Search results for "FOOD"

Transitions through the dynamics of adaptive cycles : Evolution of the Finnish agrifood system

2023

CONTEXT The escalating sustainability problems of the current agrifood regime call for a radical, systemic transformation. Such a transformation implies a move into a new stability domain, defined by a new set of systemic attractors. These transformations can be conceptualised as regime shifts. OBJECTIVE In this study, we explored the history of the Finnish agrifood system in order to learn from the past transformations of the system and to inform the current attempts to steer its development in a more sustainable direction. METHODS We conducted a qualitative analysis on literature discussing the history of the Finnish agrifood system by utilising the concept of the adaptive cycle, which ca…

To resistance mechanisms and beyond: an evolutionary approach of herbicide resistance

2014

The diversity of herbicide resistance mechanisms observed today in weed populations is the result of a very rapid evolution in response to the selection pressure exerted by herbicide applications. Herbicide resistance is a dynamic process: weed populations are undoubtedly still continuing to evolve, so that the long-term outcome of herbicide selection is currently unpredictable. The vast majority of the studies addressing herbicide resistance published to date are focussed on the identification of mechanisms endowing resistance, with the applied aim to develop resistance diagnosis methods. Understanding resistance evolution is key to set up proactive weed management strategies that should i…

Lake size and fish diversity determine resource use and trophic position of a top predator in high-latitude lakes

2015

Prey preference of top predators and energy flow across habitat boundaries are of fundamental importance for structure and function of aquatic and terrestrial ecosystems, as they may have strong effects on production, species diversity, and food-web stability. In lakes, littoral and pelagic food-web compartments are typically coupled and controlled by generalist fish top predators. However, the extent and determinants of such coupling remains a topical area of ecological research and is largely unknown in oligotrophic high-latitude lakes. We analyzed food-web structure and resource use by a generalist top predator, the Arctic charr Salvelinus alpinus (L.), in 17 oligotrophic subarctic lakes…

The sense of smell also ages

2013

WOS:000324010400056 ; http://www.biofutur.com/; National audience

Photoinduced lethal and sublethal toxicity of retene, a polycyclic aromatic hydrocarbon derived from resin acid, to coregonid larvae

2004

A comparative investigation on the acute phototoxicity of retene to vendace (Coregonus albula) and whitefish (C. lavaretus), both having pelagial larvae in spring, was conducted. To test the concept of early warning of sublethal biomarkers in relation to lethality to posthatch stages, we examined the effects of ultraviolet-B (UV-B) and retene on the levels of cytochrome P4501A (CYP1A) and heat shock protein 70 (HSP70) by exposing the animals to elevated levels of these factors for 48 and 72 h, respectively. Whereas UV-B and retene on their own were not lethal, simultaneous retene and UV-B exposure caused very high mortality to both species. The median lethal concentration (LC50; i.e., the c…

Validation of the use of a circulating biomarker of retinal omega-3 polyunsaturated fatty acids in supplementation conditions: the BLISAR project

2019

Intérêt des oméga 3 pour la rétine

2015

La rétine en recherche appliquée

2015

Lipides et rétine - Aspects biologiques

2014

Dietary fatty acids in the retina: beyond DHA, is EPA the underestimate intermediate?

2016

Dietary fatty acids in the retina: beyond DHA, is EPA the underestimate intermediate?. 12. congress of the international society for the study of fatty acids and lipids