C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u do NASA t\u00e0i tr\u1ee3 \u0111ang s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh v\u1ec7 tinh \u0111\u1ec3 nghi\u00ean c\u1ee9u chim c\u00e1nh c\u1ee5t Ad\u00e9lie, m\u1ed9t trong nh\u1eefng lo\u00e0i \u0111\u1ed9ng v\u1eadt n\u1ed5i ti\u1ebfng nh\u1ea5t v\u00e0 \u00edt b\u00ed \u1ea9n nh\u1ea5t tr\u00ean Tr\u00e1i \u0111\u1ea5t. Ch\u00eca kh\u00f3a cho nghi\u00ean c\u1ee9u c\u1ee7a h\u1ecd l\u00e0 g\u00ec? Ph\u00e2n chim c\u00e1nh c\u1ee5t.<\/p>\n\n
Ch\u1ebf \u0111\u1ed9 \u0103n nhi\u1ec1u lo\u00e0i nhuy\u1ec5n th\u1ec3 c\u1ee7a chim c\u00e1nh c\u1ee5t Ad\u00e9lie khi\u1ebfn ph\u00e2n c\u1ee7a ch\u00fang c\u00f3 m\u00e0u h\u1ed3ng n\u1ed5i b\u1eadt, r\u1ea5t d\u1ec5 nh\u1eadn bi\u1ebft tr\u00ean h\u00ecnh \u1ea3nh v\u1ec7 tinh. B\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u nh\u1eefng h\u00ecnh \u1ea3nh n\u00e0y, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 t\u00ecm ra c\u00e1c \u0111\u00e0n chim c\u00e1nh c\u1ee5t \u1edf xa, th\u1eadm ch\u00ed t\u00e1i t\u1ea1o ch\u1ebf \u0111\u1ed9 \u0103n v\u00e0 l\u1ecbch s\u1eed c\u1ee7a c\u00e1c \u0111\u00e0n theo th\u1eddi gian.<\/p>\n\n
H\u00ecnh \u1ea3nh v\u1ec7 tinh kh\u00f4ng hi\u1ec3n th\u1ecb t\u1eebng c\u00e1 th\u1ec3 chim c\u00e1nh c\u1ee5t, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 quy m\u00f4 c\u1ee7a m\u1ed9t \u0111\u00e0n b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n c\u00e1c v\u1ebft ph\u00e2n chim c\u00e1nh c\u1ee5t m\u00e0u h\u1ed3ng t\u01b0\u01a1i.<\/p>\n\n
“Ch\u00fang t\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng di\u1ec7n t\u00edch c\u1ee7a \u0111\u00e0n, \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng v\u1ebft ph\u00e2n chim c\u00e1nh c\u1ee5t, \u0111\u1ec3 t\u00ednh ng\u01b0\u1ee3c l\u1ea1i s\u1ed1 c\u1eb7p chim c\u00e1nh c\u1ee5t trong \u0111\u00e0n”, Heather Lynch, nh\u00e0 sinh th\u00e1i h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc Stony Brook cho bi\u1ebft.<\/p>\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 d\u00e0nh 10 th\u00e1ng \u0111\u1ec3 xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng h\u00ecnh \u1ea3nh v\u1ec7 tinh c\u1ee7a c\u00e1c \u0111\u1ea3o Nam C\u1ef1c \u0111\u1ec3 t\u1ea1o ra m\u1ed9t cu\u1ed9c kh\u1ea3o s\u00e1t to\u00e0n c\u1ea7u v\u1ec1 c\u00e1c \u0111\u00e0n chim c\u00e1nh c\u1ee5t Ad\u00e9lie. Tuy nhi\u00ean, h\u1ecd nh\u1eadn ra r\u1eb1ng h\u1ecd \u0111\u00e3 b\u1ecf s\u00f3t m\u1ed9t \u0111\u00e0n l\u1edbn tr\u00ean \u0111\u1ea3o Heroina \u1edf qu\u1ea7n \u0111\u1ea3o Danger xa x\u00f4i.<\/p>\n\n
H\u1ecd s\u1eed d\u1ee5ng m\u1ed9t thu\u1eadt to\u00e1n \u0111\u1ec3 gi\u00fap h\u1ecd t\u00ecm c\u00e1c pixel m\u00e0u \u0111\u00e0o nh\u1ea1t, v\u00e0 thu\u1eadt to\u00e1n \u0111\u00e3 ph\u00e1t hi\u1ec7n ra \u0111\u00e0n chim c\u00e1nh c\u1ee5t \u1ea9n.<\/p>\n\n
“Ch\u00fang t\u00f4i ngh\u0129 r\u1eb1ng m\u00ecnh \u0111\u00e3 bi\u1ebft v\u1ecb tr\u00ed c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e0n chim c\u00e1nh c\u1ee5t [Ad\u00e9lie]”, Lynch n\u00f3i. “T\u00f4i cho r\u1eb1ng ch\u00fang t\u00f4i \u0111\u00e3 b\u1ecf s\u00f3t n\u00f3 m\u1ed9t ph\u1ea7n v\u00ec ch\u00fang t\u00f4i kh\u00f4ng ng\u1edd l\u1ea1i t\u00ecm th\u1ea5y ch\u00fang \u1edf \u0111\u00f3.”<\/p>\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang xem x\u00e9t l\u1ea1i h\u00ecnh \u1ea3nh v\u1ec7 tinh c\u00f3 t\u1eeb n\u0103m 1982 \u0111\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 s\u1ef1 gia t\u0103ng v\u00e0 suy gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a t\u1eebng \u0111\u00e0n chim c\u00e1nh c\u1ee5t Ad\u00e9lie.<\/p>\n\n
