Zaj dab neeg no yog ib yam khoom ntawm tus Mississippi River Basin Ag & Lub Rooj Dej, ib qho kev tshaj tawm xov xwm ywj pheej raws li hauv University of Missouri Lub Tsev Kawm Ntawv ntawm Kev Sau Xov Xwm hauv kev koom tes nrog Kev Qhia Txog Asmeskas thiab tau txais nyiaj los ntawm Walton Family Foundation. Wisconsin Saib yog ib tug tswv cuab ntawm lub network. Sau npe rau peb tsab ntawv xov xwm kom tau txais peb cov xov xwm ncaj qha rau koj lub inbox.
Tsoom Fwv Teb Chaws thiab lub xeev cov koom haum siv nyiaj ntau lab daus las txhua xyoo txhawm rau txhawm rau rhuav tshem cov carp tawm ntawm Great Lakes. Lub caij no, tsawg kawg yog 25 hom kev puas tsuaj - zoo li cov dej fleas thiab ntshav liab cw - tab tom nyob ze rau ntawm Mississippi River Basin.
Invasive silver carp tau invaded ze li ntawm txhua feem ntawm Mississippi River twb, devouring plankton thiab tawm hauv ib haiv neeg ntses xws li walleye, perch thiab whitefish mus tshaib plab.
Qhov ntawd yog qhov coj tus kws tshawb fawb Jim Lamer thiab nws cov neeg coob tawm ntawm lub nkoj electrofishing ntawm Illinois River hnub sov sov. Muaj ntau cov carp nyiaj ntawm no dua li nyob txhua qhov chaw hauv ntiaj teb. Lamer khiav lub Illinois River Biological chaw nres tsheb hauv Havana, Ill., uas yog kwv yees li 200 mais sab qab teb ntawm Chicago, nyob rau sab qaum teb ntawm qhov chaw uas tus dej ntsib Mississippi ze St.
Lamer hais tias, "Lawv yog cov neeg noj zaub mov tsis zoo," thiab lawv tau noj lub hauv paus ntawm lub vev xaib zaub mov.
Qhov ntawd yog qhov phem rau cov neeg nuv ntses thiab tsis zoo rau lub ecosystem.
Invasive carp tau qhia hauv Asmeskas hauv xyoo 1970 los tswj algae hauv cov pas dej aquaculture. Cov ntses pib tig mus rau hauv Illinois tus dej hauv xyoo 90s, tab sis cov pej xeem yeej tawm hauv nruab nrab xyoo 2000s. Tam sim no muaj carp ntau dua li lwm cov ntses hauv Illinois River thiab cov tub ceev xwm tab tom sim ua kom lawv tawm ntawm Great Lakes.
Thaum Lamer pab neeg tig rau lub nkoj electrofishing, hluav taws xob poob rau hauv dej thiab stunned carp ya ob peb taw rau saum huab cua, npuaj lub nkoj thiab dej thaum lawv tsaws. Ob peb ntawm lawv txawm tsaws hauv lub nkoj.
Niaj hnub no, Lamer hais tias, carp tsuas yog ib feem ntawm lub neej txhua hnub. Nws yog tus invader loj tom ntej uas nws txhawj xeeb txog. Lamer hais tias, "Koj hnov cov lus ceeb toom ntawm tej yam uas pib ua lawv txoj kev los ntawm sab qab teb lossis sab qaum teb," uas tuaj yeem yog tus tom ntej uas tuaj yeem hloov pauv lub vev xaib zaub mov lossis kev nplua nuj thiab ntau haiv neeg ntawm cov ntses uas peb muaj nyob ntawm no.
Robert Hirschfeld tau siv sijhawm ntau tshaj kaum xyoo los kawm txog qhov cuam tshuam ntawm cov kab mob hauv dej hauv Illinois cov dej rau Prairie Rivers Network, pab pawg neeg tawm tswv yim tsis muaj txiaj ntsig. Nws hais tias nyiaj carp tsuas yog ib qho ntawm ntau yam kab tsuag uas tsis xav tau uas tuaj yeem ua teeb meem rau Illinois thiab Mississippi Rivers.
Hirschfeld tau hais tias "Carp tau txais feem ntau ntawm kev saib xyuas thiab feem ntau ntawm cov nyiaj nyob rau hauv cov nqe lus ntawm invasive hom," hais tias Hirschfeld. "Tab sis muaj ntau lwm hom tsiaj uas hem yuav los rau hauv Illinois dej."
Cov tsiaj xws li ntses nuv ntses dej flea thiab ntshav liab cw - uas tuaj yeem ua phem dua li cov carp invasive. Ntau tus ntawm lawv caij tsheb hauv cov dej ballast ntawm cov nkoj uas los ntawm Great Lakes St. Lawrence Seaway.
US Army Corps of Engineers tab tom kawm txog qhov teeb meem. Nws muab lub Great Lakes thiab Mississippi River Interbasin Study nyob rau hauv 2014, uas tshawb nrhiav cov kev xaiv rau kev ua kom invasive hom los ntawm kev sib kis ntawm ob txoj kev dej. Nws pom tias 25 hom tuaj yeem cuam tshuam cov dej ecosystems, uas yog qee qhov biodiverse tshaj plaws hauv ntiaj teb.
Reuben Keller ua tus thawj coj hauv chav kuaj dej ecology tawm ntawm Loyola University hauv Chicago, qhov chaw uas nws tau tshawb fawb txog qhov tsis muaj kev nyab xeeb uas twb muaj lawm tiv thaiv kev tawm tsam kom tsis txhob rov qab los ntawm Illinois River thiab Great Lakes.
