| publications-1131 |
PEER REVIEWED ARTICLE |
2017 |
B. Grizzetti , A. Pistocchi , C. Liquete , A. Udias , F. Bouraoui , W. van de Bund |
Human pressures and ecological status of European rivers |
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10.1038/s41598-017-00324-3 |
Uncategorized |
Natural Water Bodies |
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AbstractHumans have increased the discharge of pollution, altered water flow regime and modified the morphology of rivers. All these actions have resulted in multiple pressures on freshwater ecosystems, undermining their biodiversity and ecological functioning. The European Union has adopted an ambitious water policy to reduce pressures and achieve a good ecological status for all water bodies. However, assessing multiple pressures on aquatic ecosystems and understanding their combined impact on the ecological status is challenging, especially at the large scale, though crucial to the planning of effective policies. Here, for the first time, we quantify multiple human pressures and their relationship with the ecological status for all European rivers. We considered ecological data collected across Europe and pressures assessed by pan-European models, including pollution, hydrological and hydromorphological alterations. We estimated that in one third of EUâs territory rivers are in good ecological status. We found that better ecological status is associated with the presence of natural areas in floodplains, while urbanisation and nutrient pollution are important predictors of ecological degradation. We explored scenarios of improvement of rivers ecological status for Europe. Our results strengthen the need to halt urban land take, curb nitrogen pollution and maintain and restore nature along rivers. |
603378 |
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| publications-1132 |
PEER REVIEWED ARTICLE |
2017 |
Nils Teichert , Mario Lepage , Alban Sagouis , Angel Borja , Guillem Chust , Maria Teresa Ferreira , Stéphanie Pasquaud , Rafaela Schinegger , Pedro |
Functional redundancy and sensitivity of fish assemblages in European rivers, lakes and estuarine ecosystems |
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10.1038/s41598-017-17975-x |
Uncategorized |
Natural Water Bodies |
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AbstractThe impact of species loss on ecosystems functioning depends on the amount of trait similarity between species, i.e. functional redundancy, but it is also influenced by the order in which species are lost. Here we investigated redundancy and sensitivity patterns across fish assemblages in lakes, rivers and estuaries. Several scenarios of species extinction were simulated to determine whether the loss of vulnerable species (with high propensity of extinction when facing threats) causes a greater functional alteration than random extinction. Our results indicate that the functional redundancy tended to increase with species richness in lakes and rivers, but not in estuaries. We demonstrated that i) in the three systems, some combinations of functional traits are supported by non-redundant species, ii) rare species in rivers and estuaries support singular functions not shared by dominant species, iii) the loss of vulnerable species can induce greater functional alteration in rivers than in lakes and estuaries. Overall, the functional structure of fish assemblages in rivers is weakly buffered against species extinction because vulnerable species support singular functions. More specifically, a hotspot of functional sensitivity was highlighted in the Iberian Peninsula, which emphasizes the usefulness of quantitative criteria to determine conservation priorities. |
603378 |
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| publications-1133 |
PEER REVIEWED ARTICLE |
2017 |
Janne Alahuhta , Sarian Kosten , Munemitsu Akasaka , Jani Heino |
Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude |
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10.1111/jbi.12978 |
Uncategorized |
Natural Water Bodies |
