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Journal articles on the topic 'Subtidal communities'

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Published: 10 December 2022

Last updated: 28 January 2023

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1

Quillien, N., M. C. Nordström, H. Le Bris, E. Bonsdorff, and J. Grall. "Green tides on inter- and subtidal sandy shores: differential impacts on infauna and flatfish." Journal of the Marine Biological Association of the United Kingdom 98, no. 4 (January 25, 2017): 699–712. http://dx.doi.org/10.1017/s0025315416002010.

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Beach ecosystems extend from dune to offshore areas along most coasts, and provide essential services that are not provided by any other ecosystem. Indeed, sandy systems contain unique biodiversity and supply nursery and foraging areas for numerous commercially important marine species, such as flatfish. However, these systems are threatened by increasing anthropogenic pressure. Green tides (GT, i.e. accumulations of green opportunistic macroalgae) are a major human-induced threat to marine ecosystems, from inshore to nearshore. This eutrophication process greatly affects both benthic invertebrate communities and flatfish communities, within sheltered and non- or microtidal systems. However, the responses of dynamic open macrotidal sandy systems to eutrophication in the form of macroalgal mats are not yet fully understood. In particular, understanding the effects of GT on two connected biological compartments (infauna and flatfish) within two connected habitats (intertidal and subtidal) is crucial. Here, we set out to assess the influence of several environmental variables, including Ulva biomass, on the variability in infauna and flatfish communities in both the intertidal and the subtidal at four sites impacted or not by GT. In total, 110 biodiversity samples were analysed with classic and novel analytical approaches. Our results demonstrate that the presence of GT specifically impacts intertidal macroinvertebrate communities. However, small effects of GT on subtidal infauna communities, as well as on species-specific flatfish at both intertidal and subtidal, were still detectable. Our findings underline the vulnerability of highly dynamic ecosystems exposed to anthropogenic stress, in particular intertidal sandy shores.

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2

Farrant, P. A., and R. J. King. "The Subtidal seaweed communities of the Sydney Region." Wetlands Australia 2, no. 1 (October 17, 2009): 51. http://dx.doi.org/10.31646/wa.59.

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3

SANDERSON, J. C., and D. P. THOMAS. "Subtidal macroalgal communities in the D'Entrecasteaux Channel, Tasmania." Austral Ecology 12, no. 1 (March 1987): 41–51. http://dx.doi.org/10.1111/j.1442-9993.1987.tb00926.x.

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4

Adkins, Merritt E., Colin A. Simpfendorfer, and Andrew J. Tobin. "Large tropical fishes and their use of the nearshore littoral, intertidal and subtidal habitat mosaic." Marine and Freshwater Research 67, no. 10 (2016): 1534. http://dx.doi.org/10.1071/mf14339.

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Shallow-coastal habitats are highly productive environments supporting a diverse community of fishes. Historical research suggests these habitats primarily function to support and nurture juvenile fishes; however, contemporary research indicates large and mature fishes also utilise these habitats. Moreover, few studies have considered the continuous cross-shore nature (i.e. extending seaward) of shallow-coastal habitats consisting of conjoined littoral, intertidal and subtidal habitats. To investigate the community of large-bodied fishes (>200mm) and how they distribute themselves across a mosaic of littoral, intertidal and subtidal habitats, seasonal sampling was conducted over 1 year in north-eastern Australia. A total of 1119 individuals from 26 families and 36 species were sampled, though four families accounted for 79.1% of the total sample (Latidae, Polynemidae, Ariidae and Carcharhinidae). The littoral and subtidal communities differed significantly from each other, whereas the intertidal community shared some species-specific characteristics with both adjacent fish communities. Teleosts were the dominant group in the littoral and intertidal habitats, whereas sharks dominated the subtidal. These patterns are likely driven by a combination of biological and ecological processes; however, further research is necessary to better understand the role of these processes on shaping the large-bodied fish communities of shallow-coastal waters.

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5

Pagola-Carte, S., and J. I. Saiz-Salinas. "A pilot study for monitoring the zoobenthic communities on the rocky shores of Abra de Bilbao (northern Spain)." Journal of the Marine Biological Association of the United Kingdom 80, no. 3 (June 2000): 395–406. http://dx.doi.org/10.1017/s0025315400002095.

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Biomass measurements (AFDW) of both subtidal and intertidal macrofauna of the ‘Abra de Bilbao’ embayment were used within a pilot study in a four step strategy of analysis, which consisted of: (1) representing communities; (2) discriminating sites or conditions; (3) determining levels of ‘stress’; and (4) linking to environmental variables. Univariate (number of species, diversity indices) as well as multivariate (clustering, MDS, SIMPER, BIO-ENV) techniques from the PRIMER package were employed. Several data aggregation levels were proposed in the analyses with the aim of selecting cost-effective procedures. The results suggested a good integration of environmental conditions by subtidal samples, which were close to constant on all different taxonomic aggregation levels. The abiotic parameter which best ‘explained’ the biotic pattern of subtidal samples in the investigated area was turbidity measured as total suspension solids and nephelometric units on the water surface. In conclusion, we recommend monitoring rocky substrates by using more extensive biomass sampling surveys of subtidal areas followed by a less time-consuming treatment of the samples (identification by high taxonomic categories or by trophic groups).

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6

Olsgard, F. "Do toxic algal blooms affect subtidal soft-bottom communities?" Marine Ecology Progress Series 95 (1993): 269–86. http://dx.doi.org/10.3354/meps095269.

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7

Olsgard, F. "Do toxic algal blooms affect subtidal soft-bottom communities?" Marine Ecology Progress Series 102 (1993): 269–86. http://dx.doi.org/10.3354/meps102269.

