Phosphorus and nitrogen allocation in Allium ursinum on an alluvial floodplain (Eastern France). Is there an effect of flooding history?

Abstract

The change in phosphorus and nitrogen content in a common geophyte spring species, Allium ursinum, is studied in alluvial forests in relation to three flooding histories related to river regulation: (1) annually flooded, (2) unflooded for 30 years, and (3) unflooded for 200 years. Flood suppression leads to a reduction of available P soil content as well as decreasing the biomass and the amount of phosphorus in plants, but has no significant effect on N plant content. Plant N:P ratio increases with the suppression of floods and is primarily driven by soil N:P ratios, in turn markedly linked to the total nitrogen in the soil. We highlighted a lower nutrient accumulation in leaves during plant growth in unflooded forests. Overall, our results suggest that P was the main limiting factor in unflooded forests while nitrogen was the main limiting factor in annually flooded forests. Flood suppression strongly affects the morphology and nutrient uptake by Allium ursinum and thus nutrient cycling in riverine forests.

Multi-scale analysis of environmental constraints on macrophyte distribution, floristic groups and plant diversity in the Lower Paraná River floodplain

“…These variables can be affected by sediment inputs occurring with intense floods (Trémolières et al, 2009;Willby et al, 2001) and can be a good correlate of vegetation distribution in several floodplain systems (Chacón-Moreno et al, 2004;Higgins et al, 1997;Marchetti and Aceñolaza, 2011;Thomaz and Bini, 2003). The high overlap of most species and of floristic group distribution along level 4 variables was compensated by the vegetation differences in broader scale levels.…”

Soil Humus, Iron, Sulphate and Magnesium Content Affect Nectar Traits of Wild Garlic (Allium ursinum L.)

“…The dependence of A. ursinum on nutrients is well known from literature, both in the case of habitats with abundant water supply [ 25 ], and habitats with no excess water [ 30 , 31 , 32 ]. These papers focus on the relationship between soil nutrients and the morphology or biomass of the whole plant (particularly the leaf and bulb), however, they do not discuss nectar properties.…”

“…Besides, a unifloral honey can be obtained from the nectar produced by the flowers. The chemical composition of the plant seems to be largely influenced by the ecological conditions of the habitat, as well as by the biological traits of the plant [ 23 , 24 , 25 ]. Since the development of reproductive organs and secretion of nectar have a significant metabolic cost for the plant [ 26 ], the production of nectar is likely to be highly sensitive to various ecological factors.…”

Phytochemical characterization and antioxidant potential of Allium ursinum L. cultivated on different soil types- a preliminary study

“…Li et al (2020) showed that the production of secondary metabolites is generally affected by environmental factors, particularly climate and soil factors. Research of Djurdjevic et al (2004), Trémolières et al (2009) and Sobolewska et al (2015), on wild A. ursinum showed that environmental factors (climate and soil), have a great impact on morphological, physiological, and chemical properties of the plant itself. Namely, research by Oguchi et al (2018) indicated that the conditions of the external environment in A. ursinum directly affect the anatomical features of the leaf.…”