Faunal differences between the invasive brown macroalga Sargassum muticum and competing native macroalgae

Engelen, Aschwin H.; Primo, Ana Lígia; Cruz, Teresa; Santos, Rui

doi:10.1007/s10530-012-0276-z

Cited by 36 publications

(30 citation statements)

References 44 publications

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“…This finding agrees with those described for other introduced seaweeds, suggesting that, while macroalgal invasions strongly affect diversity of sessile assemblages (Ribera and Boudouresque 1995, Piazzi et al 2001, Schaffelke and Hewitt 2007, Baldacconi and Corriero 2009, Zuljevic and Nikolic 2008, the effects of invasions on mobile organisms are more related to changes in the structure of assemblages (Vázquez-Luis et al 2009, Gestoso et al 2012, Janiak et al 2012, Pacciardi et al 2011, Engelen et al 2013. Differences between invaded and non-invaded beds were not evident five months after the disappearance of L. lallemandii.…”

Section: Discussionsupporting

confidence: 90%

“…Epifaunal assemblages associated with C. crinita were characterized by high abundance and diversity, compared with those described for other seaweed habitats (Gestoso et al 2012, Janiak et al 2012, Engelen et al 2013. Macroalgal assemblages associated with Mediterranean Cystoseira beds are well known (Boudouresque 1972, Sales and Ballesteros 2010), while epifaunal assemblages have been less investigated and knowledge is limited to particular taxa (Arrontes and Anadon 1990, Chemello and Milazzo 2002, Fraschetti et al 2002.…”

Section: Discussionmentioning

confidence: 96%

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Mobile epifaunal assemblages associated with Cystoseira beds: comparison between areas invaded and not invaded by Lophocladia lallemandii

Bedini¹,

Bonechi²,

Piazzi³

2014

Sci. Mar.

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Summary:The study compared the structure of mobile epifaunal assemblages associated with Mediterranean Cystoseira beds between areas invaded and not invaded by Lophocladia lallemandii. A total of 150 taxa were identified: 42 Polychaeta, 78 Arthropoda, 26 Mollusca and 4 Echinodermata. Epifaunal assemblages differed between areas invaded and not invaded by Lophocladia lallemandii when the invasive species reached maximum values of cover and biomass, while differences between conditions were not significant in other periods of the year. The main differences were the greater abundance of amphipods, isopods and polychaetes in invaded areas and the greater abundance of molluscs and decapods in non-invaded areas, while richness and total abundance of organisms were not significantly different between conditions. The effects of Lophocladia lallemandii invasion on Cystoseira-associated assemblages seem to be limited to the period of vegetative growth of the alga and reversible during the period of its vegetative rest.Keywords: biological invasions; Cystoseira crinita; Lophocladia lallemandii; Mediterranean Sea; mobile epifauna. Comunidad de epifauna móvil asociada a las bosques de Cystoseira: comparación entre áreas invadidas y no invadidas por Lophocladia lallemandiiResumen: Este estudio compara la estructura de la comunidad de macroinvertebrados móviles asociada a bosques mediterráneos de Cystoseira entre áreas invadidas por Lophocladia lallemandii y áreas no invadidas. Se identificaron un total de 150 táxones: 42 Polychaeta, 78 Arthropoda, 26 Mollusca, 4 Echinodermata. La comunidad epifaunal difirió entre áreas invadidas por Lophocladia lallemandii y áreas no invadidas cuando la Rhodophyta introducida alcanzó valores máximos de cobertura y biomasa, mientras que no presentó diferencias entre condiciones en otros períodos del año. Estas diferencias fueron principalmente debidas a una mayor abundancia de anfípodos, isópodos y poliquetos en áreas invadidas, y de moluscos y decápodos en áreas no invadidas, mientras que la riqueza y abundancia total de organismos no presentaron diferencias significativas entre condiciones. Los efectos de la invasión de Lophocladia lallemandii sobre las comunidades asociadas a Cystoseira parecen estar restringidos al período de crecimiento vegetativo del alga, siendo reversibles durante el período de pausa de crecimiento.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 96%

Mobile epifaunal assemblages associated with Cystoseira beds: comparison between areas invaded and not invaded by Lophocladia lallemandii

Bedini¹,

Bonechi²,

Piazzi³

2014

Sci. Mar.

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“…It can be suggested that the complexity of the algal habitat was not an important factor affecting the abundance of A. lusitanica. Previous studies showed that the structural complexity of algae was not a consistent predictor of the number of individuals and species of amphipods (Russo 1990;Schreider et al 2003;Engelen et al 2013). Conversely, Taylor and Cole (1994) and Wernberg et al (2004) reported a higher abundance of small crustaceans in more structurally complex algal habitats.…”

Section: Discussionmentioning

confidence: 93%

Ampelisca lusitanica (Crustacea: Amphipoda): new species for the Atlantic coast of Morocco

et al. 2017

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Background: This study reports for the first time the presence of the Lusitanian ampeliscid amphipod Ampelisca lusitanica Bellan-Santini & Marques, 1986 in the northwestern Atlantic coast of Morocco. Methods: Specimens were collected in January 2015 from intertidal rock pools along the El Jadida shoreline associated with the brown algae Bifurcaria bifurcata and Sargassum muticum. Results: Systematic description of the species is presented, as well as a discussion of its ecological and geographical distribution. Conclusion: This new finding extends the geographical distribution from the Lusitanian (Europe) to the Mauritanian (Africa) region and increases knowledge of the ecology and the global distribution of A. lusitanica found, previously, only on Portuguese and Spanish coasts.

