ã±ã³ããªãã¸å¤§å¦åèªææã® Robert Rowthorn å士ã«ããã¨ã人ã ãå®æã«å¾åãããéºä¼çè¦ç´ ãå®ææåçãªæ £ç¿ã«ãããããã¤ã¯ããããã¨ã§ãä¸ã®ä¸ã«åºã¾ã£ã¦ããããã (PhysOrg ã®è¨äºãæ¬å®¶ /. è¨äºãdoi: 10.1098/rspb.2010.2504ãã) ã å®æãä¿¡ãã¦ãã人ã ã¯ããã§ãªã人ã ã¨æ¯è¼ãã¦é«ãåºç£çãèªããããã¨ãããã¢ã¼ããã·ã¥ãä¾ã«ã¿ãã¨ã1991 å¹´ã« 123,000 人ã ã£ããã®äººå£ã¯ 2010 å¹´ã« 249,000 人ã¨ã»ã¼ 2 åã«éãã¦ãããã¢ã¼ããã·ã¥ã®å®¶åºã§ã¯ååé¿å¦ãããªããããä¸äººã®å¥³æ§ãå¹³åãã¦ç£ãåä¾ã®æ°ã¯ 6 人ã§ããã¨ã®ãã¨ããã®ã¾ã¾ã®å¢ãã§ããã°ã2100 å¹´ã«ã¯ã¢ã¼ããã·ã¥äººå£ã¯ 700 ä¸äººã«éããã¨äºæ¸¬ãããããã ã å士ã«ããã¨åºç£çã¯æåã«å·¦å³ããããã人ã ãå®æã«å¾åããå¾åã¯éºä¼çè¦ç´ ã®çµã¿åãã
{{#tags}}- {{label}}
{{/tags}}