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Galápagos Finch Beak Measurements
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About
Data tracks over four decades of evolutionary changes in Darwin's finches on Daphne Major Island, Galápagos. The collection spans from 1973 to 2013, documenting environmental shifts and their resulting impact on natural selection. This data focuses specifically on finch beak dimensions, which are key traits that vary to adapt to ecological pressures. The observations illustrate natural selection in action and have been cited as an example of evolution occurring before our eyes.
Columns
The dataset includes specific measurements and identifiers, typically covering the following structure:
- band: An index or identification number for the specific finch.
- species: The species of finch observed, primarily Geospiza fortis and Geospiza scandens.
- Beak length, mm: The linear measurement of the finch's beak, recorded in millimetres.
- Beak depth, mm: The depth measurement of the finch's beak, recorded in millimetres.
Distribution
The full data collection consists of four distinct files, covering beak measurements from 1975 and 2012, alongside hereditary information for both G. fortis and G. scandens beak depth. Data files are usually provided in CSV format. The sample file (Finch Beak 1975) contains 403 valid records across 4 columns. Specific row counts for the entire four-file collection are not explicitly detailed.
Usage
This data is highly valuable for studying microevolution and the mechanisms of natural selection. It is ideal for Exploratory Data Analysis, especially visualising trait shifts over time, and for various forms of Statistical Analysis. It can be used to verify ecological theories and examine the relationship between physical traits, like beak size, and environmental events.
Coverage
- Geographic: Observations were meticulously collected on Daphne Major Island in the Galápagos archipelago.
- Time Range: The study period covers over 40 years, specifically 1973 through 2013. Individual measurement files detail data from 1975 and 2012.
- Scope: The data focuses on two species of Darwin's finches: Geospiza fortis and Geospiza scandens.
License
CC0: Public Domain
Who Can Use It
Intended users include Biologists and Researchers focused on evolutionary science and ecology. It is suitable for Students conducting statistical projects or seeking real-world longitudinal data for modelling. It is also useful for Educators demonstrating the principles of Darwin's theory of evolution.
Dataset Name Suggestions
- Galápagos Finch Beak Measurements
- 40 Years of Finch Evolution Data
- Natural Selection Records from Daphne Major
- Darwin's Finches Evolution Dataset
Attributes
Original Data Source:Galápagos Finch Beak Measurements
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