Marine copepod diversity patterns and the metabolic theory of ecology

Rombouts, Isabelle; Beaugrand, Grégory; Ibañez, Frédéric; Chiba, Sanae; Legendre, Louis

doi:10.1007/s00442-010-1866-z

Cited by 18 publications

(15 citation statements)

References 52 publications

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“…This pattern is one of the oldest recognized in ecology, and although it is widely accepted, there is still no consensus on the processes underlying this trend [4]. However, some groups of organisms have shown variations in this pattern with higher diversity in regions far from equator (see [18, 50]). In our work, we do not see a clear increase in species richness for our more equatorial samples, but this could relate to each region having only limited sites from certain habitats sampled.…”

Section: Discussionmentioning

confidence: 99%

A Global eDNA Comparison of Freshwater Bacterioplankton Assemblages Focusing on Large-River Floodplain Lakes of Brazil

et al. 2016

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With its network of lotic and lentic habitats that shift during changes in seasonal connection, the tropical and subtropical large-river systems represent possibly the most dynamic of all aquatic environments. Pelagic water samples were collected from Brazilian floodplain lakes (total n = 58) in four flood-pulsed systems (Amazon [n = 21], Araguaia [n = 14], Paraná [n = 15], and Pantanal [n = 8]) in 2011–2012 and sequenced via 454 for bacterial environmental DNA using 16S amplicons; additional abiotic field and laboratory measurements were collected for the assayed lakes. We report here a global comparison of the bacterioplankton makeup of freshwater systems, focusing on a comparison of Brazilian lakes with similar freshwater systems across the globe. The results indicate a surprising similarity at higher taxonomic levels of the bacterioplankton in Brazilian freshwater with global sites. However, substantial novel diversity at the family level was also observed for the Brazilian freshwater systems. Brazilian freshwater bacterioplankton richness was relatively average globally. Ordination results indicate that Brazilian bacterioplankton composition is unique from other areas of the globe. Using Brazil-only ordinations, floodplain system differentiation most strongly correlated with dissolved oxygen, pH, and phosphate. Our data on Brazilian freshwater systems in combination with analysis of a collection of freshwater environmental samples from across the globe offers the first regional picture of bacterioplankton diversity in these important freshwater systems.Electronic supplementary materialThe online version of this article (doi:10.1007/s00248-016-0834-5) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

A Global eDNA Comparison of Freshwater Bacterioplankton Assemblages Focusing on Large-River Floodplain Lakes of Brazil

et al. 2016

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“…The fundamental equation of WBE-MTE is deliberately simple, yet has been remarkably successful in explaining some ecological patterns (9,42,46,166,273,274,285). Its failure in other cases (8,84,161,282,331,344,403) may stem, at least in part, from violation of assumptions of the basic model (58), or an imprecise description of the effects of temperature and mass on MR (436). Recent work by the proponents of WBE-MTE acknowledges the existence of such variation (e.g., 86,87), and an interesting avenue for future work is determination of the extent to which incorporation of this variation into the fundamental equation of WBE-MTE improves its predictive power.…”

Section: On the Metabolic Basis Of Ecologymentioning

confidence: 99%

Metabolic Scaling in Animals: Methods, Empirical Results, and Theoretical Explanations

White

Kearney

2014

Comprehensive Physiology

167

174

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Life on earth spans a size range of around 21 orders of magnitude across species and can span a range of more than 6 orders of magnitude within species of animal. The effect of size on physiology is, therefore, enormous and is typically expressed by how physiological phenomena scale with mass(b). When b ≠ 1 a trait does not vary in direct proportion to mass and is said to scale allometrically. The study of allometric scaling goes back to at least the time of Galileo Galilei, and published scaling relationships are now available for hundreds of traits. Here, the methods of scaling analysis are reviewed, using examples for a range of traits with an emphasis on those related to metabolism in animals. Where necessary, new relationships have been generated from published data using modern phylogenetically informed techniques. During recent decades one of the most controversial scaling relationships has been that between metabolic rate and body mass and a number of explanations have been proposed for the scaling of this trait. Examples of these mechanistic explanations for metabolic scaling are reviewed, and suggestions made for comparing between them. Finally, the conceptual links between metabolic scaling and ecological patterns are examined, emphasizing the distinction between (1) the hypothesis that size- and temperature-dependent variation among species and individuals in metabolic rate influences ecological processes at levels of organization from individuals to the biosphere and (2) mechanistic explanations for metabolic rate that may explain the size- and temperature-dependence of this trait.

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“…Brown et al, 2004;Wang et al, 2009;Rombouts et al, 2011;Bailly et al, 2014) and against (e.g. Brown et al, 2004;Wang et al, 2009;Rombouts et al, 2011;Bailly et al, 2014) and against (e.g.…”

Section: (7) Species Diversificationmentioning

confidence: 99%

Is metabolic rate a universal ‘pacemaker’ for biological processes?

2014

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A common, long-held belief is that metabolic rate drives the rates of various biological, ecological and evolutionary processes. Although this metabolic pacemaker view (as assumed by the recent, influential 'metabolic theory of ecology') may be true in at least some situations (e.g. those involving moderate temperature effects or physiological processes closely linked to metabolism, such as heartbeat and breathing rate), it suffers from several major limitations, including: (i) it is supported chiefly by indirect, correlational evidence (e.g. similarities between the body-size and temperature scaling of metabolic rate and that of other biological processes, which are not always observed) - direct, mechanistic or experimental support is scarce and much needed; (ii) it is contradicted by abundant evidence showing that various intrinsic and extrinsic factors (e.g. hormonal action and temperature changes) can dissociate the rates of metabolism, growth, development and other biological processes; (iii) there are many examples where metabolic rate appears to respond to, rather than drive the rates of various other biological processes (e.g. ontogenetic growth, food intake and locomotor activity); (iv) there are additional examples where metabolic rate appears to be unrelated to the rate of a biological process (e.g. ageing, circadian rhythms, and molecular evolution); and (v) the theoretical foundation for the metabolic pacemaker view focuses only on the energetic control of biological processes, while ignoring the importance of informational control, as mediated by various genetic, cellular, and neuroendocrine regulatory systems. I argue that a comprehensive understanding of the pace of life must include how biological activities depend on both energy and information and their environmentally sensitive interaction. This conclusion is supported by extensive evidence showing that hormones and other regulatory factors and signalling systems coordinate the processes of growth, metabolism and food intake in adaptive ways that are responsive to an organism's internal and external conditions. Metabolic rate does not merely dictate growth rate, but is coadjusted with it. Energy and information use are intimately intertwined in living systems: biological signalling pathways both control and respond to the energetic state of an organism. This review also reveals that we have much to learn about the temporal structure of the pace of life. Are its component processes highly integrated and synchronized, or are they loosely connected and often discordant? And what causes the level of coordination that we see? These questions are of great theoretical and practical importance.

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Marine copepod diversity patterns and the metabolic theory of ecology

Cited by 18 publications

References 52 publications

A Global eDNA Comparison of Freshwater Bacterioplankton Assemblages Focusing on Large-River Floodplain Lakes of Brazil

A Global eDNA Comparison of Freshwater Bacterioplankton Assemblages Focusing on Large-River Floodplain Lakes of Brazil

Metabolic Scaling in Animals: Methods, Empirical Results, and Theoretical Explanations

Is metabolic rate a universal ‘pacemaker’ for biological processes?

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