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Questions tagged [ecology]

The study of the spatial and temporal patterns of the distribution and abundance of organisms, including causes and consequences (Scheiner, S.M. and Willig, M.R., 2008. A general theory of ecology. Theoretical Ecology, 1(1), pp.21-28. doi:10.1007/s12080-007-0002-0)

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Calculating basal area per acre from variable radius plots

I have a variable-radius forest inventory that contains diameter at breast height (DBH) and basal area factor (BAF) data for each tree. I'd like to calculate the basal area per acre, but since the ...
brlockwood's user avatar
1 vote
1 answer
63 views

How to correctly assess the impact of invasive species on a community using the diversity index?

How can the impact of invasive species on a community be correctly assessed using the diversity index if the abundance of the target species, i.e. the invasive species, is not used to calculate the ...
benjamin jarcuska's user avatar
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How long does it take for a creature to adapt for a different diet?

For the sake of the question, let's say that a population of piscivorous birds are put in a Europe-sized box. Half of the box is sea, populated with their diet of fish and crabs and cephalopods, and ...
Craig Morrison's user avatar
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0 answers
44 views

In search of motivation (Examples from nature) for reaction-diffusion systems with a conservation law

I'm an applied mathematician with a huge interest in mathematical biology. While looking at this paper, I came across with the following: Examples of reaction-diffusion systems (1)-(2), falling into ...
kaithkolesidou's user avatar
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0 answers
24 views

How fast could the Amazon rainforest regrow after deforestation?

We hear a lot about clear-cutting of the Amazon rainforest and how that affects climate change. However, are there any studies on how fast areas of rainforest can regrow or the ecosystem can recover ...
user2352714's user avatar
0 votes
0 answers
37 views

Converting m/s to body lengths / s

I am trying to calculate speed of fish in body lengths / s. As of now, I have speeds for each of my individuals in m/s. To convert each individual fish's speed in body lengths / s (bl/s; using each ...
fishlakeslimno's user avatar
0 votes
0 answers
43 views

Evolution of Anoles

For context, I am currently looking at this virtual lab of Lizard Evolution by HHMI biointeractive. Trunk anoles from an island called Iron Cay were placed in a few experimental islands filled with ...
Branzzzz's user avatar
2 votes
0 answers
22 views

Ecosystem naming discrepancies between LANDFIRE ESP and GAP/LANDFIRE National Terrestrial Ecosystems 2011 Datasets

first post here! I am working on a project using the LANDFIRE ESP (environmental site potential) categories, and saw that on NatureServe Explorer I could find broader classifications for the ...
estz2's user avatar
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2 votes
0 answers
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How do Addax defend itself from predators?

The addax (Addax nasomaculatus) is a critically endangered antelope adapted to live in extreme desert conditions. It has long impressive horns that can potentially serve as a weapon because they are ...
Triceratops's user avatar
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1 vote
1 answer
56 views

Why are polar seas rich with nutrients and plankton?

It is well known that baleen whales migrate to the polar seas to feed on plankton and krill (marine crustaceans). The question why are the polar seas rich with krill and plankton? If the answer "...
Triceratops's user avatar
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1 vote
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Can bees find alternate sources of water which mosquitoes can't use?

I live in an area where mosquitoes are a disease vector of concern, and I was dutifully sweeping out a puddle when I noticed a lot of bees had gathered there to collect water. Is this effort to ...
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Introduction of critically endangered South Asian species to South America

I have in mind in particular orangutans but don't want the question to be that specific, so the answers about other species will be equally welcome. Orangutans are endangered or critically endangered ...
Dmitrii Korshunov's user avatar
2 votes
1 answer
85 views

What factors allow some species to outcompete species formed by the local environment and become invasive?

If an invasive species is introduced to a new environment, why can they outcompete local species in the same nische, if they specifically evolved in this local environment and are adapted to it, ...
Qoray's user avatar
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2 votes
1 answer
48 views

Hypothetical violation of independence assumption for linear models

Let's say I have measured the abscisic acid content (could be any metabolite really) of 10 individual plants which we can consider biologically independent. Then I repeat that measurement for all 10 ...
Luke Richards's user avatar
1 vote
0 answers
25 views

Which species of iron-reducing bacteria are hyper-sensitive to copper?

I would like to know which species of iron-reducing bacteria are inhibited in their iron metabolism by a copper concentration of less than 500 nano moles per litre. Searching the internet, I can only ...
Shaun Ross's user avatar
0 votes
0 answers
16 views

Estimation of carbon stock value

I would like to ask, to calculate the carbon value estimation, the Allometric formula is of course used, but in some of the literature I searched, I found different allometric formulas but the same ...
ana's user avatar
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1 vote
0 answers
32 views

How should I analyze proportional community data, in respect to habitat variables?

