Pablo L. PeriInstituto Nacional de Tecnología Agropecuaria | inta
Pablo L. Peri
PhD
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201
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4,318
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Introduction
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February 1993 - present
January 1993 - present
Publications
Publications (201)
Soil nitrogen (SN) and soil phosphorus (SP) contents support several ecosystem services and define the forest type distribution at local scale in Southern Patagonia. The quantification of nutrients during forest surveys requires soil samplings and estimations that are costly and difficult to measure. For this, predictive models of soil nutrients ar...
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El cálculo de la HC de un producto comprende todas las actividades o eslabones de un proceso que conforman el ciclo de vida de ese producto, desde las materias primas utilizadas hasta el desecho final como residuo. El cálculo de la HC es uno de los primeros pasos hacia el compromiso y responsabilidad ambiental de las empresas u organizaciones. La H...
Este trabajo tiene por objetivo ajustar una función predictora regional del volumen total de palo santo (Gonopterodendron sarmientoi) por unidad de superficie para tres tipos de bosques con presencia de palo santo, usando como variables regresoras el área
basal, la densidad y la altura dominante de palo santo
The general objective of this study was to provide information regarding the productivity and site quality of Palo Santo forests in
their Argentinean distribution area in order to establish guidelines for sustainable management and use. We used data taken from 482
plots as part of national, regional and local forest inventories in northern Argent...
Increasing CO2 air concentration may affect wettability, anatomy and ultra-structure of leaves of Patagonian forest species, evergreen and deciduous plants potentially responding differently to such CO2 increases. In this study, we analysed the wettability, anatomy and ultra-structure of leaves of Nothofagus antarctica (deciduous) and N. betuloides...
Soil microorganisms contribute to soil carbon storage, soil respiration and nutrient cycling. In south Patagonia, there are scarce studies on carbon (C) and nitrogen (N) in soil microbial biomass (MB). The aim of this work was to evaluate C and N content in soil MB, and soil microbial respiration according to different sites and forest uses: Nothof...
Los Bosques Andino Patagónicos proveen una amplia gama
de servicios ecosistémicos que incluyen servicios de provisión,
regulación, soporte y culturales. Estos bosques han sido utili
-
zados por los habitantes originales de la Patagonia, pero con
la llegada de nuevos pobladores a la región a finales del siglo
XIX su utilización fue creciendo con el...
Para que un sistema productivo sea considerado sustentable, este debe ser factible de satisfacer sus necesidades actuales, sin comprometer la posibilidad de satisfacer las necesidades de las generaciones futuras. En la actualidad, existen distintos tipos de herramientas que se pueden implementar a fin de poder determinar si un sistema es sustentabl...
One of the most fundamental questions in ecology is how many species inhabit the Earth. However, due to massive logistical and financial challenges and taxonomic difficulties connected to the species concept definition, the global numbers of species, including those of important and well-studied life forms such as trees, still remain largely unknow...
Watershed definition is fundamental for integrated management of water
resources, considering the social, productive and environmental demands. The
watershed spatial delimitation is essential to understand eco-hydrological processes
in the territory and management. The objective of this work was to delineate and code
the hydrographic regions of Sou...
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...
Conocer cómo es la biología de estos suelos en cuanto a carbono (C) y nitrógeno (N) en los microorganismos da idea de la descomposición de la materia orgánica y por ende del ciclado de los nutrientes y puede servir de base para el entendimiento del funcionamiento de los sistemas naturales. El objetivo del presente trabajo es evaluar el contenido de...
Evaluación de los microorganismos del suelo en un pastizal de la Estepa Magallánica Seca ante cambios en nutrientes y régimen hídrico Gagaglione V., Toledo S., Gonzalez Polo M., Birgi J., Peri P. Introducción En los ecosistemas terrestres, la descomposición de la materia orgánica es un importante proceso en el ciclo de carbono (C) mediado por micro...
In Southern Patagonia, a long-term monitoring network has been established to assess
bio-indicators as an early warning of environmental changes due to climate change and human
activities. Soil organic carbon (SOC) content in rangelands provides a range of important ecosystem
services and supports the capacity of the land to sustain plant and anima...
