scholarly journals Temperate and Tropical Forest Canopies are Already Functioning beyond Their Thermal Thresholds for Photosynthesis

Forests ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 47 ◽  
Author(s):  
Alida Mau ◽  
Sasha Reed ◽  
Tana Wood ◽  
Molly Cavaleri
Keyword(s):  
Tropical Forest ◽  
Forest Canopies ◽  
Thermal Thresholds

scholarly journals Leaf heat tolerance of 147 tropical forest species varies with elevation and leaf functional traits, but not with phylogeny

2020 ◽  
Author(s):  
Martijn Slot ◽  
Daniela Cala ◽  
Jorge Aranda ◽  
Aurelio Virgo ◽  
Sean Michaletz ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Heat Tolerance ◽  
Phylogenetic Signal ◽  
Interspecific Variation ◽  
Leaf Mass Per Area ◽  
Mean Annual Temperature ◽  
Forest Species ◽  
Irreversible Damage ◽  
Photosystem Ii Efficiency ◽  
Thermal Thresholds

Exceeding thermal thresholds causes irreversible damage and ultimately loss of leaves. The lowland tropics are among the warmest forested biomes, but little is known about heat tolerance of tropical forest species. We surveyed leaf heat tolerance of sun-exposed leaves from 147 tropical lowland and pre-montane forest species by determining the temperatures at which potential photosystem II efficiency based on chlorophyll a fluorescence started to decrease (T) and had decreased by 50% (T). T averaged 46.7°C (5–95 percentile: 43.5–49.7°C) and T averaged 49.9°C (47.8–52.5°C). Heat tolerance partially adjusted to site temperature; T and T decreased with elevation by 0.40°C and 0.26°C per 100m, respectively, while mean annual temperature decreased by 0.63°C per 100m. The phylogenetic signal in heat tolerance was weak, suggesting that heat tolerance is more strongly controlled by environment than by evolutionary legacies. T increased with the estimated thermal time constant of the leaves, indicating that species with thermally buffered leaves maintain higher heat tolerance. Among lowland species, T increased with leaf mass per area, so species with structurally more costly leaves reduce the risk of leaf loss during hot spells. These results provide insight in interspecific variation in heat tolerance at local and regional scales.

Plant physiological ecology of tropical forest canopies

1996 ◽  
Vol 11 (10) ◽  
pp. 408-412 ◽  
Author(s):  
Stephen S. Mulkey ◽  
Kaoru Kitajima ◽  
S.Joseph Wright
Keyword(s):  
Tropical Forest ◽  
Physiological Ecology ◽  
Forest Canopies ◽  
Plant Physiological Ecology

scholarly journals Estimating mammalian species richness and occupancy in tropical forest canopies with arboreal camera traps

2016 ◽  
Vol 3 (3) ◽  
pp. 146-157 ◽  
Author(s):  
Mark T. Bowler ◽  
Mathias W. Tobler ◽  
Bryan A. Endress ◽  
Michael P. Gilmore ◽  
Matthew J. Anderson
Keyword(s):  
Species Richness ◽  
Tropical Forest ◽  
Mammalian Species ◽  
Camera Traps ◽  
Forest Canopies

scholarly journals Assessing invertebrate herbivory in human‐modified tropical forest canopies

2021 ◽  
Author(s):  
Julia Rodrigues Barreto ◽  
Erika Berenguer ◽  
Joice Ferreira ◽  
Carlos A. Joly ◽  
Yadvinder Malhi ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Canopies ◽  
Invertebrate Herbivory

Winners and losers in the competition for space in tropical forest canopies

2014 ◽  
Vol 17 (5) ◽  
pp. 556-562 ◽  
Author(s):  
James R. Kellner ◽  
Gregory P. Asner
Keyword(s):  
Tropical Forest ◽  
Forest Canopies ◽  
Competition For Space

scholarly journals Tropical forest canopies and their relationships with climate and disturbance: results from a global dataset of consistent field-based measurements

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Marion Pfeifer ◽  
Alemu Gonsamo ◽  
William Woodgate ◽  
Luis Cayuela ◽  
Andrew R. Marshall ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Canopies ◽  
Consistent Field
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