Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

Read, Geoffrey B.

doi:10.1080/00288330.1984.9516061

Cited by 12 publications

(6 citation statements)

References 19 publications

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“…Capitella capitata was also frequent in the upper tidal levels of the beach, as observed earlier (Dauer & Simon, 1975;Amaral, 1979;Shackley, 1981;Read, 1984;Amaral et aI., 1990;Corbisier, 1991). The occurrence of this species is related to fine and medium sediments (Fauchald & Jumars, 1979;Shackley, 1981) or with mud flats (Butman & Grassle, 1992), which agrees with the results obtained in this study, on species dominance in fine and poorly sorted sand.…”

Section: Discussionsupporting

confidence: 92%

“…However, Read (1984) found H filiformis exdusively dose to the water line, and considered it as a subtidal species that extends into the intertidal region. The species can tolerate wide oscillations of salinity and different sediment types (Read, 1984), occurring :fi:equentlyin organically enriched locations (Dauer & Conner, 1980;Beukema, 1991;Morgado et aI., 1994;Amaral et ai., 1998). This species attained a high population levei in the Barra Velha Beach, a known polluted environment, where it occurred predominantly in finer sediments.…”

Section: Discussionmentioning

confidence: 99%

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Polychaete zonation on sandy beaches of São Sebastião Island, São Paulo State, Brazil

Reis

Morgado

Denadai

et al. 2000

Rev. Bras. Oceanogr.

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This study was performed in the intertidal zone of Barra Velha, Perequê, and Engenho d'Água beaches, located on São Sebastião Island (São Paulo State, Brazil), to assess the composition, abundance, and zonation of the polychaete community in the intertidal zone. Four structurally different sectors were established, two on Barra Velha (I and lI), one on Perequê, and one on Engenho d'Água. Each sector was divided into 3 tidal levels (lower, middle, and upper), in which 5 or 6 random samples were taken seasonally using a corer of 0.01 m2 in area. Laeonereis acuta, Capitella capitata, and Heteromastus filiformis dominated in the upper tidal levels, and Scoloplos (Leodamas) sp. and Cirriformia tentaculata in the lower levels. The structural complexity of Engenho d'Água, caused by rocky fTagments mixed with sand, supported the richest and most diverse polychaete fauna of ali the sectors. The salinity of the interstitial water and the organic matter content were the principal factors related to the zonation patterns at these sites.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Polychaete zonation on sandy beaches of São Sebastião Island, São Paulo State, Brazil

Reis

Morgado

Denadai

et al. 2000

Rev. Bras. Oceanogr.

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“…The distribution of G. japonica in the inner high inundation flat of the reserve agrees with those reported in other regions where G. japonica is abundant at low tidal levels (northern New Zealand, [46]; western Mexico and the United States of America, Warnock N and others. unpublished data).…”

Section: Discussionsupporting

confidence: 89%

Landscape structured by physical settings and benthic polychaete and avifauna habitat uses in a mangrove-vegetated estuary

Shih

Ding

Chen

et al. 2019

Preprint

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2 15 Abstract 16 Mangrove expansion monopolizes estuarine landscapes by diminishing habitat diversity and 17 hence biodiversity. Physical landcover types, including mangrove vegetation, influence polychaete 18 and avifauna habitat uses. The connections between the physical to biota-associated landscapes 19 warrant investigation. We determine how to best describe the landscape in a mangrove-vegetated 20 wetland according to the physical, polychaete and bird domains and identify what physical 21 attributes would affect the biota-associated landscapes. Differences among the physical and biota-22 associated landscapes were evaluated using multivariate ordination analyses. Six physical 23 landcover types were aligned along elevation, inundation and sedimentary gradients. The 24 polychaete-associated landscape was structured by three landcover types, mainly mangroves and 25 tidal flats with intermediate and high inundation. Deposit-feeding spionid and nereid, carnivorous 26 goniadid and suspension-feeding sabellid polychaetes depended on the different landcover types. 27 Shorebirds occurred distinctively in tidal flats with large, open surface areas. Egrets characterized 28 tidal flats and mangroves, and foliage and ground gleaners characterized mangroves. Open tidal 29 flats are crucial to polychaetes, which are the main prey of shorebirds and are also important to 30 egret foraging. Our results suggest that effective management strategies for conserving these 31 migratory birds require the maintenance of open tidal flats in the landscape. 32 33 Keywords: Landcover types; Physical setting; Biota-coupled landscape; Polychaete assemblage; 34 Bird assemblage 3 35 Introduction 36 Essential components of a healthy mangrove ecosystem include mud and sand flats, tidal 37 waterways, shallow water areas and circulating waters in addition to mangrove stands [1, 2]. These 38 mosaic and interconnected landcover types make mangrove ecosystems varied in terms of 39 landscape function and the production of both terrestrial and aquatic organisms [3-5]. Furthermore, 40 mangrove ecosystems are also among the most threatened ecosystems on Earth due primarily to 41 the devastating effects of anthropogenic activities [6, 7] and natural disturbance [8]. Assessments 42 of the relationships between the supplies provided by mangroves and demand from human society 43 have demonstrated intimate bottom-up and top-down connections between the functions of 44 mangrove ecosystems and the services they offer to human wellbeing [9]. When considering 45 mangrove trees alone, they compose a simple ecosystem with limited vegetation niches and low 46 bird species richness [10, 11]. At the landscape level, however, landscape heterogeneity within 47 both mangrove ecosystems and their surroundings is crucial in characterizing mangrove-dependent 48 bird assemblages [11-13]. Mangroves have been found to have both positive and negative roles in 49 ecosystems. For example, as they act as both foundation species and ecosystem engineering 50 species, mangroves ca...

