| publications-1251 |
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2018 |
Filipe Romão , José Santos , Christos Katopodis , António Pinheiro , Paulo Branco |
How Does Season Affect Passage Performance and Fatigue of Potamodromous Cyprinids? An Experimental Approach in a Vertical Slot Fishway |
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10.3390/w10040395 |
Data Management & Analytics |
Uncategorized |
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Most fishway studies are conducted during the reproductive period, yet uncertainty remains on whether results may be biased if the same studies were performed outside of the migration season. The present study assessed fish passage performance of a potamodromous cyprinid, the Iberian barbel (Luciobarbus bocagei), in an experimental full-scale vertical slot fishway during spring (reproductive season) and early-autumn (non-reproductive season). Results revealed that no significant differences were detected on passage performance metrics, except for entry efficiency. However, differences between seasons were noted in the plasma lactate concentration (higher in early-autumn), used as a proxy for muscular fatigue after the fishway navigation. This suggests that, for potamodromous cyprinids, the evaluation of passage performance in fishways does not need to be restricted to the reproductive season and can be extended to early-autumn, when movements associated with shifts in home range may occur. The increased effort during the non-reproductive period suggests that adapting the operational regime of fishways, at biologically meaningful seasons in a year, should be assessed by considering the physiological state of the target species. |
603378 |
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| publications-1252 |
PEER REVIEWED ARTICLE |
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Forsius, M., RÀike, A., Poutanen, H., Mattsson, T., KankaanpÀÀ, S., Kortelainen, P., Vuorilehto, V.-P. |
Observed and predicted future changes of total organic carbon in the lake PÀijÀnne catchment (southern Finland): Implications for water treatment of the Helsinki metropolitan area |
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Data Management & Analytics |
Wastewater Treatment Plants |
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No abstract available |
603378 |
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| publications-1253 |
PEER REVIEWED ARTICLE |
2015 |
Y Cao , ĂM Neif , W Li , J Coppens , N Filiz , TL Lauridsen , TA Davidson , M SĂžndergaard , E Jeppesen |
Heat wave effects on biomass and vegetative growth of macrophytes after long-term adaptation to different temperatures: a mesocosm study |
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10.3354/cr01352 |
Data Management & Analytics |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1254 |
PEER REVIEWED ARTICLE |
2015 |
D Trolle , A Nielsen , J Rolighed , H Thodsen , HE Andersen , IB Karlsson , JC Refsgaard , JE Olesen , K Bolding , B Kronvang , M SĂžndergaard , E Jep |
Projecting the future ecological state of lakes in Denmark in a 6 degree warming scenario |
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10.3354/cr01278 |
Data Management & Analytics |
River Basins |
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No abstract available |
603378 |
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| publications-1255 |
PEER REVIEWED ARTICLE |
2016 |
Stefan Lorenz , Marc Leszinski , Daniel Graeber |
Meander reconnection method determines restoration success for macroinvertebrate communities in a German lowland river |
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10.1002/iroh.201501823 |
Simulation & Modeling |
Wastewater Treatment Plants |
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Reâmeandering of degraded rivers is a frequently implemented measure in river restoration. A simple solution is reconnection of old meanders; however, its success likely depends on the reconnection method. We conducted a field study to analyze the benefits of a fully reconnected (fully opened meander, blocked main channel) and a partially reconnected meander (opened downstream, pipe bypass from main channel upstream, still open main channel) for macroinvertebrate communities in a German lowland river. Immediately upon reconnection of the two meanders, habitat diversity, and macroinvertebrates were recorded for three years with sampling in spring and in summer each year. The results of a principal response curve analysis show that the macroinvertebrate community in the fully reconnected meander reflected main channel reference conditions after 1.5 years. The macroinvertebrate community composition was not improved relative to inâstream reference conditions within the partially reconnected meander, which could be attributed to the almost complete lack of flow changes that resulted in missing improvements of substrate diversity. Our results show that the meander reconnection method must sufficiently affect the basic hydromorphological requirements to achieve reference macroinvertebrate community composition. Measures including hydromorphological conditions are therefore recommended for employment in environmental management. |
