Tshaj tawm 2020 Boyd Lyon Scholar

Txhua xyoo, Boyd Lyon Sea Turtle Fund muaj nyiaj pub dawb rau cov tub ntxhais kawm biology marine uas nws kev tshawb fawb tsom mus rau cov vaub kib hauv hiav txwv. Xyoo no tus yeej yog Alexandra Fireman. Hauv qab no yog nws cov ntsiab lus ntawm qhov project.

cov Jumby Bay Hawksbill Project (JBHP) tau saib xyuas zes hawksbill hiav txwv vaub kib ntawm Long Island, Antigua txij li xyoo 1987.

Cov pej xeem hawksbill hauv Antigua nthuav tawm kev loj hlob mus ntev los ntawm 1987-2015. Txawm li cas los xij, cov naj npawb txhua xyoo zes tau poob qis hauv xyoo tas los no. Yog li ntawd, tam sim no yuav tsum tau soj ntsuam qhov ua rau ntawm qhov poob qis, xws li degradation ntawm foraging vaj tse. Hawksbills forage nyob rau hauv coral reef ecosystems thiab raug suav hais tias yog hom pob zeb vim tias lawv qhov kev poob qis muaj kev cuam tshuam loj heev rau cov ecosystems reef. Kev nkag siab txog lub luag haujlwm ntawm hawksbill hauv lawv ib puag ncig yog qhov tseem ceeb rau kev txuag ntawm lawv hom. Thiab, ntawm coral reef ecosystems tag nrho.

Kawm txog cov tsiaj txhu tsiaj txhu ntawm cov tsiaj nyob hauv hav zoov ntev yuav tsum muaj cov txheej txheem tshiab.

Kev txheeb xyuas isotope ruaj khov ntawm cov ntaub so ntswg inert thiab metabolically nquag tau siv thoob plaws taxa kom nkag siab txog cov khoom noj ntawm cov kab mob. Tshwj xeeb, δ¹³C thiab δ¹⁵N qhov tseem ceeb tau siv dav los kwv yees qhov chaw ntawm kev noj zaub mov thiab qib trophic ntawm cov neeg siv khoom hauv hiav txwv. Thaum cov ntawv thov isotope nrog cov vaub kib hauv hiav txwv tau nthuav tawm tsis ntev los no, isotope kev tshawb fawb ntawm hawksbills tsis tshua muaj. Thiab, lub sij hawm-series tsom xam ntawm Caribbean hawksbill keratin isotope muaj pes tsawg leeg feem ntau tsis tuaj ntawm cov ntaub ntawv. Cov ntaub ntawv khaws tseg ntawm keeb kwm trophic khaws cia hauv carapace keratin tuaj yeem muab txoj hauv kev zoo rau kev ntsuas kev siv cov peev txheej los ntawm hawksbills hauv reef ecosystems. Siv cov isotope ruaj khov tsom xam ntawm hawksbill scute cov ntaub so ntswg thiab cov khoom prey (Porifera - hiav txwv sponges) los ntawm ib tug paub foraging av, kuv yuav tau soj ntsuam cov kev pab cuam qauv ntawm cov Long Island hawksbill pejxeem.

Kuv yuav txheeb xyuas cov qauv scute kom tau txais cov ntaub ntawv tiav isotopic ntawm cov ntaub so ntswg keratin, rau ib pawg ntawm Long Island pejxeem. Daim txhuam cev ruaj khov isotope qhov tseem ceeb yuav tso cai rau kev tshawb nrhiav ntawm trophic enrichment yam (qhov txawv ntawm tus nqi isotopic ntawm tus tsiaj nyeg thiab nws cov tsiaj) rau cov hawksbills soj ntsuam. Kuv kuj tseem yuav tau siv cov ntaub ntawv kev ua me nyuam mus sij hawm ntev thiab taug qab cov ntaub ntawv hauv cheeb tsam foraging. Qhov no yuav pab txheeb xyuas qhov muaj txiaj ntsig zoo tshaj plaws thiab cov chaw nyob tsis muaj zog hawksbill thiab txhawb kev tiv thaiv ntxiv rau cov cheeb tsam marine.

Kawm Ntxiv:

Tshawb nrhiav dua txog qhov Boyd Lyon Sea Turtle Fund ntawm no.