ERTH 2403 Lecture Notes - Lecture 10: Siliceous Ooze, Water Vascular System, Jellyfish

• School: Carleton University
• Department: Earth Sciences
• Course: ERTH 2403
• Professor: Hafida El Bilali

Document Summary

Size range from 2um (flagellates) up to several meters (jelly fish) Primary consumers/carnivores: feed primarily on other zooplankton (animals) Detrivores: feed primarily on dead organic matter (detritus) Foraminifera: calcareous shell composed of a series of chambers; calcareous ooze sediments; 30 um to 1-2mm; most abundant 40 degree n 40 degree s. Radiolaria: spherical cells with silica capsule 50 um to several mm; siliceous ooze sediments; cold water and deep-sea. A. arthrropods (crustaceans: copepods: 70% of all zooplankton. Most abundanct and widley distributed animal in the world. Jellies: various animal groups, transparent structures, jellyfish (cnidaria, pteropods (snails, salps (primitive chordates) Invertebrates: 90% of all living and fossil animals, soft bodies, no internal skeleton to support muscles, most have an exoskeleton of: Know the table in the textbook that lists marine examples (i) Porifera: sponges, calcium carbonate or silica spicules, primitive (ii) Clear water (sunlight for zooxanthella) turbidity blocks sunlight. Low nutrients: nutrient rich = algal blooms which block light.