Zooplankton Niches and the Community Structure Controversy

Lane, Patricia A.

doi:10.1126/science.200.4340.458

Cited by 14 publications

(8 citation statements)

References 16 publications

(10 reference statements)

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“…Barange (1990) showed that vertical segregation was extended to the whole euphausiid community, suggesting that the 2 species considered are examples of sub-communities of the whole community (sensu Angel & Fasham 1974). With diffuse competition (Lane et al 1978) by other species (Barange 1990) not to be dismissed, the results presented are evidence for a strong structure of the shelf break zooplankton con~munity dunng the study.…”

Section: Resultssupporting

confidence: 48%

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Diet and feeding of Euphausia hanseni and Nematoscelis megalops (Euphausiacea) in the northern Benguela Current: ecological significance of vertical space partitioning

Barangé¹,

Gibbons²,

Carola³

1991

Mar. Ecol. Prog. Ser.

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Patterns of diel migration and feeding of Euphausia hanseni and Nernatoscelis rnegalops were investigated in waters of the northern Benguela (Namibia) upwelling system. N. megalops migrated to just below the thermocline at night and fed maximally in the early evening E. hanseni migrated to above the thermocline at night and fed progressively throughout the night. Although both species were omnivorous and consumed similar size ranges of copepod prey, differential prey sizefrequency with depth resulted in E. hanseni consuming mostly small-sized copepods and N. megalops preferring m e d u m size classes. At depths of overlap the 2 species appeared to partition copepod food resources on the basis of size. Verhcal spatial partitioning is examined in light of temporal and dietary separation, and overlapping horizontal distribution patterns of the species in the northern Benguela upwelling system. It is concluded that vertical space partitioning is a reflection of the structure of shelf break zooplankton communities, which is a strategy of sharing highly productive areas and avoiding competition.

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Section: Resultssupporting

confidence: 48%

“…. tion by performing vertical migration and vertically is0 -partitioning the space (Lane et al 1978, Ambler & Miller 1987), but there is some disagreement about what extent of diet or space partitioning is sufficient to -infer that competition is a dominant regulatory force in zooplankton communities (Haury & Wiebe 1982).…”

Section: Introductionmentioning

confidence: 99%

Diet and feeding of Euphausia hanseni and Nematoscelis megalops (Euphausiacea) in the northern Benguela Current: ecological significance of vertical space partitioning

Barangé¹,

Gibbons²,

Carola³

1991

Mar. Ecol. Prog. Ser.

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“…Lane (1) indicates that we applied the individualistic concept to our analyses and concludes that, since a zooplankton community possesses structure, this is an invalid procedure. First, we did not apply the individualistic concept to our data.…”

mentioning

confidence: 99%

“…Lane is correct in stating that "Community structure in nature has been difficult to identify and more difficult to quantify" (1). Our approach (2) was an attempt to interrelate the activities of the limnetic species of zooplankton living together in Mirror Lake over a period of a year.…”

mentioning

confidence: 99%

“…Lane claims (1) that she is studying zooplankton community structure but she considers only calanoid copepods and cladocerans. Increasing evidence indicates that rotifers play a major role in energy transfer (8,11,14) and nutrient cycling (8) (1). Isoline values must be chosen but different choices gave response surfaces of similar form for the two dominant species in the lake ( Fig.…”

mentioning

confidence: 99%

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Response : Zooplankton Niches and the Community Structure Controversy

Makarewicz¹,

Likens²

1978

Science

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Diatoms in daphnid culture and bioassay

Keating

Dagbusan

1986

Enviro Toxic and Chemistry

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For daphnids, the diatom Nitzschia frustulum is both a nutritionally desirable food and a source of essential organics not adequately provided by several green algae commonly fed daphnids in bioassays. Although a diet based on only one alga, Chlamydomonas reinhardti, generated more progeny per individual Daphnia pulex, progeny from broodmates fed diets differing only in that they also included diatoms were consistently more tolerant in acute toxicity bioassays. Feeding studies and bioassays were done in wholly defined inorganic media (MS system) that had contributed all essential inorganic nutrients for more than 100 consecutive generations of test daphnids. This limited the possibility of misinterpretation due either to deficiencies resulting from the absence of essential inorganics or to variations in media. Algae were grown in wholly defined inorganic media, versions of A‐MS (algal version) that were similar to animal media excepting that additional N, P and Si, and the three vitamins (B12, thiamine, biotin) known to be needed by many algae were included.

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Zooplankton Niches and the Community Structure Controversy

Cited by 14 publications

References 16 publications

Diet and feeding of Euphausia hanseni and Nematoscelis megalops (Euphausiacea) in the northern Benguela Current: ecological significance of vertical space partitioning

Diet and feeding of Euphausia hanseni and Nematoscelis megalops (Euphausiacea) in the northern Benguela Current: ecological significance of vertical space partitioning

Response : Zooplankton Niches and the Community Structure Controversy

Diatoms in daphnid culture and bioassay

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