<i>Sabellaria nanella</i>(Sabellariidae): from solitary subtidal to intertidal reef-building worm at Monte Hermoso, Argentina (39°S, south-west Atlantic)

Bremec, Claudia; Carcedo, M. Cecilia; Santos, Eder dos; Fiori, Sandra

doi:10.1017/s0025315412000550

Cited by 7 publications

(6 citation statements)

References 19 publications

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“…Structural changes caused by physical ecosystem engineers result in a variation in the distribution of fluid and solid material termed abiotic changes (Jones et al, 2010). In the case of (Gram, 1968;Kirtley and Tanner, 1968;Main and Nelson, 1988), Sabellaria vulgaris (Wells, 1970), Sabellaria nanella (Bremec et al, 2013) under the designation of Special Areas of Conservation (SACs). They are defined as "submarine or exposed at low tide, rocky substrates and biogenic concretions".…”

Section: Engineered Structures Cause Grain-size Distribution Changesmentioning

confidence: 99%

Interplay between abiotic factors and species assemblages mediated by the ecosystem engineer Sabellaria alveolata (Annelida: Polychaeta)

Jones

Dubois

Desroy

et al. 2018

Estuarine, Coastal and Shelf Science

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Sabellaria alveolata is a gregarious polychaete that uses sand particles to build three-dimensional structures known as reefs, fixed atop rocks or built on soft sediments. These structures are known to modify the local grain-size distribution and to host a highly diversified macrofauna, altered when the reef undergoes disturbances. The goal of this study was to investigate the different sedimentary and biological changes associated with the presence of a S. alveolata reef over two contrasting seasons (late winter and late summer), and how these changes were linked. Three different sediments were considered: the engineered sediment (the actual reef), the associated sediment (the soft sediment surrounding the reef structures) and a control soft sediment (i.e. no reef structures in close proximity). Univariate and multivariate comparisons of grain-size distribution, soft sediment characteristics (organic matter content, chlorophyll a, pheopigments and carbohydrate concentrations) and macrofauna were conducted between the different sediment types at both seasons and between the two seasons for each sediment type. A distance-based redundancy analyses (dbRDA) was used to investigate the link between the different environmental parameters and the macrofauna assemblages. Finally, we focused on a disturbance continuum of the engineered sediments proxied by an increase in the mud present in these sediments. The effects of a continuous and increasing disturbance on the associated fauna were investigated using pairwise beta diversity indices (Sørensen and Bray-Curtis dissimilarities and their decomposition into turnover and nestedness). Results showed a significant effect of the reef on the local sediment distribution (coarser sediments compared to the control) and on the benthic primary production (higher in the associated sediments). At both seasons, S. alveolata biomass and sediment principal mode were the environmental parameters which best differentiated the engineered, associated and control sediment assemblages. These two parameters are under the ecosystem engineer's influence stressing its importance in structuring benthic macrofauna. Furthermore, in late summer but not in late winter, presence/absence and abundance based beta diversity were positively correlated to our disturbance proxy (mud content) a tendency driven by a species replacement and a rise in the associated fauna density. Our first set of results highlight the importance of S. alveolata reefs as benthic primary production enhancers via their physical structure and their biological activity. The results Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site. obtained using beta diversity indices emphasize the importance of recruitment in structuring the reef's macrofauna andparadoxicallythe ecological value of S. alveolata degraded forms as biodiversity and recruitment promoters.

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Section: Engineered Structures Cause Grain-size Distribution Changesmentioning

confidence: 99%

Interplay between abiotic factors and species assemblages mediated by the ecosystem engineer Sabellaria alveolata (Annelida: Polychaeta)

Jones

Dubois

Desroy

et al. 2018

Estuarine, Coastal and Shelf Science

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“…) and the crab Pachycheles laevidactylus , the mytilid Brachidontes rodriguezii , the endolithic sipunculid Themiste petricola , the worm Sabellaria nanella and the bryozoan species that typically inhabit the rocky bottoms of small hard microsubstrates (Bremec et al . ).…”

Section: Discussionmentioning

confidence: 97%

“…The massive and sporadic presence of other nonresident species in the surf zone may be due to storms coming from the southeast and southwest that generate large waves, strong winds (above 80 km h À1 ) and a higher water level (Cal o et al 2005), and result in the arrival of organisms from adjacent areas that remain temporarily in the surf zone. This is the case of the sea slug Pleurobranchaea inconspicua and ovicapsules of the gastropod Adelomelon brasiliana, typical species of the subtidal zone (Marcus & Marcus 1969;Luzzatto 2006;Muniain et al 2007) and the crab Pachycheles laevidactylus, the mytilid Brachidontes rodriguezii, the endolithic sipunculid Themiste petricola, the worm Sabellaria nanella and the bryozoan species that typically inhabit the rocky bottoms of small hard microsubstrates (Bremec et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Macrobenthic surf zone communities of temperate sandy beaches: spatial and temporal patterns

