
Experţii UICN, un organism cu autoritate în domeniul biodiversităţii, au realizat cel mai aprofundat studiu biologic despre mamifere de până acum. Potrivit acestuia, aproximativ o treime din speciile de mamifere este ameninţată cu dispariţia, adică 1.141 de exemplare din totalul de 5.487 studiate. Realitatea ar putea fi însă şi mai gravă, deoarece nu există date despre 836 de specii, iar pentru cercetători lipsa informaţiilor reprezintă, de obicei, un semnal al dispariţiei acesteia.
76 de specii, rase de pe faţa Pământului în 500 de ani
Pe lângă cele aflate pe cale de dispariţie, jumătate din mamifere sunt în declin numeric, iar din anul 1.500 şi până în prezent se estimează că au dispărut de pe suprafaţa Pământului cel puţin 76 de specii. Declinul se datorează, în primul rând, vâ- nătorii intensive (mai ales braconajului) şi distrugerii habitatului în care animalele respective trăiesc şi se hrănesc. De asemenea, sunt şi cazuri în care o anumită afecţiune a decimat sute de exemplare. În total, pe lista UICN se află 188 de mamifere încadrate în “pericol critic” şi 450 catalogate a fi “în pericol”. Chiar dacă situaţia nu este deloc roz, specialiştii susţin că este posibilă totuşi o redresare a situaţiei, însă, cu cât se vor întârzia mai mult măsurile necesare, cu atât va fi mai greu să se înlăture pericolul de dispariţie a unor specii.
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