15 research outputs found
Especies de interés foresto industrial en Salta y Jujuy. Resultados de parcelas experimentales en INTA Yuto
No full textEsta publicación aporta información técnica valiosa para la toma de decisiones en la selección de especies, la elección del marco de plantación y el diseño de estrategias de manejo forestal. Sus resultados contribuyen tanto a la producción maderera como a la restauración ecológica de paisajes, fortaleciendo así el desarrollo sustentable del sector forestal en la región.EEA YutoFil: Speranza, Flavio Cesar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; ArgentinaFil: Bonillo, Cesar Santiago Andre. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; ArgentinaFil: Balducci, Ezequiel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; ArgentinaFil: Vale, Natalia Jael. Universidad Nacional de Jujuy. Tecnicatura Universitaria Forestal; ArgentinaFil: Ortiz, Lucio Fabian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; Argentin
Informe campaña MAÍZ 2020 : Valle de Lerma / Salta
No full textLa producción de maíz ha cobrado importancia en el Valle de Lerma como cultivo de rotación de los cultivos de verano más importantes de la zona: tabaco y poroto, lo cual sumado a la necesidad de intensificar la producción por unidad de superficie y la integración con las actividades pecuarias intensivas (vacas, cerdo y aves), constituye un importante sistema de producción para los valles templados de Salta y Jujuy.Fil: Valdez Naval, Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: Failde, Viviana Norma. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: De Simone, Mario Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinaFil: Renfijes, Carlos Rolando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; ArgentinFil: Speranza, Flavio Cesar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; Argentina
Variabilidad paleoclimática y cambios paleoambientales en la región Chaqueña semiárida Argentina
No full textEls estudis paleoclimàtics i paleoambientals de l'holocè proporcionen informació rellevant sobre les tendències climàtiques a llarg termini necessàries per generar i provar hipòtesis sobre patrons i models climàtics, i per entendre els canvis ambientals recents. Si bé hi ha un nombre creixent d'aquests tipus d'estudis a Amèrica de Sud, encara hi ha extenses regions que no compten amb estudis detallats i d'alta resolució, tal com succeeix en el Chaco semiàrid. El present treball constitueix una aportació significativa per reduir la bretxa espacial d'informació sobre la variabilitat paleoclimàtica, la dinàmica del paisatge, i la transformació paleoambiental, a diferents escales espacials i temporals durant els últims segles a la regió semiàrida del Chaco argentí, mitjançant la vinculació i articulació d'una quantitat i diversitat significatives d'indicadors. Es van dur a terme estudis fluviomorfològics, geomorfològics, i seqüències sedimentàries mineralògiques i texturals de paleolits a la conca baixa del riu Bermejo, principal modelador del paisatge de la plana chaqueña semiàrida; anàlisis de registres multiparamètrics sedimentològics d'alta resolució (litologia, geoquímica, mineralogia) i palinològics de sediments lacustres de la Laguna Yema; construcció i anàlisis de cronologies de gruixos d'anells de l'espècie arbòria Schinopsis lorentzii, situats en un gradient latitudinal (Nord-Sud) a la regió chaqueña semiàrida d'Argentina i, complementàriament, es van emprar bases de dades d'estacions meteorològiques i hidrométriques de l'àrea d'estudi.
