恶化
发表于 2025-3-21 16:49:23
书目名称Beaver Protection, Management, and Utilization in Europe and North America影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0181966<br><br> <br><br>书目名称Beaver Protection, Management, and Utilization in Europe and North America读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0181966<br><br> <br><br>
大火
发表于 2025-3-21 22:11:45
Reintroduction of the Beaver, ,, in the Netherlands, ability of pairs to reproduce, and could influence the territory size. The Biesbosch region is also contaminated by heavy metals, such as cadmium, and this may also influence beaver reproduction in the future.
Endoscope
发表于 2025-3-22 00:57:52
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轻推
发表于 2025-3-22 08:27:57
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temperate
发表于 2025-3-22 10:01:01
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Affluence
发表于 2025-3-22 13:21:19
The Reintroduction of European Beaver, ,, in Poland,rograms has led to a large, viable beaver population in Poland. It is now necessary to implement an active management program for this species, a component of which would be an annual harvest of beavers. An annual harvest will reduce damage problems due to beaver activity, and help insure the continued health of the Polish beaver population.
synovial-joint
发表于 2025-3-22 20:58:02
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四目在模仿
发表于 2025-3-22 23:04:56
ver populations was the direct re sult of exploitation by humans. Now, at the end of the 20th century, protection, manage ment, and reintroduction programs, coupled with a decline in the demand for beaver fur and other products, have allowed beaver populations to increase dramatically. Since bea
Commonwealth
发表于 2025-3-23 01:42:36
Elsa G. Baumeister,Andrea V. Pontoriero There is also movement (immigration and emigration) of animals among the three countries and between the countries and Russia. The long-term role of beavers as a keystone species in aquatic habitats is considered critical in the region, and far outweighs any short-term economic damage they may cause.
不怕任性
发表于 2025-3-23 05:35:38
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