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8

Van Der Velde, J. T., and R. J. King. "The Subtidal seaweed communities of Bare Island, Botany Bay." Wetlands Australia 4, no. 1 (January 6, 2010): 7. http://dx.doi.org/10.31646/wa.80.

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9

Skein, Lisa, Mhairi Alexander, and Tamara Robinson. "Contrasting invasion patterns in intertidal and subtidal mussel communities." African Zoology 53, no. 1 (April 20, 2018): 47–52. http://dx.doi.org/10.1080/15627020.2018.1448720.

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10

Bennett, Scott, Thomas Wernberg, Thibaut de Bettignies, Gary A. Kendrick, Robert J. Anderson, John J. Bolton, Kirsten L. Rodgers, et al. "Canopy interactions and physical stress gradients in subtidal communities." Ecology Letters 18, no. 7 (May 14, 2015): 677–86. http://dx.doi.org/10.1111/ele.12446.

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11

Tytlyanov, Eduard A., Tamara V. Titlyanova, Hui Huang, and Xiubao Li. "Seasonal changes in benthic algal communities of the upper subtidal zone in Sanya Bay (Hainan Island, China)." Journal of the Marine Biological Association of the United Kingdom 94, no. 1 (September 4, 2013): 51–64. http://dx.doi.org/10.1017/s0025315413001112.

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A floristic study of the marine plants and algae at Luhuitou reef, Sanya Bay, Hainan Island, China, was conducted during the rainy (October 2008 and November 2010) and dry seasons (April 2009 and February 2012). Specimens were collected in the upper subtidal zone (from 0.5 to 3 m depth at low tide). A total of 156 taxa were collected, including 143 macrophyte species (90%), 12 blue–green algal species (10%), and the seagrass, Thalassia hemprichii. The most diverse group was the Rhodophyta (79 taxa or 55%), followed by the Chlorophyta (38 taxa or 25%) and then the Phaeophyceae (26 taxa or 20%). In the upper subtidal zone, macroalgae formed two types of communities: polydominant communities of turf-forming algae and monodominant and bidominant communities of foliose or fleshy algae. Seasonal changes occurred in the dominant species, which appear to be caused by periodic annual events of thalli detachment and subsequent community succession. In spite of heavy pollution from dissolved inorganic nitrogen and phosphorus in Sanya Bay, the subtidal flora has not undergone any dramatic changes in species numbers or composition and is similar to that of unpolluted regions in the Indo-Pacific.

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12

Elías, RODOLFO, and MARÍA SILVIA RIVERO. "Two new species of Cirratulidae (Annelida: Polychaeta) from Mar del Plata, Argentina (SW Atlantic)." Zoosymposia 2, no. 1 (August 31, 2009): 139–48. http://dx.doi.org/10.11646/zoosymposia.2.1.12.

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Cirratulidae from Mar del Plata (38ºS, 57ºW) are under revision. The city has an intertidal outfall, and several polychaetes are associated with both intertidal and subtidal communities in organically enriched areas. The present paper provides the first records of the cirratulid genera Protocirrineris and Aphelochaeta from Argentine waters: P. angelicollatio sp. nov. from intertidal areas and A. malefica sp. nov. from shallow subtidal areas. Living specimens of P. angelicollatio sp. nov. were observed and asexual reproduction and high regeneration rates have been observed.

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13

Maughan, Ben C., and David K. A. Barnes. "Seasonality of Competition in Early Development of Subtidal Encrusting Communities." Marine Ecology 21, no. 3-4 (December 2000): 205–20. http://dx.doi.org/10.1046/j.1439-0485.2000.00703.x.

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14

Koutsoukos, Victor de Souza, Roberto Campos Villaça, and Maria Teresa Menezes de Széchy. "THE STRUCTURE OF SUBTIDAL MACROALGAL ASSEMBLAGES AT THE TAMOIOS ECOLOGICAL STATION, A THREATENED CONSERVATION UNIT IN RIO DE JANEIRO, BRAZIL." Brazilian Journal of Oceanography 63, no. 1 (March 2015): 71–82. http://dx.doi.org/10.1590/s1679-87592015082606301.

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The structure of subtidal rocky bottom communities at Tamoios Ecological Station (TES), situated in Ilha Grande Bay, Rio de Janeiro State, as well as in other Brazilian marine protected areas, is insufficiently characterized. The present study describes the macroalgal assemblages of shallow subtidal rocky bottoms on two islands of the TES-Imboassica (IM) and Búzios Pequena (BP)adopting species and genera as observational units. Two sites were surveyed on each island in summer 2011. Random 30x30 cm quadrats (n=3) were scraped to collect all macroalgae except crustose species. The subtidal assemblages, in which 58 macroalgal species occurred, were characterized by the high frequency and percent cover of Sargassum vulgare C. Agardh (56.8±8.4%). The sites differed significantly in total number of species and Shannon-Weiner diversity index (PERMANOVA, p<0.05). According to SIMPER, the macroalgal genera that most contributed to the dissimilarities of cover between the sites (contribution >5%) were Sargassum, Laurencia, Wrangelia, Canistrocarpus, Asparagopsis, Hypnea, Ceratodictyon, Gayliella, Spyridia and Chondria.Dissimilarities within and between the islands, as shown by nMDS of the cover data, suggest that different spatial scales should be considered in monitoring the rocky bottom communities of Ilha Grande Bay.

