Variability of epifaunal assemblages associated with native and invasive macroalgae

Gestoso, Ignácio; Olabarria, Celia; Troncoso, Jesús S.

doi:10.1071/mf09251

Cited by 51 publications

(45 citation statements)

References 41 publications

(65 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Marine macroalgae are conspicuous and dominant features of temperate intertidal and subtidal ecosystems and have important direct and indirect effects on coexisting species (Schmidt and Scheibling, 2006;Gestoso et al, 2010). Macroalgae are considered ecosystem engineers because they add spatial complexity to the substratum, modulating availability of resources and can affect assemblages of associated epibiota (Schmidt and Scheibling, 2006;Gestoso et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Macroalgae are considered ecosystem engineers because they add spatial complexity to the substratum, modulating availability of resources and can affect assemblages of associated epibiota (Schmidt and Scheibling, 2006;Gestoso et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Totti et al (2009) conducted a survey on epiphytic diatom communities on ten species of seaweeds belonging to brown, red and green macroalgae from Iceland coastal waters. Gestoso et al (2010) investigated the variability of epifaunal assemblages associated with native and invasive macroalgae.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ecological Studies of Epiphytic Microalgae and Epiphytic Zooplankton on Seaweeds of the Eastern Harbor, Alexandria, Egypt

El-Din¹,

Shaltout²,

Nassar³

et al. 2015

American Journal of Environmental Sciences

View full text Add to dashboard Cite

Abstract:A qualitative and quantitative study on the epiphytic microalgae and epiphytic zooplankton were conducted in order to follow up their community structures on seaweeds in relation to some physicochemical variables in the coastal waters of the Eastern Harbor of Alexandria. Water and macroalgal samples were collected seasonally during two years successively: Winter, summer, autumn (2012) and spring (2013). The collected seaweeds were Ulva fasciata (green alga), Corallina mediterranea, Corallina officinalis, Gelidium sp., Pterocladiella capillacea, Hypnea musciformis and Grateloupia doryphora (red algae). The studied water quality parameters were pH, salinity, dissolved oxygen, oxidizable organic matter and nutrient salts. The abundance of epiphytes were significantly different between morphotypes (two-way ANOVA), p≤0.05; ranking the branched thalli as the first preference for microalgal epihytes, sheet-like thalli with a smooth surface as the second one, while the lowest rank was for the mucilaginous species. The same result was found for epiphytic zooplankton. The results of the statistics revealed insignificant seasonal variations in the epiphytic microalgae and very weak correlations between the abundance of microalgae and the physico-chemical parameters. In contrast, there were significant differences for epiphytic zooplanktonic seasonal variations. Whereas, the zooplankton count was correlated preferably with environmental water salinity, followed by nutrients.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Ecological Studies of Epiphytic Microalgae and Epiphytic Zooplankton on Seaweeds of the Eastern Harbor, Alexandria, Egypt

El-Din¹,

Shaltout²,

Nassar³

et al. 2015

American Journal of Environmental Sciences

View full text Add to dashboard Cite

show abstract

“…Sites were located in the lower intertidal zone (0.4-0.8 m above the lowest astronomical tide) on the eastern side of two rias, Ria de Aldan (42820 0 N; 8851 0 W) and Ria de Vigo (42810 0 N; 8851 0 W), located in the southern region of the Galician coast, NW Spain (see Gestoso et al 2010 for detailed description of area). We randomly chose three sites from a pool of available sites with slightly different wave exposure, and dominated by the three macroalgae forming mixed stands.…”

Section: Study Area and Sampling Designmentioning

confidence: 99%

Effects of macroalgal identity on epifaunal assemblages: native species versus the invasive species Sargassum muticum

2011

Self Cite

View full text Add to dashboard Cite

Seaweeds are a refuge from stressful conditions associated with life on rocky intertidal shores, and there is evidence that different macrophytes support different assemblages of mobile epifauna. Introduction of nonindigenous macroalgae may have a great impact on associated epifaunal assemblages and ecosystem processes in coastal areas. Previous studies have reported conflicting evidences for the ability of epifauna to colonize nonindigenous species. Here, we analyzed epifaunal assemblages associated with three species of macroalgae that are very abundant on intertidal shores along the Galician coast: the two native species Bifurcaria bifurcata and Saccorhiza polyschides and the invasive species Sargassum muticum. We collected samples of each species from three different sites at three different times to test whether variability of epifaunal assemblages was consistent over space and time. Epifaunal assemblages differed between the three macroalgae. Results suggested that stability and morphology of habitat played an important role in shaping the structure of epifaunal assemblages. This study also showed that the invasive S. muticum offered a suitable habitat for many invertebrates.

