有帮助
发表于 2025-3-23 13:14:25
https://doi.org/10.1007/978-3-319-54567-7 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.
foreign
发表于 2025-3-23 15:56:29
Adriana E. Kajon,Ramón A. Gonzalezopulation. There are also 15 smaller groups scattered in other parts of the country. The growth in numbers and geographic spread of beavers in Austria have produced some conflict between beavers and humans. Scientifically sound management is necessary to ensure the conservation of beavers in Austria.
Obsessed
发表于 2025-3-23 18:48:20
Beaver Management and Utilization in Scandinavia,slow in Finland. Hunting regulations differ substantially between the three countries. Sweden has the least elaborate system (for example, no bag limit), and Norway the most sophisticated. It is obvious that there are other factors affecting hunting intensity since the annual beaver harvest is only
食料
发表于 2025-3-24 00:41:26
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Infusion
发表于 2025-3-24 05:44:09
The Beaver in Russia and Adjoining Countries,ot distributed evenly throughout the countries. For example, more than 75% of all Russian beavers are concentrated in 14 taiga regions from Karelia to the Ural Mountains. The decrease in beaver numbers observed immediately after perestroika has stopped in the last few years, and since 1996 there has
Perennial长期的
发表于 2025-3-24 09:40:58
Origin, Present Conditions, and Future Prospects of the Slovakian Beaver Population,sion of the beaver in Slovakia include human developments. For example, on the Danube River, downstream from Bratislava, the new Gabcikovo Dam limits the ability of beavers to disperse in this direction. We suggest a bypass be constructed near Cunovo to facilitate beaver movement.
capsule
发表于 2025-3-24 12:50:06
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废止
发表于 2025-3-24 16:52:25
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无所不知
发表于 2025-3-24 20:41:16
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lobster
发表于 2025-3-24 23:16:39
Beaver: A New Prey of Wolves in Latvia?,er (48.5 F% and 31.4 B%) than it was in winter due to a more variable food content. Based on biomass beaver was the most important food item in summer (30.3 F% and 36.1 B%), followed by cervids, and wild boar (18.2 F% and 30.1 B%). Other food items (small mammals, birds, berries etc.) were of little