Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
close in populations
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "close in populations" is correct and usable in written English.
It can be used when discussing the similarity or proximity of population sizes between two or more entities, such as countries, cities, or groups. Example: "The two neighboring countries are close in populations, making resource allocation a shared concern."
✓ Grammatically correct
Science
News & Media
Alternative expressions(19)
of a comparable age
close in age
are in age
close in overhead
similar age range
not far apart in age
closest in age
close in sequence
close in management
nearly the same age
of similar vintage
ends in age
around the same age
within a few years of each other
closely in age
near in age
greater in age
closeness in age
approaches in age
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
For example, D. discoideum strains that are found in close proximity in populations in North America will readily form chimeras with no measurable segregation [ 14].
Science
The remaining four prospectively designed studies were carried out in general practices and were therefore closer in population terms to the BALLETS cohort.
Science
Second, because of the geographic location of these institutions in the Middle East, they are close to populations in Asia and Africa where high impact global health research is being carried out and needs to be strengthened further.
News & Media
19% of individuals from these populations have ROH over 16 Mb in length, consistent with the high prevalence of consanguineous marriage (marriage between individuals who are second cousins or closer) in these populations [11].
Science
In other words, the phenotypes of individuals living in populations close to range margins differed from individuals of the same species living in more centrally located populations more than would be expected from geographic separation alone.
Science
Genetic assignment to the other sample localities is also lower in populations close to the distribution gap between La Junta (8) and Ojochal (9) indicating that gene flow and genetic diversity are reduced in peripheral populations.
Science
The persistent finding of EBLLs in populations close to the landfill, even when water source was included in the regression model, is also concerning and merits further investigation to assess other possible routes of exposure.
If hybridization has resulted in the establishment of specific asymmetrical partner preferences, these could have arisen relatively soon after admixture [ 5] and should be detectable in populations close to the centre of hybridization.
Science
Under natural conditions, only 26% (N = 100) of the stigmas were found to be closed in the population HLG, but most stigmas in hand-pollinated flowers (92.5%, N = 80) remained closed for the remainder of floral lifetime.
Science
Long-term prospective studies of circulating vitamin D concentrations can examine a range of exposure levels, can assess long-term health outcomes in populations closer in terms of characteristics to the general population than those included in clinical trials, and may cost-effectively examine the association between dose and multiple rarer outcomes.
According to a study by Menna Jones, "gene flow appears extensive up to 50 km", meaning a high assignment rate to source or close neighbour populations "in agreement with movement data.
Wiki
Expert writing Tips
Best practice
When discussing population distributions and relationships, clarify whether you are referring to geographical proximity, population size similarity, or both. This ensures clarity and precision in your writing.
Common error
Avoid using "close in populations" when you actually mean populations with similar characteristics (e.g., demographics, health status) but are not necessarily geographically near each other. Be precise about what 'close' refers to.
Source & Trust
60%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "close in populations" functions as a prepositional phrase, often used to modify nouns or clauses by specifying a relationship regarding proximity or similarity in population sizes. This is supported by Ludwig's analysis, which identifies the phrase as grammatically correct.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "close in populations" is a grammatically sound phrase used to describe populations that are either geographically near each other or have similar population sizes. Ludwig AI indicates that while correct, it lacks frequency. It's important to provide context when using this phrase to avoid ambiguity, clarifying whether you're referring to geographical proximity or population size similarity. Alternatives such as "populations in close proximity" or "similar population sizes" may offer greater clarity depending on the intended meaning. Pay attention to whether the two groups are similar in demographic or geographically close.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
populations in close proximity
Rephrases to highlight the nearness of populations.
similar population sizes
Focuses on the similarity of the population count rather than the proximity.
comparable population numbers
Highlights the comparability of population figures.
closely situated populations
Focuses on the spatial arrangement of the populations.
adjacent populations
Emphasizes the geographical nearness of populations, less on their sizes.
neighboring populations
Similar to 'adjacent populations', stresses the proximity.
proximate populations
A more formal way to describe populations in close physical range.
densely packed populations
Shifts the focus to density rather than mere proximity or similarity in size.
populations with similar density
Emphasizes similar population density instead of overall population size.
relative population sizes
Indicates a comparison of population sizes without specifying proximity.
FAQs
What does "close in populations" mean?
The phrase "close in populations" typically refers to populations that are either geographically near each other or have similar population sizes. Context is essential to determine the intended meaning.
How can I use "close in populations" in a sentence?
You might say, "The genetic makeup of "neighboring populations" often shows similarities due to gene flow, especially if they are close in populations."
What are some alternatives to "close in populations"?
Depending on the context, alternatives include "populations in close proximity", "similar population sizes", or "adjacent populations".
Is it better to say "similar in population" or "close in populations"?
"Similar in population" is generally clearer when referring to population size. "Close in populations" can be ambiguous and may need additional context to clarify if you mean geographical proximity.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
4.1/5
Expert rating
Real-world application tested