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Selle kollektsiooni püsiv URIhttp://hdl.handle.net/10492/7302

Sirvi

Nüüd näidatakse 1 - 20 41

Nitrogen in Estonian lakes – the trends and impacts on Cyanobacteria : [presentation]
(Estonian University of Life Sciences, 2021) Nõges, Tiina; Maileht, Kairi
• The relative role of N&P to control eutrophication in lakes is continuously debated (Schindler et al. 2008). • Estonian limnologists have been P-believers as the post-socialist sharp reduction of N loading brought back cyanobacterial blooms in Lake Peipsi (Nõges et al. 2005) • The long debate has not discredited the importance of P-Control, but displayed evidence on the significance of N reduction to recover lake ecosystems (Paerl et al. 2016) • Chemically reduced N forms, such as NH4 + and urea favour non-N-fixing cyanobacteria (McCarthy et al. 2009)
A Future Tale of Two Winters? Sediment-water interface nitrogen dynamics in Lake Võrtsjärv (Estonia) during the ice-free winter 2019/2020 : [presentation]
(Estonian University of Life Sciences, 2021) McCarthy, Mark J.; Newell, Silvia; Tuvikene, Lea; Sepp, Margot; Tamm, Marju; Zingel, Priit; Feldmann, Tõnu; Olli, Kalle; Nõges, Tiina
The presentation took place at the Lahti Lakes 2021 Symposium.
Larval and juvenile perch feeding in some Estonian and Latvian study lakes : [poster]
(Estonian University of Life Sciences, 2021) Karus, Katrit; Agasild, Helen; Feldmann, Tõnu; Tuvikene, Arvo; Medne-Peipere, Madara; Žagars, Matiss; Puncule, Linda; Zingel, Priit
The presentation took place at the Lahti Lakes 2021 Symposium.
Three years into studying N cycling in lakes Peipsi and Võrtsjärv - where we stand, and what’s next : [presentation]
(Estonian University of Life Sciences, 2021) McCarthy, Mark J.
Objectives: 1. Characterize and quantify water column nitrogen (N) cycling rates in lakes Peipsi and Võrtsjärv a. Ammonium (NH 4 ++) uptake and regeneration b. Nitrification 2. Characterize and quantify sediment water interface N transformations and O 2 demand in Lake Võrtsjärv a. Net nutrient (NO x , NH 4 ++, urea, ortho P), O 2 , and N 2 fluxes b. Potential denitrification and DNRA c. Possible anammox d. N 2 fixation (heterotrophic)
Cross border cooperation on environmental monitoring of Lake Peipsi: main results and perspectives : [presentation]
(Estonian University of Life Sciences, 2021) Tuvikene, Lea; Tammeorg, Olga; Nõges, Peeter; Nõges, Tiina
The presentation took place at the Lahti Lakes 2021 Symposium.
Lake food webs and C metabolism across gradients of catchment alkalinity and climate : [presentation]
(Estonian University of Life Sciences, 2021) Nõges, Tiina; Agasild, Helen; Cremona, Fabien; Laas, Alo; Nõges, Peeter; Tõnno, Ilmar; Zingel, Priit
The presentation took place at the 10th International Conference on Shallow Lakes in 2021.
Black and white, day and night – fish diurnal movements in two different Amazonian lakes : [presentation]
(2021) Zingel, Priit; Tuvikene, Arvo; Feldmann, Tõnu; Agasild, Helen
The presentation took place at the 10th International Conference on Shallow Lakes in 2021.
Catchment land cover and soil as predictors of organic carbon, nitrogen, and phosphorus levels in temperate lakes : [presentation]
(Estonian University of Life Sciences, 2021) Sepp, Margot; Kõiv, Toomas; Nõges, Peeter; Nõges, Tiina; Newell, Silvia; McCarthy, Mark J.
The presentation took place at the 10th International Conference on Shallow Lakes in 2021.
Lake food webs and carbon metabolism : [presentation]
(Estonian University of Life Sciences, 2021) Nõges, Tiina
The presentation took place at the 18th World Lake Conference.
Comparison of larval perch feeding between littoral and open-water sites of the lakes : [presentation]
(Estonian University of Life Sciences, 2021) Karus, Katrit; Žagars, Matiss; Zingel, Priit; Agasild, Helen; Feldmann, Tõnu; Tuvikene, Arvo; Medne-Peipere, Madara; Puncule, Linda
