HomePopulation- A group of organisms of the same species that live in an ecosystem. It is a balancebetween new offspring and deaths and it keeps the population level stable. Overpopulation- when the number of organisms exceeds the ability of the environment to support them. It can lead to a reduction in species A population depends on Food Water Shelter Predators These things are limiting factors and keep the population level stable. A change in limiting factors will affect the population. Carrying capacity- how many organisms the ecosystem can support. It is the greatest number of species that the environment can contain without threatening the habitat Migration- movement of a group of organisms from one place to another A Decrease in predators and an increase in food make the population grow. In a balanced ecosystem, no one group overuses the resources Overuse can lead to Decrease in diversity Degrading of habitat Starvation Overpopulation happens because of changes in the environment If left alone the environment tries to balance itself out Sometimes it takes a while to bounce back, sometimes it does not bounce back Sometimes organisms migrate to another ecosystem that can accommodate it. population⬆️resources⬇️population Biodiversity- The variety of all living organisms in the different ecosystems where they live. Scientists measure on three different levels- Genetic- the genetic variation the more the species can adapt Species - the variety of species in an area help each other to adapt to environmental changes Ecological- Each one can support and adapt multiple species becuase of the condition of the environment What can be a threat to a habitat population- Disease Hunting Natural disasters Invasive species Forest fires Populations are monitored for changes as changes happen they move in status They look at the rate of decline, geographic region, probability of extinction Categories for the threatened list Extincent- species where the last individual has died and surveys have been unable to log even a single individual Extinct in the wild- species that only survive in captivity outside their historical geographic range Critically endangered- species that possess an extremely high risk of extinction due to rapid population declines. Drops 80/90 percent over 10 years and fewer than 50 individuals Endangered- species that possess a very high risk of extinction as a result of rapid population declines. Drops 50/70 percent over ten years and fewer than 250 individuals Vulnerable- species that possess a very high risk of extinction due to rapid population declines. Drops 30/50 percent of the past 10 years and fewer than 1000 individuals Near threatened- species that are close to becoming threatened in the near future Least concern- species that are pervasive and abundant after assessment Data deficient- a condition in which the amount of data about extinction is lacking so a complete assessment can’t be performed Not evaluated- any of the 1.9 million species not yet assessed by the IUCN Need to manage natural resources Prevent overuse in hunting and fishing Control population Limit land use Identify threats Climate change Growing population of a new species The environment is all living and non-living things that surround an ecosystem Industry creates wastes (solids, liquids, gases) that end up in the environment Habitats get cleared for building that rid animals and cause a loss of species pollution, climate change, and overuse of land and resources negatively impact the environment. Pollution comes from Energy use Industry Daily actions Pollution causes Breathing problems Heats the air Damages soil and plants And contaminants water Ecosystems have limited resources, and land use can contribute to the loss Land use Builds name of business Builds towns or cities Mines for resources As towns and cities grow they push boundaries Vegetarian (soil is damaged) Species and forced out Can eliminate whole ecosystems Protect land Permits (restrictions) Zoning (keeping factors and residential areas apart, works against pollution) Conservation (preserve land so it can’t be built on) Design solutions to prevent land use problems Remote sensing - scientists use satellites to show how land has changed over time Ground truthing- verify satellite data in person Solutions- rooftop gardens, carpooling, habitat restoration, new methods of transportation(electric) Remote sensing and ground truthing can show damage caused by land use.

Population- A group of organisms of the same species that live in an ecosystem. It is a balancebetween new offspring and deaths and it keeps the population level stable. Overpopulation- when the number of organisms exceeds the ability of the environment to support them. It can lead to a reduction in species A population depends on Food Water Shelter Predators These things are limiting factors and keep the population level stable. A change in limiting factors will affect the population. Carrying capacity- how many organisms the ecosystem can support. It is the greatest number of species that the environment can contain without threatening the habitat Migration- movement of a group of organisms from one place to another A Decrease in predators and an increase in food make the population grow. In a balanced ecosystem, no one group overuses the resources Overuse can lead to Decrease in diversity Degrading of habitat Starvation Overpopulation happens because of changes in the environment If left alone the environment tries to balance itself out Sometimes it takes a while to bounce back, sometimes it does not bounce back Sometimes organisms migrate to another ecosystem that can accommodate it. population⬆️resources⬇️population Biodiversity- The variety of all living organisms in the different ecosystems where they live. Scientists measure on three different levels- Genetic- the genetic variation the more the species can adapt Species - the variety of species in an area help each other to adapt to environmental changes Ecological- Each one can support and adapt multiple species becuase of the condition of the environment What can be a threat to a habitat population- Disease Hunting Natural disasters Invasive species Forest fires Populations are monitored for changes as changes happen they move in status They look at the rate of decline, geographic region, probability of extinction Categories for the threatened list Extincent- species where the last individual has died and surveys have been unable to log even a single individual Extinct in the wild- species that only survive in captivity outside their historical geographic range Critically endangered- species that possess an extremely high risk of extinction due to rapid population declines. Drops 80/90 percent over 10 years and fewer than 50 individuals Endangered- species that possess a very high risk of extinction as a result of rapid population declines. Drops 50/70 percent over ten years and fewer than 250 individuals Vulnerable- species that possess a very high risk of extinction due to rapid population declines. Drops 30/50 percent of the past 10 years and fewer than 1000 individuals Near threatened- species that are close to becoming threatened in the near future Least concern- species that are pervasive and abundant after assessment Data deficient- a condition in which the amount of data about extinction is lacking so a complete assessment can’t be performed Not evaluated- any of the 1.9 million species not yet assessed by the IUCN Need to manage natural resources Prevent overuse in hunting and fishing Control population Limit land use Identify threats Climate change Growing population of a new species The environment is all living and non-living things that surround an ecosystem Industry creates wastes (solids, liquids, gases) that end up in the environment Habitats get cleared for building that rid animals and cause a loss of species pollution, climate change, and overuse of land and resources negatively impact the environment. Pollution comes from Energy use Industry Daily actions Pollution causes Breathing problems Heats the air Damages soil and plants And contaminants water Ecosystems have limited resources, and land use can contribute to the loss Land use Builds name of business Builds towns or cities Mines for resources As towns and cities grow they push boundaries Vegetarian (soil is damaged) Species and forced out Can eliminate whole ecosystems Protect land Permits (restrictions) Zoning (keeping factors and residential areas apart, works against pollution) Conservation (preserve land so it can’t be built on) Design solutions to prevent land use problems Remote sensing - scientists use satellites to show how land has changed over time Ground truthing- verify satellite data in person Solutions- rooftop gardens, carpooling, habitat restoration, new methods of transportation(electric) Remote sensing and ground truthing can show damage caused by land use.