Aim: How have humans negatively affected diversity in the environment? Do Now: What is meant by carrying capacity? What is the carrying capacity of the.

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Transcripción de la presentación:

Aim: How have humans negatively affected diversity in the environment? Do Now: What is meant by carrying capacity? What is the carrying capacity of the human population?

Human Impact/ Impacto Humano Although not the most numerous organisms on earth, humans have the greatest effect on the environment. Aunque los seres humanos no son los organismos mas numerosos en el planeta, son los que han tenido el efecto mas grande en el planeta.

How do humans usually impact the balance in ecosystems? Como afectan los seres humanos al balance de los ecosistemas?

Why are humans disrupting the balance in ecosystems? Por que los seres humanos han alterado el balance en los ecosistemas? The human population shows exponential growth- (la poblacion humana crece de manera exponencial) This large number of people puts a huge strain on the environment. La cantidad tan grande de seres humanos es una carga para el ambiente.

How did this rapid growth occur? Por que aumenta tanto la poblacion humana? Increased Food Supply Aumento de comida Improved Health Care Mejor cuidado de salud Improved Sanitation and hygiene Mejor higiene

Carrying Capacity- is the number of individuals the environment can support. Capacidad de carga- el numero de individuos que el ambiente puede sostener Limiting Factors- are factors in the environment that limit the size of populations. Factores Limitantes- Son factores en el ambiente que limitan el tamano de las poblaciones. What are some of our limiting factors? Cuales son nuestros factores limitantes? Food, Water, Oxygen, Space Comida, agua, oxigeno y espacio

Carrying Capacity/ Capacidad de carga Time

Have we reached earth’s carrying capacity? Hemos alcanzado la capacidad de carga del planeta Tierra? No, because we continuously come up with new technologies to produce more food No, porque desarrollamos tecnologias nuevas para producir mas comida.

What are some of the detrimental effects of overpopulation? Cuales son los efectos de la sobrepoblacion? Technology Tecnologia Waste Disposal Basura Over Consumption Sobre consumo

Overcrowding Sobre poblacion Industrialization/ Industralizacion Habitat Destruction Destruccion de habitat

Deforestacion

Deforestation/ Deforestacion Effects: 1)Deforestation leads to habitat destruction. (Destruye el habitat) 2) Organisms have no place to live. (Los organismos no tienen donde vivir) 3)Organisms can become endangered or extinct. Los organismos pueden estar en peligro o extinguidos. 4) Biodiversity decreases. (Baja la biodiversidad) Why? Por que? Provide land for farming (Tierra para la agricultura. provide people places to live (Provee lugares donde vivir) Provide Resources to use in building or manufacturing Provee recursos para construir o para manufacturar

Direct Harvesting/ Cosecha Directa Organisms (plants and animals) are removed from the environment and NOT replaced. Los organismos son eliminados de su ambiente y no son reemplazados. Organisms are usually obtained through hunting or poaching (illegal hunting). Los organismos son obtenidos por caza ilegal. Often results in the loss or elimination of a species & a decrease in biodiversity. Esto resulta en la eliminacion de una especie y en la disminucion de la biodiversidad. Examples: Ivory, Exotic Birds (Marfil, pajaros exoticos)

Imported Species/ Especies Importadas Non-native or Invasive species Especies Invasivas o que no son nativas animal and vegetation species often become invasive when introduced into environments lacking natural predators or other mechanisms to keep the dominating species in check. Especies de animales y plantas se vuelven invasivas cuando son introducidas a ambientes que no tienen los depredadores naturales o otros mecanismos para mantener el numero de la poblacion controlada. These species become pests & disrupt the current ecosystem by reducing biodiversity. Estas especies se convierten en plagas y trastornan el ecosistema reduciendo la biodiversidad.

How do ecologists solve these pest problems? Introduction of natural predators (Introduccion de predadores naturales) Use of Pesticides or Insecticides (Uso de pesticidas o insecticidas) These chemicals/poisons can kill the pest, but also other organisms native to the ecosystem. Estos organismos o venenos pueden hacer dano a otras poblaciones

The release of natural predators of a pest species is a safe way to control pest problems without reducing diversity. If a non-native predator is imported to control the pest, it may choose to feed on other native organisms reducing biodiversity. Ex. The ladybug is released to eat aphids (bugs that eat crops). La introduccion de un predador natural de especie de plaga es recomendado. Si el predador no es nativo de esa area puede alimentarse de otras especies, lo que disminuira la biodiversidad. Biological Control / Control Biologico

What are the effects of farming? What happened to biodiversity? What happened to ecosystem stability? What would happen if an insect came along? What do farmers use to get rid of insects? ¿Qué sucedió con la biodiversidad? ¿Qué pasó con la estabilidad del ecosistema? ¿Qué pasaría si apareciera un insecto? ¿Qué usan los agricultores para deshacerse de insectos?