81 research outputs found
Drivers of Spatial Distributions of Basking Shark (<em>Cetorhinus maximus</em>) in the Southwest Pacific
Procesos de profesionalización en torno al gerenciamiento liderazgo del talento humano
Luego de cinco ediciones del Programa de Posgrado “Gerenciamiento y Liderazgo del Talento Humano” de la FCECO de la UNER, se ha generado un Observatorio de Buenas Prácticas Gerenciales para el seguimiento de los procesos de profesionalización en torno al gerenciamiento y el liderazgo del talento de los profesionales que han cursado dicho Posgrado. Lo relevado en el Observatorio es uno de los insumos para este Proyecto, en el cual se analizan los impactos en el desempeño profesional, en términos de sinergias en los equipos de trabajo. La Hipótesis que se trabaja es la existencia de fuertes repercusiones en los entornos laborales donde los cursantes desarrollan sus actividades, a partir del cursado de la propuesta. Se analiza la importancia de profesionalizarse en el diálogo cooperativo para desarrollar las tareas alineándolas con los objetivos de la organización. El trabajo apunta a conocer las razones por las que los profesionales deciden continuar sus estudios de posgrado, describir en qué medida el paso por las aulas de posgrado tuvieron impacto en sus procesos de profesionalización, recuperar las percepciones en cuanto a la valoración que los egresados del programa hacen de la formación recibida en relación al mejoramiento de su profesionalidad y desarrollo personal.
ARK: http://id.caicyt.gov.ar/ark:/s22504559/i3aqn7gd
Squalus acanthias, spiny dogfish
While there are reported subpopulations of Squalus acanthias (Linnaeus, 1758) elsewhere in the world, the North Pacific subpopulation is now considered a separate species, Squalus suckleyi (Girard, 1854) (see Ebert et al. 2010). Further taxonomic studies on this genus are required, including in relation to Mediterranean and Black Sea subpopulations. In Europe, three subpopulations are inferred to occur.Fil: Finucci, B.. National Institute of Water and Atmospheric Research; Nueva ZelandaFil: Cheok, J.. University Fraser Simon; CanadáFil: Chiaramonte, Gustavo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia". Estación Hidrobiológica de Puerto Quequén (sede Quequén); ArgentinaFil: Cotton, C. F.. Florida State University; Estados UnidosFil: Dulvy, N. K.. University Fraser Simon; CanadáFil: Kulka, D. W.. No especifíca; ArgentinaFil: Neat, F. C.. No especifíca; ArgentinaFil: Pacoureau, N.. University Fraser Simon; CanadáFil: Rigby, C. L.. James Cook University; AustraliaFil: Tanaka, S.. No especifíca; ArgentinaFil: Walker, T. I.. University of Melbourne; Australi
Overfishing and habitat loss drive range contraction of iconic marine fishes to near extinction
Extinctions on land are often inferred from sparse sightings over time, but this technique is ill-suited for wide-ranging species. We develop a space-for-time approach to track the spatial contraction and drivers of decline of sawfishes. These iconic and endangered shark-like rays were once found in warm, coastal waters of 90 nations and are now presumed extinct in more than half (n = 46). Using dynamic geography theory, we predict that sawfishes are gone from at least nine additional nations. Overfishing and habitat loss have reduced spatial occupancy, leading to local extinctions in 55 of the 90 nations, which equates to 58.7% of their historical distribution. Retention bans and habitat protections are urgently necessary to secure a future for sawfishes and similar species
Carcharhinus hemiodon Pondicherry Shark
The Pondicherry Shark (Carcharhinus hemiodon) is a small (to 102 cm total length) and very rare Indo-
West Pacific whaler shark. It has a wide historic range from Oman to southern China, but known records
are scattered, and it has only been reliably verified from a handful of countries. It appears to occur in
shallow coastal waters, and has also been reported to enter rivers, although this has not been verified.
