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Modeling present and future ice covers in two Antarctic lakes

Año: 2019
Categoría: Hidrología, Impactos del cambio climático, Modelación hidrológica

Título publicación

Modeling present and future ice covers in two Antarctic lakes

Autores: Sebastián Echeverría, Mark B. Hausner, Nicolás Bambach, Sebastián Vicuña y Francisco Suárez

Revista: Journal of Glaciology Journal of Glaciology (2019) 1–14  - https://doi.org/10.1017/jog.2019.78

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Abstract

Antarctic lakes with perennial ice covers provide the opportunity to investigate in-lake processes without direct atmospheric interaction, and to study their ice-cover sensitivity to climate conditions. In this study, a numerical model – driven by radiative, atmospheric and turbulent heat fluxes from the water body beneath the ice cover – was implemented to investigate the impact of climate change on the ice covers from two Antarctic lakes: west lobe of Lake Bonney (WLB) and Crooked Lake.

Modelling the current and future biodiversity distribution in the Chilean Mediterranean hotspot. The role of protected areas network in a warmer future

Año: 2019
Categoría: Biodiversidad, Cambio climático, Conservación, Medio Ambiente

Título publicación

Modelling the current and future biodiversity distribution in the Chilean Mediterranean hotspot. The role of protected areas network in a warmer future

Autores: Taryn Fuentes-Castillo, Rosa A. Scherson, Pablo A. Marquet, Javier Fajardo, Derek Corcoran, María José Román, Patricio Pliscoff

Revista: Biodiversity and Distributions (2019) 00:1-13

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Abstract

Mediterranean Chile is part of the five recognized mediterranean‐type climates in the world and harbours a very rich floral diversity. Climate change has been reported as a significant threat to its biodiversity. We used the flora of Mediterranean Chile to analyse how biodiversity patterns, as measured by phylogenetic diversity, genus and species richness will respond to climate change scenarios and identify the areas that will harbour the greatest evolutionary potential and biodiversity richness. We also evaluated how these spatial patterns are depicted within the current network of protected areas.

Knowledge gaps and climate adaptation policy: a comparative analysis of six Latin American countries

Año: 2019
Categoría: Adaptación, Política pública

Título publicación

Knowledge gaps and climate adaptation policy: a comparative analysis of six Latin American countries

Autores: Daniel Ryan, Eduardo Bustos

Revista: Climate Policy (2019) 9:10, 1297-1309, DOI: 10.1080/14693062.2019.1661819

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Abstract

This article identifies and analyzes some of the main knowledge gaps that affect the development of climate adaptation policies in the Latin American context. It is based on a comparative analysis of online survey results conducted among government officials working on climate adaptation in six countries of the region: Argentina, Brazil, Chile, Costa Rica, Paraguay and Uruguay.

Priority questions for biodiversity conservation in the Mediterranean biome: Heterogeneous perspectives across continents and stakeholders

Año: 2019
Categoría: Biodiversidad suelos, Conservación, Servicios ecosistémicos, Medio Ambiente

Título publicación

Priority questions for biodiversity conservation in the Mediterranean biome: Heterogeneous perspectives across continents and stakeholders

Autores: Francisco Moreira, Nicky Allsopp, Karen J. Esler, Grant Wardell-Johnson, Leonardo Ancilloto, Margarita Arianoutsou, Jeffrey Clary, Lluis Brotons, Miguel Clavero, Panayiotis G. Dimitrakopoulos, Raquel Fagoaga, Peggy Fiedler, Ana F. Filipe, Eliezer Frankenberg, Milena Holmgren, Pablo A. Marquet, Maria J. Martinez-Harms, Adriano Martinoli, Ben P. Miller, Linda Olsvig-Whittaker, Patricio Pliscoff, Phil Rundel, Danilo Russo, Jasper A. Slingsby, John Thompson, Angela Wardell-Johnson, Pedro Beja.

Revista: Conservation Science and Practice (2019) e118. https://doi.org/10.1111/csp2.118

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Abstract

The identification of research questions with high relevance for biodiversity conservation is an important step towards designing more effective policies and management actions, and to better allocate funding among alternative conservation options. However, the identification of priority questions may be influenced by regional differences in biodiversity threats and social contexts, and to variations in the perceptions and interests of different stakeholders. Here we describe the results of a prioritization exercise involving six types of stakeholders from the Mediterranean biome, which includes several biodiversity hotspots spread across five regions of the planet (Europe, Africa, North and South America, and Australia).

Research priorities for maintaining biodiversity’s contributions to people in Latin America

Año: 2019
Categoría: Biodiversidad, Impactos del cambio climático

Título publicación

Research priorities for maintaining biodiversity’s contributions to people in Latin America

Autores: Richard G. Pearson, Enrique Martínez-Meyer, Mercedes Andrade Velázquez, Mercedes Caron, Rogelio O. Corona-Núñez, Katrina Davis, América Paz Durán, Rodrigo García-Morales, Talya D. Hackett, Daniel J. Ingram, Rafael Loyola Díaz, Julián Lescano, Andrés Lira-Noriega, Yolanda López-Maldonado, Daniela Manuschevich, Alma Mendoza, Ben Milligan, Simon C. Mills, Darío Moreira-Arce, Luzma F. Nava, Vicencio Oostra 1, Nathan Owen, David Prieto-Torres, Clarita Rodríguez Soto, Thomas Smith, Andrew J. Suggitt, Camila Tejo Haristoy, Jorge Velásquez-Tibatá, Sandra Díaz, Pablo A. Marquet

Revista: UCL Open: Environment. (2019)- (1):02

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Abstract

Maintaining biodiversity is crucial for ensuring human well-being. The authors participated in a workshop held in Palenque, Mexico, in August 2018, that brought together 30 mostly early-career scientists working in different disciplines (natural, social and economic sciences) with the aim of identifying research priorities for studying the contributions of biodiversity to people and how these contributions might be impacted by environmental change.

Using forest historical information to target landscape ecological restoration in Southwestern Patagonia

Año: 2019
Categoría: Biodiversidad suelos, Conservación, Planificación territorial, Servicios ecosistémicos

Título publicación

Using forest historical information to target landscape ecological restoration in Southwestern Patagonia

Autores: Gabriel Zegers, Eduardo Arellano, Lars Ostlund

Revista: Ambio (2019) 1-14

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Abstract

Ecotonal zones between eastern semi-arid steppes and Nothofagus spp. forests in western Patagonia are the result of broad ecosystem changes, which have intensified in the last 140 years. Our objectives were to determine historical changes in land use, land cover, and forces driving such changes in Nothofagus ecosystems in the Río Verde district in southern Chile, to support future management recommendations. This interdisciplinary study used historical records including scientific and military expeditions, Landsat imagery, and other archival sources.

Seasonal hydroclimatic ensemble forecasts anticipate nutrient and suspended sediment loads using a dynamical-statistical approach

Año: 2019
Categoría: Hidrología, Modelación hidrológica, Recursos hídricos

Título publicación

Seasonal hydroclimatic ensemble forecasts anticipate nutrient and suspended sediment loads using a dynamical-statistical approach

Autores: Sanjib Sharma, Heather Gall, Jorge Gironás, Alfonso Mejía

Revista: Environmental Research Letters (2019) 14(8) : 084016

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Abstract

Subseasonal-to-seasonal (S2S) water quantity and quality forecasts are needed to support decision and policy making in multiple sectors, e.g. hydropower, agriculture, water supply, and flood control. Traditionally, S2S climate forecasts for hydroclimatic variables (e.g. precipitation) have been characterized by low predictability. Since recent next-generation S2S climate forecasts are generated using improved capabilities (e.g. model physics, assimilation techniques, and spatial resolution), they have the potential to enhance hydroclimatic predictions.

Estimating the Local Time of Emergence of Climatic Variables Using an Unbiased Mapping of GCMs. An Application in Semiarid and Mediterranean Chile

Año: 2019
Categoría: Cambio climático, Clima, Downscaling, Modelación climática

Título publicación

Estimating the Local Time of Emergence of Climatic Variables Using an Unbiased Mapping of GCMs. An Application in Semiarid and Mediterranean Chile

Autores: Cristian Chadwick, Jorge Gironás, Sebastián Vicuña, Francisco Meza

Revista: Journal of Hydrometeorology (2019), Aceptado.

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Abstract

The time at which climate change signal can be clearly distinguished from noise is known as Time of Emergence (ToE), and is typically detected by a General Circulation Model (GCM) signal-to-noise ratio exceeding a certain threshold. ToE is commonly estimated at large scales from GCMs, although management decisions and adaptation strategies are implemented locally.

Planform geometry and relief characterization of drainage networks in high-relief environments: An analysis of Chilean Andean basin

Año: 2019
Categoría: Hidrología, Modelación hidrológica

Título publicación

Planform geometry and relief characterization of drainage networks in high-relief environments: An analysis of Chilean Andean basin

Autores: Andrés Pereira-Claren, Jorge Gironás, Jeffrey Niemann, Paola Passalacqua, Alfonso Mejía, Cristián Escauriaza

Revista: Geomorphology (2019), 341: 46-64

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Abstract

Drainage network types give indications of the landscape evolution processes and the lithologic and structural conditions that produced them. Moreover, drainage network attributes affect the hydrologic response of basins. Several network types have been identified through visual inspection and, more recently, through quantitative methods developed and applied primarily on relatively low-relief regions.

On the Influence of Upstream Flow Contributions on the Basin Response Function for Hydrograph Prediction

Año: 2019
Categoría: Modelación hidrológica

Título publicación

On the Influence of Upstream Flow Contributions on the Basin Response Function for Hydrograph Prediction

Autores: Tomás Bunster, Jorge Gironás, Jeffrey Niemann

Revista: Water Resources Research (2019) 55(6)

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Abstract

Spatially distributed travel time (SDTT) methods have been developed as an alternative to semidistributed and fully distributed methods for rainfall‐runoff modeling. In these methods, the travel times of grid cells are summed along flow paths and then convoluted to generate the hydrograph at the outlet. One central aspect of SDTT models that remains partially addressed is the effect of upstream flow contributions and their dynamics on the calculated flood wave travel times.

Noticias

Francisco Meza, Académico y Fundador del Centro de Cambio Global UC se integra a la Academia Chilena de Ciencias Agronómicas

24-06-2019

La Academia Chilena de Ciencias Agronómicas (ACCA) incorporó este mes al investigador y docente de la Facultad de Agronomía e Ingeniería Forestal de la Universidad Católica Francisco Meza, por el...

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