Characteristics of an estuaryPresentation Transcript
CHARACTERISTICS OF AN ESTUARY BY: JANET C. BESAGAS
Three main characteristics of San Miguel Bay1. High sediment output resulting in soft, muddy substrates.Beach on San Miguel Island
2. High nutrient inputs resulting in high primary, secondary, and tertiary productivity. The watershed of San Miguel Bay measures 3,320 sq. km.Bicol river watershed
3. Highly variable salinity gradients resulting in floral and faunal assemblages which are tolerant of wide fluctuations in salinity.
OTHER CHARACTERISTICS OF AN ESTUARY
In Alabama, 85 species of fishare considered to be marine or estuarine
• Estuaries and coastal waters provide essential habitat for over 75% of the commercial fish catch and 80-90% of the recreational catch of fish.• Estuaries are among the most productive natural systems on Earth due to the mixing of nutrients from land and sea.
Estuaries are becomingmore and more polluted.Now there is a project goingon trying to save ourestuaries to keep themcleaner and healthier.