標(biāo)題: Titlebook: Beaver Protection, Management, and Utilization in Europe and North America; Peter E. Busher,Ryszard M. Dzi?cio?owski Book 1999 Springer Sc [打印本頁] 作者: 惡化 時(shí)間: 2025-3-21 16:49
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書目名稱Beaver Protection, Management, and Utilization in Europe and North America讀者反饋學(xué)科排名
作者: 大火 時(shí)間: 2025-3-21 22:11
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.作者: Endoscope 時(shí)間: 2025-3-22 00:57 作者: 輕推 時(shí)間: 2025-3-22 08:27 作者: temperate 時(shí)間: 2025-3-22 10:01 作者: Affluence 時(shí)間: 2025-3-22 13:21
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.作者: synovial-joint 時(shí)間: 2025-3-22 20:58 作者: 四目在模仿 時(shí)間: 2025-3-22 23:04
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- 作者: Commonwealth 時(shí)間: 2025-3-23 01:42
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.作者: 不怕任性 時(shí)間: 2025-3-23 05:35 作者: 有幫助 時(shí)間: 2025-3-23 13:14
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.作者: foreign 時(shí)間: 2025-3-23 15:56
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.作者: Obsessed 時(shí)間: 2025-3-23 18:48
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 作者: 食料 時(shí)間: 2025-3-24 00:41 作者: Infusion 時(shí)間: 2025-3-24 05:44
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作者: Perennial長(zhǎng)期的 時(shí)間: 2025-3-24 09:40
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.作者: capsule 時(shí)間: 2025-3-24 12:50 作者: 廢止 時(shí)間: 2025-3-24 16:52 作者: 無所不知 時(shí)間: 2025-3-24 20:41 作者: lobster 時(shí)間: 2025-3-24 23:16
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作者: Palliation 時(shí)間: 2025-3-25 05:03 作者: 微粒 時(shí)間: 2025-3-25 08:27
Foraging Behavior of Beavers ,, Plant Secondary Compounds, and Management Concerns, the three deciduous species or the three coniferous species. Beavers selected significantly more deciduous than coniferous species across all treatments except the bark-extract treatment. A regression indicated a stronger relationship in selection of leaf extracts was present for leaf lifespans tha作者: LITHE 時(shí)間: 2025-3-25 13:57
Long-Term Population Dynamics of The North American Beaver , on Quabbin Reservation, Massachusetts,ly 23% of its peak. Various changes in productivity, colony composition, dispersal and interactions with other wildlife species were associated with these periods of population change. The changes observed in the Quabbin Reservation beaver population are comparable to changes in an unexploited beave作者: 慷慨援助 時(shí)間: 2025-3-25 16:11 作者: 放氣 時(shí)間: 2025-3-25 22:27
Beaver Protection, Management, and Utilization in Europe and North America作者: 矛盾 時(shí)間: 2025-3-26 04:09 作者: Infant 時(shí)間: 2025-3-26 05:12
The Structure and Content of the Good,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 作者: 蚊子 時(shí)間: 2025-3-26 12:26
Law, Liberalism, and the Common Good,ter. The beaver population has increased from 1100 to 3000 individuals from 1983-97, and the respective number of lodges has increased from 400 to 1280. The beaver density is highest in the southeastern part of the study area, but the range is also expanding to the west. The occurrence of damage had作者: 現(xiàn)實(shí) 時(shí)間: 2025-3-26 15:16 作者: REIGN 時(shí)間: 2025-3-26 20:20 作者: custody 時(shí)間: 2025-3-26 23:48
https://doi.org/10.1007/978-3-030-71165-8 can influence beaver behavior, our observations indicate that large-scale human activities, such as the Gabcikovo Dam, have an even larger impact on the beaver population in the Greater Bratislava area.作者: Foreshadow 時(shí)間: 2025-3-27 03:05 作者: Substance 時(shí)間: 2025-3-27 06:57
