Nestor Ignacio Gasparri

Nestor Ignacio Gasparri
National University of Tucuman | UNT · Instituto de Ecología Regional (IER)

PhD

About

113
Publications
58,304
Reads
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3,511
Citations
Introduction
Nestor Ignacio Gasparri currently works at the Instituto de Ecología Regional (IER), CONICET-National University of Tucuman. Nestor does research in land use cover change and conservation. In particular, his main works are oriented to the dry chaco in Argentina and the deforestation impacts over the ecosystem services (especially carbon) provision
Additional affiliations
April 2005 - present
National University of Tucuman
Position
  • Research Assistant
March 2005 - present
National Scientific and Technical Research Council
Position
  • Research Assistant
March 2001 - March 2005
Secretaría de Ambiente de Desarrollo Sustentable. Argentina
Position
  • Technician
Description
  • Tareas de Inventario Forestal y Monitoreo de la deforestación aplicando técnicas de teledetección y Sistemas de Información Geográfica.
Education
March 2005 - May 2010
National University of Tucuman
Field of study
  • Biology
March 1992 - April 1999
Universidad Nacional de La Plata
Field of study
  • forestry

Publications

Publications (113)
Article
Full-text available
Forest loss in the tropics affects large areas, but whereas full forest conversions are routinely assessed, forest degradation patters remain often unclear. This is particularly so for the world’s tropical dry forests, where remote sensing of forest disturbances is challenging due to high canopy complexity, strong phenology and climate variability,...
Article
Full-text available
The landscape configuration of socio-ecological land systems results from the interaction between the environmental conditions (relatively homogeneous within ecoregions) and country-level management and land-use decisions. However, social, land-use and sustainability research disciplines often study each independently. We used Euclidean distance an...
Article
The quantification of carbon storage in vegetation biomass is a crucial factor in the estimation and mitigation of CO2 emissions. Globally, arid and semi-arid regions are considered an important carbon sink. However, they have received limited attention and, therefore, it should be a priority to develop tools to quantify biomass at the local and re...
Article
Agricultural expansion into subtropical and tropical forests causes major environmental damage, but its wider social impacts often remain hidden. Forest-dependent smallholders are particularly strongly impacted, as they crucially rely on forest resources, are typically poor, and often lack institutional support. Our goal was to assess forest-smallh...
Article
Full-text available
R������. Las parcelas forestales permanentes son áreas de muestreo donde se registran periódicamente la identidad, abundancia y tamaño de los árboles, para estudiar cómo cambian los bosques en relación con el clima, los disturbios naturales y los usos y manejos. Hasta hoy, los patrones de cambio observados con parcelas permanentes en la Argentina t...
Article
Full-text available
Forest degradation in the tropics is a widespread, yet poorly understood phenomenon. This is particularly true for tropical and subtropical dry forests, where a variety of disturbances, both natural and anthropogenic, affect forest canopies. Addressing forest degradation thus requires a spatially-explicit understanding of the causes of disturbances...
Article
Full-text available
Stem capacitance and water storage are known to play an important role in the water economy of trees by acting as an intermediate water source for transpiring leaves. The bark, in addition to be involved in protection and mechanical support of the trees, can also serve as a water reservoir. We examined the relationship between inner bark and sapwoo...
Technical Report
Full-text available
"En esta serie técnica se recopilan los aportes de diferentes grupos de gestores e investigadores en el marco del proyecto REDD+, con la finalidad de analizar las oportunidades y desafíos que presentaría integrar el bosque nativo y sus especies a la producción ganadera. También es interés de este trabajo, profundizar en la re-valorización del bosqu...
Article
Tropical dry forests harbor major carbon stocks but are disappearing rapidly across the globe as agriculture expands into them. Unfortunately, carbon emissions from deforestation in dry forests remain poorly understood as high spatial-temporal and vertical heterogeneity complicate biomass mapping. Here, we use a novel Gradient Boosted Regression fr...
Article
The Dry Chaco is a semi-arid ecoregion in South America that hosts one of the largest dry forests in the world, but expansion of dryland agriculture and cattle ranching led to gradual conversion of native vegetation to anthropogenic land cover. The potential impact of these newly established agricultural lands on the surrounding environment is of g...
Preprint
Agricultural expansion into tropical and subtropical forests often leads to major social-ecological trade-offs. Yet, despite ever-more detailed information on where deforestation occurs, how agriculture expands into forests remains unclear. Here, we developed and mapped a novel set of metrics that quantify agricultural frontier processes at unprece...