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15

Pacheco, Aldo S., Jürgen Laudien, Martin Thiel, Olaf Heilmayer, and Marcelo Oliva. "Hard-bottom succession of subtidal epibenthic communities colonizing hidden and exposed surfaces off northern Chile." Scientia Marina 74, no. 1 (December 1, 2009): 147–54. http://dx.doi.org/10.3989/scimar.2010.74n1147.

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16

Westrop, Stephen R., and Jonathan M. Adrain. "Trilobite alpha diversity and the reorganization of Ordovician benthic marine communities." Paleobiology 24, no. 1 (1998): 1–16. http://dx.doi.org/10.1017/s009483730001993x.

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The Ordovician saw the transformation of marine benthic communities from the trilobite-based Cambrian Fauna to the brachiopod-dominated Paleozoic Fauna. An evaluation of the changing importance of trilobites during the Ordovician can be made from accurate assessments of taxonomic richness in various habitats. Here we present a new compilation of trilobite alpha diversity based on field collections and survey of the literature. The data indicate that trilobite species richness within nearshore, shallow subtidal, carbonate buildup and deep subtidal shelf environments was essentially constant between the Late Cambrian and the Late Ordovician. The alpha diversity patterns do not support the notion that trilobites became displaced from inner shelf environments during the Ordovician. Rather, the data are consistent with a decline in relative importance of the group through dilution as newly radiating invertebrate groups entered Ordovician paleocommunities. They also imply that direct interactions between elements of the Cambrian and Paleozoic faunas were not involved in the Ordovician reorganization of paleocommunities. Like many other major faunal transitions during the Phanerozoic, the Ordovician radiations appear to have been essentially non-competitive in nature.

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17

Dixon, Olivia, Johanna Gammal, Dana Clark, Joanne I. Ellis, and Conrad A. Pilditch. "Estimating Effects of Sea Level Rise on Benthic Biodiversity and Ecosystem Functioning in a Large Meso-Tidal Coastal Lagoon." Biology 12, no. 1 (January 10, 2023): 105. http://dx.doi.org/10.3390/biology12010105.

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Estuaries are among the world’s most productive ecosystems, but due to their geographic location, they are at the forefront of anthropogenic pressures. Sea level rise (SLR) is one major consequence of climate change that poses a threat to estuaries with extensive intertidal habitats. The ecological implications of intertidal habitat loss have been largely overlooked despite their likely significance. We aimed to address this knowledge gap by investigating how benthic macroinvertebrate communities and their contributions to ecosystem function are likely to respond to SLR. Based on a spatially extensive dataset (119 sites) from a large coastal lagoon, depth, sediment chlorophyll concentrations, mud content, and average current speed were identified as the main drivers of community compositional turnover. Shifts in benthic community structure and associated functional implications were then evaluated using depth as a proxy for SLR. Three main macrofaunal groups representing intertidal, shallow subtidal, and deep subtidal habitats were identified. Functional trait analysis indicated low functional redundancy for a key intertidal suspension-feeding bivalve (Austrovenus stutchburyi) and the lack of a shallow subtidal functional replacement should intertidal habitats become inundated. These findings strongly suggest SLR and the associated environmental changes will alter estuarine macroinvertebrate communities, with implications for future ecosystem function and resilience.

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18

GRISCHENKO, ANDREI V., JI EUN SEO, and BUM SIK MIN. "Flustrellidra armata (Bryozoa: Ctenostomatida)—a new species from the southern shoreline of Korea." Zootaxa 2684, no. 1 (November 23, 2010): 25. http://dx.doi.org/10.11646/zootaxa.2684.1.3.

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Flustrellidra armata sp. nov. is described from ten intertidal and four subtidal sites along the southern coast of Korea. The new species possess a series of small lateral and occasionally proximal kenozooids with simple spines; large scattered vicarious kenozooids with long, tubular, sharp or weakly ramified spines; and a marginal fringe of spiny kenozooids. Colonies of F. armata provide a habitat for a large number of associated benthic organisms. This species is an abundant and prominent component of rocky intertidal to upper subtidal communities and is the third species of Flustrellidra with low-Boreal to Subtropical distribution.

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19

Gastaldi, Marianela, Fausto Nahuel Firstater, Pedro Daleo, and Maite Andrea Narvarte. "Abundance of the sponge Hymeniacidon cf. perlevis in a stressful environment of Patagonia: relationships with Ulva lactuca and physical variables." Journal of the Marine Biological Association of the United Kingdom 96, no. 2 (August 11, 2015): 465–72. http://dx.doi.org/10.1017/s0025315415001198.

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Understanding the variables (biotic or abiotic) controlling coastal communities is the main goal of ecology research and it is crucial to predict how communities will evolve under the increasing pressure on coastal systems by human activities. The general aims of this study were to assess the variables affecting the distribution of the fast-growing sponge Hymeniacidon cf. perlevis, and to evaluate if physical stressful conditions have an influence in the relationship between Hymeniacidon and the sea lettuce Ulva lactuca. Specifically, the aims were to evaluate the abundance patterns of Hymeniacidon and Ulva and to assess the relationship of Ulva and physical variables on the abundance of Hymeniacidon at both intertidal and subtidal. Hymeniacidon and Ulva showed opposite abundance patterns. Hymeniacidon was more abundant in sites without Ulva, and negatively correlated with Ulva abundance at both heights. Intertidal Hymeniacidon abundance was not correlated with physical variables, but subtidal Hymeniacidon was.

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20

Voerman, Sofie E., Eva Llera, and José M. Rico. "Climate driven changes in subtidal kelp forest communities in NW Spain." Marine Environmental Research 90 (September 2013): 119–27. http://dx.doi.org/10.1016/j.marenvres.2013.06.006.

