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Questions and Answers
¿Qué es una de las indicaciones de la salud del ecosistema?
¿Cuál es el concepto clave en la ecotoxicología que se refiere a la capacidad de un ecosistema para mantener su estructura y función en el tiempo?
¿Por qué se considera que la ecotoxicología es un enfoque holístico?
¿Qué libro de 1962 destacó los efectos de los pesticidas en el medio ambiente y despertó la conciencia pública sobre la ecotoxicología?
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¿Qué ley de 1976 estableció pautas para la regulación de sustancias tóxicas en los Estados Unidos?
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¿En qué década se formalizó la ecotoxicología como campo de estudio?
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Study Notes
Ecosystem Health
- Ecotoxicology is the study of the effects of toxic substances on the environment, focusing on the health of ecosystems.
- Ecosystem health is a key concept in ecotoxicology, referring to the ability of an ecosystem to maintain its structure and function over time.
- Indicators of ecosystem health include:
- Biodiversity
- Population dynamics
- Community structure
- Ecosystem processes (e.g. nutrient cycling, decomposition)
- Water and air quality
- Ecotoxicologists use a holistic approach to assess ecosystem health, considering the interactions between abiotic (non-living) and biotic (living) components.
Historical Development
- Ecotoxicology emerged as a distinct field of study in the 1960s and 1970s, driven by concerns about the environmental impact of pesticides and other chemicals.
- Key milestones in the development of ecotoxicology include:
- Silent Spring (1962): Rachel Carson's book highlighted the effects of pesticides on the environment and sparked public awareness of ecotoxicology.
- Toxic Substances Control Act (TSCA) (1976): The US legislation established guidelines for the regulation of toxic substances.
- Ecotoxicology as a discipline (1980s): The field became more formalized, with the establishment of research programs, conferences, and journals.
- OECD guidelines (1980s-1990s): The Organisation for Economic Co-operation and Development (OECD) developed guidelines for testing and assessing the environmental fate and effects of chemicals.
- The development of ecotoxicology has been influenced by advances in fields such as ecology, toxicology, and environmental chemistry.
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Description
Esta prueba evalúa tu conocimiento sobre la ecotoxicología y la salud de los ecosistemas, incluyendo la historia del campo, los indicadores de la salud de los ecosistemas y la evaluación de la salud de los ecosistemas.
