Seasonal nutrient retranslocation in reforested Pinus halepensis Mill. stands in Southeast Spain

Heras, Jorge de las; Hernández-Tecles, Enrique; Moya, Daniel

doi:10.1007/s11056-016-9564-2

Cited by 10 publications

(1 citation statement)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At large spatial scales, plant nutrient concentrations (N, P, K) generally decrease with increasing mean annual temperature and decreasing mean annual rainfall (Reich & Oleksyn, 2004;Sardans et al, 2016). Patterns are less clear for other essential plant nutrients (e.g., Ca, Mg, S, Fe, Mn, or Zn), yet their dependence on environmental conditions could make them sensitive to temperature increases or rainfall reductions (de la Riva et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Simulated climate change decreases nutrient resorption from senescing leaves

Prieto

Querejeta

2019

Global Change Biology

View full text Add to dashboard Cite

Nutrient resorption is the process whereby plants recover nutrients from senescing leaves and reallocate them to storage structures or newer tissues. Elemental resorption of foliar N and P has been shown to respond to temperature and precipitation, but we know remarkably little about the influence of warming and drought on the resorption of these and other essential plant macro‐ and micronutrients, which could alter the ability of species to recycle their nutrients. We conducted a 5 year manipulative field study to simulate predicted climate change conditions and studied the effects of warming (W), rainfall reduction (RR), and their combination (W+RR) on nutrient resorption efficiency in five coexisting shrub species in a semiarid shrubland. Both mature and senesced leaves showed significant reductions in their nutrient contents and an altered stoichiometry in response to climate change conditions. Warming (W, W+RR) reduced mature leaf N, K, Ca, S, Fe, and Zn and senesced leaf N, Ca, Mg, S, Fe, and Zn contents relative to ambient temperature conditions. Warming increased mature leaf C/N ratios and decreased N/P and C/P ratios and increased senesced leaf C/N and C/P ratios. Furthermore, W and W+RR reduced nutrient resorption efficiencies for N (6.3%), K (19.8%), S (70.9%) and increased Ca and Fe accumulation in senesced leaves (440% and 35.7%, respectively) relative to the control treatment. Rainfall reduction decreased the resorption efficiencies of N (6.7%), S (51%), and Zn (46%). Reductions in nutrient resorption efficiencies with warming and/or rainfall reduction were rather uniform and consistent across species. The negative impacts of warming and rainfall reduction on foliar nutrient resorption efficiency will likely cause an impairment of plant nutrient budgets and fitness across coexisting native shrubs in this nutrient‐poor habitat, with probable implications for key ecosystem functions such as reductions in nutrient retention in vegetation, litter decomposition, and nutrient cycling rates.

show abstract

Section: Introductionmentioning

confidence: 99%