Seasonal Zonation Patterns of Benthic Amphipods in a Sandy Shore Surf Zone of Korea

Yu, Ok Hwan; Soh, Ho Young; Suh, Hae‐Lip

doi:10.1651/0278-0372(2002)022[0459:szpoba]2.0.co;2

Cited by 17 publications

(18 citation statements)

References 31 publications

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“…All species in the epi-infaunal, epifaunal and periphytic groups were first classified to SA group, except for some gammarid amphipods such as Pontogeneia rostrata and Corophium spp. that have been reported empirically less firmly attached to seagrass blades (e.g., Crawford, 1937;Yu et al, 1999;Saigusa et al, 2000). All caprellid species (nine species) categorized into periphytic groups by Sawamura (2000) were classified to SA group.…”

Section: Macrofaunal Groupingmentioning

confidence: 93%

Temporal and spatial macrofaunal community changes along a salinity gradient in seagrass meadows of Akkeshi-ko estuary and Akkeshi Bay, northern Japan

et al. 2007

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Temporal and spatial variation of the macrofaunal community was investigated in seagrass meadows in Akkeshi-ko estuary and coastal area of Akkeshi Bay, northern Japan. We specifically addressed the question of how the salinity gradient in seagrass meadows affects the species richness, abundance and similarity of faunal groups classified based on the degree of association with the seagrasses, i.e. highly motile species that drift in the water column among seagrass blades (drift-fauna, DF group) and less motile species that are tightly associated with seagrass substrates (seagrass-associated fauna, SA group).A total of 70 species were collected semi-quantitatively using an epibenthic sledge, among which more than one third of the species were captured in all areas, and a quarter of species only in the marine area. Significant spatial variation in species richness, as well as a positive relationship between salinity and species richness was found for most sampling occasions and for both functional groups. Whereas, relationship between salinity and abundance of macrofauna was not clear although significant time and site interactions were found for both functional groups. Patterns of similarity of assemblages varied between the functional groups: clear differences by sampling sites were discerned for DF group but not for SA group. These results provided evidence that the macrofaunal community structures in seagrass beds varied with the salinity gradient, but the pattern differed with time and between functional groups, possibly due to the effect of biotic and abiotic factors that also changed with salinity.

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Section: Macrofaunal Groupingmentioning

confidence: 93%

Temporal and spatial macrofaunal community changes along a salinity gradient in seagrass meadows of Akkeshi-ko estuary and Akkeshi Bay, northern Japan

et al. 2007

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“…McLachlan (1998) and Dugan et al (2004) provided further evidence of the role of competitive interactions in experiments where changes in burrowing performance of one species were monitored at different densities of other species, even though these effects could be minimal at field densities (McLachlan 1998). Yu et al (2002) found that feeding habits in 4 sublittoral amphipods could explain variations in zonation; when dietary composition overlapped, spatial segregation reduced competition for food.…”

Section: Spatial Structure and Patch Dynamicsmentioning

confidence: 99%

Patterns, processes and regulatory mechanisms in sandy beach macrofauna: a multi-scale analysis

Defeo

McLachlan²

2005

Mar. Ecol. Prog. Ser.

415

328

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“…On the other hand, G. japonica was found to feed on a more varied diet, including items such as detritus, polychaete juveniles and harpacticoid copepods. G. japonica did not consume the same harpacticoid copepod species, which are the main food item of Synchelidium amphipods (Yu et al 2002b). We suggest, therefore, that dietary differences lead to less competition for food between G. japonica and the 2 species of Synchelidium and that this favors coexistence.…”

Section: Discussionmentioning

confidence: 94%

“…These amphipods occupy the lower part of the water column from a depth of 1 m (measured at low water during the spring tide) and do not exhibit seasonal or diel migration (Yu 2001). S. lenorostralum is known to feed mainly upon benthic harpacticoid copepods, suggesting an important role in biological interactions of the sandy shore surf zone (Yu et al 2002b). Despite their abundance and potentially important contribution to food webs of sandy shore surf zone habitats, there is no information on the feeding characteristics of different species or different ontogenetic stages within species.…”

Section: Resale or Republication Not Permitted Without Written Consenmentioning

confidence: 99%

Feeding ecology of three amphipod species Synchelidium lenorostralum, S. trioostegitum and Gitanopsis japonica in the surf zone of a sandy shore

Yu¹,

Suh²,

Shirayama³

2003

Mar. Ecol. Prog. Ser.

