Cited by 109Evolution and Paleontology StudiesPaleontology and Stratigraphy of FossilsEcology and Vegetation Dynamics Studies

Extinction cascades and catastrophe in ancient food webs

Roopnarine, Peter D.·2006·Paleobiology

Abstract

A model is developed to explore the potential responses of paleocommunities to disruptions of primary production during times of mass extinction and ecological crisis. Disruptions of primary production are expected to generate bottom-up cascades of secondary extinction, and these are predictable given species richnesses, functional diversity, and trophic link distributions. If, however, consumers are permitted to compensate for the loss of trophic resources by increasing the intensities of their remaining biotic interactions, top-down driven catastrophic increases of secondary extinction emerge from the model. Both bottom-up and top-down effects are themselves controlled by the geometry of the food webs. The general Phanerozoic trends of increasing taxonomic and ecological diversities, as well as the varying strengths of biotic interactions, have led to food webs of increasing complexity. The frequency of catastrophic secondary extinction increases as food web complexity increases, but increased complexity also serves to dampen the magnitude of the secondary extinctions. When intraguild competitive interactions are included in the model, competitively inferior taxa are observed to possess greater probabilities of survival if the guilds are embedded in simple subnetworks of the overall food web. The result is the emergence of post-extinction guilds dominated by those inferior taxa. These results are congruent with empirical observations of “disaster taxa” dominance after some mass extinction events, and provide a mechanism for the reorganization of ecosystems that is observed after those events. The model makes the testable prediction that dominance by disaster taxa, however, should be observed only when bottom-up disruptions have caused ecosystems to collapse catastrophically.

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Crossref · 10.1666/05008.1

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69 of 69 references verified0 citation errors · 0 not checkable

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  • Reconstructed fossil ecosystems (paleo food webs) share universal patterns with modern ecological networks.

    “We can also reconstruct fossil ecosystems, the so-called ‘paleo food webs’ [298,299] (figure 8a,b), and again find universal patterns shared with modern ecological networks [303].”

    From Fundamental constraints to the logic of living systems (2024) · cites this paper as [298]

Cites

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2 of the 71 references couldn’t be matched to a known paper.

Research works printed but not linked: 6

  1. Roopnarine, 1996, Systematics, biogeography and extinction of chionine bivalves (Early Oligocene–Recent) in the Late Neogene of tropical America, Malacologia, 38, 103
  2. Elton, 1927, Animal ecology
  3. Brown, 1995, Macroecology
  4. Vermeij, 1986, Differential extinction in tropical American molluscs: endemism, architecture, and the Panama land bridge, Malacologia, 17, 29
  5. 10.1669/0883-1351(2004)019 · DOI
  6. 10.2113/0260035 · DOI

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Authors
Roopnarine, P. D.
Corresponding author
Roopnarine, Peter D.
Venue
Paleobiology
Published
2006
Volume
32
Issue
1
Pages
1-19
ISSN
  • 0094-8373 (ISSN-L)
  • 1938-5331
OpenAlex
W4246676679
Cited by
109
References
71
Citations by year
2026: 4 · 2025: 6 · 2024: 6 · 2023: 7 · 2022: 9 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 7 · 2014: 5 · 2013: 9 · 2012: 5
FWCI
4.91
Type
journal article
Language
en
Open access
closed
Locations
  • Paleobiology (publishedVersion)
  • BioOne Complete (BioOne) (submittedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
Keywords
mass extinction, secondary extinction, food web complexity, bottom-up control, top-down control, functional diversity, trophic interactions, intraguild competition, ecological collapse

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