Intertidal assemblages associated with naturalcorallina turf and invasive mussel beds

Chapman, M. G.; People, J.; Blockley, David J.

doi:10.1007/s10531-004-0698-8

Cited by 58 publications

(37 citation statements)

References 63 publications

(72 reference statements)

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“…Our results are in agreement with the outcomes of past studies that have documented both positive and negative responses of species to the removal of either canopy-algae or mussels (Dayton 1975, Kanter 1978, Paine & Suchanek 1983, Bertness et al 1999, Benedetti-Cecchi et al 2001, Bulleri et al 2002, Chapman et al 2005. By manipulating Cystoseira compressa and Mytilus galloprovincialis simultaneously, however, we generated complex responses in associated assemblages that likely involved a wide range of direct and indirect effects (Wootton 1994, and references therein).…”

Section: Discussionsupporting

confidence: 92%

Effects of changes in number, identity and abundance of habitat-forming species on assemblages of rocky seashores

Maggi¹,

Bertocci²,

Vaselli³

et al. 2009

Mar. Ecol. Prog. Ser.

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Understanding the relationship between variation in biodiversity and the alteration of ecosystem processes and stability has become a central ecological issue during the last decade. A large number of experimental and theoretical studies have focused on the effects of changes in species richness and identity, while the role of variation in species abundance has received less attention in biodiversity experiments. By using an experimental design that effectively separates the effects of species richness and identity, while controlling for variation in species abundance, we examined the consequences of loss of 2 habitat-forming species (the canopy alga Cystoseira compressa and the mussel Mytilus galloprovincialis) in Mediterranean low-shore assemblages of algae and invertebrates. Results revealed significant effects associated with changes in number and identity of habitatforming species on other organisms. The magnitude and direction of these effects, however, changed as a function of the abundance of manipulated species. Our findings indicate how changes in biodiversity of even 2 species can result in complex effects, stressing the importance of investigating nonrandom loss of habitat-forming species and the need to consider density-dependent effects in biodiversity experiments, particularly when experiments are undertaken in systems like rocky shores, where density-dependent effects are pervasive.KEY WORDS: Biodiversity · Habitat-forming species · Experimental design · Density-dependence · Rocky shore · Canopy algae · Mussels

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Section: Discussionsupporting

confidence: 92%

Effects of changes in number, identity and abundance of habitat-forming species on assemblages of rocky seashores

Maggi¹,

Bertocci²,

Vaselli³

et al. 2009

Mar. Ecol. Prog. Ser.

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“…Although our results clearly demonstrate a negative effect of turf structure on the recruitment of Hormosira banksii, we cannot rule out an additional influence of biological exclusion. Coralline turfs are known to support a diverse assemblage of macrofauna (Kelaher et al 2001, Kelaher 2002, Chapman et al 2005 and it may be expected that at least some species may consume macroalgal propagules. While generally 53 Mar Ecol Prog Ser 419: 47-56, 2010 fucoid algae are an unpalatable food source (Schoenwaelder 2002), the propagules and young germlings, which have lower phenolic contents and less complex cell walls (Schoenwaelder & Clayton 1998), may be more vulnerable to herbivory than are their older counterparts (Lubchenco 1983).…”

Section: Discussionmentioning

confidence: 99%

Effects of disturbance timing on community recovery in an intertidal habitat of a Korean rocky shore

Kim

Yang

et al. 2017

ALGAE

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Fucoid algae often dominate intertidal rocky shores, providing habitat and modifying ecosystem resources for other species, but are susceptible to discharge of sewage effluent. In this study we assessed the potential for competition from coralline turfs to inhibit restoration of the intertidal fucoid macroalga Hormosira banksii at sites associated with an ocean outfall a scenario of improving following water quality in the nearshore coastal environment. The percentage cover and number of individuals of H. banksii were negatively correlated with both the percentage cover and turf height of Corallina officinalis. In contrast, H. banksii was positively associated with rocky substrata and recruited well to rock-surface substrata. Importantly, there appears to be a threshold abundance where the percentage cover of H. banksii rarely reaches above 20% cover amongst coralline turfs with > 40% cover. These data support a model of alternative community states: H. banksii dominated canopy on rocky substrata versus C. officinalis turf. In field and laboratory experiments, extensive coralline turfs (up to 4 cm thick) were shown to inhibit recruitment of H. banksii. This study shows competitive exclusion by coralline turfs may limit the successful restoration of habitat provided by H. banksii to shores that have been affected by sustained discharge of secondarily treated sewage effluent. We suggest potential strategies for management authorities to consider when seeking ways of restoring fucoid communities affected by anthropogenic disturbances such as wastewater disposal.KEY WORDS: Hormosira banksii · Restoration · Sewage effluent · Recruitment · Competition · Ecosystem engineer · Alternative stable states Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 419: [47][48][49][50][51][52][53][54][55][56] 2010 effluent discharge (Manning 1979, Brown et al. 1990, Doblin & Clayton 1995, Kevekordes 2000, 2001.Melbourne, the coastal capital city of Victoria, Australia, has a population of 3.81 million (ABS 2007) and a daily sewage effluent discharge of 855 × 10 6 l (MW 2009). Approximately 43% of Melbourne's sewage is secondarily treated and discharged below the low water mark at Boags Rocks on the Mornington Peninsula (MW 2009) (Fig. 1). Hormosira banksii has disappeared completely from Boags Rocks and is greatly reduced in abundance at sites to the southeast of the outfall since the commencement of effluent discharge in 1975 (Manning 1979, Brown et al. 1990, Bellgrove et al. 1997. Ammonium and reduced salinity (due to effluent being discharged in freshwater) affect fertilisation and/or early development and survival of embryos of H. banksii (Doblin & Clayton 1995, Kevekordes 2000, 2001, probably affecting successful recruitment and contributing to the decline of this species in these areas. In contrast, we have relatively little knowledge about the regenerative abilities of H. banksii, which can regrow from basal tissue fragments and successfully recruit from fertilised...