603378 |
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| publications-1256 |
PEER REVIEWED ARTICLE |
2017 |
ĂlkĂŒ Nihan TavĆanoÄlu , Michal Ć orf , Konstantinos Stefanidis , Sandra Brucet , Semra TĂŒrkan , Helen Agasild , Didier L. Baho , Ulrike Scharfenb |
Effects of nutrient and water level changes on the composition and size structure of zooplankton communities in shallow lakes under different climatic conditions: a pan-European mesocosm experiment |
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10.1007/s10452-017-9615-6 |
Data Management & Analytics |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1257 |
PEER REVIEWED ARTICLE |
2015 |
Hu He , Xiaolong Zhu , Xiaolan Song , Erik Jeppesen , Zhengwen Liu |
Phytoplankton response to winter warming modified by large-bodied zooplankton: an experimental microcosm study |
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10.4081/jlimnol.2015.1066 |
Simulation & Modeling |
River Basins |
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No abstract available |
603378 |
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| publications-1258 |
PEER REVIEWED ARTICLE |
2017 |
Tiina NÔges , Orlane Anneville , Jean Guillard , Juta Haberman , Ain JÀrvalt , Marina Manca , Giuseppe Morabito , Michela Rogora , Stephen J. Thacke |
Fisheries impacts on lake ecosystem structure in the context of a changing climate and trophic state |
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10.4081/jlimnol.2017.1640 |
Data Management & Analytics |
Natural Water Bodies |
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<p>Through cascading effects within lake food webs, commercial and recreational fisheries may indirectly affect the abundances of organisms at lower trophic levels, such as phytoplankton, even if they are not directly consumed. So far, interactive effects of fisheries, changing trophic state and climate upon lake ecosystems have been largely overlooked. Here we analyse case studies from five European lake basins of differing trophic states (Lake VÔrtsjÀrv, two basins of Windermere, Lake Geneva and Lake Maggiore) with long-term limnological and fisheries data. Decreasing phosphorus concentrations (re-oligotrophication) and increasing water temperatures have been reported in all five lake basins, while phytoplankton concentration has decreased only slightly or even increased in some cases. To examine possible ecosystem-scale effects of fisheries, we analysed correlations between fish and fisheries data, and other food web components and environmental factors. Re-oligotrophication over different ranges of the trophic scale induced different fish responsesIn the deeper lakes Geneva and Maggiore, we found a stronger link between phytoplankton and planktivorous fish and thus a more important cascading top-down effect than in other lakes. This connection makes careful ecosystem-based fisheries management extremely important for maintaining high water quality in such systems. We also demonstrated that increasing water temperature might favour piscivores at low phosphorus loading, but suppresses them at high phosphorus loading and might thus either enhance or diminish the cascading top-down control over phytoplankton with strong implications for water quality.</p> |
603378 |
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| publications-1259 |
PEER REVIEWED ARTICLE |
2015 |
Franco Teixeira-de Mello , Mariana Meerhoff , Ivan GonzĂĄlez-Bergonzoni , Esben Astrup Kristensen , Annette Baattrup-Pedersen , Erik Jeppesen |
Influence of riparian forests on fish assemblages in temperate lowland streams |
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10.1007/s10641-015-0462-9 |
Uncategorized |
River Basins |
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No abstract available |
603378 |
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| publications-1260 |
PEER REVIEWED ARTICLE |
2016 |
Jinlei Yu , Wei Zhen , Baohua Guan , Ping Zhong , Erik Jeppesen , Zhengwen Liu |
Dominance of Myriophyllum spicatum in submerged macrophyte communities associated with grass carp |
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10.1051/kmae/2016011 |
Uncategorized |
River Basins |
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No abstract available |
603378 |
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