Video Experimental Relacionado
Updated: Jul 16, 2025
07:55
Author Spotlight: A Tailor-Made Sample Preparation Approach for Enhanced MALDI-IMS Analysis of Hard Palm Seeds
Published on: June 30, 2023
1.1K
Un enfoque regional para salvar la Amazonía
Marielos Peña-Claros1, Carlos Nobre2
1Marielos Peña-Claros is a professor in the Forest Ecology and Forest Management Group at Wageningen University & Research, Wageningen, Netherlands, and is co-chair of the Science Panel.
Science (New York, N.Y.)
|September 21, 2023
Resumen
La Declaración de Belém tiene como objetivo proteger la selva amazónica y apoyar a las comunidades locales, pero carece de objetivos claros para la deforestación cero y la exploración de combustibles fósiles, que requieren un mayor refinamiento para su implementación efectiva.
Área de la Ciencia:
- Ciencias del medio ambiente
- Biología de la conservación
- Gestión de los ecosistemas
Sus antecedentes:
- La selva amazónica se acerca a un punto de inflexión crítico, arriesgando la degradación irreversible del ecosistema.
- Ocho naciones amazónicas se reunieron en Belém, Brasil, para abordar el futuro urgente de este bioma vital.
Objetivo del estudio:
- Para analizar los resultados de la cumbre de Belém.
- Evaluar la eficacia de la Declaración de Belém para hacer frente a la deforestación y la exploración de combustibles fósiles.
- Identificar las áreas clave para el perfeccionamiento de la política futura.
Principales métodos:
- Análisis del documento de la Declaración de Belém.
- Revisión de las discusiones y resultados de la cumbre.
- Evaluación de los compromisos relacionados con la protección del medio ambiente y la gestión de los recursos.
Principales resultados:
- La Declaración de Belém fue establecida como un plan para la conservación de la Amazonía y el apoyo a las comunidades locales.
- Las naciones reconocieron la proximidad del Amazonas a un punto de inflexión.
- Los acuerdos clave sobre la deforestación cero para 2030 y la detención de la exploración de nuevos combustibles fósiles estaban notablemente ausentes.
- La declaración carece de indicadores específicos y medibles para su aplicación.
Conclusiones:
- La Declaración de Belém representa un paso importante, pero requiere un mayor perfeccionamiento.
- Los ministros de Asuntos Exteriores deben mejorar la agenda con plazos concretos y objetivos medibles.
- Se necesitan medidas urgentes para evitar la degradación irreversible de los ecosistemas en la Amazonía.
Videos de Conceptos Relacionados
01:12Regional Terms
9.7K
Regional terms describe anatomy by dividing the body parts into different regions that contain structures involved in contributing similar functions. Using these terms helps increase the accurate description and identification of the particular region of interest or region affected by the disease.
Primarily, the human body has two major regions, the axial and appendicular regions. The axial region comprises regions from the head to the abdomen and makes up the central body axis. In contrast,...
Primarily, the human body has two major regions, the axial and appendicular regions. The axial region comprises regions from the head to the abdomen and makes up the central body axis. In contrast,...
9.7K
02:07Conservation of Declining Populations
9.7K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.7K
01:50Threats to Biodiversity
22.4K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.4K
02:04Conservation of Small Populations
13.2K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.2K
02:31Habitat Fragmentation
17.6K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.6K
01:17Region of Convergence
467
The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...
467