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dc.contributor.authorMa, Jingchuan
dc.contributor.authorHuang, Xunbing
dc.contributor.authorQin, Xinghu
dc.contributor.authorDing, Yong
dc.contributor.authorHong, Jun
dc.contributor.authorDu, Guilin
dc.contributor.authorLi, Xinyi
dc.contributor.authorGao, Wenyuan
dc.contributor.authorZhang, Zhuoran
dc.contributor.authorWang, Guangjun
dc.contributor.authorWang, Ning
dc.contributor.authorZhang, Zehua
dc.identifier.citationMa , J , Huang , X , Qin , X , Ding , Y , Hong , J , Du , G , Li , X , Gao , W , Zhang , Z , Wang , G , Wang , N & Zhang , Z 2017 , ' Large manipulative experiments revealed variations of insect abundance and trophic levels in response to the cumulative effects of sheep grazing ' , Scientific Reports , vol. 7 , 11297 .
dc.identifier.otherPubMedCentral: PMC5595790
dc.identifier.otherORCID: /0000-0003-2351-3610/work/60631065
dc.descriptionThis study was supported by the National Natural Science Foundation of China, 31672485, the Earmarked Fund for China Agriculture Research System, CARS-34-07, and the Innovation Project of Chinese Academy of Agricultural Sciences.en
dc.description.abstractLivestock grazing can affect insects by altering habitat quality; however, the effects of grazing years and intensities on insect abundance and trophic level during manipulative sheep grazing are not well understood. Therefore, we investigated these effects in a large manipulative experiment from 2014 to 2016 in the eastern Eurasian steppe, China. Insect abundance decreased as sheep grazing intensities increased, with a significant cumulative effect occurring during grazing years. The largest families, Acrididae and Cicadellidae, were susceptible to sheep grazing, but Formicidae was tolerant. Trophic primary and secondary consumer insects were negatively impacted by increased grazing intensities, while secondary consumers were limited by the decreased primary consumers. Poor vegetation conditions caused by heavy sheep grazing were detrimental to the existence of Acrididae, Cicadellidae, primary and secondary consumer insects, but were beneficial to Formicidae. This study revealed variations in insect abundance and trophic level in response to continuous sheep grazing in steppe grasslands. Overall, our results indicate that continuous years of heavy- and over- sheep grazing should be eliminated. Moreover, our findings highlight the importance of more flexible sheep grazing management and will be useful for developing guidelines to optimize livestock production while maintaining species diversity and ecosystem health.
dc.relation.ispartofScientific Reportsen
dc.subjectQH301 Biologyen
dc.titleLarge manipulative experiments revealed variations of insect abundance and trophic levels in response to the cumulative effects of sheep grazingen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.description.statusPeer revieweden

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