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“…Besides, the alga itself and the epiphytic assemblage supported by it may be used as food by associated animals (Viejo 1999), and differences in diet preferences and algal palatability may favor different faunas (Duffy & Hay 1991, Zamzow et al 2010, Tavares et al 2013, Machado et al 2017). Thus, variation in both algal host attributes, and associated fauna needs in terms of habitat and food, results on species-specific interactions and, consequently, on a taxonomic diversity of associated organisms among coexisting macroalgae in the shore (Engelen et al 2013, Best et al 2014. In this way, the spatial heterogeneity of hosts and the algal identity may play a crucial role in maintaining the biodiversity in intertidal areas, reinforcing the idea that conservation efforts should take into account different spatial scales (Thompson et al 2002).…”

Section: Introductionmentioning

confidence: 91%

Co-occurring morphologically distinct algae support a diverse associated fauna in the intertidal zone of Araçá Bay, Brazil

et al. 2018

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Co-occurring morphologically distinct algae support a diverse associated fauna in the intertidal zone of Araçá Bay, Brazil. Biota Neotropica. 18(1): e20170464. http://dx.doi.org/10.1590/1676-0611- BN-2017-0464 Abstract: Species diversity is regulated by historical, neutral and niche processes, with species tolerance, dispersal and productivity guiding diversity at larger scales, while habitat heterogeneity and biotic interactions acts in smaller scales. In rocky shores, several organisms provide secondary substrates for mobile fauna, with macroalgae being the most abundant and diverse ones. The patchiness promoted by different macroalgae hosts enhances small-scale heterogeneity and may increase and maintain the diversity of the mobile organisms, since there is a close relationship between the associated fauna and its hosts. In this study we selected three morphologically different macroalgae that coexist in the same rocky shore height in the Araçá Bay, an area under the threat of the nearby harbor expansion, and evaluated the fauna associated to each algal host. Even under similar abiotic pressure (same rocky shore height), the associated fauna of each algal host varied in number and composition, revealing a close relationship. The poorly branched foliose Ulva lactuca sustained a lower density of organisms and was dominated by isopods, while the heavily branched turf and Bostrychietum community showed a high density of organisms, with a dominance of peracarid crustaceans and annelids on the turf and more resistant groups, such as bivalves, acaris and terrestrial insects on the Bostrychietum. Previous studies in the Araçá Bay already revealed a large spatial heterogeneity in the processes and sessile organisms distribution, and here we highlight that this heterogeneity can be observed in an even smaller scale, with different algal hosts mediating the turnover of species in a scale of centimeters and meters, resulting in diversity maintenance of the associated fauna. Since the harbor expansion may prevent the occurrence of macroalgae as a result of light limitation by suspended platforms, we may expect not only a decrease in algal cover but also in the total diversity of the associated fauna in the Araçá Bay. Keywords: rocky shore, phytal, peracarids, structural complexity, spatial heterogeneity Algas co-ocorrentes e morfologicamente distintas suportam uma diversa fauna associada na zona entremarés na Baía do Araçá, BrasilResumo: A diversidade de espécies é regulada por processos históricos, neutros e de nicho, com a tolerância das espécies, dispersão e produtividade do sistema guiando a diversidade em grandes escalas, enquanto a heterogeneidade do habitat e as interações bióticas atuam em escalas menores. Em costões rochosos uma série de organismos funciona como substrato secundário para a fauna móvel, sendo macroalgas o tipo mais abundante e diverso de substrato. O mosaico formado pelas diferentes macroalgas hospedeiras aumenta a heterogeneidade em pequena escala e pode aumentar e manter a diversidade dos org...

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Faunal differences between the invasive brown macroalga Sargassum muticum and competing native macroalgae

Cited by 36 publications

References 44 publications

Mobile epifaunal assemblages associated with <em>Cystoseira</em> beds: comparison between areas invaded and not invaded by <em>Lophocladia lallemandii</em>

Mobile epifaunal assemblages associated with <em>Cystoseira</em> beds: comparison between areas invaded and not invaded by <em>Lophocladia lallemandii</em>

Ampelisca lusitanica (Crustacea: Amphipoda): new species for the Atlantic coast of Morocco

Co-occurring morphologically distinct algae support a diverse associated fauna in the intertidal zone of Araçá Bay, Brazil

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