Aquatic pollution increases use of terrestrial prey subsidies by stream fish
نویسندگان
چکیده
منابع مشابه
Aquatic predation alters a terrestrial prey subsidy.
Organisms with complex life histories (CLH) often cross habitat or ecosystem boundaries as they develop from larvae to adults, coupling energy flow between ecosystems as both prey (bottom-up) and consumers (top-down). Predation effects on one stage of this life cycle can therefore cascade across ecosystems, magnifying the impact of local predation. The majority of predation studies have assesse...
متن کاملContrasting effects of aquatic subsidies on a terrestrial trophic cascade.
Subsidies from adjacent ecosystems can alter recipient food webs and ecosystem functions, such as herbivory. Emerging aquatic insects from streams can be an important prey in the riparian zone. Such aquatic subsidies can enhance predator abundances or cause predators to switch prey, depending on the herbivores. This can lead to an increase or decrease of in situ herbivores and herbivory. We exa...
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Many teleosts that live at the water's edge will voluntarily strand themselves to evade predators or escape poor conditions-this behavior has been repeatedly observed in the field for killifishes (Cyprinodontiformes). Although most killifishes are considered fully aquatic and possess no obvious morphological specializations to facilitate terrestrial locomotion, individuals from several differen...
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Mutual trophic interactions between contiguous habitats have remained poorly understood despite their potential significance for community maintenance in ecological landscapes. In a deciduous forest and stream ecotone, aquatic insect emergence peaked around spring, when terrestrial invertebrate biomass was low. In contrast, terrestrial invertebrate input to the stream occurred primarily during ...
متن کاملSelective predation by benthivorous fish on stream macroinvertebrates – The role of prey traits and prey abundance
25 The prey selectivity of fish depends largely on traits of prey and predator. Preferable prey 26 traits might be different for visual predators (such as drift-feeding salmonids) and rather non27 visual predators (such as benthic feeders). We evaluated the explanatory power of five prey 28 traits and prey long-term abundance for the prey selection of small benthivorous fish by 29 analysing the...
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ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2015
ISSN: 0021-8901,1365-2664
DOI: 10.1111/1365-2664.12543