Species Distribution and Abundance Dynamics

Species distribution and abundance dynamics encompass the spatial and temporal patterns by which species occupy and numerically dominate ecosystems. These dynamics emerge from the interaction of environmental gradients, species’ physiological tolerances, dispersal capabilities and biotic interactions such as competition, predation and mutualism. The fundamental niche sets the potential environmental envelope for a species, while the realised niche reflects constraints imposed by competitors and predators. Niche breadth and niche position help to explain why some species persist across broad environmental gradients whereas others remain narrowly restricted. Dispersal capacity determines the ability of populations to track shifting habitats under climate change or land‐use alteration. Local abundance patterns result from demographic processes, resource availability and interspecific interactions, and they in turn influence regional occupancy and community composition. Advances in spatial modelling, trait‐based approaches and long‐term monitoring have revealed complex feedbacks between local abundance and larger‐scale range dynamics. Understanding these processes is essential for predicting species’ responses to global change, informing conservation strategies and managing ecosystem services on a planetary scale.

Research from Nature Portfolio

Recent studies have combined morphological proxies and phylogenetic frameworks to link dispersal traits directly to distributional outcomes in flying mammals. Analyses of wing loading and aspect ratio in vespertilionid bats demonstrate that species with higher dispersal capacity achieve larger geographic ranges, emphasising the central role of movement ability in shaping broad‐scale biogeography. Complementary work in plant‐associated microbes has refined the geometric niche concept by decomposing abiotic (temperature responses) and biotic (host‐range) axes. This research reveals that these niche dimensions evolve independently, that host interactions constrain the fundamental niche to produce the realised niche, and that conventional labels of ‘generalist’ or ‘specialist’ are inadequate without a multi‐dimensional perspective. Together, these contributions underscore the need to integrate trait variation and niche geometry to predict distributional responses to environmental change.

Species Distribution and Abundance Dynamics publication trend

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

Technical terms

Ecological niche: The multidimensional set of environmental and biotic conditions under which a species can maintain populations.

Fundamental niche: The full range of abiotic conditions permitting species survival and reproduction in the absence of biotic constraints.

Realised niche: The subset of conditions actually occupied by a species when biotic interactions are taken into account.

Niche breadth: The range of environmental variables or resources a species can tolerate or exploit.

Dispersal capacity: The inherent ability of individuals to move across the landscape and colonise new habitats, often linked to morphological traits.

Geographic range size: The total spatial extent over which a species is known to occur.

Occupancy: The proportion of available sites within a species’ range where it is present.

Local abundance: The number of individuals or density of a species at a specific location or site.

References

1. Applying the concept of niche breadth to understand urban tree mortality in the UK. The Science of The Total Environment (2023).
2. Climate or diet? The importance of biotic interactions in determining species range size. Global Ecology and Biogeography (2023).
3. How and why species are rare: towards an understanding of the ecological causes of rarity. Ecography (2024).
4. Wing morphology predicts geographic range size in vespertilionid bats. Scientific Reports (2019).
5. Geometry and evolution of the ecological niche in plant-associated microbes. Nature Communications (2020).