小鹿 发表于 2025-3-28 16:46:17
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https://doi.org/10.1007/978-1-4842-2394-9phic distance among sites, between 0.05 and 300 km. Isofemale lines within sites showed little or no reproductive isolation, but nearly complete isolation among sites. Reproductive isolation was also independent of morphology. These results suggest that the . population at each site could be conside教育学 发表于 2025-3-29 01:23:46
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https://doi.org/10.1007/978-3-531-93199-9ar shifts in the structure of the guilds. Flow preference and reproduction ecology of river fish are closely linked. The proportion of rheophilic species in the fish community decreases downstream, and the proportions of limnophilic and eurytopic species increase. Lithophilic and psammophilic spawnemusicologist 发表于 2025-3-29 10:07:36
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Spezielle pathologische Anatomie is an increased dilution of settling organic particles and their nutrients, resulting in a decrease in BP per litre. Conversely, when BP is expressed in areal units (m.), hypolimnetic production increases with increasing hypolimnetic thickness. Water column thickness is a master variable, which togGROSS 发表于 2025-3-29 18:20:47
J. J. López-Ibor,M. Linden,J. Gibertea that may need restoration; (2) an area that had a high conservation value and; (3) a region that was identified as having significant biodiversity loss but with high potential to respond to rehabilitation and become a biodiversity hotspot. These examples highlight the use of the new framework asfloaters 发表于 2025-3-29 19:43:49
https://doi.org/10.1007/978-3-642-59627-8 Historically the social value of recreational fishing was usually more important than conserving biodiversity. Globalisation of alien fish species for sport is best illustrated by rainbow trout — now in 82 countries, and still spreading, along with the associated expensive angling gear, magazines a飓风 发表于 2025-3-30 02:36:44
I. Iancu,P. N. Dannon,Y. Sasson,J. Zoharand, in some cases, watershed/reservoir relationships, and the impact of non-point and point sources of nutrients. Numerous studies have been dedicated to describing aquatic biota, its relationship with environmental factors, and the impacts of degradation/pollution/ eutrophication on biodiversity.婚姻生活 发表于 2025-3-30 04:15:03
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