Marine Biology: An Ecological Approach |
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Page 36
... DIATOMS The diatoms are easily differentiated from the dinoflagellates because they are enclosed within a unique glass " pill box , " and have no visible means of locomotion . Each box is composed of two parts or valves , one valve ...
... DIATOMS The diatoms are easily differentiated from the dinoflagellates because they are enclosed within a unique glass " pill box , " and have no visible means of locomotion . Each box is composed of two parts or valves , one valve ...
Page 38
... diatoms . ( A ) Chaetoceros sp . ( 700 × ) . ( B ) Thalassiosira decipiens ( 1,000 × ) . ( C ) Pseudoeunotia doliolus ( 1,400 × ) . Some diatoms are not planktonic but benthic , but we shall return to these in Chapter Six ...
... diatoms . ( A ) Chaetoceros sp . ( 700 × ) . ( B ) Thalassiosira decipiens ( 1,000 × ) . ( C ) Pseudoeunotia doliolus ( 1,400 × ) . Some diatoms are not planktonic but benthic , but we shall return to these in Chapter Six ...
Page 71
... diatom population to 27,000 cells per liter in five days . If the copepod numbers and hence grazing rate were increased five times , the diatoms were eliminated in five days . Since the rate of diatom reproduction remained unchanged in ...
... diatom population to 27,000 cells per liter in five days . If the copepod numbers and hence grazing rate were increased five times , the diatoms were eliminated in five days . Since the rate of diatom reproduction remained unchanged in ...
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abundant adaptations algae algal amount amphipods anemones areas Atlantic bacteria barnacles benthic biology body bottom burrow carnivores changes Cnidaria communities competition copepods coral reef crabs crustaceans deep sea density deposit feeders depth desiccation detritus diatoms dinoflagellates dominant ecology ecosystems eggs epipelagic estuary fauna feeding Figure fishes fresh water grazing hence herbivores increased invertebrates kelp kelp beds large numbers larvae layers levels light living low tide major marine mammals marsh mesopelagic migrate mollusks Mytilus nekton number of species numbers nutrients occur ocean oxygen Pacific coast particles patterns pelagic percent Photo courtesy photophores photosynthesis physical factors phytoplankton plankton plants Plate polychaete population predators primary productivity reduced result rocky shores salinity salt sand beaches sea grass sea urchins sea water sediment shallow water squids substrate surface waters suspension feeders temperate temperature terrestrial thermocline tropical tuna upper various vertical water column water mass wave action whales zonation zone zooplankton zooxanthellae