Kulengeza za 2020 Boyd Lyon Scholar

Chaka chilichonse, Bungwe la Boyd Lyon Sea Turtle Fund limapereka maphunziro kwa wophunzira wa sayansi ya zam'madzi yemwe kafukufuku wake amayang'ana kwambiri akamba am'nyanja. Wopambana chaka chino ndi Alexandra Fireman. Pansipa pali chidule cha polojekiti yake.

The Jumby Bay Hawksbill Project (JBHP) wakhala akuyang'anira akamba am'nyanja a hawksbill ku Long Island, Antigua kuyambira 1987.

Chiwerengero cha hawksbill ku Antigua chikuwonetsa kukula kwanthawi yayitali kuyambira 1987-2015. Koma, chiwerengero cha zisa zapachaka chatsika kwambiri m'zaka zaposachedwa. Chifukwa chake, pakufunika kuwunika mwachangu zomwe zimayambitsa kuchepa uku, monga kuwonongeka kwa malo odyetserako zakudya. Ma Hawksbill amadyera m'zachilengedwe za m'matanthwe a coral ndipo amatengedwa kuti ndi mitundu yofunikira kwambiri chifukwa kuchepa kwawo kuli ndi zotsatira zoyipa pazachilengedwe. Kumvetsetsa ntchito ya hawksbill m'malo awo ndikofunika kwambiri pakusamalira mitundu yawo. Ndipo, za chilengedwe chonse cha coral reef.

Kuphunzira za kasamalidwe ka zamoyo zam'madzi zomwe zakhala nthawi yayitali kumafuna njira zatsopano.

Kusanthula kosasunthika kwa isotopu kwa minofu ya inert ndi metabolism yomwe imagwira ntchito kwakhala ikugwiritsidwa ntchito kudutsa tax kuti imvetsetse zakudya za zamoyo. Makamaka, δ¹³C ndi δ¹⁵Makhalidwe a N akhala akugwiritsidwa ntchito kwambiri kulosera komwe kuli chakudya komanso kuchuluka kwa ogula am'madzi. Ngakhale kuti ntchito za isotopu zokhala ndi akamba am'nyanja zawonjezeka posachedwapa, maphunziro a isotopu a hawksbill sakhala ofala kwambiri. Ndipo, kusanthula kwanthawi kwamitundu ya Caribbean hawksbill keratin isotope kulibe kwenikweni m'mabuku. Zosungidwa zakale za mbiri yakale zosungidwa mu carapace keratin zitha kupereka njira yamphamvu yowunika momwe zinthu zimagwiritsidwira ntchito ndi ma hawksbill m'zachilengedwe zam'madzi. Pogwiritsa ntchito kusanthula kosasunthika kwa isotopu kwa minofu ya hawksbill ndi zinthu zodya nyama (Porifera - masiponji am'nyanja) kuchokera kumalo odziwika bwino odyetserako chakudya, ndikuwunika momwe anthu amagwiritsidwira ntchito ku Long Island hawksbill.

Ndisanthula zitsanzo zowoneka bwino kuti ndipeze mbiri yonse ya isotopic ya minofu ya keratin, pagulu la anthu aku Long Island. Masiponji okhazikika a isotopu adzalola kuwunika kwa trophic enrichment factor (kusiyana pakati pa mtengo wa isotopic wa nyama yolusa ndi nyama yake) pa ma hawksbill omwe ayesedwa. Ndikhalanso ndikugwiritsa ntchito zidziwitso zanthawi yayitali zoberekera komanso zidziwitso zamalo osaka. Izi zithandizira kuzindikira malo omwe akupanga bwino kwambiri komanso omwe ali pachiwopsezo cha hawksbill ndikuthandizira kukulitsa chitetezo chamadera am'madziwa.

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