LBA-ECO LC-07 JERS-1 SAR Flooded Wetlands and Vegetation, Amazon Basin: 1995-1996

Hess, L.; Mélack, John M.; Affonso, Adriana Gomes; Barbosa, Cláudio Clemente Faria; Gastil-Buhl, M.; Novo, Evlyn Márcia Leão de Moraes

doi:10.3334/ornldaac/1284

Cited by 5 publications

(2 citation statements)

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“…All data in this study are publicly available and can be accessed from the links given in the text. Discharge data from HYBAM (http://www.ore-hybam.org) and ANA (using QGIS plugin; https://plugins.qgis.org/plugins/ ana_data_acquisition/), water surface altimetry data from ENVISAT (http://hydroweb.theia-land.fr/), flooded area (GIEMS-2) from Prigent et al (2020), and 3-arc second static high flood extent from Hess et al (2015). The Global Hydrodynamic Model CaMa-Flood is available from Yamazaki et al (2021).…”

Section: Data Availability Statementmentioning

confidence: 99%

“…In addition to this, we have evaluated the model considering flood extent (FE; high-resolution static map representing the spatial distribution of flooded pixels) of high floods given by Hess et al (2015) to show the method can be modified to consider other metrics for robust evaluation. The OSK has been estimated first considering the weights of 33.33%, 33.33%, 16.67%, and 16.67% for Q, WSE, FA, and FE, respectively, and second, considering equal weights of 25% for all four variables (refer Figures S10 and S11 The current method decomposed 25 sub-basins for the comparative evaluation of CaMa-Flood with the SRTM and MERIT DEMs.…”

Section: Multivariable Integrated Evaluation With Different Manning's...mentioning

confidence: 99%

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Multivariable Integrated Evaluation of Hydrodynamic Modeling: A Comparison of Performance Considering Different Baseline Topography Data

Modi

Revel

Yamazaki

2022

Water Resources Research

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Continental-scale river hydrodynamic modeling is essential for understanding the global hydrological cycle and supporting flood monitoring, as well as for water resource management pertaining to water security and natural hazards (Siqueira et al., 2018). Hydrodynamic modeling processes depend on topographic data to replicate characteristics and processes within a landscape (Callow et al., 2007;Jarihani et al., 2015). Data from a digital elevation model (DEM) representing topography comprises one of the critical data sets required in many types of studies, such as lake water storage changes, river routing, and flood inundation modeling (Hawker, Bates,

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Section: Data Availability Statementmentioning

confidence: 99%

Section: Multivariable Integrated Evaluation With Different Manning's...mentioning

confidence: 99%

Multivariable Integrated Evaluation of Hydrodynamic Modeling: A Comparison of Performance Considering Different Baseline Topography Data

Modi

Revel

Yamazaki

2022

Water Resources Research

View full text Add to dashboard Cite

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Institutional effects on ecological outcomes of community-based management of fisheries in the Amazon

Arantes

Castello

Basurto

et al. 2021

Ambio

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Communities throughout the globe are increasingly being given the responsibility of resource management, making it necessary to understand the factors that lead to success in community-based management (CBM). Here, we assessed whether and how institutional design principles affect the ecological outcomes of CBM schemes for Arapaima sp., an important common-pool fishery resource of the Amazon Basin. We quantified the degree of presence of Ostrom's (Science 325:419-422, 1990) institutional design principles in 83 communities using a systematic survey, and quantitatively linked the design principles to a measure of ecological outcome (arapaima density) in a subset of 39 communities to assess their influence. To understand regional patterns of institutional capacity for CBM, we evaluated the degree of presence of each principle in all 83 communities. The principle scores were positively related to arapaima density in the 39 CBM schemes, explaining about half of the variation. Design principles related to defined boundaries and graduated sanctions exerted the strongest influence on the capacity of CBM to increase arapaima density. The degree to which most principles were present in all 83 communities was generally low, however, with the two most influential principles (defined boundaries and graduated sanctions) being the least present of all. Although the roles of the other principles (management rules, conflict resolution, collective action, and monitoring systems) are probably important, our results indicate that efforts aimed at strengthening the presence of defined boundaries and graduated sanctions in communities hold promise to improve the effectiveness of arapaima CBM regionally.

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Pronounced loss of Amazon rainforest resilience since the early 2000s

2022

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The resilience of the Amazon rainforest to climate and land-use change is crucial for biodiversity, regional climate and the global carbon cycle. Deforestation and climate change, via increasing dry-season length and drought frequency, may already have pushed the Amazon close to a critical threshold of rainforest dieback. Here, we quantify changes of Amazon resilience by applying established indicators (for example, measuring lag-1 autocorrelation) to remotely sensed vegetation data with a focus on vegetation optical depth (1991–2016). We find that more than three-quarters of the Amazon rainforest has been losing resilience since the early 2000s, consistent with the approach to a critical transition. Resilience is being lost faster in regions with less rainfall and in parts of the rainforest that are closer to human activity. We provide direct empirical evidence that the Amazon rainforest is losing resilience, risking dieback with profound implications for biodiversity, carbon storage and climate change at a global scale.

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LBA-ECO LC-07 JERS-1 SAR Flooded Wetlands and Vegetation, Amazon Basin: 1995-1996

Cited by 5 publications

References 0 publications

Multivariable Integrated Evaluation of Hydrodynamic Modeling: A Comparison of Performance Considering Different Baseline Topography Data

Multivariable Integrated Evaluation of Hydrodynamic Modeling: A Comparison of Performance Considering Different Baseline Topography Data

Institutional effects on ecological outcomes of community-based management of fisheries in the Amazon

Pronounced loss of Amazon rainforest resilience since the early 2000s

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