The presentation took place at the 10th International Conference on Shallow Lakes in 2021.
The immediate response of freshwater phytoplankton to increased nitrogen loading differ among climate warming scenarios - a mesocosms experiments : [presenation]
(2021) Tamm, Marju; Boedecker, Ashlynn; Freiberg, René; Jeppesen, Erik
The presentation took place at the 10th International Conference on Shallow Lakes in 2021.
Sediment nitrogen transformations during an ice-free winter in a large, shallow, eutrophic lake : [presentation]
(Estonian University of Life Sciences, 2022) McCarthy, Mark J.
Objectives: 1. Characterize and quantify water column nitrogen (N) cycling rates in lakes Peipsi and Võrtsjärv (Estonia) a. Ammonium (NH4+) uptake and regeneration b. Nitrification 2. Characterize and quantify sediment–water interface N transformations and O2 demand in Lake Võrtsjärv a. Net nutrient (NOx, NH4+, urea, ortho–P), O2, and N2 fluxes b. Potential denitrification and DNRA c. Possible anammox d. N2 fixation (heterotrophic)
What is the use of lake science in the management and maintenance of lakes? : [presentation]
(Estonian University of Life Sciences, 2022) Tuvikene, Lea
EU Horizon 2020 Project „Towards Research Excellence and Innovation Capacity in Studying Lake Ecosystems’ Functional Structures and Climate Change Impact“ – TREICLAKE – aims to increase the scientific expertise of Estonian lake researchers to achieve larger impact not only in science but also in society at large.
Internal nitrogen loading in eutrophic lakes : moving beyond nutrient concentration measurements and Liebig’s Law : [presentation]
(Estonian University of Life Sciences, 2022) McCarthy, Mark J.
The paradigm: Freshwater systems are phosphorus limited because nitrogen deficiencies are corrected by nitrogen fixation.
Effects of multiple stressors on nitrate and cyanobacteria in a large shallow lake : [presentation]
(Estonian University of Life Sciences, 2022) Cremona, Fabien; Öglü, Burak; McCarthy, Mark J.; Newell, Silvia E.; Nõges, Peeter; Nõges, Tiina
Presentation at the 36th Congress of the International Society of Limnology, 7-10 August 2022, Berlin.
Predicting multiple stressor effect on zooplankton abundance, biomass and community composition in two large eutrophic lakes : [presentation]
(Estonian University of Life Sciences, 2022) Cremona, Fabien; Agasild, Helen; Blank, Kätlin; Haberman, Juta; Zingel, Priit; Nõges, Peeter; Nõges, Tiina; Laas, Alo
Presentation at the BIOGEOMON 2022, 10th International Symposium on Ecosystem Behavior, June 26–30, 2022, Tartu, Estonia.
Võrtsjärv on võrratu! : [esitlus]
(Eesti Maaülikool, 2022) Tuvikene, Lea
Neljas üle-Eestiline avatud kalasadamate päev Limnoloogias, 2022.
The role of trophic niche in eel head dimorphism : [presentation]
(Estonian University of Life Sciences, 2022) Teesalu, Paul
The presentation took place at the 12th ISOECOL, June 2022 in Gaming, Austria.
Towards Research Excellence and Innovation Capacity in Studing Lake Ecosystems Functional Structures and Climate Change Impact – TREICLAKE : [presentation]
(Estonian University of Life Sciences, 2022) Estonian University of Life Sciences
Objectives: to improve/icrease in EMU Chair of hydrobiology and fisheries 1. Scientific Expertise 2. Scientific Infrastructure (mesocosm facility) 3. Impact in the Scientific Community 4. Management and administration skills 5. Impact in Wider Society
Lipid-normalizing δ²H values from aquatic organisms : [presentation]
(University of Jyväskylä, 2022) Kiljunen, M.; Schilder, J.; Hämäläinen, H.; Jones, R.I.
As lipids are isotopically lighter than other tissues, routing of lipids directly from dietary items is expected to have a significant impact on bulk tissue-diet hydrogen isotope relations, as is well established for carbon.

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