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    题名 作者 年代 出处 被引量
1Tree species diversity predicts aboveground carbon storage through functional diversity and functional dominance in the dry evergreen Afromontane forest of Hararghe highland, Southeast Ethiopia显示文摘Background:Regarding the most important ecological challenges,scientists are increasingly debating the relationship between biodiversity and ecosystem function.Despite this,several experimental and theoretical researches have shown inconsistencies in biodiversity and ecosystem function relationships,supporting either the niche complementarity or selection effect hypothesis.The relationship between species diversity,functional diversity,and aboveground biomass carbon was investigated in this study employing standing aboveground carbon(AGC)stock as a proxy measure for ecosystem function.We hypothesized that(i)effects of diversity on AGC can be transmitted through functional diversity and functional dominance;(ii)effects of diversity on AGC would be greater for functional dominance than functional diversity;and(iii)effects of functional diversity and functional dominance on carbon stock varied with metrics and functional traits.Community-weighted means(CWM)of functional traits(wood density,specific leaf area,and maximum plant height)were calculated to assess functional dominance(selection effects).As for functional diversity(complementarity effects),multi-trait functional diversity(selection effects)indices were computed.We tested the first hypothesis using structural equation modeling.For the second hypothesis,the effects of environmental variables such as slope,aspect,and elevation were tested first,and separate linear mixed-effects models were fitted afterward for functional diversity,functional dominance,and the two together.Results:Results revealed that slope had a significant effect on aboveground carbon storage.Functional diversity and functional dominance were significant predictors of the aboveground carbon storage(22.4%)in the dry evergreen Afromontane forest.The effects of species richness on aboveground carbon storage were mediated by functional diversity and functional dominance of species.This shows that both the selection effects and the niche complementarity are important for aboveground carbon storage prediction.However,the functional diversity effects(niche complementarity)were greater than functional dominance effects(selection effects).Conclusions:Linking diversity and biodiversity components to aboveground carbon provides better insights into the mechanisms that explain variation in aboveground carbon storage in natural forests,which may help improve the prediction of ecosystem functions.Mengistu Teshome Wondimu Zebene Asfaw Nigussie Muktar Mohammed Yusuf 2021Ecological Processes2021,10,1:2
2Prevalence of HIV and Syphilis Infection among Men Who Have Sex with Men in China: A Meta-Analysis显示文摘Yunhua Zhou Dongliang Li Dabing Lu Yuhua Ruan Xiao Qi Ge Gao Muktar Aliyu 2014BioMed Research International2014,,:2
3Public Private Partnership (PPP) and Social Service Reform in Nigeri- a: 1999-2007显示文摘Judithmary Ogochukwu Iloh Muktar Bahir 2013Journal of Educational and Social Research Special Issue2013,,:1
4Field observations on nitrogen catch crops显示文摘J. Vos P.E.L. van der Putten Muktar Hassan Hussein A.M. van Dam P.A. Leffelaar 1998Plant and Soil1998,,1:1
5Rapid detection and quantitation of hepatitis B virus DNA by real-time PCR using a new fluorescent (FRET) detection system显示文摘Sani Hussein Aliyu Muktar Hassan Aliyu Hamisu M Salihu Surendra Parmar Hamid Jalal Martin David Curran 2003Journal of Clinical Virology2003,,2:1
6Dynamics of the HIV Epidemic in MSM显示文摘Yujiang Jia Muktar H. Aliyu Z. Jennifer Huang 2014BioMed Research International2014,,:1
7Tea polyphenols: prevention of cancer and optimizing health显示文摘Muktar H Ahmad N 2000American Journal of Clinical Nutrition2000,71,:1
8Two domains unique to osteoblast specific transcription factor Osf2/ Cbfa1 contribute to it s transactivation function and it s inability to heterodimerize with Cbf显示文摘Kannan T Muktar M Keith WM 1998J Mol Cell Biol1998,18,:1
9Perinatal mortality associated with abruptio placenta in singletons and multiples显示文摘Hamisu M. Salihu Brigitte Bekan Muktar H. Aliyu Dwight J. Rouse Russell S. Kirby Greg R. Alexander 2005American Journal of Obstetrics and Gynecology2005,,1:1
10Hospitalizations and healthcare costs associated with serious, non-lethal firearm-related violence and injuries in the United States, 1998-2011显示文摘Objective:To describe the prevalence,trends,correlates,and short-term outcomes of inpa-tient hospitalizations for firearm-related injuries(FRIs)in the United States between 1998 and 2011.Methods:We conducted a retrospective,cross-sectional analysis of inpatient hospitalizations using data from the Nationwide Inpatient Sample.In addition to generating national prevalence estimates,we used survey logistic regression to calculate odds ratios(ORs)and 95%confidence intervals(CIs)for the association between FRIs and patient/hospital-level characteristics.Tempo-ral trends were estimated and characterized using joinpoint regression.Results:There were 10.5 FRIs(95%CI:9.2-11.8)per 10,000 non-maternal/neonatal inpatient hospitalizations,with assault accounting for 60.1%of FRIs,followed by unintentional/accidental(23.0%)and intentional/self-inflicted FRIs(8.2%).The highest odds of FRIs,particularly FRIs associated with an assault,was observed among patients 18-24 years of age,patients 14-17 years of age,patients with no insurance/self-pay,and non-Hispanic blacks.The mean inpatient length of stay for FRIs was 6.9 days;however,4.7%of patients remained in the hospital over 24 days and 1 in 12 patients(8.2%)died before discharge.The mean cost of an inpatient hospitalization for a FRI was$22,149,which was estimated to be$679 million annually;approximately two-thirds of the annual cost(64.7%)was for assault($439 million).Conclusion:FRIs are a preventable public health issue which disproportionately impacts younger generations,while imposing significant economic and societal burdens,even in the ab-sence of fatalities.Prevention of FRIs should be considered a priority in this era of healthcare cost containment.Jason L.Salemi Vikas Jindal RoneéE.Wilson Mulubrhan F.Mogos Muktar H.Aliyu Hamisu M.Salihu 2015Family Medicine and Community Health2015,3,2:0
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