳门、福建、台湾、浙江沿岸，喜在沿岸河口浅水域活动。20世纪80年代以 来，随着我国海岸带开发利用活动的增加，中华白海豚受到人类活动的不利影响 加大。厦门海域是中华白海豚的重要栖息地之一，而近年来伴随着厦门经济的发 展，中华白海豚面临着巨大的环境压力，水体环境污染成为危害白海豚健康的主 要因素之一。对多只厦门海域搁浅的白海豚的研究发现，其体内已累积多种重金 属元素 ...
刘婉欣
core
Conservation Biology, EarlyView.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
, 2005 曹扬环浜是一条环形封闭水道,水质低于地表水V类标准,水体处于严重超富营养化水平,全浜暴发蓝藻水华现象。在采用截污、造流、生态恢复等生态工程措施综合治理后,随着健康水生态系统的建立,河浜水质逐步变好(由劣V类改善为接近Ⅲ类标准),水体透明见底,沉水植物覆盖率达70%~90%,水体一直维持“清水草型稳态”。重点介绍了河道治理中采用的生态修复措施及其作用,并从截污、营养盐、水生生物等方面分析了各项工程措施对抑制藻类生长、水质改善的影响 ...
方涛,王春树,陈洪达,李敦海,刘永定
core
When and why to give shorebirds a head start
Conservation Biology, EarlyView.Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson +4 more
wiley +1 more source
The biotoxic effect of ZnO nanoparticles on three zooplankton [PDF]
, 2017 纳米氧化锌（ZnO-NPs）因其特殊的理化性质而在化妆品、医学抗菌、工业涂料等领域被广泛应用。其通过工业生产、商品使用、空气沉降、运输泄露、地表水径流等途径直接或间接汇入海洋环境，对海洋的生态系统构成潜在威胁。海洋中的浮游动物可以通过摄食影响或控制初级生产力，同时它们的种群动态变化又影响许多鱼类和其他动物资源群体的生物量。开展纳米氧化锌对浮游动物的毒性效应研究，对于了解纳米材料在水体中行为、评价浮游动物对纳米材料的响应、实现纳米材料环境危害性的合理评估具有十分重要的意义 ...
余东林
core
Lessons from an eradication under multiple constraints of an island rat population of record density
Conservation Biology, EarlyView.Abstract Invasive rats threaten island biodiversity, disrupting ecosystems and endangering native species. Although rat eradication has succeeded on many islands, tropical islands present unique management challenges. Strict regulations and financial constraints on some tropical islands further limit proven eradication methods, complicating rodent ...
Tatiane Micheletti +7 more
wiley +1 more source