Cellulose digestion by freshwater microcrustacea1

Schoenberg, Steven A.; Maccubbin, Alexander E.; Hodson, Robert E.

doi:10.4319/lo.1984.29.5.1132

Cited by 32 publications

(12 citation statements)

References 17 publications

(19 reference statements)

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“…a possible additional route of carbon flow in detritusbased ecosystems, as assimilation of pure cellulose or unconditioned detritus by animals has been demonstrated (Barlocher and Kendrick 1975, Foulds and Mann 1978, Schoenberg et al 1984, Sinsabaugh et al 1985. In nominal model simulations, it is assumed that detritivore and meiofauna biomass can assimilate polysaccharides directly at gross efficiencies of 14% (Cammen 1980, Sinsabaugh et al 1985) and 7% (Schoenberg et al 1984), respectively. There is currently no unequivocal evidence that ingested lignin can be directly assimilated by animals in aquatic environments.…”

Section: Introductionmentioning

confidence: 99%

Carbon Flow From Lignocellulose: A Simulation Analysis of a Detritus‐Based Ecosystem

Moran¹,

Legović²,

Benner³

et al. 1988

Ecology

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A simulation model is used to predict the fate of carbon derived from lignocellulose in the food web of a marsh community in the Okefenokee Swamp, Georgia. The model, constructed from empirical work spanning a 6—yr period, predicts the role of lignocellulose—derived detritus in supporting secondary production in this ecosystem. Although Carex walteriana lignocellulose is the dominant product of primary production in this marsh and the dominant source of detritus, the model predicts that it may not be quantitatively important in the support of tropic groups other than bacteria and protozoa. The efficiency of transfer lignocellulosic carbon through the microbial loop is low, and overall only 8% of the carbon used by bacteria and fungi is predicted to be ingested subsequently by metazoans. An average of 32% of the bacterial biomass in the marsh water and sediments is predicted by the model to be produced at the expense of lignocellulosic carbon, whereas <10% of the biomass of larger detritivorous animals can be traced to carbon from lignocellulose. Thus in this marsh ecosystem, detritus food webs based on other, less abundant, sources of detrital carbon, or perhaps classical plant—herbivore food webs, are more likely to be the major source of carbon for metazoan production.

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Section: Introductionmentioning

confidence: 99%

Carbon Flow From Lignocellulose: A Simulation Analysis of a Detritus‐Based Ecosystem

Moran¹,

Legović²,

Benner³

et al. 1988

Ecology

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“…It can provide additional nutrients by fermenting carbohydrates and by synthesizing amino acids and essential vitamins. Daphnids are able to derive structural body components and lipids from the cellulose of algal cell walls [817], though it is widely accepted that daphnids, like almost all other animals, are unable to produce cellulase. Endogenous cellulase production is only known to occur in some snails, wood-boring beetles, shipworms and thysanurans [569].…”

Section: Digestionmentioning

confidence: 99%

“…The leaf-cutting ant Atta specifically cultures fungi, probably to obtain cellulase [594]. Bacteria have been found in the guts of an increasing number of crustaceans [653], but not yet in daphnids [817]. In view of the short gut residence times for daphnids, it is improbable that the growth of the daphnid's gut flora plays an important role.…”

Section: Digestionmentioning

confidence: 99%

Dynamic Energy and Mass Budgets in Biological Systems

Kooijman

2000

794

1,202

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second editionDynamic Energy Budget theory unifies the commonalities between organisms as prescribed by the implications of energetics, which link different levels of biological organization (cells, organisms and populations). The theory presents simple mechanistic rules that describe the uptake and use of energy and nutrients and the consequences for physiological organization throughout an organism's life cycle, including the relationships between energetics and aging and the effects of toxicants. In this new edition, the theory is broadened to encompass the fluxes of both energy and mass. All living organisms are now covered in a single quantitative framework, the predictions of which are tested against a wide variety of experimental results at the various levels of biological organization. The theory explains many general observations, such as the body size scaling relationships of certain physiological traits, and provides a theoretical basis for the widely used method of indirect calorimetry. In each case, the theory is developed in elementary mathematical terms, but a more detailed discussion of the methodological aspects of mathematical modelling is also included, making the book suitable for biologists and mathematicians with a broad interest in both fundamental and applied quantitative problems in biology.Bas Kooijman is Professor of Applied Theoretical Biology at the Vrije Universiteit in Amsterdam and is also head of the University's Department of Theoretical Biology. His research focuses on mathematical biology, in particular ecotoxicology which provided the framework for the original version of his Dynamic Energy Budget theory published in 1993 (Dynamic Energy Budgets in Biological Systems -Theory and Applications in Ecotoxicology). From the first edition:"This book is an excellent scientific product that informs and forces contemplation of issues relating to population and community ecology. The author has made a complex subject coherent." Thomas G. Hallam, Bulletin of Mathematical Biology "... a very useful and general tool to select more ecologically sound process equations and parameters in ecological models." Sven Erik Jørgensen, Ecological Modelling "The author has made a significant contribution to the problem of modelling the dynamics of biological populations at the level of the individual by synthesizing this very complicated subject into a relatively short list of general assumptions and putting the energetics of sub-models for vital rates on a solid basis." Jim Cushing, Mathematical Biosciences "The family of idealized models offered in this book is capable of playing a role analogous to that of Lotka-Volterra models in population dynamics ... I am confident that any model(s) capable of occupying this niche will be strongly influenced by the ideas in this book." Roger Nisbet, Ecology 9 LIVING TOGETHER Interaction between organisms: The spectrum from competition to preypredator systems. Evaluation of the consequences of the DEB model for population dynamics, food chains, and communities....

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“…This suggests that discrete primary organic carbon sources having different δ 13 C values exist in the lake. POM and SOM have usually been considered as the main food sources for zooplankton (Minshall 1967;Schoenberg et al 1984). However, the δ values of primary consumers in Lake Shirakoma-ike (D. longispina and A. pacificus) could not be explained by those of bulk POM and SOM.…”

Section: Implication Of the Difference In δ Values Between D Longispmentioning

confidence: 95%

Faunal trophic interaction in an oligotrophic-dystrophic lake (Shirakoma-ike, Japan)

2002

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The trophic interaction in the pelagic food web of oligotrophic-dystrophic Lake Shirakoma-ike was investigated by a stable isotope technique. Carbon and nitrogen isotope analyses revealed the trophic interaction among Piona carnea (a water mite), Chaoborus sp. (a phantom midge), Daphnia longispina (a cladoceran), and Acanthodiaptomus pacificus (a calanoida copepoda). The δ 13 C values for estimating the relative contributions of D. longispina and A. pacificus to carnivores were used, and they were also used for the constraint of the trophic enrichment factor of δ 15 N. Both Chaoborus sp. and P. carnea were suggested to consume D. longispina and A. pacificus at almost the same ratio (1 : 1). However, both carnivores preferred A. pacificus to D. longispina, because D. longispina was much more abundant in the lake than A. pacificus. Omnivory of P. carnea was also analyzed by the mixing model.

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Cellulose digestion by freshwater microcrustacea1

Cited by 32 publications

References 17 publications

Carbon Flow From Lignocellulose: A Simulation Analysis of a Detritus‐Based Ecosystem

Carbon Flow From Lignocellulose: A Simulation Analysis of a Detritus‐Based Ecosystem

Dynamic Energy and Mass Budgets in Biological Systems

Faunal trophic interaction in an oligotrophic-dystrophic lake (Shirakoma-ike, Japan)

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