20.500.12556/DKUM-89131 Bracken-induced increase in soil P availability, along with its high P acquisition efficiency, enables it to invade P-deficient meadows Changes in soil chemistry after invasion by bracken (Pteridium aquilinum) have been studied in heathlands, but comparable studies in meadows are lacking. We investigated if bracken invasion into P-deficient meadows alters the soil nutrient-resource pool, as well as the mechanisms behind it linked to soil processes and bracken nutrition. Furthermore, we investigated how community composition responds to differences in soil chemistry before and after the invasion. Soil and plant material sampling, along with vegetation survey, were performed during bracken peak biomass. Data analyses included analysis of variance and canonical correspondence analysis (CCA). Bracken invasion increased soil P availability, soil organic C concentration, as well as C:N, C:S and N:S ratios, while decreasing Fe and Co concentrations. Bracken pinnae were rich in P, and its rhizomes were rich in K, whereas N:P of pinnae and rhizomes was low. CCA showed contrasting abundance patterns of frequent meadow species related to P and K availability. Holcus lanatus exhibited competitive advantage under extremely low P availability. Increase in P availability under bracken may have occurred through promoting the leaching of Fe and Al. By increasing P availability for its growth and increasing N limitation for other species, bracken can gain a competitive advantage from the soil resource-niche perspective. Its ability to increase soil P availability, along with the physiological mechanisms behind its high P acquisition efficiency, seem to differentiate bracken from other species of competitive ecological strategy, which are mainly confined to nutrient-rich environments. This enabled bracken to invade P-deficient meadows. vegetation succession invasive species biogeochemical processes soil ecology plant invasion Pteridium aquilinum Holcus lanatus sukcesija vegetacije invazivne vrste biogeokemijski procesi ekologija tal true false true Oxford University Press Angleški jezik Slovenski jezik Znanstveno delo 2024-06-17 14:11:24 2024-06-17 14:22:16 2024-06-18 03:23:29 0000-00-00 00:00:00 2022 0 0 Str. 783-794 Št. 4 Letn. 15 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2021-05-25 2021-09-11 2021-09-27 581 79002627 10.1093/jpe/rtab114 1752-9921 Jelincic-2022-Bracken-induced_increase_in_soil.pdf Jelincic-2022-Bracken-induced_increase_in_soil.pdf 1 F0B818515FDE8176E9067676AB9C4A7F 596348cac17b429bc9ca87ea358677aebda414802160544af4423d1152669dfa f871e119-2ca3-11ef-be7d-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=180583 https://doi.org/10.1093/jpe/rtab114 0 0a2fb637-2ca4-11ef-be7d-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=180584 Fakulteta za naravoslovje in matematiko 0 0 0