Meiofauna sediment relations in leeward slope turf algae of Heron Island reef

Logan, D.P.; Townsend, Kathy A.; Townsend, K. J.; Tibbetts, Ian R.

doi:10.1007/s10750-008-9442-9

Cited by 25 publications

(15 citation statements)

References 29 publications

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“…However, the sediment community at Heron Reef is known to include abundant benthic microalgae (diatoms, dinoflagellates, cyanobacteria, and coralline algae) and macrofauna, including mud shrimps (Callianassa sp. ), polychaetes, nematodes, and gastropods (Werner et al 2006(Werner et al , 2008Logan et al 2008).…”

Section: Methodsmentioning

confidence: 99%

The influence of pore‐water advection, benthic photosynthesis, and respiration on calcium carbonate dynamics in reef sands

Rao

Polerecký

Ionescu

et al. 2012

Limnology & Oceanography

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To investigate diel calcium carbonate (CaCO 3 ) dynamics in permeable coral reef sands, we measured porewater profiles and fluxes of oxygen (O 2 ), nutrients, pH, calcium (Ca 2+ ), and alkalinity (TA) across the sedimentwater interface in sands of different permeability at Heron Reef, Australia. Background flushing rates were high, most likely as a result of infaunal burrow irrigation, but flux chamber stirring enhanced pore-water exchange. Light and pore-water advection fueled high rates of benthic primary production and calcification in sunlit surface sediments. In the light, benthic photosynthesis and calcification induced surface minima in Ca 2+ and TA and peaks in pH and O 2 . Oxygen penetration depth in coarse sands decreased from , 1.2 cm during the day to , 0.6 cm at night. Total oxygen uptake (TOU) in dark chambers was three to fourteen times greater than diffusive uptake and showed a direct effect of pore-water advection. Greater sediment oxygen consumption rates were observed in higher permeability sands. In the dark, TA release was not stimulated by increasing TOU because of a damping effect of pore-water advection on metabolic CaCO 3 dissolution efficiency. On a daily basis, CaCO 3 undergoes net dissolution in Heron Reef sands. However, pore-water advection can reverse the CaCO 3 budget and promote CaCO 3 preservation under the most energetic conditions.

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Section: Methodsmentioning

confidence: 99%

The influence of pore‐water advection, benthic photosynthesis, and respiration on calcium carbonate dynamics in reef sands

Rao

Polerecký

Ionescu

et al. 2012

Limnology & Oceanography

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“…In fact, biogenic habitat plays a key role in structuring the meiofaunal communities through provision of shelter and food (Gibbons, 1988a,b;Danovaro & Fraschetti, 2002;Arroyo et al, 2004;Danovaro et al, 2007;Logan et al, 2008;Urban-Malinga et al, 2008). While there are a few studies discussing the facilitation role of mussels on meiofauna-and most of the focus is on biodeposition effects, with sometime contrasting results-the general outcome is that organic matter emitted into mussel beds increases meiofaunal abundances (Norling & Kautsky, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…bivalvia, priapulida, oligochaeta, gastropoda, cnidaria and ascidiacea). The higher abundance of crustaceans taxa (in particular ostracods and amphipods) associated with the presence of algae could be due to their biological cycle being closely related to macroalgae, which in turn offers them nutrition and refuge from predation (Danovaro & Fraschetti, 2002;Frame et al, 2007;Logan et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…mussel beds and oysters, coral and vermetid reefs), increase the structural complexity of substrate and concur in physically and chemically structuring the intertidal, emerging as some of the most crucial determinants in structuring meiofaunal communities (Norkko et al, 2001;Danovaro & Fraschetti, 2002;Reise, 2002;Kostylev et al, 2005;Danovaro et al, 2007;Bianchelli et al, 2013). A lot of studies have shown the role of macroalgae in influencing meiofaunal settlement and distribution, trapping the sediment and providing detritus as useful food for grazers (Gibbons, 1988a;Arroyo et al, 2004;Urban-Malinga et al, 2008), refuges from predation and dislodgment, and ameliorating physical conditions by retaining water and offering protection from desiccation (Gibbons, 1988a, b;Danovaro & Fraschetti, 2002;Danovaro et al, 2007;Logan et al, 2008). The studies on meiofauna associated with oyster and mussel beds generally suggest that it is more related to functional trait organisms, such as biodeposition (Dittmann, 1990;Reise, 2002;Norling & Kautsky, 2007;Radziejewska et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Influence of environmental factors and biogenic habitats on intertidal meiofauna