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21

Dean, Thomas A., and Stephen C. Jewett. "HABITAT-SPECIFIC RECOVERY OF SHALLOW SUBTIDAL COMMUNITIES FOLLOWING THEEXXON VALDEZOIL SPILL." Ecological Applications 11, no. 5 (October 2001): 1456–71. http://dx.doi.org/10.1890/1051-0761(2001)011[1456:hsross]2.0.co;2.

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22

Mavromatis, Charalampos, Sandra Binning, and Frédéric Guichard. "Successional Dynamics in Seagrass Communities." McGill Science Undergraduate Research Journal 1, no. 1 (April 30, 2006): 27–29. http://dx.doi.org/10.26443/msurj.v1i1.154.

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The sequence of ecological changes in which one species is replaced by another is known as succession. Den Hartog (1971) was the first to propose successional schemes for seagrass communities based on competition-colonization hierarchies, which have rarely been challenged. Wave-disturbed subtidal systems are characterized by the presence of gaps, the distinct topographic depressions devoid of vegetation defined. We present a study of a Caribbean seagrass bed exemplifying macroalgal-seagrass succession dynamics in relation to gap disturbance. We report a shift in species composition at the study site consisting of the replacement of seagrass by an extensive macroalgal cover. Succession patterns were tested in each zone by sampling macrophyte cover along transects running across gaps. Our results show that seagrass is always the first colonizer, independent of dominant cover in control plots. The reversal of competitive hierarchy described has important consequences for the understanding and management of seagrass ecosystems.

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23

Weigel, Brooke L., and Patrick M. Erwin. "Intraspecific Variation in Microbial Symbiont Communities of the Sun Sponge, Hymeniacidon heliophila, from Intertidal and Subtidal Habitats." Applied and Environmental Microbiology 82, no. 2 (November 13, 2015): 650–58. http://dx.doi.org/10.1128/aem.02980-15.

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ABSTRACTSponges host diverse and complex communities of microbial symbionts that display a high degree of host specificity. The microbiomes of conspecific sponges are relatively constant, even across distant locations, yet few studies have directly examined the influence of abiotic factors on intraspecific variation in sponge microbial community structure. The contrast between intertidal and subtidal environments is an ideal system to assess the effect of environmental variation on sponge-microbe symbioses, producing two drastically different environments on a small spatial scale. Here, we characterized the microbial communities of individual intertidal and subtidalHymeniacidonheliophilasponges, ambient seawater, and sediment from a North Carolina oyster reef habitat by partial (Illumina sequencing) and nearly full-length (clone libraries) 16S rRNA gene sequence analyses. Clone library sequences were compared toH. heliophilasymbiont communities from the Gulf of Mexico and Brazil, revealing strong host specificity of dominant symbiont taxa across expansive geographic distances. Sediment and seawater samples yielded clearly distinct microbial communities from those found inH. heliophila. Despite the close proximity of the sponges sampled, significant differences between subtidal and intertidal sponges in the diversity, structure, and composition of their microbial communities were detected. Differences were driven by changes in the relative abundance of a few dominant microbial symbiont taxa, as well as the presence or absence of numerous rare microbial taxa. These findings suggest that extreme abiotic fluctuations, such as periodic air exposure in intertidal habitats, can drive intraspecific differences in complex host-microbe symbioses.

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24

Monterroso, Oscar, Rodrigo Riera, and Jorge Núñez. "Subtidal soft-bottom macroinvertebrate communities of the Canary Islands. An ecological approach." Brazilian Journal of Oceanography 60, no. 1 (March 2012): 1–9. http://dx.doi.org/10.1590/s1679-87592012000100001.

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The Canarian archipelago is characterized by a mosaic of soft-bottoms such as Cymodocea nodosa meadows, Caulerpa spp. meadows, mäerl bottoms, sabellid fields and bare sandy seabeds, including various macroinfaunal communities. Vegetated habitats (e.g. Cymodocea and Caulerpa) maintain more diverse communities than the non-vegetated seabeds. The results indicated that Caulerpa meadows and, to a lesser extent, Cymodocea nodosa and sabellid fields are the richest and most diverse ecosystems in the study area. Moreover, biodiversity differences among islands could be detected with maximum values on the eastern islands (Lanzarote and Gran Canaria) and lowest values on the western ones (La Palma).

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25

Zuschin, Martin, Rafał Nawrot, Mathias Harzhauser, Oleg Mandic, and Adam Tomašových. "Taxonomic and numerical sufficiency in depth- and salinity-controlled marine paleocommunities." Paleobiology 43, no. 3 (March 9, 2017): 463–78. http://dx.doi.org/10.1017/pab.2016.49.

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AbstractNumerical and taxonomic resolution of compositional data sets affects investigators’ abilities to detect and measure relationships between communities and environmental factors. We test whether varying numerical (untransformed, square-root- and fourth-root-transformed relative abundance and presence–absence data) and taxonomic (species, genera, families) resolutions reveals different insights into early to middle Miocene molluscan communities along bathymetric and salinity gradients. The marine subtidal has a more even species-abundance distribution, a higher number of rare species, and higher species:family and species:genus ratios than the three habitats—marine and estuarine intertidal, estuarine subtidal—with higher fluctuations in salinity and other physical parameters. Taxonomic aggregation and numerical transformation of data result in very different ordinations, although all habitats differ significantly from one another at all taxonomic and numerical levels. Rank correlations between species-level and higher-taxon, among-sample dissimilarities are very high for proportional abundance and decrease strongly with increasing numerical transformation, most notably in the two intertidal habitats. The proportion of variation explained by depth is highest for family-level data, decreases gradually with numerical transformation, and is higher in marine than in estuarine habitats. The proportion of variation explained by salinity is highest for species-level data, increases gradually with numerical transformation, and is higher in subtidal than in intertidal habitats. Therefore, there is no single best numerical and taxonomic resolution for the discrimination of communities along environmental gradients: the “best” resolution depends on the environmental factor considered and the nature of community response to it. Different numerical and taxonomic transformations capture unique aspects of metacommunity assembly along environmental gradients that are not detectable at a single level of resolution. We suggest that simultaneous analyses of community gradients at multiple taxonomic and numerical resolutions provide novel insights into processes responsible for spatial and temporal community stability.

