000136100 001__ 136100
000136100 005__ 20240711103551.0
000136100 0247_ $$2doi$$a10.1016/j.ppees.2024.125798
000136100 0248_ $$2sideral$$a139029
000136100 037__ $$aART-2024-139029
000136100 041__ $$aeng
000136100 100__ $$aDouce, Pauline
000136100 245__ $$aMultidimensional trait space outlines the effects of changes in abiotic filtering on aquatic plant community from sub-Antarctic ponds
000136100 260__ $$c2024
000136100 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136100 5203_ $$aIn the current context of climate changes, which causes strong habitat variation, an understanding of the mechanisms underlying plant community dynamics is crucial to predict species fates. The taking of inter- and intraspecific trait variability into account would aid the identification of these mechanisms. Recently, a method involving the calculation of hypervolumes (n-dimensional spaces of trait values) was developed for the study of plant responses to their environments. Through hypervolume comparison, we examined the effects of interannual variations in abiotic conditions on aquatic plant communities in ponds of the sub-Antarctic Iles Kerguelen. This model system is particularly relevant for the examination of the consequences of climate changes–related habitat variation, as aquatic plant communities are adapted to cold and overall stable habitat conditions and the sub-Antarctic climate is changing rapidly. We conducted field sampling over four years at three sites. For all aquatic species, we measured five foliar, shoot, and clonal traits characterizing individual growth strategies that are likely to respond to variations in abiotic conditions on 1565 ramets over the four years. We measured 10 abiotic variables to characterize the plants’ habitats every three months during the survey period. Hypervolumes were calculated for each site and year to assess variation in aquatic plant strategies at the community level. We demonstrated (i) the importance of spatiotemporal gradients of trophic status, temperature, and pH and dissolved oxygen concentration for the functional structure of aquatic plant communities; (ii) that the shape of the mean response was trait dependent, with traits related to plant metabolism (specific leaf area and specific internode mass) and three-dimensional space exploration (height and internode length) responding to the three spatiotemporal abiotic gradients; (iii) that selection pressures were especially high on aerial traits relative to clonal traits; and (iv) that given the community response to interannual variations of abiotic conditions, environmental changes should impact macrophyte community productivity. Synthesis. We conclude that the examination of interannual abiotic variation over four years is sufficient to detect rapid responses of macrophyte communities, with likely reliance on phenotypic plasticity. Our findings may inform the characterization of future functional changes in aquatic plant communities of the sub-Antarctic region, where similar species are found.
000136100 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000136100 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000136100 700__ $$aEymar-Dauphin, Pauline
000136100 700__ $$aSaiz, Hugo$$uUniversidad de Zaragoza
000136100 700__ $$aRenault, David
000136100 700__ $$aMermillod-Blondin, Florian
000136100 700__ $$aSimon, Laurent
000136100 700__ $$aVallier, Félix
000136100 700__ $$aBittebiere, Anne-Kristel
000136100 7102_ $$15011$$2220$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Ecología
000136100 773__ $$g64 (2024), 125798 [11 pp.]$$pPerspect. plant ecol. evol. syst.$$tPERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS$$x1433-8319
000136100 8564_ $$s2785184$$uhttps://zaguan.unizar.es/record/136100/files/texto_completo.pdf$$yVersión publicada
000136100 8564_ $$s2288188$$uhttps://zaguan.unizar.es/record/136100/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000136100 909CO $$ooai:zaguan.unizar.es:136100$$particulos$$pdriver
000136100 951__ $$a2024-07-11-08:38:19
000136100 980__ $$aARTICLE