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© 2019 AIS Unit created by the Flathead Lake Biological Station and the Flathead Lakers. Funded by the Montana Department of Natural Resources and Conservation, FLBS, and Flathead Lakers. BE AIS Aware Unit Most Unwanted AIS Poster Do you ever wonder which aquatic invasive species are a threat to your area? ¿ Grade Level Middle School ¿ Subject Areas Life Science, Environmental Science, Ecology, and Human Impacts ¿ Key Topics Aquatic invasive species, native, non-native, adaptations ¿ Duration Preparation Time: 20 min Activity Time: 50 min. (2x) ¿ Setting Classroom (Individual or in pairs) ¿ Skills Researching; Communicating Overview Students will create an informational poster about aquatic invasive species (AIS) that are a threat to their local environment and economy. The poster may be completed as either an electronic document or as a hard-copy poster. To educate the school community, the finished posters can be posted in the school and/or compiled into a document that can be shared electronically. Objectives Students will be able to: research an AIS that is a threat to the region. identify local habitats that the AIS could potentially invade. determine traits that make the non-native species invasive. describe ways AIS may disturb local lakes, streams, or rivers and impact the local economy. explain how an AIS invasion can be prevented and detected. Materials Warm Up/Activity Student worksheets #1-5 and teacher resource worksheet #1 Laminated teacher resource worksheets #2-3 Computer and projector for the instructor Computer/chromebook and printer access for each student Electronic poster: Individual access to presentation software (ex. PowerPoint, Keynote, Google Slides, Prezi, etc.) Hardcopy poster: 8 ½” x 11” assorted colored paper or construction paper, scissors, rulers, glue, and colored pencils Advanced Preparation Copy the student worksheets #1-4 (double-sided). Copy the student worksheet #5 and teacher resource worksheet #1 (single-sided). Pull out the laminated teacher resource worksheets #2-3. Acquire student access to a computer/chromebook and printer. For the hard-copy poster: Gather the poster paper, scissors, rulers, glue, and colored pencils for the students to use in class. Prior to class, pre-load the Most Unwanted AIS Poster example from the thumb drive or on our website: https://flbs.umt.edu/newflbs/k12teachingmaterial ² Standards NGSS & MT Science Stds: LS2.C: Ecosystem Dynamics, Functioning, and Resilience LS4.C: Adaptation CROSSCUTTING CONCEPTS: Stability and Change Cause and Effect SCIENTIFIC & ENGINEERING PRACTICES: Obtaining, Evaluating, and Communicating Information COMMON CORE: WHST.6-8.4: Produce clear and coherent writing in which the development, organization, and style are appropriate to task, purpose, and audience.

AIS Lesson 5 Most Unwated AIS Poster lessonplan final · ¿ Warm Up (5 minutes) • Pass out the student warm up worksheets (#1-2). • Prompt: Examine the provided photographs, maps,

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©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandtheFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

BEAISAwareUnit

Most Unwanted AIS Poster Doyoueverwonderwhichaquaticinvasivespeciesareathreattoyourarea?

¿ GradeLevelMiddleSchool

¿ SubjectAreasLifeScience,EnvironmentalScience,Ecology,andHumanImpacts

¿ KeyTopicsAquaticinvasivespecies,native,non-native,adaptations

¿ DurationPreparationTime:20minActivityTime:50min.(2x)

¿ SettingClassroom(Individualorinpairs)

¿ SkillsResearching;Communicating

OverviewStudentswillcreateaninformationalposteraboutaquaticinvasivespecies(AIS)thatareathreattotheirlocalenvironmentandeconomy.Thepostermaybecompletedaseitheranelectronicdocumentorasahard-copyposter.Toeducatetheschoolcommunity,thefinishedposterscanbepostedintheschooland/orcompiledintoadocumentthatcanbesharedelectronically.

ObjectivesStudentswillbeableto:• researchanAISthatisathreattotheregion.• identifylocalhabitatsthattheAIScouldpotentiallyinvade.• determinetraitsthatmakethenon-nativespeciesinvasive.• describewaysAISmaydisturblocallakes,streams,orriversandimpactthelocaleconomy.