Els nostres resultats i interpretacions constitueixen eines per ser emprades en la gestió integrada de recursos hídrics a la regió chaqueña semiàrida, on la deficiència en la disponibilitat d'aigua per la producció i consum humà i les inundacions són unes de les principals amenaces de la regió. Addicionalment, el nostre treball constitueix una entrada per a la gestió de l'ordenament ambiental i productiu del territori, on l'avanç de la frontera agropecuària per al desenvolupament de cultius extensius és el principal fenomen de canvi en la cobertura de terra, sent la seva sostenibilitat altament depenent de les variacions i estacionalitat climàtica.Los estudios paleoclimáticos y paleoambientales del holoceno proporcionan información relevante sobre las tendencias climáticas a largo plazo necesarias para generar y probar hipótesis sobre patrones y modelos climáticos y entender los cambios ambientales recientes. Si bien hay un número creciente de este tipo de estudios en América del Sur, todavía existen extensas regiones que no cuentan con estudios detallados y de alta resolución, tal como sucede en el Chaco semiárido. El presente trabajo constituye un aporte significativo para reducir la brecha espacial de información de la variabilidad paleoclimática, la dinámica del paisaje y la transformación paleoambiental, a distintas escalas espaciales y temporales, durante los últimos siglos en la región semiárida del Chaco argentino, mediante la vinculación y articulación de una significativa cantidad y diversidad de indicadores. Se llevaron a cabo estudios fluviomorfológicos, geomorfológicos y secuencias sedimentarias mineralógicas y texturales de paleocauces en la cuenca baja del río Bermejo, principal modelador del paisaje de la llanura chaqueña semiárida; análisis de registros multiparamétricos sedimentológicos de alta resolución (litología, geoquímica, mineralogía) y palinológicos de sedimentos lacustres de Laguna Yema; construcción y análisis de cronologías de ancho de anillos de la especie arbórea Schinopsis lorentzii, ubicados en un gradiente latitudinal (Norte-Sur) en la región chaqueña semiárida de Argentina y, complementariamente, se emplearon bases de datos de estaciones meteorológicas e hidrométricas dispuestas en el área de estudio.
Nuestros resultados e interpretaciones constituyen herramientas para ser empleadas en la gestión integrada de recursos hídricos en la región chaqueña semiárida, en donde la deficiencia en la disponibilidad de agua para la producción y consumo humano y las inundaciones son unas de las principales amenazas de la región. Adicionalmente, nuestro trabajo constituye un insumo para la gestión del ordenamiento ambiental y productivo del territorio, en donde el avance de la frontera agropecuaria para el desarrollo de cultivos extensivos es el principal fenómeno de cambio en la cobertura del suelo, siendo su sustentabilidad altamente dependiente de las variaciones y estacionalidad climática.Paleoclimatic and paleoenvironmental studies of the Holocene provide relevant information regarding climatic trends in the long-term, necessaries to generate and test hypothesis on climatic patterns and models, as well as understanding recent environmental changes. While an increasing number of these type of studies are being developed in South America, there are still large regions that do not have detailed and high resolution studies, as in the case of the semi-arid Chaco. This work constitutes a significant contribution in order to reduce the spatial information gap regarding paleoclimatic variability, landscape dynamics, and paleoenvironmental transformations, at different spatial and temporal scales, during the last centuries in the semi-arid region of Argentinian Chaco, through the linkage and articulation of a significant amount and diversity of indicators. A series of studies were conducted, including fluvialmorphological, geomorphological, and textural and mineralogical sedimentary sequences in the lower basin of the Bermejo River, the main landscape modeler of the semi-arid plains in Chaco; analysis of multi-parametric sedimentological records of high-resolution (lithology, geochemistry, mineralogy) and palynological from lake sediments in Laguna Yema; construction and analysis of tree-ring width chronologies of Schinopsis lorentzii, mainly located in an altitudinal gradient (North-South) of the semi-arid Chaco region in Argentina and, as a complement, databases from meteorological and hydrometric stations arranged in the study are were also consulted.
