Mapping land use of tropical regions from space

Souza, Carlos M.

doi:10.1073/pnas.0606804103

Cited by 12 publications

(7 citation statements)

References 22 publications

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“…3 Further note that the satellitebased deforestation monitoring used here does not detect selective logging and surface fires in standing forests, which have a significant forest degrading effect (Nepstad et al, 1999;Cochrane and Laurance, 2008). Souza et al (2013) estimated that the area of degraded forest is equivalent to 30 % of the area deforested at the same time. The map in Fig.…”

Section: Deforestation and Agro-industrial Expansionmentioning

confidence: 98%

Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory

et al. 2019

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Abstract. The Amazon rain forest experiences the combined pressures from human-made deforestation and progressing climate change, causing severe and potentially disruptive perturbations of the ecosystem's integrity and stability. To intensify research on critical aspects of Amazonian biosphere–atmosphere exchange, the Amazon Tall Tower Observatory (ATTO) has been established in the central Amazon Basin. Here we present a multi-year analysis of backward trajectories to derive an effective footprint region of the observatory, which spans large parts of the particularly vulnerable eastern basin. Further, we characterize geospatial properties of the footprint regions, such as climatic conditions, distribution of ecoregions, land cover categories, deforestation dynamics, agricultural expansion, fire regimes, infrastructural development, protected areas, and future deforestation scenarios. This study is meant to be a resource and reference work, helping to embed the ATTO observations into the larger context of human-caused transformations of Amazonia. We conclude that the chances to observe an unperturbed rain forest–atmosphere exchange at the ATTO site will likely decrease in the future, whereas the atmospheric signals from human-made and climate-change-related forest perturbations will increase in frequency and intensity.

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Section: Deforestation and Agro-industrial Expansionmentioning

confidence: 98%

Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory

et al. 2019

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“…Like in the Amazon rainforest, the cerrado vegetation of Central Brazil, which includes the tropical wetland of the Pantanal Matogrossense, is being rapidly replaced by grassland and soybean plantations. Recently Morton et al (2006) and Souza (2006) used satellite images to demonstrate fast cerrado deforestation and the land use after deforestation. The effects on the bee fauna both in the Amazon rainforest as well in the cerrado in a short span of time can only be roughly estimated, but predictions for the future are potentially catastrophic because they cover large areas, including complete river drainage systems and impact global carbon and water cycles, energy balance and climate (Goudie, 2001;WWF, 2008).…”

Section: Deforestationmentioning

confidence: 99%

Diversity, threats and conservation of native bees in the Neotropics

et al. 2009

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The Neotropics bee fauna is very rich with 5000 recognised species, including 33 genera (391 species) of Meliponini, but it is estimated to be at least three fold greater in species richness. Deforestation, agriculture intensification and introduction/spread of exotic competing bee species are considered the main threats to most indigenous species, although other less obvious causes can affect the populations of some bee species locally. Efforts to conserve the native bee fauna include better knowledge of bee richness and diversity (standardized surveys, larger bee collections and appropriate identification of bee species) and of their population dynamics, raising of public and policy makers' awareness, commercial applications of bee products and services such as pollination and preservation of natural habitat.

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“…It is conducted by a comparatively small number of largeholders 4 , including industrial logging to create soy plantations, cattle ranches, large-scale timber production, and mining. In the Amazon, cattle ranching has clearly been the dominating factor, accounting for about 70 % of deforestation (Souza, 2006;Malhi et al, 2008;Barona et al, 2010). Note that the relative contributions of small-vs. large-10 holders as a function of socioeconomic conditions is still a subject of active and controversial debate (e.g., Ludewigs et al, 2009;Pacheco, 2012;Pereira et al, 2016).…”

Section: Deforestation and Agro-industrial Expansionmentioning

confidence: 99%

Response to the referee #1

Pöhlker¹

2018

Preprint

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The Amazon rain forest experiences the combined pressures from man-made deforestation and progressing climate change, causing severe and potentially disruptive perturbations of the ecosystem's integrity and stability. To intensify research on critical aspects of Amazonian biosphere-atmosphere exchange, the Amazon Tall Tower Observatory (ATTO) has been established in the central Amazon Basin. Here we present a 5multi-year analysis of backward trajectories to derive an effective footprint region of the observatory, which spans large parts of the particularly vulnerable eastern basin. Further, we characterize geospatial properties of the footprint regions, such as climatic conditions, distribution of ecoregions, land cover categories, deforestation dynamics, agricultural expansion, fire regimes, infrastructural development, protected areas, as well as future deforestation scenarios. This study is meant to be a resource and reference work, helping to embed 10 the ATTO observations into the larger context of man-made transformations of Amazonia. We conclude that the chances to observe an unperturbed rain forest-atmosphere exchange will likely decrease in the future, whereas the atmospheric signals from man-made and climate change-related forest perturbations will likewise increase in frequency and intensity.Atmos. Chem. Phys. Discuss., https://doi.

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Mapping land use of tropical regions from space

Cited by 12 publications

References 22 publications

Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory

Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory

Diversity, threats and conservation of native bees in the Neotropics

Response to the referee #1

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