Author : Bernal, B. Megonigal, J. P. Mozdzer, T. J.
Year : 2017
Title : An invasive wetland grass primes deep soil carbon pools
Journal : Global Change Biology
Comment: To evaluate the effect of deep rooting on SOM decomposition they designed a mesocosm experiment that differentiates between plant-derived, surface SOM-derived (0–40 cm, active root zone of native marsh vegetation), and deep SOM-derived mineralization (40–80 cm, below active root zone of native vegetation).
In this mesocosm study, they demonstrated that the addition of novel plant traits to plant communities (e.g., deeply rooted invasive P. australis) can have a disproportionate effect on wetland soil C cycling and mineralization, particularly at depths where native vegetation has little to no live root biomass.
Title :Contrasting strategies for tree species to cope with heat and dry
conditions at urban sites
Journal : Urban Ecosyst
Comment: Measurements of leaf gas
exchange, leaf water potential, leaf surface temperature
and chlorophyll-fluorescence were used for identification
of specific response of Corylus corluna L., Ginkgo biloba L.,
Liriodendron tulipifera L., and Tilia cordata Mill.
The summer months in 2013 with a period of
heat and drought over eight weeks only interrupted by two
rainy days were appropriate to access tree’s strategies to cope
with low water availability.
During the measurement period,
the influence of high temperatures, high values of vapor pressure
deficit (VPD) and low soil water availability on stomatal
conductance, water-use efficiency (WUE) and leaf water potential
(Ψmin, Ψmax ) was highest for Liriodendron followed