Marine Biology: An Ecological Approach |
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Page 30
... animals in the sea are carnivores . Large marine animals are therefore on higher trophic levels than large land animals . From the standpoint of human beings , harvestable food in the form of animal protein is available primarily from ...
... animals in the sea are carnivores . Large marine animals are therefore on higher trophic levels than large land animals . From the standpoint of human beings , harvestable food in the form of animal protein is available primarily from ...
Page 305
... animals of both areas and the marsh plants and their environment . In general , salt marsh animals find themselves in a stressful environment of widely varying physical conditions . They must either adapt to the range of environmental ...
... animals of both areas and the marsh plants and their environment . In general , salt marsh animals find themselves in a stressful environment of widely varying physical conditions . They must either adapt to the range of environmental ...
Page 362
... animal are reduced and the animals are not responsive to animal food . In the jellyfish Cassiopeia , a striking modification is behavioral . These animals , rather than swimming in open waters as do most jellyfishes , lie upside down on ...
... animal are reduced and the animals are not responsive to animal food . In the jellyfish Cassiopeia , a striking modification is behavioral . These animals , rather than swimming in open waters as do most jellyfishes , lie upside down on ...
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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