Our results and interpretations constitute tools to be employed in the integrated management of hydric resources in the semi-arid Chaco, where deficiency in water availability for production and human consumption, as well as floods, are one of the main threats in the region. In addition to that, our investigation constitutes an input for the environmental and productive management of the territory, where the advance of the agricultural border for the development of extensive crops is the main change phenomenon in soil coverage, with a sustainability highly dependent of climatic variations and seasonality.Universitat Autònoma de Barcelona. Programa de Doctorat en Ecologia Terrestr
Drivers and spatial modelling of soil organic carbon in Argentinian subtropical forests: path towards sustainable management and climate mitigation
No full textTropical and Subtropical Moist Broadleaf Forests (TSMF) can constitute important carbon stocks essential for nature-based solutions (NBS) that contribute not only to global warming mitigation efforts but also to multiple human well-being objectives and biodiversity benefits. However, the carbon stock potential of forest soils has not yet been sufficiently studied and valued, although at least a quarter of the world’s soil organic carbon (SOC) stocks have already been lost. The objectives of this work were: 1) to quantify the SOC stock in the existing TSMF in northwestern Argentina (called Yungas ecoregion); 2) to explore and identify the main drivers defining the SOC stock: 3) to model and map the SOC stock in the ecoregion. Subtropical rainforest soils in Argentina store about 298,090 Gg of SOC for an area of 35,409 km2. Converting forested areas to agriculture can reduce the SOC by up to 60 %. This reserve could be increased through active carbon sequestration mechanisms. Stand density, sand content and elevation are the main drivers of SOC in the ecoregion. Understanding how these factors influence the distribution of SOC can help assist to design more sustainable land-use practices, with the aim of promoting and preserving its SOC storage. The generated information and spatial models thus constitute a scientific basis for mitigation policies, where NBS could be fundamental implementation strategies with multiple co-benefits.EEA YutoFil: Manrique, Silvana M. Universidad de Alcalá. Departamento de Geología, Geografía y Medio Ambiente; EspañaFil: Gaitan, Juan José. Universidad Nacional de Luján; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Balducci, Ezequiel Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; Argentina.Fil: Speranza, Flavio Cesar. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; Argentina.Fil: Blundo, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología Regional; Argentina.Fil: Blundo, Cecilia. Universidad Nacional de Tucumán. Instituto de Ecología Regional; Argentina.Fil: Gasparri, Ignacio. Universidad Nacional de Tucumán. Instituto de Ecología Regional; Argentina.Fil: Gasparri, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ecología Regional; Argentina.Fil: Zavala, Miguel A. Universidad de Alcalá. Departamento de Ciencias de la Vida. Grupo de Restauración y Ecología Forestal (FORECO); España.Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Eficiencia en el uso del nitrógeno y agua en caña de azúcar en zonas de manejo homogéneas
No full textTesis para obtener el grado de Magister Scientiae en Producción Vegetal, de la Universidad Nacional del Nordeste, en 2021El rendimiento de la caña de azúcar se encuentra fuertemente asociado a la disponibilidad de agua y nitrógeno (N), las cuales presentan grandes variaciones espacio-temporales a nivel de lote. Estas variaciones generan diferentes eficiencias de captura y uso del N y agua, lo que se traduce en un menor aprovechamiento de los recursos disponibles y la imposibilidad de alcanzar rendimientos potenciales. El objetivo de esta tesis fue evaluar en caña de azúcar la productividad, eficiencia de uso de agua (EUA), de N (EUN) y sus componentes en zonas de manejo homogéneas. En base a imágenes satelitales y a muestreos de suelo in-situ, durante los ciclos agrícolas 2015/16 y 2017/18 se caracterizó un lote en dos zonas homogéneas de manejo: zona 1 presentó textura franco-arenosa, menor valor del índice de vegetación de diferencia normalizada (NDVI), materia orgánica (MO) y retención de humedad; y zona 2 con textura franco-arcillosa, de mayor NDVI, MO y retención de humedad. Durante el ciclo 2015/16 se analizó el efecto de zonas de manejo sobre la productividad y eficiencias de captura del agua (ECA), EUA y EUN. En la campaña 2017/18, además del efecto de las zonas, se evaluaron dosis crecientes de fertilización con N (0; 58, 115 y 173 kg N ha-1) sobre las mismas variables. Para ambos ciclos se tomaron muestras de suelo y biomasa aérea en cuatro fases fenológicas del cultivo (establecimiento de la población inicial, macollaje, gran crecimiento y maduración). La campaña 2015/2016 presentó leves excesos hídricos (47 mm) mientras que la 2017/2018 déficit hídrico (56 mm). Se observó que, para ambos ciclos agrícolas, la zona 2 registró mayores valores que la zona 1 para las variables: biomasa fresca total (BT) (> 8,9% y > 20,6%); rendimiento cultural (RC) (> 9% y > 16%); EUN (> 1,8% y > 16,6%) y EUA (> 7,13 % y > 12,3%) para los ciclos 2015/16 y 2017/18, respectivamente. Esto demuestra que las condiciones ambientales del ciclo influyen en la magnitud de las diferencias entre zonas, tendiendo a reducir la diferencia cuando se presentaron balances hídricos más favorables durante el ciclo del cultivo. La interacción fue no significativa (p >0,05) entre zona de manejo y dosis de N para BT, RC, EUA y EUN, lo que demuestra que no existe un aprovechamiento diferencial del N por zona de manejo homogénea. El aumento en la dosis de N incrementó la BT, el RC y la EUA, y disminuyo la EUN, presentando todas las variables mayores valores en la zona 2 que en la zona 1. Estos resultados muestran que la implementación de diagnósticos y recomendaciones sobre las necesidades de agua y de fertilización nitrogenada en caña de azúcar según zonas homogéneas sería una estrategia promisoria para realizar un uso más eficiente de estos recursos, mejorando la productividad y reduciendo los riesgos ambientales asociados al uso ineficiente de los mismos.Sugarcane yield is strongly associated with water and nitrogen (N) availability, which present large spatio-temporal variations at field-level. These variations generate different efficiencies for the capture and use of N and water, which translates into less use of available resources and the difficulty of reaching potential yields. The objective of this thesis was to evaluate sugarcane productivity, water use efficiency (WUE), nitrogen use efficiency (NUE) and its components in homogeneous handling zones. During the 2015/16 and 2017/18 agricultural cycles, the experimental field was characterized in two homogeneous handlings zones. Based on satellite images and in-situ soil samplings, the zones were: zone 1 with sandy-loam texture, lower value of the normalized difference of vegetation index (NDVI), organic matter (OM) and moisture retention; and zone 2 with a clay-loam texture, higher NDVI, OM and moisture retention. During the 2015/16 cycle, the effect of handling zones on productivity and water capture efficiency (WCE), WUE and NUE was analyzed. In the 2017/18 cycle, in addition to the effect of the handling zones, the doses of fertilization with N (0; 58, 115 and 173 kg N ha-1) were evaluated on the same variables. For both cycles, soil and above ground biomass samples were taken in four phenological phases of the crop (initial population establishment, tillering, main growth and ripening). The 2015/2016 cycle presented slight water excesses (47 mm) while the 2017/2018 cycle presented slight water deficit (56 mm). It was observed that, for both agricultural cycles, zone 2 showed higher values than zone 1 for total fresh biomass (TB) (> 8.9% and > 20.6%); cane yield (CY) (> 9% and > 16%); NUE (> 1.8% and > 16.6%) and WUE (> 7.13% and > 12.3%) for the 2015/16 and 2017/18 cycles, respectively. This shows that the environmental conditions of the cycle influence the magnitude of the differences between zones, tending to reduce the difference when there were more favorable water balances during the crop cycle. The interaction between handling zones and N dose for TB, CP, WUE and NUE was not significant (p > 0.05), which shows that there is no differential use of N by homogeneous handling zones. Increasing the N dose increased TB, WCE, and WUE, and decreased NUE, being all these variables higher in zone 2 than in zone 1. These results show that the implementation of diagnoses and recommendations based on water and nitrogen fertilization requirements in sugar cane according to homogeneous zones would be a promising strategy to increase the efficiency of these resources, improving productivity and reducing the environmental risks associated with their inefficient use.EEA YutoFil: Fernandez, Hugo Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Yuto; Argentin
Cesar deliverable D2.4.3. European Best Practice Guidelines for Assessment of CO2 Capture Technologies
No full textThis is the original EBTF document guidelining the techno-economic modelling and benchmarking of CO2 capture technologies applied to gas and coal-fired power plants.
This report is the result of a joint effort of a team of members of the CAESAR, CESAR and DECARBit FP7 projects – the European Benchmarking Task Force (EBTF). It presents a compilation of the contents of two previous reports of the EBTF – assumptions and parameters for Carbon Capture projects from the Common Framework Definition Document and three technical study cases of power plants without and with CO2 capture – and it includes new material related to the costs and economics of carbon capture. The performance of new cycles proposed within the three projects, incorporating innovative capture technologies, should be compared and referred to the performance of these three cases. The three cases are: an Advanced Supercritical Pulverized Coal plant, an Integrated Gasification Combined Cycle and a Natural Gas Combined Cycle. For each case, a general description of the case is presented, followed by the specification of the process streams, operational characteristics and operational performance. The final part of the report is dedicated to the economics of these three cycles. This report is thus self sufficient and does not require the reader to know the two previous reports.
