2018
DOI: 10.1002/2017gb005785
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Environmental Effects on Mesozooplankton Size Structure and Export Flux at Station ALOHA, North Pacific Subtropical Gyre

Abstract: Using size‐fractionated mesozooplankton biomass data collected over 23 years (1994–2016) of increasing primary production (PP) at station ALOHA (A Long‐Term Oligotrophic Habitat Assessment), we evaluate how changing environmental conditions affect mesozooplankton size structure, trophic cycling, and export fluxes in the subtropical North Pacific. From generalized additive model analysis, size structure is significantly influenced by a nonlinear relationship with sea surface temperature that is mainly driven by… Show more

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Cited by 13 publications
(7 citation statements)
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References 74 publications
(121 reference statements)
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“…The increase in migrant biomass apparently increased the predation of phytoplankton during the night in the upper layers, which likely enhanced the metabolic and clearance rates of migrators during the daytime in mesopelagic zones because the two rates dominated the magnitudes of active fluxes (Table S1). Moreover, the larger migrators, particularly those of sizes 2-5 mm, appeared to be dominant in transporting C, N, and P into mesopelagic zones (Table 2), which is consistent with the results of Valencia et al (2018), who reported 2-5 mm migrators as the major group in determining active fluxes at station ALOHA, North Pacific Subtropical Gyre. Steinberg and Landry (2017) compiled the data of migrant biomass and respiratory carbon fluxes collected from various locations in the North Atlantic and Pacific oceans and demonstrated an increase in respiratory carbon fluxes with an increase in migrant biomass (positive correlation).…”
Section: Regulation Of Active C N and P Fluxes In The Nscssupporting
confidence: 89%
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“…The increase in migrant biomass apparently increased the predation of phytoplankton during the night in the upper layers, which likely enhanced the metabolic and clearance rates of migrators during the daytime in mesopelagic zones because the two rates dominated the magnitudes of active fluxes (Table S1). Moreover, the larger migrators, particularly those of sizes 2-5 mm, appeared to be dominant in transporting C, N, and P into mesopelagic zones (Table 2), which is consistent with the results of Valencia et al (2018), who reported 2-5 mm migrators as the major group in determining active fluxes at station ALOHA, North Pacific Subtropical Gyre. Steinberg and Landry (2017) compiled the data of migrant biomass and respiratory carbon fluxes collected from various locations in the North Atlantic and Pacific oceans and demonstrated an increase in respiratory carbon fluxes with an increase in migrant biomass (positive correlation).…”
Section: Regulation Of Active C N and P Fluxes In The Nscssupporting
confidence: 89%
“…In addition, with an increase in respiratory carbon fluxes, the equivalent fraction of vertical POC fluxes measured by traps from epipelagic zones (100-200 m) also increased. Although the oceanic conditions may influence the community structure, size distribution, and migrant biomass leading to changes in active-flux magnitudes (Valencia et al, 2018), our data indicated that the 2-5 mm class exhibited the highest night/day biomass ratios and migrant biomass in both summer and winter with contrasting oceanic conditions in the NSCS, implying the dominant role of 2-5 mm migrators in determining migratory fluxes in the subtropical-tropical ocean.…”
Section: Regulation Of Active C N and P Fluxes In The Nscsmentioning
confidence: 63%
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“…The increase in migrant biomass apparently increased the predation of phytoplankton during the night in the upper layers, which likely enhanced the metabolic and clearance rates of migrators during the daytime in mesopelagic zones because the two rates dominated the magnitudes of active fluxes (Supplementary Table S1). Moreover, the larger migrators, particularly those of sizes 25 mm, appeared to be dominant in transporting C, N, and P into mesopelagic zones (Table 2), which is consistent with the results of Valencia et al (2018) who reported 25 mm migrators as the major group in determining active fluxes at station ALOHA, North Pacific Subtropical Gyre. Steinberg and Landry (2017) increase in respiratory carbon fluxes with an increase in migrant biomass (positive correlation).…”
Section: Regulation Of Active C N and P Fluxes In The Nscssupporting
confidence: 90%
“…In addition, with an increase in respiratory carbon fluxes, the equivalent fraction of vertical POC fluxes measured by traps from epipelagic zones (100200 m) also increased. Although the oceanic conditions may influence the community structure, size distribution, and migrant biomass leading to changes in active-flux magnitudes (Valencia et al, 2018), our data indicated that the 25 mm class exhibited the highest N:D biomass ratios and migrant biomass in both summer and winter with contrasting oceanic conditions in the NSCS, implying the dominant role of 25 mm migrators in determining migratory fluxes in the subtropical-tropical ocean.…”
Section: Regulation Of Active C N and P Fluxes In The Nscsmentioning
confidence: 62%