2014

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The spatial and temporal patterns within the surf zone epibenthic assemblages were studied in a coastal fringe of Argentina to determine whether assemblage compositions, abundance, species richness and diversity vary spatially and temporarily. Sampling was conducted seasonally in two sandy beaches over 2 years with a benthic sledge used to collect the fauna in the upper centimeters of soft bottom sediments and the epifauna on the sediment surface. Physical variables were measured in the same coastal sites where biological sampling was conducted. A total of 58 morphospecies were collected. Peracarid crustaceans were the most abundant group. The mysid Pseudobranchiomysis arenae (new genus–new species) (29.73 ± 17.79 ind. per sample) and the isopod Leptoserolis bonaerensis (51.54 ± 22.35 ind. per sample) were the most abundant and common species and were present regularly throughout the sampling period. Differences in the surf zone community composition were found between the beaches; these differences could be related to variation in physical parameters such as sand grain size and wave climate, indicating the possible influence of the morphodynamic state of the beaches on the epibenthic assemblages. A seasonal abundance trend was detected, reflecting the changes in abundance of the two dominant species; the richness pattern was not easily detectable due to the sporadic appearance of non‐resident species in the surf zone, probably due to different causes, including dispersion by entry of water from surrounding areas, littoral currents and storms. The surf zone studied presents a complex and dynamic epibenthic community that appears to be influenced by the morphodynamic state of the beach and the dynamic of non‐resident species.

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“…Moreover, zonation preferences can lead to local niche partitioning. For example, the majority of S. nanella records come from subtidal areas, although recently some records have been noted in the intertidal (Bremec et al , 2014), while the majority of P. caudata and P. virgini records are from the intertidal. Niche overlap between species has been described to WRs such as between N. cementarium and I. ornamentatus (Posey et al , 1984) and Sabellaria alveolata and S. spinulosa (Holt et al ., 1997).…”

Section: Discussionmentioning

confidence: 99%

“…In temperate and tropical coastal areas around the world, some species of sabellariids build so-called worm reefs (WRs) (Zamorano et al ., 1995; Dubois et al ., 2002; Bremec et al ., 2014; Faroni-Perez, 2014; Firth et al ., 2015; Nishi et al ., 2015; Faroni-Perez et al , 2016), which are important biogenic structures, following hermatypic corals and stromatolites (Goldberg, 2013). WRs represent habitats of high biodiversity on which hundreds of species of invertebrates and fishes rely for feeding, nursery, refuge and migration (Gherardi & Cassidy, 1994; Dubois et al ., 2002; Ataide et al ., 2014).…”

Section: Introductionmentioning

confidence: 99%

Climate and environmental changes driving idiosyncratic shifts in the distribution of tropical and temperate worm reefs

Faroni-Perez

2017

J. Mar. Biol. Ass.

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An increasing number of studies have forecast the potential responses of marine life to future climate change. This study predicts how the distributional range of temperate and tropical worm reefs (WRs) might respond to climate and environmental changes (CECs). Compared with current distributions, the tested hypotheses were: (i) under a low CO2 concentration and active atmospheric carbon capturing scenario (RCP2.6), both tropical and temperate WRs will maintain their current distributions and face only slight multi-directional biogeographic changes along the century; and (ii) under a high CO2 concentration scenario (RCP8.5) WRs will shift toward higher latitudes, with marked changes for tropical species and slight changes for temperate species, specifically at the end of the 21st century. The hypotheses were tested using species distribution modelling, and exploratory statistical analyses were performed to tune model settings. Under scenario RCP2.6, in the middle of the century, areas of suitable habitat are predicted to slightly increase for the temperate WRs and conversely contract for tropical WRs. At the end of the century, multi-directional shifts without range retraction were predicted for both species, but tropical WRs showed major changes in their distribution. Under scenario RCP8.5 and throughout the century, multi-directional shifts increased the areas of suitable habitat for temperate WRs, whereas tropical WRs experienced shifts toward high latitudes and significant retraction at low latitudes. Results indicate that biogeographic range shifts are idiosyncratic for temperate and tropical WRs depending on the CECs scenarios considered.

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Sabellaria nanella(Sabellariidae): from solitary subtidal to intertidal reef-building worm at Monte Hermoso, Argentina (39°S, south-west Atlantic)

Cited by 7 publications

References 19 publications

Interplay between abiotic factors and species assemblages mediated by the ecosystem engineer Sabellaria alveolata (Annelida: Polychaeta)

Interplay between abiotic factors and species assemblages mediated by the ecosystem engineer Sabellaria alveolata (Annelida: Polychaeta)

Macrobenthic surf zone communities of temperate sandy beaches: spatial and temporal patterns

Climate and environmental changes driving idiosyncratic shifts in the distribution of tropical and temperate worm reefs

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