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

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4
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275 views

Could be an union/synergy between Math, Computer Science and Marine Biology?

I'm studing for my bachelor's degree in Natural Science and I have to chose the path for my future life. I have to chose the right kind of graduate studies. Since I love computer science, maths and ...
2
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0answers
63 views

Mesophytic Climax community in succession?

My textbook says that in all cases of ecological succession (xerarch, hydrarch, etc.), the ultimate climax community, assuming constancy of environment, is a mesic community. Xeric or hydric pioneers ...
7
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1answer
111 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 ...
5
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2answers
180 views

Ecomorphs as evolutionary definitions

There have been demonstrations of ecomorphs in different taxa, where each morphology type is associated to a single environment. I know that it happens because special morphological characters ...
3
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2answers
1k 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 ...
6
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2answers
106 views

Is there theory that connects longevity, time-scale of environmental disturbance, and adaptation?

I'm thinking here about environmental disturbance or like climate change-driven warming. It seems as if there are two macroevolutionary ways to deal with environmental change: 1) Have short ...
2
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2answers
167 views

Change in conditions of an ecosystem lead to change in organisms

Let's think about the slash and burn method and its effects on the ecosystem. Cutting down trees that rise all the way up to the canopy would expose the plants at ground level to more light, so would ...
3
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0answers
71 views

Food Intake versus ability to flee among birds, particularly the hummingbird?

Logically speaking, if a hummingbird drinks too much nectar, it will be temporarily overweight and less able or unable to fly to escape danger. However if the same hummingbird doesn't drink enough ...
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0answers
38 views

To what extent is immature eggs in insects (beetles) a good approximation for maximum fecundity?

To what extent is the number of immature eggs from dissected, newly emerged individuals a reasonable approximation for maximum/potential fecundity in insects (more specifically beetles)? I know that ...
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0answers
33 views

Are there precedents for considering that the coral reef biome has higher biodiversity than rain forests?

I've found conflicting references on which biomes are the most biodiverse ones. Also, which are the measures of biodiversity? Average number of different species per volume?
1
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1answer
45 views

Introductory text for primatology

I'm looking for a book that provides a good overview of primatology, one aimed more at researchers rather than a popular science book. Ideally, I'd like something with an ethology/ecology angle with ...
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0answers
20 views

What controls the southern range of willows?

Many willows (Salix spp.) grow in northern states but do not grow in southern states, for example Salix viminalis. What mechanisms control the southern range of temperate hardwoods such as willow? Is ...
3
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1answer
52 views

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 sp. I plan to ...
4
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0answers
48 views

Does preservation in ethanol alter leaf litter mass?

I have benthic samples that were collected with an Ekman dredge from some small ponds. The samples contain quite a bit of coarse particulate organic matter (CPOM, basically dead leaves). I would ...
8
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2answers
101 views

Where can I find historical data on world-wide ecology parameters?

I hope this is the right StackExchange forum for such a question. I'm looking for large data sets on world-wide ecology parameters, such as annual temperatures by latitude, annual rainfall, CO₂ and ...
3
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2answers
98 views

How would ecology be affected if 100km² of an ocean surface was covered by a floating object?

Assume that we planted floating solar cells on the ocean surfaces. Assume a 100km² solar cell field in the middle of the Pacific Ocean. All of the sunlight will be blocked by them. How would that ...
6
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1answer
123 views

Can jellyfish improve Black Sea environment?

According to this study, cited by many popular science magazines, jellyfish and other, smaller animals can contribute to the vertical ocean stir as much as currents do. Black Sea chemistry and ...
3
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2answers
48 views

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. ...
4
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1answer
78 views

Are there known minimal marine ecosystems that are stable?

A more entertaining phrasing of the question would be "what would a marine ecologist put into a perfect aquarium?" I was reading about Prochlorococcus, among other photoautotrophs, and found that ...
7
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2answers
137 views

Can allelopathy succesfully be used against algal blooms?

Algal blooms caused by man (harmful algal blooms) are a major ecological problem. An excessive amount of algae causes hypoxia and logically, most marine wildlife can't be sustained in hypoxic ...
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2answers
97 views

Will climate change affect flower population?

There is a flower population elevated 1000 meters above sea level. If climate change causes a 12 degree C increase in temperature over the next 10 years, what will happen to the flowers?
2
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1answer
71 views

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 ...
9
votes
1answer
85 views

Vaccination and population dynamics of an epidemic

I'm trying to figure out how should a vaccination model be built to correlate with population density, and I'm having problems to understand meanings of the results I receive when I apply theory on ...
3
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2answers
544 views

Does finite rate of increase depend on mortality of individuals in a population?

