標(biāo)題: Titlebook: Conservation of Endangered Freshwater Fish in Europe; A. Kirchhofer,D. Hefti Book 1996 Birkh?user Verlag, PO Box 133, CH-4010 Basel, Switz [打印本頁(yè)] 作者: 小缺點(diǎn) 時(shí)間: 2025-3-21 16:42
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe影響因子(影響力)
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe影響因子(影響力)學(xué)科排名
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe被引頻次
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe被引頻次學(xué)科排名
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe年度引用
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe年度引用學(xué)科排名
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe讀者反饋
書(shū)目名稱Conservation of Endangered Freshwater Fish in Europe讀者反饋學(xué)科排名
作者: Detonate 時(shí)間: 2025-3-21 20:29
Threatened freshwater fishes of Great Britainreduction in species from south to north. Of the 56 species on the British list, 15 are introduced and 41 are native species. Nine of the latter are regarded as being significantly threatened and in need of conservation protection and management..Five of these fish are anadromous species. The sturge作者: 沙文主義 時(shí)間: 2025-3-22 00:48 作者: 反抗者 時(shí)間: 2025-3-22 05:22 作者: Arb853 時(shí)間: 2025-3-22 11:39 作者: Atrium 時(shí)間: 2025-3-22 13:23
The Red Data List of the freshwater lampreys (Cyclostomata) and fish (Pisces) of Sloveniasibly extinct (Ex?), 19 as endangered (E), eight as vulnerable (V), four as rare (R), seven as indeterminate (I), and 17 as insufficiently known (K). The four lamprey species are endangered (E)..The Slovenian rivers belong to two different European drainage areas, the river basins of the Danube (Bla作者: Atrium 時(shí)間: 2025-3-22 21:03 作者: 集中營(yíng) 時(shí)間: 2025-3-23 00:33 作者: Nibble 時(shí)間: 2025-3-23 03:51 作者: TIGER 時(shí)間: 2025-3-23 09:23 作者: conspicuous 時(shí)間: 2025-3-23 11:41
Long-term changes in the fish community of Neusiedler See (Burgenland, Austria)garian border was carried out between 1990 and 1992..According to the literature, 19 indigenous fish species occur in the lake. In addition another ten species have occasionally been found in the lake but they are usually confined to the small tributaries of the catchment area. Seven alien species w作者: Coeval 時(shí)間: 2025-3-23 14:07
Natural regenerations of endangered fish populations in the Pilica drainage basin after reducing humes. Stopping sewage inflow into the Pilica River and its tributaries due to the construction of a man-made reservoir supplying drinking water in the middle course of the river, caused a natural regeneration of many populations, including the appearance of fish in a river section in which fish were f作者: A精確的 時(shí)間: 2025-3-23 19:15 作者: intuition 時(shí)間: 2025-3-24 00:38
The decline of the European sturgeon , in the Baltic and North Seafficial statistics and publications of the 19th and 20th century. Information about the last catches of adult . in the North Sea, is given in the hope of starting a reestablishment programme. The last sturgeons in the Baltic Sea were caught in 1931 (near the isle of Ruegen), in 1950 (in the Szcezcin作者: 航海太平洋 時(shí)間: 2025-3-24 03:03
Occurrence and distribution of twaite shad , Lacépède) in the lower Elbe River, Germanye shad Elbe population. No significant differences were found between mean total abundances of twaite shad from 1989 to 1990 compared to 1984 to 1986. From 1991 to 1994 lower mean total abundances were estimated and found to be influenced by lower abundances of age group 0.. No significant spawning 作者: 燒瓶 時(shí)間: 2025-3-24 09:19 作者: ECG769 時(shí)間: 2025-3-24 13:46 作者: mettlesome 時(shí)間: 2025-3-24 17:00 作者: Rankle 時(shí)間: 2025-3-24 22:55
Understanding Mechanical Ventilationn, while 25 species are included in the EU Council Directive on the Conservation of Natural Habitats in 1992. Nevertheless, Spanish conservation laws are still insufficient since only seven species are protected by the National Catalogue of Threatened Species in 1990.作者: 懲罰 時(shí)間: 2025-3-24 23:44
