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Related Concept Videos

Distribution and Dispersion00:54

Distribution and Dispersion

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To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
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Migration00:53

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Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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Speciation Rates01:07

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Habitat Fragmentation02:31

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Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
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Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
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Related Experiment Video

Updated: May 27, 2025

Building an Enhanced Flight Mill for the Study of Tethered Insect Flight
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A Mechanistic Approach to Animal Dispersal-Quantifying Energetics and Maximum Distances.

Caitlin Wilkinson1,2, Ulrich Brose1,2, Alexander Dyer1,2

  • 1German Centre for Integrative Biodiversity Research Halle-Jena-Leipzig, Leipzig, Germany.

Ecology Letters
|February 20, 2025
PubMed
Summary
This summary is machine-generated.

We created a bioenergetic dispersal model to quantify animal energy loss during movement. This model predicts maximum dispersal capacity, aiding conservation efforts by understanding landscape connectivity and species persistence.

Keywords:
birdbody sizefishlocomotion modemammaltraitstransfer

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Area of Science:

  • Ecology
  • Bioenergetics
  • Conservation Biology

Background:

  • Dispersal is a key ecological process influencing species distribution and survival.
  • Quantifying energy expenditure during dispersal is challenging across diverse taxa.
  • Large-scale displacements during dispersal lead to significant energy losses impacting fitness.

Purpose of the Study:

  • To develop a mechanistic, bioenergetic model for quantifying energy expenditures during animal dispersal.
  • To predict maximum dispersal capacity based on species traits and landscape configuration.
  • To integrate bioenergetic principles into ecological models for broader applications.

Main Methods:

  • Developed a bioenergetic dispersal model balancing energy storage and loss during active movement.
  • Model parameters derived from fundamental ecological processes and species traits.
  • Compared model predictions of maximum dispersal capacity with empirical data (n=1571).

Main Results:

  • The model successfully quantifies energy expenditures during dispersal based on landscape and species traits.
  • Predicted maximum dispersal capacities align with recorded dispersal distances.
  • The bioenergetic approach provides a generalizable framework for dispersal research.

Conclusions:

  • The bioenergetic dispersal model offers a robust method for estimating energy costs and dispersal limits.
  • This framework enhances ecological modeling (e.g., food-web, meta-community models) by incorporating dispersal energetics.
  • Quantified dispersal capacities are crucial for understanding landscape connectivity, species persistence, and informing conservation strategies.