Nutrient resorption is crucial for mineral element conservation and efficiency of forest species, but knowledge on its significance and the mechanisms involved is still limited for most species and habitats. Focussing on the harsh conditions for plant growth and survival of southern Patagonia, a field study for comparing the rate of foliar resorpti...
Los bosques de lenga (Nothofagus pumilio) constituyen la masa forestal de mayor importancia económica en superficie y volumen del sur de Argentina y Chile, con una amplia distribución latitudinal desde Neuquén (35º 35' S) hasta Tierra del Fuego (55º S). La lenga es una especie decidua, que ocupa generalmente el límite altitudinal de la vegetación a...
La forestación y parquización de espacios verdes en una ciudad anclada en la estepa Patagónica tiene por finalidad principal la de mejorar la calidad de vida de sus
habitantes. También la finalidad de la forestación en la Patagonia comprende la instalación de cortinas cortaviento, la plantación en macizos y el arbolado urbano. Es
decir, funciones q...
Fine fruits as raspberry and gooseberries represent the second production with the largest area cultivated in Santa Cruz province (Argentina), and this activity is usually carried out by family farmers in outdoor conditions.
The availability of information about productive, morphologic, phenological and quality aspects of these crops in south Patag...
Nothofagus antarctica, is the most important species of the silvopastoral systems of southern Patagonia. However, there is limited information on the ecophysiological response mechanisms of seedlings for survival under different resource availability regimes, and whether such processes may differ between provenances. In this study, we evaluated the...
Defining the optimal placement of areas for biodiversity conservation in developing nations remains a significant challenge. Our best methods for spatially targeting potential locations for biodiversity conservation rely heavily on extensive georeferenced species observation data which is often incomplete or lacking in developing nations. One possi...
Soils hold the largest pool of organic carbon (C) on Earth; yet, soil organic carbon (SOC) reservoirs are not well represented in climate change mitigation strategies because our database for ecosystems where human impacts are minimal is still fragmentary. Here, we provide a tool for generating a global baseline of SOC stocks. We used partial least...
The conversion of native vegetation to tree plantation (afforestation) implies a drastic change in life forms and as a consequence, changes in the microenvironmental conditions, and the quantity and quality of organic matter entering the soil. This could affect soil microbial communities and the processes catalyzed by them. In Patagonia, afforestat...
Variable retention is an alternative harvesting system that could be implemented instead the more traditional ones (e.g. shelterwood cut for N. pumilio forests in southern Patagonia), because it was designed not only for timber purpose, but also for conservation. However, the impact of different retention types on diversity is not clear, e.g. steno...
Human societies depend on an Earth system that operates within a constrained range of nutrient availability, yet the recent trajectory of terrestrial nitrogen (N) availability is uncertain. Examining patterns of foliar N concentrations and isotope ratios (δ15N) from more than 43,000 samples acquired over 37 years, here we show that foliar N concent...
Decomposition of fine roots is a fundamental ecosystem process that relates to carbon (C) and nutrient cycling in terrestrial ecosystems. However, this important ecosystem process has been hardly studied in Patagonian ecosystems. The aim of this work was to study root decomposition and nutrient release from fine roots of grasses and trees (Nothofag...
Las producciones de fruta fina son el segundo cultivo con mayor superficie implantada
en Santa Cruz y constituyen una alternativa atractiva por su alto valor económico y
las posibilidades de valor agregado que brindan. Actualmente no existen trabajos que
evalúen el rendimiento de las principales especies tanto al aire libre como bajo cubierta,
por...
Fire is an important disturbance affecting Nothofagus pumilio (lenga) forests in Chubut and Santa Cruz provinces of Patagonia, Argentina. Depending on the forest structure and the level of fire severity, the resulting stands could substantially differ from the original. In this study, we evaluated post-fire effects on soil and vegetation conditions...
El fuego es un disturbio importante en bosques de lenga de Chubut y Santa Cruz, en la Patagonia argentina. Según del tipo de bosque y la severidad del fuego, el sistema resultante puede diferir en gran medida respecto del original. En este trabajo se evaluaron condiciones post-fuego (vegetación y suelo) que afectarían el restablecimiento de Nothofa...
