Testing a global standard for quantifying species recovery and assessing conservation impact.

Recognizing the imperative to evaluate species recovery and conservation impact, in 2012 the International Union for Conservation of Nature (IUCN) called for development of a "Green List of Species" (now the IUCN Green Status of Species). A draft Green Status framework for assessing species' progress toward recovery, published in 2018, proposed 2 separate but interlinked components: a standardized method (i.e., measurement against benchmarks of species' viability, functionality, and preimpact distribution) to determine current species recovery status (herein species recovery score) and application of that method to estimate past and potential future impacts of conservation based on 4 metrics (conservation legacy, conservation dependence, conservation gain, and recovery potential). We tested the framework with 181 species representing diverse taxa, life histories, biomes, and IUCN Red List categories (extinction risk). Based on the observed distribution of species' recovery scores, we propose the following species recovery categories: fully recovered, slightly depleted, moderately depleted, largely depleted, critically depleted, extinct in the wild, and indeterminate. Fifty-nine percent of tested species were considered largely or critically depleted. Although there was a negative relationship between extinction risk and species recovery score, variation was considerable. Some species in lower risk categories were assessed as farther from recovery than those at higher risk. This emphasizes that species recovery is conceptually different from extinction risk and reinforces the utility of the IUCN Green Status of Species to more fully understand species conservation status. Although extinction risk did not predict conservation legacy, conservation dependence, or conservation gain, it was positively correlated with recovery potential. Only 1.7% of tested species were categorized as zero across all 4 of these conservation impact metrics, indicating that conservation has, or will, play a role in improving or maintaining species status for the vast majority of these species. Based on our results, we devised an updated assessment framework that introduces the option of using a dynamic baseline to assess future impacts of conservation over the short term to avoid misleading results which were generated in a small number of cases, and redefines short term as 10 years to better align with conservation planning. These changes are reflected in the IUCN Green Status of Species Standard

El azul de toluidina nuevo indicador fotoredox en determinaciones con 1-2 diaminociclohexanotetraacético / Juan Luis Polo Camacho ; director Tomás Pérez Ruiz.

Tesis-Universidad de Murcia.Consulte la tesis en: BCA. GENERAL. ARCHIVO UNIVERSITARIO. T.M.-174.CRAI CIENCIAS. DEPOSITO. TD 35

Microdeterminación espectrofotométrica de Cu (II) por extracción de su complejo con 5,7-d¡bromo-8-hidroxiquinoleína

Se estudian las características del complejo de Cu(II) con 5,7-dibromo- -8-hidroxiquinoleína (dibromoxina) y su extracción en disolventes orgánicos. En medio alcalino la formación y extracción en cloroformo es muy selectiva. De las investigaciones realizadas se propone un nuevo método para la determinación espectrofotométrica de cobre entre 0,3- 0,7 ug/ml, la absortividad molar del complejo es 6,3 10* l.mol'^cm-^ La desviación estándar es 0,24 %. El método se ha aplicado con excelentes resultados para la determinación de cobre en muy pequeña cantidad, en plomo metálic

Cerdo en salsa de ciencia: cultura y técnica

101 páginasEste libro de preparaciones culinarias con carne pulpa de cerdo surge como un aporte a la proyección social desde la investigación. Además del aporte gastronómico, se fundamentan algunos aspectos de la cultura gastronómica y la ciencia alrededor de la carne pulpa de cerdo. En este texto de recetas, enfocado en el protagonismo del cerdo, con toques creativos que salen un poco de la forma tradicional de consumo, se busca, también, resaltar la importancia cultural y destacar varios ingredientes que junto al cerdo nos hacen caracterizar los sabores de nuestra tierra colombiana

The excavation of buried articulated Neanderthal skeletons at Sima de las Palomas (Murcia, SE Spain)

At Sima de las Palomas del Cabezo Gordo (Murcia, Spain) remains of several Neanderthals have been excavated recently. From about 50,000 years ago articulated parts of 3 adult skeletons (including skulls with mandibles, vertebral column, rib cages, shoulder blades, hip bones, upper and lower limbs, hands and feet, often in anatomical connexion) were excavated from the lower part of a cemented accumulation of scree and large stones (éboulis) sloping downwards and inwards into the cavity, along with burnt bones of large mammals and Mousterian implements. The excavation of the skeletons is the subject of this paper (palaeoanthropological skeletal descriptions are soon to be published elsewhere). Behind the cemented scree there accumulated a layer of finer sediment containing burnt animal bones, followed by more fine sediment that filled the cavity up to the overhanging rock roof and contained isolated teeth and unburnt bone fragments of Neanderthals, including 3 mandibles, as well as Mousterian implements and faunal remains, all dating from before 40,000 years ago. Altogether, at least 9 Neanderthals are represented by finds from the site (including 3 unstratified mandibles), ranging from babies to adults. Dating methods include radiocarbon, uranium-series, and optical luminescence. Pollen analysis implies conditions less severe than those of the Heinrich 4 cold oscillation at 40,000 years ago

Discovering HIV related information by means of association rules and machine learning

Acquired immunodeficiency syndrome (AIDS) is still one of the main health problems worldwide. It is therefore essential to keep making progress in improving the prognosis and quality of life of affected patients. One way to advance along this pathway is to uncover connections between other disorders associated with HIV/AIDS-so that they can be anticipated and possibly mitigated. We propose to achieve this by using Association Rules (ARs). They allow us to represent the dependencies between a number of diseases and other specific diseases. However, classical techniques systematically generate every AR meeting some minimal conditions on data frequency, hence generating a vast amount of uninteresting ARs, which need to be filtered out. The lack of manually annotated ARs has favored unsupervised filtering, even though they produce limited results. In this paper, we propose a semi-supervised system, able to identify relevant ARs among HIV-related diseases with a minimal amount of annotated training data. Our system has been able to extract a good number of relationships between HIV-related diseases that have been previously detected in the literature but are scattered and are often little known. Furthermore, a number of plausible new relationships have shown up which deserve further investigation by qualified medical experts

Divulgación Científica No.3

La investigación constituye en sí misma un valioso instrumento para ser empleado por la sociedad, es mucho más que un objeto —sin abandonar lo que por naturaleza le compete: garantizar procesos de calidad—, puede entregar valiosa información sobre diferentes temas de interés, para avanzar en el análisis y propiciar la creación de redes de conocimiento.Research constitutes in itself a valuable instrument to be used by society, it is much more than an object —without abandoning what by nature is its responsibility: guaranteeing quality processes—, it can provide valuable information on different topics of interest, to advance in analysis and promote the creation of knowledge networks