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- W2122903885 abstract "Ecologists have greatly advanced our understanding of the processes that regulate trophic structure and dynamics in ecosystems. However, the causes of systematic variation among ecosystems remain controversial and poorly elucidated. Contrasts between aquatic and terrestrial ecosystems in particular have inspired much speculation, but only recent empirical quantification. Here, we review evidence for systematic differences in energy flow and biomass partitioning between producers and herbivores, detritus and decomposers, and higher trophic levels. The magnitudes of different trophic pathways vary considerably, with less herbivory, more decomposers and more detrital accumulation on land. Aquatic–terrestrial differences are consistent across the global range of primary productivity, indicating that structural contrasts between the two systems are preserved despite large variation in energy input. We argue that variable selective forces drive differences in plant allocation patterns in aquatic and terrestrial environments that propagate upward to shape food webs. The small size and lack of structural tissues in phytoplankton mean that aquatic primary producers achieve faster growth rates and are more nutritious to heterotrophs than their terrestrial counterparts. Plankton food webs are also strongly size-structured, while size and trophic position are less strongly correlated in most terrestrial (and many benthic) habitats. The available data indicate that contrasts between aquatic and terrestrial food webs are driven primarily by the growth rate, size and nutritional quality of autotrophs. Differences in food-web architecture (food chain length, the prevalence of omnivory, specialization or anti-predator defences) may arise as a consequence of systematic variation in the character of the producer community." @default.
- W2122903885 created "2016-06-24" @default.
- W2122903885 creator A5028277648 @default.
- W2122903885 creator A5071094388 @default.
- W2122903885 creator A5089868932 @default.
- W2122903885 date "2005-11-29" @default.
- W2122903885 modified "2023-10-11" @default.
- W2122903885 title "All wet or dried up? Real differences between aquatic and terrestrial food webs" @default.
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- W2122903885 doi "https://doi.org/10.1098/rspb.2005.3377" @default.
- W2122903885 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1560001" @default.
- W2122903885 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16519227" @default.
- W2122903885 hasPublicationYear "2005" @default.
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