Epifaunal and algal assemblages associated with the native Chondrus crispus (Stackhouse) and the non-native Grateloupia turuturu (Yamada) in eastern Long Island Sound

Janiak, Dean S.; Whitlatch, Robert B.

doi:10.1016/j.jembe.2011.11.016

Cited by 47 publications

(24 citation statements)

References 46 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: 97%

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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: 97%

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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“…; Williams & Grosholz ; Casas et al . ; Scheibling & Gagnon ; Janiak & Whitlatch ) but the pattern is not consistent with neutral or positive changes in macrophytes observed in other cases (Jaubert et al . , ; Wear & Gardner ; Forrest & Taylor ; Thomsen et al .…”

Section: Discussionmentioning

confidence: 99%

“…Schueller & Peters ; Ceccherelli & Cinelli ; Williams & Grosholz ; Schmidt & Scheibling ; Schaffelke & Hewitt ; Byers et al . ; Janiak & Whitlatch ). Our knowledge of the ecological consequences of introduced seaweeds is still in its infancy, however.…”

Section: Introductionmentioning

confidence: 99%

The putative impacts of the non‐native seaweed Sargassum muticum on native communities in tidepools of Southern California and investigation into the feasibility of local eradication

Smith

2015

Marine Ecology

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The ecological impacts of introduced seaweeds have been relatively understudied. Current research suggests that seaweed invasions often result in alterations of native marine communities and disruptions of normal ecosystem functioning, but the effects on native communities can vary among invasive seaweed species, among habitats and over small and large spatial scales. In this study, the impacts of Sargassum muticum, a non‐native brown alga introduced into southern California, USA, several decades ago, were examined by comparing community structure in rocky inter‐tidal pools with and without the seaweed. Sargassum muticum appeared to have little impact on the native community despite measures revealing changes in the abiotic conditions of pools, with S. muticum presence reducing light penetration and ameliorating pool temperature changes during low tides. In other regions and habitat types, S. muticum presence often, but not consistently, resulted in declines in macrophyte diversity and/or abundance and increases in faunal assemblages. The lack of effects of S. muticum in this study, combined with variable impacts by S. muticum and other invasive seaweeds worldwide, suggests that predicting the effects of introduced seaweeds is problematic and warrants further research. Regardless of the effects on native communities, there is often a desire to eradicate or control the spread of non‐native seaweeds. In this study, localized S. muticum eradication attempts, including manipulations of a native canopy and herbivorous urchins, proved unsuccessful as full recovery occurred in ~9 months. While eradication efforts conducted worldwide have resulted in mixed success, there is a trend that early detection and rapid response can increase success, highlighting a need for systematic monitoring and establishment of regional rapid response plans.

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“…Numerous invertebrates are dependent on seaweeds with varying morphological features, including the complex three-dimensional Macrocystis (Graham 2004), the compact spongy Codium (Trowbridge 1998;Bulleri et al 2006), the fan-like broad thallus of Chondrus (Janiak and Whitlatch 2012), the crustose coralline algae Clathromorphum (Chenelot et al 2011) and the calcareous rhodoliths (Foster 2001). Steller et al (2003) reported that the total number of organisms supported by the coralline red algal rhodoliths significantly increased with both complexity (branching density) and space available (thallus volume) when compared with adjacent sand community.…”

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confidence: 99%

Saccate thallus of the red alga Halosaccion glandiforme harbor diverse invertebrate fauna

Bhaduri

Wolf

2017

Int Aquat Res

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Rocky intertidal zones are biologically diverse environments with numerous physical stressors; as such, close associations between organisms often develop to overcome such stressors and enhance survival of associates. As major components of rocky shores, macroalgae support numerous invertebrate species. In this study, we evaluated the habitat-providing role of the red alga, Halosaccion glandiforme (S.G. Gmelin) Ruprecht. This alga, also called sea sacs, is commonly found on rocky shores along the West Coast of North America. During emersion, this seaweed holds water within its saccate thallus, which can potentially serve as microhabitat for various organisms. Little is known about the composition of microfauna associated with this seaweed; as such, we documented richness and abundance of species found inside its thallus. Algal specimens were collected from Charleston, Oregon and transported to the laboratory for further analyses. Of the 119 thalli examined, 12 taxa were documented. Nematodes and copepods were the dominant taxa. Other groups represented included ostracods, turbellarians, halacarid mites, bivalves, rotifers, and three larval types (barnacle cyprids, copepod nauplii, mollusc veliger). Diatoms, crustacean molt remnants, detritus, and sand particles were also observed inside thalli. Species richness and abundance were positively correlated with thalli volume, as well as intra-thalli fluid volume. Several feeding and other behaviors of colonizers were noted; they included herbivory, predator-prey interactions, detritivory, and molting. Our findings demonstrate that H. glandiforme provide refuge for organisms from harsh environmental conditions during emersion periods, and also serve as feeding and nursery grounds for its diverse invertebrate fauna.

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Epifaunal and algal assemblages associated with the native Chondrus crispus (Stackhouse) and the non-native Grateloupia turuturu (Yamada) in eastern Long Island Sound

Cited by 47 publications

References 46 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>

The putative impacts of the non‐native seaweed Sargassum muticum on native communities in tidepools of Southern California and investigation into the feasibility of local eradication

Saccate thallus of the red alga Halosaccion glandiforme harbor diverse invertebrate fauna

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