Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Søren Ejling Larsen"'
Publikováno v:
Boundary-Layer Meteorology. 178:415-434
A model for the spectrum of the lateral velocity component $$S_v(f)$$ is developed for a frequency range from about 0.2 $$\hbox {day}^{-1}$$ to the turbulence inertial subrange, with the intent of improving the calculation of flow meandering over are
Autor:
Søren Ejling Larsen, Hans Estrup Andersen, Brian Kronvang, Jes J. Rasmussen, Anders Lade Nielsen, Hans Thodsen
Publikováno v:
Journal of Soils and Sediments. 19:3068-3082
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 exposu
Publikováno v:
Boundary-Layer Meteorology. 171:191-212
Open cellular structures are frequently observed accompanying cold fronts over the North Sea. Through a two-day case study, measurements from two sites that are 100 km apart, and both covered by open cells, show that the turbulence is characterized b
Autor:
Torben L. Lauridsen, Yu Cao, Meryem Beklioglu, Nur Filiz, Søren Ejling Larsen, Joachim Audet, Érika M. Neif, Tserenpil Sh, Martin Søndergaard, Thomas Davidson, Erik Jeppesen
Publikováno v:
Water, Vol 13, Iss 127, p 127 (2021)
Jeppesen, E, Audet, J, Davidson, T A, Neif, É M, Cao, Y, Filiz, N, Lauridsen, T L, Larsen, S E, Beklioğlu, M, Sh, T & Søndergaard, M 2021, ' Nutrient loading, temperature and heat wave effects on nutrients, oxygen and metabolism in shallow lake mesocosms pre-adapted for 11 years ', Water (Switzerland), vol. 13, no. 2, 127 . https://doi.org/10.3390/w13020127
Water
Volume 13
Issue 2
Jeppesen, E, Audet, J, Davidson, T A, Neif, É M, Cao, Y, Filiz, N, Lauridsen, T L, Larsen, S E, Beklioğlu, M, Sh, T & Søndergaard, M 2021, ' Nutrient loading, temperature and heat wave effects on nutrients, oxygen and metabolism in shallow lake mesocosms pre-adapted for 11 years ', Water (Switzerland), vol. 13, no. 2, 127 . https://doi.org/10.3390/w13020127
Water
Volume 13
Issue 2
Global changes (e.g., warming and population growth) affect nutrient loadings and temperatures, but global warming also results in more frequent extreme events, such as heat waves. Using data from the world&rsquo
s longest-running shallow lake e
s longest-running shallow lake e
Autor:
Søren Ejling Larsen, Christian Kjær, Jes J. Rasmussen, Beate Strandberg, Peter Sørensen, Jesper Bak, Marianne Bruus, Morten Tune Strandberg, Peter Wiberg-Larsen
Publikováno v:
Environmental Toxicology and Chemistry
Kjær, C, Sørensen, P B, Wiberg-Larsen, P, Bak, J, Bruus, M, Strandberg, B, Larsen, S E, Rasmussen, J J & Strandberg, M 2021, ' Vulnerability of Aquatic Insect Species to Insecticides, Depending on Their Flight Period and Adult Life Span ', Environmental Toxicology and Chemistry, vol. 40, no. 6, pp. 1778-1787 . https://doi.org/10.1002/etc.5025
Kjær, C, Sørensen, P B, Wiberg-Larsen, P, Bak, J, Bruus, M, Strandberg, B, Larsen, S E, Rasmussen, J J & Strandberg, M 2021, ' Vulnerability of Aquatic Insect Species to Insecticides, Depending on Their Flight Period and Adult Life Span ', Environmental Toxicology and Chemistry, vol. 40, no. 6, pp. 1778-1787 . https://doi.org/10.1002/etc.5025
Effects of insecticides on terrestrial adult life stages of otherwise aquatic insects, such as mayflies (Ephemeroptera), stoneflies (Plecoptera), and caddisflies (Trichoptera), are largely unknown. In the present study, a risk model was used to pinpo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::251e055c7f493bdc6804bfedb8eab053
https://hdl.handle.net/11250/2985626
https://hdl.handle.net/11250/2985626
Autor:
Christian Damgaard, Marianne Bruus, Beate Strandberg, Morten Tune Strandberg, Peter Wiberg-Larsen, Søren Ejling Larsen, Peter Sørensen, Christian Kjær, Jes J. Rasmussen
Publikováno v:
Sørensen, P B, Kjær, C, Wiberg-Larsen, P, Bruus, M, Strandberg, B, Rasmussen, J, Damgaard, C F, Larsen, S E & Strandberg, M T 2020, ' Pesticide risk indicator for terrestrial adult stages of aquatic insects ', Ecological Indicators, vol. 118, pp. 106718 . https://doi.org/10.1016/j.ecolind.2020.106718
Many taxonomic groups of freshwater insects have a reproductive terrestrial life stage, and some are highly sensitive to insecticides. In agricultural landscapes, it is likely that streams and rivers often run along agricultural fields treated with p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::783d705e8da3813f27152330a2835488
