312 Answered Questions for the topic ecology

04/22/19

Example of species that went extinct because of excessive hunting by non-humanoid predators?
I was wondering if there were any species that went extinct for being excessively hunted/eaten by predators? I don't mean human hunting. For example, I wish to know if there's a species of frog... more
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04/20/19

Why are oceans said to have "low productivity" in terms of photosynthesis?
80% of the world's photosynthesis takes place in the ocean. Despite this, oceans are also said to have low productivity - they cover 75% of the earth's surface, but out of the annual 170 billion... more
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Ecology Zoology

04/20/19

Why are flies not scared when landing on a monitor with changing graphics?
I have been wondering why would insects in general, not be scared when important changes happen on your monitor where they have landed... If you move even just a finger, they are *scared to death*... more
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Ecology Ocean Glaciology Ice

04/20/19

Do icebergs have any impact on ecology?
Are icebergs neutral actors in the environment, or do they have any impact on the local ecology. Do they have any environmental impacts that might influence any part of the biosphere?
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Ecology Biology

04/17/19

how do rabbits and foxes depend on each other in a forest habitat
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04/16/19

How can we calculate the minimum sustainable number of the panda population?
I have a degree in Biology so I'm a little embarrassed that I never learned this, but... How do we know 1600 Pandas isn't enough? I know that we have historical numbers (although I couldn't find... more
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Ecology

04/12/19

Methods in researching loss of natural habitat?
What methods are there to research loss of natural habitat? I know of supervised image classification in GIS but what other methods are commonly used in research?
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04/12/19

Are there species that occupy several roles in the food hierarchy?
Are there species that occupy several roles in the food hierarchy? By role, I am referring to producer, primary consumer, secondary consumer, tertiary consumer, quaternary consumer and so... more
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04/12/19

Why are some berries poisonous?
In my understanding, the evolutional function of berries is to be eaten and pood out somewhere else, so that the seeds of the plant spread. Is this so? Then why are some berries poisonous?
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Ecology Physiology Botany

04/12/19

How does a pine cone open?
When a pine cone is wet, it remains closed. However, when it's dry it opens again. From the perspective of physics or biomechanics, what is the mechanism that allows a pine cone to open and close... more
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Ecology

04/10/19

What is the name of the new species of Orca Whale that was seen in the open waters of Chile?
New species of whale seen in ocean in Chile
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04/06/19

What are the ecological effects of moderately high and prolonged concentrations of nitrogen deposition on an ecosystem?
There are many sources of nitrogen which eventually get deposited out of the atmosphere and onto the land/surface. Typically higher levels of nitrogen compounds are emitted near urban and roadway... more
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04/04/19

Why do Arctic predators accumulate vitamin A?
Top predators in the Arctic are known to accumulate vitamin A, often to levels that are toxic for human consumption. A 2012 study by Senoo, Imai, *et al.* found that the livers of several predator... more
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04/04/19

Smallest viable reproducing population?
What is the smallest viable reproducing population, such as in a human population. By viable I mean a population which keeps genetic defects low (enough). A very strongly related question: what is... more
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04/01/19

Homeowners who live near bodies of water in the state of New Hampshire are asked to check all home cleaning products to make sure they do not contain phosphates. Why was this regulation put in place?
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03/30/19

Was the recent "conservation hunt" of a black rhino supported by science?
CNN [recently covered](http://www.cnn.com/2015/05/19/africa/namibia-rhino-hunt/) a sanctioned black rhino hunt in Namibia by Texan Corey Knowlton, who bid US$350,000 for the license. In the story,... more
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03/27/19

What is called the "area size that an animal usually lives in"?
What is called the "area size that an animal usually lives in" or "needs for a normal life"? Is there any specific term?
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Ecology Volcanology Soil

03/27/19

Do volcanos really create fertile soil?
I'm developing an ecology for a portion of my world that's geologically active and I remembered hearing that volcanic ash in soil makes it more fertile to agriculture. After extensive googling... more
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03/27/19

How did zootoxins evolve?
I've always wondered how toxins in certain organisms have evolved. Particularly, organisms that produce toxins as a deterrent to predators as opposed to organisms that use it to paralyze their... more
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Ecology Marine Biology

03/27/19

Inexperienced divers damage coral, but parrot fish eating coral doesn't do damage?
I've been learning about life on coral reefs. Recently I've become aware of the damage to coral reefs caused by tourism and inexperienced divers: 1) Corals have a thin membrane which keeps them... more
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Ecology Science Chemistry

03/25/19

Carbon footprint

The United States has roughly 250 million passenger cars for 320 million people. That equates to approximately 78% of all Americans owning a car. The vehicle population in China reached almost 300... more
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Ecology Homework Gis

03/19/19

Categories for supervised classification, wildlife analysis?
I am using GIS to undertake a small research on the loss of natural habitat in north England. I will be using Supervised Classification where I train the system on a few examples, e.g. - shallow... more
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Ecology Biology Botany

03/19/19

What damage results from forest fires besides the destruction of trees?
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03/19/19

Is it theoretically possible to restore the Tiger population to 100,000?
The current global Tiger population is roughly 5100 according to Wikipedia. With habitat destruction and poaching continuing and no effective improvement in conservation, most likely the Tiger... more
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03/18/19

Why haven't weeds overtaken the entire planet?
Given how rapidly weed plants spread and grow, choking out all other plant life, how come after millions of years we haven't ended with forests full of thistle or pokeweed, as opposed to pines or... more
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