{"id":18187,"date":"2024-09-30T13:01:08","date_gmt":"2024-09-30T13:01:08","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=18187"},"modified":"2024-09-30T13:01:08","modified_gmt":"2024-09-30T13:01:08","slug":"elephant-seals-surprising-source-mercury-pollution-california-coastal-waters","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/marine-biology\/elephant-seals-surprising-source-mercury-pollution-california-coastal-waters\/","title":{"rendered":"Sloni mo\u0159\u0161t\u00ed: P\u0159ekvapiv\u00fd zdroj zne\u010di\u0161t\u011bn\u00ed rtut\u00ed v pob\u0159e\u017en\u00edch vod\u00e1ch Kalifornie"},"content":{"rendered":"

Sloni mo\u0159\u0161t\u00ed: P\u0159ekvapiv\u00fd zdroj zne\u010di\u0161t\u011bn\u00ed rtut\u00ed v pob\u0159e\u017en\u00edch vod\u00e1ch Kalifornie<\/h2>\n\n

Rtu\u0165 v mo\u0159sk\u00e9m prost\u0159ed\u00ed<\/h3>\n\n

Rtu\u0165, vysoce toxick\u00fd t\u011b\u017ek\u00fd kov, p\u0159edstavuje zna\u010dnou hrozbu pro mo\u0159sk\u00e9 ekosyst\u00e9my. Jej\u00ed nej\u0161kodliv\u011bj\u0161\u00ed forma, methylrtu\u0165, se hromad\u00ed v mo\u0159sk\u00fdch organismech, zejm\u00e9na v t\u011bch, kter\u00e9 jsou na vrcholu potravn\u00edho \u0159et\u011bzce. P\u0159es \u00fasil\u00ed o sn\u00ed\u017een\u00ed emis\u00ed rtuti se i nad\u00e1le dost\u00e1v\u00e1 do oce\u00e1nu prost\u0159ednictv\u00edm pr\u016fmyslov\u00fdch odpadn\u00edch vod a dal\u0161\u00edch zdroj\u016f.<\/p>\n\n

Biomagnifikace a sentineln\u00ed druhy<\/h3>\n\n

Jak se rtu\u0165 pohybuje potravn\u00edm \u0159et\u011bzcem vzh\u016fru, st\u00e1v\u00e1 se koncentrovan\u011bj\u0161\u00ed ve vrcholov\u00fdch pred\u00e1torech. Tento proces, zn\u00e1m\u00fd jako biomagnifikace, m\u016f\u017ee v\u00e9st k nebezpe\u010dn\u011b vysok\u00fdm hladin\u00e1m rtuti u zv\u00ed\u0159at, jako jsou tuleni a lachtani. Tyto druhy slou\u017e\u00ed jako \u201esentineln\u00ed druhy\u201c a poskytuj\u00ed cenn\u00e9 poznatky o zdrav\u00ed jejich prost\u0159ed\u00ed a potenci\u00e1ln\u00edch hrozb\u00e1ch pro lidsk\u00e9 zdrav\u00ed.<\/p>\n\n

Lin\u00e1n\u00ed slon\u016f mo\u0159sk\u00fdch a uvol\u0148ov\u00e1n\u00ed rtuti<\/h3>\n\n

Ned\u00e1vn\u00fd v\u00fdzkum identifikoval slony mo\u0159sk\u00e9 jako v\u00fdznamn\u00fd zdroj zne\u010di\u0161t\u011bn\u00ed rtut\u00ed v pob\u0159e\u017en\u00edch vod\u00e1ch Kalifornie. B\u011bhem sv\u00e9ho ka\u017edoro\u010dn\u00edho \u201ekatastrofick\u00e9ho l\u00edn\u00e1n\u00ed\u201c tito obrov\u0161t\u00ed \u017eivo\u010dichov\u00e9 svl\u00e9kaj\u00ed celou svou svrchn\u00ed vrstvu k\u016f\u017ee a srsti a uvol\u0148uj\u00ed do vody zna\u010dn\u00e9 mno\u017estv\u00ed biologick\u00e9ho materi\u00e1lu. Tento materi\u00e1l obsahuje vysok\u00e9 koncentrace methylrtuti, kter\u00e1 byla spojena se zv\u00fd\u0161en\u00fdmi hladinami rtuti v okoln\u00edch vod\u00e1ch.<\/p>\n\n

V\u00fdsledky studie<\/h3>\n\n

Studie publikovan\u00e1 v Proceedings of the Royal Society B m\u011b\u0159ila hladiny rtuti ve vod\u00e1ch kolem st\u00e1tn\u00ed rezervace A\u00f1o Nuevo, hlavn\u00ed kolonie slon\u016f mo\u0159sk\u00fdch v Kalifornii. V\u00fdsledky uk\u00e1zaly, \u017ee b\u011bhem obdob\u00ed l\u00edn\u00e1n\u00ed tule\u0148\u016f byly hladiny rtuti 17kr\u00e1t vy\u0161\u0161\u00ed ne\u017e ve vod\u00e1ch bez tule\u0148\u016f.<\/p>\n\n