I want to analyze how the proportions of groups of species in a biological community correlated to habitat variables. I have 6 functional groups, defined by their similar traits, and I want to know ...
Jaxson Priest's user avatar
1 vote
1 answer
57 views

Why were vegetation coverages not assumed to be affected by precipitation, humidity or temperature?

I am trying to understand the graph topology of the structural equation model (SEM) given in Figure 1 of Bisset et al 2023. It is stated in the paper that it reflects an a priori causal structure. I ...
Galen's user avatar
  • 1,045
0 votes
0 answers
39 views

Phonotaxis and Preference

(Am I losing my mind?) I could have sworn there was solid research indicating that phonotaxis evidence for preferences (during ex situ experiments) was "held up" by en situ experiments...(by ...
Maddy M's user avatar
0 votes
0 answers
26 views

High value weed or plant that can replace the chemical treatment of pesticides and herbicides?

I'm working on a project that aims to replace (at least lower) the use of chemical pesticides and herbicides in farming with the use of high value weeds and plants that can naturally replace the ...
Wissem Boujlida's user avatar
1 vote
0 answers
279 views

The Contradiction in Soy Production: Livestock Feed versus Human Consumption?

I'm not sure if this is the right place to ask this ecological question. I apologize for any inconvenience, and please let me know if it is. There is a contradiction regarding soy production and its ...
Amir Riazi's user avatar
2 votes
4 answers
593 views

Where do the bones of dead animals go?

I've spent quite a bit of time in the wild, but I've seen little to no bones lying on the ground. Large bones such as skulls, spines, horns, hooves are not eaten by any other animals, and even ...
Vladimir Orlov's user avatar
3 votes
0 answers
37 views

What would actually be the ecological impact of deep sea mining?

In the last few months I have read a number of articles with increasing alarm concerning the potential of many countries soon engaging in deep sea mining. The idea is that in order to produce numerous ...
Isky Mathews's user avatar
1 vote
1 answer
99 views

Models of evolution by positive versus negative selection

I am making a program for simulating natural selection. Now, I have discovered an interesting difference between positive selection and negative selection. Positive selection occurs when the ...
A Fog's user avatar
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1 vote
1 answer
86 views

Datasets for Genetic Diversity of Species Across Geographical Distribution

I'm carrying out some research on applying machine learning methods to ecology and conservation. I'd like to know: are there some datasets on genetic diversity across geographical positions? ...
Shiran Yuan's user avatar
8 votes
4 answers
454 views

When do invasive species become native species?

Until when an invasive species is considered an "invasive species" and when it is starting to be considered a "native" species, i.e. a species that is an integral part of the local ...
Triceratops's user avatar
  • 1,176
2 votes
0 answers
41 views

Could trophy hunting lead to deer evolving to lack antlers?

There was a recent paper in Science which showed that elephants are quickly evolving tusklessness because elephant hunting imposes selective pressure against having tusks: Shane C. Campbell-Staton et ...
Betterthan Kwora's user avatar
0 votes
0 answers
29 views

Quantifying species detection probability using sign surveys as a function of distance in known occupied sites

I ran a pilot study to determine the probability of detecting a rare African small carnivore using scat (feces) detection dog surveys to assist with future population monitoring and occupancy surveys. ...
Michelle's user avatar
0 votes
0 answers
16 views

Ecological regime shifts and natural resource variability

I am thinking of the interaction of two different uncertainties; ecological regime shift uncertainty and natural resource variability. For example, for fishes, we know that the fish stock is exposed ...
optimal control's user avatar
3 votes
0 answers
52 views

Does Ramon Margalef really stated in 1972 general criteria for Shannon-Wiener index interpretation?

I work as field biologist in Chilean System of Environmental Impact Assesment. Several reports made by colleagues use Shannon-Wiener index for characterizing the richness study area, with the ...
felipekare's user avatar
2 votes
0 answers
70 views

How does an engineered supressive Lethal (when present in 2 copies) gene drive spread through a population until causing population extinction?

I understand that at the molecular level a CRISPR mediated gene drive works by copying the altered gene (and the drive containing CAS enzyme, and guide RNA) into the other chromosome containing the ...
Sanjay Biswas's user avatar
1 vote
1 answer
87 views

How selective are wolves about the size of their prey?

For an animal that lives and hunts socially like a wolf, is there a lower threshold to the size of prey items they will hunt? A pack wouldn't have much trouble with catching say a rabbit, but would ...
pbuchheit's user avatar
  • 113
12 votes
1 answer
3k views

Would fewer cows mean less methane emission?

Rotting grass produces the same amount of methane as cows that digest grass (see this source). So if cows did not eat the grass, it would still emit methane. Therefore, if there were fewer cows, would ...
Riemann's user avatar
  • 235
4 votes
3 answers
315 views

Why is livestock bad for the climate?

