The National University of Misiones (in Spanish: Universidad Nacional de Misiones, UNaM) is a public university in Argentina; founded by the law 20.286 on April 16, 1973, as part of the Taquini plan, a program of reorganization of the top education that would take the foundation of universities of Jujuy, La Pampa, Lomas de Zamora, Entre Ríos, Luján, Catamarca, Salta, San Juan, San Luis y Santiago del Estero, form to more than 11.000 pupils, between them numerous foreigners, given their border location with Paraguay and Brazil. It has a publishing house and a radio station, LRH301 FM Universidad Nacional de Misiones, that streams in Ogg Vorbis format..
Forestry by-products, particularly bark, offer opportunities to add value to the forest production chain. Tannins are renewable, less toxic alternatives to formaldehyde-based adhesives, supporting sustainable, and circular bioeconomy strategies. This study valorizes Pinus taeda bark by developing and assessing an optimized extraction process for condensed tannins under conditions compatible with industrial implementation. Firstly, the magnitude of the solvent effect (hot water and ethanol/water mixture) was evaluated using a screening factorial design. When comparing bark extraction with both solvents, ethanolic extracts presented lower extraction yields but higher total polyphenol content (TPC), condensed tannin content (CT), and Stiasny number (SN) than aqueous extracts. Then, the optimization involved the ethanol/water mixture. Response surface methodology, utilizing a three-factor (ethanol concentration, temperature, liquid/solid ratio) central composite design, was employed to maximize CT and SN. The optimized extract was characterized by total carbohydrate content, TGA, and gel time. The optimal extraction condition was 65
En el presente trabajo se da a conocer el hallazgo de Calophyllum brasiliense Cambess. en Argentina. Se presenta la descripción, ilustraciones, usos, distribución geográfica y caracterización ecológica de la especie.
The expansion and intensification of agriculture are widely recognized as major drivers of biodiversity loss. While research has primarily focused on deforestation frontiers, few studies have linked spatial-temporal land-cover dynamics to the organizational arrangements of agro-industrial supply chains. This study addresses this gap by analyzing land-use systems in the Upper Parana Atlantic Forest in Argentina, a priority biodiversity hotspot. We identify trends and patterns of agricultural and forest land-use change over the past two decades. We interpret these patterns in relation to the territorial integration of agro-industrial supply chains, using secondary data sources. We divided the study area into hexagonal cells of approximately 100 km². Interannual trends in native forest cover and dominant land uses were analyzed from 2000 to 2019. Trends were estimated by regressing the proportional area of land-cover classes derived from the MapBiomas Trinational Atlantic Forest against calendar year. To explore landscape homogenization, we regressed Shannon land-cover diversity indices over time. Our results reveal two contrasting spatial configurations. Some landscapes are dominated by a single land use, showing increasing homogenization. Others maintain a diversity of land uses and remain heterogeneous. These configurations seem closely associated with transaction modalities between primary producers and agro-industrial actors. In turn, these arrangements influence their impacts on native forest cover and habitat conservation outside protected areas. Understanding how agro-industrial supply chains are territorially embedded is critical for identifying incentives to foster more sustainable land-use trajectories and support biodiversity conservation, like the design of effective governance systems for Other Effective Area-Based Conservation Measures (OECMs).
One of the steepest reductions in jaguar distribution in the Americas is occurring at the southern end of its range, in Argentina. The species has disappeared from the central portion of the country and is currently confined to three northern ecoregions: the Yungas, the Chaco and the Green Corridor of the Upper Paraná Atlantic Forest. Using nine microsatellite loci we characterise the genetic diversity and structure of these three jaguar populations (n = 54). We also analyse our data in conjunction with those previously reported for Amazonian, Pantanal and other Atlantic Forest populations (n = 255). Argentine jaguars are structured into two genetic groups: Chaco+Yungas and the Green Corridor of the Upper Paraná Atlantic Forest. Both groups show similar genetic diversity, which is lower than that reported elsewhere in South America. On a continental scale, jaguars from Chaco and Yungas were grouped along with individuals from the Amazon and northern Pantanal, while Upper Paraná Atlantic Forest jaguars were assigned to the coastal Atlantic forest population. We associate the observed genetic pattern with a strong signal of local genetic drift, coupled with isolation by distance and little or no gene flow between populations. In this context, it is essential that the increasing ecological disconnection between the Chaco and Yungas ecoregions caused by landscape alterations does not become a genetic disconnection. The isolation of the Upper Paraná Atlantic Forest population is particularly worrying because is isolated from both other Atlantic Forest and Chaco+Yungas populations. Our results emphasize the urgent need for management actions at the regional level, taking into account Jaguar Conservation Units and Corridors.
National forest inventories have long and strong traditions in many countries and they can offer a wealth of information about the biophysical aspects of forests such as tree growth, carbon fluxes and biodiversity. However, these are in most cases not paralleled by data representing the socioeconomic dimensions of forests. Integration of socioeconomic and biophysical data has the potential to better unveil interactions between human and natural resources and can therefore better support policy. Climate change has multiple impacts on forest resources. Policies to support sustainable forestry, the bioeconomy, and climate change mitigation and adaptation are constantly developing. At the same time, forest owners’ attitudes and forest markets are evolving. More data is needed to advance the understanding of the links between the human and biophysical factors and the relationship between these factors and the complex objectives of forests. We compared the national forest inventories, national forest owner surveys, and national forest product surveys across Argentina, Finland, Norway, Sweden and the USA. The national forest inventories in all selected countries are built on solid methodological grounds and have strong institutional support and funding. However, the consistency of methods, frequency of implementation, and institutional support for forest owner and forest product surveys are in many cases lacking. There is also a lack of integration between biophysical and socioeconomic data. The USA was the only studied country with integrated biophysical and socioeconomic data. We suggest that this approach reflects the needs of data integration and can serve as a reference for other countries.