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Nalesso, Rosebel C., Jean-Christophe Joyeux, Cintia O. Quintana, Evelise Torezani, and Ana Clara Paz Otegui. "Soft-Bottom macrobenthic communities of the Vitória Bay estuarine system, South-eastern Brazil." Brazilian Journal of Oceanography 53, no. 1-2 (June 2005): 23–38. http://dx.doi.org/10.1590/s1679-87592005000100003.

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The present work describes and analyses the structure of the macrobenthic epi- and infaunal assemblage of the estuarine system of Vitória Bay, South-eastern Brazil, from January 1998 to June 1999. Replicated sampling at intertidal and subtidal levels was conducted quarterly at ten stations. Intertidal and subtidal sediment composition was characterised. Water physico-chemical parameters were measured in situ. A total of 10,695 individuals, belonging to 144 taxa, were collected. Molluscs, crustaceans and polychaetes were the most abundant groups. The bivalves Anomalocardia brasiliana, Mytella guyanensis and M. falcata were the most abundant species. Locally, significant discharges of residential and industrial wastewater resulted in high organic content in the sediment (up to 30%) and low dissolved oxygen concentration in the water (< 1mg.l-1). Near the two entrances of the bay, high hydrodynamic activity and coarse sand reduced the detrimental effects of raw and treated sewage inputs. Species richness (S), diversity (H') and total abundance (A) decreased from outer-bay stations (22 < S < 72; 1.99 < H' < 2.85; 320 < A < 1737) towards inner-bay stations (2 < S < 45; 0.59 < H' < 2.67; 2 < A < 1317), where salinity and dissolved oxygen were lowest and organic matter content highest.

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27

Wallenstein, Francisco F. M. M., Ana I. Neto, Nuno V. Álvaro, and Ian Tittley. "Subtidal Rocky Shore Communities of the Azores: Developing a Biotope Survey Method." Journal of Coastal Research 1 (January 2008): 244–49. http://dx.doi.org/10.2112/05-0590.1.

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28

Lumingas, Aaron R. T., Farnis B. Boneka, Medy Ompi, Noldy G. F. Mamangkey, Indri S. Manembu, Suzanne L. Undap, and Lawrence J. L. Lumingas. "Polychaeta Communities in Subtidal Zone Soft Substrate of Manado Bay, North Sulawesi." Jurnal Ilmiah PLATAX 10, no. 1 (April 15, 2022): 168. http://dx.doi.org/10.35800/jip.v10i1.39518.

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This study aims to analyze the structure of the Polychaeta community on the soft substrate of the subtidal zone in Manado Bay. Samples were taken by grab at 3 stations namely ST1 located at a depth of 8 m with black mud substrate; ST2 is located at a depth of 26 m with blackish sand substrate, and ST3 are located at a depth of 18 m with blackish sand as a substrate. From the three sampling stations, 27 species of 253 Polychaeta individuals were identified. Station 1, which is located near the mouth of the Bailang River, has high individual abundance but low species diversity. Station 2, which is located near the Megamas area, has moderate individual abundance but high species richness. Station 3, which is located around the Faculty of Medicine, Unsrat Malalayang, has low individual abundance but high species richness. Substrate types and anthropogenic disturbances such as enrichment of organic matter are thought to be determinants of individual abundance, composition, and species richness of Polychaeta in Manado Bay.Keywords: Polychaeta; biodiversity; soft substrate; Manado BayAbstrak Penelitian ini bertujuan untuk menganalisis struktur komunitas Polychaeta pada substrat lunak zona subtidal di Teluk Manado. Sampel diambil dengan grab pada 3 stasiun yakni ST1 terletak pada kedalaman 8 m dengan substrat lumpur berwarna hitam; ST2 terletak pada kedalaman 26 m dengan substrat pasir berwarna kehitaman; dan ST3 terletak pada kedalaman 18 m dengan substrat pasir berwarna kehitaman. Dari tiga stasiun sampling tersebut berhasil diidentifikasi 27 spesies dari 253 individu Polychaeta. Stasiun 1 yang terletak dekat muara Sungai Bailang memiliki kelimpahan individu tinggi tetapi keanekaragaman spesies rendah. Stasiun 2 yang terletak dekat kawasan Megamas memiliki kelimpahan individu sedang tetapi kekayaan spesies tinggi. Stasiun 3 yang terletak di sekitar pemukiman belakang Fakultas Kedokteran Unsrat Malalayang memiliki kelimpahan individu rendah tetapi kekayaan spesies tinggi. Jenis substrat dan gangguan antropogenik seperti pengayaan bahan organik diduga merupakan faktor penentu kelimpahan individu, komposisi dan kekayaan spesies Polychaeta di Teluk Manado. Kata Kunci: Polychaeta; keanekaragaman hayati; substrat lunak; Teluk Manado

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29

KUK DZUL, José Gabriel, Jesús Guadalupe PADILLA SERRATO, Carmina TORREBLANCA RAMÍREZ, Rafael FLORES GARZA, Pedro FLORES RODRÍGUEZ, and Ximena Itzamara MUÑIZ SÁNCHEZ. "Structure of molluscan communities in shallow subtidal rocky bottoms of Acapulco, Mexico." TURKISH JOURNAL OF ZOOLOGY 43, no. 5 (September 2, 2019): 465–79. http://dx.doi.org/10.3906/zoo-1810-2.