show abstract

“…However, the latter two host a relatively abundant population of epiphytes. Though they do not have the highest biomass of epiphytic species, marine macroalgae hosted the highest species diversity (Table 3), probably because they showed spatial complexity and could modulate the availability of resources, therefore affecting assemblages of associated epibiota (Gestoso et al 2010). In particular, host algae with a branched structure like Cystoseira mediterranea or with a filamentous structure like Dictyota dichotoma usually have a high degree of structural complexity, which may make them more suitable as habitats for epibiota (Totti et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Variability patterns of epibenthic microalgae in eastern Tunisian coasts

et al. 2017

View full text Add to dashboard Cite

Summary: Epiphytic microalgae were monitored on various substrates of seagrass and macroalgae and in the water column for one year (from March 2013 to March 2014) in Oued Lafrann along the eastern coast of Chebba (Tunisia) with a focus on the distribution patterns of the epibenthic toxic dinoflagellates Ostreopsis cf. ovata, Prorocentrum lima and Coolia monotis. Microalgae assemblages were dominated by diatoms and dinoflagellates both in the water column and on vegetation. High concentrations of epiphytic toxic and potentially toxic dinoflagellates were preferentially hosted by Posidonia leaves, mainly in the apical and middle regions of the leaves, and P. lima was the dominant species. A significant positive correlation was found between P. lima concentrations on Posidonia and in the water column, suggesting that macrophytes should be sampled in the framework of harmful algal species monitoring. Ostreopsis cf. ovata, exhibited low concentrations and was mainly present on the inner surface of the Posidonia leaf, whereas P. lima was mainly present on the outer surface of the leaf, suggesting a likely space competition.Keywords: Prorocentrum lima; Ostreopsis cf. ovata; Coolia monotis; Prorocentrum micans; magnoliophytes; macroalgae. Patrones de variabilidad de las microalgas epibentónicas en la costa este tunecinaResumen: Las microalgas epifitas fueron monitorizadas en varios sustratos de praderas marinas, macroalgas y en la columna de agua durante un año (de marzo 2013 hasta marzo 2014) en Oued Lafrann, en la costa este de Chebba (Túnez), con especial atención a la distribución de dinoflagelados tóxicos epibénicos, como Ostreopsis cf. ovata, Prorocentrum lima y Coolia monotis. Las comunidades de microalgas estaban dominadas por diatomeas y dinoflagelados, tanto en la columna de agua como en la vegetación. Se encontraron elevadas concentraciones de dinoflagelados epífitos tóxicos preferentemente en las hojas de Posidonia, principalmente en las regiones apicales y media y Prorocentrum lima fue la especie epífita dominante. Se observó una correlación positiva significativa entre las concentraciones de P. lima en Posidonia y en la columna de agua, lo que sugiere el muestreo de esta macrófita como parte de la monitorización de especies nocivas. Las células de Ostreopsis cf. ovata mostraron concentraciones bajas y se encontraron principalmente en la superficie interior de la hoja de Posidonia contrariamente a la distribución de P. lima presente principalmente en la superficie exterior de la lámina. Este hecho probablemente sugiere una competencia espacial entre los dos microalgas tóxicas.

show abstract

Variability of epifaunal assemblages associated with native and invasive macroalgae

Cited by 51 publications

References 41 publications

Ecological Studies of Epiphytic Microalgae and Epiphytic Zooplankton on Seaweeds of the Eastern Harbor, Alexandria, Egypt

Ecological Studies of Epiphytic Microalgae and Epiphytic Zooplankton on Seaweeds of the Eastern Harbor, Alexandria, Egypt

Effects of macroalgal identity on epifaunal assemblages: native species versus the invasive species Sargassum muticum

Variability patterns of epibenthic microalgae in eastern Tunisian coasts

Contact Info

Product

Resources

About