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“…Four sampling stations for sediment and one for seagrass blades were established on an intertidal fine sand bank (Mana Bank) in Pauatahanui Inlet, the eastern arm of Porirua Harbour, Wellington, New Zealand (41Â°06'S 174O54'E). Tidal sea level change within the inlet is semidiurnal and near symmetrical, with mean spring range 1.25 m and mean neap range 0.4 m (Read 1984). Local sea level and tidal range are commonly influenced by ambient meteorological conditions (pers.…”

Section: Methodsmentioning

confidence: 99%

Distribution and behaviour of meiofaunal copepods inside and outside seagrass beds

Hicks¹

1986

Mar. Ecol. Prog. Ser.

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The abundance and species composition of meiobenthic copepods from blades and subcanopy sediments of seagrass Zostera capncorni beds has been compared with adjacent unvegetated sediment banks in Pauatahanui Inlet, New Zealand. A range of sampling protocols has established that abundance on blades and on sedirnents beneath dense growths of Zostera is significantly higher than on nearby bare sand substrata. Further away from beds abundance increases to a level approximating that of seagrass beds when individuals on blades and subcanopy sediments are taken together. Species richness is nearly twice as high on blades as on sedimentary substrata either inside or outside beds, although in general there is no close association between abundance or species richness and the surface area of individual Zostera blades. Multiple pairwise comparisons of numbers of individuals and species sampled over 4 independent 24 h periods at both high and low tide, day and night, demonstrate that significantly more individuals and species occur on Zostera blades at low tide than at high tide irrespective of light regime. In contrast, those on subcanopy sediments show no such tidal variability m abundance. Day or night there are more species on blades than on sediments irrespective of tidal state. Reductions in faunal abundance during high water suggested a migratory behaviour coincident with tidal inundation. Experimentally emplaced emergence traps confirmed that a substantial proportion of the Zostera bed copepod fauna actively swim into the water column during high water, explaining the reductions in abundance found when sampling blades and sediments alone. Significantly more copepods enter traps emplaced over Zostera beds compared with unvegetated sites. Over 70 % of the trapped fauna is derived from blades or as phytal itinerants, establishing an important difference between copepod faunas from vegetated and unvegetated habitats. An earlier view that the appearance of meiofaunal copepods in the water column was due primarily to passive hydrodynamic resuspension needs revision in the light of pronounced swimming activities amongst seagrass inhabitants. Observations on fish predators in seagrass systems were made and the ecological implications of active benthic-pelagic exchanges of seagrass copepods are discussed.

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Persistence of infaunal polychaete zonation patterns on a sheltered, intertidal sand flat

Cited by 12 publications

References 19 publications

Polychaete zonation on sandy beaches of São Sebastião Island, São Paulo State, Brazil

Polychaete zonation on sandy beaches of São Sebastião Island, São Paulo State, Brazil

Landscape structured by physical settings and benthic polychaete and avifauna habitat uses in a mangrove-vegetated estuary

Distribution and behaviour of meiofaunal copepods inside and outside seagrass beds

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