• explainhowanAISinvasioncanbepreventedanddetected.

MaterialsWarmUp/Activity• Studentworksheets#1-5andteacherresourceworksheet#1• Laminatedteacherresourceworksheets#2-3• Computerandprojectorfortheinstructor• Computer/chromebookandprinteraccessforeachstudent• Electronicposter:Individualaccesstopresentationsoftware(ex.PowerPoint,Keynote,GoogleSlides,Prezi,etc.)

• Hardcopyposter:8½”x11”assortedcoloredpaperorconstructionpaper,scissors,rulers,glue,andcoloredpencils

AdvancedPreparation• Copythestudentworksheets#1-4(double-sided).• Copythestudentworksheet#5andteacherresourceworksheet#1(single-sided).

• Pulloutthelaminatedteacherresourceworksheets#2-3.• Acquirestudentaccesstoacomputer/chromebookandprinter.• Forthehard-copyposter:Gathertheposterpaper,scissors,rulers,glue,andcoloredpencilsforthestudentstouseinclass.

• Priortoclass,pre-loadtheMostUnwantedAISPosterexamplefromthethumbdriveoronourwebsite:https://flbs.umt.edu/newflbs/k12teachingmaterial

² StandardsNGSS&MTScienceStds:LS2.C:EcosystemDynamics,Functioning,andResilienceLS4.C:AdaptationCROSSCUTTINGCONCEPTS:StabilityandChangeCauseandEffectSCIENTIFIC&ENGINEERINGPRACTICES:Obtaining,Evaluating,andCommunicatingInformationCOMMONCORE:WHST.6-8.4:Produceclearandcoherentwritinginwhichthedevelopment,organization,andstyleareappropriatetotask,purpose,andaudience.

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

BackgroundNorthwestMontanaishometoaquatichabitatsrichindiverseaquaticplants,insects,crustaceans,amphibians,fish,mammals,andbirds.Thestreams,rivers,wetlands,lakes,andpondsintheregionsupportatremendousvarietyofnativewildlife, andcreatea senseofplaceunlikeanyother in the country. Imagine theFlatheadValleywithouttheFlatheadRiver,FlatheadLake,orthesurroundingwetlands.Theclear,cleanwaterthatwerelyuponforourrecreation,drinkingwater,tourism,agriculture,andultimatelyourwayoflifeisundersiegefrom non-native, aquatic invasive species (AIS) that have the potential to alter this beautiful landscapepermanently.Eurasianwatermilfoil,curly-leafpondweed,andfloweringrusharejustsome of the many aquatic invasive species that are already foundwithin our watershed. Being able to identify the AIS threats and tounderstand theadaptations thatmake them invasive, alongwith theways thatwe can prevent the spread of these species, is knowledgethateveryoneinthecommunityshouldhave.The headwaters of the Columbia RiverWatershed flow through ourvalleysastheymaketheirwaytowardsthePacificOcean.Astheypassthrough this region, they can pick up and transport invasive speciesdownstream. The Columbia River Watershed is the last majorwatershed in the country that has not been invaded by zebra andquagga mussels. These mussels spread easily through microscopic,planktonicveligers(larvae)thatcandriftwiththewatercurrents.Oncethesemussels enter awater body, it is very difficult to contain themandvirtuallyimpossibletoeffectivelyeradicatethem.Asaresult,itwilltakea community-wideeffort toprevent the spreadof theseharmfulmusselsthroughoutMontana,Idaho,Washington,andOregon.Nowmorethanever,itiscriticaltobeAISaware,andtopromotethatawarenessthroughoutourcommunity.CreatingpublicAISawarenesscanbegin intheclassroomandstretchbeyondtheschoolwallsbysharingtheproductsofthislessontotheschoolandsurroundingcommunity.

VocabularyAdaptations–Physical,chemical,orbehavioralcharacteristicsoforganisms,whichallowsthemtoliveinparticularenvironments.Aquaticinvasivespecies(AIS)–Aquatic,non-nativespeciesthatcauseeconomicorenvironmentalharm.Nativespecies–Anindigenousspecieshistoricallyfoundinanecosystem.Non-nativespecies–Aspeciesthathasbeenmovedoutsideofitsnaturalgeographicrange.

