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ID:41297677
大小:1.29 MB
页数:10页
时间:2019-08-21
《WalrusExploitationintheNorthPacific:在北太平洋海象的开发》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、HistoricalEcologyofWalrusintheBeringSeaEricaHillUniversityofAlaskaSoutheastHistoricalEcology=frameworkusedtostudyhuman-ecosysteminteractionsthroughtimeAssumesthathumansmodifiedancientlandscapesandwaterscapes,affecting:•biodiversity•abundance,distribution,andsizeofeconomica
2、llyimportantspecies“pristine”land-andwaterscapesdon’texistHowhavehumansintheBeringSearegioninteractedwithwalrusoverthepast3000years?Whydoesthispatternexist?HumansidentifiedmigratorypathsofseamammalsandsettledatsiteswherewalruspassedThisexplainswhySt.LawrenceIslandandtheco
3、astofChukotkaweremuchmoreintensivelyoccupiedthanmuchoftheNWcoastofAlaskaResearchhasgeneratednewquestions•Didhumansoverexploitwalrusbytakingprimarilyfemaleswithcalves?•Ifso,diddeclineinwalrusemergenceofwhaling?Nextstepinresearch:+
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