“\u0110i\u1ec1u th\u00fa v\u1ecb l\u00e0 kh\u00f4ng c\u00f3 xu h\u01b0\u1edbng r\u00f5 r\u00e0ng n\u00e0o v\u1ec1 ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y theo th\u1eddi gian, m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng thay \u0111\u1ed5i v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd”, Casey Youngflesh, m\u1ed9t nghi\u00ean c\u1ee9u sinh ti\u1ebfn s\u0129 t\u1ea1i \u0110\u1ea1i h\u1ecdc Connecticut cho bi\u1ebft. “\u0110\u00e2y l\u00e0 m\u1ed9t b\u1ea5t ng\u1edd l\u1edbn, v\u00ec s\u1ed1 l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a chim c\u00e1nh c\u1ee5t Ad\u00e9lie \u0111\u00e3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong 40 n\u0103m qua v\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng s\u1ef1 thay \u0111\u1ed5i ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 n\u00e0o \u0111\u00f3.”<\/p>\n\n
\u0110\u1ec3 ki\u1ec3m tra \u00fd t\u01b0\u1edfng c\u1ee7a m\u00ecnh, nh\u00f3m \u0111\u00e3 thu th\u1eadp ph\u00e2n chim c\u00e1nh c\u1ee5t t\u1eeb c\u00e1c \u0111\u00e0n. H\u1ecd ph\u00e1t hi\u1ec7n ra r\u1eb1ng \u01b0\u1edbc t\u00ednh ch\u1ebf \u0111\u1ed9 \u0103n c\u1ee7a h\u1ecd t\u1eeb h\u00ecnh \u1ea3nh v\u1ec7 tinh r\u1ea5t kh\u1edbp v\u1edbi nh\u1eefng g\u00ec chim c\u00e1nh c\u1ee5t th\u1ef1c s\u1ef1 \u0103n.<\/p>\n\n
Tuy nhi\u00ean, khi h\u1ecd so s\u00e1nh d\u1eef li\u1ec7u v\u1ec1 ch\u1ebf \u0111\u1ed9 \u0103n v\u1edbi c\u00e1c bi\u1ebfn \u0111\u1ed9ng v\u1ec1 quy m\u00f4 c\u1ee7a \u0111\u00e0n, h\u1ecd ng\u1ea1c nhi\u00ean khi kh\u00f4ng t\u00ecm th\u1ea5y m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd n\u00e0o.<\/p>\n\n
“\u0110\u00e2y l\u00e0 m\u1ed9t b\u1ea5t ng\u1edd l\u1edbn, v\u00ec s\u1ed1 l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a chim c\u00e1nh c\u1ee5t Ad\u00e9lie \u0111\u00e3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong 40 n\u0103m qua v\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng s\u1ef1 thay \u0111\u1ed5i ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng c\u00f3 th\u1ec3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 n\u00e0o \u0111\u00f3”, Youngflesh n\u00f3i.<\/p>\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u mu\u1ed1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng chim \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y trong m\u1ed9t s\u1ed1 \u0111\u00e0n chim c\u00e1nh c\u1ee5t Ad\u00e9lie. B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng g\u00ec \u0111ang x\u1ea3y ra l\u00e0 n\u1eafm \u0111\u01b0\u1ee3c quy m\u00f4 c\u1ee7a c\u00e1c \u0111\u00e0n v\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng t\u1ef1 nhi\u00ean c\u1ee7a ch\u00fang theo th\u1eddi gian.<\/p>\n\n
\u0110i\u1ec1u \u0111\u00f3 s\u1ebd gi\u00fap c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u qu\u1ea3n l\u00fd v\u00e0 b\u1ea3o v\u1ec7 chim c\u00e1nh c\u1ee5t khi ng\u00e0y c\u00e0ng c\u00f3 nhi\u1ec1u m\u1ed1i \u0111e d\u1ecda do con ng\u01b0\u1eddi g\u00e2y ra, bao g\u1ed3m bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu v\u00e0 \u0111\u00e1nh b\u1eaft lo\u00e0i nhuy\u1ec5n th\u1ec3, g\u00e2y \u00e1p l\u1ef1c l\u00ean n\u01a1i l\u00e0m t\u1ed5 c\u1ee7a ch\u00fang.<\/p>","protected":false},"excerpt":{"rendered":"
Chim c\u00e1nh c\u1ee5t Ad\u00e9lie: H\u00ecnh \u1ea3nh v\u1ec7 tinh ti\u1ebft l\u1ed9 quy m\u00f4 v\u00e0 ch\u1ebf \u0111\u1ed9 \u0103n c\u1ee7a \u0111\u00e0n H\u00ecnh \u1ea3nh v\u1ec7 tinh l\u00e0m s\u00e1ng t\u1ecf ph\u00e2n chim c\u00e1nh c\u1ee5t C\u00e1c…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[280],"tags":[295,1553,1556,1554,1555,1558,1557],"class_list":["post-632","post","type-post","status-publish","format-standard","hentry","category-zoology","tag-diet","tag-adelie-penguins","tag-guano","tag-satellite-images","tag-colony-size","tag-wildlife-research","tag-remote-sensing"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=632"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/632\/revisions"}],"predecessor-version":[{"id":633,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/632\/revisions\/633"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}