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Ecology

08/15/19

Exponential growth equation and bacteria?

I'm a microbiologist, but I'm teaching some ecology in my intro-level course, so when we got to population growth, I thought I'd use the example of a microbial population. But, I hit a strange... more

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Ecology

08/15/19

How does Vibrio cholerae benefit from infecting its host?

As far as I know, *V. cholerae* secretes a toxin called choleragen into the intestinal lumen which affects the intestinal epithelial cells causing release of Na+ and Cl- ions into the lumen and... more

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Ecology

08/15/19

How do you know which organisms are keystone species?

I know that keystone species are those that play a crucial role in an ecosystem, but since all species are interdependent upon each other and each occupy their own niche, aren't they all... more

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Ecology

08/15/19

How does the ideal free distribution work?

I have recently completed a study on Brent Goose. I found that Brent Geese occupy high quality habitat first then once this is full of geese, they fill up low quality habitat. However, there were... more

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Ecology

08/14/19

Is it possible for a prey to become its main predator's predator?

This is actually for a worldbuilding project, but I thought I'd just ask it here as it is solely about biology. Anyway, would it be possible for a herbivore, let's call him X, that is predated by... more

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Ecology

08/13/19

Do invasive species survive in the long run?

If an invasive species preys on native species, spreads widely and becomes dominant, should it not become extinct soon enough because of a lack of food?

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Ecology

08/13/19

Can human change its morphology or anatomy due to ecological changes?

According to Charles Darwin, as the surrounding environment changes, so changes the anatomy or morphology of a specific organism. But nowadays, humans have become very advanced in the technology... more

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Ecology

08/13/19

Genes related to senses and their variation across animals?

Animals often have very different numbers of active genes related to any sense. For instance, most fish or even aquatic mammals have very few olfactory receptor genes, whereas this is higher in... more

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Ecology

08/12/19

Index of ecological niche overlap?

What is the Pianka's Index? - How does it work? - How can one calculate this index? - How often is it used? - In what context do people usually use it? - Can one infer any statistical significance... more

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Ecology Science Geology

08/12/19

what is the name for earths supply of water

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Ecology

08/11/19

Why does water stress lead to alkalinity of xylem sap in plants?

I was reading this book: **Plant Physiology and Development, Sixth Edition by Lincoln Taiz, Eduardo Zeiger, Ian M. Møller, and Angus Murphy** when this doubt came to my mind. Abscisic... more

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Ecology

08/11/19

Interdependency between organsims on our planet and its relation to ecosystem?

I am not a biologist but I just wonder if all species are interdependent. I mean if the tiger becomes extinct does it affect the ecosystem? If the mosquito or mouse become extinct does it affect... more

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Ecology

08/10/19

How important is dead wood to the ecology of a forest and how much dead wood should remain?

I have a local 'forest management group' in my area. One of the jobs they do is to thin out the forest by removing some of the trees. They then sell the wood for firewood. I want to tell them to... more

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Ecology

08/10/19

Pattern in parental care behaviour from lower to higher animals?

I was studying about parental care behavior. There seems a pattern present in this behavior in case of vertebrates. The more evolutionary advanced class the animal belongs to, the greater effort an... more

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Ecology

08/08/19

If an invasion species of large snake enters this community which change in most likely to happen

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Ecology

08/07/19

How does eutrophication yield lower levels of dissolved oxygen?

Where do the oxygen go? Is it consumed by a particular species? Is just not enough being made? Please explain.

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Ecology

08/06/19

What's the relationship between snail movement and rain?

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Ecology

08/06/19

Have there ever been as many mammals as there are now?

I apologize for the weird question, but based on a Google search it looks like this topic hasn't been discussed before. I'm hoping that enough information about population biology is stored in the... more

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Ecology

08/05/19

Are Humans Considered Keystone species?

Do humans have a huge impact on the ecosystem ? is it possible for other animals to live without us ?

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Ecology

08/05/19

How diverse are species in remote, isolated areas on Earth?

If we consider land areas that have been largely isolated from each other from a human point of view, but with a similar climate – for example, a part of Europe and a part of Americas with a... more

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Ecology

08/05/19

What is the effect of pesticides on worm growth?

As a new semester begins, we were asked to propose ideas for investigatory projects. Our idea revolves around the effects of pesticides on non-target organisms. Since frequent use of pesticides may... more

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Ecology

08/04/19

How to compare diversity between different ecosystems?

I've used the Shannon Wiener Diversity Index for a single ecosystem (species as categorical variables). Do you know any alternative indices, especially ones that compare diversity between different... more

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Ecology

08/03/19

Which magnoliophyta groups are NOT pollinated by bees and why?

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Ecology

08/03/19

Why both sexes of the species don't show equal level of Competition?

In most species, it is seen that either males or females have evolved to be aggressive towards approaching members of the same species of the same sex and maintaining strict territorial boundaries.... more

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Ecology

08/02/19

What do groundhogs and other subsurface-tunnel dwelling creatures do in heavy rains to avoid harm?

I notice groundhogs and many other tunneling creatures in my yard, the same yard which became pretty flooded during heavy rainfall. I don't see wildlife out during rain storms, but not long after,... more

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Exponential growth equation and bacteria?

How does Vibrio cholerae benefit from infecting its host?

How do you know which organisms are keystone species?

How does the ideal free distribution work?

Is it possible for a prey to become its main predator's predator?

Do invasive species survive in the long run?

Can human change its morphology or anatomy due to ecological changes?

Genes related to senses and their variation across animals?

Index of ecological niche overlap?

what is the name for earths supply of water

Why does water stress lead to alkalinity of xylem sap in plants?

Interdependency between organsims on our planet and its relation to ecosystem?

How important is dead wood to the ecology of a forest and how much dead wood should remain?

Pattern in parental care behaviour from lower to higher animals?

If an invasion species of large snake enters this community which change in most likely to happen

How does eutrophication yield lower levels of dissolved oxygen?

What's the relationship between snail movement and rain?

Have there ever been as many mammals as there are now?

Are Humans Considered Keystone species?

How diverse are species in remote, isolated areas on Earth?

What is the effect of pesticides on worm growth?

How to compare diversity between different ecosystems?

Which magnoliophyta groups are NOT pollinated by bees and why?

Why both sexes of the species don't show equal level of Competition?

What do groundhogs and other subsurface-tunnel dwelling creatures do in heavy rains to avoid harm?

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