Search Results - "Jensen, Jens Peder"

Trophic structure, species richness and biodiversity in Danish lakes: changes along a phosphorus gradient by Jeppesen, Erik, Peder Jensen, Jens, SØndergaard, Martin, Lauridsen, Torben, Landkildehus, Frank

“…1. Using data from 71, mainly shallow (an average mean depth of 3 m), Danish lakes with contrasting total phosphorus concentrations (summer mean 0.02–1.0 mg P…”
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Role of sediment and internal loading of phosphorus in shallow lakes by Sondergaard, M, Jensen, J P, Jeppesen, E

“…Issue Title: Shallow Lakes 2002 The sediment plays an important role in the overall nutrient dynamics of shallow lakes. In lakes where the external loading has…”
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Shallow lake restoration by nutrient loading reduction--some recent findings and challenges ahead by Jeppesen, Erik, Søndergaard, Martin, Meerhoff, Mariana, Lauridsen, Torben L, Jensen, Jens Peder

“…Shallow lakes respond to nutrient loading reductions. Major findings in a recent multi-lake comparison of data from lakes with long time series revealed: that…”
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Water Framework Directive: ecological classification of Danish lakes by Sondergaard, M, Jeppesen, E, Jensen, J.P, Amsinck, S.L

“…1. The European Water Framework Directive (WFD) requires that all European water-bodies are assigned to one of five ecological classes, based primarily on…”
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The Impact of Nutrient State and Lake Depth on Top-Down Control in the Pelagic Zone of Lakes: A Study of 466 Lakes from the Temperate Zone to the Arctic by Jeppesen, Erik, Jensen, Jens Peder, Jensen, Claus, Faafeng, Bjørn, Hessen, Dag O., Søndergaard, Martin, Lauridsen, Torben, Brettum, Pål, Christoffersen, Kirsten

“…Using empirical data from 466 temperate to arctic lakes covering a total phosphorus (TP) gradient of$2-1036\ \mu {\rm g}\ {\rm L}^{-1}$, we describe how the…”
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Seasonal response of nutrients to reduced phosphorus loading in 12 Danish lakes by SØNDERGAARD, MARTIN, JENSEN, JENS PEDER, JEPPESEN, ERIK

“…Summary 1. Concentrations of phosphorus, nitrogen and silica and alkalinity were monitored in eight shallow and four deep Danish lakes for 13 years following a…”
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Retention and internal loading of phosphorus in shallow, eutrophic lakes by Sondergaard, M, Jensen, P J, Jeppesen, E

“…This paper gives a general overview of the nature and important mechanisms behind internal loading of phosphorus (P), which is a phenomenon appearing…”
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Functional ecology and palaeolimnology: using cladoceran remains to reconstruct anthropogenic impact by Jeppesen, Erik, Leavitt, Peter, De Meester, Luc, Jensen, Jens Peder

“…The field of lake palaeoecology has undergone significant changes. Powerful quantitative techniques have been developed to investigate anthropogenic impacts on…”
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Internal phosphorus loading in shallow Danish lakes by Søndergaard, Martin, Jensen, Jens Peder, Jeppesen, Erik

“…High phosphorus concentrations due to internal loading from the sediment with a strongly negative impact on lake water quality, is often seen in shallow lakes…”
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The determination of ecological status in shallow lakes - a tested system (ECOFRAME) for implementation of the European Water Framework Directive by Moss, Brian, Stephen, Deborah, Alvarez, Cristina, Becares, Eloy, Bund, Wouter Van De, Collings, S.E., Donk, Ellen Van, Eyto, Elvira De, Feldmann, Tõnnu, Fernández-Aláez, Camino, Fernández-Aláez, Margarita, Franken, Rob J.M., García-Criado, Francisco, Gross, Elisabeth M., Gyllström, Mikael, Hansson, Lars-Anders, Irvine, Kenneth, Järvalt, Ain, Jensen, Jens-Peder, Jeppesen, Erik, Kairesalo, Timo, Kornijów, Ryszard, Krause, Teet, Künnap, Helen, Laas, Alo, Lill, Evi, Lorens, Bogdan, Luup, Helen, Rosa Miracle, Maria, Nõges, Peeter, Nõges, Tiina, Nykänen, Mirva, Ott, Ingmar, Peczula, Wojciech, Peeters, Edwin T.H.M., Phillips, Geoff, Romo, Susanna, Russell, Victoria, Salujõe, Jaana, Scheffer, Marten, Siewertsen, Klaus, Smal, Halina, Tesch, Claudia, Timm, Henn, Tuvikene, Lea, Tonno, Ilmar, Virro, Taavi, Vicente, Eduardo, Wilson, David

“…1. The European Water Framework Directive requires the determination of ecological status in European fresh and saline waters. This is to be through the…”
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Top-down control in freshwater lakes: the role of nutrient state, submerged macrophytes and water depth by Jeppesen, Erik, Jensen, Jens Peder, Søndergaard, Martin, Lauridsen, Torben, Pedersen, Leif Junge, Jensen, Lars

