8 votes
Accepted

At what temporal scales do forest structures change?

This question is too broad. What type of temperate forest? The European Environment Agency recognized dozens of temperate forest types: ...
theforestecologist's user avatar
6 votes

Can multiple cetacean species communicate?

Do dogs and humans communicate? What about cats and dogs? I think defining "communicate" is the real question here. This 2012 study claims to show "the first experimental evidence that the ...
DavidR's user avatar
  • 126
6 votes
Accepted

What are the predators of Glaucus atlanticus?

Try out using Google Scholar to take a more scientific literature-based approach to your search. Frick et al. (2009)1 found that about 42% of logerhead sea turtle (Caretta caretta) stomachs contained ...
theforestecologist's user avatar
5 votes
Accepted

How is the carrying capacity of a logistic growth model calculated?

@Remi.b is correct that you haven't given us very much information, but I think we can reconstruct what's going on. Suppose the population growth rate is written out as $$ \frac{dN}{dt} = N ( b - \...
Ben Bolker's user avatar
  • 5,354
5 votes
Accepted

Book about ordination in ecology

I took a class in ordination methods a few months ago and found the following books helpful in better understanding the various techniques: Multivariate Statistical Methods: A Primer by Brian Manley ...
Jenny Hansen's user avatar
5 votes
Accepted

Biological meaning of Lotka-Volterra Jacobian matrices

The Jacobian tells how the system changes along different state variables (which can be, for instance, the concentrations of the predator and the prey). The Jacobian matrix by itself doesn't give you ...
WYSIWYG's user avatar
  • 35.5k
5 votes

Why do pine stands exist?

Forest Succession 101 Pines are actually fast-growing, shade-intolerant, early-successional species. When land is allowed to lay fallow after being cleared by fire, wind storms, human land use or ...
theforestecologist's user avatar
5 votes

What is the best way to calculate the biological diversity of samples from bacterial/viral OTU tables?

I mostly concur with @Nathan's answer, and in particular with the references he provided. As Shannon & Simpson indices can ...
Lymond's user avatar
  • 51
5 votes
Accepted

How selective are wolves about the size of their prey?

You should not post here until you've demonstrated your own research effort. Given this stipulation -- and the rich literature about this very topic -- I will keep my answer cursory so as to act as ...
theforestecologist's user avatar
4 votes

How do communities relate to food webs?

The Details Ecological communities are groups of multiple (2+) species of either plants, animals and/or other organisms that interact in a unique habitat. More accurately (from Wikipedia and ...
theforestecologist's user avatar
4 votes
Accepted

What does a climax community lead to?

As pointed out by @bshane it seems your question is answered by the definition. From the relevant wikipedia articles "A seral community (or sere) is an intermediate stage found in ecological ...
rg255's user avatar
  • 16.1k
4 votes

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

There can be perhaps 10 trillion rodents and bats on the planet, so the humans and livestock probably are small compared to a rainforest rodents and bats. The biggest bat colony is 40 million, they ...
bandybabboon's user avatar
  • 10.4k
4 votes
Accepted

Is spiders building webs on plants an example of mutualism or commensalism?

You're thinking too broadly and rigidly about these concepts -- both commensalism and mutualism are types of interspecific interactions. Commensalism is when one species in a given interaction is ...
theforestecologist's user avatar
4 votes

Overly stabilised population dynamics model

In a deterministic system, there are 2 options: equilibrium or collapse. It sounds like you've found an equilibrium. This is probably expected! Classic Lotka-Volterra makes specific deterministic ...
Maximilian Press's user avatar
3 votes

does more biomass mean more energy?

tl;dr I think you're right and your textbook is wrong. It would be interesting to know (a) what textbook this is (maybe it's the same as the one I quote below?) and (b) what your teacher says if you ...
Ben Bolker's user avatar
  • 5,354
3 votes

Book about ordination in ecology

You might also want to consider: Tree diversity analysis by Kindt and Coe 2005. Freely and legally available here. Not very deep but nice and crisp introductions + its free. Numerical Ecology with R ...
JonJup's user avatar
  • 31
3 votes

Can I compare Shannon-Wiener diversity indices between plots of different sizes (area)?

Theoretically the index for two habitats of different areas are not directly comparable. Consider the species area relationship. You see more species when you look over a larger area. So you will ...
Shawn's user avatar
  • 425
2 votes

What is the best way to calculate the biological diversity of samples from bacterial/viral OTU tables?

The vegan package is suitable for your needs, but you may find you need to use others or code your own functions. Due to sequencing biases, you shouldn't trust ...
Nathan's user avatar
  • 166
2 votes

How to use Transect-based sampling to select sample trees

More detail on what your studying, the question you want to answer, and how you want to go about doing it would be very helpful. But I can answer this basic question of how to select tree's with a ...
Shawn's user avatar
  • 425
2 votes

what does 'invoking the ghost of competition past" mean? Why is it important for present research on interspecific competition?

First, the setting for this question is almost always related to explaining some aspect of broadly defined trait differences in extant (currently-living) species. The specific problem at hand is one ...
Plantaloons's user avatar
2 votes

Is there any research on wolf and bobcat interactions?

In Sweden, no clear evidence have been found for interactions between wolf and European bobcat (Lynx lynx), see Wikenros et al, 2010. There, they have studied effects of wolfs on the survival of Lynx ...
fileunderwater's user avatar
2 votes

Species richness corrected for area -- should area be log-transformed?

Let me offer my answer even though I have not worked in ecology. You are asking two questions if I understand you correctly: Should you normalize to the area sampled? The answer to that depends on ...
vkehayas's user avatar
  • 1,198
2 votes

How should you choose from the various methods of constrained ordination?

You might want to check out Mike Palmer's webpage on ordination, specifically the constrained ordination section: http://ordination.okstate.edu/ The main difference between constrained ordination ...
Nathan's user avatar
  • 166
2 votes

Is urban beekeeeping harmful or are there good practices to follow?

Beekeeping in urban areas often require that beekeepers supplement their colonies with feed since urban areas have, on average, very little forage available to sustain a colony year-round. There are ...
Werner's user avatar
  • 141
2 votes

Is spiders building webs on plants an example of mutualism or commensalism?

For the scenario you laid out, the short answer is yes. Like @theforestecologist pointed out, interactions can be complex and contingent. Although, in the example you give, it can be easily tested: ...
Chris Moore's user avatar
2 votes

Ecology: Indices to calculate species overlap in a community?

If you only care about direct overlap, this sounds like a case for classical correlation coefficients. These answer you whether a high abundance of Species A coincides with a high abundance of Species ...
Wrzlprmft's user avatar
  • 585
1 vote

Animal body size determination for abundance

I'm sympathetic to @Dirigible that this seems like the kind of thing that should be easy to research, but I was surprised to see that there's not an answer to this already on SE.Biology. So very ...
Maximilian Press's user avatar
1 vote

Did the construction of the Panama Canal lead to a huge change in the local marine ecology?

The panama canal is not just a long contiguous connection between the two oceans as you might think. It operates under a system of locks of varying height because the surrounding region is actually ...
Matt's user avatar
  • 49
1 vote

Relation between biomass and radius of roots system

Your question specifically asks for an equation which gives root radius and your sample equation is for typical root length, neither of which I'm aware of. However, there is a known relation between ...
nicfit's user avatar
  • 138

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