Author
Unraveling the mechanisms controlling Cd accumulation and Cd-tolerance in Brachiaria decumbens and Panicum maximum under summer and winter weather conditions
No full textWe evaluated the mechanisms that control Cd accumulation and distribution, and the mechanisms that protect the photosynthetic apparatus ofBrachiaria decumbensStapf. cv. Basilisk andPanicum maximumJacq. cv. Massai from Cd-induced oxidative stress, as well as the effects of simulated summer or winter conditions on these mechanisms. Both grasses were grown in unpolluted and Cd-polluted Oxisol (0.63 and 3.6 mg Cd kg(-1)soil, respectively) at summer and winter conditions. Grasses grown in the Cd-polluted Oxisol presented higher Cd concentration in their tissues in the winter conditions, but the shoot biomass production of both grasses was not affected by the experimental conditions. Cadmium was more accumulated in the root apoplast than the root symplast, contributing to increase the diameter and cell layers of the cambial region of both grasses. Roots ofB. decumbenswere more susceptible to disturbed nutrients uptake and nitrogen metabolism than roots ofP. maximum. Both grasses translocated high amounts of Cd to their shoots resulting in oxidative stress. Oxidative stress in the leaves of both grasses was higher in summer than winter, but only inP. maximumsuperoxide dismutase (SOD) and ascorbate peroxidase (APX) activities were increased. However, CO(2)assimilation was not affected due to the protection provided by reduced glutathione (GSH) and phytochelatins (PCs) that were more synthesized in shoots than roots. In summary, the root apoplast was not sufficiently effective to prevent Cd translocation from roots to shoot, but GSH and PCs provided good protection for the photosynthetic apparatus of both grasses.This study was supported by Sao Paulo Research Foundation - FAPESP (grants #2017/11299-8 and #2018/07190-3) and by the Hasselt University Methusalem project 08M03VGRJ. The authors thank the Profs Francisco Jose Krug, Jose Albertino Bendassolli and Paulo Cesar Ocheuze Trivelin, the lab technicians Aparecida de Fatima Patreze and Liz Mary Bueno de Moraes, and the master Nicolas Braga Casarin from CENA/USP for their contribution in the nutritional and delta15N isotopic analyses; and Rodrigo Hideki Mano from ESALQ/USP for his contribution in the study conduction. We also thank to Centro de Microscopia e Imagem (FOP/UNICAMP) and NAP/MEPA (ESALQ/USP) for the access to Transmission and Scanning electron microscopies, respectively. Ricardo Antunes Azevedo thanks Conselho Nacional de Desenvolvimento Cientifico e Tecnologico - CNPq (grant #303749/2016-4) for the research fellowship.Rabelo, FHS (corresponding author), Univ Sao Paulo, Coll Agr Luiz de Queiroz, Piracicaba, Brazil; Hasselt Univ, Ctr Environm Sci, Diepenbeek, Belgium. [email protected]
Temporal lift with repositioning of the orbicular muscle and eyebrow tail
No full textIntroduction: The superficial musculoaponeurotic system (SMAS) is the best structure we have at our disposal to elevate and reposition the face and neck in the facelift. However, in the temporoorbital region, this structure is often neglected. In the search for a simple, efficient and safe solution to treat temporoorbital droop, the author describes a temporal lift tactic with eyebrow tail repositioning to treat aging and sagging of the temporoorbital region.Methods: Treatment was performed in 358 patients between 2017 and 2020 in complete or temporary lifts. Only 30 were included in the article because they were exclusively submitted to temporal lifts, with or without blepharoplasty. Through a broken marginal intracapillary incision in the temporal region and with supraSMAS detachment, musculoaponeurotic treatment of the orbitotemporal region was performed, in addition to excess skin resection.Results: The tactic presented was efficient in lifting and opening the tail of the eyebrows in all treated cases, in addition to the effect of loss of contractile function of the lateral portion of the orbicularis muscle, with a significant improvement in periorbital wrinkles and orbitotemporal sagging.Conclusion: The effectiveness and excellent results achieved with the described operative tactic, associated with the scarcity of isolated or specific treatment options for the orbitotemporal region, make the proposed temporoorbital lift an excellent alternative for the rejuvenation of this region
A new concept in neck aging: “cervicofacial waist”
No full textIntroduction: The aging of the lower third of the face stimulates the definition deletion of the mandibular border and the cervicofacial angle, besides the appearance of platysmal bands in the anterior neck region. Patients have high expectations that the facelift will significantly resolve such effects. To achieve these results, we have developed an approach to defining what we call the cervicofacial waist.
