Marine Biology: An Ecological Approach |
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Page 25
... species constituting each differ among geographical areas and , in some areas , each level may have more or fewer species than another . This implies that ecologically equivalent species replace each other geographical- ly and that the ...
... species constituting each differ among geographical areas and , in some areas , each level may have more or fewer species than another . This implies that ecologically equivalent species replace each other geographical- ly and that the ...
Page 26
... species in a community has certain tolerances with respect to each and every environmental factor . If the limit of tolerance is exceeded in some area by a given factor , say temperature , the species will be absent . Similarly , each ...
... species in a community has certain tolerances with respect to each and every environmental factor . If the limit of tolerance is exceeded in some area by a given factor , say temperature , the species will be absent . Similarly , each ...
Page 284
... species are capable of penetrating varying distances up the estuary . Most tolerate salinities down to 15 % , with a few hardy species tolerating levels down to 3 %% ( Fig . 8-6 ) . The brackish water or true estuarine component ...
... species are capable of penetrating varying distances up the estuary . Most tolerate salinities down to 15 % , with a few hardy species tolerating levels down to 3 %% ( Fig . 8-6 ) . The brackish water or true estuarine component ...
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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