Kuzivisa iyo 2020 Boyd Lyon Scholar

Gore rega rega, iyo Boyd Lyon Gungwa Turtle Fund inotambira mudzidzi wemarine biology ane tsvakiridzo yakanangana nekamba dzegungwa. Muhwina wegore rino ndiAlexandra Fireman. Pazasi pane pfupiso yeprojekiti yake.

The Jumby Bay Hawksbill Project (JBHP) anga achitarisa matendere ehawksbill turtles emugungwa paLong Island, Antigua kubvira 1987.

Huwandu hwehawksbill muAntigua hwakaratidza kukura kwenguva refu kubva 1987-2015. Asi, nhamba dzekuvaka matendere epagore dzakadzikira zvakanyanya mumakore achangopfuura. Zvakadai, panoda kukurumidza kuongorora zvikonzero zvekudzikira uku, sekushatiswa kwenzvimbo yekudya. MaHawksbills anofudza mucoral reef ecosystems uye anoonekwa semhando yematombo makuru nekuti kudzikira kwawo kune zvinokanganisa mhedzisiro yereef ecosystems. Kunzwisisa basa rehawksbill munharaunda yavo kwakakosha pakuchengetedza mhando dzavo. Uye, zvecoral reef ecosystems zvakazara.

Kudzidza nezve ecology yekudyara kwerudzi rwemugungwa kwenguva refu kunoda hunyanzvi hwekuita.

Yakagadzika isotopu kuongororwa kweinert uye metabolically inoshanda tishu yakashandiswa kuyambuka taxa kunzwisisa madyiro ezvipenyu. Zvikuru sei, δ¹³C uye δ¹⁵N tsika dzakashandiswa zvakanyanya kufanotaura nzvimbo yekudya uye trophic level yevashandisi vemugungwa. Nepo isotopu yekushandisa ine turtles yegungwa ichangobva kuwanda, zvidzidzo zve isotope zvehawksbill hazviwanzo kuwanda. Uye, nguva-yakatevedzana kuongororwa kweCaribbean hawksbill keratin isotope kuumbwa kunonyanya kusipo kubva mumabhuku. Nzvimbo yenhoroondo yetrophic yakachengetwa mucarapace keratin inogona kupa nzira ine simba yekuongorora mashandisirwo ezviwanikwa nehawksbills mureef ecosystems. Ndichishandisa yakagadzikana isotopu ongororo ye hawksbill scute tishu uye zvinhu zvakapambwa (Porifera - sea sponges) kubva kunzvimbo inozivikanwa yekudyara, ndichave ndichiongorora zviwanikwa zvekushandisa maitiro ehuwandu hweLong Island hawksbill.

Ini ndichaongorora akaunganidzwa scute samples kuti ndiwane yakazara isotopic rekodhi yekeratin tishu, kune subset yehuwandu hweLong Island. Sponge yakagadzikana isotopu tsika inobvumira kuongororwa kwetrophic enrichment factor (musiyano uripo pakati peiyo isotopic kukosha kwechikara nemhuka yayo) kune hawksbill yakaongororwa. Ini zvakare ndichave ndichisimudzira data yenguva refu yekubereka uye yakateedzerwa ruzivo rwenzvimbo yekutsvaga. Izvi zvichabatsira kuona nzvimbo dzinonyanya kugadzira uye dzisina njodzi dzehawksbill uye kutsigira kuwedzera kwekudzivirira kwenzvimbo idzi dzemugungwa.

Dzidza zvimwe:

Tsvaga zvimwe nezve Boyd Lyon Sea Turtle Fund pano.