The Phosphorus Economy of Mediterranean Oak Saplings Under Global Change.

ABSTRACT: While a severe decrease in phosphorus (P) availability is already taking place in a large number of ecosystems, drought and nitrogen (N) deposition will likely further decrease the availability of P under global change. Plants have developed physiological strategies to cope with decreasing P resources, but it is unclear how these strategies respond to elevated N deposition and summer droughts. We investigated the influence of N and P availability and soil drought on P uptake (H₃ ³³PO₄ feeding experiment) and use efficiencies in young Quercus calliprinos Webb. trees. We hypothesized that (H1) the expected increases in soil N:P ratios will increase the efficiencies of P uptake and use of oak saplings but will decrease the efficiencies of N uptake and u

SUBMITTER: Dirks I 

PROVIDER: S-EPMC6459984 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature