Adison Altamirano

Adison Altamirano
Universidad de La Frontera · Department of Forest Sciences

Dr
Landscape Ecology

About

46
Publications
20,187
Reads
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Introduction
My research topic is Landscape Ecology being the main focus of my study: land use/cover patterns, forest loss dynamic, habitat fragmentation, biodiversity conservation, landscape restoration, and ecological modeling.

Publications

Publications (46)
Article
Full-text available
Data collection from large areas of native forests poses a challenge. The present study aims at assessing the use of UAV for forest inventory on native forests in Southern Chile, and seeks to retrieve both stand and tree level attributes from forest canopy data. Data were collected from 14 plots (45 × 45 m) established at four locations representin...
Article
An understanding of human attitudes towards wildlife can be an essential element in the success or failure of a conservation initiative, policy or practice and represents one of the main conservation problems for wildlife species. Despite the ecosystem services bats provide, they often are a socially stigmatized group, mis-perceived and even hunted...
Article
Public urban green spaces provide people with many benefits. Understanding the relationship between public urban green spaces’ characteristics and human well-being components may assist in future planning and design of these spaces. This study performed a systematic bibliographic review to analyse the relationships between green spaces' specific ch...
Chapter
Full-text available
Much progress has been made in remotely detecting forest loss, particularly by using satellite imagery. However, quantification of different stages of forest degradation continues to be challenging. Compared with satellites, UAVs (or drones) can deliver images of much higher spatial resolution and enable estimation of forest characteristics with gr...
Article
Full-text available
Distinguising between natural forests from exotic tree plantations is essential to get an accurate picture of the world’s state of forests. Most exotic tree plantations support lower levels of biodiversity and have less potential for ecosystem services supply than natural forests, and differencing them is still a challenge using standard tools. We...
Chapter
Full-text available
En el presente informe se resume la estrategia de evaluación del Riesgo climático en bosque nativo y en plantaciones forestales ante incendios forestales, y la evaluación del efecto directo del clima en la productividad fotosintética de ambos sistemas en función de los cambios recientes en precipitación y temperatura.
Article
Full-text available
Understanding of people’s landscape preferences is important for decision-making about land planning, particularly in the disturbance patterns that usually occur in rural-urban gradients. However, the use of different types of images concerning the same landscape may influence social preferences and thus perceptions of landscape management and plan...
Article
Chile’s temperate forest is a global biodiversity hotspot. An upsurge in alien forest plantations has disturbed and fragmented the landscape, promoting biological invasions. The invasion process is not fully understood since monitoring large and inaccessible areas can be prohibitively expensive and logistically challenging using field-based methods...
Article
Full-text available
The wildland-urban interface (WUI) is the spatial manifestation of human communities coupled with vegetated ecosystems. Spatial delineation of the WUI is important for wildfire policy and management, but is typically defined according to spatial relationships between housing development and wildland vegetation without explicit consideration of fire...
Article
Deforestation is widely studied throughout the world. However, a less evident issue is the effect of climate change and drought on remnants of native forests. The objective of this work was to understand the geographic variations in resistance to drought of the Mediterranean sclerophyllous forests of central Chile. These forests have been historica...
Article
1. Semi-arid and arid landscapes (dry-lands) cover 41% of the Earth’s land surface over five continents. These areas are home to 55% of mammal species. Bats have the second highest species richness among mammals, and, although many species are adapted to arid conditions, they are particularly sensitive in these habitats and require conservation pri...
Book
Full-text available
La submesa Cambio de Uso del Suelo (CUS) tuvo como objetivo compilar y presentar en un informe la evidencia científica disponible sobre los cambios de uso del suelo y sus impactos en relación con las opciones de mitigación del cambio climático. Esta submesa contó con la participación de más de 30 científicos de diversas áreas de las ciencias ambien...
Chapter
http://www.inap.uchile.cl/publicaciones/159662/informe-pais-estado-del-medio-ambiente-en-chile-2018
Article
Full-text available
The presence and attributes of perch trees in degraded areas may promote seed dispersal. We evaluated the effect of the distance from remnant forest fragments on seed rain of different fleshy-fruit tree species and examined whether the seed rain is favoured by some traits of the perch trees (Acacia caven), such as canopy diameter and tree height. T...
