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What are 4 Methods scientists use to determine population size in an ecosystem?
Wiki User
∙ 13y ago
- direct observation-count
- indirect observation-estimate
- sampling-count small number in a small area and multiply to get the number in the large area
- mark and recapture studies-capture, mark, release
- RACHEL WAZ HERE AND EVERY1 LOVZ HER
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoThey keep records
One way is to tag animals. For example, say you tag 100 bison. Later you find 10 bison that are tagged in a herd of 100. You now know that there are about 10 tagged bison for every 100 total bison. If you tagged 100 bison you would have a bison population of 1000. (100 total tagged x 10 in a tagged in a herd)
Wiki User
∙ 9y agoThere are a couple of ways an ecologist can determine the size of a population without counting every organism. This can be done by either sampling, mark-and-recapture studies, or indirect or direct observation.
Wiki User
∙ 9y agoThere are many ways, it depends on the species being studied. Most methods would use a representative, random sample of the population.
For plants or small, slow-moving animals this can be done using a quadrat, which allows an Ecologist to isolate a small area of a habitat and then count the number of individuals inside that small area. To get an estimate of the total population, multiply the population of the quadrat by the size of the total habitat.
For larger or more elusive animals, such as Tigers, ecologists can count footprints (pug marks.) Like a human's fingerprints, pug marks can be used to identify an individual. By counting the unique pug marks in a habitat, the ecologist can estimate the population.
Wiki User
∙ 12y agoThey use a meter and they have setup lines around the wildlife the line is called the numberometer it can measure the population of animals inside the lines.
Wiki User
∙ 11y agoTried to delete this answer it was purely graffiti
Wiki User
∙ 13y ago- Census (physically counting them)
- Mass ratio analysis
- Volume-ratio analysis
- Lincoln Index / "Capture-Recapture" ---> most effective/viable.
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∙ 15y agoAP bio? Ms A's class?
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∙ 12y agohbb v v
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Scientists use many methods to determine the size of a population Which method is best for extremely large populations?
Actually census' are the most accurate estimation (including the estimation of homeless, illegals, etc.)
What are the methods of fishing that disturb the interrelationshipin an ecosystem?
Very effective methods of fishing, which remove a large portion of a specific species all in the same go, can upset the ecosystem.
Who performs critical evaluation of scientific ideas and methods?
No
Why might it be important for scientists to be able to communicate their methods and their findings?
Scientists first create an hypothesis. They develop methods to prove their hypothesis. In order for other scientists to replicate the findings and prove or disprove another scientist's outcome, the original scientist MUST describe the methods used and the findings.
Is it true environmental scientists are unconcerned with methods to preserve natural resources?
false
Scientists use many methods to determine the size of a population Which method is best for extremely large populations?
Actually census' are the most accurate estimation (including the estimation of homeless, illegals, etc.)
Which methods would you use to determine the number of mushrooms growing on the floor of a large forest?
Population Density
What are the methods of fishing that disturb the interrelationshipin an ecosystem?
Very effective methods of fishing, which remove a large portion of a specific species all in the same go, can upset the ecosystem.
What is Air Methods's population?
Air Methods's population is 2,739.
What has led scientists to focus more on inductive methods?
The microscope has led scientists to put more focus on inductive research methods.
Which section of a research poster of paper allow es other scientists to repeat an experiment?
for a-plus biology answer to that question is: methods
Who performs critical evaluation of scientific ideas and methods?
No
Why are scientific methods useful?
that is what the scientists use to experiment
What methods do scientists use to answer question?
Logic and reasoning
Why might it be important for scientists to be able to communicate their methods and their findings?
Scientists first create an hypothesis. They develop methods to prove their hypothesis. In order for other scientists to replicate the findings and prove or disprove another scientist's outcome, the original scientist MUST describe the methods used and the findings.
Are environmental scientists unconcerned with methods to preserve natural resources?
It would be false to say environmental scientists are unconcerned with methods to preserve natural resources. Persevering natural resources is a priority among many environmental scientists.
Why do scientists vary the order of the steps of scientists methods?
Because it is possible- if you don't need a step skip it.
