As a top predator,the Eurasian otter(Lutra lutra)is an indicator of healthy freshwater ecosystems and a flagship species for conservation.Once widespread in China,the species is now distributed mainly in the upper rea...As a top predator,the Eurasian otter(Lutra lutra)is an indicator of healthy freshwater ecosystems and a flagship species for conservation.Once widespread in China,the species is now distributed mainly in the upper reaches of the great rivers of western China.However,a lack of knowledge on local otter populations continues to hinder their conservation in China.Here,we conducted a detailed study on habitat use of Eurasian otters in Yushu City and Tangjiahe National Nature Reserve in western China using transect surveys.At both study sites,otters preferred to defecate on large rocks close to or protruding from the river and about 50 cm above the waterline.In Yushu,no spraints were found along the 5 km river bank section in the downtown area,with otters preferring sprainting sites with natural banks,riparian zones,and lower human population density.However,this pattern was not obvious at Tangjiahe,where river transformation and human disturbance are minor.Otter river use intensity was negatively correlated with elevation and human population density in Yushu in both seasons.In Tangjiahe,otter river use intensity was positively correlated with prey mass and flow rate and negatively correlated with human population in spring,but positively correlated with human population and negatively correlated with flow rate in autumn.These results reflect the flexible habitat use strategies of otters at different sites,underlining the necessity to study otters living in different regions and habitat types.We provide suggestions for river modification and call for more site-specific studies to promote otter conservation in China.展开更多
DEAR EDITOR,In mid-September 2018,during a field survey in Chiat'ung,Sanjiangyuan(Three-River-Source)Region,Tibetan Plateau,China,we discovered the first active breeding den of the Chinese mountain cat(Felis bieti...DEAR EDITOR,In mid-September 2018,during a field survey in Chiat'ung,Sanjiangyuan(Three-River-Source)Region,Tibetan Plateau,China,we discovered the first active breeding den of the Chinese mountain cat(Felis bieti),inhabited by one adult female and two kittens.Based on fieldwork over the following months,five breeding dens were discovered,and 33 sightings were recorded.展开更多
Objective:To observe the TCM(Traditonal Chinese Medcine)syndromes effect and safety of Shujinjianyao Pill in the treatment of LSS(Lumbar Spinal Stenosis)(Ganshenbuzu and Fengshiyuzu Syndrome).Methods:120 LSS patients ...Objective:To observe the TCM(Traditonal Chinese Medcine)syndromes effect and safety of Shujinjianyao Pill in the treatment of LSS(Lumbar Spinal Stenosis)(Ganshenbuzu and Fengshiyuzu Syndrome).Methods:120 LSS patients fit the inclusion criteria were separated into two groups,90 in the experimental group and 30 in the control group.No significant difference was existed in the basic data between the two groups.The experimental group was given Shujinjianyao Pill and Danlutongdu Tablet Simulator orally,while the control group was given Shujinjianyao Pill Simulator and Danlutongdu Tablet orally for 4 weeks.The VAS score,total TCM(Traditonal Chinese Medcine)syndrome score and single TCM symptom score on day 0,14 and 28 were observed,and adverse reactions were recorded.Result:There were significant differences in total TCM syndrome score between the two groups at baseline,14 day and 28 day(P<0.01).There was a significant difference in total TCM syndrome score between the two groups at 28 day(P<0.05).Significant differences were existed between this two groups in total effective rate of total TCM syndromes and waist-knee pain-weak in single TCM syndromes on the 28 day(P<0.05).There was no significant difference in the incidence of adverse events and serious adverse events between the two groups(P>0.05).Conclusion:Shujinjianyao Pill is effective on TCM syndromes in the treatment of Ganshenbuzu and fengshiyuzu syndrome LSS,especially in improving the score of total TCM syndromes and waist-knee pain-weak of single TCM syndrome,and has high safety.展开更多
基金This study was supported by the National Natural Science Foundation of China(31900372)Tangjiahe National Nature Reserve,Yushu Prefecture Forestry and Grassland Bureau,“One Yangtze”Project of Huatai Securities(HTSC)the State Key Laboratory of Biocontrol(Sun Yat-Sen University)。
文摘As a top predator,the Eurasian otter(Lutra lutra)is an indicator of healthy freshwater ecosystems and a flagship species for conservation.Once widespread in China,the species is now distributed mainly in the upper reaches of the great rivers of western China.However,a lack of knowledge on local otter populations continues to hinder their conservation in China.Here,we conducted a detailed study on habitat use of Eurasian otters in Yushu City and Tangjiahe National Nature Reserve in western China using transect surveys.At both study sites,otters preferred to defecate on large rocks close to or protruding from the river and about 50 cm above the waterline.In Yushu,no spraints were found along the 5 km river bank section in the downtown area,with otters preferring sprainting sites with natural banks,riparian zones,and lower human population density.However,this pattern was not obvious at Tangjiahe,where river transformation and human disturbance are minor.Otter river use intensity was negatively correlated with elevation and human population density in Yushu in both seasons.In Tangjiahe,otter river use intensity was positively correlated with prey mass and flow rate and negatively correlated with human population in spring,but positively correlated with human population and negatively correlated with flow rate in autumn.These results reflect the flexible habitat use strategies of otters at different sites,underlining the necessity to study otters living in different regions and habitat types.We provide suggestions for river modification and call for more site-specific studies to promote otter conservation in China.
基金Chindu County Government,Chindu Environment Protection&Forestry Bureau,Administration Bureau of Three-River-Source National Park and"One Yangtze"Project of Huatai Securities(HTSC)。
文摘DEAR EDITOR,In mid-September 2018,during a field survey in Chiat'ung,Sanjiangyuan(Three-River-Source)Region,Tibetan Plateau,China,we discovered the first active breeding den of the Chinese mountain cat(Felis bieti),inhabited by one adult female and two kittens.Based on fieldwork over the following months,five breeding dens were discovered,and 33 sightings were recorded.
基金Guangdong science and technology plan project(No.2013A032500020)
文摘Objective:To observe the TCM(Traditonal Chinese Medcine)syndromes effect and safety of Shujinjianyao Pill in the treatment of LSS(Lumbar Spinal Stenosis)(Ganshenbuzu and Fengshiyuzu Syndrome).Methods:120 LSS patients fit the inclusion criteria were separated into two groups,90 in the experimental group and 30 in the control group.No significant difference was existed in the basic data between the two groups.The experimental group was given Shujinjianyao Pill and Danlutongdu Tablet Simulator orally,while the control group was given Shujinjianyao Pill Simulator and Danlutongdu Tablet orally for 4 weeks.The VAS score,total TCM(Traditonal Chinese Medcine)syndrome score and single TCM symptom score on day 0,14 and 28 were observed,and adverse reactions were recorded.Result:There were significant differences in total TCM syndrome score between the two groups at baseline,14 day and 28 day(P<0.01).There was a significant difference in total TCM syndrome score between the two groups at 28 day(P<0.05).Significant differences were existed between this two groups in total effective rate of total TCM syndromes and waist-knee pain-weak in single TCM syndromes on the 28 day(P<0.05).There was no significant difference in the incidence of adverse events and serious adverse events between the two groups(P>0.05).Conclusion:Shujinjianyao Pill is effective on TCM syndromes in the treatment of Ganshenbuzu and fengshiyuzu syndrome LSS,especially in improving the score of total TCM syndromes and waist-knee pain-weak of single TCM syndrome,and has high safety.
