Simemezela i-Boyd Lyon Scholar yango-2020

Minyaka yonke, iBoyd Lyon Sea Turtle Fund isingatha umfundaze womfundi wesayensi yebhayoloji yasolwandle ocwaningo lwakhe lugxile ezimfudumeni zasolwandle. Ophumelele kulo nyaka ngu-Alexandra Fireman. Ngezansi isifinyezo sephrojekthi yakhe.

The I-Jumby Bay Hawksbill Project (JBHP) ibiqapha izimfudu zasolwandle ezizalela ama-hawksbill e-Long Island, e-Antigua kusukela ngo-1987.

Inani lama-hawksbill e-Antigua libonise ukukhula kwesikhathi eside kusukela ngo-1987-2015. Kodwa, izinombolo zokuzalela izidleke zonyaka zehle ngokuphawulekayo eminyakeni yamuva. Ngakho-ke, kunesidingo esisheshayo sokuhlola izimbangela zalokhu kwehla, njengokucekelwa phansi kwendawo edla ukudla. Ama-Hawksbill adla i-coral reef ecosystems futhi athathwa njengezinhlobo zamatshe ayinhloko ngenxa yokuthi ukwehla kwawo kunemiphumela elimazayo ku-ecosystem yezixhobo. Ukuqonda indima yama-hawksbill endaweni yabo kubalulekile ekulondolozweni kwezinhlobo zabo. Futhi, ye-coral reef ecosystem iyonke.

Ukutadisha i-ecology yokudla kwezilwane zasolwandle eziphila isikhathi eside kudinga amasu amasha.

Ukuhlaziywa kwe-isotopu okuzinzile kwezicubu ezingasebenzi kanye ne-metabolically asebenzayo kusetshenziswe kuyo yonke i-taxa ukuze kuqondwe izidlo zezinto eziphilayo. Ngokuqondene, δ¹³C no δ¹⁵Amanani e-N asetshenziswe kabanzi ukubikezela indawo yokudla kanye nezinga eliphansi labathengi basolwandle. Nakuba izicelo ze-isotope ezinezimfudu zasolwandle zisanda ukwanda, izifundo ze-isotope zama-hawksbill azivamile kangako. Futhi, ukuhlaziya kochungechunge lwesikhathi lokuqanjwa kwe-Caribbean hawksbill keratin isotope akukho ikakhulukazi ezincwadini. Ingobo yomlando yomlando we-trophic elondolozwe ku-carapace keratin ingase inikeze indlela enamandla yokuhlola ukusetshenziswa kwensiza ngama-hawksbill kuma-ecosystems asogwini. Ngisebenzisa ukuhlaziya okuzinzile kwe-isotopu kwezicubu ze-hawksbill scute kanye nezinto ezizingelayo (i-Porifera - izipontshi zasolwandle) kusuka endaweni eyaziwayo yokudla, ngizohlola amaphethini okusetshenziswa kwezinsiza zenani labantu base-Long Island hawksbill.

Ngizohlaziya amasampula amahle aqoqiwe ukuze ngithole irekhodi eliphelele le-isotopic lezicubu ze-keratin, kusethi encane yabantu base-Long Island. Amanani e-isotope ezipontshi azovumela ukuhlolwa kwe-trophic enrichment factor (umehluko phakathi kwevelu ye-isotopic yesilwane esizingelayo kanye nenyamazane yaso) kuma-hawksbill ahloliwe. Ngizophinde ngisebenzise idatha yokuzala yesikhathi eside kanye nolwazi lwendawo elandelwayo. Lokhu kuzosiza ekuhlonzeni izindawo ezikhiqiza kakhulu nezisengozini yama-hawksbill futhi kusekele imizamo yokuvikela ekhulayo yalezi zindawo zasolwandle.

Funda kabanzi:

Thola okuningi mayelana I-Boyd Lyon Sea Turtle Fund lapha.