Factors influencing the spatial variation in fish and macrocrustacean communities in the surf zone of sandy beaches in Belgium

Beyst, Bregje; Hostens, Kristian; Mees, Jan

doi:10.1017/s0025315402005337

Cited by 30 publications

(17 citation statements)

References 23 publications

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“…Feeding during the night would also reduce the risk of predation by visual predators such as sea birds and fish. Finally, the higher density values observed at low, night, spring tides suggests the three factors are influencing the population but that the time of day is the strongest influence, a finding supported by previous studies (Hindell et al, 2000;Beyst et al, 2002).…”

Section: Discussionsupporting

confidence: 81%

Ecology of a Population of Lissocrangon Stylirostris (Caridea: Crangonidae), with Notes on the Occurrence and Biology of Its Parasite, Argeia Pugettensis (Isopoda: Bopyridae)

Jarrín

Shanks

2008

Journal of Crustacean Biology

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A B S T R A C TThe smooth bay shrimp, Lissocrangon stylirostris, was sampled using a beach seine and a hyperbenthic sledge in the summer of 2006 at a dissipative sandy beach in southern Oregon. We investigated possible variations in the population structure due to environmental variables, preferred prey, sexual system employed, impacts due to parasitism by the bopyrid isopod Argeia pugettensis, and possible predators. The population was 63% female, and females were generally larger than males. The density of L. stylirostris varied significantly with the time of day. A cohort of small shrimp was observed from July to September while large adult shrimps were rare during the same months. The net effect was that shrimp densities were stable over the summer. The shrimps fed mostly at night on the mysid Archaeomysis grebnitzkii. The differences in female to male ratio, the larger size of females relative to males, and the relatively little overlap in size frequency distribution between males and females could be because this species exhibits a type of protandry. Both male and female shrimps supported an equal, high prevalence of, level of infestation by A. pugettensis (62%). The parasitized shrimps were larger in size than normal shrimps but had lower weight per length ratio. Very few brooding shrimps were parasitized (0.2%), and a higher percentage of parasitized shrimps had empty stomachs and significantly lower stomach contents. We hypothesize that the parasite is affecting the shrimp by producing variation in its normal size and weight, sterilizing females, and reducing its ability to capture food. Finally, individuals of English sole and Pacific staghorn sculpin individuals preyed on the shrimps.

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Section: Discussionsupporting

confidence: 81%

Ecology of a Population of Lissocrangon Stylirostris (Caridea: Crangonidae), with Notes on the Occurrence and Biology of Its Parasite, Argeia Pugettensis (Isopoda: Bopyridae)

Jarrín

Shanks

2008

Journal of Crustacean Biology

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“…The four species found in months with onshore wind might have occurred passively by drifting with wave action on the onshore wind. Notwithstanding, several studies have demonstrated that turbidity caused by wave action has a positive infl uence on species richness and/or abundance of fi sh assemblages in a surf zone (e.g., Lasiak, 1986;Beyst et al, 2002). Lasiak (1986) suggested that high wave action might protect small-sized fi shes against predators by means of turbidity, although there is increased risk of injury to the former, and Clark (1997) showed that fi sh species richness and diversity were higher at intermediate levels of wave action.…”

Section: Discussionmentioning

confidence: 99%

Seasonal dynamics of fish assemblage structures in a surf zone on an exposed sandy beach in Japan

