Avtor BR; foto: adobestock 11:28 dop OKOLJE

Pri odkritju življenja pod morskim dnom sodelovala Slovenca

V reviji Nature Communications objavili odkritje ekosistema pod morskim dnom na vzhodnem Pacifiškem grebenu

Pri raziskavi in odkritju sta sodelovala tudi raziskovalka dr. Tinkara Tinta in strokovni sodelavec Tihomir Makovec iz Morske biološke postaje Piran, Nacionalnega inštituta za Biologijo.

Raziskovalci so v reviji Nature Communications objavili poročilo o odkritju živalskega življenja pod morskim dnom na hidrotermalnih vrelcih vzhodnega Pacifiškega grebena.

Vzhodni Pacifiški greben je vulkansko aktivno območje na stiku dveh tektonskih plošč na dnu Tihega oceana, ki vsebuje številne hidrotermalne vrelce – odprtine na morskem dnu, ki nastanejo, kjer se morska voda in magma pod zemeljsko skorjo srečata.

Doslej so se raziskave osredotočale na organizme, ki živijo na morskem dnu okoli teh vrelcev, vključno s cevastimi črvi in školjkami, medtem ko možnost obstoja živalskega življenja pod površjem morskega dna ni bila temeljito raziskana.

Pri potopih in raziskavah pomagalo robotizirano vozilo

Glavni raziskovalki in prvi avtorici članka z naslovom: “Živalsko življenje v plitvi podmorski skorji pri globokomorskih hidrotermalnih vrelcih”, prof. dr. Monika Bright in prof. dr. Sabine Gollner sta z mednarodno odpravo kolegov raziskovalcev na raziskovalni ladji Schmidt Ocean Institute Falkor opravili serijo potopov do lokacije hidrotermalnega vrelca na globini 2.515 metrov na vzhodnem Pacifiškem grebenu.

Pri raziskovanju morskega dna so uporabljali posebej prirejeno in daljinsko vodeno robotizirano vozilo SuBastian. Pri razkrivanju delov morske skorje z velikim dletom, nameščenim na robotske roke omenjenega vozila, so odkrili tople, s tekočino napolnjene votline, naseljene z različnimi vrstami, ki so bile prej najdene samo na morskem dnu. Odkrili so velike cevaste črve in premične živali, kot so črvi in polži.

Obseg živalskih habitatov v podmorski skorji še neznan

Avtorji ugotavljajo, da so se ličinke iz skupnosti na morskem dnu lahko naselile v teh podmorskih habitatih zato, ker so ekosistemi na morskem dnu in pod njim kompleksno povezani. Odkritje ranljivih in bogatih živalskih habitatov v podmorski skorji, katerih obseg je trenutno neznan, po mnenju avtorjev povečuje nujnost zaščite morskega dna pred potencialnimi prihodnjimi okoljskimi spremembami.

Vir: NIB

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