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AbstractAimWe studied global variation in beta diversity patterns of lake macrophytes using regional data from across the world. Specifically, we examined (1) how beta diversity of aquatic macrophytes is partitioned between species turnover and nestedness within each study region, and (2) which environmental characteristics structure variation in these beta diversity components.LocationGlobal.MethodsWe used presenceâabsence data for aquatic macrophytes from 21 regions distributed around the world. We calculated pairwiseâsite and multipleâsite beta diversity among lakes within each region using SĂžrensen dissimilarity index and partitioned it into turnover and nestedness coefficients. Beta regression was used to correlate the diversity coefficients with regional environmental characteristics.ResultsAquatic macrophytes showed different levels of beta diversity within each of the 21 study regions, with species turnover typically accounting for the majority of beta diversity, especially in highâdiversity regions. However, nestedness contributed 30â50% of total variation in macrophyte beta diversity in lowâdiversity regions. The most important environmental factor explaining the three beta diversity coefficients (total, species turnover and nestedness) was elevation range, followed by relative areal extent of freshwater, latitude and water alkalinity range.Main conclusionsOur findings show that global patterns in beta diversity of lake macrophytes are caused by species turnover rather than by nestedness. These patterns in beta diversity were driven by natural environmental heterogeneity, notably variability in elevation range (also related to temperature variation) among regions. In addition, a greater range in alkalinity within a region, likely amplified by human activities, was also correlated with increased macrophyte beta diversity. These findings suggest that efforts to conserve aquatic macrophyte diversity should primarily focus on regions with large numbers of lakes that exhibit broad environmental gradients. |
603378 |
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| publications-1134 |
PEER REVIEWED ARTICLE |
2016 |
Yongqiang Zhou , Erik Jeppesen , Yunlin Zhang , Kun Shi , Xiaohan Liu , Guangwei Zhu |
Dissolved organic matter fluorescence at wavelength 275/342Â nm as a key indicator for detection of point-source contamination in a large Chinese drinking water lake |
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10.1016/j.chemosphere.2015.09.027 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1135 |
PEER REVIEWED ARTICLE |
2017 |
Lei Zhou , Yongqiang Zhou , Yang Hu , Jian Cai , Chengrong Bai , Keqiang Shao , Guang Gao , Yunlin Zhang , Erik Jeppesen , Xiangming Tang |
Hydraulic connectivity and evaporation control the water quality and sources of chromophoric dissolved organic matter in Lake Bosten in arid northwest China |
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10.1016/j.chemosphere.2017.09.006 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1136 |
PEER REVIEWED ARTICLE |
2018 |
Qingfei Zeng , Erik Jeppesen , Xiaohong Gu , Zhigang Mao , Huihui Chen |
Distribution, fate and risk assessment of PAHs in water and sediments from an aquaculture- and shipping-impacted subtropical lake, China |
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10.1016/j.chemosphere.2018.03.031 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1137 |
PEER REVIEWED ARTICLE |
2015 |
Peter S. Levi , Tenna Riis , Anette B. AlnĂže , Marc Peipoch , Kamilla Maetzke , Christoffer Bruus , Annette Baattrup-Pedersen |
Macrophyte Complexity Controls Nutrient Uptake in Lowland Streams |
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10.1007/s10021-015-9872-y |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1138 |
PEER REVIEWED ARTICLE |
2016 |
Fabien Cremona , Alo Laas , Lauri Arvola , Don Pierson , Peeter NÔges , Tiina NÔges |
Numerical Exploration of the Planktonic to Benthic Primary Production Ratios in Lakes of the Baltic Sea Catchment |
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10.1007/s10021-016-0006-y |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1139 |
PEER REVIEWED ARTICLE |
2017 |
Carolina Trochine , Sandra Brucet , Christine Argillier , Ignasi Arranz , Meryem Beklioglu , LluĂs Benejam , Teresa Ferreira , Trygve Hesthagen , Ker |
Non-native Fish Occurrence and Biomass in 1943 Western Palearctic Lakes and Reservoirs and their Abiotic and Biotic Correlates |
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10.1007/s10021-017-0156-6 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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| publications-1140 |
PEER REVIEWED ARTICLE |
2018 |
Nadine V. Gerner , Issa Nafo , Caroline Winking , Kristina Wencki , Clemens Strehl , Timo Wortberg , André Niemann , Gerardo Anzaldua , Manuel Lago , |
Large-scale river restoration pays off: A case study of ecosystem service valuation for the Emscher restoration generation project |
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10.1016/j.ecoser.2018.03.020 |
Uncategorized |
Natural Water Bodies |
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No abstract available |
603378 |
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