Species Range Dynamics and Biotic Interactions

Summary

Species range dynamics describe the temporal and spatial shifts in the geographic distribution of organisms, governed by a combination of abiotic drivers—such as climate gradients, habitat structure and disturbance regimes—and biotic interactions including competition, predation, mutualism and hybridisation. At range margins, small population sizes can give rise to Allee effects and demographic constraints, while priority effects following disturbance may lock communities into alternative states. Biotic interactions not only mediate direct responses to environmental change but can also exert indirect effects on dispersal success, colonisation and local adaptation. Hybrid zones, for example, illustrate how interspecific gene flow and competitive exclusion jointly shape moving boundaries. Integrating species distribution modelling with mechanistic demographic and interaction‐based frameworks is critical to forecast range shifts under global change and to devise conservation measures that account for both environmental suitability and community context.

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Species Range Dynamics and Biotic Interactions publication trend

The graph below shows the total number of articles in species range dynamics and biotic interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Allee effect: A demographic phenomenon in which individual fitness or population growth declines at low densities, limiting colonisation success and range expansion.

Range‐pinning: The stabilisation of a species’ range edge due to demographic thresholds or mate‐finding limitations that prevent populations from tracking suitable climatic conditions.

Priority effects: Historical contingencies in which early colonists influence community assembly and subsequent establishment of newcomers, altering range dynamics.

Latitudinal asymmetry: The unequal performance of populations at opposing latitudinal margins, often driven by differential climatic impacts across the range.

References

  1. Introducing the concepts of range‐pinning and Allee effects to explain reduced temperature sensitivity of global treeline dynamics. Global Change Biology (2024).
  2. Widespread latitudinal asymmetry in the performance of marginal populations: A meta‐analysis. Global Ecology and Biogeography (2023).
  3. Competitive interactions modify the direct effects of climate. Ecography (2024).
  4. Differential effects of climate and species interactions on range limits at a hybrid zone: potential direct and indirect impacts of climate change. Ecology and Evolution (2015).
  5. Timing is everything: priority effects alter community invasibility after disturbance. Ecology and Evolution (2014).

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