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4篇 您的检索式:作者名="W.Macdonald"
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1Prosecution records reveal pangolin trading networks in China, 2014–2019显示文摘In a precautionary response to the current coronavirus(COVID-19)pandemic,China’s Ministries permanently banned eating and trading in terrestrial wild(non-livestock)animals on 24 February 2020,and extensively updated the list of Fauna under Special State Protection(LFSSP)in 2020 and 2021,in which pangolins(Manidae spp.)were upgraded to the highest protection level.Examining 509 pangolin prosecution records from China Judgements online prior to these changes(01/01/14–31/12/19),we identified that Guangdong,Guangxi and Yunnan Provinces were hotspots for trade in whole pangolins and their scales.Xiang-Qin Huang Chris Newman Christina D.Buesching Mei-Ling Shao Yun-Chun Ye Sha Liu David W.Macdonald Zhao-Min Zhou 2021Zoological Research2021,42,5:1
2Is habitat linearity important for small mammal communities on farmland?显示文摘F. H.Tattersall D. W.Macdonald B. J.Hart P.Johnson W.Manley R.Feber 2002Journal of Applied Ecology2002,,4:1
3紫外线辐射和污染相关胁迫因子对北极淡水生态系统的影响显示文摘气候变化很可能作为一种多重胁迫因子,对水生生态系统造成累积的和/或协同的影响。预测的温度上升以及由此带来的降水季节性特征的改变将会增加污染物流入水生生态系统的量,并且会独自提高水生生物体对污染物暴露和影响的易感性。对生物区系造成的结果在多数情况下是加和的(累积的)或倍增的(协同的),其总的结果必然是污染物负荷加重,生物放大作用(指有毒化学物质在食物链各环节中的毒性渐进)加强。同温层中臭氧和紫外线辐射季节性特征的变化也会对水生生态系统的结构和功能产生累加或协同的影响。与预测的同温层臭氧量减少这一原因相比,冰层覆盖度的降低可能对水下紫外线暴露产生更为重大的影响。紫外线辐射水平的大幅升高会导致对生物体的损伤增强(生物分子学、细胞学和生理学上的损害,以及物种组成的变化),而生物区系分配用于抵抗紫外线伤害的能量和资源也会增加,有可能使营养水平上的生产力降低。通过光化学途径,元素的通量将会增加。Frederick J.Wrona Terry D.Prowse James D.Reist John E.Hobbie Lucie M.J.Lévesque Robie W.Macdonald Warwick F.Vincent 陈欣然 2006AMBIO-人类环境杂志2006,35,7:0
4Modeling historical budget for β-Hexachlorocyclohexane(HCH)in the Arctic Ocean:A contrast to α-HCH显示文摘The historical annual loading to,removal from,and cumulative burden in the Arctic Ocean for β-hexachlorocyclohexane(β-HCH),an isomer comprising 5e12%of technical HCH,is investigated using a mass balance box model from 1945 to 2020.Over the 76 years,loading occurred predominantly through ocean currents and river inflow(83%)and only a small portion via atmospheric transport(16%).β-HCH started to accumulate in the Arctic Ocean in the late 1940s,reached a peak of 810 t in 1986,and decreased to 87 t in 2020,when its concentrations in the Arctic water and air were~30 ng m^(-3)and~0.02 pg m^(-3),respectively.Even though β-HCH and α-HCH(60e70%of technical HCH)are both the isomers of HCHs with almost identical temporal and spatial emission patterns,these two chemicals have shown different major pathways entering the Arctic.Different from α-HCH with the long-range atmospheric transport(LRAT)as its major transport pathway,β-HCH reached the Arctic mainly through long-range oceanic transport(LROT).The much higher tendency of β-HCH to partition into the water,mainly due to its much lower Henry's Law Constant than α-HCH,produced an exceptionally strong pathway divergence with β-HCH favoring slow transport in water and α-HCH favoring rapid transport in air.The concentration and burden of β-HCH in the Arctic Ocean are also predicted for the year 2050 when only 4.4-5.3 t will remain in the Arctic Ocean under the influence of climate change.Pu-Fei Yang Robie W.Macdonald Hayley Hung Derek C.G.Muir Roland Kallenborn Anatoly N.Nikolaev Wan-Li Ma Li-Yan Liu Yi-Fan Li 2023Environmental Science and Ecotechnology2023,,2:0
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