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排序方式: 共有142条查询结果,搜索用时 484 毫秒
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The Science of Nature - 相似文献
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F. Kiebitz G. Masing R. Grammel M. Herzberger Felix Jentzsch 《Die Naturwissenschaften》1928,16(8):132-136
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Charlie Huveneers Paul J. Rogers Crystal Beckmann Jayson M. Semmens Barry D. Bruce Laurent Seuront 《Marine Biology》2013,160(11):2863-2875
Wildlife tourism has become increasingly popular and is one of the fastest growing sectors of the tourism industry. A radio-acoustic positioning system was deployed to monitor the fine-scale movements of 21 white sharks (Carcharodon carcharias) and investigate the effects of shark cage-diving activities on their swimming behaviour and space use. This study contributes towards improving our understanding of the complex relationship between wildlife tourism and its effects on sharks, and assesses how tourism targeting sharks affects behaviour at a finer spatial scale than previously investigated. Our study demonstrated that shark cage-diving operators (SCDO) influenced the fine-scale three-dimensional spatial distribution and the rate of movement of white sharks at the Neptune Islands. White sharks stayed more than 30 m away from the SCDO on 21 % of the days detected, but spent a significant amount of time in close proximity to the SCDO on the remaining days. Individual variation was detected, with some sharks behaviourally responding to SCDO more than others. The degree of variation between individual sharks and the different levels of interaction (e.g. presence, proximity to SCDO, and consumption of tethered bait) highlights the complexity of the relationships between SCDO and the effects on sharks. To improve our understanding of these relationships, future monitoring of shark cage-diving operations requires proximity to SCDO to be recorded in addition to the presence within the area. Further work is needed to assess whether the observed behavioural changes would affect individual fitness and ultimately population viability, which are critical information to unambiguously assess the potential impacts of wildlife tourism targeting sharks. 相似文献
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International retirement migration in the Alicante region,Spain: process,spatial pattern and environmental impacts 总被引:1,自引:0,他引:1
Ingo Zasada Susana Alves Felix Claus Müller Annette Piorr Regine Berges Simon Bell 《Journal of Environmental Planning and Management》2010,53(1):125-141
International retirement migration has become an increasing phenomenon in the Mediterranean region of Alicante, Spain. Through an interdisciplinary approach, relationships between the migration process, landscape change and environmental impacts are examined. Lifestyle-related perceptions and demands of UK retirees are studied as a major driving force of urbanisation. The extent and quality of the process is assessed by statistical and land use data analysis. Results reveal a distinctive spatial pattern of in-migration and the emergence of an archetypical landscape, consisting of a mosaic of remaining natural and urbanised landscape along the Mediterranean coast. The paper discusses the necessity of retirees' integration into sustainable planning and decision making. 相似文献
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Victor Felix Swamidoss Kugarajah Vaidhegi Bangaru Mohan Ranjan Shivendu Dharmalingam Sangeetha 《Environmental science and pollution research international》2021,28(28):37520-37533
Environmental Science and Pollution Research - Polyvinylidene fluoride (PVDF) blended with varying concentrations of titanium nanotubes (TNT) was electrospun to result in a nanocomposite filter... 相似文献
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