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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
Ecological Disturbance02:26

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An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...
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Related Experiment Video

Updated: Jun 10, 2026

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area
10:14

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area

Published on: October 25, 2024

Ancient deforestation revisited.

J Donald Hughes1

  • 1Department of History, University of Denver, Denver, CO , 80208, USA. dhughes@du.edu

Journal of the History of Biology
|July 30, 2010
PubMed
Summary
This summary is machine-generated.

Ancient Mediterranean forests were significantly impacted by human activity, leading to deforestation and erosion. Recent scientific evidence confirms substantial environmental changes in Greco-Roman times.

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Last Updated: Jun 10, 2026

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area
10:14

Reconstructing Terrestrial Paleoclimate and Paleoecology with Fossil Leaves Using Digital Leaf Physiognomy and Leaf Mass Per Area

Published on: October 25, 2024

Area of Science:

  • Environmental History
  • Classical Studies
  • Paleoecology

Background:

  • The classical Mediterranean environment significantly influenced European and American art and literature.
  • Scholarly consensus historically indicated extensive deforestation and erosion due to human activities in Greco-Roman times.
  • Revisionist historians have recently challenged these findings, suggesting minimal ancient environmental damage.

Observation:

  • This paper re-examines the environmental condition of the ancient Mediterranean.
  • It investigates the extent of forest cover, deforestation, and erosion in antiquity.
  • Recent scientific proxy evidence is analyzed to assess forest health and composition over time.

Findings:

  • Three scientific methodologies—anthracology, palynology, and computer modeling—were employed.
  • These methods provide evidence supporting significant forest changes, including deforestation and erosion episodes.
  • The findings corroborate earlier research indicating substantial environmental impact in the ancient Mediterranean.

Implications:

  • The study reaffirms the significant role of human activity in shaping the ancient Mediterranean environment.
  • It highlights the value of scientific proxy data in reconstructing past ecological conditions.
  • Understanding ancient environmental changes offers insights into long-term human-environment interactions and their consequences.