Seyit Ali Büyüktuna,Halef Okan Do?anond and longer-term front on which to solve the erosion problem is to find the sources of sediment and implement less-erosive agricultural practices. Baseline information will be obtained from permanent vegetation plots, remote sensing images, and the preserve’s records of lake measurements.作者: Lasting 時(shí)間: 2025-3-27 13:05
Prashanth Prabhu,Shezeen Abdul Gafoorer (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作者: 針葉 時(shí)間: 2025-3-27 17:09
Zika Virus Disease: Progress and Prospectsocturnal, monogamous, relatively long-lived rodents that reside in family groups. Beaver activity varies seasonally and by age class. Evidence exists for different roles or different timing of roles played by the sexes and by age class. Individual behaviors and population responses to changing condi作者: membrane 時(shí)間: 2025-3-27 20:08 作者: phlegm 時(shí)間: 2025-3-27 23:58
https://doi.org/10.1007/978-3-030-71165-8ly 23% of its peak. Various changes in productivity, colony composition, dispersal and interactions with other wildlife species were associated with these periods of population change. The changes observed in the Quabbin Reservation beaver population are comparable to changes in an unexploited beave作者: squander 時(shí)間: 2025-3-28 02:45
The Enigmas of Mars, the Red Planet,differ in intensity from other areas. In conclusion, the beavers are adaptable and need little management by humans. Beaver management and control of beaver numbers are driven by conflicts with humans, and not by any needs of the beavers themselves.作者: 聚集 時(shí)間: 2025-3-28 08:36
Book 1999o-American Mammal Congress (July, 1998) was presented by Dr. Michael L. Rosenzweig, a professor at the University of Arizona. Dr. Rosenzweig discussed how humans have used and continue to use natural resources, in- cluding wildlife and wildland. He provided evidence indicating that the current model作者: 頂點(diǎn) 時(shí)間: 2025-3-28 12:31 作者: 透明 時(shí)間: 2025-3-28 15:06
https://doi.org/10.1007/978-1-4615-4781-5conservation; ecology; population dynamics; Tree Biology作者: conscribe 時(shí)間: 2025-3-28 21:28 作者: Spinal-Fusion 時(shí)間: 2025-3-29 01:02
http://image.papertrans.cn/b/image/181966.jpg作者: 鳴叫 時(shí)間: 2025-3-29 04:01
The Structure and Content of the Good,half of the 19th century. Because of a prudent ban on beaver hunting in 1845, a small remnant population of a few hundred individuals survived in southern Norway. This population became the source for subsequent reintroductions to the other Scandinavian countries. Between 1922 and 1940 about 80 Norw作者: Exclaim 時(shí)間: 2025-3-29 08:59
Law, Liberalism, and the Common Good,ring of these two pairs. Currently, the beaver population is rapidly increasing and causing considerable damage to forest and agricultural land. Therefore there is a need to manage the beaver population at a lower, but sustainable level through hunting. However, it is impossible to develop a beaver 作者: 好忠告人 時(shí)間: 2025-3-29 12:26 作者: Accord 時(shí)間: 2025-3-29 16:41 作者: 充足 時(shí)間: 2025-3-29 20:58
Elsa G. Baumeister,Andrea V. Pontorieror fur, meat, and medicinal products for thousands of years. This exploitation led to the almost complete extirpation of beavers from the Baltic region by the late 1800s. Beaver reintroduction programs were initiated in the early to mid 1900s, and the populations recovered and grew. The reintroductio作者: 直覺好 時(shí)間: 2025-3-30 01:44
Adriana E. Kajon,Ramón A. Gonzalezithuania, and others were actively introduced from the former Soviet Union. The population grew slowly from 1945 to the 1970s. In the late 1970s the population began to increase rapidly, and by 1997 there were an estimated 10,000 beavers in Poland. The growth of the population was influenced by the 作者: notification 時(shí)間: 2025-3-30 07:17 作者: Ovulation 時(shí)間: 2025-3-30 09:14 作者: WITH 時(shí)間: 2025-3-30 16:10 作者: DOLT 時(shí)間: 2025-3-30 20:32 作者: Compass 時(shí)間: 2025-3-30 21:25