It is always told that eating meat is bad for our climate. This is most often explained by mentioning following reasons (Source): Methane is produced when digesting the food and also the faeces of ...
Lockhart 's user avatar
1 vote
0 answers
41 views

How do I construct sample-based rarefaction curves if the area (or volume) sampled is not consistent between samples?

My apologies if a similar question has been asked previously but I cannot find an answer. I have data from multiple zooplankton tows from different study sites and I am trying to construct sample-...
planktonQ's user avatar
5 votes
1 answer
62 views

Larval abalone devlopmental times - what does ~ °C.days or °C hr-1 mean

I'm looking a number of papers on abalone larval development and the term °C.days or °C hrs-1 keeps coming up. The numbers before these terms are much larger than they would be if this term actually ...
timeywimey's user avatar
1 vote
0 answers
57 views

Confused About Why Red Queen Hypothesis Wouldn't Apply to Deer's Color Vision [duplicate]

In this site,https://www.livescience.com/why-are-tigers-orange, it says ""But there seems to be no evolutionary pressure, particularly for deer, which are the main prey of the tiger, to ...
MeltedStatementRecognizing's user avatar
1 vote
0 answers
51 views

Do moose usually browse woody foilage approximately perpendicular to the long axis of the branch?

I am trying to improve my understanding of moose browsing behavior. One basic question is whether browsing on woody vegetation can tell us anything about the orientation of the moose's head. The ...
Galen's user avatar
  • 1,045
0 votes
0 answers
51 views

What is the difference between "ecological succession" and the term "stage of regeneration", is there a difference between them?

In ecology what is the meaning of the term "ecological succession" and the term "stage of regeneration", is there a difference between them? Edit 1: Perhaps the term "Stage of ...
wesleysc352's user avatar
2 votes
1 answer
269 views

Examples of bifurcations in real-life systems

Does period-doubling bifurcation and Neimark-Sacker bifurcation happen in real-life systems? Are there some examples? I'm particularly interested in biological host-parasitoid and predator-prey models....
User154's user avatar
  • 123
3 votes
1 answer
188 views

Ecology: Indices to calculate species overlap in a community?

Experimental design: I sampled the abundances of four species for each month of the year. I did this across 6 sites. I want to calculate the temporal niche overlap for all the species at each site. ...
verbose's user avatar
  • 131
1 vote
1 answer
251 views

What could be a refuge in host-parasitoid models

I was reading about refuge effect in host-parasitoid models and I found somewhere that refuge does not have to be only a place in habitat where hosts can hide, but also some "situation" ...
user121's user avatar
  • 125
1 vote
1 answer
70 views

Refuge impact on growth rate

I have a question related to the refuge effect in ecological models. The assumption is that the population of hosts/prey is divided into two groups. One group consists of individuals that are safe ...
user121's user avatar
  • 125
2 votes
0 answers
39 views

Ecosystem Control Theory

I've used EcoNet online tool to analyze an ecosystem. You can run the default model by pressing "run model" in order to follow my question. Among the extended results there are 2 'Control ...
Mirko's user avatar
  • 221
6 votes
2 answers
1k views

Do cheetahs compete with lions?

Do cheetahs compete with lions for the same prey? A quick Google search says the answer is no: Lions hunt big animals such as buffalo, giraffe, wildebeest, and zebra. What prey do cheetahs hunt? ...
rwallace's user avatar
  • 187
1 vote
1 answer
79 views

What unmanned monitoring techniques are available to measure coral reef health?

Most biological data for coral reef monitoring are collected by human observers. This could be resource-intensive for long-term studies and thus hard to maintain consistency on large spatial scale. ...
Karthik Ashok's user avatar
4 votes
1 answer
400 views

Ecology of the environment for the ruffed grouse

I live in a coastal New England town and while reading a local history I noticed frequent mention of the "partridge" as being a commonplace bird in the area. Now, however, this bird which is ...
Imprisoned Rhesus's user avatar
0 votes
0 answers
58 views

Why does the ecosystem of my house seem inverted?

My understanding of a typical ecosystem is that it is like a pyramid, with the mass of prey at the base and the apex predators at the peak. However, the arthropod ecosystem in my house seems to be the ...
SlowMagic's user avatar
  • 525
2 votes
0 answers
94 views

Should soundscape ecology be a component of STEM education? [closed]

I'd like to see soundscape ecology be included in STEM education. I realize there is so much to teach and so little time, but think that primary and secondary students would be highly motivated and ...
user avatar
-3 votes
3 answers
449 views

How long does an Audiomoth acoustic logger record for?

I'm wanting to record bat echolocation calls using an Audiomoth recorder. However, I can't find out anywhere how long these recorders can record for on a full charge. What is the longest duration ...
Matt's user avatar
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