Spatial Use of an Equatorial Coastal System (East Africa) by an Arthropod Community in Relation to Periodically Varying Environmental Conditions

Colombini, I.; Aloia, A.; Fallaci, M.; Pezzoli, G.; Chelazzi, L.

doi:10.1006/ecss.1998.0374

Cited by 13 publications

(4 citation statements)

References 26 publications

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“…Also, 5 and 42 individuals trap ÿ1 h ÿ1 were collected from White Tower Bay in this study and by Chelazzi et al (unpublished data), respectively. On the other hand, Colombini, Aloia, Fallaci, Pezzoli, and Chelazzi (1998) report densities of 108 individuals trap ÿ1 h ÿ1 for the coast of Somalia, using the same technique.…”

Section: Not Determinedmentioning

confidence: 99%

Low faunal diversity on Maltese sandy beaches: fact or artefact?

Deidun

Azzopardi

Saliba

et al. 2003

Estuarine, Coastal and Shelf Science

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Eight sandy beaches on Malta and two on Gozo were sampled for macrofauna to test the hypothesis that Maltese beaches have an intrinsically low diversity. Stations distributed in the supralittoral (dry zone), mediolittoral (wet zone) and upper infralittoral (submerged zone to 1 m water depth) were sampled by sieving core samples and standardised searching during daytime, and pitfall trapping and standardised sweeping of the water column using a hand-net at night, as appropriate. Physical parameters of the sediment were measured and human occupancy of the beaches was estimated.From the supralittoral and mediolittoral, 39 species represented by 1584 individuals were collected by the combined techniques of pitfall trapping, sieving and standard searching. For Ramla beach, which had the highest diversity, 267 individuals representing 25 infaunal species were collected by sieving from a combined volume of 1.175 m 3 of sand, and 149 individuals representing 28 epifaunal species were collected by standardised searching from a combined area of 700 m 2 of sand during two winter and two summer sampling sessions between 1992 and 1993. For nine other beaches sampled during the summer of 2000, only six macrofaunal species were collected from core samples, with overall population densities ranging from 4.13 to 45.45 individuals m ÿ2 . Only 92 individuals belonging to 12 species were collected by hand-net from the uppermost infralittoral of five beaches sampled using this method during the summer of 2000. Taxa of gastropods, bivalves, decapods, mysids and staphylinid beetles generally abundant on Mediterranean sandy beaches, were entirely absent from the beaches sampled.Few correlations that could explain the impoverishment of Maltese sandy beaches were found between physical parameters and faunal abundances, and other factors such as inadequate sampling effort, human disturbance and marine pollution were also excluded; however, seasonally biased sampling may partly explain the results obtained. One factor that may explain why certain species are missing could be lack of recruitment, due to Malta's geographical isolation from the European and African mainlands.

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Section: Not Determinedmentioning

confidence: 99%

Low faunal diversity on Maltese sandy beaches: fact or artefact?

Deidun

Azzopardi

Saliba

et al. 2003

Estuarine, Coastal and Shelf Science

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“…Different species tailor surface activity periods to time of day, tides, moon phase, predation risk, sea conditions, and more (Colombini et al, 1994(Colombini et al, , 1996(Colombini et al, , 1998(Colombini et al, , 2000Fallaci et al, 1996;Lastra et al, 2010). At higher trophic levels, shorebirds spatially partition habitat use to reduce antagonistic interactions but also structure their foraging habits around tide level with speciesspecific foraging times in relation to low tide rather than time of day (Burger et al, 1977;Neuman et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Habitat partitioning by mobile intertidal invertebrates of sandy beaches shifts with the tides

et al. 2022

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Coexistence of similar species can be influenced by the intensity of interspecific interactions, which often depends on the availability of limiting resources. Habitat availability varies strongly with tidal phase in many intertidal ecosystems, potentially affecting interspecific interaction strength, particularly for mobile species. Four closely related species of highly mobile intertidal detritivores (talitrid amphipods Megalorchestia californiana, M. corniculata, M. benedicti, M. minor) inhabit sandy beaches in southern California, where they consume wave-cast macroalgal wrack originating on coastal reefs. Their coexistence suggests that mechanisms, such as niche separation, are operating to weaken competition among these species. To evaluate this possibility, we