The Complications of Mechanical Ventilation,ght are vulnerable, four are rare, four are indeterminate, and three are insufficiently known. The Adriatic river basin is inhabited by 48 fish species and two lampreys. Two lampreys are endangered. One fish species is extinct, three are endangered, one is vulnerable, three are indeterminate and 16 are insufficiently known.作者: Heterodoxy 時(shí)間: 2025-3-25 04:07 作者: 債務(wù) 時(shí)間: 2025-3-25 09:15
Agriculture, fournisseurs, filières fascine or limestone boulders, is unfavourable for fish only in the initial phase and more in small than in large rivers. Revetments provide many hiding places for fish and make net operation for poachers more difficult, but they are quickly damaged by water flow.作者: Mendicant 時(shí)間: 2025-3-25 11:45
Médecines d‘Asie: Savoirs et Pratiquesarlings. In River Skjern ? the material will be offspring of the local stock. In the other rivers where the natural stocks have become extinct, the stocking material will be offspring from Irish, Scottish and Swedish salmon stocks, sometimes combined with material from River Skjern ?.作者: grounded 時(shí)間: 2025-3-25 16:45
Endangered freshwater fish of Spainn, while 25 species are included in the EU Council Directive on the Conservation of Natural Habitats in 1992. Nevertheless, Spanish conservation laws are still insufficient since only seven species are protected by the National Catalogue of Threatened Species in 1990.作者: Osteons 時(shí)間: 2025-3-25 21:51 作者: 固定某物 時(shí)間: 2025-3-26 01:04 作者: decipher 時(shí)間: 2025-3-26 05:04
Natural regenerations of endangered fish populations in the Pilica drainage basin after reducing hum fascine or limestone boulders, is unfavourable for fish only in the initial phase and more in small than in large rivers. Revetments provide many hiding places for fish and make net operation for poachers more difficult, but they are quickly damaged by water flow.作者: HEDGE 時(shí)間: 2025-3-26 10:30 作者: 壓倒性勝利 時(shí)間: 2025-3-26 13:46 作者: STING 時(shí)間: 2025-3-26 20:40 作者: elucidate 時(shí)間: 2025-3-26 22:54 作者: Mystic 時(shí)間: 2025-3-27 02:55
Automated Classification of Plaquesllan, ., and smelt, .. Current EEC and European legislation designed to protect threatened freshwater fish species is reviewed as a basis for recommending the enactment of specific conservation legislation in Ireland.作者: Temporal-Lobe 時(shí)間: 2025-3-27 07:55 作者: 高興去去 時(shí)間: 2025-3-27 10:17 作者: BILK 時(shí)間: 2025-3-27 13:47 作者: COM 時(shí)間: 2025-3-27 17:52
The decline of the European sturgeon , in the Baltic and North Searopean sturgeon populations are discussed. Efforts to reestablish the north European sturgeon should be based on the last two reproductive populations (also threatened by extinction) in the Rivers Gironde (France) and Rioni (Georgia). A cooperative effort of research centres located in the former area of distribution of . is required.作者: 肉身 時(shí)間: 2025-3-27 23:51
Cellulose acetate electrophoresis for screening transferrin polymorphism in brown trout (, L.) populrin alleles. We recommend cellulose acetate electrophoresis which has several advantages as compared to previous methods of separation and which is suitable for routine analysis of large samples within short time.作者: 花費(fèi) 時(shí)間: 2025-3-28 03:06
The status of the fish fauna in the Czech Republicecies are considered endangered to various degrees (Critical, Endangered, Vulnerable, Susceptible). Two fish species are evaluated as conservation dependent, while eight further species have been included in the low risk category. Seven species have been referred to the supplementary category rare, and 15 species are considered as not endangered.作者: 祖先 時(shí)間: 2025-3-28 07:25