Key message: Soil texture and temperature-related variables were the variables that most contributed toNothofagus antarcticaforest height in southern Patagonia. This information may be useful for improving forest management, for instance related to the establishment of silvopastoral systems or selection of suitable sites for forest reforestation in...
Aim of the study: To analyse the effectiveness of thinning on tree growth, forest structure and microclimatic variables along seven years after cuttings in a secondary Nothofagus antarctica forest in Southern Patagonia.
Area of study: Five hectares of homogeneous stand of secondary forests (54º15’46” SL, 66º59’41” WL) in Tierra del Fuego, Argentin...
This second edition of the book contains 12 chapters, which aims to: (1) to update existing chapters with the tremendous advances in temperate agroforestry knowledge that have come to light in the last 20 years; and (2) if possible, to add new global regional examples of temperate agroforestry. Several changes have been made to the second edition....
The extensive bovine systems of Tierra del Fuego incorporate little management technology so they have low production levels per unit area. However, there are technologies available such as grassland assessment, vegetation type separation, and rotational grazing system that would allow better grazing management. In the present study, a management p...
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...
Resumen Los sistemas bovinos extensivos de Tierra del Fuego incorporan escasa tecnología de manejo por lo que poseen bajos niveles de producción por unidad de superficie. No obstante, hoy existen tecnologías disponibles como la evaluación de pastizales, la separación de ambientes y el pastoreo rotativo que permitirían un mejor manejo del pastoreo....
Mast seeding is characteristic of many long-lived tree species and widely proposed as a mechanism to reduce seed predation. However, whether the efficiency of this reproductive response may vary depending on type of seed predator (e.g., invertebrates vs. vertebrates) or depending on local characteristics, remains seldom explored. We evaluated for 8...
Nutrient resorption understood as the“migration” of nutrients from leaves prior to abscission towards other tissues or for storage has been suggested to be a key component of nutrient conservation in deciduous forests pecies. Native forests in southern Argentinean Patagonia cover approximately 1.2 million ha, corresponding more than 95% of these fo...
Introduction: Huemul (Hippocamelus bisulcus Molina) is the most threatened flag species of Southern Patagonia, where conservation efforts were not effective to avoid the retraction of its distribution area. Habitat quality modeling can assist to design better management strategies for regional conservation planning. The objective was to elaborate o...
The ñire forests (Nothofagus antarctica) occupy approximately 190 mil ha in Tierra del Fuego, and have been used since colo-nization for firewood and pole extraction, as well as livestock protection and foraging. As a consequence of extensive and without planning use, these currently present a great variety of forest structures, re-generation degre...
Agroforestry systems (AS) has achieved significant development in South America during the last decades. Here, we evaluated how different socio-political factors (e.g., source of funding, institutional priorities and international cooperation) influence the production of scientific research regarding AS. We performed a literature review by assessin...
In Southern Patagonia, most of the land ranging from the mountains to the sea in contrasting environmental conditions is devoted to extensive sheep farming. Existing estimations indicate that in ecosystems under livestock use, around 85% of the nitrogen (N) returning to the soil is through animal feces and urine. However, there is a lack of informa...
In Santa Cruz province, nearly 2.83 million hectares are occupied by a shrub steppe dominated by Mulguraea tridens (locally called matorral de mata negra), where the main activity is extensive sheep farming. This paper focuses on the effects of management practices such as removal in strips of the above ground shrub layer. The treatments were the c...
El huemul (Hippocamelus bisulcus) es un cérvido endémico de Argentina y Chile, presentando un estado vulnerable de conservación, llegando en muchas áreas a un peligro de extinción. Los mapas de hábitat son una útil herramienta para la determinación de los requerimientos ecosistémicos de las especies, y para la toma de decisiones en manejo y conserv...
Southern Patagonia’s landscape hosts several semi-natural habitats, traditionally used for sheep production, such as Mulguraea tridens and Lepidophyllum cupressiforme scrublands. Mulguraea scrublands are managed via mechanical shredding to remove shrubs and increase grass availability, alternating with structural-retention strips. We analyzed the i...