Keller hais tias "Peb paub tias cov ntses nuv ntses dej, peb paub tias cov ntses liab liab, tau mus rau qhov chaw siab heev hauv Lake Michigan," Keller hais. "Qhov ntawd ua rau peb txhua yam kev txhawj xeeb thiab sim ua kom muaj zog, ua kom lawv tawm ntawm lwm qhov dej tsis huv."
Cov Tub Rog Tub Rog tau tsim cov kev cuam tshuam loj heev uas raug nqi ntau lab daus las hauv ib xyoos los ua haujlwm, txhawm rau txhawm rau txhawm rau Asian carp thiab khaws cov ntses tawm ntawm lub pas dej. Tab sis ntses tsis yog qhov kev hem thawj nkaus xwb.
Keller tab tom tshawb xyuas seb cov teeb meem ua haujlwm zoo li cas rau cov pob txha tsis muaj zog - cov me me, qee zaum microscopic, spineless kab mob xws li quagga mussels, scud, dej fleas thiab ntshav liab cw.
Qhov nws pom yog tias cov teeb meem kim kim ntawm Chicago Sanitary thiab Ship Canal tuaj yeem khaws cov carp tawm tab sis cov pob txha pob txha tseem tuaj yeem hla. Hluav taws xob zap tsis tag nrho stun lawv.
Keller hais tias, "Peb paub tias cov tsiaj tsis muaj zog tau hloov mus ua ntej," thiab ua rau qee qhov teeb meem loj heev ... zoo li nees txaij thiab quagga mussels."
Cov tsiaj no tau tua cov neeg mussels, ib qho teeb meem loj hauv Illinois qhov twg 25 ntawm lub xeev 62 cov neeg mussels tam sim no tau teev tseg tias raug hem lossis muaj kev phom sij. Tsis tas li ntawd, zebra mussel tau ntxiv rau cov teeb meem kim los ntawm kev thaiv cov kav dej rau cov nroj tsuag.
Keller hais tias "Peb yuav tsum tawm mus ua qhov kev tshawb fawb los sim thiab txheeb xyuas seb qhov txaus ntshai yog dab tsi," Keller hais.
Nws hais tias qhov kev pheej hmoo zoo li no ua rau Illinois thiab Mississippi Rivers tsis paub vim tias tsis muaj kev tshawb fawb txaus, thiab tsis muaj nyiaj txaus siv los tiv thaiv kev puas tsuaj loj.
US Fish and Wildlife Service tau tsim ib qho kev soj ntsuam kev pheej hmoo rau cov kab mob nkag mus rau hauv dej thoob plaws lub pas dej loj, uas tau muab txhais ua ib daim ntawv teev npe tseem ceeb tshaj plaws ntawm cov kab tsuag tua kab. Tam sim no, tsis muaj daim ntawv teev npe sib npaug rau Mississippi River phiab.
Lub sijhawm no, Tub Rog Tub Rog tau tshaj tawm lwm txoj haujlwm kim kom tsis txhob tawm ntawm Lake Michigan: ze li ntawm $900 lab txoj kev npaj txhawm rau txhim kho qhov nyuaj ntawm cov xauv thiab hluav taws xob thiab acoustic teeb meem hauv Joliet, Ill.
Tub Rog Tub Rog tau tso cai los hais txog kev hloov pauv ntawm cov tsiaj hauv dej. Tab sis Congress tseem tsis tau hais ncaj qha nyiaj txiag los pib txoj kev kawm ntawd.
Hirschfeld tau hais tias qhov no tawm hauv lub phiab nrog lwm txoj kev daws teeb meem xwb. Cov phiaj xwm zoo li ib qho hauv Illinois yuav khaws carp tawm ntawm lub pas dej, tab sis dej fleas thiab lwm yam invertebrates tseem yuav ua rau muaj kev hem thawj rau cov dej ntws.
Hirschfeld hais tias, "Yog tias peb tuaj yeem siv nyiaj ntau lab, ntau pua lab ntawm cov pas dej loj," Hirschfeld tau hais tias, "Qhov twg yog qhov pom ntawm peb cov dej ntws, peb cov dej ntws hauv av?"
Great Lakes muaj ib compact. Lawv muaj ntau lub xeev ib puag ncig pib. Qhov ntawd yog li cas cov neeg tawm tswv yim tau txais tsheej lab ntawm tsoom fwv teb chaws kom cov kab mob invasive tawm. Tab sis Mississippi River phiab tsis muaj kev tswj hwm kev tswj hwm. Cov pab pawg Environmental lobby los tiv thaiv lub phiab thiab nws cov peev txheej ntuj, tab sis nws tsis muaj kev tswj hwm. Cov neeg tawm tswv yim hais tias, tsis muaj peev txheej ntxiv, Mississippi thiab nws cov ceg ntoo tseem nyob hauv dej tsis yooj yim.
Zaj dab neeg no yog ib yam khoom ntawm Mississippi River Basin Ag & Water Desk, ib qho kev tshaj tawm xov xwm ywj pheej raws li University of Missouri School of Journalism koom tes nrog Report For America thiab tau txais nyiaj los ntawm Walton Family Foundation.
Lub Desk xav hnov los ntawm koj - qhia cov lus nug, lus qhia, tawm tswv yim lossis tswv yim nrog peb chav xov xwm los ntawm email info@agwaterdesk.org lossis xa ntawv "MissRiver" rau 73224.
Rov luam tawm peb cov ntawv dawb, hauv online lossis luam tawm, raws li daim ntawv tso cai Creative Commons.