Article
Guidance for large-scale restoration of natural or semi-natural linear vegetation elements that takes into account the need to maintain human livelihoods such as farming is often lacking. Focusing on a Chilean biodiversity hotspot, we assessed the landscape in terms of existing woody vegetation elements and proposed a buffer strip and hedgerow netw...
Article
Full-text available
El monitoreo de los bosques es fundamental para la toma de decisiones de manejo y conservación. En Chile, el sistema de monitoreo de bosques se inició en el año 1994, y se ha mantenido mediante la realización de actualizaciones regionales. Esto ha permitido hacer un seguimiento temporal de la superficie, distribución y características del bosque na...
Article
Full-text available
Binary variables have two possible outcomes: occurrence or non-occurrence of an event (usually with 1 and 0 values, respectively). Binary data are common in ecology, including studies of presence/absence, alive/dead, and change/no-change. Logistic regression analysis has been widely used to model binary response variables. Unbalanced data (i.e., an...
Article
Globally, laws define both where protected areas are and their level of protection. Usually, the legal protection is not absolute and alternative land-uses can be implemented if perceived gains outweigh conservation losses. Technical reports, describing the importance of each protected area, are therefore crucial for decision-making, impact assessm...
Article
Globally, laws define both where protected areas are and their level of protection. Usually, the legal protection is not absolute and alternative land-uses can be implemented if perceived gains outweigh conservation losses. Technical reports, describing the importance of each protected area, are therefore crucial for decision-making, impact assessm...
Article
Full-text available
The understanding of the spatial and temporal patterns in land use and land cover (LULC) change is a key issue for conservation efforts. In the Chilean hotspot, different studies have attempted to understand variations of LULC change. Nevertheless, a broader understanding of common patterns and variability of LULC over the entire range of the hotsp...
Article
Full-text available
Ulex europaeus (gorse) is an invasive shrub deemed as one of the most invasive species in the world. U. europaeus is widely distributed in the south-central area of Chile, which is considered a world hotspot for biodiversity conservation. In addition to its negative effects on the biodiversity of natural ecosystems, U. europaeus is one of the most...
Article
Full-text available
Jubaea chilensis es un árbol endémico de la zona central de Chile (31º15’- 35º22’ S). Las principales amenazas actuales a su conservación estarían asociadas a diferentes limitantes a su regeneración natural, en especial la intensa cosecha de sus semillas. El análisis de patrones espaciales de distribución puede ser una importante herramienta para e...
Article
Full-text available
Jubaea chilensis is an endemic tree of Central Chile (31º15’-35º22’ S). The current main conservation threats for this species should be associated with different factors which limit its natural regeneration, in particular the intense seeds crop. The analysis of spatial distribution patterns can be an important tool to understand the forest dynamic...
Article
Full-text available
Jubaea chilensis is an endemic tree of Central Chile (31º15’- 35º22’ S). The current main conservation threats for this species should be associated with different factors which limit its natural regeneration, in particular the intense seeds crop. The analysis of spatial distribution patterns can be an important tool to understand the forest dynami...
Article
Full-text available
Forest biomass is one of the main alternatives that Chile could promote to supply the long-term demand of energy, which can help to diversify the national energy offer. In this study we assessed the biomass availability from native forests, considering biomass extraction based on silvicultural management and environmental and legal restrictions in...
Article
Full-text available
Keywords: Deforestation Timber plantation Chilean temperate forest Land use e land cover change a b s t r a c t Temperate forest represents the smallest area among the main world's forest biomes, but is one of those most threatened by forest loss. Chile contains most of the temperate forest in South America and more than half of the temperate fores...
Article
Full-text available
Forest fires are recognized as a serious problem. Despite its importance, research into modelling of forest fire occurrence is lacking for the southern hemisphere, in particular for Chile. We investigated how landscape heterogeneity affects the probability of the occurrence of forest fires in Central Chile. We fitted a logistic regression model whi...
Article
Full-text available
Forest fires are recognized as a serious problem. Despite its importance, research into modelling of forest fire occurrence is lacking for the southern hemisphere, in particular for Chile. We investigated how landscape heterogeneity affects the probability of the occurrence of forest fires in Central Chile. We fitted a logistic regression model whi...
Article
