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10 cards from this deck
Small water bodies up to 2 hectares
Water enrichment with excess nutrients (N & P)
Nutrients→algae→death→O₂ loss→animals die
Producers, herbivores, carnivores
Break down dead matter, release N, P, Mg
Ecological succession in freshwater environment
Over 200 years, 5 distinct stages
80% poor/very poor; lost 500,000 in 100 years
Create network of 1+ million countryside ponds
Shore, surface film, open water, pond bottom
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