304 Answered Questions for the topic ecology

Ecology

09/01/19

What is the biology behind human population dynamics?
**A paradox:** Human population growth looks a lot like a simple logistic growth pattern. But the simplest interpretation of logistic growth doesn't seem to fit. Is this peculiar to humans, or does... more
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Ecology

08/31/19

Did migratory birds' ancestors live in the places of migration?
I was studying birds' migration as a type of instinctive behaviour. But my textbook points out that other than for warm climate and easy food, migratory bird migrate to places where their ancestors... more
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Ecology

08/30/19

Is there any research on wolf and bobcat interactions?
I'm studying interactions between North American predators, specifically wolves, coyotes and bobcats. There's evidence from data I've collected from game cameras that suggests a significant... more
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Ecology

08/30/19

Why do plants create enough energy for the entire ecosystem?
In my environmental class, we were recently learning about the $10\\%$ law that basically says only $10\\%$ of the energy goes from one trophic level to the next. This got me thinking about *why*... more
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Ecology

08/29/19

In which month should I map maritime vegetation?
I'm studying habitat use by Brent Goose in the UK, a species that feeds on maritime vegetation. It's main food types are *Zostera* sp., *Ruppia* sp., *Ulva* / *Enteromorpha* sp. and *Puccinellia*... more
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Ecology

08/29/19

In terms of ecology what is optimality?
I am studying animal science and I have been learning about reproductive theories however i cant seem to understand the theory of optimality
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Ecology

08/29/19

Classification of degree of infested areas by pine processionary moth on regions?
I'm making a thesis about pine processionary moth distribution on the regions of algeria! i'm making tests about if there are spatial autocorrelation of this insects on the regions. and i'm doing... more
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Ecology

08/29/19

White resin or powder on conifer needles?
I often notice that certain conifers often have a whitish powder on what seems to be their youngest needles, giving them a blue green tint. Does anyone know what this is? Is it something excreted... more
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Ecology

08/28/19

Advantages of gregarious vs solitary behaviour?
I'm trying to explain why birds (specifically wildfowl) are gregarious during the winter and solitary during the summer. I think that in winter, birds are gregarious to reduce the risk of... more
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Ecology

08/27/19

Large coalitions of lions taking over multiple prides?
I have noticed while watching lion documentaries that coalitions with more than 3 males tend to take over multiple prides and have 1 large pride in their territory while coalitions with 3 lions or... more
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Ecology

08/25/19

Are there parasitoids of mosquitoes ? (other than nematodes)?
Outside of nematodes, are there any examples of organisms that are parasitoids of mosquitoes ? I could not find any example in literature so far. I'm notably interested to know if the most known... more
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Ecology

08/24/19

It is correct to construct tree species-based rarefaction curves for birds?
If I register all the species of birds that uses sp1 tree, then, all the species of birds that use sp2 tree, and so on. With this dataset, I can made a rarefaction curve using "number of tree... more
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Ecology

08/22/19

Why do pine stands exist?
I live in the midwestern United States. I cycle to work, sometimes on heavily wooded roads, and I can't help but notice that in most places within the surrounding deciduous forests Pine and... more
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Ecology

08/22/19

Deciduous trees in tropical rainforest?
Some books says the dominant plant form in tropical rainforest biome is broad leaved evergreen trees. Other books say it is broad leaved evergreen trees and deciduous trees. What is the most... more
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Ecology

08/21/19

Almost philosophical question about controlling a pest/plague?
Once in a math congress someone presented a paper on a mathematical model used to predict the impact of certain measures that could be taken in order to control some pest/plague. A guy in the... more
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Ecology

08/21/19

What is the thickness of the biosphere?
In other words, what is the vertical distance between the deepest and highest point on Earth where life is found? Life has been discovered at the [bottom of the Mariana... more
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Ecology

08/21/19

What does the energy in an energy pyramid represent?
Suppose the energy at the second trophic level as given in an energy pyramid is 100 kcal per square metre. It could mean either of the two following things: 1. 100 kcal is the energy this primary... more
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Ecology

08/21/19

Length of dispersal flight of European spruce bark beetle?
I'm interested in length of dispersal flight of *Ips typographus*. I can barely find some information about dispersal distances, height of dispersal flight, but not at all information about how... more
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Ecology

08/21/19

What's the lowest atmospheric pressure a tardigrade can remain active in?
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Ecology

08/20/19

What causes tree lines?
There is an area of where there is a distinct line of only trees on one side and only shrubs on the other (right next to each other). What could cause this? My attempt: I said there could be a... more
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Ecology

08/20/19

Why would a bumblebee regularly hover over a arborvitae hedge?
I have observed bumblebees hover over an a abrborvitae (*Thuja occidentalis*) hedge. A bumblebee will hover in a in one spot over the hedge for about 5-7 seconds, zip to another spot, hover for... more
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Ecology Biology

08/19/19

Which factors may affect a choice of an oviposition place in nocturnal moths?
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Ecology

08/18/19

Determining break/border of movement?
A population given inhabiting an area. I can trace every individual and I've got the hypothesis there is a break in distribution like individuals born in the upper half of the area will rarely move... more
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Ecology

08/17/19

How long does it take to extract a tree core for dendrochronological analysis?
I'm going to do research in the tropics and am considering using tree cores for part of my analysis. However, for my planning: How long does it take on average to extract a tree core of a tree... more
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Ecology

08/16/19

What makes animal to continually reproduce?
I was reading about Trypophobia and reached to Surinam Toad's reproduction methods. Then I had this doubt- Why would animals want to reproduce so much? In case of humans we mostly have the... more
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