Col­li­sion course

Down to Earth - - SCIENCE -

anal­y­sis of blue whale move­ment along the west coast of the US has found that their feed­ing ar­eas are in­ter­sected by ship­ping routes, se­verely threat­en­ing the species with in­jury and mor­tal­ity. Between 1993 and 2008, 171 whales were tagged with trans­mit­ters at dif­fer­ent times and tracked through satel­lite. The study found that shift­ing sea routes slightly away from Los An­ge­les and San Fran­cisco ship­ping lanes could sig­nif­i­cantly re­duce the threat. One-fourth of the world's blue whale pop­u­la­tion is found in the east­ern Pacific. PLoS ONE, July 23

Newspapers in English

Newspapers from India

© PressReader. All rights reserved.