California Code, Fish and Game Code - FGC § 307

(a) Whenever after due investigation the commission finds that game fish, resident or migratory birds, game or fur-bearing mammals, amphibians, or reptiles have decreased in numbers in an area, district, or portion of an area or district to the extent that a scarcity exists, the commission may reduce the daily bag limit and the possession limit on those game fish, birds, mammals, amphibians, or reptiles that are in danger of depletion, for a period of time that the commission may specify, or until new legislation addressing the scarcity becomes effective.

(b) A regulation adopted pursuant to this section shall be filed with the Secretary of State, and that filing shall be deemed a legal notice thereof.

(c) The regulation shall be published twice in at least one newspaper of general circulation in every county affected by the order.  The publications shall be separated by a period of not less than one week and not more than two weeks.  The regulation shall be posted in such public places in each county as the director may direct.