Sharks muGungwa Black: Chokwadi kana Nhema?

Vamwe vanhu, kunyanya pashure shamisa nemishumo rehove kurwiswa ari plesieroorde yeEgipita, vakabvunza mubvunzo: asi unonzwa wakachengeteka nokuda vanoshambira siyana muGungwa Dema? Kana akawanikwa kunyange Sharks muGungwa Dema, uye kana unogona kusangana navo pamusoro kumiganhu kuCaucasus uye Crimea?

Kuti zvakazara tipindure mubvunzo uyu uye kuvimbisa ose dambudziko, unongofanira kuva kuita karwendo, kunyange zvishoma, nhoroondo panowanikwa mvura nzvimbo, iyo yava kunzi Sea Black. mamiriyoni 10. Makore akapfuura paiva dziva rakakura, izvo masayendisiti anonzi gungwa Sarmatskys. Zvishoma nezvishoma Sea Sarmatian kuwedzera makomo yakakamurwa kuva nhamba madziva makuru, makungwa, kubviswa mvura mumakungwa; asi Aral, reCaspian uye Black. wokupedzisira uyu, nokuda kuwanda nzizi inoyerera mariri, yakanga desalinated. Nokufamba kwenguva, vose fauna of kuti anogara yekare Sea Black, gungwa rakava mvura yakachena. Asi mamiriyoni 8. Makore akapfuura maiva nokudengenyeka kwenyika kukuru mauto kuti akasika gungwa Marmara uye Bosporus uye Dardanelles uye zvinouraya kusvika ipapo vagere Sea Black. Misa mvura munyu zvikazara kubva Mediterranean kusvikira kuGungwa Black. Kuchinja dzaiva nokukurumidza zvokuti Freshwater zvomumvura vagari Sea Black haana nguva kujairana kwavari. A kuwanda zvitunha yakanyura pasi, uye muitiro manyowa kweGungwa Dema akaita aakatipa, kwete zvakafanana nemamwe gungwa: yakatanga hydrosulfide layer riri mamita 150 pasi mvura pamusoro.

Izvi rehydrogen sulfide rukoko anoita isingagariki huru huru kweGungwa Dema. Below 150 M anogona kuvapo kunze kuti sulfuric anaerobic utachiona kuti ayo upenyu basa chete kuwedzera chikamu rehydrogen sulfide. ezvinhu ichi - nhete rukoko kuti mupfumi nehove, chaizvo it upenyu guru uye ngozi zvikara zvakadaro, kufanana Sharks muGungwa Dema. Asi rehydrogen sulfide - kwete chete chinhu inoperera nzira Sharks. A vazhinji nzizi uye yakamanikana Bosporus chaizvo desalinate mvura yegungwa. Zvakakwana kutaura kuti salinity kweGungwa Dema iri hafu kuti reMediterranean. Kunze, pemvura yaro muchando mvura inogona dzaserera kuti + 9 P kuti inowanikwa inotonhorera, asi kwete kutonhora Mvura Atlantic Sharks vari kusagadzikana chaizvo. Kukodzera kuti Sharks uye shoma zvokudya mujinga Sea Black: zvikara huru vanosarudza guru uye Stein nezvavakatapa kuti anogara dzakadzikira mvura, ukuwo kweGungwa Dema akapfuma hove duku: bakayawu, sprat, rehove pamunhu, izvo kurarama penyika akaturikidzana emvura.

Kana taifunga kuti chero rehove uye zaplyvet chirimo kubva muMediterranean kweGungwa Dema, hazvingaiti kuti zvichaita kutiza Bosphorus nokuda unsuitability remvura kushomeka kwezvokudya. Asi Sharks muGungwa Dema ndiye, uye kunyange zvakawanda sezvo vaviri marudzi. Asi regai kutya! Izvi spiny dogfish rehove, aizivikanwawo imbwa rehove nokuda kufanana tomu, uye katsi Sharks. Izvi marudzi maviri inosimbisa, uyewo kweGungwa Dema Dolphins, hove duku, kufamba namapoka maduku. Havadyi vanhu, kunyange zvazvo miromo yavo zvakare, kufanana Dolphins, vazere kwemeno. Asi vanhu vanoda kudya zviduku Sharks izvi: steaks katrana vaitirei delicacy guru Crimea, uye kubva Sturgeon katrana aikoshesa zvakafanana sezvo Sturgeon Sturgeon sezvo hove uyu anenge asina mapfupa, uye nyama yayo ane rakaisvonaka kuravira.

Zvisinei, vanoramba zvakajeka rehove ngozi muGungwa Dema achiri kufanira: mu katrana pamusoro zenze ane rakapinza nechiredzo, izvo zvinokonzera marwadzo uye zvinogona kukonzera kuzvimba maronda. Kunyange hazvina yaingowanikwa katranov uye katsi Sharks dzimwe nguva dzishambire mumvura isina kudzika, uye vanogona chete kuuya. Kana zvakadaro hove vanogona kutya ichiyangarara uye meno. Asi iyi hwakanyorwa kamwe chete dzose makore zvakawanika (mu 1970 iri pamahombekombe Yevpatoria). The mhuka dzakawanda ngozi vanhu muGungwa Black - haisi shark uye stingrays, stingray. misana yavo vakapakata yakatesvera panyanga dzacho hadzisi nyore, uye muchetura. Chikamu jekiseni Uturu hakusi kuparadza vanhu, asi vanogona zvakakomba akapamba pazororo rake, sezvo mutezo unozvimba kubva nokuruma. Pane zviitiko kufa (kunyange asiri muGungwa Dema) kubva anorova Spike iri rinokosha nhengo. Asi, vakawanda, muGungwa Dema anonzi ari zvikuru vachienzaniswa nevamwe.