A multivariate approach to large‐scale variation in marine planktonic copepod diversity and its environmental correlates

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

doi:10.4319/lo.2010.55.5.2219

Cited by 30 publications

(27 citation statements)

References 58 publications

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“…Their relatively short life spans and high dispersal ability make these ectotherms sensitive indicators of changes in the physical environment (Reid and Beaugrand et al 2002;Hays et al 2005). Because large-scale diversity patterns of copepods are mostly correlated to ocean temperature Rombouts et al 2009Rombouts et al , 2010, these diversity gradients offer a great opportunity to test the MTE. Also, the influence of temperature on diversity can be examined in relative isolation in the marine environment compared to its influence on terrestrial diversity where other factors, like water availability, impose additional limitations (Lomolino et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Marine copepod diversity patterns and the metabolic theory of ecology

et al. 2010

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Temperature is a powerful correlate of large-scale terrestrial and marine diversity patterns but the mechanistic links remain unclear. Whilst many explanations have been proposed, quantitative predictions that allow them to be tested statistically are often lacking. As an important exception, the metabolic theory of ecology (MTE) provides a rather robust technique using the relationship between diversity, temperature and metabolic rate in order to elucidate the ultimate underlying mechanisms driving large-scale diversity patterns. We tested if the MTE could explain geographic variations in marine copepod diversity on both ocean-wide and regional scales (East Japan Sea and North East Atlantic). The values of the regression slopes of diversity (ln taxonomic richness) over temperature (1/kT) across all spatial scales were lower than the range predicted by the metabolic scaling law for species richness (i.e. -0.60 to -0.70).We therefore conclude that the MTE in its present form is not suitable for predicting marine copepod diversity patterns. These results further question the applicability of the MTE for explaining diversity patterns and, despite the relative lack of comparable studies in the marine environment, the generality of the MTE across systems.

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Section: Introductionmentioning

confidence: 99%

Marine copepod diversity patterns and the metabolic theory of ecology

et al. 2010

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“…Both metagenetic and morphological analyses showed high species richness in the warm, western-boundary Kuroshio Current. In the epipelagic zone, copepod diversity is strongly correlated with temperature, and higher diversity is observed in warm oligotrophic oceans (Woodd-Walker et al 2002;Rombouts et al 2010). The highest species richness was observed at sampling sites that were strongly affected by the Kuroshio Current, as reflected in high temperature and salinity ( Fig.…”

Section: Discussionmentioning

confidence: 91%

“…; Rombouts et al . ). The highest species richness was observed at sampling sites that were strongly affected by the Kuroshio Current, as reflected in high temperature and salinity (Fig.…”

Section: Discussionmentioning

confidence: 97%

A metagenetic approach for revealing community structure of marine planktonic copepods

Hirai

Kuriyama

Ichikawa

et al. 2014

Molecular Ecology Resources

106

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Marine planktonic copepods are an ecologically important group with high species richness and abundance. Here, we propose a new metagenetic approach for revealing the community structure of marine planktonic copepods using 454 pyrosequencing of nuclear large subunit ribosomal DNA. We determined an appropriate similarity threshold for clustering pyrosequencing data into molecular operational taxonomic units (MOTUs) using an artificial community containing 33 morphologically identified species. The 99% similarity threshold had high species-level resolution for MOTU clustering but overestimated species richness. The artificial community was appropriately clustered into MOTUs at 97% similarity, with little inflation in MOTU numbers and with relatively high species-level resolution. The number of sequence reads of each MOTU was correlated with dry weight of that taxon, suggesting that sequence reads could be used as a proxy for biomass. Next, we applied the method to field-collected samples, and the results corresponded reasonably well with morphological analysis of these communities. Numbers of MOTUs were well correlated with species richness at 97% similarity, and large numbers of sequence reads were generally observed in MOTUs derived from species with large biomass. Further, MOTUs were successfully classified into taxonomic groups at the family level at 97% similarity; similar patterns of species richness and biomass were revealed within families with metagenetic and morphological analyses. At the 99% similarity threshold, MOTUs with high proportions of sequence reads were identified as biomass-dominant species in each field-collected sample. The metagenetic approach reported here can be an effective tool for rapid and comprehensive assessment of copepod community structure.

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“…According to Rombouts (2010) the mean ocean temperature is the most important correlate of large-scale variations in copepod diversity. The decline in diversity inside NPE, in contrast, is a result of local factors.…”

Section: Discussionmentioning

confidence: 99%

Seasonal and spatial distribution of mesozooplankton in a tropical estuary, Nha Phu, South Central Viet Nam

et al. 2013

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This study provides a description of mesozooplankton (holo-and meroplankton) abundance, biomass and diversity patterns inside and outside a tropical estuary (Nha Phu Estuary, Khanh Hoa, Viet Nam). In total 185 zooplankton species have been recorded during the study period (2009)(2010), copepods contribute with the largest share of species (more than 100), Tunicata with 20, Cnidaria with 17 and Chaetognatha with 9 species. At the most species rich site the number of zooplankton species varies between 55 and 123. The number of species and the annual variation in numbers declines towards the head of the estuary (14-37 species). In contrast, the highest numbers of individuals occur in the inner part of NPE. Calanoids that are the most abundant group of the copepods occur in densities up to 28.2 ind. L −1 (Aug. 9). At 'Outer NPE' and 'Outside NPE' the maximum density of calanoids is 5.8 and 10.7 ind. L −1 , respectively. The declining diversity of zooplankton towards the head of the estuary is also supported by various indices (Shannon's index, Margalef's index). A cluster analysis on similarity of species supports a clustering of the inner NPE sites vs the other sites. There is a general separation between the dominant copepod species in the inner (Bestiola sp., Acartia pacifica, Pseudodiaptomus incisus) and outer (Paracalanus gracilis, Acrocalanus gibber, Subeucalanus subcrassus, Oithona rigida, Corycaeus andrewsi, Oithona plumifera) part of the estuary though a few species are common in both areas (Paracalanus crassirostris and Euterpina acutifrons). The zooplankton community at the inner NPE is subjected to more variable hydrographic conditions (salinity in particular) than the communities at the other sites where more stable conditions prevail. A short residence time in the inner part of the estuary due to the tide is supposed to impede a strong horizontal structuring of the zooplankton community.

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A multivariate approach to large‐scale variation in marine planktonic copepod diversity and its environmental correlates

Cited by 30 publications

References 58 publications

Marine copepod diversity patterns and the metabolic theory of ecology

Marine copepod diversity patterns and the metabolic theory of ecology

A metagenetic approach for revealing community structure of marine planktonic copepods

Seasonal and spatial distribution of mesozooplankton in a tropical estuary, Nha Phu, South Central Viet Nam

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