The Distribution of Rock Pool Copepoda According to Tidal Level

Fraser, J. H.

doi:10.2307/1089

Cited by 20 publications

(33 citation statements)

References 2 publications

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“…Littorinid snails were found in pools of all zones (with the exception of 1 pool in the splash zone where they were never found) but were most abundant in high pools. The zonation of macrofauna that we observed is consistent with previous studies of tidepools on rocky shores (Fraser 1936, Ganning 1971, Daniel & Boyden 1975, Goss-Custard e t al. 1979, Femino & Mathieson 1980.…”

Section: Temporal and Spatial Patterns Of Abundancesupporting

confidence: 92%

“…Percentage cover of thick leathery forms, such as Fucus vesiculosus, and crustose macroalgal forms, such as Phymatolifhon sp., was greater in mid pools than in hlgh and splash pools. Similar zonation patterns were observed in studies by Fraser (1936) on the Isle of Man, UK, Green (1971) Ascophyllum nodosum) and crustose forms in pools throughout the intertidal gradient, but the pools in their study were lower than the ones we used. In our study, there was no clear zonation of sheets, or coarsely branched macroalgal forms, and among the fllamentous forms, only Cladophora sp.…”

Section: Temporal and Spatial Patterns Of Abundancesupporting

confidence: 88%

“…showed significant differences in abundance among zones. In contrast, other studies have found that some sheets and filamentous forms, such as the green algal genus Spongomorpha and the brown algal genus Scyfosiphon, were more abundant in lower pools, whereas others, such as the green algal genera Chaetomorpha, Cladophora and Enteromorpha, were more abundant in higher pools (Fraser 1936, Femino & Mathieson 1980, Sze 1982, Wolfe & Harlin 1988a.…”

Section: Temporal and Spatial Patterns Of Abundancementioning

confidence: 71%

“…Spongornorpha, fucoids and coralline algae such as Corallina) tend to be found mainly in pools located lower on the shore, whereas other forms (e.g. Enterornorpha) dominate in pools higher on the shore (Fraser 1936, Green 1971, Daniel & Boyden 1975, GossCustard et al 1979, Femino & Mathieson 1980, Dethier 1982, 1984, Sze 1982, Wolfe & Harlin 1988a, Kooistra et al 1989. Moreover, species diversity tends to decrease in pools with increasing intertidal height (Femino & Mathieson 1980, Huggett & Griffiths 1986, Wolfe & Harlin 1988b, Kooistra et al 1989.…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal variability of macrobenthic communities in tidepools on a rocky shore in Nova Scotia, Canada

Meta×as¹,

Hunt²,

Scheibling³

1994

Mar. Ecol. Prog. Ser.

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Spatial and temporal patterns in the distribution and abundance of macroalgae and macrofauna were measured in 4 pools in each of 3 intertidal zones (mid, high and splash) on a rocky shore near Halifax, Nova Scotia, Canada. Sheets, filamentous, coarsely branched, thick leathery, jointed calcareous, and crustose forms were the most abundant macroalgal functional groups, and mussels, l~ttorinid snails and whelks were the most abundant macroinvertebrates in the pools. Percentage cover of the late-successional macroalgal forms, such as thick leathery and crustose forms, was greatest in the mid pools where environmental fluctuations are smaller and more predictable. Percentage cover of the more opportunistic forms, such as sheets and filamentous algae, was variable among pools in all zones, whereas percentage cover of the other functional forms was most variable among mid pools on most sampling dates. Mussels and whelks were more abundant in mid pools, whereas littonnes were more abundant in the high pools. Macrofaunal abundance also was variable among pools within most zones on most sampling dates. Multiple regressions showed that grazer density, nutrient regime and physical characteristics of the tidepools can consistently explain the variability in percentage cover of late-successional macroalgal functional forms, but not of the more opportunistic forms. The horizontal spatial variability in percentage cover of macroalgae may result from differential recruitment of opportunistic forms, and/or differences in the physical characteristics of the pools which affect slow-growing, late-successional forms. The Shannon D~versity Index for the macroalgal and the macrofaunal assemblages was greatest in mid pools, suggesting that a smaller number of macroalgal and macroinvertebrate species can survive in the higher pools where conditions are harsher. Cluster analyses showed that the macroalgal assemblages were mostly similar among mid pools, and that macrofaunal assemblages of mid pools were similar to high pools, but not splash pools. Our study shows that macrobenthic community structure in tidepools does not vary consistently with the period of tidal isolation and there is large variability among pools within intertidal zones.

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Section: Temporal and Spatial Patterns Of Abundancesupporting

confidence: 92%

Section: Temporal and Spatial Patterns Of Abundancesupporting

confidence: 88%