“A68” is drifting towards the island — huge iceberg threatens penguin colonies

penguins
Foto: ima­go images/Westend61

An ice­berg more than twice the size of Mal­lor­ca is drift­ing towards the island of South Geor­gia in the Atlantic. Mil­lions of pen­guins and oth­er ani­mal species live there. The ice mass­es could endan­ger their sur­vival. A col­li­sion could also have fatal con­se­quences for marine life. The world’s largest ice­berg float­ing in the South Atlantic could pose a threat to pen­guins and oth­er ani­mal species. Sci­en­tists warned that the ice­berg named A68 could hit the island of South Geor­gia in 20 or 30 days. Pen­guins, seals and species of birds liv­ing there may then no longer be able to prop­er­ly sup­ply them­selves with food. Glob­al warm­ing has accel­er­at­ed the breakup of ice­bergs in Antarc­ti­ca. The cur­rent case could have a dev­as­tat­ing impact on the abun­dance of wildlife in the UK over­seas ter­ri­to­ry of South Geor­gia. The A68 broke away from the Larsen C ice shelf on the Antarc­tic Penin­su­la in July 2017. It weighs thou­sands of bil­lions of tons. Its area is more than twice that of Mal­lor­ca. At the speed at which he is cur­rent­ly drift­ing through the South Atlantic, he could reach the rather shal­low waters of the island in 20 to 30 days. Since it is 160 kilo­me­ters long and 48 kilo­me­ters wide, but only 200 meters deep, it could come dan­ger­ous­ly close to the coast. “The chance of a col­li­sion is 50 to 50,” said Andrew Flem­ing of the British Antarc­tic Survey.

Hun­dreds of thou­sands of king pen­guins live on the island of South Geor­gia along­side crest­ed pen­guins, chin­strap pen­guins and gen­too pen­guins. Seals and wan­der­ing alba­tross­es are also native to the island. Should the ice­berg set­tle near the island, the par­ents of birds could have prob­lems car­ing for their off­spring — which could seri­ous­ly endan­ger their sur­vival. The lives of baby seals could also be in dan­ger. “The num­bers of pen­guins and seals could drop dra­mat­i­cal­ly,” said Geraint Tar­ling of the British Antarc­tic Sur­vey. The ecosys­tem on the sea floor could also be dis­rupt­ed. Its recov­ery could take decades or even cen­turies. In addi­tion, the ice­berg has “stored nutri­ents and dust for hun­dreds of years, which are now being released and grad­u­al­ly fer­til­iz­ing the oceans,” added Geraint Tar­ling. The for­ma­tion of ice­bergs is a nat­ur­al process that is accel­er­at­ed by the warm­ing of the air and the oceans, the sci­en­tists empha­sized. The west of the Antarc­tic is there­fore one of the regions in the world that is warm­ing up par­tic­u­lar­ly quickly.

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