Core Sampling in an Aquatic Habitat

Focus questions: 1. What is the physical nature of sediments found in aquatic ecosystems such as ponds, estuaries, and the ocean floor? 2. How many living things are found in these sediments? 3. How do the abiotic conditions present in these sediments affect the biotic factors found there? Objectives: The student will: 1. Describe the physical structure of sediment cores taken from aquatic habitats. 2. Compute and compare the ratio of autotrophs to heterotrophs in a benthic sample. 3. Compare observed ratios to those computed by classmates to check reliability in observations and ratios.

Author
Scott Thompson
Organization Affiliation
Skidaway Institute of Oceanography (SkIO)
Grade Level