Interactions and relationships among organisms and their environment. This includes biotic and abiotic (non-living/environmental) factors that impact organisms.

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Are there inherent problems in simulating marine environments, as compared to terrestrial systems?

We cultivate a number of terrestrial organisms in greenhouses and stables where they live in completely artificial environments. This seems to extend far less to marine organisms, such as fish. ...
5
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0answers
47 views

Is high metabolism linked to high evolutionary turnover?

I recently read The Dinosaur Heresies by Robert T. Bakker, a 1986 popular science book presenting arguments for an active lifestyle and high metabolic rate in dinosaurs. One of the arguments that ...
5
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0answers
215 views

What are the branches of system ecology?

What are the branches of system ecology that scientists research in nowadays? Or what can system ecology can applied to, or be used? I have read its Wikipedia page, but sadly it doesn't answer my ...
8
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1answer
96 views

Do camels pose an environmental threat to kangaroos?

Camels, once used for transport across the Australian outback, were set free, and are reproducing at an uncontrolled rate in the empty interior of Australia. Do the ecosystems of camels and ...
4
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1answer
246 views

How can omnivores be in more than one trophic level?

I'm learning about the ecosystem and its relation to organisms, So organisms in a food chain can be put from producers to tertiary organisms. I just don't get the part where an organism can be labeled ...
8
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1answer
3k views
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1answer
36 views

In terms of ecology what is optimality? [closed]

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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1answer
92 views

What is enantiostasis?

I have searched around and read my textbook but I am failing to understand how enantiostasis is different to homeostasis. For reference, Wikipedia definition is as follows: Enantiostasis is the ...
6
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1answer
99 views

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 ...
6
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2answers
114 views

Why do some trees in California have dead brown leaves but also new green leaves?

It's Autumn 2015, and I just saw a tree that had mainly dead brown leaves but also some new small green leaves growing. Why didn't the tree just keep its old leaves? Does it think we are in spring ...
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2answers
298 views

Was the recent “conservation hunt” of a black rhino supported by science?

CNN recently covered a sanctioned black rhino hunt in Namibia by Texan Corey Knowlton, who bid US$350,000 for the license. In the story, he claims that the hunt was actually supporting conservation of ...
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1answer
43 views

Parametric Bootstrap Capture Recapture

I am using the (one sample) capture recapture for estimating hidden human population. One sample method uses purely frequencies of capture to estimate population. One of my colleague suggested ...
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2answers
72 views

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

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. ...
4
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1answer
82 views

How far in can non-extremophiles live, in Earth?

I am a high school student. I'm doing a project where I need to find a planet in our galaxy that might be habitable. Then I need to create an organism that could live on that planet and justify ...
6
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2answers
570 views

Is there an antagonistic association between Penicillium and Aspergillus?

Some Aspergillus species appear to like walnuts. My question concerns the association of Penicillium and Aspergillus. No sooner does Aspergillus colonize a walnut (or some other challenging carbon ...
2
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1answer
148 views

Are there any theories using thermodynamics/statistical mechanics or information theory principles to modelling in ecology?

So far, I've only known one: the MaxEnt theory. It uses the maximum information entropy developed by information theorist, which in turn inspired by the thermodynamics from physics, to predict the ...
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2answers
247 views

Examples of prey predator interactions where density of predator is very low and prey form groups when the predator attacks the prey for food

Examples of prey predator interactions where density of predator is very low (has a threat of extinction) and prey form groups when the predator attacks the prey for food. I have searched this ...
4
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1answer
302 views

Do plants have preference for the form of nitrogen as nutrient?

In the nitrogen cycle (ecology), it is usually described that plants can use nitrogen in the form of ammonium (NH4+) and nitrate (NO3-). Do plants prefer one form of nitrogen over the other?
2
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1answer
150 views

How does one calculate the amount of oxygen produced by trees?

I'm currently working on a project to measure the impact of tree planting. Calculating the amount of oxygen seems harder than I imagined. Of-course there's the type and size of the tree and the ...
1
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1answer
54 views

How to determine the relationship of competition or cooperation?

I am currently studying the interaction of Twitter memes (two or many), such as competition and cooperation. Is there any model or method in biology that can identify the types of the relationship, ...
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2answers
77 views

Is this a simple Hardy-Weinberg problem?

Phenylketonuria is a severe developmental disability due to a rare autosomal recessive allele. Approximately 1 in every 10,000 newborns suffer from this disease. Calculate the frequency of the allele ...
11
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2answers
6k views

Can humans transdermally absorb minerals from ocean water, and if so how much?

According to several studies quoted here, chemicals can be absorbed by the skin transdermally, at least under certain conditions. When it comes to elements in seawater like sodium, magnesium, ...
3
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2answers
118 views

Do reptiles hunt?

I encountered the following passage in the book The Art of Interactive Design by Criss Crawford (bold formatting is mine): [...] From stalking and evasion to the chase, the [interaction between ...
0
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0answers
51 views

Hemiptera sp preimago?

Which species of Hemiptera is this preimago, seen in 2015 in Rome?
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0answers
124 views

Species-area relation graph

When species richness is plotted vs area, the graph follows the equation : log S = log C + Z log A where Z is the slope of the line. Z values are usually in the range of 0.1 to 0.2 but if very large ...
3
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2answers
331 views

How does ecology differ from biology?

