Ukubhengeza iBoyd Lyon Scholar yowama-2020

Rhoqo ngonyaka, iBoyd Lyon Sea Turtle Fund ibamba isifundi somfundi webhayoloji yaselwandle ophando lwakhe lugxile kumafudo olwandle. Ophumeleleyo kulo nyaka nguAlexandra Fireman. Ngezantsi sisishwankathelo seprojekthi yakhe.

The Iprojekthi yeJumby Bay Hawksbill (JBHP) ibeke iliso ekuzaleni iifudo zolwandle ze-hawksbill eLong Island, eAntigua ukusukela ngo-1987.

Inani le-hawksbill e-Antigua libonise ukukhula kwexesha elide ukusuka kwi-1987-2015. Kodwa, amanani ezindlu zonyaka ancipha ngokuphawulekayo kwiminyaka yakutshanje. Kangangokuba, kukho imfuneko ekhawulezileyo yokuvavanya oonobangela boku kwehla, njengokuthotywa kwekhaya lezilwanyana nezityalo. IiHawksbills zifuya kwi-coral reef ecosystems kwaye zithathwa njengezona ntlobo zamatye abalulekileyo kuba ukwehla kwazo kuneziphumo ezibi kwi-ecosystem ye-reef. Ukuqonda indima ye-hawksbill kwindawo abaphila kuyo kubalulekile kulondolozo lweentlobo zazo. Kwaye, kwi-coral reef ecosystems iyonke.

Ukufundela ukutya kokuphilisana kwezilwanyana nezityalo zaselwandle eziphila ixesha elide kufuna ubuchule obutsha.

Uhlalutyo lwe-isotopu oluzinzileyo lwe-inert kunye ne-metabolism esebenzayo yezicubu isetyenziswe kwi-taxa yonke ukuqonda ukutya kwezinto eziphilayo. Ukuthi ngqo, δ¹³C kunye δ¹⁵Amaxabiso e-N asetyenziswe ngokubanzi ukuqikelela indawo yokutya kunye nenqanaba letrophic yabasebenzisi baselwandle. Ngelixa izicelo ze-isotope ezineemfudo zaselwandle zisandula ukwanda, izifundo ze-isotope ze-hawksbill aziqhelekanga. Kwaye, uhlalutyo lwexesha-uluhlu lwe-Caribbean hawksbill keratin isotope i-isotope ikakhulu ayikho kuncwadi. Uvimba wembali yetrophic egcinwe kwi-carapace keratin inokubonelela ngendlela enamandla yokuvavanya ukusetyenziswa kobutyebi zii-hawksbills kwi-ecosystems yolwalwa. Ukusebenzisa uhlalutyo lwe-isotopu oluzinzile lwe-hawksbill scute tissue kunye nezinto ezidliwayo (i-Porifera - iziponji zolwandle) ukusuka kwindawo eyaziwayo yokutya, ndiya kuvavanya iipateni zokusetyenziswa kobutyebi be-Long Island hawksbill.

Ndiza kuhlalutya iisampulu ezinqabileyo eziqokelelweyo ukuze ndifumane irekhodi ye-isotopic epheleleyo ye-keratin tissue, kwi-subset yabemi baseLong Island. Isiponji amaxabiso e-isotopu azinzileyo aya kuvumela ukuphononongwa kwe-trophic enrichment factor (umahluko phakathi kwexabiso le-isotopic ye-predator kunye nexhoba lalo) kwii-hawksbills ezivavanyiweyo. Ndiza kuphinda ndisebenzise idatha yexesha elide yokuzala kunye nolwazi olulandelelweyo lwendawo yokutya. Oku kuya kunceda ekuchongeni ezona ndawo zinemveliso nezisesichengeni ze-hawksbill kunye nokuxhasa iinzame zokhuseleko ezongeziweyo kule mimandla yaselwandle.

Funda nzulu:

Fumana okungakumbi malunga IBoyd Lyon Sea Turtle Fund apha.