What controls microzooplankton biomass and herbivory rate across marginal seas of China?

Microzooplankton are the primary herbivores and nutrient regenerators in the marine food web, but their importance is often underestimated, and the quantitative relationships between environmental factors and the biomass and herbivory rate of microzooplankton remain obscure. To fill this gap, we conducted 224 dilution experiments to measure microzooplankton biomass and herbivory rate across a vast area of the marginal seas of China. To gain the potential mechanisms controlling microzooplankton herbivory, we also use a model that combines the Metabolic Theory of Ecology and the functional responses of grazing to quantify the effects of temperature, phytoplankton biomass, and microzooplankton biomass on microzooplankton grazing rate. We estimate an activation energy of 0.51 eV of microzooplankton and found that the Holling III function best described the functional response of microzooplankton grazing with a maximal ingestion rate of 4.76 d−1 at 15°C and a half‐saturation constant of 0.27 μM N. We also find that microzooplankton biomass scales with phytoplankton biomass with an exponent of 0.77, consistent with the general 3/4 scaling law found in other ecosystems. This scaling relationship is accompanied by a shift from ciliates to heterotrophic dinoflagellates with increasing phytoplankton biomass. Our results provide empirical patterns that will be vital to parameterize and validate marine ecosystem models, particularly in China seas.

• Publication year

  2020

• Venue

  Limnology and Oceanography

• Publication date

  2020-09-15

• Fields of study

  Environmental Science

• Identifiers
  DOI 10.1002/lno.11588
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Conflict of interest: the authors declare no conflict of interest.

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• Functional Responses

  2020influential reference
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  2018influential reference
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  2018cited by this paper
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  2018cited by this paper
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  2018influential reference
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  2017cited by this paper
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  2015influential reference
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  2015cited by this paper
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  2015cited by this paper
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  2012influential reference
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  2008influential reference
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  2008cited by this paper
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  2004influential reference
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  2004cited by this paper
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  2004influential reference
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  2004cited by this paper
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  2003influential reference
• Zooplankton grazing and growth: Scaling within the 2–2,000‐µm body size range

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  2000cited by this paper
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  2000influential reference
• Are there general laws in ecology

  1999cited by this paper
• Zooplankton grazing and growth: Scaling within the 2‐2,‐μm body size range

  1997influential reference
• Growth and consumption rates of bacterivorous Antarctic naked marine amoebae

  1997cited by this paper
• Biomass Distribution in Freshwater Plankton Communities

  1995cited by this paper
• Fluorometric analysis of chlorophyll a in the presence of chlorophyll b and pheopigments

  1994cited by this paper
• An experimentally determined carbon : volume ratio for marine “oligotrichous” ciliates from estuarine and coastal waters

  1989influential reference
• Microzooplankton grazing on phytoplankton in Rhode River, Maryland: noninear feeding kinetics

  1989cited by this paper
• Generalized Additive Models

  1986cited by this paper
• Relationships between lorica volume, carbon, nitrogen, and ATP content of tintinnids in Narragansett Bay

  1984influential reference
• Estimating the grazing impact of marine micro-zooplankton

  1982cited by this paper
• Pelagic ecosystem structure: Heterotrophic compartments of the plankton and their relationship to plankton size fractions 1

  1978cited by this paper
• Feeding

  1887influential reference

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