Accounting for central place foraging constraints in habitat selection studies

Area of Science:

• Ecology
• Wildlife Biology
• Spatial Ecology

Background:

• Habitat selection studies compare actual space use to neutral use.
• Central place foragers (CP foragers) exhibit biased space use due to proximity to their central place (CP).
• Existing methods often fail to correct for this bias, impacting ecological understanding and conservation.

Purpose of the Study:

• To address the bias in habitat selection studies of CP foragers.
• To develop a method for accurately estimating habitat selection in CP foragers.
• To improve ecological understanding and conservation planning for CP foragers.

Main Methods:

• Contrasting actual space use with an appropriate neutral use model that accounts for CP forager behavior.
• Evaluating the effectiveness of including distance to CP as a covariate in Resource Selection Functions.
• Proposing a conditional approach to bypass the need for specifying overall neutral use distribution.

Main Results:

• Including distance to CP as a covariate in unconditional Resource Selection Functions is ineffective for bias correction.
• The bias in habitat selection studies for CP foragers can be eliminated by using a neutral use reflecting CP forager behavior.
• A conditional approach simplifies the assessment of neutral use, regardless of distance to the CP.

Conclusions:

• Accurate estimation of habitat selection for CP foragers requires accounting for their specific movement patterns.
• The proposed methods offer a more reliable way to study CP forager ecology.
• Improved understanding of CP forager habitat selection is crucial for effective conservation strategies.