304 Answered Questions for the topic ecology

Ecology

05/30/19

Biology experiment with algae method help?
I'm planning a biology experiment I need to complete. I was planning on measuring the affect of pH on algae growth. I chose chlorella to be the test algae I use (are there any algae that would be... more
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Ecology

05/26/19

Is resource partitioning a type of character displacement?
**Question** Imagine two related species. They prey on the same species but avoid competition by feeding at different times of the day. Is this a type of character displacement? **Thought** On... more
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Ecology

05/24/19

Are there laws in ecology?
Are there clearly defined ecological laws, as in the science of physics? If not, why is this the case?
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Ecology

05/22/19

If I built a concrete pool, would it ever contain fish?
Imagine that I built a concrete-walled pool the size of a football field and filled it with fresh water - obtained from another lake but free of bacteria, plantlife, eggs, etc. Would it ever, over... more
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05/21/19

When are population dynamics models useful?
When are population dynamics models useful? There seems to have been a lot of research about it, but how does it help? If I need data about how a population will evolve under what conditions, I... more
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05/21/19

Why is the floral biodiversity of grazed grassland higher than that of mown grassland?
I have collected some data to compare the biodiversity of a field in which the plagioclimax is maintained by machine mowing with a field in which the plagioclimax is maintained by sheep... more
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05/21/19

Why do birches have a white bark?
Several species of the tree genres *Betula* have a white bark,especially when they are young. This is quite peculiar to trees - at least in central Europe; so I'm wondering if there is a ecological... more
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Ecology Evolution

05/21/19

Parasitism and mimicry?
I was reading [this article](http://www.nature.com/nature/journal/vaop/ncurrent/full/nature13112.html) which states this: > Classical Batesian mimicry, in which an undefended mimic evolves... more
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05/21/19

What is the difference between a predator and a parasite?
A human encountering a tiger or a malaria plasmodium is likely to suffer, and the tiger/plasmodium is likely to gain from the transaction. Not necessarily a good example, and I am aware that a... more
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05/21/19

What percentage of fish are herbivorous vs. carnivorous?
It appears that the majority of fish we eat are carnivorous, such as salmon and tuna. This got me wondering how common herbivores and carnivores are among fish species. I couldn't find an answer to... more
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05/14/19

What prevents predator overpopulation?
I've often heard that a population, human or otherwise, will continue to grow as long as there is food available (assuming nothing else is killing them off). It makes sense: if you have food you... more
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05/13/19

Is it mostly true that predators or parasites traverse wider spatial areas than their prey or hosts?
Does it tend to be true that as you go up the food chain, the species tend to cover wider areas? I am basically asking whether a population's prey varies spatially more than a population's... more
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05/11/19

Is the impact of carbon emision dependent on the location on the earth?
While I was reading how the EU taxes aviation companies based on carbon emissions it occurred to me that the effect of carbon emissions on global temperature etc. may depend on where the carbon is... more
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Ecology Biology Botany

05/10/19

State the factors responsible for seed germination.
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05/10/19

How to get rid of mosquitoes in a small lake?
I own a small lake. Give or take it is about 50 meters wide and 100 meters long (or 160 feet wide, 320 feet long), with a max depth of around 2 meters / 6.5 feet. One third of the lake is... more
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05/07/19

In search of California ecosystem vegetation field guide?
I am searching for an illustrated naturalist handbook to coastal California vegetation (trees, shrubs, wildflowers) organized by ecosystem. For example, there might be sections for coastal dunes... more
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05/06/19

Why is a mosquito feeding on human blood not a parasite?
I recently read in my Ecology course notes that a mosquito feeding on human blood is not considered as a parasite. However, since it sucks blood from the human body, shouldn't it be regarded as a... more
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05/05/19

Sill vs. Breakwater vs. Revetment
What is the between a sill, a breakwater, and a revetment in terms of Earth science and biology?
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05/02/19

What is the body density of insects on average?
What is the body density (in $\ ext{g}/\ ext{cm}^3$) of insects and is there a list of animals and their value of body density?
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04/29/19

Does rainwater contain many fewer micro-organisms than river water?
From watching many documentaries on micro-organisms, I can tell water typically contains quite a lot of them. But what about rainwater? (before it hits the ground). I know nothing about any... more
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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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