Positive and negative feedbacks and free-scale pattern distribution in rural-population dynamics

Area of Science:

• Socio-ecological systems analysis
• Rural demography
• Environmental science

Background:

• Rural depopulation is a global issue impacting agro-ecological resource productivity.
• Industrialized nations commonly experience rural population decline.
• Understanding these dynamics is crucial for sustainable land management.

Purpose of the Study:

• To analyze 20th and early 21st-century rural population dynamics in the Central Pyrenees.
• To identify key drivers influencing population changes using ecological models.
• To examine shifts in population size distribution patterns.

Main Methods:

• Application of density-independent and density-dependent population models.
• Analysis of long-term population trends and agricultural activity correlations.
• Investigation of changes in power law distribution of population sizes.

Main Results:

• Observed density-dependent positive feedback in populations from 1960-2010.
• Identified a positive correlation between agricultural activity and population size.
• Documented disruption of free-scale population distribution due to societal collapse and urban migration.

Conclusions:

• Complex socio-ecological systems with strong feedback can cause population collapses.
• Changes in population distribution patterns signal significant societal and ecological shifts.
• The study highlights the vulnerability of traditional agricultural societies to external pressures.