贪求
发表于 2025-3-21 16:41:54
书目名称In the Search of the Lost Pearl影响因子(影响力)<br> http://figure.impactfactor.cn/if/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl影响因子(影响力)学科排名<br> http://figure.impactfactor.cn/ifr/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl网络公开度<br> http://figure.impactfactor.cn/at/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl网络公开度学科排名<br> http://figure.impactfactor.cn/atr/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl被引频次<br> http://figure.impactfactor.cn/tc/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl被引频次学科排名<br> http://figure.impactfactor.cn/tcr/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl年度引用<br> http://figure.impactfactor.cn/ii/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl年度引用学科排名<br> http://figure.impactfactor.cn/iir/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl读者反馈<br> http://figure.impactfactor.cn/5y/?ISSN=BK0463111<br><br> <br><br>书目名称In the Search of the Lost Pearl读者反馈学科排名<br> http://figure.impactfactor.cn/5yr/?ISSN=BK0463111<br><br> <br><br>
过多
发表于 2025-3-21 21:11:57
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AER
发表于 2025-3-22 03:05:38
Negative Factors Influencing the Populations of , in Europections, pollution, lack of host fishes, changes of the habitats in rivers and on surrounding lands, alien species, river canalization, increased numbers of beavers, direct extermination by humans and global warming.
troponins
发表于 2025-3-22 07:10:25
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狂热文化
发表于 2025-3-22 09:52:09
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hypnotic
发表于 2025-3-22 13:24:43
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defenses
发表于 2025-3-22 18:28:49
Distribution and Numbers of , and its Extinct Populations in the Study Areascs concentrating in two small sections of the two rivers. It was shown that the borderline of the species distribution had shifted northwards, and about 20 populations had become extinct. It is highly unlikely that any other pearl mussels populations would be discovered in the study area.
HUSH
发表于 2025-3-22 23:15:32
Recent Tendencies Characterizing the Populations of , and the Results of Activities on their Conservy several negative impacts such as the extermination of host fishes, pollution, beaver dams, and, finally, direct extermination of the habitats and the molluscs during the construction of new electric power line. The number of pearl mussels reduced from 40,000 to 25,000, and further decline is expec
克制
发表于 2025-3-23 05:24:25
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行业
发表于 2025-3-23 06:11:56
Conservation Measures for , Populations forests along the river banks, removal of the sources of pollution, improvement of the system of protected areas, the release of parrs of host fish into pearl mussel habitats, etc. However, the numbers of pearl mussels are so low that only a significant increase can save this species. This means th