Methods: The author proposes a new surgical facelift approach that has been performed on 444 consecutive patients since 2015, which involves an aggressive plication of the SMAS-platysma plus lateral traction, also by plication, of the platysma medial bands. Results: Despite the difficulty in comparing results with different techniques, we perceive a significant improvement in our results with the new surgical technique, without increasing the complication rates.
Discussion: We are looking for new techniques because the cervical region's traditional treatments seem flawed and based on ill-founded concepts. These involve the medial plication of the platysma bands by a submental approach, bringing them closer together and impairing the cranial elevation of the SMAS-platysma. Thus, we started to directly perform lateral plications on the bands through the lateral access of the face detachment, making a cervicofacial waist.
Conclusion: The sum of the effects of the plication of the SMAS with the lateral plication of the platysma medial band makes the cervicofacial definition clearer with important optimization of the desired aesthetic effects
Paleoenvironmental reconstruction of the semi-arid Chaco region of Argentina based on multiproxy lake records over the last six hundred years
No full textIn this paper, we analyze the paleoclimatic and paleoenvironmental evolution of Laguna Yema in semi-arid Chaco region of Argentina over the past six hundred years. High resolution multiproxy studies of lake sediments utilize analyses of lithology, mineralogy, geochemistry, palynology, and are constrained by radiocarbon and gamma spectrometry dating. Laguna Yema sediments were mainly composed of well stratified fine sediments (silts and clays), with variable proportions of quartz, clays (illite) and feldspar (microcline and albite). Twelve light and heavy geochemical elements were registered. Most elements (Al, Si, K, Ti, Fe, Rb, Ba, and Br) are associated with illite and albite. Different material transport processes related to the changes in aridity and humidity of the basin were identified using the main mineralogical origins of geochemical elements. Palynological records indicate cycles of contraction and expansion of the lake, with an increase in concentration of Alternanthera aquatica during wet periods (expansion of lake), and an increase in Ambrosia, Poaceae and fern spores during dry periods (contraction of lake). These changes are linked to fluctuations in moisture conditions in the Subandean Mountains and semi-arid Chaco regions, in response to interactions between the South American Monsoon System (SAMS) and the South American Low Level Jet (SALLJ), which send warm and humid air to northern Argentina. In a regional context, the Laguna Yema records are in accordance with the analyses of the temporal and spatial pattern of moisture distribution for the last six centuries. © 2019 Elsevier B.V.The Fundación BBVA funded the research in Laguna Yema through the Project “Past, Present and Future of Natural and Human Communities of the Dry Forest of South America: The Case of the Argentine Dry Chaco”. The Institute of Earth Sciences Jaume Almera (ICTJA-CSIC) and the University of Barcelona are recognized for providing the facilities for mineralogical and geochemical analyses, respectively. The Laboratory of Palynology of the School of Agricultural Sciences (UNJu) and Grupo Yavi de Investigaciones Científicas collaborated in the processing of pollen samples. We are grateful to Juan Padañu and family for helping us with the logistics and to the CEDEVA Laguna Yema for the facilities and local information. We also wish to thank Jamie Bookwalter for her corrections in the manuscript. We thank anonymous reviewers for their comments and criticisms that improved the manuscript.Peer reviewe