The contemporary range of this species is poorly defined and museum specimens were collected pre-
1960. There are reports from 1979, the 1990s, and 2000, but none of these could be verified. Its
identification is problematic, and it is easily confused with a number of other Carcharhinus species (for
example, recent putative records from Sri Lanka)
An atlas of seabed biodiversity for Aotearoa New Zealand
\ua9 2023 Copernicus GmbH. All rights reserved. The waters of Aotearoa New Zealand span over 4.2ĝ€\uafmillionĝ€\uafkm2 of the South Pacific Ocean and harbour a rich diversity of seafloor-Associated taxa. Due to the immensity and remoteness of the area, there are significant gaps in the availability of data that can be used to quantify and map the distribution of seafloor and demersal biodiversity, limiting effective management. In this study, we describe the development and accessibility of an online atlas of seabed biodiversity that aims to fill these gaps. Species distribution models were developed for 579 taxa across four taxonomic groups: demersal fish, reef fish, subtidal invertebrates and macroalgae. Spatial layers for taxa distribution based on habitat suitability were statistically validated and then, as a further check, evaluated by taxonomic experts to provide measures of confidence to guide the future use of these layers. Spatially explicit uncertainty (SD) layers were also developed for each taxon distribution. We generated layer-specific metadata, including statistical and expert evaluation scores, which were uploaded alongside the accompanying spatial layers to the open access database Zenodo. This database provides the most comprehensive source of information on the distribution of seafloor taxa for Aotearoa New Zealand and is thus a valuable resource for managers, researchers and the public that will guide the management and conservation of seafloor communities. The atlas of seabed biodiversity for Aotearoa New Zealand is freely accessible via the open-Access database Zenodo under 10.5281/zenodo.7083642 (Stephenson et al., 2022)
Overfishing Drives Over One-Third of All Sharks and Rays Toward a Global Extinction Crisis
The scale and drivers of marine biodiversity loss are being revealed by the International Union for Conservation of Nature (IUCN) Red List assessment process. We present the first global reassessment of 1,199 species in Class Chondrichthyes-sharks, rays, and chimeras. The first global assessment (in 2014) concluded that one-quarter (24%) of species were threatened. Now, 391 (32.6%) species are threatened with extinction. When this percentage of threat is applied to Data Deficient species, more than one-third (37.5%) of chondrichthyans are estimated to be threatened, with much of this change resulting from new information. Three species are Critically Endangered (Possibly Extinct), representing possibly the first global marine fish extinctions due to overfishing. Consequently, the chondrichthyan extinction rate is potentially 25 extinctions per million species years, comparable to that of terrestrial vertebrates. Overfishing is the universal threat affecting all 391 threatened species and is the sole threat for 67.3% of species and interacts with three other threats for the remaining third: loss and degradation of habitat (31.2% of threatened species), climate change (10.2%), and pollution (6.9%). Species are disproportionately threatened in tropical and subtropical coastal waters. Science-based limits on fishing, effective marine protected areas, and approaches that reduce or eliminate fishing mortality are urgently needed to minimize mortality of threatened species and ensure sustainable catch and trade of others. Immediate action is essential to prevent further extinctions and protect the potential for food security and ecosystem functions provided by this iconic lineage of predators
Dutch home-based pre-reading intervention with children at familial risk of dyslexia
Children (5 and 6 years old, n = 30) at familial risk of dyslexia received a home-based intervention that focused on phoneme awareness and letter knowledge in the year prior to formal reading instruction. The children were compared to a no-training at-risk control group (n = 27), which was selected a year earlier. After training, we found a small effect on a composite score of phoneme awareness (d = 0.29) and a large effect on receptive letter knowledge (d = 0.88). In first grade, however, this did not result in beneficial effects for the experimental group in word reading and spelling. Results are compared to three former intervention studies in The Netherlands and comparable studies from Denmark and Australia
History of Reading Struggles Linked to Enhanced Learning in Low Spatial Frequency Scenes
People with dyslexia, who face lifelong struggles with reading, exhibit numerous associated low-level sensory deficits including deficits in focal attention. Countering this, studies have shown that struggling readers outperform typical readers in some visual tasks that integrate distributed information across an expanse. Though such abilities would be expected to facilitate scene memory, prior investigations using the contextual cueing paradigm failed to find corresponding advantages in dyslexia. We suggest that these studies were confounded by task-dependent effects exaggerating known focal attention deficits in dyslexia, and that, if natural scenes were used as the context, advantages would emerge. Here, we investigate this hypothesis by comparing college students with histories of severe lifelong reading difficulties (SR) and typical readers (TR) in contexts that vary attention load. We find no differences in contextual-cueing when spatial contexts are letter-like objects, or when contexts are natural scenes. However, the SR group significantly outperforms the TR group when contexts are low-pass filtered natural scenes [F(3, 39) = 3.15, p<.05]. These findings suggest that perception or memory for low spatial frequency components in scenes is enhanced in dyslexia. These findings are important because they suggest strengths for spatial learning in a population otherwise impaired, carrying implications for the education and support of students who face challenges in school
An atlas of seabed biodiversity for Aotearoa New Zealand
The waters of Aotearoa New Zealand span over 4.2 million km2 of the
South Pacific Ocean and harbour a rich diversity of seafloor-associated
taxa. Due to the immensity and remoteness of the area, there are significant
gaps in the availability of data that can be used to quantify and map the distribution of
seafloor and demersal biodiversity, limiting effective management. In this
study, we describe the development and accessibility of an online atlas of
seabed biodiversity that aims to fill these gaps. Species distribution
models were developed for 579 taxa across four taxonomic groups: demersal
fish, reef fish, subtidal invertebrates and macroalgae. Spatial layers for
taxa distribution based on habitat suitability were statistically validated
and then, as a further check, evaluated by taxonomic experts to provide
measures of confidence to guide the future use of these layers. Spatially
explicit uncertainty (SD) layers were also developed for each taxon
distribution. We generated layer-specific metadata, including statistical
and expert evaluation scores, which were uploaded alongside the accompanying
spatial layers to the open access database Zenodo. This database provides
the most comprehensive source of information on the distribution of seafloor
taxa for Aotearoa New Zealand and is thus a valuable resource for
managers, researchers and the public that will guide the management and
conservation of seafloor communities. The atlas of seabed biodiversity for Aotearoa New Zealand is freely accessible via the open-access database Zenodo under
https://doi.org/10.5281/zenodo.7083642 (Stephenson et
al., 2022).</p
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