Preface for the South American Hydrology Virtual Special Issue

Boutt, D. F.; Iroumé, Andrés

doi:10.1002/hyp.11166

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…Initiatives to link such catchments studies and data sets are particularly urgently needed in more poorly studied parts of the world where monitoring is much less extensive, yet pressure on land and water resources is rapidly growing, often compounded by rapid climate change. In this context, new network in regions in South America are particularly encouraging [ Boutt and Iroume , ].…”

Section: Scaling Up: Network Of Experimental Watershedsmentioning

confidence: 99%

The essential value of long‐term experimental data for hydrology and water management

Tetzlaff

Carey

McNamara

et al. 2017

Water Resources Research

121

127

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Observations and data from long‐term experimental watersheds are the foundation of hydrology as a geoscience. They allow us to benchmark process understanding, observe trends and natural cycles, and are prerequisites for testing predictive models. Long‐term experimental watersheds also are places where new measurement technologies are developed. These studies offer a crucial evidence base for understanding and managing the provision of clean water supplies, predicting and mitigating the effects of floods, and protecting ecosystem services provided by rivers and wetlands. They also show how to manage land and water in an integrated, sustainable way that reduces environmental and economic costs.

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Section: Scaling Up: Network Of Experimental Watershedsmentioning

confidence: 99%

The essential value of long‐term experimental data for hydrology and water management

Tetzlaff

Carey

McNamara

et al. 2017

Water Resources Research

121

127

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“…The limited availability of data from small catchments in South America (Jones et al, 2017) means that sharing these data is especially important. A Special Issue of Hydrological Processes titled ‘Hydrological Processes on South American hydrology’ (edited by Boutt & Iroume, 2018) emphasized the value of sharing local data. The papers in the special issue provide useful insights for the region into important areas of knowledge such as the ‘two water worlds’ hypotheses applied in a wet environment (Hervé‐Fernández et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Forestal Arauco experimental research catchments; daily rainfall‐runoff for 10 catchments with different forest types in Central‐Southern Chile

Balocchi

White

Silberstein

et al. 2021

Hydrological Processes

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Forestal Arauco (FA), a global manufacturer of forest products, manages more than 1 million ha of forest plantations and oversees the conservation of more than half a million hectares of native forest and vegetation in Brazil, Argentina and Chile. In 2008, FA responded to local concerns about the effect of plantations on water resources and commenced streamflow monitoring in catchments in the coastal range of centralsouthern Chile between 35 and 39 of latitude south. This data note presents an overview of daily streamflow and rainfall records for 10 small catchments (18-112 ha) from 2008 to 2018. The catchments are covered by three different forest types, namely native forest (2), pine plantations of different ages (6) and eucalypt plantations(2). All of these catchments share similar metamorphic geology. A 90 V notch weir was built at each catchment outlet and data collected at 5 min interval using a pressure transducer that was calibrated monthly. The dataset is part of a research programme aiming to improve our understanding about the role of forest plantations on water balance at a stand and catchment level. It also includes the rainfall data from these catchments estimated using a combination of local rain gauges and data from the longer term records of the Chilean Directorate of Water. This dataset can be used in hydrological modelling and in a wide range of research questions and water management issues regarding forest plantations in a Mediterranean climate.

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“…At large scales, deforestation and reductions in evapotranspiration are also linked to reductions in average rainfall or in rainfall frequency (Ellison et al, 2012;Lawrence & Vandecar, 2015;Salazar et al, 2015;Souza-Filho et al, 2016;Sumila et al, 2017), since precipitation recycling represents a fundamental part of the water cycle (Martinez & Dominguez, 2014). Direct impacts of land use change in the hydrological cycle have been extensively examined, with recent research (Boutt & Iroume, 2017), revealing an increased interest in research exploring South American data. However, the responses of streamflow to nonstationarities in rainfall over different types of land cover, particularly in the tropics and in anthropogenically modified basins, remain uncertain to a large extent (Wohl et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The Role of Land Cover in the Propagation of Rainfall Into Streamflow Trends

Chagas

Chaffe

2018

Water Resources Research

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The replacement of natural forests with agriculture is generally associated with modifications in the hydrological behavior of a basin. This is particularly notable in the tropics and subtropics. Southern Brazil is a region with extensive agricultural production, forest conservation, and a vast unexplored streamflow data despite substantial rainfall trends observed in recent decades. In this work, we explore trends in the streamflow regime in the majority of the monitored basins in Southern Brazil. Additionally, we evaluate if pristine forested basins and agricultural nonforested basins have significantly different streamflow responses to changes in rainfall. We analyzed annual averages, maxima, minima, and seasonality of a 36‐year data set (1975–2010) of 675 rainfall and 140 streamflow gauges. Results reveal that large trends are widespread in Southern Brazil, especially in basins with areas smaller than 10,000 km2. Changes in the rainfall regime did not directly translate into changes in the streamflow regime. Changes in the annual maximum flow of forested basins were not statistically significant even when the annual average and maximum rainfall increased significantly. Correlations between changes in rainfall and streamflow for two indices, namely, duration of low‐magnitude events and seasonality, were statistically significant (p < 0.05) only for agricultural basins. The results indicate a higher propagation of hydrological changes through anthropogenically modified systems, providing evidence that agricultural basins are more sensitive to changes in the rainfall regime.

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Preface for the South American Hydrology Virtual Special Issue

Cited by 4 publications

References 21 publications

The essential value of long‐term experimental data for hydrology and water management

The essential value of long‐term experimental data for hydrology and water management

Forestal Arauco experimental research catchments; daily rainfall‐runoff for 10 catchments with different forest types in Central‐Southern Chile

The Role of Land Cover in the Propagation of Rainfall Into Streamflow Trends

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