Procedure¿ WarmUp(5minutes)

• Passoutthestudentwarmupworksheets(#1-2).• Prompt:Examinetheprovidedphotographs,maps,andlifecyclediagram.Identifyanddescribethe

problemandwhereitisoccurringintheUnitedStatesandMontana.• Ask1-2studentstosharewhattheythinktheproblemis.• Ask1-2studentstosharewherethisproblemisoccurring.• ExplainthatthiswarmupactivityisanintroductiontooneAISthreattoMontanaandthattheywillbe

takingamorein-depthlookatonespecificspeciesforthisAISposterproject.

Photocredit:CaliforniaDepartmentofFishandWildlife(publicdomain)

Zebraandquaggamusselveligerslookalikewhenviewedfromalightmicroscope.PolymeraseChainReaction(PCR)andgeneticsequencingwasusedtoconfirmtheidentityofthezebramussellarvaeinthephotoabove.

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

Procedure¿ TheActivity(90minutes)

• PassouttheAISMini-Posterworksheets(#3-4)andtheAISPosterResearchGuideworksheets(#5-6).• Describetheposterprojectandrequirementstothestudents.• Haveeachstudentselectoneaquaticinvasivespeciesfromtheprovidedlist.Recordthestudents’names

ontheAISPosterSignUpSheet.• AskthestudentstofirstcompletetheAISPosterResearchGuideastheyconducttheirresearch.• Next,havethestudentssketchoutaroughdraftoftheirposterlayoutonthebackoftheirworksheet.• Lastly,havethestudentscreateeitheranelectronicorhardcopypostertosharewiththeclass.

¿ WarmDown(5minutes)• Prompt:Whatmakesyouraquaticinvasivespeciesharmful?• Studentsmaysharetheirresponseverbally,electronically,oronpaper(ex.post-itnote,indexcard,etc.).

¿ OPTIONALPosterGallery(30minutes)• Arrangethemini-postersaroundtheclassroomsothatstudentscanfreelymoveandmakeobservations.• PassoutthePosterGalleryworksheet(#7).• Directthestudentstoselect5posters,tocompletetheprovidedtable,andtoanswerthethreesummary

questionsatthebottomoftheworksheet.

Note–ThepostergallerycanbeconductedafterschoolforparentsandcommunitymemberstolearnaboutlocalAISthreats.TheseposterscanalsobepostedintheschoolcommonareastopromoteAISawareness.Alternatively,theposterscanbescannedintoadocumentthatcouldbedistributedtotheschoolcommunityelectronically.

TeacherResourcesAssessmentOptionsHavestudents:• createtheprojectposterasdescribed.• completea3-minuteposterpresentationtoeducatetheirpeers.• conductapostergalleryforstudents(andcommunitymembers)tolearnaboutlocalAISthreats.

Modifications• Eitherremoveoraddposterelementstoadjustthedifficultyleveloftheproject.• Theworksheetscanbeenlargedforstudentsinneedoflargertext.• Ifdesired,sharethefollowingGoogleSlidestemplatewithyourstudents:

https://docs.google.com/presentation/d/1uHnS_CpWdsTCLqHR_14Wp3mPUae_VV6uoz0SoDGXlYE

ExtensionsStudentscan:• designabumperstickerorcreateamovietrailertopromoteAISpreventionandawareness.

OnlineResourcesMontanaFieldGuide:http://fieldguide.mt.gov/MontanaFish,WildlifeandParksAquaticInvasiveSpecieswebsite:http://fwp.mt.gov/fishAndWildlife/species/ais/YellowstoneCoordinatingCommitteeAquaticInvasiveSpeciesPocketGuide:https://docs.wixstatic.com/ugd/a0f00b_398521b0c8fc42acbc1226ea9c7a3110.pdf

AcknowledgementsManythankstoKaraBaskoatElrodSchoolandHolidayMadichatSomersMiddleSchoolfortheircontributions.

