ZS 2021 Vol. 60-56 - Zoological Studies

*Correspondence: [email protected] (Lin) E-mail: [email protected] (Chiu) 3Center for Marine Environmental Studies (CMES), ... Vol.60,2021 (update:2021.07.09;09.16)  EffectsofFarmingSystemson InsectCommunitiesinthePaddyFieldsofaSimplifiedLandscapeDuring aPest-controlIntervention DChao-Nien Koh1,§,Ming-ChihChiu2,3,4,§,Ling-MuJaung1, Yung-JenLu1,andHsing-JuhLin2,* doi:10.6620/ZS.2021.60-56 1Division ofForestProtection,TaiwanForestryResearchInstitute,Taipei100, Taiwan.E-mail:[email protected](Koh);[email protected](Jaung); [email protected](Lu) 2DepartmentofLifeSciencesandInnovationand DevelopmentCenterofSustainableAgriculture,NationalChungHsing University,Taichung402,Taiwan.*Correspondence: [email protected](Lin) E-mail:[email protected](Chiu) 3CenterforMarineEnvironmentalStudies(CMES),Ehime University,Ehime790-8577,Japan 4DepartmentofEntomology,NationalChungHsing University,Taichung402,Taiwan §CNKandMCCcontributed equallytothework. Received13March2021/Accepted1July2021 CommunicatedbyTeng-ChiuLin Agriculturalintensificationisone ofthemajorthreatstoglobalbiodiversityandecosystemservices. Sustainablemanagementofagriculturallandscanreducetheseimpacts, butfeweffortshavebeenmadeinthecontextofpaddyricefields, especiallyinsimplifiedlandscapescomposedoflargemonocultures separatedbyfragmentsofnaturallands,suchasinTaiwanorelsewhere inAsia.Inthisstudy,duringapestcontrolintervention,weexamined theeffectsofmanagementpracticesoninsectcommunitiesunder conventionalandorganicfarmingsystemsinthepaddyfieldsof northernTaiwanin2016.Ourresultsshowedthatorganicpracticesdid notincreasethespeciesrichnessorabundanceofthefourinsect groups(total,predators/parasitoids,pests,andotherinsects).In addition,thecompositionoftheinsectcommunitiesdidnotdiffer betweenorganicandconventionalfarmingsystems.Boththeabundance andrichnessofpredator/parasitoidinsectsweresimilarbetween conventionalandorganicfarmingsystems.Thepestabundanceinthe organicsystemscouldbesuppressedbyotherunmeasuredpredatorsand integratedmanagementpractices,whichshowedsimilarlevelstothe conventionalsystemswithpesticideapplications.Theresultsofthis studysuggestthatfarmingsystemsmaynotinfluenceinsect biodiversityinsimplifiedlandscapesduringpest-controlintervention. Keywords:Biodiversity, Conventionalproduction,Organicproduction,Sustainability,Pesticide. Citation:KohCN,ChiuMC,JaungLM,Lu YJ,LinHJ.2021.Effectsoffarmingsystemsoninsectcommunitiesin thepaddyfieldsofasimplifiedlandscapeduringapest-control intervention.ZoolStud60:56. doi:10.6620/ZS.2021.60-56. Supplementary Materials:Fig.S1〡TableS1