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The influence of seasonal and ontogenetic changes on the dietary composition of 3 amphipod species (Synchelidium lenorostralum, S. trioostegitum and Gitanopsis japonica) were studied in the surf zone of a sandy shore habitat in Dolsando, southern Korea. The 2 species of Synchelidium were found to be carnivorous feeders, consuming mainly benthic harpacticoid copepods, whereas G. japonica had a diet consisting of both copepods and detritus. The dietary composition of S. lenorostralum and S. trioostegitum overlapped for all ontogenetic stages. Little overlap was found in the dietary composition of G. japonica compared with the 2 Synchelidium species, a characteristic that might favor the co-existence of the 3 species. S. lenorostralum displayed significant differences in dietary composition between sexes, among developmental stages, and over the seasonal cycle. For S. trioostegitum, dietary composition varied over the seasonal cycle. Juveniles of Synchelidium fed mainly on copepod nauplii and nematodes as well as on benthic harpacticoid copepods. Our results suggest that the biological interactions between benthic amphipods and meiofauna, such as benthic harpacticoid copepods and nematodes, may be important in the trophic chain of sandy shore surf zone habitats.KEY WORDS: Synchelidium lenorostralum · S. trioostegitum · Gitanopsis japonica · Amphipoda · Feeding · Sandy surf zone Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 258: [189][190][191][192][193][194][195][196][197][198][199] 2003 sandy shore habitats, often dominating benthic macrofaunal communities in terms of both numbers and biomass (Fenchel et al. 1975, Wijnsma et al. 1999, Dittmann 2000. Moreover, amphipods are considered to be one of the most important secondary producers (Carrasco & Arcos 1984) and a major food source for a variety of marine predators (Kline & Wood 1996, Schlacher & Wooldridge 1996, Beare & Moore 1997, MacNeil et al. 1999, Takahashi et al. 1999. Amphipods play an important role in surf zone food webs, acting as a trophic link from primary producers to higher-order consumers. Clearly, quantitative assessments of trophic relationships between amphipods and their prey/predators are important for our understanding of energy flow in sandy shore surf zone environments (Gerdol & Hughes 1994).Various aspects of amphipod feeding activity have been studied, including diet (Fenchel et al. 1975, Biernbaum 1979, Nielsen & Kofoed 1982, Icely & Nott 1985, Stuart et al. 1985, diel feeding patterns (SainteMarie 1986, Gerdol & Hughes 1994, Ingolfsson & Agnarsson 1999) and the influence of food quality on growth and reproduction (Gee 1988, Johnson & Wiederholm 1989, Delong et al. 1993, Pöckl 1995, Poltermann 2000. These studies have provided basic information on the feeding ecology of freshwater and marine amphipods inhabiting sublittoral and intertidal habitats. However, there is no information available on the feeding characteristics of amphipods in sandy shore surf zone habitats.In the s...

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Seasonal Zonation Patterns of Benthic Amphipods in a Sandy Shore Surf Zone of Korea

Cited by 17 publications

References 31 publications

Temporal and spatial macrofaunal community changes along a salinity gradient in seagrass meadows of Akkeshi-ko estuary and Akkeshi Bay, northern Japan

Temporal and spatial macrofaunal community changes along a salinity gradient in seagrass meadows of Akkeshi-ko estuary and Akkeshi Bay, northern Japan

Patterns, processes and regulatory mechanisms in sandy beach macrofauna: a multi-scale analysis

Feeding ecology of three amphipod species Synchelidium lenorostralum, S. trioostegitum and Gitanopsis japonica in the surf zone of a sandy shore

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