TheUMAPJournalPublisherCOMAP,Inc.Vol.30,No.2ExecutivePublisherSolomonA.GarfunkelILAPEditorChrisArneyAssociateDirector,MathematicsDivisionProgramManager,CooperativeSystemsArmyResearchOfficeP.O.Box12211ResearchTrianglePark,NC27709-2211david.arney1@arl.army.milOnJargonEditorYvesNievergeltDept.ofMathematicsEasternWashingtonUniv.Cheney,WA99004ynievergelt@ewu.eduReviewsEditorJamesM.CargalMathematicsDept.TroyUniversity—MontgomeryCampus231MontgomerySt.Montgomery,AL36104jmcargal@sprintmail.comChiefOperatingOfficerLaurieW.Arag´onProductionManagerGeorgeW.WardProductionEditorJoyceBarnesDistributionJohnTomicekGraphicDesignerDaivaChauhanEditorPaulJ.CampbellBeloitCollege700CollegeSt.Beloit,WI53511–5595campbell@beloit.eduAssociateEditorsDonAdolphsonChrisArneyAaronArcherRonBarnesArthurBenjaminRobertBoschJamesM.CargalMurrayK.ClaytonLisetteDePillisJamesP.FinkSolomonA.GarfunkelWilliamB.GearhartWilliamC.GiauqueRichardHabermanJonJacobsenWalterMeyerYvesNievergeltMichaelO’LearyCatherineA.RobertsJohnS.RobertsonPhilipD.StraffinJ.T.SutcliffeBrighamYoungUniv.ArmyResearchOfficeAT&TShannonRes.Lab.U.ofHouston—DowntnHarveyMuddCollegeOberlinCollegeTroyU.—MontgomeryU.ofWisc.—MadisonHarveyMuddCollegeGettysburgCollegeCOMAP,Inc.Calif.StateU.,FullertonBrighamYoungUniv.SouthernMethodistU.HarveyMuddCollegeAdelphiUniversityEasternWashingtonU.TowsonUniversityCollegeoftheHolyCrossGeorgiaMilitaryCollegeBeloitCollegeSt.Mark’sSchool,DallasVol.30,No.22009TableofContentsGuestEditorialDiscreteMathFirst!ChrisArney.................................................................93SpecialSectionontheICMResultsofthe2009InterdisciplinaryContestinModelingChrisArney.................................................................99RebalancingHuman-InfluencedEcosystemsYuanSiZhang,ShuoPengWang,andNingCui....................................................................121StrivingforBalance:WhyReintroducingMoreSpeciestoFishFarmEcosystemYieldsBiggerProfitsSeanClement,TimothyNewlin,andJosephLucas....................