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“…Macroinvertebrates such as amphipods, isopods, and insects can use these resources at different stages of decomposition for shelter and food (Koop and Field 1980;Griffiths et al 1983;Marsden 1991aMarsden , 1991bCrawley and Hyndes 2007;Olabarria et al 2009). Among the wrack community, amphipods of the family Talitridae have received special attention as pioneers in the colonization of macroalgae deposited on the strandline and are responsible for the highest consumption rates (Griffiths and Stenton-Dozey 1980, Inglis 1989, Colombini et al 1998, Adin and Riera 2003. These animals are capable of consuming algae, accelerating the decomposition process, and removing substantial amounts (more than 50%) of deposited macrophytes from beaches (Griffiths et al 1983, Colombini et al 2000, Dugan et al 2003, Lastra et al 2008, Olabarria et al 2009.…”

Section: Introductionmentioning

confidence: 99%

“…Macroinvertebrados como los anfípodos, isópodos e insectos pueden usar estos recursos durante las diferentes etapas de descomposición como refugio y alimento (Koop y Field 1980;Griffiths et al 1983;Marsden 1991aMarsden , 1991bCrawley y Hyndes 2007;Olabarria et al 2009). Entre éstos, los anfípodos de la familia Talitridae han recibido especial atención como pioneros de la colonización de macroalgas varadas y son responsables de las tasas de consumo más altas (Griffiths y Stenton-Dozey 1980, Inglis 1989, Colombini et al 1998, Adin y Riera 2003. Estos animales tienen la capacidad de consumir algas, acelerando el proceso de descomposición y retirando grandes cantidades (más del 50%) de los macrófitos depositados en las playas (Griffiths et al 1983, Colombini et al 2000, Dugan et al 2003, Lastra et al 2008, Olabarria et al 2009.…”

Section: Introductionunclassified

Analysis of feeding behavior and food consumption rate of Atlantorchestoidea brasiliensis (Crustacea: Talitridae)

et al. 2012

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Talitrid amphipods are considered one of the most important wrack-deposit consumers in the intertidal zone of sandy beaches due to their ability to remove extensive amounts of macrophytes. The quantity and composition of drift macrophytes can influence the consumption and demographic rates of talitrid species. However, on coasts with a low contribution of macrophytes, where organic material is typically composed of debris, algal fragments, and vascular plants, the feeding behavior of talitrids is poorly understood. Along the south coast of Brazil, the amphipod Atlantorchestoidea brasiliensis is the most abundant species of macrofauna on exposed sandy beaches that do not have a high abundance of macroalgal wrack. In order to understand the feeding behavior of this species, experiments on food preference and consumption rates were carried out, and the ability to feed on the surface or buried within the substrate was also tested. Food items offered included the sand crab Emerita brasiliensis, the wedge clam Donax hanleyanus, the mullet fish Mugil sp., and the alga Ulva sp., species that commonly comprise debris on the drift line. Adult amphipods showed a broad feeding range. The most commonly consumed food items were E. brasiliensis and D. hanleyanus, which were consumed more during the night, while Mugil sp. was the least consumed item during both the day and night. In the food preference trials, algal consumption was negligible, suggesting that feeding on debris is more important for this species. Amphipods preferred fresh algae rather than dried algae when simultaneously offered both food items. Our results indicate that talitrids have different feeding strategies and behavior according to the type of organic material deposited on the beach.

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Spatial Use of an Equatorial Coastal System (East Africa) by an Arthropod Community in Relation to Periodically Varying Environmental Conditions

Cited by 13 publications

References 26 publications

Low faunal diversity on Maltese sandy beaches: fact or artefact?

Low faunal diversity on Maltese sandy beaches: fact or artefact?

Habitat partitioning by mobile intertidal invertebrates of sandy beaches shifts with the tides

Analysis of feeding behavior and food consumption rate of Atlantorchestoidea brasiliensis (Crustacea: Talitridae)

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