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Ecology is the study of how organisms interact with their environment and with one another. An important aspect of ecology is understanding where species are found and how individuals are distributed within those areas. The geographic range of a species refers to the total area where its members are located, while dispersion describes the pattern of spacing of individuals within that range.Geographic Range and Dispersion PatternsWithin a species’ geographic range, individuals may be distributed...

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Related Experiment Video

Updated: Jun 5, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

Species-range-size distributions: patterns, mechanisms and implications.

¹Kevin Gaston is at the Dept of Animal and Plant Sciences, University of Sheffield, Sheffield, UK S10 2TN.

Trends in Ecology & Evolution

|January 18, 2011

Summary

This summary is machine-generated.

Species-range-size distributions, unlike species-abundance patterns, are increasingly studied in macroecology. Research suggests these distributions are often lognormal, impacting species occurrence, conservation, and biodiversity inventories.

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Area of Science:

Ecology
Macroecology
Biogeography

Background:

Species-range-size distributions (SRSDs) have been historically understudied compared to species-abundance distributions (SADs).
The field of macroecology emphasizes the importance of regional processes in shaping local ecological patterns.
Recent research indicates a shift in focus towards understanding SRSDs.

Purpose of the Study:

To highlight the underappreciated significance of species-range-size distributions.
To discuss the emerging understanding of SRSDs within the context of macroecology.
To explore the implications of SRSD patterns for ecological and evolutionary theory, as well as practical applications.

Main Methods:

Review of existing literature on species-range-size distributions.
Analysis of patterns suggested by current studies.
Theoretical consideration of factors influencing distribution shapes.

Main Results:

A growing body of evidence suggests that species-range-size distributions are generally approximately lognormal.
The interpretation of these lognormal patterns is complex and influenced by various factors.
The evolutionary and ecological drivers of species occurrences, as reflected in SRSDs, require further investigation.

Conclusions:

Species-range-size distributions hold significant implications for biodiversity research.
Understanding SRSDs is crucial for accurate faunal and floral inventories.
The patterns observed in SRSDs have direct consequences for conservation strategies and biodiversity management.