Modeling the impact of net primary production dynamics on post-disturbance Amazon savannization

Senna, Mônica Carneiro Alves; Costa, Marcos Heil; Davidson, Eric A.; Nobre, Carlos A.

doi:10.1590/0001-37652014108212

Cited by 6 publications

(3 citation statements)

References 40 publications

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“…In addition, it should also be noted that there has been a regeneration of peasant vegetation and savannas, especially the latter, which obtained an amount Journal of Geographic Information System greater than 19.5 thousand ha of vegetation regeneration, while the areas of peasant vegetation registered a regeneration just above 366 ha. Indicating that despite the recurrent anthropic interventions, the phytophysiognomy of the cerrado and Amazon biome possess expressive resilience, as already proven by [9], [48] [49].…”

Section: Evaluation Of the Behavior Of Ate Amazon-cerrado In The Aragmentioning

confidence: 83%

Multitemporal Analysis of Land Use and Coverage in the Low Course of the Araguaia River

Oliveira¹,

Souza²,

Lima³

2020

JGIS

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This work aimed to analyze the spatial behavior of plant formations and land use in the Ecological Tension Area Amazon-Cerrado. To this end, the Araguaia river basin was selected, in its low course, because it constitutes a physical-natural limit between the two Biomms, with intense dynamics of use and land cover Thus, in addition to researching scientific references and socioeconomic data from secondary sources, a geographic database was elaborated, with georeferenced data, and spatial operations are carried out. Among them, a supervised classification of land use and coverage, with multi-temporal analysis between the years 1984, 2000 and 2018. Thus, an expansion of 4.2 ha of Forest (Amazon biome) was observed on the savanic phytophysiognomy (Cerrado). However, the suppression of forested areas reached values around 21,700 km 2 , with direct conversions to anthropic activities, mainly pasture, about 71%. The results of the mapping compared with the data of the agricultural census show that the landscape of the Araguaia river basin, in its low course, is dominated by areas of pasture managed. However, public policies and government investments have fomented the expansion of agriculture in the direct bank of the river Araguaia, from 2000 onwards, and that the landscape of the left bank is dominated by pasture managed. Finally, it was found that the implantation of protective areas contributed to the vegetational regeneration of both biomms.

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Section: Evaluation Of the Behavior Of Ate Amazon-cerrado In The Aragmentioning

confidence: 83%

Multitemporal Analysis of Land Use and Coverage in the Low Course of the Araguaia River

Oliveira¹,

Souza²,

Lima³

2020

JGIS

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“…CCM3-IBIS was calibrated against Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) tower results and extensively validated against spatial fields of incident solar radiation, precipitation, land cover patterns, heterotrophic and root respiration, total NPP, aboveground NPP, wood NPP, leaf area index, and aboveground live biomass [25]. The simulated climatological precipitation of the CCM3-IBIS model is well correlated with the observed dataset in regions of South America [26,27].…”

Section: Model Description and Experiments Designmentioning

confidence: 92%

Response of South American Terrestrial Ecosystems to Future Patterns of Sea Surface Temperature

Pereira¹,

Costa²,

Justino³

et al. 2017

Advances in Meteorology

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Global warming in the first half of the 21st century is likely to have profound influences on South American vegetation and climate. Although coupled atmosphere-biosphere models have been widely used to forecast future vegetation patterns under various scenarios of global warming, they have not been used to assess the potentially critical role of variations in sea surface temperature (SST) in modifying the climate-vegetation interactions. Here, we use monthly output of a 100-year coupled model run to investigate the relationship between SST, precipitation, and productivity of vegetation. Specifically, we assess statistical correlations between SST variability and vegetation in six different South America regions: Northern South America, Western Amazonia, Eastern Amazonia, Northeast Brazil, Central Brazil, and Patagonia. Our model robustly simulates changes in mean precipitation, net primary production (NPP), upper canopy leaf area index (LAI), and lower canopy LAI under warming and nonwarming scenarios. Most significantly, we demonstrate that spatial-temporal variability in SST exerts a strong influence over the vegetation dynamics in all six South American regions.

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“…On the other hand, it is also well-known that the progression of the savannization has a long-lasting impact in the area (e.g., Senna et al 2014). In a very interesting study, Maria E.N.S.…”

mentioning

confidence: 96%

Protein extraction methods of tomato, environmental changes of the Amazon Forest in Roraima (northernmost part of Brazil) for the last 1000 years, and histological characteristics of a dolphin species

Kellner

2015

An. Acad. Bras. Ciênc.

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Modeling the impact of net primary production dynamics on post-disturbance Amazon savannization

Cited by 6 publications

References 40 publications

Multitemporal Analysis of Land Use and Coverage in the Low Course of the Araguaia River

Multitemporal Analysis of Land Use and Coverage in the Low Course of the Araguaia River

Response of South American Terrestrial Ecosystems to Future Patterns of Sea Surface Temperature

Protein extraction methods of tomato, environmental changes of the Amazon Forest in Roraima (northernmost part of Brazil) for the last 1000 years, and histological characteristics of a dolphin species

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