scholarly journals Variation in hydroclimate sustains tropical forest biomass and promotes functional diversity

2018 ◽  
Vol 219 (3) ◽  
pp. 932-946 ◽  
Author(s):  
Thomas L. Powell ◽  
Charles D. Koven ◽  
Daniel J. Johnson ◽  
Boris Faybishenko ◽  
Rosie A. Fisher ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Functional Diversity ◽  
Forest Biomass

scholarly journals Tropical-Forest Biomass Estimation at X-Band From the Spaceborne TanDEM-X Interferometer

2015 ◽  
Vol 12 (2) ◽  
pp. 239-243 ◽  
Author(s):  
Robert Treuhaft ◽  
Fabio Gonzalves ◽  
Joao Roberto dos Santos ◽  
Michael Keller ◽  
Michael Palace ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Biomass ◽  
Biomass Estimation ◽  
X Band

scholarly journals Effects of disturbance intensity on species and functional diversity in a tropical forest

2012 ◽  
Vol 100 (6) ◽  
pp. 1453-1463 ◽  
Author(s):  
Geovana Carreño-Rocabado ◽  
Marielos Peña-Claros ◽  
Frans Bongers ◽  
Alfredo Alarcón ◽  
Juan-Carlos Licona ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Functional Diversity ◽  
Disturbance Intensity

scholarly journals Predictions of Tropical Forest Biomass and Biomass Growth Based on Stand Height or Canopy Area Are Improved by Landsat-Scale Phenology across Puerto Rico and the U.S. Virgin Islands

2017 ◽  
Vol 9 (2) ◽  
pp. 123 ◽  
Author(s):  
David Gwenzi ◽  
Eileen Helmer ◽  
Xiaolin Zhu ◽  
Michael Lefsky ◽  
Humfredo Marcano-Vega
Keyword(s):  
Puerto Rico ◽  
Tropical Forest ◽  
Forest Biomass ◽  
Virgin Islands ◽  
Biomass Growth ◽  
Canopy Area ◽  
Stand Height ◽  
The U.S

scholarly journals Edge effects alter the role of fungi and insects in mediating functional composition and diversity of seedling recruits in a fragmented tropical forest

2020 ◽  
Vol 126 (7) ◽  
pp. 1181-1191
Author(s):  
Meghna Krishnadas ◽  
Kavya Agarwal ◽  
Liza S Comita
Keyword(s):  
Tropical Forest ◽  
Functional Diversity ◽  
Seed Size ◽  
Wood Density ◽  
Edge Effects ◽  
Seedling Recruitment ◽  
Light Availability ◽  
Canopy Openness ◽  
Dry Matter Content ◽  
Forest Fragments

Abstract Background and Aims In fragmented forests, proximity to forest edges can favour the establishment of resource-acquisitive species over more resource-conservative species. During seedling recruitment, resource-acquisitive species may benefit from either higher light availability or weaker top-down effects of natural enemies. The relative importance of light and enemies for recruitment has seldom been examined with respect to edge effects. Methods In a human-modified wet tropical forest in India, we first examined how functional traits indicative of resource-acquisitive vs. resource-conservative strategies, i.e. specific leaf area (SLA), leaf dry matter content, wood density and seed size, explained interspecific differences in densities of seedling recruits with distance to the forest edge. Then, we checked whether fungicide and insecticide treatments and canopy openness (proxy for light availability) explained edge effects on trait-mediated changes in seedling density. Finally, we examined whether light availability and natural enemy activity explained edge effects on functional diversity of seedling recruits. Key Results Up to 60 m from edges, recruit densities increased with decreasing seed size, but not at 90–100 m, where recruit densities increased with higher SLA. Trait-mediated variation in recruit densities changed with pesticides only at 90–100 m: compared with control plots, fungicide increased recruit densities for low SLA species and insecticide increased smaller seeded species. For SLA, wood density and seed size, functional diversity of recruits was higher at 90–100 m than at 0–5 m. At 90–100 m, fungicide decreased functional diversity for SLA and insecticide reduced seed size diversity compared with control plots. Canopy openness explained neither variation in recruit density in relation to traits nor functional diversity. Conclusions Altered biotic interactions can mediate local changes to trait composition and functional diversity during seedling recruitment in forest fragments, hinting at downstream effects on the structure and function of human-modified forests.

Releases of carbon to the atmosphere from degradation of forests in tropical Asia

1991 ◽  
Vol 21 (1) ◽  
pp. 132-142 ◽  
Author(s):  
R. A. Houghton
Keyword(s):  
Southeast Asia ◽  
Tropical Forest ◽  
Tropical Forests ◽  
Forest Biomass ◽  
Terrestrial Ecosystems ◽  
Tropical Asia ◽  
South And Southeast Asia ◽  
Net Flux ◽  
The Difference ◽  
Annual Flux

The net annual flux of carbon from south and southeast Asia as a result of changes in the area of forests was calculated for the period 1850 to 1985. The total net flux ranged from 14.4 to 24.0 Pg of carbon, depending on the estimates of biomass used in the calculations. High estimates of biomass, based on direct measurement of a few stands, and low estimates of biomass, based on volumes of merchantable wood surveyed over large areas, differ by a factor of almost 2. These and previous estimates of the release of carbon from terrestrial ecosystems to the atmosphere have been based on changes in the area of forests, or rates of deforestation. Recent studies have shown, however, that the loss of carbon from forests in tropical Asia is greater than would be expected on the basis of deforestation alone. This loss of carbon from within forests (degradation) also releases carbon to the atmosphere when the products removed from the forest burn or decay. Thus, degradation should be included in analyses of the net flux of carbon from terrestrial ecosystems. Degradation may also explain some of the difference between estimates of tropical forest biomass if the higher estimates are based on undisturbed forests and the lower estimates are more representative of the region. The implication of degradation for estimates of the release of carbon from terrestrial ecosystems is explored. When degradation was included in the analyses, the net flux of carbon between 1850 and 1985 was 30.2 Pg of carbon, about 25% above that calculated on the basis of deforestation alone (with high estimates of biomass), and about 110% above that calculated with low estimates of biomass. Thus, lower estimates of biomass for contemporary tropical forests do not necessarily result in lower estimates of flux.

Tropical forest biomass recovery using GeoSAR observations

2009 ◽  
Author(s):  
M L Williams ◽  
T Milne ◽  
I Tapley ◽  
J Jreis ◽  
M Sanford ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Biomass ◽  
Biomass Recovery

scholarly journals Erratum: Viet Nguyen, L., Tateishi, R., Kondoh, A., Sharma, R.C., Thanh Nguyen, H., Trong To, T. and Ho Tong Minh, D. (2016). Mapping Tropical Forest Biomass by Combining ALOS-2, Landsat 8, and Field Plots Data. Land, 5(4), 31.

Land ◽  
2017 ◽  
Vol 6 (3) ◽  
pp. 47
Author(s):  
Luong Viet Nguyen ◽  
Ryutaro Tateishi ◽  
Akihiko Kondoh ◽  
Ram Sharma ◽  
Hoan Thanh Nguyen ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Forest Biomass ◽  
Landsat 8 ◽  
Field Plots
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