In a tundra rodent study, 3 out of every 8 lemmings are found in burrow systems with complex tunnel networks. If 160 lemmings are observed, how many are in simple (non-complex) burrows?
["Search Optimized Article: Lemming Burrow Study Reveals Complex Tunnel Networks Support Tundra Ecosystem", "Science & Wildlife: Understanding the Hidden Lives of Tundra Rodents", "In groundbreaking research on Arctic rodent behavior, scientists have uncovered striking patterns in lemming population distribution within tundra burrow systems. The study reveals that 3 out of every 8 lemmings inhabit burrows featuring complex tunnel networks, a finding that deepens our understanding of lemming ecology and their role in fragile tundra habitats. With 160 lemmings observed across key study sites, researchers have calculated how many of these small mammals rely on simple, single-tunnel burrows.", "### What Does the Study Measure?", "Lemmings are essential to Arctic food webs, serving as a primary food source for birds, foxes, and other predators. Yet, their survival hinges on burrow architecture—offering protection from extreme cold, predators, and harsh weather. The study found that 37.5% (or 3/8) of tracked lemmings occupy burrows with intricate tunnel systems, while the remaining 62.5% live in simple burrows without complex networks.", "### How Many Lemmings Are in Simple Burrows?", "Given a population of 160 lemmings, the research indicates:", "- Fraction in complex burrows = 3/8\n- Fraction in simple burrows = 1 – 3/8 = 5/8", "Calculating simple burrow inhabitants:\n[\n\frac{5}{8} \ imes 160 = 100\n]", "Therefore, 100 lemmings are estimated to live in simple (non-complex) burrows.", "This distribution highlights that while a minority of lemmings dwell in elaborate burrow systems designed for longevity and resilience, the majority adapt to simpler shelters—suggesting behavioral flexibility crucial for survival in the challenging Arctic environment.", "### Why This Matters for Tundra Conservation", "Understanding burrow complexity helps scientists assess how lemming populations respond to environmental changes, such as climate shifts impacting vegetation and permafrost stability. These subtle differences in shelter use inform conservation strategies aimed at preserving tundra integrity and the wildlife that depends on it.", "---", "Key Search Terms: lemming burrow study, tundra rodent ecology, lemming complex burrows, Arctic wildlife infrastructure, tundra conservation.\nTags: lemmings, Arctic tundra, rodent behavior, burrow systems, wildlife research, tundra ecosystem", "---", "Summary: In a study of 160 lemmings, 3 out of every 8 live in complex burrow networks—meaning 100 lemmings inhabit simpler, single-tunnel shelters, underscoring their adaptive strategies in one of Earth’s harshest environments."]
