Marine Biology: An Ecological Approach |
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Page 30
... levels than large land animals . From the standpoint of human beings , harvestable food in the form of animal protein is available primarily from large herbivores on land ( second trophic level ) , such as cattle and sheep , whereas ...
... levels than large land animals . From the standpoint of human beings , harvestable food in the form of animal protein is available primarily from large herbivores on land ( second trophic level ) , such as cattle and sheep , whereas ...
Page 215
... levels . As can be seen from the graph , there are certain points on this curve that reflect sharp increases in exposure to air . This can also be deduced from Fig . 6-10A , which represents a single typical lunar tide cycle . Consider ...
... levels . As can be seen from the graph , there are certain points on this curve that reflect sharp increases in exposure to air . This can also be deduced from Fig . 6-10A , which represents a single typical lunar tide cycle . Consider ...
Page 404
... levels . This has already had an effect on certain of our fisheries such as swordfish and tuna , in which the levels of the element mercury have often been higher than safe levels established by the FDA for humans , causing fishes to be ...
... levels . This has already had an effect on certain of our fisheries such as swordfish and tuna , in which the levels of the element mercury have often been higher than safe levels established by the FDA for humans , causing fishes to be ...
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Common terms and phrases
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