Full-text available
Loss of native forest is a key conservation concern globally, for reasons of biodiversity, climate change and ecosystem services. Landscape measures are used widely to characterize forest loss and associated landscape structure, but often without regard for structure imposed by the data used, and associated assumptions. Notably, forest loss is ofte...
Article
Full-text available
Los índices o métricas de paisaje han sido ampliamente utilizados para relacionar patrones espaciales con procesos o funciones ecológicas. Si bien, su utilización y aplicaciones son amplias, se ha encontrado que los índices de paisaje son muy sensibles a algunos aspectos relacionados con el análisis de imágenes de sensores remotos. El objetivo de e...
Article
Chile has more than half of the temperate forests in the southern hemisphere. These have been included among the most threatened eco-regions in the world, because of the high degree of endemism and presence of monotypic genera. In this study, we develop empirical models to investigate present and future spatial patterns of woody species richness in...
Article
Full-text available
Se realizó un análisis multitemporal para determinar los cambios en la cobertura del suelo en una zona de la precordillera andina de la Región del Maule, Chile. Para ello se utilizaron imágenes satelitales de los años 1989 y 2003, y se analizaron las causas probables de la deforestación del bosque nativo presente en estos ecosistemas. El bosque nat...
Article
Full-text available
A multitemporal analysis to determine the land cover change was conduced in the pre-Andean range of Maule region of Chile. We used satellite imagery from the year 1989 and 2003 to analyze the likely causes of native forest change. In this period, there was a reduction in native forest area of 44% in the study area, which is equivalent to an annual...
Chapter
Full-text available
Alerce (Fitzroya cupressoides, Cupressaceae) is a longlived conifer endemic to the forests of southern Chile and adjacent Argentina. The destruction of these forests by human-set fires and logging in the Central Depression in Chile was almost total, with only a dozen of 1-2 ha small fragments reported to have remained. In this chapter we aim to sys...
Chapter
Full-text available
Temperate and tropical montane forests in Latin America represent a major natural resource at both regional and national levels for a number of reasons – biological, climatic, economic, cultural. Native tree species in these forests share conservation problems because of deforestation, habitat degradation, overall biodiversity loss and integrity of...
Chapter
Full-text available
Temperate and tropical montane forests in Latin America represent a major natural resource at both regional and national levels for a number of reasons – biological, climatic, economic, cultural. Native tree species in these forests share conservation problems because of deforestation, habitat degradation, overall biodiversity loss and integrity of...
Article
Full-text available
Habitat fragmentation is one of the main threats to ecosystems integrity. In this study we assessed the influence of forest fragmentation on vegetation structure of populations of tree specie Legrandia concinna in south-central Chile. Occupancy pattern of Legrandia populations in remaining fragments of native forests was described, and relationship...
Article
Full-text available
Habitat fragmentation is one of the main threats to ecosystems integrity. In this study we assessed the influence of forest fragmentation on vegetation structure of populations of tree specie Legrandia concinna in south-central Chile. Occupancy pattern of Legrandia populations in remaining fragments of native forests was described, and relationship...

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Projects

Projects (5)
Project
evaluar la dependencia de la multifuncionalidad del paisaje respecto del contexto territorial, escala espacial, percepción social y los servicios ecosistémicos para la gestión territorial de paisajes urbano-lacustres
Project
This proposal aims at exploring key ecological and social aspects of the forest–water relationship in the temperate ecosystems of South Central Chile through a multi-scale approach that includes: (1) analyzing the spatial and temporal patterns of five hydrological functions subjected to forest cover changes at biome scale; (2) estimating the specific impacts of the variations in forest cover in runoff and evapotranspiration rates at catchment scale; (3) assessing social perceptions about the forest-water relationship at local scale and; (4) include the social aspect of the forest-water relation in terms of land planning. These goals are crucial to evaluate decision making on land planning to maintain and regulate the water-based ecosystem services provided by forests.
Project
The aim of this project is to develop and test a pest control system promoting the insectivorous bats activity in organic crops. Especifically: 1) To evaluate the response of insectivorous bats to the acoustic signals produced by ultrasonic lures. 2) To optimise and refine the acoustic signal which has a positive impact in the insectivorous bat activity. 3) To analyse, check and quantify the impact of the bat lures as a complementary method for pest control.