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Name

AISMini-PosterProject StudentWorksheet(1of5)

PROJECTCHALLENGE:Designyourown“MOSTUNWANTEDAIS”posterforanaquaticinvasivespeciesthatisathreattoMontanalakes,rivers,ponds,andstreams.FIRST:SelectONEofthefollowingtoresearch.Checktheboxforthetopicyouselected.* Asiaticclam(Corbiculafluminea)* Chinesemysterysnail(Cipangopaludinachinensis)* NewZealandMudsnail(Potamopyrgusantipodarum)* QuaggaMussel(Dreissenarostiformisbugensis)* Red-rimmelania(Melanoidestuberculatus)* Zebramussel(Dreissenapolymorpha)* Virilecrayfish(Orconectesvirilis)* Bloodyredshrimp(Hemimysisanomala)* Redswampcrayfish(Procambarusclarkii)* Rustycrayfish(Orconectesrusticus)* Spinywaterflea(Bythotrepheslongimanus)* Bigheadcarp(Hypophthalmichthysnobilis)* Asianswampeel(Monopterusalbus)* AmericanBullfrog(Lithobatescatesbeianus)

* Northernpike(Esoxlucius)* Northernsnakehead(Channaargus)* Snappingturtle(Chelydraserpentina)* Brazilianwaterweed(Egeriadensa)* Curly-leafpondweed(Potamogetoncrispus)* Didymo(Didymospheniagerminata)* Eurasianwatermilfoil(Myriophyllumspicatum)* Floweringrush(Butomusumbellatus)* Hydrilla(Hydrillaverticillata)* ParrotFeatherWater-milfoil(Myriophyllum

aquaticum)* Yellowflagiris(Irispseudacorus)* Starrystonewort(Nitellopsisobtusa)

SECOND:ResearchyourAIStopic,completetheAISPosterResearchGuideworksheet,andcreateamini-posteronan8.5”x11”paperorGoogleSlide.Pleaseincludethefollowing:

* Commonnameoftheorganism(andscientificnameifithasone).* Mugshot–Aphoto,whichmustbeproperlycited(seeexamplebelow),ordrawasketch.* WhattoLookFor–Physicalappearanceandanyotherdistinguishingcharacteristics.* Modusoperandi–Policejargonfor“modeofoperation.”Whatphysical,chemical,and/or

behavioraltraitsmakeitaninvasivespecies.* LastKnownLocation-Lastknowlocations?WherecoulditbefoundinMontana?* Hideout–Whatisitspreferredhabitat?* Armedanddangerous?–Howso?Howdoesitharmtheenvironmentand/oreconomy?* Tipsforcapture–Suggestweaponsthatcanbeusedagainstit,aswellas,waystodetectand

preventit.* Contact–Anagencyorappropriateauthoritytocontactiforganismisfound.* Miscellaneous–Atleasttwootheruniquefactsthatcouldhelpleadtoitscapture.

THIRD:CreateaPosterReferenceList* Atleasttwosources(ex.awebsite,book,orencyclopedia,etc.).* SourcematerialMUSThaveanauthor’snameorbefromareliable

organization(.gov,.org,or.edu),otherwisedoNOTuseit.* A.P.A.formatted.Seeprovidedformattingguide.* Alphabetized.* Youmustsubmititseparatelyfromyourposter.

PhotographofAmericanbullfrog.(AlanD.Wils,2006)

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

StudentWorksheet(2of5)

LAST:Reviewyourpostertomakesurethefollowingcriteriaaremet:* TypedORneatlyhandwritten.* Limitthenumberofwords.Nottoowordy,nortoosparse!* ‘Wow’factorthatengagestheviewerandhelpsthemtolearnaboutyourAIStopic!* ‘Mugshot’issketched,orcopiedandpastedfromthewebsource(butmakesureyoucitethe

sourcedirectlybeneaththeimageandincludethesourceinyourReferenceList).PosterGradingRubricUsethefollowingrubricasaguideasyoucompleteyourposter. Exceeds Meets DoesNotMeetContent * Commonandscientificname

