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Circling the Blood in the Water: The Difficulties in Endangered Species Protections for the Great White Shark
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作者 Derek Julio 《Natural Resources》 2014年第11期666-680,共15页
The purpose of legislation like the Endangered Species Act is to provide a means to conserve the ecosystems of endangered and threatened species, but not all species that may appear to need conservation are granted pr... The purpose of legislation like the Endangered Species Act is to provide a means to conserve the ecosystems of endangered and threatened species, but not all species that may appear to need conservation are granted protection. An estimated 100 million sharks are killed each year largely due to exploitation, yet few shark species are ever granted protection under state or federal endangered species acts. The Northeastern Pacific population of the Great White Shark is no exception. Despite the numerous threats facing the white shark, NOAA denied a petition to list it as an endangered or threatened species under the federal Endangered Species Act. In light of the pending California decision to list the white shark under its state endangered species act, this paper considers whether or not such extreme protections are necessary. This paper first discusses the threats facing the white shark, the listing processes of both the federal and the California endangered species acts, and NOAA’s 12-month negative finding. Finally, this paper concludes that endangered species protections are not warranted in the case of the Northeastern Pacific white shark because of prior government intervention and conservation efforts already in place. 展开更多
关键词 ENDANGERED SPECIES ACT ESA CESA California ENDANGERED SPECIES ACT great white shark
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新型大白鲨针布的应用实践 被引量:5
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作者 胡建凡 《辽东学院学报(自然科学版)》 CAS 2013年第1期16-18,共3页
研究了新型大白鲨锡林针布对生条质量的影响问题。用aQura对新型大白鲨针布所加工的生条进行了检测,结果显示新型大白鲨针布所加工的生条与普通针布所加工的生条相比,棉结去除率高2.28%,平均纤维有效长度高0.57 mm,短绒率下降2.5%,大白... 研究了新型大白鲨锡林针布对生条质量的影响问题。用aQura对新型大白鲨针布所加工的生条进行了检测,结果显示新型大白鲨针布所加工的生条与普通针布所加工的生条相比,棉结去除率高2.28%,平均纤维有效长度高0.57 mm,短绒率下降2.5%,大白鲨锡林针布有利于生条质量的改善,原因在于其良好的光洁度、耐磨度和锋利度。 展开更多
关键词 梳棉机 大白鲨针布 AQURA 棉结去除率 有效长度 短绒率
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大白鲨针布与格拉夫针布的比较研究 被引量:6
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作者 魏超 秦呈彬 李霞 《辽东学院学报(自然科学版)》 CAS 2013年第1期19-21,共3页
对国产大白鲨针布与格拉夫针布进行了对比试验,用常规检验方法对大白鲨针布和格拉夫针布所加工的生条和成纱质量进行了检验,结果显示,总体上大白鲨针布所加工的生条和成纱质量与格拉夫针布相差不大,大白鲨针布的性价比要好于格拉夫针布。
关键词 梳棉机 大白鲨针布 格拉夫针布
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