In Santa Cruz province, nearly 2.83 million hectares are occupied by a shrub steppe dominated by Mulguraea tridens (locally called matorral de mata negra), where the main activity is extensive sheep farming. This paper focuses on the effects of management practices such as removal in strips of the above ground shrub layer. The treatments were the c...
La productividad primaria neta (PPN) terrestre cuantifica la cantidad de energía solar convertida en biomasa (mediante la fotosíntesis) por unidad de tiempo y espacio. Es una variable clave para comprender múltiples procesos ecosistémicos y el intercambio de carbono entre la biota y la atmósfera. El objetivo de este trabajo fue analizar la dinámica...
Tierra del Fuego alberga extensas áreas silvestres que continúan siendo incorporadas dentro de un manejo más intensivo. Así, por ejemplo, la decidua Nothofagus antarctica (ñire) contiene ensambles de especies únicos, pero se encuentran poco representada dentro de las áreas protegidas. Por ello, el uso actual de los sistemas silvopastoriles en los b...
Un gran porcentaje de los bosques de Nothofagus antarctica son utilizados como sistemas silvopastoriles, en donde el ganado se alimenta del estrato herbáceo que crece en el sotobosque. Las raíces finas representan un importante aporte al ciclo de nutrientes en el sistema, lo cual repercute en el ciclo de muchos nutrientes y en la absorción y libera...
It is difficult to map and quantify biodiversity at landscape level in areas with low data availability, despite demand from decision-makers. We propose a methodology to determine potential biodiversity pattern using habitat suitability maps of the understory plant species with highest cover and occurrence frequency in the three different forests t...
The ecological, social, institutional and political dimensions of environmental problems encompass spatial and temporal scales that exceed the majority of scientific research projects. An alternative that has increased over time throughout the world is the Long-Term Ecological Research (LTER) or Long-Term Socio-Ecological Research (LTSER) approach,...
Las dimensiones ecológicas, sociales, institucionales y políticas de los problemas ambientales abarcan escalas espaciales y temporales que exceden a la mayoría de las investigaciones científicas. Una alternativa que crece con el tiempo a nivel mundial es la aproximación Long-Term Ecological Research (LTER) o Long-Term Socio-Ecological Research (LTS...
In Patagonia, silvopastoral systems in Nothofagus antarctica (ñire) forest has become an economically, ecologically and socially productive land-use system. Patagonian experience with silvopastoral systems in the past 15 years is reviewed in this chapter. The productivity and nutritive value (crude protein content and dry matter, DM, digestibility)...
This multi-authored volume contains peer-reviewed chapters from leading
researchers and professionals in silvopastoral systems topic in the subtropical
and temperate zones of South America (Argentina, Chile and
South Brazil). It is a compendium of original research articles, case studies,
and regional overviews and summarizes the current state of k...
State-transition models (S&TM) provide a powerful decision-analytic tool because they describe ecosystemdynamics in the context of landscape ecology, but also elucidate unwanted (sometimes irreversible) transition changes between states due to natural and human disturbances. The interest in this tool has increased in productive systems (e.g., fores...
Grasslands comprise 85% of Southern Patagonia land area and play a critical role in the global carbon cycle. We evaluated seasonal dynamics to identify differences in soil respiration rates between contrasting grasslands across a climate gradient (rainfall), long term grazing intensity (moderate and high stocking rates) and land uses (silvopastoral...
SUMMARY Harvesting with variable retention (VR) applied in Nothofagus forests combines two types of retention: patches of original forest (aggregates) and single isolated homogeneously distributed trees (dispersed). This study assesses the assumption that VR maintains mature forests conditions after harvesting by synthesizing 605 individual results...
We evaluated the annual litterfall and nutrients
return in primary forests of Nothofagus antarctica growing
at three different site classes (SC) (III, IV and V) and
compared two of these forests with adjacent stands under
silvopastoral use (thinned 40 years ago), in Patagonia,
Argentina. Traps were installed in each stand and sampled
monthly during...
Tree growth is one of the main variables needed for forest management planning. The use of simple models containing traditional equations to describe tree growth is common. However, equations that incorporate different factors (e.g. site quality of the stands, crown classes of the trees, silvicultural treatments) may improve their accuracy in a wid...