included* Mugshotclearlydepictstheorganism

* Physicalappearanceanddistinguishingtraitsareclearlyidentifiedindetail

* Explainsindetailwhythespeciesisinvasive

* Hideoutclearlyidentified* Impactstotheenvironmentandeconomydescribedindetail

* Accuratetipsfordetectionand/orpreventionprovided

* Contactlisted* Threeormoreuniquefactsincluded

* Commonnameincluded* Mugshotisincludedbut

theorganismisdifficulttosee

* Physicalappearancedescribed

* Brieflyexplainswhythespeciesisinvasive

* Hideoutidentified* Providespotential

impacts* Minimaltipsfor

detectionand/orpreventionprovided

* Contactlisted* Twouniquefacts

included

* Organismnamenotincluded

* Mugshotwaseitherinaccurateornotincluded

* Physicalappearancevagueorinaccurate

* Invasivetraitsunclear* Hideoutnot

identified* Impactsunclear* Detectionand/or

preventiontipsnotincluded

* Contactnotlisted* Uniquefactsnot

includedFormat * Typedorartisticallyhand-

written* Posterdesignelicitsa‘WOW’* Textisnottoowordyorsparse

* Neatlyhand-written* Basicposterdesign* Textistoowordy

* Writingmessyorunclear

* Textistoosparse

ReferenceList

* ThreeormorereliablesourcesprovidedincorrectA.P.Aformat

* Mugshotproperlycitedandincludedinreferencelist

* TwosourcesprovidedinA.P.A.format

* Mugshotcitedandincludedinreferencelist

* LessthantwosourcesprovidedornotinA.P.Aformat

* Mugshotnotcited

Comments:

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

Name

AISPosterResearchGuide StudentWorksheet(3of5)OnlineresourcesthatyoumayusetofindinformationaboutyourAIStopic:MontanaFieldGuide:http://fieldguide.mt.gov/MontanaFish,WildlifeandParksAquaticInvasiveSpecieswebsite:http://fwp.mt.gov/fishAndWildlife/species/ais/YellowstoneCoordinatingCommitteeAquaticInvasiveSpeciesPocketGuide:https://docs.wixstatic.com/ugd/a0f00b_398521b0c8fc42acbc1226ea9c7a3110.pdf

CompletethefollowingasyouresearchyourAIStopic:Commonname: Scientificname:

Mugshot(Findaphotoorcreateasketch)Source/website:

PhysicalDescription:

Otherdistinguishing(unique)characteristics:

Modusoperandi(whatmakesitinvasive):

Who/whatitassociateswith:

Armedanddangerous?Howitharmstheenvironment:

Howitharmstheeconomy:

WhereitisfoundinMontana:

Hideout(preferredhabitat):

Tipsforcapture:Weaponsthatcanbeusedagainstit,aswellas,waystodetectandpreventit:

Contactiffound:

Miscellaneous(Atleasttwootheruniquefactsthatcouldhelpleadtoitscapture):1.

2.

References(recordthewebsitesthatyougetinformationfrom):

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

Name

StudentWorksheet(4of5)Usethisspacetoplanyourposterdesignandlayout:

A.P.AReferencingGuide WhatfollowsishowtocitethemostcommonlyusedsourcesinAPAformatandhowtomakeanin-textcitationforeachexample.Website:Authorlastname,firstinitialORorganization'sname.(Yearofpublication).Titleofdocument.Retrievedfrom:URL

Exampleofapersonasauthor: Howtoin-textcite:(Campellone,2007)Campellone,J.(2007).Huntington’sdisease.Retrievedfrom:http://www.nlm.nih.gov/medlineplus/en.htm

Exampleoforganizationasauthor: Howtoin-textcite:(UCMP,2005)UniversityofCaliforniaMuseumofPaleontology,Understandingevolution(2005).“Superweed”discoveredin

Britain?Retrievedfromhttp://evolution.Berkeley.edu/evolibrary

Articleinamagazineorjournal:Authorlastname,firstinitial.(Year,month,day).Titleofarticle.Nameofperiodical,issuenumber,pages.Retrievedfrom[databasename].

