T
Tobias Vrede
Researcher at Swedish University of Agricultural Sciences
Publications - 48
Citations - 2205
Tobias Vrede is an academic researcher from Swedish University of Agricultural Sciences. The author has contributed to research in topics: Zooplankton & Phytoplankton. The author has an hindex of 22, co-authored 47 publications receiving 1934 citations. Previous affiliations of Tobias Vrede include Umeå University & University of Agricultural Sciences, Dharwad.
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Fundamental connections among organism c:n:p stoichiometry, macromolecular composition, and growth
TL;DR: It is acknowledged that the C:N:P stoichiometry of consumers and their resources affects both the structure and the function of food webs, and eventually influences broad-scale processes su ...
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Global change-driven effects on dissolved organic matter composition : Implications for food webs of northern lakes
Irena F. Creed,Ann-Kristin Bergström,Charles G. Trick,Nancy B. Grimm,Dag O. Hessen,Jan Karlsson,Karen A. Kidd,Emma S. Kritzberg,Diane M. McKnight,Erika C. Freeman,Oscar E. Senar,Agneta Andersson,Jenny Ask,Martin Berggren,Mehdi Cherif,Reiner Giesler,Erin R. Hotchkiss,Pirkko Kortelainen,Monica M. Palta,Tobias Vrede,Gesa A. Weyhenmeyer +20 more
TL;DR: It is concluded that global change in northern regions leads not only to reduced primary productivity but also to nutritionally poorer lake food webs, with discernible consequences for the trophic web to fish and humans.
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Polyunsaturated fatty acids in zooplankton: variation due to taxonomy and trophic position
Jonas Persson,Tobias Vrede +1 more
TL;DR: The results predict that the strength and nature of food quantity and quality limitation of Daphnia growth varies with lake trophic state, and that some combination ofFood quantity and/or quality limitation should be expected in nearly all lakes.
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The influence of food quality (P : C ratio) on RNA : DNA ratio and somatic growth rate of Daphnia
TL;DR: The response in RNA : DNA ratio to changes in food quality is rapid and consistent with previously reported patterns for somatic growth rate, and enables shortterm experiments that reduces the problems with keeping both food quantity and quality constant during incubation.
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Food quantity and quality regulation of trophic transfer between primary producers and a keystone grazer (Daphnia) in pelagic freshwater food webs
TL;DR: The transfer of energy and nutrients from plants to animals is a key process in all ecosystems and in lakes, inefficient transfer of primary producer derived energy can result in low animal growth rat growth.