https://pure.au.dk/portal/da/publications/pesticide-risk-indicator-for-terrestrial-adult-stages-of-aquatic-insects(59ce6870-9cf4-4553-8902-6c7a5346c4f8).html
https://pure.au.dk/portal/da/publications/pesticide-risk-indicator-for-terrestrial-adult-stages-of-aquatic-insects(59ce6870-9cf4-4553-8902-6c7a5346c4f8).html
Autor:
Kun Guo, Søren Ejling Larsen, Jes J. Rasmussen, Tenna Riis, Helena Kallestrup, Annette Baattrup-Pedersen, Daniel Graeber
Publikováno v:
Baattrup-Pedersen, A, Graeber, D, Kallestrup, H, Guo, K, Rasmussen, J J, Larsen, S E & Riis, T 2020, ' Effects of low flow and co-occurring stressors on structural and functional characteristics of the benthic biofilm in small streams ', Science of the Total Environment, vol. 733, 139331, pp. 139331 . https://doi.org/10.1016/j.scitotenv.2020.139331
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 al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab63dfb90b6bae0c6df8d27acf2d369
https://pure.au.dk/portal/da/publications/effects-of-low-flow-and-cooccurring-stressors-on-structural-and-functional-characteristics-of-the-benthic-biofilm-in-small-streams(79a98ed1-dbff-4f9b-ae1a-b718795e390a).html
https://pure.au.dk/portal/da/publications/effects-of-low-flow-and-cooccurring-stressors-on-structural-and-functional-characteristics-of-the-benthic-biofilm-in-small-streams(79a98ed1-dbff-4f9b-ae1a-b718795e390a).html
Publikováno v:
Jørgensen, H E, Sørensen, L L & Larsen, S E 2020, ' A simple model of chemistry effects on the Air-Sea CO 2 exchange coefficient ', Journal of Geophysical Research: Oceans, vol. 125, no. 6, e2018JC014808 . https://doi.org/10.1029/2018jc014808
Jørgensen, H E, Sørensen, L L & Larsen, S E 2020, ' A Simple Model of Chemistry Effects on the Air-Sea CO 2 Exchange Coefficient ', Journal of Geophysical Research: Oceans, vol. 125, no. 6, e2018JC014808 . https://doi.org/10.1029/2018JC014808
Jørgensen, H E, Sørensen, L L & Larsen, S E 2020, ' A Simple Model of Chemistry Effects on the Air-Sea CO 2 Exchange Coefficient ', Journal of Geophysical Research: Oceans, vol. 125, no. 6, e2018JC014808 . https://doi.org/10.1029/2018JC014808
The transfer of CO2 between air and water can be quantified by the use of a transfer or exchange coefficient. Here we have studied the effect on the exchange coefficient of CO2 from inclusion of the carbonate buffer system in water. The methodology h
Autor:
Ane Kjeldgaard, Brian Kronvang, Henrik Tornbjerg, Søren Ejling Larsen, Jørgen Windolf, Hans Thodsen
Intensive monitoring data from the Danish National Monitoring programme (NOVANA) from 24 smaller catchments (mean: 14 km2) was used in a two layer cross-validation to establish a model for the annual diffuse phosphorus (P) flow-weighted concentration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6073bba770d3b04aab5ccfb871fa14ce
https://doi.org/10.5194/egusphere-egu2020-18505
https://doi.org/10.5194/egusphere-egu2020-18505
Autor:
Marta M. Wiśniewska, Craig R. Walton, Ewa Jabłońska, Michael Trepel, Mateusz Grygoruk, Wiktor Kotowski, Søren Ejling Larsen, Dominik Zak, Carl Christian Hoffmann, Paweł Marcinkowski
Publikováno v:
Water
Volume 12
Issue 3
Water, Vol 12, Iss 3, p 629 (2020)
Jabłońska, E, Wiśniewska, M, Marcinkowski, P, Grygoruk, M, Walton, C R, Zak, D, Hoffmann, C C, Larsen, S E, Trepel, M & Kotowski, W 2020, ' Catchment-scale analysis reveals high cost-effectiveness of wetland buffer zones as a remedy to non-point nutrient pollution in north-eastern Poland ', Water (Switzerland), vol. 12, no. 3, 629 . https://doi.org/10.3390/w12030629
Volume 12
Issue 3
Water, Vol 12, Iss 3, p 629 (2020)
Jabłońska, E, Wiśniewska, M, Marcinkowski, P, Grygoruk, M, Walton, C R, Zak, D, Hoffmann, C C, Larsen, S E, Trepel, M & Kotowski, W 2020, ' Catchment-scale analysis reveals high cost-effectiveness of wetland buffer zones as a remedy to non-point nutrient pollution in north-eastern Poland ', Water (Switzerland), vol. 12, no. 3, 629 . https://doi.org/10.3390/w12030629
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