Bracken-induced increase in soil P availability, along with its high P acquisition efficiency, enables it to invade P-deficient meadows

Antun Jelinčić (Author), Nina Šajna (Author), Željka Zgorelec (Author), Aleksandra Perčin (Author)

Abstract

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.

Keywords

Pteridium aquilinum;Holcus lanatus;sukcesija vegetacije;invazivne vrste;biogeokemijski procesi;ekologija tal;vegetation succession;invasive species;biogeochemical processes;soil ecology;plant invasion;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UM FNM - Faculty of Natural Sciences and Mathematics
Publisher:	Oxford University Press
UDC:	581
COBISS:	79002627
ISSN:	1752-9921
Views:	38
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	Pteridium aquilinum;Holcus lanatus;sukcesija vegetacije;invazivne vrste;biogeokemijski procesi;ekologija tal;
Type (COBISS):	Scientific work
Pages:	str. 783-794
Volume:	ǂVol. ǂ15
Issue:	ǂiss. ǂ4
Chronology:	2022
DOI:	10.1093/jpe/rtab114
ID:	24230159