Example: Howtoin-textcite:(Decaestecker,2007)Decaestecker,E.,etal.(2007,Dec6).Host-parasite‘RedQueen’dynamicsarchivedinpondsediment.Nature,

7171,870-873.RetrievedfromScienceReferenceCenter.

Book:Authorlastname,firstinitial.(Yearofpublication).Titleofwork:Capitalletteralsoforsubtitle.Location:Publisher.

Example: Howtoin-textcite:(Percival,1965)Percival,M.(1965).Floralbiology.Oxford:PergamonPress.

MostUnwantedAISPoster

©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

Name PosterGallery StudentWorksheet(5of5)

Completethefollowingasyouexamine5ofyourclassmates’posters.# CommonName Whatadaptationsmake

thisspeciesinvasive?Howisitharmful? Whereisthisspecies

foundinMontana?1

2

3

4

5

Whatdoalloftheaquaticinvasivespeciesthatyoulookedathaveincommon?Inwhatwayscanthesespeciesimpactthelocaleconomy?Howcanthespreadofthespeciesbepreventedorcontrolled?

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AISPosterSignUpSheet TeacherResource(1of3)

AISPosterTopic StudentName(s)

Asiaticclam(Corbiculafluminea)

Chinesemysterysnail(Cipangopaludinachinensis)

NewZealandMudsnail(Potamopyrgusantipodarum)

QuaggaMussel(Dreissenarostiformisbugensis)

Red-rimmelania(Melanoidestuberculatus)

Zebramussel(Dreissenapolymorpha)

Virilecrayfish(Orconectesvirilis)

Bloodyredshrimp(Hemimysisanomala)

Redswampcrayfish(Procambarusclarkii)

Rustycrayfish(Orconectesrusticus)

Spinywaterflea(Bythotrepheslongimanus)

Bigheadcarp(Hypophthalmichthysnobilis)

Asianswampeel(Monopterusalbus)

AmericanBullfrog(Lithobatescatesbeianus)

Northernpike(Esoxlucius)

Northernsnakehead(Channaargus)

Snappingturtle(Chelydraserpentina)

Brazilianwaterweed(Egeriadensa)

Curly-leafpondweed(Potamogetoncrispus)

Didymo(Didymospheniagerminata)

Eurasianwatermilfoil(Myriophyllumspicatum)

Floweringrush(Butomusumbellatus)

Hydrilla(Hydrillaverticillata)

ParrotFeatherWater-milfoil(Myriophyllumaquaticum)

Yellowflagiris(Irispseudacorus)

Starrystonewort(Nitellopsisobtusa)

Other:

Other:

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WarmUp TeacherResource(2of3)

Examinetheitemsbelowandbepreparedtorespondtothetwoquestionsbelow:1.Whatistheproblem?2.Whereisitoccurring?

Eurasianwatermilfoil:

Photocredit:www.clean-flo.com

Eurasianwatermilfoil:

Photocredit:AlisonFox,U.ofFlorida,bugwood.org

Eurasianwatermilfoildistributionmap:

Photocredit:Invasive.orghttps://www.invasive.org/browse/subinfo.cfm?sub=3055

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©2019AISUnitcreatedbytheFlatheadLakeBiologicalStationandFlatheadLakers.FundedbytheMontanaDepartmentofNaturalResourcesandConservation,FLBS,andFlatheadLakers.

TeacherResource(3of3)

MontanaAquaticInvasiveSpeciesDistribution–Plants2018

Photocredit:MontanaFish,Wildlife,andParkshttps://tinyurl.com/y2fl4ak9

LifeCycleofEurasianwatermilfoilintheGreatLakesRegion

Photocredit:MichiganTechResearchInstitutehttps://mtri.org/eurasian_watermilfoil_biology.html

Eurasianwatermilfoil:• growsquicklyindensepatches.

• fragmentseasily.• displacesnativeplants,reducingfoodfornativewaterfowl.

• produceslargeamountsofdecomposingleaf-litterordetritus,whichproduceslowoxygenconditions.

• makesitdifficultfornativetrouttocatchfood.

• increasesstandingwaterandmosquitos.

• reduceslandvalues.• impactstourismandrecreation.