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Life Sciences Commons

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Forest Sciences

Michigan Technological University

Michigan Tech Publications

2018

Tropical forests

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Compositional Response Of Amazon Forests To Climate Change, Adriane Esquivel-Muelbert, Timothy R. Baker, Kyle G. Dexter, Simon L. Lewis, Roel J.W. Brienen, Ted R. Feldpausch, Jhon Del Aguila-Pasquel, Et. Al. Nov 2018

Compositional Response Of Amazon Forests To Climate Change, Adriane Esquivel-Muelbert, Timothy R. Baker, Kyle G. Dexter, Simon L. Lewis, Roel J.W. Brienen, Ted R. Feldpausch, Jhon Del Aguila-Pasquel, Et. Al.

Michigan Tech Publications

Most of the planet's diversity is concentrated in the tropics, which includes many regions undergoing rapid climate change. Yet, while climate-induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether the floristic and functional composition of intact lowland Amazonian forests have been changing by evaluating records from 106 long-term inventory plots spanning 30 years. We analyse three traits that have been hypothesized to respond to different environmental drivers (increase in moisture stress and atmospheric CO 2 concentrations): maximum tree size, biogeographic water-deficit affiliation and wood density. Tree communities have …


Temperate And Tropical Forest Canopies Are Already Functioning Beyond Their Thermal Thresholds For Photosynthesis, Alida C. Mau, Sasha C. Reed, Tana E. Wood, Molly A. Cavaleri Jan 2018

Temperate And Tropical Forest Canopies Are Already Functioning Beyond Their Thermal Thresholds For Photosynthesis, Alida C. Mau, Sasha C. Reed, Tana E. Wood, Molly A. Cavaleri

Michigan Tech Publications

Tropical tree species have evolved under very narrow temperature ranges compared to temperate forest species. Studies suggest that tropical trees may be more vulnerable to continued warming compared to temperate species, as tropical trees have shown declines in growth and photosynthesis at elevated temperatures. However, regional and global vegetation models lack the data needed to accurately represent such physiological responses to increased temperatures, especially for tropical forests. To address this need, we compared instantaneous photosynthetic temperature responses of mature canopy foliage, leaf temperatures, and air temperatures across vertical canopy gradients in three forest types: tropical wet, tropical moist, and temperate …