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Residents’ Perceptions of the Tourism Impacts on a Mature Destination: The Case of Madeira Island
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作者 Diogo Teixeira J.Cadima Ribeiro 《Journal of Tourism and Hospitality Management》 2019年第4期149-167,共19页
Residents play a fundamental role in the quality of tourists’experiences and satisfaction derived from a visit and,thus,in the success of a tourism destination.This paper addresses the perceptions that residents have... Residents play a fundamental role in the quality of tourists’experiences and satisfaction derived from a visit and,thus,in the success of a tourism destination.This paper addresses the perceptions that residents have the impacts of tourism on Madeira Island,a mature tourism destination.Based on data extracted from a survey administered to residents during August and September 2018,we inquired on the extent to which they maintain a positive perception of the impacts of the tourist industry.The survey tried to address the residents’perceptions of economic,cultural,social,or environmental impacts.In the analysis of the data,both descriptive and multivariable statistical methods were used.The empirical results attained indicate that residents feel that there is no excess of tourism on the island.They do not fail to realize that there are a few negative consequences,but the positive ones got better scores on average.Being an inhabitant of an urban or a rural site did not seem to influence differently the perceptions gathered on the contribution of tourism to the overall development of Madeira Island.This type of analysis can serve as a useful tool for tourism planners and managers in order to prevent or minimize eventual negative impacts of the tourism industry as felt by the local inhabitants and,thus,for creating the required policies. 展开更多
关键词 residents’perceptions tourism impacts madeira Island
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亚马逊流域玛代拉河Santo Antonio鱼道设计与建造的启示 被引量:5
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作者 张辉 KYNARD Boyd +2 位作者 JUNHO Ricardo 杜浩 危起伟 《水生态学杂志》 北大核心 2013年第4期95-100,共6页
Santo Antnio过鱼设施位于亚马逊河最大支流玛代拉河下游,其设计规模宏大,在世界范围内鲜有,并且工程建设地所在区域水文环境和鱼类生物学特征等与我国长江较为类似,通过分析该过鱼设施,得出启示主要包括:(1)过鱼设施是为生物对象设... Santo Antnio过鱼设施位于亚马逊河最大支流玛代拉河下游,其设计规模宏大,在世界范围内鲜有,并且工程建设地所在区域水文环境和鱼类生物学特征等与我国长江较为类似,通过分析该过鱼设施,得出启示主要包括:(1)过鱼设施是为生物对象设计的水利工程,其设计和建设过程中必须由工程师和生物学家紧密合作;(2)吸引水流对过鱼设施的成败起关键性作用,虽然吸引水流系统需要较大投资并且运行过程中会损失大量的水能,但从确保过鱼设施效果而言是非常必要的;(3)物理模型对于鱼道进口位置、鱼道内部水力学特征的确定等具有重要参考价值,尤其是在1∶1局部模型内开展的生物学试验是细化和优化鱼道内部结构细节的有效方法;(4)卵石框(石笼)隔板的水池分隔方法兼具水池式鱼道与仿自然通道的双重特性,并且完工后还可根据鱼道的运行情况灵活调整,非常方便;(5)进口处采用较高的人字闸门,既可适应尾水变化,又可与吸引水流系统相配合,创造出有效的吸引水流,一举多得;(6)全部采用大功率灯泡式水轮机是保护下行鱼类的有效措施;(7)监测系统和公众教育等配套设施的建设非常必要,有利于改进鱼道运行方式和提高过鱼效率。 展开更多
关键词 Santo Antonio鱼道 玛代拉河 启示
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Sex steroids of black scabbardfish,Aphanopus carbo,in relation to reproductive and migratory dynamics
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作者 Inês Farias Elsa Couto +3 位作者 Neide Lagarto Joāo Delgado Adelino V.M.Canário Ivone Figueiredo 《Aquaculture and Fisheries》 2021年第1期42-50,共9页
Black scabbardfish,Aphanopus carbo,is a commercially important species that takes distant migrations throughout its life cycle.Sex steroids were measured by radioimmunoassay in the blood plasma of specimens caught off... Black scabbardfish,Aphanopus carbo,is a commercially important species that takes distant migrations throughout its life cycle.Sex steroids were measured by radioimmunoassay in the blood plasma of specimens caught off the Madeira Archipelago and mainland Portugal to link this species migratory path with its reproductive cycle.Furthermore,a pilot study using Mozambique tilapia(Oreochromis mossambicus)was designed to evaluate the effect of sample freshness on steroid levels because black scabbardfish blood was collected at separate times after specimens were caught.The changes in T and 11-KT concentrations between the time of blood extraction and the time after preservation did not statistically differ among the different methods applied.Therefore,measured black scabbardfish steroid concentrations were directly used in the subsequent data analyses.In females,E2 and in T concentrations peaked at a late stage of vitellogenesis.E2 concentration was significantly different between females caught off each area.Clustering E2 and T concentrations from all developing females resulted in the separation of two distinct groups,independently of their geographical area.In males,T and 11-KT were not significantly different between maturity stages.The hepatosomatic index of males caught off mainland Portugal was relatively high.This may reflect a mechanism for storing energy that will later be consumed during migration to the spawning grounds.The trend of sex steroids concentrations throughout the sexual maturation of the species is consistent with the morphological indicators and shows evidence of the reproductive and migratory pattern hypothesised for the black scabbardfish in NE Atlantic. 展开更多
关键词 Black scabbardfish DEEP-SEA madeira Mainland Portugal Migration Sex steroids
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