D\u016fsledky pro mo\u0159sk\u00e9 ekosyst\u00e9my a lidsk\u00e9 zdrav\u00ed<\/h3>\n\n

Zji\u0161t\u011bn\u00ed studie zd\u016fraz\u0148uj\u00ed v\u00fdznamn\u00fd vliv l\u00edn\u00e1n\u00ed slon\u016f mo\u0159sk\u00fdch na cyklus rtuti v mo\u0159sk\u00fdch ekosyst\u00e9mech. Jako vrcholov\u00ed pred\u00e1to\u0159i hromad\u00ed tuleni vysok\u00e9 hladiny rtuti, co\u017e m\u016f\u017ee m\u00edt \u0161kodliv\u00e9 \u00fa\u010dinky na jejich zdrav\u00ed a reproduk\u010dn\u00ed \u00fasp\u011bch. Nav\u00edc uvol\u0148ov\u00e1n\u00ed rtuti b\u011bhem l\u00edn\u00e1n\u00ed p\u0159edstavuje potenci\u00e1ln\u00ed riziko pro jin\u00fd mo\u0159sk\u00fd \u017eivot a nakonec i pro lidi, kte\u0159\u00ed konzumuj\u00ed mo\u0159sk\u00e9 plody.<\/p>\n\n

Strategie zm\u00edr\u0148ov\u00e1n\u00ed a budouc\u00ed v\u00fdzkum<\/h3>\n\n

Pochopen\u00ed role slon\u016f mo\u0159sk\u00fdch p\u0159i zne\u010di\u0161t\u011bn\u00ed rtut\u00ed je z\u00e1sadn\u00ed pro v\u00fdvoj \u00fa\u010dinn\u00fdch strategi\u00ed zm\u00edr\u0148ov\u00e1n\u00ed. V\u00fdzkumn\u00edci zkoumaj\u00ed r\u016fzn\u00e9 p\u0159\u00edstupy, v\u010detn\u011b sni\u017eov\u00e1n\u00ed pr\u016fmyslov\u00fdch emis\u00ed rtuti, zlep\u0161ov\u00e1n\u00ed \u010di\u0161t\u011bn\u00ed odpadn\u00edch vod a zav\u00e1d\u011bn\u00ed dietn\u00edch omezen\u00ed pro lidi.<\/p>\n\n

Pr\u016fb\u011b\u017en\u00e9 monitorov\u00e1n\u00ed a spolupr\u00e1ce<\/h3>\n\n

Pr\u016fb\u011b\u017en\u00e9 monitorov\u00e1n\u00ed hladin rtuti v mo\u0159sk\u00fdch ekosyst\u00e9mech je nezbytn\u00e9 pro sledov\u00e1n\u00ed \u00fa\u010dinnosti zm\u00edr\u0148uj\u00edc\u00edch opat\u0159en\u00ed a posuzov\u00e1n\u00ed potenci\u00e1ln\u00edch rizik pro lidsk\u00e9 zdrav\u00ed. Spolupr\u00e1ce mezi v\u011bdci, tv\u016frci politik a zainteresovan\u00fdmi stranami je z\u00e1sadn\u00ed pro \u0159e\u0161en\u00ed probl\u00e9mu zne\u010di\u0161t\u011bn\u00ed rtut\u00ed a ochranu zdrav\u00ed na\u0161ich oce\u00e1n\u016f a mo\u0159sk\u00e9ho \u017eivota.<\/p>","protected":false},"excerpt":{"rendered":"

Sloni mo\u0159\u0161t\u00ed: P\u0159ekvapiv\u00fd zdroj zne\u010di\u0161t\u011bn\u00ed rtut\u00ed v pob\u0159e\u017en\u00edch vod\u00e1ch Kalifornie Rtu\u0165 v mo\u0159sk\u00e9m prost\u0159ed\u00ed Rtu\u0165, vysoce toxick\u00fd t\u011b\u017ek\u00fd kov, p\u0159edstavuje zna\u010dnou hrozbu pro mo\u0159sk\u00e9 ekosyst\u00e9my. Jej\u00ed nej\u0161kodliv\u011bj\u0161\u00ed forma, methylrtu\u0165, se…<\/p>\n","protected":false},"author":2,"featured_media":24494,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[23783,23785,23782,18600,1886,23784],"class_list":["post-18187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marine-biology","tag-biomagnification","tag-catastrophic-molt","tag-elephant-seals","tag-mercury-pollution","tag-marine-ecosystems","tag-sentinel-species"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/18187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=18187"}],"version-history":[{"count":2,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/18187\/revisions"}],"predecessor-version":[{"id":24495,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/18187\/revisions\/24495"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media\/24494"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=18187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=18187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=18187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}