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Umeå universitet
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Huvudmenyn dold.
Personalbild Jenny Ask

Jenny Ask

Jag forskar inom akvatisk ekologi och biogeokemi, med fokus på bentiska processer, i nordliga sjö- och kustekosystem.

Kontakt

E-post
jenny.ask@umu.se
Telefon
090-786 79 37

Verksam vid

Anknytning
Miljöanalytiker vid Umeå marina forskningscentrum (UMF)
Plats
Norrbyn 557, 905 71 HÖRNEFORS Umeå Marina Forskningscentrum, Norrbyn 557, 905 71 Hörnefors

Jag bedriver min forskning inom ämnesområdena akvatisk ekologi och biogeokemi. Jag fokuserar främst på de lägre trofinivåerna i akvatiska födovävar, d.v.s. alger och bakterier, men även hur de bidrar till högre trofinivåer i form av energitillförsel. Detta gör jag genom att undersöka hur biotiska och abiotiska faktorer påverkar metabolismen (produktion och respiration), biomassautvecklingen och artsammansättningen av alger och bakterier i olika typer av akvatiska ekosystem. Jag studerar även den strukturella skillnaden mellan bentiska och pelagiska habitat, och hur olika miljöfaktorer påverkar fördelningen av metaboliska processer mellan dessa habitat. Mer storskaligt är jag även intresserad av hur den terrestra miljön påverkar akvatiska ekosystem (t.ex. genom tillförsel av löst organiskt material), vilken roll akvatiska ekosystem har i den globala kolcykeln, samt vinterns betydelse (dvs processer under is).