et al. 2017

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This study investigated the influence of physical and chemical conditions and biotic factors on the distribution and diversity of meiofauna in intertidal zone along a geographical gradient. At 11 sites along the Italian coast, we studied the concurring role of environmental variables, trophic resources and the presence of habitat-forming species (macroalgae vs. mussels) in controlling the meiofaunal communities. The increase of water temperature combined with local thermal conditions was associated with a decrease in nematodes and copepods, with a consequent decrease in meiofaunal abundance towards the south. However, the increase in salinity, as geographical gradient decreases, and local thermal conditions favoured the settlement of a greater number of taxa, influencing communities' composition. The presence of macroalgae or mussels differently influenced the community structure of meiofauna on intertidal substrates and their response to environmental factors. From our results, the presence of macroalgae coverage appeared to reduce the impact of thermal stress on meiofauna and was associated with higher levels of meiofaunal diversity with respect to mussels. This work highlighted the importance of considering the interplay among biotic and abiotic factors, resulting in local combinations of environmental conditions, in order to understand the pattern of diversity and distributions of marine organisms.

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“…returned to the substrate, they preferred to live in association with coral rubble, macroalgae, and turf, even though macroalgae and turf covered only a small percentage of the area within the emergence tents. Macroalgae and turf are home to many harpacticoid copepods (Logan et al 2008;Kangtia et al 2014), and are an important link in providing food for coral reef fishes (Logan et al 2008;Kramer et al 2013). However, less is known about calanoid copepods living within macroalgae.…”

Section: Discussionmentioning

confidence: 99%

Neustonic copepods (Labidocera spp.) discovered living residentially in coral reefs

et al. 2017

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Pontellid copepods are archetypical representatives of the neuston-the highly specialized community living in the top 5-10 cm of the ocean surface. Their deep blue pigmentation and large eyes are unique adaptations to surface irradiation and carnivory, but poor prerequisites for survival in the transparent waters beneath the sea surface. Here, we report the discovery of three reef-associated representatives of this group-Labidocera bataviae A. Scott, 1909; L. pavo Giesbrecht, 1889; and Labidocera sp.-living residential in coral reefs. We (1) document the presence of Labidocera spp. for two separate coral reefs on two expeditions to Papua New Guinea, (2) describe their migration behavior and substrate preference, and (3) quantify the effects of benthic reef community composition on their abundance. All life stages of Labidocera spp. were 43 to 94 times as abundant at the reef sites as in offshore sites. Although pontellids are generally considered non-migrators, Labidocera spp. showed discernible diel vertical migrations: living in reef substrates during the day, emerging into the water column at night (sometimes more than once), and returning to the substrate at dawn. Labidocera spp. showed a pronounced substrate preference for coral rubble, microalgae, and turf, over branching coral, massive boulder coral, and sand.

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Meiofauna sediment relations in leeward slope turf algae of Heron Island reef

Cited by 25 publications

References 29 publications

The influence of pore‐water advection, benthic photosynthesis, and respiration on calcium carbonate dynamics in reef sands

The influence of pore‐water advection, benthic photosynthesis, and respiration on calcium carbonate dynamics in reef sands

Influence of environmental factors and biogenic habitats on intertidal meiofauna

Neustonic copepods (Labidocera spp.) discovered living residentially in coral reefs

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