Are large-scale differences in temperature and reindeer management regime affecting the quality of reindeer's summer forage?

Are large-scale differences in temperature and reindeer management regime affecting the quality of reindeer's summer forage? | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 11 March 2025 V1 Latest version Share on Are large-scale differences in temperature and reindeer management regime affecting the quality of reindeer's summer forage? Authors : Fanny Berthelot 0000-0002-8646-5081 [email protected] , Audun Stien , Eeva Soininen 0000-0003-4280-8350 , Torkild Tveraa , Hanna Böhner , and Kari Anne Bråthen 0000-0003-0942-1074 Authors Info & Affiliations https://doi.org/10.22541/au.174168021.16445853/v1 Published Ecology and Evolution Version of record Peer review timeline 260 views 192 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The chemical balance between essential nutrients and defense compounds in plants determines the quality of the forage available to herbivores and can be modified by both environmental conditions and herbivores themselves. We investigated whether climate and herbivory affect nutrient and defense compound concentrations across plant functional groups. Concentrations of nutrients - nitrogen (N) and phosphorus (P) - and defense compounds - silicon (Si) and phenolics (Ph) - were measured in plant samples from the locally most abundant species, collected in northern Norway across a gradient in summer temperature and different reindeer grazing regimes. Nutrient and defense compound concentrations varied substantially across species and plant functional groups. In addition, nutrients (N, P) declined over the summer, while defense compounds (Si, Ph) accumulated. Sites with a warmer climate had a stronger decrease in nutrient concentrations over the season. We found no evidence that long-term contrasts in reindeer herbivory intensity affected the average nutritional quality within plant species. Overall, our results suggest that spatial variation in the nutritional quality in Arctic tundra vegetation is mainly determined by the species composition and by consistent changes over the summer season. In comparison, reindeer herbivory and local climate seem to have relatively little impact on the average nutrient and defense compound concentrations of the plant species, suggesting they mainly alter forage quality through effects on functional and taxonomic composition of the vegetation. Supplementary Material File (oik-11493-file002.pdf) Download 1.17 MB Information & Authors Information Version history V1 Version 1 11 March 2025 Peer review timeline Published Ecology and Evolution Version of Record 15 Nov 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords defense compounds forage quality near infrared spectroscopy nutrients plant chemical composition reindeer herbivory Authors Affiliations Fanny Berthelot 0000-0002-8646-5081 [email protected] UiT The Arctic University of Norway View all articles by this author Audun Stien UiT The Arctic University of Norway View all articles by this author Eeva Soininen 0000-0003-4280-8350 UiT Norges arktiske universitet View all articles by this author Torkild Tveraa Norsk Institutt for Naturforskning View all articles by this author Hanna Böhner UiT The Arctic University of Norway View all articles by this author Kari Anne Bråthen 0000-0003-0942-1074 UiT The Arctic University of Norway View all articles by this author Metrics & Citations Metrics Article Usage 260 views 192 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Fanny Berthelot, Audun Stien, Eeva Soininen, et al. Are large-scale differences in temperature and reindeer management regime affecting the quality of reindeer's summer forage?. Authorea . 11 March 2025. DOI: https://doi.org/10.22541/au.174168021.16445853/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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