What precisely is ecology? How does it differ from biology? Because I never studied biology after high school, please explain as if I were 10 years old. I only know that ecology is a subset of biology ...
3
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1answer
1k views

Index of ecological niche overlap

For this question I am interested in the Pianka's 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 ...
2
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0answers
74 views

Bergmann's rule and Allen's rule: endotherms and ectotherms

Surface area to volume ratio (in terms of heat conservation) is not the only mechanism, but it is still an important mechanism for explaining Bergmann's rule and Allen's rule. Given that, I want to ...
3
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3answers
98 views

Are there organisms that have incorporated plastic into their lives?

Are there organisms that have incorporated (manmade) plastic into their lives in any way? Either in their diet, or as a part of their body?
2
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1answer
40 views

Algae and greenhouse effect

Just a thought: the CO2 concentration is increasing . Due to a different but possible related phenomenon, the algal blooms are on the rise. We humans want to control both. But algae are the major ...
5
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2answers
200 views

Difference between biological control and introducing species for conservation?

I have a biology assignment and we have to explain various methods and strategies for conservation, two of which are: Biological control Introduced Species What is the difference between ...
5
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1answer
46 views

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 many ...
6
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1answer
172 views

Effects of selection on effective population size

Background The effective population size ($N_e$) is a central concept of evolutionary biology and is influenced by several parameters. For example: sex ratio bias affects $N_e$ $\left(N_e = ...
2
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1answer
35 views

Trial pre-registration service that accepts non-clinical trials, or specifically ecology?

I'm in the early stages of designing a trial in ecology. I'm interested in pre-registering the trial, as suggested here. My concern is that all of the registries (that I can find) deal specifically ...
3
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1answer
316 views

Parasitism and mimicry

I was reading this article which states this: Classical Batesian mimicry, in which an undefended mimic evolves to look like a toxic model, is a parasitic relationship in which the mimic gains ...
2
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1answer
50 views

How do we call a region of low carrying capacity?

I am looking for a convenient word to define a region of the landscape where the local carrying capacity (population size) for a given species is low but different from zero. The species is still ...
10
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1answer
458 views

Does the cell internal temperature changes in response to a change in external temperature?

Background Some species are homeotherm (internal temperature is not affected by a change in external temperature) and some are poikilotherm (internal temperature changes in response to external ...
4
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1answer
71 views

History: Do evolutionary and ecological processes occur at the same timescales?

Classically, it was thought that evolutionary processes occurred at a much slower pace than demographic/ecological processes. Nobody, ever thought about incorporating both processes into the same ...
3
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1answer
303 views

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

Can I compare the Shannon-Wiener (a.k.a. Shannon-Weaver) Index of diversity ($H'$) of plots (communities) with varying sizes (areas)? If not, what steps do I need to take and/or which tests should ...
6
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2answers
106 views

How do animals end up in remote areas?

I was thinking specifically about random marshy water holes on farmers fields. It seems that you can visit just about any one of these and you will find frogs if you look hard enough. They usually ...
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0answers
21 views

Will bark-beetles infest the Methow Valley?

What is the Methow Valley (esp. Winthrop, WA) area's susceptibility to bark beetles? Did the 2014 Carlton Complex wildfires increase the vulnerability due to the large numbers of dead, dying, and ...
5
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2answers
6k views

Why do kefir grains stop growing in soy milk?

Kefir is a fermented milk drink made with kefir grains. It usually is prepared by inoculating cow, goat or sheep milk with kefir grains. I would like to prepare the drink with soy milk, which worked ...
8
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1answer
172 views

Database of Geographic Range of Species

Is there a database of organisms which would contain their queriable geographic location? I would need to perform a rather simple query, such as ...
19
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1answer
1k views

Can beavers control the direction a tree falls?

We humans can easily control the direction a tree falls by making a number of strategic cuts, essentially creating a hinge: This prevents trees from falling on equipment and people and sets them up ...
4
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0answers
51 views

Negative association between habitat quality and reproductive success in birds

I'm looking for bird studies that have found either a negative correlation or no correlation between habitat quality and reproductive success. Or in other words, bird studies that have found that ...
10
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1answer
252 views

Do invasive species cause long-term damage to ecosystems they invade?

Growing up in the U.S., I was warned at various times of the dire consequences of a variety of introduced pests (usually insects). Japanese beetles, gypsy moths, and most recently the brown ...
4
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2answers
952 views

Could we slow down life? [closed]

As far as I know there is no absolute time measurement (one that would measure time in a non-environment-dependent fashion) in any life form. Only such time measurements exist, which are dependent ...
7
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0answers
235 views

What bacteria shed harvestable energy from root zone organic matter?

I recently heard of a successful effort that harvests energy from soil at plants' bases due to apparently bacterial breakdown of wastes from the plants: Via photosynthesis a plant produces organic ...
6
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1answer
102 views

Viruses selected by evolution

First let me apologize in advance for I know almost nothing about biology. I had a conversation today with a family member who is a bio-computer-scientist and he talked to me about what his colleagues ...
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1answer
638 views

Question regarding Rate of Photosynthesis AP Biology Lab

We are doing a lab on the effects of light intensity/wavelength on the rate of photosynthesis in AP bio and we were asked to visit this website here: ...