Article
Full-text available
To meet the global-human population increase, deforestation resulting from agriculture expansion threatens the ecological and social dimensions of subtropical and tropical forests. Here, we identified classes of agricultural frontiers in the Dry Chaco ecoregion based on land-use changes between 2000 and 2013, in which we performed interviews and qu...
Article
Full-text available
The different ways in which biodiversity is distributed on Earth have always intrigued ecologists, promoting constant research to elucidate the causes and mechanisms that guide their spatial patterns. Numerous hypotheses have been proposed to explain biodiversity across the world. In South American Subtropical Dry forests, a global deforestation ho...
Conference Paper
Full-text available
En esta presentación se sugieren una serie de relaciones de la ganadería con el almacenaje y flujo de carbono de los bosques nativos en Uruguay. Las mismas se hacen de manera cualitativa y es resultado de la experiencia adquirida por un numeroso grupo de trabajo constituido en el marco del proyecto REDD+ de Uruguay y el convenio realizado con el IN...
Article
Full-text available
Forests structure of palo santo (Gonopterodendron sarmientoi): Regional assessment for forest management and conservation in Argentine. Gonopterodendron sarmientoi is a threatened native tree of the Dry Chaco region in South America, adapted to semiarid conditions. However, the relationships among climatic and edaphic conditions and its forest stru...
Article
Full-text available
Anthropogenic activity leading to forest structural and functional changes needs specific ecological indicators and monitoring techniques. Since decades, forest structure, composition, biomass, and functioning have been studied with ground-based forest inventories. Nowadays, satellites survey the earth, producing imagery at different spatial and te...
Article
Full-text available
Los bosques de ribera se encuentran entre los ecosistemas más vulnerables, y para mantener los servicios que brindan se necesita su restauración ecológica. El objetivo principal de nuestro trabajo fue generar un mapa de zonas ribereñas a fin de identificar bosques, áreas transformadas y oportunidades para restaurar estos ecosistemas en Tucumán, Arg...
Article
Subtropical dry forests are among the largest and most threatened terrestrial biomes worldwide. In Argentina, the Native Forest Law (NFL) was passed in 2007 to regulate deforestation by mandating the provincial zonation of forested areas, while the erection of fences has been an increasingly common mechanism of private-land control reinforcement in...
Article
In dry woodland regions, silvopastures have emerged as a promising option to balance cattle production, carbon storage and biodiversity. However, one of the major challenges in these systems, particularly when implemented in a matrix of natural vegetation, is the preservation of tree populations in the face of management actions implemented by ranc...
Article
Full-text available
Por su continuidad espacial y su relativa homogeneidad ecológica y biofísica, las ecorregiones son un nivel de organización apropiado para discutir y planificar iniciativas de conservación del ambiente a escala regional y nacional. Las interacciones complejas entre las características ecológicas de las ecorregiones, los cambios socioeconómicos loca...
Data
Tabla A2. Puntaje de cada presión (de 0 a 100, con valores más altos reflejando una mayor incidencia de la misma) en las ecorregiones terrestres de Argentina en base a su jerarquización sobre cuatro dimensiones.
Article
Full-text available
Los bosques nativos tienen una gran relevancia económica, ecológica y social para el país. El proyecto REDD+ en Uruguay contribuye a la búsqueda de oportunidades para mejorar la gestión de los bosques nativos y su integración con actividades productivas.
Article
Disparity between the knowledge produced and knowledge required to address complex environmental challenges, such as biodiversity conservation and climate adaptation, continues to grow. Systems thinking under the Open Standards for Conservation framework can help close this gap by facilitating interdisciplinary engagement, advancing conversations o...
Article
Impacts of cattle production vary among different production systems, but data on their distribution is scarce for most world regions. In this work, we combine datasets on cattle vaccination locations and land cover in a regression framework to define and map major cattle production systems in the Argentinean Dry Chaco. We also explore how cattle o...
Chapter
The Dry Chaco is mostly known as a forested ecosystem. However it includes natural grasslands, savannas, scrublands, and wetlands. With one of the highest global deforestation rates in the last two decades and only 12% of the area protected, the concern about land-use change in this ecoregion has raised exponentially; but conservation initiatives d...
Article
Full-text available
Tropical dry forests and savannas harbour unique biodiversity and provide critical ES, yet they are under severe pressure globally. We need to improve our understanding of how and when this pressure provokes tipping points in biodiversity and the associated social-ecological systems. We propose an approach to investigate how drivers leading to natu...
