Physiology and acclimation potential are tuned with phenology in larvae of a prolonged breeder amphibian

Oikos ◽  
2021 ◽  
Author(s):  
Urtzi Enriquez‐Urzelai ◽  
Alfredo G. Nicieza ◽  
Albert Montori ◽  
Gustavo A. Llorente ◽  
Miren Bego Urrutia
Keyword(s):  
Acclimation Potential

High acclimation potential in floating Macrocystis pyrifera to abiotic conditions even under grazing pressure - a field study

2018 ◽  
Vol 54 (3) ◽  
pp. 368-379 ◽  
Author(s):  
Eva Rothäusler ◽  
Hannes Reinwald ◽  
Boris A. López ◽  
Fadia Tala ◽  
Martin Thiel
Keyword(s):  
Field Study ◽  
Grazing Pressure ◽  
Macrocystis Pyrifera ◽  
Abiotic Conditions ◽  
Acclimation Potential

Acclimation to a Change in Light Regime in Seedlings of Six Australian Rainforest Tree Species

1991 ◽  
Vol 39 (6) ◽  
pp. 591 ◽  
Author(s):  
OO Osunkoya ◽  
JE Ash
Keyword(s):  
Light Availability ◽  
Area Ratio ◽  
Light Regime ◽  
Light Environment ◽  
Specific Leaf Weight ◽  
Relative Growth ◽  
Light Regimes ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Acclimation Potential

Acclimation potential of seedlings of six non-pioneer, North Queensland rainforest tree species (Diploglottis diphyllostegia, Flindersia brayleyana, Dysoxylum schgneri, Prunus turnerana, Neisosperma poweri and Castanospora alphandii) were evaluated in three different light regimes. The seedlings were grown from seeds and raised in 37, 10 and 2.5% photosynthetically active radiation (PAR) of full sunlight in a shade house. Plants were harvested at 1, 4, and 15 months after germination. At 4 months, for each species, one-third of the seedlings in each light environment were transferred to each of the two other light environments. The remaining one-third stayed in the same light environment and formed the control. The control seedlings of all species showed a marked response to increasing PAR: relative growth rate (RGR) and total biomass were low in the 2.5% PAR level, increased in the 10% PAR level and were maximal in the 37% PAR level, except for Neisosperma. The seedlings in the 25% PAR level showed a typical shade plant morphology with a high leaf area ratio, low root-shoot ratio and low specific leaf weight. For seedlings of Dysoxylum and Prunus, a change in light regime from 37% PAR to 2.5% PAR resulted in negative relative growth rates. Eleven months after transfer, many growth characteristics still showed significant initial × final light environment interactions, an indication of incomplete adjustment. Acclimation to increasing light availability was faster than acclimation to decreasing light availability. On the basis of biomass allocation patterns (root-shoot ratio, leaf area ratio and specific leaf weight), the six species could not be differentiated under the three light regimes and their dynamics. However, using RGR as a relative measure of carbon economy, it was possible to differentiate the species in their acclimation ability to decreased but not to increased irradiance. It was concluded that, for non-pioneer species, acclimation potential may be more related to physiological than to morphological plasticity.

scholarly journals Acclimation of seedlings of three Mexican tropical rain forest tree species to a change in light availability

1991 ◽  
Vol 7 (1) ◽  
pp. 85-97 ◽  
Author(s):  
J. Popma ◽  
F. Bongers
Keyword(s):  
Growth Rates ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Light Availability ◽  
Forest Tree ◽  
Gap Dynamics ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Closed Canopy ◽  
Acclimation Potential

ABSTRACTA comparison is made of the light acclimation potential of seedlings of three canopy species of the tropical rain forest of Los Tuxtlas, Mexico: Cordia megalantha, Lonchocarpus guatemalensis, and Omphalea oleifera. These species showed similar growth rates in a range of microhabitats. Gap dynamics were simulated by transferring plants between three environments: beneath a closed canopy, a small gap, and a large gap. Plants of all three species were able to adjust their morphology and growth rates in response to changes in light availability. Growth rates increased when plants were moved to a (larger) gap, and decreased when plants were moved to a more shaded environment. Shade-grown plants were able to acclimate faster to increasing light availability than sun-grown plants to decreasing light availability. Also, plants moved from shady to sunny conditions showed higher relative growth rates than sun control plants, whereas sun-grown plants when moved to the shade showed lower relative growth rates than shade control plants. Species differed in their response to gap dynamics. Omphalea could not acclimate morphologically to shading, but reacted faster than the other species in response to the occurrence of a large gap. Acclimation potential seemed to be related to plasticity in physiological rather than in morphological traits. Suppressed seedlings of all three species performed well in the shade, and were able to acclimate rapidly to gap-conditions.

scholarly journals Higher Thermal Acclimation Potential of Respiration but Not Photosynthesis in Two Alpine Picea Taxa in Contrast to Two Lowland Congeners

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0123248 ◽  
Author(s):  
Xiao Wei Zhang ◽  
Jing Ru Wang ◽  
Ming Fei Ji ◽  
Richard Ian Milne ◽  
Ming Hao Wang ◽  
...  
Keyword(s):  
Thermal Acclimation ◽  
Acclimation Potential

Stress due to low nitrate availability reduces the biochemical acclimation potential of the giant kelp Macrocystis pyrifera to high temperature

2020 ◽  
Vol 47 ◽  
pp. 101895
Author(s):  
Matthias Schmid ◽  
Pamela A. Fernández ◽  
Juan Diego Gaitán-Espitia ◽  
Patti Virtue ◽  
Pablo P. Leal ◽  
...  
Keyword(s):  
High Temperature ◽  
Macrocystis Pyrifera ◽  
Giant Kelp ◽  
Nitrate Availability ◽  
Acclimation Potential
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