Forskningsområden
Biogeokemi
Limnisk ekologi
Marin ekologi
Arctic CIRC

Contrasting impacts of warming and browning on periphyton
Limnology and Oceanography Letters, John Wiley & Sons 2023, Vol. 8, (4) : 628-638
Callisto Puts, Isolde; Ask, Jenny; Myrstener, Maria; et al.
Coastal darkening exacerbates eutrophication symptoms through bottom-up and top-down control modification
Limnology and Oceanography, John Wiley & Sons 2023, Vol. 68, (3) : 678-691
Garnier, Aurélie; Östman, Örjan; Ask, Jenny; et al.
Browning affects pelagic productivity in northern lakes by surface water warming and carbon fertilization
Global Change Biology, John Wiley & Sons 2023, Vol. 29, (2) : 375-390
Puts, Isolde C.; Ask, Jenny; Deininger, Anne; et al.
Carbon dioxide limitation of benthic primary production in a boreal lake
Freshwater Biology, John Wiley & Sons 2022, Vol. 67, (10) : 1752-1760
Hamdan, Mohammed; Karlsson, Jan; Byström, Pär; et al.
An ecological and methodological assessment of benthic gross primary production in northern lakes
Ecosphere, John Wiley & Sons 2022, Vol. 13, (3)
Puts, Isolde; Bergström, Ann-Kristin; Verheijen, Hendricus; et al.
Landscape determinants of pelagic and benthic primary production in northern lakes
Global Change Biology, John Wiley & Sons 2022, Vol. 28, (23) : 7063-7077
Puts, Isolde C.; Ask, Jenny; Siewert, Matthias B.; et al.
Allochthonous Organic Matter Supports Benthic but Not Pelagic Food Webs in Shallow Coastal Ecosystems
Ecosystems (New York. Print), Springer 2018, Vol. 21, (7) : 1459-1470
Bartels, Pia; Ask, Jenny; Andersson, Agneta; et al.
Global change-driven effects on dissolved organic matter composition: Implications for food webs of northern lakes
Global Change Biology, John Wiley & Sons 2018, Vol. 24, (8) : 3692-3714
Creed, Irena F.; Bergström, Ann-Kristin; Trick, Charles G.; et al.
Carbon dioxide stimulates lake primary production
Scientific Reports, Nature Publishing Group 2018, Vol. 8
Hamdan, Mohammed; Byström, Pär; Hotchkiss, Erin R.; et al.
Importance of coastal primary production in the northern Baltic Sea
Ambio, Vol. 45, (6) : 635-648
Ask, Jenny; Rowe, Owen; Brugel, Sonia; et al.
The influence of dissolved organic carbon on primary production in northern lakes
Limnology and Oceanography, John Wiley & Sons 2015, Vol. 60, (4) : 1276-1285
Seekell, David A.; Lapierre, Jean-Francois; Ask, Jenny; et al.
Response to Comment: Terrestrial support of pelagic consumers in unproductive lakes- Uncertainty and potential in assessments using stable isotopes
Limnology and Oceanography, Vol. 59, (5) : 1800-1803
Karlsson, Jan; Berggren, M.; Ask, Jenny; et al.
Benthic organic carbon release stimulates bacterioplankton production in a clear-water subarctic lake
Freshwater Science, Society for Freshwater Science 2013, Vol. 32, (1) : 176-182
Rodriguez, Patricia; Ask, Jenny; Hein, Catherine L.; et al.
Net ecosystem production in clear-water and brown-water lakes
Global Biogeochemical Cycles, Vol. 26 : GB1017-
Ask, Jenny; Karlsson, Jan; Jansson, Mats
Terrestrial organic matter support of lake food webs: Evidence from lake metabolism and stable hydrogen isotopes of consumers
Limnology and Oceanography, Vol. 57, (4) : 1042-1048
Karlsson, Jan; Berggren, Martin; Ask, Jenny; et al.
Carbon metabolism in clear-water and brown-water lakes
Umeå: Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences 2010
Ask, Jenny
Terrestrial organic matter and light penetration: Effects on bacterial and primary production in lakes
Limnology and Oceanography, American Society of Limnology and Oceanography, Inc. 2009, Vol. 54, (6) : 2034-2040
Ask, Jenny; Karlsson, Jan; Persson, Lennart; et al.
Whole-lake estimates of carbon flux through algae and bacteria in benthic and pelagic habitats of clear-water lakes
Ecology, Washington, DC, USA: Ecological Society of America 2009, Vol. 90, (7) : 1923-1932
Ask, Jenny; Karlsson, Jan; Persson, Lennart; et al.
Light limitation of nutrient-poor lake ecosystems
Nature, Vol. 460 : 506-509
Karlsson, Jan; Byström, Pär; Ask, Jenny; et al.
Viruses in subarctic lakes and their impact on benthic and pelagic bacteria
FEMS Microbiology Ecology, Vol. 70, (3) : 139-150
Säwström, Christin; Ask, Jenny; Karlsson, Jan
Winter respiration of allochthonous and autochthonous organic carbon in a subarctic clear-water lake
Limnology and Oceanography, American Society of Limnology and Oceanography 2008, Vol. 53, (3) : 948-954
Karlsson, Jan; Ask, Jenny; Jansson, Mats
Substitution of top predators: effects of pike invasion in a subarctic lake
Freshwater Biology, John Wiley & Sons, Inc 2007, Vol. 52, (7) : 1271–1280-
Byström, Pär; Karlsson, Jan; Nilsson, Per; et al.
Variation in hatching success and egg production of Eurytemora affinis (Calanoida, Copepoda). from the Gulf of Bothnia, Baltic Sea, in relation to abundance and clonal differences of diatoms
Journal of Plankton Research, Vol. 28, (7) : 683-694
Ask, Jenny; Reinikainen, Marko; Båmstedt, Ulf
Competition mediated coexistence of invading intermediate consumer, ninespine stickleback, and a resident omnivorous top predator, Arctic char
Ask, Per; Ask, Jenny; Byström, Pär; et al.
Temperature mediated effects on top consumer populations in subarctic lakes
Ask, Per; Ask, Jenny; Byström, Pär; et al.
Resource and consumer control of cross-habitat trophic interactions in shallow lakes
Diehl, Sebastian; Thomsson, Gustaf; Wickman, Jonas; et al.
Carbon dioxide limitation of benthic primary production in boreal lakes
Hamdan, Mohammed; Karlsson, Jan; Al-Haidarey, Mohammed J.; et al.
Global change indirectly increases pelagic productivity in northern lakes by accelerating surface water warming and by reducing CO2 limitation
Puts, Isolde C.; Ask, Jenny; Deininger, Anne; et al.
Contrasting impacts of warming and browning on periphyton
Puts, Isolde C.; Ask, Jenny; Myrstener, Maria; et al.
Visa publikationer i DiVA
Publicerad: 21 maj, 2024
Publicerad: 19 sep, 2022
Publicerad: 30 jun, 2022
Publicerad: 21 nov, 2019