Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [species-distribution]

The tag has no usage guidance.

0
votes
2answers
232 views

Can two different species in the same genus generally succeed in the same habitat?

This plant-care website writes In the context of plant care, usually most plants within the same genus need the same environmental conditions suitable for plant growth. If the genus of a plant is ...
7
votes
0answers
148 views

Do ring species exist?

In trying to understand evolution better, I have been looking at examples of speciation, and have thus come across the topic of ring species. I have tried to find concrete examples of how these work, ...
7
votes
1answer
304 views

Orangish-coloured insect living in wood chips

Can anyone Identify this organism? I dug it up in a pile of 5 year old wood chips in Cleveland, Tennessee, United States. It is about 4 inches long.
4
votes
2answers
77 views

Reporting observation of a bird outside its seasonal presence

Last summer I saw this bird in the countryside of Bulgaria (Dobrich area) and I think this is a specimen of Great Grey Shrike (Lanius excubitor). By looking more ...
3
votes
1answer
491 views

Peacock species identification

A few weeks ago I encountered a peacock while driving to a friend's house in Central KY, USA. I don't believe I've ever seen a peacock in KY, and when attempting to ID [just through Google searches], ...
8
votes
1answer
114 views

Estimation of species range fragmentation

While discussing species distribution patterns along spatial, temporal or functional gradients one often finds a hump shaped species richness pattern. This is well documented in many taxa and spatial ...
1
vote
0answers
102 views

Species density project

I am working with data that was collected by an NGO over a 2 year period observing an arboreal primate. Over that period 1797km of survey effort was made within the core habitat area (measured from a ...
0
votes
2answers
2k views

What do we mean by distribution of species? [closed]

What is meant by distribution of species in the following context? density-independent factors tend to limit the distribution of individuals and therefore of species.
1
vote
0answers
19 views

What are important temperature breakpoints for plant distributions?

I am working on a climate classification system. Some previous works like Koppen and Trewartha use temperature breakpoints of 18℃ monthly minimum of daily average to delimit tropical climates, and 0℃ ...
4
votes
1answer
69 views

Aquatic forest insect identification [closed]

I found it in the forest but I've never seen anything like it so I took it home to see what it is. Does anyone know?
3
votes
0answers
103 views

Mechanism for earthworms to get into a roof gutter

While cleaning accumulated muck from a roof gutter on my house, I found a few earthworms living in the muck. I am intrigued about what mechanism may have allowed the earthworms to reach that location. ...
0
votes
1answer
78 views

How diverse are species in remote, isolated areas on Earth? [closed]

If we consider land areas that have been largely isolated from each other from a human point of view, but with a similar climate – for example, a part of Europe and a part of Americas with a similar ...
3
votes
1answer
2k views

How do you know which organisms are keystone species?

I know that keystone species are those that play a crucial role in an ecosystem, but since all species are interdependent upon each other and each occupy their own niche, aren't they all important? ...
4
votes
1answer
1k views

Pink growth (aka pink slime) in bathtub or shower

I was wondering if anybody had studied or was knowledgeable about the pink growth that people often find around water fixtures in their homes, especially bath tubs and showers? My understanding is ...
3
votes
1answer
46 views

Fruit Fly Hybrids

I have a food waste bin in which I put fruit scraps. The fruits come from all over the world, mainly Europe though. I'm in the UK. I assume the fruit Fly eggs are already in the fruit, in which ...
8
votes
2answers
193 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 ...
9
votes
2answers
414 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 ...
3
votes
1answer
174 views

How high into the air are spores of molds commonly occurring?

I understand so far that most of the air surrounding us contains mold spores so that given the right environment and a food source they start to grow. I assume this is true for air close to the earth. ...
3
votes
1answer
105 views

Reconstruction of wildlife distribution based on poorly-sampled data [closed]

cross-posted to Signal Processing, Cross Validated, and World Building Stack Exchange Hi, I thought I'd also put this here in case there are any field biologists with ideas on the matter. Problem: ...
7
votes
1answer
347 views

(Why) are polar bears more common in Labrador than in southern Greenland?

The Labrador Sea is between Greenland, Labrador, and Qikiqtaaluk: Map source. A Greenlandic source on polar bears states: In Greenland the polar bear lives and breeds in the northernmost parts of ...
3
votes
1answer
1k views

How does the ideal free distribution work?

I have recently completed a study on Brent Goose. I found that Brent Geese occupy high quality habitat first then once this is full of geese, they fill up low quality habitat. However, there were ...
1
vote
1answer
23 views

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 to ...
4
votes
1answer
193 views

Using Canonical Correspondence Analysis on matrices with missing data

I have a matrix of sites where not all the environmental variables I want to assess were sampled. In other words, there are sites with the whole set of variables sampled, and there are other sites ...
9
votes
3answers
2k views

Is there a hypothesis that attempts to explain patterns of species richness along all three energy-related environmental gradients?

My question is related to one of the oldest question in ecology: "What determines global patterns of species richness?". However, I want to focus on one particular part of this question, which has ...
2
votes
1answer
385 views

How do I compare the variance of a distribution of species in one area versus another?

It's possible that this question is better suited for stack overflow, but I think the ecologists on this site might be better equipped to answer it. I'm trying to study two geographically-isolated ...