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“…As coralline algae provide habitat for a large number of small invertebrates (Chapman et al 2005, Bussell et al 2007) and occur along 1000s of km of shoreline, they may be useful in studies analysing changes in benthic biodiversity and taxonomic turnover at different spatial scales.…”

Section: Abstract: Coralline Turf · Beta Diversity · Latitudinal Trementioning

confidence: 99%

“…At a continental scale, richness of molluscan species and total abundances of individuals associated with coralline algae are greater on Australian than on European and South American shores (Kelaher et al 2004). As coralline algae provide habitat for a large number of small invertebrates (Chapman et al 2005, Bussell et al 2007) and occur along 1000s of km of shoreline, they may be useful in studies analysing changes in benthic biodiversity and taxonomic turnover at different spatial scales.…”

Section: Introductionmentioning

confidence: 99%

Macrofaunal assemblages associated with coralline turf: species turnover and changes in structure at different spatial scales

Liuzzi¹,

Gappa²

2008

Mar. Ecol. Prog. Ser.

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Our aim was to analyse changes in species turnover and structure of macrofaunal assemblages associated with intertidal coralline algal turfs at 4 spatial scales along the coast of Argentina (southwestern Atlantic): provinces (~10 6 m), localities (~10 4 m), sites (~10 2 m) and replicate quadrats (~1 to 3 m). Corallina officinalis was by far the dominant algal species in most samples, but C. elongata and Jania rubens var. rubens were also frequent. Frond density was 3 times higher in the southern, cold-temperate Chubut province than in the northern, warm-temperate Buenos Aires province. Macrofaunal species richness, diversity and evenness were also significantly higher in samples from Chubut than in those from Buenos Aires, with 'province' explaining 86 to 98% of the variance in the analytical model. In total, 118 macrofaunal taxa belonging to 11 invertebrate phyla were found. Mytilid bivalves and polychaetes were the most important groups contributing to differences between provinces. Brachidontes rodriguezii was extremely abundant in Buenos Aires province, while Rhynchospio glutaea and Perumytilus purpuratus were dominant in samples from Chubut. Changes in assemblage structure were significant at the scale of provinces, localities and sites in Patagonian localities. Measures of beta diversity showed that taxonomic turnover was correlated with distance between samples at scales of 10 4 m or higher, with the highest at the scale of provinces. Higher biodiversity in the Magellan assemblage than in warmer areas of the northern coast of Argentina may be related to the Pacific origin of the Magellan fauna, which entered the southwestern Atlantic during the Tertiary period. KEY WORDS: Coralline turf · Beta diversity · Latitudinal trends of biodiversity · Spatial scales · Rocky intertidal · Corallina · ArgentinaResale or republication not permitted without written consent of the publisher Mar Ecol Prog Ser 363: 147-156, 2008 than on European and South American shores (Kelaher et al. 2004). As coralline algae provide habitat for a large number of small invertebrates (Chapman et al. 2005, Bussell et al. 2007) and occur along 1000s of km of shoreline, they may be useful in studies analysing changes in benthic biodiversity and taxonomic turnover at different spatial scales.Species diversity has been partitioned into different components. Beta diversity, i.e. the extent of change in species composition among the samples of a data set (Whittaker 1975, Gray 2000, describes taxonomic turnover in assemblages at various spatial scales within a habitat (Winberg et al. 2007). A vast array of measures to assess beta diversity has been proposed (Koleff et al. 2003), some of which are used to analyse the degree of taxonomic change in the benthic environment (Ellingsen 2002).Latitudinal gradients in species richness are well documented in terrestrial ecosystems (Rosenzweig 1995). In the marine realm, however, the existence of a latitudinal cline for the shallow water fauna is debatable. In the northern hemisphere, the num...

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Intertidal assemblages associated with naturalcorallina turf and invasive mussel beds

Cited by 58 publications

References 63 publications

Effects of changes in number, identity and abundance of habitat-forming species on assemblages of rocky seashores

Effects of changes in number, identity and abundance of habitat-forming species on assemblages of rocky seashores

Effects of disturbance timing on community recovery in an intertidal habitat of a Korean rocky shore

Macrofaunal assemblages associated with coralline turf: species turnover and changes in structure at different spatial scales

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