Whenever such scientific authority determines that the export of specimens of any such species should be limited in order to maintain that species throughout its range at a level consistent with its role in the ecosystem in which it occurs , and well above the level at which that species might become eligible for inclusion in Annex A in accordance with Article 3 ( 1 ) ( a ) or ( b ) ( i ) , the scientific authority shall advise the competent management authority , in writing , of suitable measures to be taken to limit the issuance of export permits for specimens of that species.(b )