“…Based on data from 233 Danish lakes, enclosure experiments, full-scaleexperiments and published empirical models we present evidence that top-downcontrol is…”
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Response of submerged macrophytes in Danish lakes to nutrient loading reductions and biomanipulation by Lauridsen, Torben L., Peder Jensen, Jens, Jeppesen, Erik, Søndergaard, Martin

“…Issue Title: Shallow Lakes 2002 During the last two decades the nutrient loading to Danish lakes has been reduced with the aim to improve water quality…”
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Impact of fish predation on cladoceran body weight distribution and zooplankton grazing in lakes during winter by Jeppesen, Erik, Jensen, Jens Peder, Søndergaard, Martin, Fenger-Grøn, Morten, Bramm, Mette E., Sandby, Kjeld, Møller, Poul Hald, Rasmussen, Helle Utoft

“…Summary 1. It is well accepted that fish, if abundant, can have a major impact on the zooplankton community structure during summer, which, particularly in…”
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Sub-fossils of cladocerans in the surface sediment of 135 lakes as proxies for community structure of zooplankton, fish abundance and lake temperature by JEPPESEN, Erik, JENSEN, Jens Peder, LAURIDSEN, Torben L, AMSINCK, Susanne L, CHRISTOFFERSEN, Kirsten, SØNDERGAARD, Martin, MITCHELL, Stuart F

“…Issue Title: Recent Developments in Fundamental and Applied Plankton Research To elucidate the possibilities of using zooplankton remains in the surface…”
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Response of phytoplankton, zooplankton, and fish to re-oligotrophication: An 11 year study of 23 Danish lakes by Jeppesen, Erik, Jensen, Jens Peder, Søndergaard, Martin

“…The response of the biological community to total phosphorus loading reductions was studied by sampling fortnightly during the summer for 11 years in 18 lakes…”
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Reconstructing the historical changes in Daphnia mean size and planktivorous fish abundance in lakes from the size of Daphnia ephippia in the sediment by Jeppesen, Erik, Jensen, Jens Peder, Amsinck, Susanne, Landkildehus, Frank, Lauridsen, Torben, Mitchell, Stuart F

“…The zooplankton community structure in lakes is highly influenced by size-selective predation by fish, with small zooplankton species dominating at high…”
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Does Resuspension Prevent a Shift to a Clear State in Shallow Lakes during Reoligotrophication? by Jeppesen, Erik, Jensen, Jens Peder, Søndergaard, Martin, Hansen, Kjeld Sandby, Møller, Poul Hald, Rasmussen, Helle Utoft, Norby, Vibeke, Larsen, Søren E.

“…Water managers often debate whether resuspension of sediment with high organic matter and water content accumulated during eutrophication delays improvement of…”
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Seasonal dynamics in the concentrations and retention of phosphorus in shallow Danish lakes after reduced loading by Søndergaard, Martin, Jensen, Jens Peder, Jeppesen, Erik, Møller, Poul Hald

“…To investigate how phosphorus concentrations and retention were affected during recovery after reduced external phosphorus loading, phosphorus concentrations…”
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Lake responses to reduced nutrient loading - an analysis of contemporary long-term data from 35 case studies by JEPPESEN, ERIK, SØNDERGAARD, MARTIN, JENSEN, JENS PEDER, HAVENS, KARL E., ANNEVILLE, ORLANE, CARVALHO, LAURENCE, COVENEY, MICHAEL F., DENEKE, RAINER, DOKULIL, MARTIN T., FOY, BOB, GERDEAUX, DANIEL, HAMPTON, STEPHANIE E., HILT, SABINE, KANGUR, KÜLLI, KÖHLER, JAN, LAMMENS, EDDY H.H.R., LAURIDSEN, TORBEN L., MANCA, MARINA, MIRACLE, MARÍA R., MOSS, BRIAN, NÕGES, PEETER, PERSSON, GUNNAR, PHILLIPS, GEOFF, PORTIELJE, ROB, ROMO, SUSANA, SCHELSKE, CLAIRE L., STRAILE, DIETMAR, TATRAI, ISTVAN, WILLÉN, EVA, WINDER, MONIKA

“…Summary 1. This synthesis examines 35 long‐term (5–35 years, mean: 16 years) lake re‐oligotrophication studies. It covers lakes ranging from shallow (mean…”
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Fish-induced changes in zooplankton grazing on phytoplankton and bacterioplankton: a long-term study in shallow hypertrophic Lake Søbygaard by Jeppesen, Erik, Søndergaard, Martin, Jensen, Jens Peder, Mortensen, Erik, Sortkjær, Ole

“…The impact of fish-mediated changes on the structure and grazing of zooplankton on phytoplankton and bacterioplankton was studied in Lake Søbygaard during the…”
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