Streamflow response to native forest restoration in former Eucalyptus plantations in south central Chile

Abstract Information on how wildlife is affected by pine plantation clearcutting is relevant for designing management strategies to promote biodiversity conservation in productive systems. By comparing the number of records of carnivores in a mosaic of pine plantations and native forest remnants before and after pine harvesting, we assessed the effect of plantation clearcutting on carnivore presence in ten sampling areas in Central Chile. We also included a number of covariates to account for their potential confounding effects, for example, the distance between each site and the nearesting human settlement and vegetation cover. A total of 10 species were observed, but no negative effect of clearcutting on carnivore presence was detected. Only the culpeo fox (Lycalopex culpaeus) responded positively to the harvesting of pine plantations. The threatened kodkod (Leopardus guigna) was absent in clearcut areas and the number of records increased in forests or plantations with a dense understorey. The domestic dog (Canis lupus familiaris) responded positively to human settlements and seems to prefer more open areas. The number of records for the Puma (Puma concolor) and the domestic cat (Felis silvestris catus) was too few, and hence, we could not make any inference regarding these two species. The other species recorded showed different responses to one or more of the included covariates. Although our results showed that the recording of some species could change in the short term after pine harvesting, future studies should assess the impact of clearcutting at a much higher scale, both in terms of space and time.

Download Full-text

Integrating socio-ecological dynamics into land use policy outcomes: A spatial scenario approach for native forest conservation in south-central Chile

Land Use Policy ◽

10.1016/j.landusepol.2019.01.042 ◽

2019 ◽

Vol 84 ◽

pp. 31-42 ◽

Cited By ~ 2

Author(s):

Daniela Manuschevich ◽

Pablo Sarricolea ◽

Mauricio Galleguillos

Keyword(s):

Land Use ◽

Forest Conservation ◽

Land Use Policy ◽

Policy Outcomes ◽

Native Forest ◽

Ecological Dynamics ◽

Central Chile ◽

South Central ◽

Scenario Approach

Download Full-text

Modelling the Effects of Changes in Forest Cover and Climate on Hydrology of Headwater Catchments in South-Central Chile

Water ◽

10.3390/w12061828 ◽

2020 ◽

Vol 12 (6) ◽

pp. 1828

Author(s):

Guillermo Barrientos ◽

Albert Herrero ◽

Andrés Iroumé ◽

Oscar Mardones ◽

Ramon J. Batalla

Keyword(s):

Forest Cover ◽

Geographical Area ◽

Change Scenario ◽

Native Forest ◽

Land Uses ◽

Central Chile ◽

Partial Harvest ◽

South Central ◽

Climatic Scenarios ◽

The Impact

This study analyses the changes in the runoff of forested experimental catchments in south-central Chile, to determine to what extent observed trends can be attributed to effects of intensive forestry and/or climate change. For this, we applied the distributed TETIS® model to eight catchments (7.1−413.6 ha) representative of the land uses and forestry activities in this geographical area. Rainfall and runoff data collected between 2008 and 2015 were used for modelling calibration and validation. Simulation of three land uses (current cover, partial harvest and native forest) and 25 combinations of climatic scenarios (percentage increases or decreases of up to 20% of rainfall and evapotranspiration relative to the no-change scenario applied to input series) were used in each calibration. We found that changes in land use and climate had contrasting effects on runoff. Smaller catchments affected by the driest climatic scenarios experienced higher runoff when the forest cover was lower than under full forest cover (plantations or native forests). In contrast, larger catchments under all climatic scenarios yielded higher runoff below the full forest cover than under partial harvest and native forest. This suggests that runoff can be influenced, to a great extent, by rainfall decrease and evapotranspiration increase, with the model predicting up to a 60% decrease in runoff yield for the dry’s climatic scenario. This study proves to be relevant to inform ongoing discussions related to forest management in Chile, and is intended to minimize the impact of forest cover on runoff yield under uncertain climatic scenarios.

Download Full-text

Intertidal zonation patterns of macroinfauna over a range of exposed sandy beaches in south-central Chile

Marine Ecology Progress Series ◽

10.3354/meps101105 ◽

1993 ◽

Vol 101 ◽

pp. 105-118 ◽

Cited By ~ 57

Author(s):

E Jaramillo ◽

A McLachlan ◽

P Coetzee

Keyword(s):

Sandy Beaches ◽

Central Chile ◽

South Central ◽

Intertidal Zonation ◽

Zonation Patterns

Download Full-text

Cardiorespiratory Fitness: Reference on the Six-Minute Walk Test and Oxygen Consumption in Adolescents from South-Central Chile

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18052474 ◽

2021 ◽

Vol 18 (5) ◽

pp. 2474

Author(s):

Jaime Vásquez-Gómez ◽

Nelson Gatica Salas ◽

Pedro Jiménez Villarroel ◽

Luis Rojas-Araya ◽

Cesar Faundez-Casanova ◽

...

Keyword(s):

Cardiorespiratory Fitness ◽

Reference Values ◽

Estimation Error ◽

Walk Test ◽

Central Chile ◽

Six Minute Walk Test ◽

Body Adiposity ◽

South Central ◽

Males And Females ◽

Minute Walk

Cardiorespiratory fitness (CRF) provides oxygen to the exercising muscles and is related to body adiposity, with cardiometabolic variables. The aim was to develop reference values and a predictive model of CRF in Chilean adolescents. A total of 741 adolescents of both genders (15.7 years old) participated in a basic anthropometry, performance in the six-minute walk test (SMWT), and in Course Navette was measured. Percentiles were determined for the SMWT, for the V̇O2max, and an equation was developed to estimate it. The validity of the equation was checked using distribution assumptions and the Bland–Altman diagram. The STATA v.14 program was used (p < 0.05). The 50th percentile values for males and females in the SMWT and in the V̇O2max of Course Navette were, respectively, from 607 to 690 and from 630 to 641 m, and from 43.9 to 45 and from 37.5 to 31.5 mlO2·kg·min−1, for the range of 13 to 17 years. For its part, the model to predict V̇O2max incorporated gender, heart rate, height, waist-to-height ratio (WHR), and distance in the SMWT (R2 = 0.62; estimation error = 0.38 LO2·min−1; p <0.001). Reference values can guide physical fitness in Chilean adolescents, and V̇O2max was possible to predict from morphofunctional variables.

Download Full-text