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Søren E. Larsen
Aarhus University
Drainage basinEcologyEnvironmental scienceSTREAMSEnvironmental engineering
154Publications
34H-index
3,572Citations
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Publications 158
Newest
#1Annette Baattrup-Pedersen (AU: Aarhus University)H-Index: 17
#2Daniel Graeber (Helmholtz Centre for Environmental Research - UFZ)H-Index: 15
Last. Tenna Riis (AU: Aarhus University)H-Index: 27
view all 7 authors...
Abstract Low flow and co-occurring stress is a more and more frequent phenomenon these years in small agricultural streams as a consequence of climate change. In the present study we explored short and longer term structural responses of the stream benthic algae community and biofilm metabolism to multiple stress in small streams applying a semi-experimental approach. We hypothesized that i) a reduction in flow in combination with secondary stress (nutrients and sediments) have immediate effects...
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#1Gitte Blicher-Mathiesen (AU: Aarhus University)H-Index: 12
#2Jørgen Windolf (AU: Aarhus University)H-Index: 10
Last. Brian Kronvang (AU: Aarhus University)H-Index: 42
view all 8 authors...
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#1Ewa JabłońskaH-Index: 9
Last. Wiktor KotowskiH-Index: 15
view all 10 authors...
Large-scale re-establishment of wetland buffer zones (WBZ) along rivers is regarded as an effective measure in order to reduce non-point source nitrogen (N) and phosphorus (P) pollution in agricultural catchments. We estimated efficiency and costs of a hypothetical establishment of WBZs along all watercourses in an agricultural landscape of the lower Narew River catchment (north-eastern Poland, 16,444 km2, amounting to 5% of Poland) by upscaling results obtained in five sub-catchments (1087 km2)...
3 CitationsSource
#1Marianne Bruus (AU: Aarhus University)H-Index: 5
#2Jes J. Rasmussen (AU: Aarhus University)H-Index: 19
Last. Peter Wiberg-Larsen (AU: Aarhus University)H-Index: 14
view all 9 authors...
Abstract Terrestrial adult stages of freshwater insects may be exposed to pesticides by wind drift, over-spray, contact or feeding. However, studies addressing insecticide effects on freshwater invertebrates focus primarily on the impact of pesticides reaching the streams and potentially harming the aquatic juvenile stages. This is also reflected in the current risk assessment procedures, which do not include testing of adult freshwater insects. In order to assess the potential impact of insecti...
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#1Carl Christian Hoffmann (AU: Aarhus University)H-Index: 20
#2Søren E. Larsen (AU: Aarhus University)H-Index: 34
Last. Charlotte Kjaergaard (AU: Aarhus University)H-Index: 19
view all 3 authors...
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#1Mette Vodder Carstensen (AU: Aarhus University)H-Index: 2
#2Søren E. Larsen (AU: Aarhus University)H-Index: 34
Last. Carl Christian Hoffmann (AU: Aarhus University)H-Index: 20
view all 4 authors...
Abstract Subsurface flow constructed wetlands with wood chips (SSF-CWs) have proven to effectively reduce the loss of nitrogen (N) from agricultural fields to surface water, however in some cases production of negative side effects such as methane and phosphate occur. We examined if these side effects can be avoided by decreasing the hydraulic retention time (HRT) from on average 82 h to 11 h during summer to autumn in two pilot SSF-CWs. Furthermore, we investigated the potential of the SSF-CWs ...
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#1Hans Thodsen (AU: Aarhus University)H-Index: 14
#2Jes J. Rasmussen (AU: Aarhus University)H-Index: 19
Last. Søren E. Larsen (AU: Aarhus University)H-Index: 34
view all 6 authors...
Purpose Suspended matter (SM) in streams is usually considered of minor importance in Danish environmental management. However, SM has some ecological effects as it may (1) clog fish spawning grounds and (2) act as an important agent for transport and exposure of biota to chemical substances, such as phosphorus and toxic inorganic (e.g. heavy metals) and organic (e.g. pesticides) substances.
1 CitationsSource
#1Henrik TornbjergH-Index: 3
#2Brian KronvangH-Index: 42
Last. Søren E. LarsenH-Index: 34
view all 3 authors...
#1Annette Baattrup-Pedersen (AU: Aarhus University)H-Index: 17
#2Søren E. Larsen (AU: Aarhus University)H-Index: 34
Last. Tenna Riis (AU: Aarhus University)H-Index: 27
view all 4 authors...
Abstract The Water Framework Directive (WFD), which is the most comprehensive instrument of EU water policy, is more relevant than ever. Sixty percent of Europe's surface water bodies still fail to achieve good ecological status and a multitude of new stressors continue to emerge. A sustained and wholehearted water management effort is therefore of highest priority. Here, we present a new biological assessment approach specifically designed to safeguard sustainable water management under multipl...
2 CitationsSource
#1Zhengwen Liu (CAS: Chinese Academy of Sciences)H-Index: 19
#2Jinrun Hu (JNU: Jinan University)H-Index: 1
Last. Erik Jeppesen (CAS: Chinese Academy of Sciences)H-Index: 87
view all 10 authors...
Abstract Fish manipulation has been used to restore lakes in the temperate zone. Often strong short-term cascading effects have been obtained, but the long term-perspectives are less clear. Fish manipulation methods are far less advanced for warm lakes, and it is debatable whether it is, in fact, possible to create a trophic cascade in warm lakes due to the dominance and high densities of fast-reproducing omnivorous fish. However, removal of benthic feeding fish also reduce disturbance of the se...
10 CitationsSource
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