Spatial, temporal, and behavioral patterns in emergence of zooplankton in the lagoon of Heron Reef, Great Barrier Reef, Australia

Jacoby, Charles A.; Greenwood, J. A.

doi:10.1007/bf00397762

Cited by 83 publications

(82 citation statements)

References 25 publications

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“…As noted earlier, the majority of lagoon floor taxa, unlike other resident demersal plankton (see Jacoby & Greenwood 1988 were most abundant during austral spring and early summer from September to December (Fig. 4).…”

Section: Lagoon Floor Communitysupporting

confidence: 69%

“…As noted earlier, the majority of lagoon floor taxa, unlike other resident demersal plankton (see Jacoby & Greenwood 1988 for review) or hyperbenthic species in other ecosystems (Mees & Jones 1997), do not undertake extensive nocturnal migrations into the water column and only Anisomysis laticauda, Acartia australis, and Cyridina sp. may play an important part in the tight benthic-pelagic coupling prevalent on coral reefs (Alongi 1998 were most abundant during austral spring and early summer from September to December (Fig.…”

Section: Lagoon Floor Communitymentioning

confidence: 84%

“…These conflicting patterns may not be due to sampler bias alone, but may also be due to the different phases of the moon. Decreased nocturnal light level is a major cue in stimulating emergence and subsequent vertical migration of demersal zooplankton (Alldredge & King 1980, Jacoby & Greenwood 1988 and could very well have a similar influence on A. australis. In February, sampling was conducted during the first quarter, but in October the moon was full.…”

mentioning

confidence: 99%

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The hyperbenthic plankton community: composition, distribution, and abundance in a coral reef lagoon

Carleton¹,

Hamner²

2007

Mar. Ecol. Prog. Ser.

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Seasonal and diel variations in community structure and abundance of the lagoon hyperbenthic community were examined at Davies Reef, Great Barrier Reef. The lagoon floor community differed from that in the overlying water, it was faunistically more uniform, and it was assembled into statistically distinct seasonal and diel groupings. The lagoon floor community was characterized by reef-associated mysids, gammarids, calanoids, ostracods, harpacticoids, cyclopoids, nematodes, caprellids, and cumaceans. The community was most distinctive in October. The water column community had greater diel than seasonal variability. The nocturnal water column community was characterized by decapod larvae, zoea, larvaceans, fish larvae, gastropod larvae, and nauplii, but was dominated numerically by calanoid copepods (> 60%). Catches on the lagoon floor ranged from 750 to 3330 ind. m -3 , with peak abundance in October, while water column catches were lower (25 to 2500 ind. m -3 ), with peak nocturnal abundance in February. Most species in the hyperbenthic community do not migrate into the water column at night, but instead remain concentrated near the lagoon floor. Only the mysid Anisomysis laticauda, the copepod Acartia australis, and the ostracod Cypridina sp. A were consistently captured on the lagoon floor by day and in surface waters at night. The lagoon hyperbenthic community probably contributes to coral reef ecosystems through the remineralization of organic detritus. Given the high abundance of relatively large individuals, the contribution of the resident, lagoon floor community to coral reef ecosystems must be substantial.KEY WORDS: Hyperbenthos · Plankton · Coral reef lagoon · Community structure Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 336: [77][78][79][80][81][82][83][84][85][86][87][88] 2007 Coral reef lagoons are zones of net heterotrophy requiring input of detritus from adjacent areas of high primary production (Wilkinson 1987, Alongi 1988. Initial attempts to model detritus-based food webs within the relatively enclosed lagoon at Davies Reef accounted for only 20% of incoming detrital material (MECOR -microbial ecology of a coral reef; Wilkinson 1987). These early studies concentrated on processes within the water column and within the sediments, and did not consider the role of the rich diversity of animals that blanket the lagoon floor. Subsequent studies determined that macro-infauna account for 3 to 11% of total organic matter (Riddle et al. 1990) and that sediment bacteria seasonally consume from 54 to 100% of the available carbon (Hansen et al. 1992), further enhancing our understanding of benthic processes, but still ignoring the trophodynamic role of the hyperbenthos.Carleton & Hamner (1987) developed a benthic sampler for use in coral reef lagoons to effectively study seasonal and diel variation in mysids (Carleton & Hamner 1989), an integral component of the hyperbenthos in many littoral and coastal habitats (Mauchline 1980). Here,...

