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

Balocchi, Francisco; White, D. A.; Silberstein, Richard; Arellano, Pablo Ramírez de

doi:10.1002/hyp.14047

Cited by 7 publications

(11 citation statements)

References 29 publications

(31 reference statements)

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“…The data covers the period from 2008 and 2018 in some catchments; MLC2 and SG have the longest streamflow record (10 years) and Q3 the shortest (3 years) (Balocchi et al, 2021). All the models were more efficient predictors of flow in winter than summer.…”

Section: Resultsmentioning

confidence: 99%

“…the shortest (3 years) (Balocchi et al, 2021). All the models were more efficient predictors of flow in winter than summer.…”

Section: Comparative Performance Of the Mathematical Modelsmentioning

confidence: 88%

“…A 90° V‐notch weir was installed at the outlet of each catchment. The height of the water in the weir was measured with a pressure transducer flow gauge (KPSI 550, Pressure Systems Inc., Virginia, USA, and OTT Orpheus Mini, Kempten, Germany, more details in Balocchi et al, 2021) and the streamflow was estimated every 5 min from the theoretical rating curve. Q2 has streamflow records since 2009, Q3 since 2013, BLQ1 and 2 since 2013, MLC1 and MLC2 since 2008, SG since 2008 and ER since 2014 (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…For the SG catchment, the rainfall was measured at Llancahue which is around 9 km to the west of the catchment. For ER there is no nearby DGA station, so the CR2MET (Center for Climate and Resilience Research Meteorological dataset) rainfall product (5‐km grid for continental Chile) was used (more details in Balocchi et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

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Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

Balocchi

Flores

Arumí

et al. 2021

Hydrological Processes

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In central Chile, many communities rely on water obtained from small catchments in the coastal mountains. Water security for these communities is most vulnerable during the summer dry season and, from 2010 to 2017, rainfall during the dry season was between 20% and 40% below the long‐term average. The rate of decrease in stream flow after a rainfall event is a good measure of the risk of flow decreasing below a critical threshold. This risk of low flow can be quantified using a recession coefficient (α) that is the slope of an exponential decay function relating flow to time since rainfall. A mathematical model was used to estimate the recession coefficient (α) for 142 rainstorm events (64 in summer; 78 in winter) in eight monitored catchments between 2008 and 2017. These catchments all have a similar geology and extend from 35 to 39 degrees of latitude south in the coastal range of south‐central Chile. A hierarchical cluster analysis was used to test for differences between the mean value of α for different regions and forest types in winter and summer. The value of α did not differ (p < 0.05) between catchments in winter. Some differences were observed during summer and these were attributed to morphological differences between catchments and, in the northernmost catchments, the effect of land cover (native forest and plantation). Moreover, α for catchments with native forest was similar to those with pine plantations, although there was no difference (p < 0.05) between these and Eucalyptus plantations. The recession constant is a well‐established method for understanding the effect of climate and disturbance on low flows and baseflows and can enhance local and regional analyses of hydrological processes. Understanding the recession of flow after rainfall in small headwater catchments, especially during summer, is vital for water resources management in areas where the establishment of plantations has occurred in a drying climate.

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Section: Resultsmentioning

confidence: 99%

“…the shortest (3 years) (Balocchi et al, 2021). All the models were more efficient predictors of flow in winter than summer.…”

Section: Comparative Performance Of the Mathematical Modelsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

Balocchi

Flores

Arumí

et al. 2021

Hydrological Processes

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“…There is global concern about how the decreased precipitation and increased temperatures associated with climate change will affect water availability [1,2]. There is also the potential for land use and management to amplify the effects of climate change on water resources [3]. Since 2010, Chile has experienced its longest drought on record, and this has been characterized by decreasing precipitation and increasing air temperatures [4,5].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Three Daily Rainfall-Runoff Hydrological Models Using Four Evapotranspiration Models in Four Small Forested Watersheds with Different Land Cover in South-Central Chile

Flores

Rodrı́guez

Yépez

et al. 2021

Water

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We used the lumped rainfall–runoff hydrologic models Génie Rural à 4, 5, 6 paramètres Journalier (GR4J, GR5J and GR6J) to evaluate the most robust model for simulating discharge on four forested small catchments (<40 ha) in south-central Chile. Different evapotranspiration methods were evaluated: Oudin, Hargreaves–Samani and Priestley–Taylor. Oudin’s model allows the achievement of the highest efficiencies in the flow simulation. The more sensitive parameters for each model were identified through a Generalized Probability Uncertainty Estimation (GLUE) model. Our results demonstrate that the three hydrological models were capable of efficiently simulating flow in the four study catchments. However, the GR6J model obtained the most satisfactory results in terms of simulated to measured streamflow closeness. In general, the three models tended to underestimate peak flow, as well as underestimate and overestimate flow events in most of the in situ observations, according to the probability of non-exceedance. We also evaluated the models’ performance in a simulation of summer discharge due to the importance of downstream water supply in the months of greatest scarcity. Again, we found that GR6J obtained the most efficient simulations.

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Growth, water use, and water use efficiency of Eucalyptus globulus and Pinus radiata plantations compared with natural stands of Roble-Hualo forest in the coastal mountains of central Chile

White

Silberstein

Balocchi

et al. 2021

Forest Ecology and Management

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

Cited by 7 publications

References 29 publications

Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

Comparison of streamflow recession between plantations and native forests in small catchments in Central‐Southern Chile

Comparison of Three Daily Rainfall-Runoff Hydrological Models Using Four Evapotranspiration Models in Four Small Forested Watersheds with Different Land Cover in South-Central Chile

Growth, water use, and water use efficiency of Eucalyptus globulus and Pinus radiata plantations compared with natural stands of Roble-Hualo forest in the coastal mountains of central Chile

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