搜索结果: 1-15 共查到“生物学 River”相关记录43条 . 查询时间(0.235 秒)
River erosion can shape fish evolution, study suggests（图）
河流侵蚀 鱼类 进化 生物多样性
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2023/6/21
If we could rewind the tape of species evolution around the world and play it forward over hundreds of millions of years to the present day, we would see biodiversity clustering around regions of tect...
Thawing permafrost affects Alaska's land-to-ocean river flows（图）
Thawing permafrost Alaska land-to-ocean river flows
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2020/1/21
A new analysis of the hydrologic cycle across the North Slope of Alaska reveals significant increases in subsurface runoff and cold season discharge -- changes scientists say reflect thawing permafros...
Plant physiology will be major contributor to future river flooding（图）
Plant physiology major contributor future river flooding
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2019/10/28
The next time a river overflows its banks, don't just blame the rain clouds. Earth system scientists from the University of California, Irvine have identified another culprit: leafy plants.In a study ...
《Fishery Resources,Environment,and Conservation in the Mississippi and Yangtze（Changjiang）River Basins》出版（图）
中国科学院水生生物研究所 鱼类 渔业资源 地质环境 土地利用情况 水文 生态环境 长江 密西西比河
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2016/8/24
近日，由中国科学院水生生物研究所陈宇顺研究员等主编的《Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins》一书在美国大自然保护协会、 美国鱼类与野生动物局、美国地质调查局及美国阿肯色大学等机构的资助下，由美国渔业(水产)学会正式出版（htt...
Burial sites show how Nubians,Egyptians integrated communities thousands of years ago in Nile River Valley area
Burial sites Nubians Egyptians integrated communities Nile River Valley area
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2016/5/31
New bioarchaeological evidence shows that Nubians and Egyptians integrated into a community, and even married, in ancient Sudan, according to new research from aPurdue University anthropologist.“...
Variations in values among major plant community types in the Xilin River Basin, Inner Mongolia, China
plant community types Xilin River Basin Inner Mongolia China
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2015/2/4
The δ13C values of 51 plant species selected from eight plant communities along a moisture gradient were measured. Our results showed that all the community types that we investigated are dominated by...
'Just right' plant growth may make river deltas resilient（图）
Plant growth deltas resilient
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2014/9/1
BLOOMINGTON, Ind. -- Research by Indiana University geologists suggests that an intermediate amount of vegetation -- not too little and not too much -- is most effective at stabilizing freshwater rive...
Ultrahigh bacterial production in a eutrophic subtropical Australian river: Does viral lysis short-circuit the microbial loop?
short-circuit the microbial loop Ultrahigh bacterial production
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2014/4/8
We studied trophic dynamics in a warm eutrophic subtropical river (Bremer River, Australia) to determine
potential sources of dissolved organic carbon (DOC) and the fate of heterotrophic bacterial pr...
Distribution Pattern and Morphological Differences between the Sexes of River Blenny, Salaria fluviatilis (Asso, 1801), in the Ceyhan River Basin, Turkey
Ceyhan River river blenny Salaria fluviatilis distribution morphology
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2010/3/26
The distribution of the river blenny (Salaria fluviatilis) in the Ceyhan River basin and the morphological differences between the sexes were investigated. Occurrence of the river blenny in the Ceyhan...
Cytogenetic analysis of Pseudophoxinus antalyae, Bogustkaya, 1992 (Pisces: Cyprinidae) from the Eastern Mediterranean River Basin, Turkey
Pseudophoxinus antalyae karyotype banding Turkey
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2010/3/24
The karyotype of Pseudophoxinus antalyae was analyzed using G-banding, C-banding, Ag-NOR staining, and Q-banding. Chromosome analysis of this species, which lives in the Berdan River and Berdan Dam La...
Study of seasonal influences on algal biodiversity in the River Yarqon (central Israel) by bio-indication and canonical correspondence analysis (CCA)
Algae biodiversity ecology CCA seasonal River Yarqon Israel
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2010/3/17
In our research conducted in the River Yarqon during 2003-2006, we identified 313 taxa of algae and cyanobacteria belonging to 8 taxonomical divisions. Out of these 313 taxa, 268 taxa (85.6%) were ind...
Oligochaeta of the Pechora River Basin, Russia
aquatic fauna Oligochaeta Pechora River North-Eastern Europe
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2009/6/3
About 100 species of Oligochaeta belonging to 7 families have been identified in the Pechora River basin, the largest
waterway in the North-East of European Russia. The underlying studies were carr...
Age and Growth Characteristics of Himri Barbel (Barbus luteus Heckel, 1843) in Orontes River, Turkey
Himri Barbel Barbus luteus Age Growth Orontes River
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2010/3/26
In this study, the age and growth of Himri Barbel (Barbus luteus Heckel, 1843) were determined based on specimens collected from Orontes River-Turkey, during the period from February 2004 to January 2...
Genetic Variation and Divergence among Swamp Buffalo, River Buffalo and Cattle: A Microsatellite Survey on Five Populations in China
Buffalo Cattle Microsatellite Genetic Diversity Divergence
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2016/4/28
Domestic buffalo and cattle are two extremely important livestock species in worldwide agricultural production. In this paper, to investigate genetic diversity and divergence among swamp buffalo, rive...
河流型水牛与沼泽型水牛杂交后代(2n=49) 染色体遗传与繁殖力的研究Studies of Chromosomal Heredity and Fertility of Progenies (2n=49) Crossed between River and Swamp Buffalo
三品种杂交水牛 2n=49核型 染色体分离 繁殖力 异常配子
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2007/12/30
摘要通过2n=50和2n=49两种核型三品种杂交水牛繁殖记录分析和其中2n=49三品种杂交水牛联会复合体及其精子染色体研究，结果表明，后者虽然公母都是可育的，由于它产生两种正常配子（n=24，n=25）和两种异常配子（n=24+1，n=25-1），自群繁殖导致其子代染色体多态性（2n=50，2n=49和2n=48）；其异常配子，与正常配子结合，则产生非整倍性，致其繁殖力降低，表现为情期配种受胎率降...