نتایج جستجو برای: hydrobiology
تعداد نتایج: 175 فیلتر نتایج به سال:
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3 Minmin Chen, Michael C. Fontaine*, Yacine Ben Chehida, Jinsong Zheng*, Frédéric 4 Labbé, Zhigang Mei, Yujiang Hao, Kexiong Wang, Min Wu, Qingzhong Zhao, Ding 5 Wang* 6 7 1 The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, 8 Institute of Hydrobiology of Chinese Academy of Sciences, Wuhan 430072, China; 9 2 Research Center of Aquatic Organism Conservati...
Encroachment of riparian vegetation into regulated river channels exerts control over fluvial processes, channel morphology, and aquatic ecology. Reducing encroachment of terrestrial vegetation is an oft-cited objective of environmental flow recommendations, but there has been no systematic assessment of the evidence for and against the widely-accepted cause-and-effect mechanisms involved. We s...
New Zealand Journal of Ecology (1994) 18(2): 169-176 ©New Zealand Ecological Society 3) If disturbances are of intermediate frequency and/or intensity there will be repeated opportunities for the re-establishment of pioneer populations which would otherwise be outcompeted and the populations of the successful competitors could withstand the disturbance without completely taking over the communi...
Chloride is a relatively unreactive plant nutrient that has long been used as a biogeochemical tracer but also can be a pollutant causing aquatic biology impacts when concentrations are high, typically from rock salt applications used for deicing roads. Chloride inputs to watersheds are most often from atmospheric deposition, road salt, or agricultural fertilizer, although studies on agricultur...
Because urea is bioenergetically expensive to synthesize, few aquatic teleostean (bony) fish make or excrete much urea beyond early development and excrete the majority of nitrogenous waste as the readily diffusible ammonia. The gulf toadfish is one of a few adult teleostean fish that excretes predominantly urea. Most studies of chemosensing by fish predators have focused on amino acids as odor...
The Arctic is highly sensitive to increasing global temperatures and is projected to experience dramatic ecological shifts in the next few decades. Oligosaline lakes are common in arctic regions where evaporation surpasses precipitation, however these extreme microbial communities are poorly characterized. Many oligosaline lakes, in contrast to freshwater ones, experience annual blooms of hapto...
Phosphorus (P) reserve, largely derived from phosphate rock, microalgae utilization technologies may greatly accelerate is essential for crop growth to support the growing world population. However, a significant proportion of phosphorus used as a fertilizer runs into natural waters, causing eutrophication and ecological damage. Moreover, most P in the food is eventually discharged as waste aft...
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