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Yang, Mei, Xinzheng Li, Yong Xu, Hongfa Wang, and Baolin Zhang. "Seasonal variations in macrobenthic communities in the subtidal zones of Jiaozhou Bay." Biodiversity Science 24, no. 7 (2016): 820–30. http://dx.doi.org/10.17520/biods.2015264.

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Mantelatto, Marcelo Checoli, Igor Cristino Silva Cruz, and Joel Christopher Creed. "A review of the knowledge of shallow subtidal benthic communities in Brazil." Marine Environmental Research 140 (September 2018): 69–77. http://dx.doi.org/10.1016/j.marenvres.2018.05.022.

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Hollander, Johan, Johan Blomfeldt, Per Carlsson, and Åsa Strand. "Effects of the alien Pacific oyster (Crassostrea gigas) on subtidal macrozoobenthos communities." Marine Biology 162, no. 3 (January 7, 2015): 547–55. http://dx.doi.org/10.1007/s00227-014-2604-6.

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33

Neto, Ana. "Macroalgal species diversity and biomass of subtidal communities of São Miguel (Azores)." Helgoland Marine Research 55, no. 2 (July 1, 2001): 101–11. http://dx.doi.org/10.1007/s101520100074.

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Bell, Sahira Y., Matthew W. Fraser, John Statton, and Gary A. Kendrick. "Salinity stress drives herbivory rates and selective grazing in subtidal seagrass communities." PLOS ONE 14, no. 3 (March 21, 2019): e0214308. http://dx.doi.org/10.1371/journal.pone.0214308.

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Sandulli, R., C. De Leonardis, and J. Vanaverbeke. "Meiobenthic communities in the shallow subtidal of three Italian Marine Protected Areas." Italian Journal of Zoology 77, no. 2 (June 3, 2010): 186–96. http://dx.doi.org/10.1080/11250000903476616.

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36

van der Wal, Daphne, Gwladys I. Lambert, Tom Ysebaert, Yves M. G. Plancke, and Peter M. J. Herman. "Hydrodynamic conditioning of diversity and functional traits in subtidal estuarine macrozoobenthic communities." Estuarine, Coastal and Shelf Science 197 (October 2017): 80–92. http://dx.doi.org/10.1016/j.ecss.2017.08.012.

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37

Lee, Kyeong-Tae, Hye-Mi Lee, Thatchaneshkanth Subramaniam, Hyun-Sung Yang, Sang Rul Park, Chang-Keun Kang, Shashank Keshavmurthy, and Kwang-Sik Choi. "Dominance of the scleractinian coral Alveopora japonica in the barren subtidal hard bottom of high-latitude Jeju Island off the south coast of Korea assessed by high-resolution underwater images." PLOS ONE 17, no. 11 (November 4, 2022): e0275244. http://dx.doi.org/10.1371/journal.pone.0275244.

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Coastal benthic communities in temperate regions have been influenced by climate change, including increasing sea-surface temperature. Nevertheless, scleractinian coral Alveopora japonica Eguchi, 1968, is thriving in shallow subtidal hard bottoms around Jeju Island, off the southern coast of Korea. The presence of this corals has negatively impacted subtidal kelp populations in Jeju Island. However, there is no study to document how the presence or absence of this coral relates to other benthic communities. This study investigated the benthos in three shallow subtidal sites (Shinheung (SH), Bukchon (BC), and Seongsan (SS)) in northern Jeju using underwater photography. Macro-benthic organisms appearing on a 1 × 20 m line transect installed at depths of 5, 10, and 15 m at each site were analyzed. Results showed that of the three sites investigated, A. japonica colonies were most abundant at BC, accounting for 45.9% and 72.8% of the total transect area at 10 m and 15 m, respectively. At SS, A. japonica occupied 15.3% of the total area at 15 m and less than 1% at 5 m and 10 m. The same at SH accounted for 10% of the total area at 5 m, and less than 1% at 10 m and 15 m. Dead and bleached colonies accounted for 1.2–11.5% and 1.8–5.7%, respectively, at 5, 10, and 15 m at three sites. At SS, canopy-forming brown algae Ecklonia cava and Sargassum spp. accounted for 20.2 and 24.3% of the total transect area, respectively, at 5 m depth. In contrast, the percent cover of E. cava and Sargassum spp. at SH and BC ranged from 0.1 to 1.8%, respectively. Moreover, non-geniculate coralline algae dominated the subtidal substrate at SH, ranging between 60.2 and 69% at 15 and 10 m. The low cover of A. japonica in SS (at 5 m) coincided with a high percent cover of canopy-forming brown algae. However, canopy-forming brown algae were rare at all depths at SH and BC and were dominated instead by coralline algae and the scleractinian corals. This study, by utilizing a non-destructive method, provides a baseline qualitative and quantitative information for understanding the site and depth-dependent distribution of A. japonica and algal populations, which is important to understand climate change related changes in benthic communities in Jeju and elsewhere.

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Lim, Swee-Cheng, Nicole J. de Voogd, and Koh-Siang Tan. "Biodiversity of shallow-water sponges (Porifera) in Singapore and description of a new species of Forcepia (Poecilosclerida: Coelosphaeridae." Contributions to Zoology 81, no. 1 (January 31, 2012): 55–71. http://dx.doi.org/10.1163/18759866-08101004.

