Visão

Siga-nos nas redes

Perfil

Invasão de algas deixa mares da China completamente verdes

Mundo

  • 333

O Mar Amarelo, situado na cidade de Qingdao, ficou completamente coberto com algas, numa área superior a 28 mil quilómetros. VEJA AS FOTOS

2012 World Press Photo of the year by Samuel Aranda, Spain, for The New York Times
1 / 21

2012 World Press Photo of the year by Samuel Aranda, Spain, for The New York Times

2nd prize Arts and Entertainment Singles category by Vincent Boisot, France, Riva Press for Le Figaro Magazine
2 / 21

2nd prize Arts and Entertainment Singles category by Vincent Boisot, France, Riva Press for Le Figaro Magazine

1st prize Arts and Entertainment Stories category by Rob Hornstra, The Netherlands shows the Sochi Project
3 / 21

1st prize Arts and Entertainment Stories category by Rob Hornstra, The Netherlands shows the Sochi Project

1st prize Contemporary Issues Singles category by Brent Stirton, South Africa, Reportage by Getty Images for Kiev Independent
4 / 21

1st prize Contemporary Issues Singles category by Brent Stirton, South Africa, Reportage by Getty Images for Kiev Independent

1st prize Daily Life Singles category by Damir Sagolj, Bosnia and Herzegovina, Reuters
5 / 21

1st prize Daily Life Singles category by Damir Sagolj, Bosnia and Herzegovina, Reuters

1st prize Daily Life Stories by Alejandro Kirchuk, Argentina "Never Let You Go"
6 / 21

1st prize Daily Life Stories by Alejandro Kirchuk, Argentina "Never Let You Go"

1st prize Nature Singles category by Jenny E. Ross, USA. Novaya Zemlya
7 / 21

1st prize Nature Singles category by Jenny E. Ross, USA. Novaya Zemlya

1st prize Nature Stories category by Brent Stirton, South Africa, Reportage by Getty Images for National Geographic
8 / 21

1st prize Nature Stories category by Brent Stirton, South Africa, Reportage by Getty Images for National Geographic

1st prize General News Singles category by Alex Majoli, Italy, Magnum Photos for Newsweek
9 / 21

1st prize General News Singles category by Alex Majoli, Italy, Magnum Photos for Newsweek

2nd prize People in the News Singles category by Tomasz Lazar, Poland shows the arrest of protesters in Harlem, New York City
10 / 21

2nd prize People in the News Singles category by Tomasz Lazar, Poland shows the arrest of protesters in Harlem, New York City

2nd prize General News Stories category by Paolo Pellegrin, Italy, Magnum Photos for Zeit Magazin
11 / 21

2nd prize General News Stories category by Paolo Pellegrin, Italy, Magnum Photos for Zeit Magazin

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
12 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
13 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
14 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
15 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
16 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
17 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
18 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
19 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
20 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse
21 / 21

1st prize People in the News Stories category by Yasuyoshi Chiba, Japan, Agence France-Presse

Segundo a Administração Oceânica da China, as algas surgiram na semana passada e hoje estão já espalhadas por uma área de 28 900 quilómetros. Esta invasão de algas, que ocorreu há seis anos durante o verão, tinha registado a maior cobertura em 2008, atingindo os 13 mil quilómetros.

Brenda Parker, investigadora da Universidade de Cambridge, Reino Unido, acredita que esta invasão pode estar relacionada com a poluição industrial: "Os booms de algas costumam ocorrer após descargas maciças de fosfatos e nitratos na água. Pode ser da agricultura, de esgotos que não são tratados ou de alguma indústria que descarregue resíduos na água", explica.

Parker admite que o fenómeno pode ser um indicador de desequilíbrio no ecossistema, e Bao Xianwen, professor, justifica a questão ao referir que o desequilíbrio dos ecossistemas marinhos ocorre devido ao consumo de grandes quantidades de oxigénio.

O processo de remoção das algas já teve início e já foram retiradas do mar cerca de 7.335 toneladas de algas.