Keresés
43 találatból megjelenítve: 21-30
Cím: Relative Importance of Climate and Spatial Processes in Shaping Species Composition, Functional Structure and Beta Diversity of Phytoplankton in a Large River
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Dátum: 2022
Feltöltve: 2023-02-20
(2022)
Although metacommunity dynamics of lentic phytoplankton are relatively well-documented, studies on the role of environmental and spatial processes in shaping phytoplankton communities of large rivers are still scarce. Here, ...
Cím: New observations about the fertilisation capacity and latency time of sperm inseminated into the ovary of African catfish (Clarias gariepinus), an oviparous modelfish
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Dátum: 2020
Feltöltve: 2023-02-15
(2020)
"In our former study, we proved that sperm injected into the ovary by catheter through the oviduct 10-12 h before hormonally induced ovulation, retains its fertilizing capacity for several hours. Using this method, we ...
Cím: Cell Size Decrease and Altered Size Structure of Phytoplankton Constrain Ecosystem Functioning in the Middle Danube River Over Multiple Decades
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Dátum: 2020
Feltöltve: 2023-02-15
(2020)
Reduced body size is among the universal ecological responses to global warming. Our knowledge on how altered body size affects ecosystem functioning in ectothermic aquatic organisms is still limited. We analysed trends ...
Cím: Exogenic Production of Bioactive Filamentous Biopolymer by Monogonant Rotifers
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Dátum: 2021
Feltöltve: 2023-02-15
(2021)
The chemical ecology of rotifers has been little studied. A yet unknown property is presented within some monogonant rotifers, namely the ability to produce an exogenic filamentous biopolymer, named ‘Rotimer’. This ...
Cím: In situ modelling of biofilm formation in a hydrothermal spring cave
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Dátum: 2020
Feltöltve: 2023-02-15
(2020)
Attachment of microorganisms to natural or artificial surfaces and the development of biofilms are complex processes which can be influenced by several factors. Nevertheless, our knowledge on biofilm formation in karstic ...
Cím: Ecosystem shift of a mountain lake under climate and human pressure: A move out from the safe operating space
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Dátum: 2020
Feltöltve: 2023-02-16
(2020)
"A multiproxy approach including chironomid, diatom, pollen and geochemical analyses was applied on shortgravitational cores retrieved from an alpine lake (Lacul Bâlea) in the Southern Carpathians (Romania) to unveilhow ...
Cím: Effect of Temperature on the Size of Sedimentary Remains of Littoral Chydorids
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Dátum: 2020
Feltöltve: 2023-02-16
(2020)
The body size of aquatic invertebrates is, to a great extent, dependent on ambient temperature, but size distributions are also determined by other factors like food supply and predation. The e ff ect of temperature on ...
Cím: Trait-based diatom functional diversity as an appropriate tool for understanding the effects of environmental changes in soda pans
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Dátum: 2020
Feltöltve: 2023-02-16
(2020)
Saline lakes, among the most seriously endangered ecosystems, are threatened due to climate change and human activities. One valuable feature of these environments is that they constitute areas of high biodiversity. ...
Cím: Transboundary Water Governance in the European Union: The (Unresolved) Allocation Question
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Dátum: 2019
Feltöltve: 2023-02-17
(2019)
While the European Union (EU) has one of the most extensive and sophisticated supranational water policyworldwide, its transboundary governance framework has certain structural deficiencies that may eventually giverise to ...
Cím: Trait-based community assembly of epiphytic diatoms in saline astatic ponds: a test of the stress-dominance hypothesis
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Dátum: 2019
Feltöltve: 2023-02-17
(2019)
The stress dominance hypothesis (SDH) postulates that strong environmental gradients drive trait convergence in communities over limiting similarity. Previous studies, conducted mostly with terrestrial plant communities, ...