Article
The increasing global interconnectivity influencing land system change brings with it new challenges for land-system science. We evaluate whether recent land-system science (LSS) research into telecoupling provides a basis to set normative goals or priorities for addressing sustainability in coupled human-natural systems. We summarize the challenge...
Article
Full-text available
En las pasadas cuatro décadas, las teorías de expansión de las fronteras han sido configuradas principalmente por estudios sobre colonización orientada por el Estado con base en pequeños propietarios. Sin embargo, actualmente, las fronteras agrícolas van quedando cada vez más bajo el control de la agricultura empresarial capitalizada, que opera con...
Article
Agricultural expansion and intensification drive the conversion of natural areas worldwide. Scenarios are powerful tools to explore possible future changes in agricultural land use, how these may affect the environment, and how policies may influence land-use patterns. Focusing on Argentina’s prime agricultural areas, the Pampas, Espinal and Chaco,...
Conference Paper
Full-text available
Los sistemas silvopastoriles se han propuesto como alternativas productivas que pueden mitigar las emisiones de gases de efecto invernadero mediante el secuestro de carbono. En el Chaco Seco Argentino, se realizan en bosques nativos y actualmente existen 14 millones de hectáreas que podrían tener este uso debido al reciente ordenamiento de bosques....
Chapter
Full-text available
Los socioecosistemas de la Puna en contexto nacional y global ä Resumen-El funcionamiento socioecológico de la Puna argentina está fuertemente condicionado por sus interacciones con otras regiones. El principal motor de esas interac-ciones son los humanos, que llegaron a la Puna hace aproximadamente 11.000 años. Hace 4.000 años los ecosistemas pune...
Conference Paper
Full-text available
Silvopastoril systems in Argentinean Dry Chaco are implemented in native woodland disturbing shrub layer to plant. These have been proposed as systems that maintain forest ecosystem services such as carbon sequestration. In recent years, they have increased in area and there are still 14 million of hectares in the region that allow silvopastoral pr...
Presentation
Full-text available
Se remidieron parcelas forestales en bosque nativo en la región Chaco Seco argentino, durante el período 2007-2017. Se determinó el incremento periódico anual (IPA) para árboles >20 cm de DAP que estuvieron marcados en terreno al inicio y final del período. Se reporta el IPA para 16 especies de árboles nativos con importancia económica, de las cual...
Article
Tropical dry forests and savannas provide important ecosystem services and harbor high biodiversity, yet are globally under pressure from land-use change. Mapping changes in the condition of dry forests and savannas is therefore critical. This can be challenging given that these ecosystems are characterized by continuous gradients of tree and shrub...
Article
Full-text available
ABSTRACT. Structure and dynamics of palo santo forests in the Dry Chaco. Knowledge on the structure and dynamics of Bulnesia sarmientoi ("palo santo") populations is necessary for forest management aimed at the conservation and high-quality timber production by this species and the preservation of the ecosystem services of its forests. We character...
Article
Full-text available
El conocimiento de la estructura y la dinámica de las poblaciones de Bulnesia sarmientoi ("palo santo") es necesario para una gestión forestal capaz de conservar la especie, asegurar la producción maderera de alta calidad y preservar los servicios ecosistémicos que brindan los bosques donde se encuentra. Se caracterizó la estructura y la dinámica f...
Article
Full-text available
Phenology is a key ecosystem process that reflects climate–vegetation functioning, and is an indicator of global environmental changes. Recently, it has been suggested that land-use change and timber extraction promote differences in forest phenology. We use remote-sensing data to describe regional leaf phenological patterns in combination with fie...
Chapter
Full-text available
Silvopastoral systems (SPS) provide a wide range of non-provisioning ecosystem services including carbon (C) sequestration. Well-managed SPS outperform both grasslands/pastures and forests in terms of C by increasing soil and biomass C storage. In this Chapter, C sequestration information from native forests and tree plantations under silvopastoral...
Article
Agricultural expansion and intensification in South America's dry forests and grasslands increase agricultural production, but also result in major environmental trade-offs. The Pampas and Chaco regions of Argentina have been global hotspots of agricultural land-use change since the 2000s, yet our understanding of what drives the spatial patterns o...
Article
Full-text available
ContextKnowing which factors determine the spread of plant invaders is a relevant issue in global ecology. Cultural landscapes both influence and are affected by exotic species. Although bioclimatic boundaries, seed sources and landscape configuration all control the invasion process, they have been mostly studied separately and independently from...