As written in my lecture handouts, there two main factors in the Geometric Growth Model of populations: $R_{0}$ is the expected lifetime reproductive output. This way, for unicellulars, for example, ...
5
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3answers
123 views

Does the entire surface of the earth contain organisms?

Does the entire surface of the earth contain organisms? My teacher mentioned that in some parts of the earth, there aren't any organism. Is this true? Thanks in advance.
3
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1answer
132 views

Statement about Tropical Rainforests

I made a statement about tropical rainforests, and I want to know if it's somewhat true or not: The soil in tropical rainforests is not exceptionally fertile, because it contains few minerals. The ...
2
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1answer
69 views

What does self-preservation stem from? [closed]

Self-preservation, or preservation anyway, probably happens throughout the animal kingdom, and perhaps through the plant kingdom as well (some plants/trees, apparently, produce chemicals to repel ...
2
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1answer
53 views

What type of biome is this?

There is a region that gets about 812mm of precipitation and is mildly hot all year long. I believe this region is a tropical savanna, but I'm not 100% sure. Is this correct?
4
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2answers
247 views

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 grazing. What ...
3
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0answers
48 views

Help with designing the analysis of radio telemetry study [closed]

I was wondering if there are any spatial ecologists out there who can provide some insight on the trouble I'm having with my Masters research. I am looking at the association a bat species to high ...
9
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1answer
1k views

Why are some berries poisonous?

In my understanding, the evolutional function of berries is to be eaten and pood out somewhere else, so that the seeds of the plant spread. Is this so? Then why are some berries poisonous?
9
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2answers
132 views

Does artificial high intensity light damage permanently dark ecosystems?

Popular science features on wildlife typically capture camera images using natural light, or high-speed exposures. This is not possible where the ambient light is extremely poor. E.g. Caves, Undersea ...
5
votes
1answer
212 views

Are there any side-effects from a mosquitoes extinction?

Suppose that we have the ability to make mosquitoes extinct, what would the side-effect of such extinction be other than the fact that there won't be any mosquitoes left? Is it worth it to make ...
11
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3answers
250 views

Most suitable biodiversity index

I am conducting an investigation into the effect of two different grass management techniques (grazing vs. machine-mowing) upon floral biodiversity. I have collected my data and now need to process ...
4
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2answers
157 views

Is there a good field methods book that covers terrestrial ecology?

In the past I have used Limnological Analysis by Wetzel and Likens and Methods in Stream Ecology edited by Hauer and Lamberti to develop labs and research methods for courses and projects with an ...
6
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2answers
187 views

Can I compare Shannon indices of metagenome gene data?

I'm comparing 12 Metagenomes. I'm using HMM counts of a number of proteins known to exists as groups within certain operons. I have grouped the HMM counts for each type of operon and calculated the ...
3
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1answer
95 views

How do susceptible organisms prevent parasites from overcoming resistance?

Bt corn is genetically modified to kill borers, but "regulations require farmers to plant conventional varieties as well, which is intended to stop the borers becoming resistant." -Source How do ...
9
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1answer
698 views

How does population stability evolve?

The number of individuals constituting a population is called population size. Over time population size does not remain constant, it fluctuates to different extent over generations because of ...
5
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2answers
127 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 ...
7
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1answer
75 views

Is there a standard format for plant community composition data?

FIA has a nice database of forest Inventory data, this would be great except that it does not seem capable of handling data from non-tree species (e.g., grasslands, wetlands). Is there a standard ...
7
votes
1answer
202 views

Compare and contrast “Rubisco activity” and “assimilation rate” (is there a difference, and if so, what is it)?

I am confused about the variable "RuBisCO activity". How is it measured, and is it any different from the net assimilation rate? Based on some background reading (e.g. Kling, 2008; Lambers et al ...
12
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3answers
218 views

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 need ...
13
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2answers
3k views

How will rising carbon dioxide levels in the troposphere affect photosynthetic producers?

Much discussion has been had about the affects of climate change on plantlife, but how will rising carbon dioxide concentrations affect the photosynthetic process itself? Since CO2 is a reagent in ...
8
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3answers
210 views

Can elements of one's environment act directly as hormones?

Can pollution and things in an organism's environment serve as hormones?
17
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2answers
376 views

Smallest viable reproducing population

What is the smallest viable reproducing population, such as in a human population. By viable I mean a population which keeps genetic defects low (enough). A very strongly related question: what is ...
24
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2answers
327 views

How do biological communities at deep-ocean hydrothermal vents migrate between vents?

Much interest in the astrobiology community has been generated by the discovery of biological communities populating deep-ocean hydrothermal vents (i.e. "black smokers"). (1) These ecosystems rely on ...