Tropical murjani tsibirin - samuwar da yanayin kasa

A cikin talakawa sani na tsibirin - shi ne wani yanki na ƙasar, kewaye da ruwa a kan dukkan bangarorin. Wannan kalma tana nufin a matsayin babbar yankunan ƙasar, misali, Iceland, da kuma cikin kankanin scraps sararin wani wuri a kan kogi, wanda zai iya gaba daya bace a cikin ruwan tufana. By ta asalin tsibiran iya zama babban yankin (halitta da motsi na tectonic faranti), volcanic (tasowa saboda shigowa na volcanoes) namytye (da m filaye wanda aka kafa daga amarya), wucin gadi da kuma karshe asirce mafi murjani tsibirin. Idan na farko hudu kungiyoyin, a fili yake cewa su sun sakamakon na halitta tectonic matakai ko mutum aiki, abin da ake da hannu a cikin samuwar murjani tsibirin, saboda mun san cewa murjani - mai rai gabar?

A dumi ruwan wurare masu zafi da tekuna zauna wadannan m m halittun da cewa ciyar a kan plankton, kama su tentacles. Kowane irin dabba gina wa kansa kofin farar ƙasa. Polyp ƙarshe mutuwa da kofin da ya rage. A kan tushen da sabon polyp gina kanta farar ƙasa zamansu. Kuma murjani mazauna girma, sunã gaggãwa ga plankton har zuwa rana har sai sun kai cikin teku matakin ba zai tashi sama da surface. Wannan Forms murjani tsibirin.

Yana da na halitta ya ɗauka cewa wannan - da low tsibiran, a matsayin murjani - marine dabbobi, kuma suna mutuwa a ƙasa. A mafi kyau duka zurfin domin su - game 30-10 mita, inda aka ba ji hadari da a lokaci guda isasshen hasken rana. To, don me, a hakikanin rai, wani murjani tsibirin iya isa wani tsawo na dama da ɗari mita? Haka ne, domin da tectonic faranti aka kullum motsi duniya. Hawa da sauka a cikin matakin da seabed iya ta da wani murjani Reef up ko sa shi a cikin mulkin madawwami duhu, a 200-300 mita. A fili yake cewa a kan lokaci da daukaka tsibirin da ake rufe da ƙasa da kuma ciyayi, amma har yanzu kafa shi za a hada da m farar ƙasa skeletons na dogon-matattu polyps.

Coral Island iya zama na iri biyu: ainihin tsibirin, da ciwon saba mana irin tadawa saman teku matakin a cikin nau'i na rawa, da kuma Atoll. Mene ne atolls da kuma yadda ake kafa? Pretty sauki, ko na dogon lokaci. Atolls ne sosai a cikin Pacific Ocean, inda, kamar yadda ka sani, shi ne mai karfi volcanic aiki. Tunanin wani tsibirin, wanda aka dagagge sama ruwa aman wuta bakin dutse. A karkashi, a cikin ruwa, ba kawai mai tsanani da rana, amma kuma ruwan magma cikin zurfafa, son shirya polyps. Sun gina reefs a kusa da tsibirin, belting shi kamar zobe. Sa'an nan, bayan da wani karni na murjani aiki, volcanic shigowa auku da kuma ... fashe dutsen vuya a cikin ruwa mai zurfi. Amma murjãni ne! Tare da jirgin sama Atoll bayyana kewaye da wani blue teku zobe, a cikin abin da yake kore tafasan - duk wanda ya ragu na da zarar karaya aman wuta.

Hakika, ko da yaushe ba da aman wuta shanku a cikin teku, da kuma mafi m volcanic da murjani tsibirin. Misalin wannan da muka gani a Tonga jihar Bio-magmatic symbiosis (Polynesia), wanda shi ne wani tari na volcanic tsibirin kewaye da murjani reefs, kuma atolls. A gargajiya misali na Atoll da ciwon kusan idelno zobe siffar ne bikini.

Coral Island - wani hadadden yanayin kasa. Yana za a iya ce cewa reefs ne mafi yawan dukkan marine habitats. Ba saukad da ke ƙasa 20 digiri ruwa zazzabi, wani tsari da za a iya samu a cikin murjani farfajiyoyi, kogwanni da bushes, yawan abinci jawo hankalin wani m iri-iri na dabba. Polyps cinye plankton, kuma sũ, a bi da bi, gnaw m aku kifi, malam kifi, kazalika da voracious tarwada "kambi na ƙaya". A tududa Reef shirya teku urchins , da kuma teku anemones. The yawan murjani gidãjen Aljanna tsari amfipriony kadan sani a gare mu ta hanyar da zane mai ban dariya "Nemo kifi", da kuma a cikin kogwanni da matattu murjãni jira su ganima eels. Abin baƙin ciki, saboda da m adam aiki murjani ne samun karami, saboda polyps rayuwa ne kawai a sosai ruwa mai tsabta. Ko da taba da murjani iya kai ga mutuwarsa. Saboda haka, kamar yadda a cikin wurare masu zafi kasashen, ba a taka a polyps, har ma fiye kada ka karya m murjani rassan.