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A surprisingly high number of shallow water sponge species (197) were recorded from extensive sampling of natural intertidal and subtidal habitats in Singapore (Southeast Asia) from May 2003 to June 2010. This is in spite of a highly modified coastline that encompasses one of the world’s largest container ports as well as extensive oil refining and bunkering industries. A total of 99 intertidal species was recorded in this study. Of these, 53 species were recorded exclusively from the intertidal zone and only 45 species were found on both intertidal and subtidal habitats, suggesting that tropical intertidal and subtidal sponge assemblages are different and distinct. Furthermore, only a third of the fouling species of sponges from a previous study was recorded in this study, thus suggesting that sponge assemblages from natural and fouling communities in the tropics are different as well. A new species, Forcepia (Forcepia) vansoesti is described from Singapore. Members of this genus possess unique spicules shaped in the form of a pair of forceps. The new species is distinguished from its congeners in having the largest forceps (nearly 300 μm in length) so far recorded in the Indo-Pacific.

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39

Jewett, S. C., and G. S. Drew. "Recolonization of the intertidal and shallow subtidal community following the 2008 eruption of Alaska's Kasatochi Volcano." Biogeosciences Discussions 11, no. 3 (March 7, 2014): 3799–836. http://dx.doi.org/10.5194/bgd-11-3799-2014.

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Abstract. The intertidal and nearshore benthic communities of Kasatochi Island are described following a catastrophic volcanic eruption in 2008. Prior to the eruption, the island was surrounded by a dense bed of canopy-forming dragon kelp Eualaria fistulosa which supported a productive nearshore community. The eruption extended the coastline of the island approximately 400 m offshore to roughly the 20 m isobath. One year following the eruption a reconnaissance survey found the intertidal zone devoid of life. Subtidally, the canopy kelp, as well as limited understory algal species and associated benthic fauna on the hard substratum, were buried by debris from the eruption. The resulting substrate was comprised almost entirely of medium and coarse sands with a depauperate benthic community. Comparisons of habitat and biological communities with other nearby Aleutian Islands and the Icelandic submarine volcanic eruption of Surtsey confirm dramatic reductions in flora and fauna consistent with the initial stages of recovery from a large-scale disturbance event. Four and five years following the eruption brief visits revealed dramatic intertidal and subtidal recolonization of the flora and fauna in some areas. Signs of nesting and fledging of young pigeon guillemots Cepphus columba suggest that the recovery of the nearshore biota may have begun affecting higher trophic levels. Recolonization or lack thereof was tied to bathymetric changes from coastal and nearshore erosion over the study period.

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Burrows, MT. "Influences of wave fetch, tidal flow and ocean colour on subtidal rocky communities." Marine Ecology Progress Series 445 (January 20, 2012): 193–207. http://dx.doi.org/10.3354/meps09422.

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41

Mulders, YR, and T. Wernberg. "Fifteen years in a global warming hotspot: changes in subtidal mobile invertebrate communities." Marine Ecology Progress Series 656 (December 10, 2020): 227–38. http://dx.doi.org/10.3354/meps13567.

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Temperate subtidal reefs are increasingly exposed to gradual warming and short periods of high temperatures (marine heatwaves; MHWs). These pressures can directly and indirectly affect the mobile invertebrate communities on these reefs. We investigate changes in mobile invertebrate communities from benthic surveys 15 yr apart (1999-2001 vs 2016-2019), spanning a 4° latitudinal gradient in Western Australia (30-34°S), expecting the biggest changes to the communities in the lower latitudes, where the cumulative effect of MHWs and warming is largest. The urchins Centrostephanus tenuispinus (warm temperate affinity) and Phyllacanthus irregularis (cool temperate affinity) showed trends toward opposite responses over time; while P. irregularis densities declined (non-significantly at all sites), C. tenuispinus densities increased (significantly at one of 3 sites). The magnitude of the responses appeared to decrease with increasing latitude, with C. tenuispinus recorded in significantly higher densities only at the lowest latitude location. Neither the densities, nor change in density over time of cool temperate gastropod Lunella torquatus and urchin Heliocidaris erythrogramma reflected a latitudinal gradient, suggesting other localized factors play a larger role in determining abundances of these species. However, size distributions of L. torquatus populations at the lower latitude locations were clearly impacted by the 2011 MHW, while those at higher latitudes remained relatively consistent. Overall, the biggest changes over time were seen at the warm edge of the temperate ecosystem. As temperatures continue to rise, the magnitude of these changes is not only expected to increase, but also to occur at higher latitudes.

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42

Rubin, Stephen P., Ian M. Miller, Melissa M. Foley, Helen D. Berry, Jeffrey J. Duda, Benjamin Hudson, Nancy E. Elder, et al. "Increased sediment load during a large-scale dam removal changes nearshore subtidal communities." PLOS ONE 12, no. 12 (December 8, 2017): e0187742. http://dx.doi.org/10.1371/journal.pone.0187742.

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43

Elahi, Robin, Charles Birkeland, Kenneth P. Sebens, Kevin R. Turner, and Timothy R. Dwyer. "Limited change in the diversity and structure of subtidal communities over four decades." Marine Biology 160, no. 12 (August 11, 2013): 3209–19. http://dx.doi.org/10.1007/s00227-013-2308-3.

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44

Moreno, Rodrigo A., Roger D. Sepúlveda, Ernesto I. Badano, Sven Thatje, Nicolás Rozbaczylo, and Franklin D. Carrasco. "Subtidal macrozoobenthos communities from northern Chile during and post El Niño 1997–1998." Helgoland Marine Research 62, S1 (November 27, 2007): 45–55. http://dx.doi.org/10.1007/s10152-007-0095-2.