Design Pattern Collection for iTV,their geographic origin and taxonomic status should be strictly observed. The Red Data Books helped to draw attention to the endangered status of the fish fauna considerably, and it is expected that new editions should record the status of species according to respective watersheds instead of administrative and/or political boundaries.作者: 無(wú)政府主義者 時(shí)間: 2025-3-28 12:32
General considerations regarding the decline of speciestheir geographic origin and taxonomic status should be strictly observed. The Red Data Books helped to draw attention to the endangered status of the fish fauna considerably, and it is expected that new editions should record the status of species according to respective watersheds instead of administrative and/or political boundaries.作者: 品牌 時(shí)間: 2025-3-28 18:16 作者: Formidable 時(shí)間: 2025-3-28 21:01 作者: mutineer 時(shí)間: 2025-3-29 01:38
Advances in Life Scienceshttp://image.papertrans.cn/c/image/235771.jpg作者: NOT 時(shí)間: 2025-3-29 05:28 作者: 的’ 時(shí)間: 2025-3-29 08:09
978-3-0348-9867-6Birkh?user Verlag, PO Box 133, CH-4010 Basel, Switzerland 1996作者: 放肆的你 時(shí)間: 2025-3-29 15:25 作者: CRAFT 時(shí)間: 2025-3-29 16:16 作者: Immortal 時(shí)間: 2025-3-29 21:13 作者: 撤退 時(shí)間: 2025-3-30 03:13 作者: machination 時(shí)間: 2025-3-30 06:15 作者: Disk199 時(shí)間: 2025-3-30 10:47 作者: Dignant 時(shí)間: 2025-3-30 14:15
https://doi.org/10.1007/978-1-910315-02-6 the habitat measured. Out of the 79 fish species known from Hungary, 29 species are legally protected and 22 of these were found in this study. For each of the protected species, habitat characteristics and accompanying species are summarized.作者: PHON 時(shí)間: 2025-3-30 17:42
https://doi.org/10.1007/978-2-287-34692-7eased to 62 as six species or forms (9.7%; ., anadromous form of . and . m. .) have become extinct. Another 36 species or forms (58.1%) are regarded as being threatened and in need of conservation protection. Using the IUCN categories, ten (9.7%) of the latter belong to category ., six (9.7%) to cat作者: 停止償付 時(shí)間: 2025-3-30 22:13
Médecines d‘Asie: Savoirs et PratiquesUCN, 1994), two lamprey species are considered to be extinct in the wild, together with a further eleven fish taxa. Two lamprey species and 12 fish species are considered endangered to various degrees (Critical, Endangered, Vulnerable, Susceptible). Two fish species are evaluated as conservation dep作者: cipher 時(shí)間: 2025-3-31 03:33 作者: 舊病復(fù)發(fā) 時(shí)間: 2025-3-31 07:16
https://doi.org/10.1007/978-2-287-34692-7garian border was carried out between 1990 and 1992..According to the literature, 19 indigenous fish species occur in the lake. In addition another ten species have occasionally been found in the lake but they are usually confined to the small tributaries of the catchment area. Seven alien species w作者: 贊成你 時(shí)間: 2025-3-31 09:20 作者: 為寵愛(ài) 時(shí)間: 2025-3-31 15:55
Agriculture, fournisseurs, filièresation and stock management are proposed..The European brook lamprey (. is endangered by many small habitat modifications. Conservation can only be successful if the species’ ecology and habitat requirements are observed for all river engineering projects, maintenance plans and water quality programm作者: delegate 時(shí)間: 2025-3-31 18:28 作者: 溺愛(ài) 時(shí)間: 2025-4-1 01:46
https://doi.org/10.1007/978-2-287-99044-1e shad Elbe population. No significant differences were found between mean total abundances of twaite shad from 1989 to 1990 compared to 1984 to 1986. From 1991 to 1994 lower mean total abundances were estimated and found to be influenced by lower abundances of age group 0.. No significant spawning 作者: 烤架 時(shí)間: 2025-4-1 03:09 作者: 盲信者 時(shí)間: 2025-4-1 08:58
https://doi.org/10.1007/978-2-287-99044-1e Mediterranean drainage system. Therefore, we would expect that autochthonous brown trout populations from this area show the Mediterranean alleles. In most cases, however, we found Atlantic alleles in high frequencies (f > 0.8). Intense stocking has occurred in this area with hatchery strains orig
