Epiphytes and associated fauna on the brown alga <i>Fucus vesiculosus</i> in the Baltic and the North Seas in relation to different abiotic and biotic variables

Kersen, Priit; Kotta, Jonne; Bučas, Martynas; Kolesova, Natalja; Deķere, Zane

doi:10.1111/j.1439-0485.2010.00418.x

Cited by 37 publications

(27 citation statements)

References 40 publications

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“…Grazers may facilitate macroalgal growth either by removing fouling epiphytes or by increasing the concentration of available nutrients (Guidone et al 2012). The context-dependency of facilitation in our study may be explained by the more pronounced effect of grazers on nutrient concentrations at elevated temperatures (Werner and Matthiessen 2013) or the greater potential for grazing to alleviate the growth-inhibiting effects of heavier epiphytic loads that develop under conditions of reduced wave action and warming (Kersen et al 2011). The apparent disruptive effect of wave action on warming-induced positive species interactions is another means by which altered environmental conditions can modify the effects of consumer diversity change.…”

Section: Discussionmentioning

confidence: 77%

Wave action modifies the effects of consumer diversity and warming on algal assemblages

Mrowicki

O’Connor

2015

Ecology

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Abstract. To understand the consequences of biodiversity loss, it is necessary to test how biodiversity-ecosystem functioning relationships may vary with predicted environmental change. In particular, our understanding will be advanced by studies addressing the interactive effects of multiple stressors on the role of biodiversity across trophic levels. Predicted increases in wave disturbance and ocean warming, together with climate-driven range shifts of key consumer species, are likely to have profound impacts on the dynamics of coastal marine communities. We tested whether wave action and temperature modified the effects of gastropod grazer diversity (Patella vulgata, Littorina littorea, and Gibbula umbilicalis) on algal assemblages in experimental rock pools. The presence or absence of L. littorea appeared to drive changes in microalgal and macroalgal biomass and macroalgal assemblage structure. Macroalgal biomass also decreased with increasing grazer species richness, but only when wave action was enhanced. Further, independently of grazer diversity, wave action and temperature had interactive effects on macroalgal assemblage structure. Warming also led to a reversal of grazer-macroalgal interaction strengths from negative to positive, but only when there was no wave action. Our results show that hydrodynamic disturbance can exacerbate the effects of changing consumer diversity, and may also disrupt the influence of other environmental stressors on key consumer-resource interactions. These findings suggest that the combined effects of anticipated abiotic and biotic change on the functioning of coastal marine ecosystems, although difficult to predict, may be substantial.

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Section: Discussionmentioning

confidence: 77%

Wave action modifies the effects of consumer diversity and warming on algal assemblages

Mrowicki

O’Connor

2015

Ecology

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“…These large, perennial, canopy-forming macroalgae represent three-dimensional habitats harbouring numerous species of epibionts, sub-canopy flora and associated motile fauna, including juvenile fish (e.g. Thompson et al 1996, Kersen et al 2011, Ronnback et al 2007). They contribute substantially to water quality by the fixation of nutrients and carbon, by the provision of oxygen, and by buffering environmental stress (e.g.…”

Section: Regional Examples Of Stress Impactmentioning

confidence: 99%

The responses of brown macroalgae to environmental change from local to global scales: direct versus ecologically mediated effects

Wahl¹,

Molis²,

Hobday³

et al. 2015

pip

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Abstract:In many temperate regions, brown macroalgae fulfil essential ecosystem services such as the provision of structure, the fixation of nutrients and carbon, and the production of biomass and oxygen. Their populations in many regions around the globe have declined and/ or spatially shifted in recent decades. In this review we highlight the potential global and regional drives of these changes, describe the status of regionally particularly important brown macroalgal species, and describe the capacity of interactions among abiotic and biotic factors to amplify or buffer environmental pressure on brown macroalgae. We conclude with a consideration of possible management and restoration measures.

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“…In fact, these literatures focused on the epiphytic macroalgal species (Rindi and Guiry, 2004;Muñoz and Fotedar, 2009;Kersen et al, 2011), whereas very few literatures dealt with epiphytic microalgae and/or epifauna. Tanaka et al (1984) conducted a study on epiphytic microalgal communities on Sargassum piluriferum and artificial seagrasses in Sargassum bed.…”

Section: Introductionmentioning

confidence: 99%

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

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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.

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Epiphytes and associated fauna on the brown alga Fucus vesiculosus in the Baltic and the North Seas in relation to different abiotic and biotic variables

Cited by 37 publications

References 40 publications

Wave action modifies the effects of consumer diversity and warming on algal assemblages

Wave action modifies the effects of consumer diversity and warming on algal assemblages

The responses of brown macroalgae to environmental change from local to global scales: direct versus ecologically mediated effects

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

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