Nanami

Endo²

2007

Ichthyol Res

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Seasonal dynamics in fi sh assemblage structure, comprising postlarval to early adult stages, in the surf zone on an exposed sandy beach on the Kashimanada coast were studied over a 2-year period. A total of 32 species and two higher group taxa were found. In terms of abundance, Salangichthys ishikawae, Mugil cephalus cephalus, Plecoglossus altivelis altivelis, and Engraulis japonicus were the four most dominant species. The results of cluster analysis and canonical correspondence analysis using 12 dominant species in terms of abundance revealed that water temperature and wind factor (wind speed × wind direction) had signifi cant independent associations on species occurrence patterns for 11 species; that is, occurrence of 11 species was signifi cantly related to water temperature and occurrence of 7 species was related to wind factor. Two species (S. ishikawae and P. altivelis altivelis) showed clear monthly increases in size, consequently suggesting their use of the surf zone as a nursery area. In contrast, M. cephalus cephalus and E. japonicus showed few increases in standard length, indicating their use of the surf zone only in their postlarval and/or juvenile stage. It is suggested that numerous fi sh species use the surf zone as shelter and/or a nursery area, even in the harsh conditions of an exposed sandy beach with great wave action.Key words Surf zone · Postlarval and juvenile fi sh · Fish assemblage structure · Water temperature · Wind factor areas for postlarval and juvenile fi shes (Kinoshita, 1993;Senta and Kinoshita, 1985; Arayama et al., 2002 Arayama et al., , 2003Suda et al., 2002), only a few such studies have been conducted on east coast exposed beaches because of the diffi culty in sampling caused by high wave action. Gomyoh et al. (1994) investigated fi sh assemblages at the surf zone on the Kashimanada coast, where the maximum wave height was 2.3 m, and recorded 48 species of postlarval and juvenile fi shes during a period of about 1 year. However, there have been no studies of fi sh assemblage structures including quantitative analyses of the relationships between fi sh fauna and environmental variables (e.g., water temperature and degree of wave action). Therefore, we could not precisely evaluate the importance of Japanese surf zones as nursery habitats for many species of marine fi shes.The purpose of the present study was threefold: (1) to determine the structure and dynamics of the fi sh assemblages on an exposed sandy beach located on the eastern coast of Japan over a 2-year period, (2) to clarify the relationships between fi sh assemblage structure and major environmental variables, and (3) to clarify seasonal changes in fi sh sizes to determine whether the sandy beach functioned as a nursery area for these species. IchthyologicalResearch

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“…11). Catches of fish and crustaceans are known to vary with turbidity (Stoner 1991, Beyst et al 2002. Maximum catch rates of dab Li manda limanda that occur in the same habitat as brown shrimp occurred in water with a clarity of 1 to 1.5 m (Bolle et al 2001).…”

Section: Opposing Trends In the Dutch Wadden Sea: Possible Mechanismsmentioning

confidence: 99%

Brown shrimp abundance in northwest European coastal waters from 1970 to 2010 and potential causes for contrasting trends

Tulp¹,

Bolle²,

Meesters³

et al. 2012

Mar. Ecol. Prog. Ser.

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We investigated long-term trends in abundance of the NE Atlantic population of brown shrimp Crangon crangon based on data collected in annual autumn surveys carried out along the coasts of the North Sea in The Netherlands, Germany and Denmark. Surveys covered some estuaries and intertidal areas, as well as shrimp fishery grounds. The 40 yr period showed distinct regional trend differences, but only in estuarine areas: the Western Dutch Wadden Sea (increase), the Eastern Dutch Wadden Sea (decrease) and the Oosterschelde (decrease). The decrease in the Oosterschelde coincided with the closure of this sea arm from fresh water inflow. Increases in the Western and Eastern Dutch Wadden Sea were driven primarily by increased abundance of small shrimp, suggesting that the causative mechanism likely affected younger shrimp. Trends in potential causes were examined in the 2 regions. Of all abiotic factors investigated, only water clarity decreased significantly in the west but not in the east. Mean abundance of potential predators (cod, whiting, shore crab and swimming crab) was used as an indicator of predation pressure. Shore crab showed similar increases in both areas. In the other 3 species, predator abundance in the east was generally initially higher than in the west, but declined towards similar densities in recent years. Shrimp fishing pressure in NW Europe has increased strongly since the 1990s. Preliminary, spatially resolved logbook data show that shrimp landings from the Western Wadden Sea followed this increase, but those from the Eastern Wadden Sea remained stable. Apart from mechanisms related to fishing pressure and water clarity, a candidate cause of differences in abundance may be differences in food condition or competition for food. Generally biomass of benthos, a primary food for shrimp, increased in the west and remained stable in the east. However, because brown shrimp are omnivorous, quantification of changing fractions of food available to them is difficult.

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Factors influencing the spatial variation in fish and macrocrustacean communities in the surf zone of sandy beaches in Belgium

Cited by 30 publications

References 23 publications

Ecology of a Population of Lissocrangon Stylirostris (Caridea: Crangonidae), with Notes on the Occurrence and Biology of Its Parasite, Argeia Pugettensis (Isopoda: Bopyridae)

Ecology of a Population of Lissocrangon Stylirostris (Caridea: Crangonidae), with Notes on the Occurrence and Biology of Its Parasite, Argeia Pugettensis (Isopoda: Bopyridae)

Seasonal dynamics of fish assemblage structures in a surf zone on an exposed sandy beach in Japan

Brown shrimp abundance in northwest European coastal waters from 1970 to 2010 and potential causes for contrasting trends

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