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45

Azovsky, A. I., and Yu A. Mazei. "Structure of subtidal and intertidal communities of psammophilous ciliates of the Pechora Sea." Oceanology 47, no. 1 (February 2007): 60–67. http://dx.doi.org/10.1134/s0001437007010092.

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46

Cacabelos, Eva, Marta Domínguez, and Jesús S. Troncoso. "Trophic structure of soft-bottom macrobenthos in an inlet in north-western Spain." Journal of the Marine Biological Association of the United Kingdom 89, no. 3 (May 2009): 439–47. http://dx.doi.org/10.1017/s0025315409003105.

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The trophic composition of macrobenthic communities in intertidal and subtidal soft-bottoms of the Ensenada de San Simón (north-western Spain) was found to be related to a number of environmental variables. Distribution and abundance of trophic groups have been studied, to provide essential baseline information for monitoring the area, after its designation as a Natura 2000 Special Conservation Zone. Analyses of trophic data showed a numerical predominance of the herbivores in the inner part of the inlet, while sites at the oceanic-influenced area were numerically dominated by surface-deposit feeders. These dominances were mainly due to Hydrobia ulvae in the intertidal area and to polychaetes at the subtidal one. Both univariate and multivariate statistical analyses showed that the sediment composition (organic matter and silt–clay contents) and temperature of the bottom water influenced the benthic macrofauna and were correlated with their trophic composition, abundance and distribution.

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47

Moore, C. G. "Meiofauna of the industrialised estuary and Firth of Forth, Scotland." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 93, no. 3-4 (1987): 415–30. http://dx.doi.org/10.1017/s0269727000006850.

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SynopsisKnowledge concerning the meiofauna of the Forth is reviewed and extended by presentation of the results of new surveys of the intertidal and subtidal provinces of the estuary. Most of the published information concerns the influence of sewage pollution on shores of the firth. Before 1979, the meiofaunal communities of sandy beaches along the Edinburgh coastline exhibited reduced species richness, although certain taxa displayed enhanced densities. Improvements in the sewage treatment process have initiated a phase of meiofaunal recovery.In the estuary the salinity regime plays a key role in the determination of species composition, although the influence of local changes in sediment type and stability is recognised. Meiofaunal communities of lower shore mudflats in different salinity zones of the estuary are described. Pollution plays a major modifying role. In the upper reaches of the estuary, which suffer oxygen depletion in summer, only nematodes and oligochaetes were recorded in the oligohaline zone and impoverished nematode and copepod faunas in the mesohaline zone. In the polyhaline zone discharges from the industrialised region around Grangemouth modify meiofaunal community structure over an extensive area of mudflat. The subtidal meiofauna of the lower estuary is briefly described, particularly with respect to the copepods. Impoverishment again occurs in the vicinity of Grangemouth.

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48

Harriott, Vicki J., Simon A. Banks, Roland L. Mau, Darren Richardson, and Lisa G. Roberts. "Ecological and conservation significance of the subtidal rocky reef communities of northern New South Wales, Australia." Marine and Freshwater Research 50, no. 4 (1999): 299. http://dx.doi.org/10.1071/mf98042.

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The subtropical rocky reefs of Cook Island, Julian Rocks and the South West Rocks area form part of a chain of islands and reefs with significant coral cover from the Queensland border (28˚S) to the southern extent of extensive coral communities in coastal Australia (31˚S). Benthic communities at 18 subtidal sites at the three localities were surveyed quantitatively by video-transects, and coral species lists were compiled. Twenty-eight coral species previously unrecorded for these localities were identified, increasing the species richness of hermatypic corals reported for the northern NSW region (excluding the Solitary Islands) from 14 to 43. Coral species richness declined with latitude. Benthic communities were generally dominated by turfing and macroalgal species, with Pyura, sponges, and barnacles locally abundant. Scleractinian coral cover ranged from 0% to 42.6% per site, with highest coral cover at the most southern site. Julian Rocks is a designated Aquatic Reserve, and Marine Parks have been suggested for all three localities. Selection of Marine Protected Areas requires information on their ecological significance. These surveys report the first quantitative information on the shallow- water, rocky-reef communities in the region, which is a vital step in assessing their ecological significance.

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Rodrigues, Andrielle Raposo, Luís Felipe Skinner, and Ana Claudia Dos Santos Brasil. "Do Morphological Similarities and human-induced dispersal explain the non-native occurrence of Serpulidae (Annelida) in Southwest Atlantic? Taxonomic detailing is the key." Papéis Avulsos de Zoologia 60 (January 31, 2020): e20206005. http://dx.doi.org/10.11606/1807-0205/2020.60.05.

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Species of Serpulidae are common on benthic and biofouling communities, occurring attached on both natural and artificial substrates. In this paper, Serpulids were collected from intertidal to subtidal areas, on rocky shore and suspended artificial plates in port areas. Herein we report three new records of serpulid species to the coast of Rio de Janeiro, Brazil. We also discuss the misidentification of Spirobranchus tetraceros, which was previously reported to the north of Rio de Janeiro.

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Sevilgen, DS, D. de Beer, AY Al-Handal, T. Brey, and L. Polerecky. "Oxygen budgets in subtidal arctic (Kongsfjorden, Svalbard) and temperate (Helgoland, North Sea) microphytobenthic communities." Marine Ecology Progress Series 504 (May 14, 2014): 27–42. http://dx.doi.org/10.3354/meps10672.

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