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Section: Lagoon Floor Communitysupporting

confidence: 69%

Section: Lagoon Floor Communitymentioning

confidence: 84%

mentioning

confidence: 99%

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The hyperbenthic plankton community: composition, distribution, and abundance in a coral reef lagoon

Carleton¹,

Hamner²

2007

Mar. Ecol. Prog. Ser.

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“…Hauspie & Polk, 1973;Porter & Porter, 1977;Hammer, 1981;Sibert, 1981;Fulton, 1984;Decho, 1986;Hicks, 1986;Jacoby & Greenwood, 1988;Waiters, i988) indicate that emergence of sediment-associated meiofauna may occur on a worldwide scale. However, the high increase of planktonic biomass by swimming meiofauna is certainly restricted to shallow inshore waters.…”

Section: Semiplankton Worldwide Significant In Shallow Watersmentioning

confidence: 99%

Meiofaunal emergence from intertidal sediment measured in the field: significant contribution to nocturnal planktonic biomass in shallow waters

Armonies

1989

Helgolander Meeresunters

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Field studies on the occurrence of meiobenthos in the water column above intertidal sandflats have been performed near the Island of Sylt in the northern Wadden Sea. Swimming meiobenthos was strongly dominated by harpacticoid copepods. Many of them have a semiplanktonic fife-style. They rest in superficial sediment layers at low tide and swim in the water column at high tide. Swimming activity correlated negatively with light. The abundance in the water column was one order of magnitude higher during the night. Strong currents caused by storm tides significantly decreased meiobenthic abundance in the water column. Light and flow being constant, no significant changes of meiobenthic abundance per unit area occurred over a tidal cycle. Since holoplankton and meroplankton abundances correlated positively with the height of the water column, semiplanktonic meiobenthos may dominate the mesozooplankton in shallow waters. On an average, emergence of meiobenthos increased the mesozooplanktonic biomass by about 2 % during diurnal high tides over the entire tidal cycle, and by about 50 % during nocturnal high tides. Because of seasonal cycles of the dominant harpacticoids, this high contribution to planktonic biomass may be a summer phenomenon.

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“…Boaden & Platt 1971, Armonies 1988, Walters 1988), but in each case the time course of sampling has been either too constrained or too irregular to determine the magnitude or frequency of any inherent cyclic phenomena. Regular, short-term sampling of emergent meiofauna from subtropical sites has been undertaken over diel periods by Jacoby & Greenwood (1988 and Walters (1991), but these authors have not evaluated meiofauna in sediments relative to state of the tide. The only studies to integrate tidal and diel variability in abundance of meiofaunal taxa using repetitive and replicative sampling techniques are those of Coull & Feller (1988) and Feller et al (1990).…”

Section: Introductionmentioning

confidence: 99%

Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

Hicks¹

1992

Mar. Ecol. Prog. Ser.

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Short-term changes in the population density of 2 abundant species of sand dwelling rneiobenthic copepod and the population structure of the dornlnant species have been investigated in a New Zealand estuary. Samples were collected every 2 h for 24 h in a sampling regime that spanned 2 tidal cycles and 1 day/night cycle. Average sediment densities of Parastenhelia megarostrum were higher during periods of exposure than during periods of cover by tidal waters. Mean abundance of juveniles (copepodites) and adult males differed significantly in relation to the state of the tide. Females with and without egg sacs only indicate day/night differences at low tide. There were no tidal or diel differences in abundance for the interstitial species Paraleptastacus sp. For P. megarostrum, it is suggested that sediment abundance variability is tidal current flow/body size interactive. While the role of passive erosion is clearly important, it is argued that behavioural factors might also predispose copepodites to resuspension in the overlying water column. Die1 differences in abundance of adult females may indicate a response to changes in patchiness of presumed autotrophic food resources.

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Spatial, temporal, and behavioral patterns in emergence of zooplankton in the lagoon of Heron Reef, Great Barrier Reef, Australia

Cited by 83 publications

References 25 publications

The hyperbenthic plankton community: composition, distribution, and abundance in a coral reef lagoon

The hyperbenthic plankton community: composition, distribution, and abundance in a coral reef lagoon

Meiofaunal emergence from intertidal sediment measured in the field: significant contribution to nocturnal planktonic biomass in shallow waters

Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

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