Article
Theories of frontier expansion in the last four decades have been mostly shaped by studies of state-driven smallholder colonization. Modern-day agricultural frontiers, however, are increasingly driven by capitalized corporate agriculture operating with little direct government intervention. The expansion of contemporary frontiers has been explained...
Article
This article reviews the current status, trends and challenges of land system science in Latin America. We highlight the advances in the conceptualization, analysis and monitoring of land systems. These advances shift from a focus on the relationships between forests and other land uses to include a greater diversity of land cover and land-use type...
Article
South America’s tropical dry forests and savannas are under increasing pressure from agricultural expansion. Cattle ranching and soybean production both drive these forest losses, but their relative importance remains unclear. Also unclear is how soybean expansion elsewhere affects deforestation via pushing cattle ranching to deforestation frontier...
Article
Full-text available
Rising global demand for agricultural products results in agricultural expansion and intensification, with substantial environmental trade-offs. The South American Dry Chaco contains some of the fastest expanding agricultural frontiers worldwide, and includes diverse forms of land management, mainly associated with different land tenure regimes; wh...
Article
The Dry Chaco is one of the most active agriculture frontiers, which imposes trade-offs and synergies among ecosystem services (ES). Most studies analyze real or potential supply of ES associated to land use change; but they usually neglect ES social demands. Interviews to inhabitants of small urban centers in the Argentinean Dry Chaco revealed tha...
Article
Full-text available
The subtropical dry forests are experiencing rapid clearing in the southamerican Great Chaco region, mainly for soybean production in Argentina. This is causing biodiversity loss and soil salinization. This forests are unique for the floristic richness and the dense forest cover in a region characterized by semiarid climatic conditions. The authors...
Article
Carbon emissions from land-use changes in tropical dry forest systems are poorly understood, although they are likely globally significant. The South American Chaco has recently emerged as a hot spot of agricultural expansion and intensification, as cattle ranching and soybean cultivation expand into forests, and as soybean cultivation replaces gra...
Poster
Full-text available
Una de las medidas de mitigación del cambio climático más fomentadas es el secuestro de carbono por vegetación. Esto depende de la velocidad de captación y transformación del carbono en biomasa, velocidad de liberación a través de la respiración y estabilidad del stock ante disturbios. La diversidad forestal influye sobre estos factores, cuya efici...
Technical Report
Full-text available
La información presentada en este reporte fue realizada a partir de la información del RENSPA del SENASA en el marco de las colaboraciones entre el Instituto de Investigación Animal del Chaco Semiárido (IIACS-CIAP-INTA) y el Instituto de Ecología Regional (IER-UNT-CONICET). Los mapas presentados en este reporte en su formato de cobertura raster pue...
Chapter
The Dry Chaco in Argentina is among the most dynamic deforestation frontiers in South America. Land-use competition in this region today mainly relates to trade-offs between on the one hand ecosystem services important for local communities (e.g., fuelwood, forage, hunting, subsistence farming) and on the other side global demands for both agricult...
Chapter
Full-text available
This introductory chapter explores the notion of ‘distal drivers’ in land use competition. Research has moved beyond proximate causes of land cover and land use change to focus on the underlying drivers of these dynamics. We discuss the framework of telecoupling within human–environment systems as a first step to come to terms with the increasingly...
Presentation
Full-text available
Existe consenso de que el stock de biomasa aérea de un bosque es un indicador del nivel de degradación que presenta. En Argentina, los factores impulsores de la variabilidad en el stock de biomasa del bosque seco son: la tala selectiva, ganadería extensiva, extracción de leña y carbón e incendios antrópicos. Como consecuencia de estas alteraciones,...
Book
This introductory chapter explores the notion of ‘distal drivers’ in land use competition. Research has moved beyond proximate causes of land cover and land use change to focus on the underlying drivers of these dynamics. We discuss the framework of telecoupling within human–environment systems as a first step to come to terms with the increasingly...
Article
Full-text available
Agriculture expansion oriented to global market has changed the relation between population and deforestation in South America. Actually, the population dynamic in an agricultural frontier turned into a consequence of deforestation (rather than the cause). For Dry Chaco of Argentina during the period 1991–2001, we explore the impacts of deforestati...
Poster
Full-text available
Estudiamos la relación espacio-temporal entre la composición de aves y la fenología y estructura de los bosques del Chaco Seco.