Spatial and temporal dynamics of ascidian invasions in the continental United States and Alaska

Simkanin, Christina; Fofonoff, Paul W.; Larson, Kristen; Lambert, Gretchen; Dijkstra, Jennifer A.; Ruiz, Gregory M.

doi:10.1007/s00227-016-2924-9

Cited by 21 publications

(12 citation statements)

References 93 publications

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“…Ascidians have experienced many biological invasions and concomitant range expansions in recent decades (e.g. Gittenberger 2007;Lambert 2007Lambert , 2009Ruis et al 2012;Ordóñez et al 2013;Zhan et al 2015;Bullard and Carmen 2016;Simkanin et al 2016;Nydam et al 2017).…”

Section: Discussionmentioning

confidence: 99%

“…In the Netherlands, non-native ascidians colonized during two major spates, one in 1974-1977, the other in 1991-2004 (Gittenberger 2007). The increase in the number of non-native ascidian species reported in the USA was low but relatively linear between 1850 and 1950, thereafter increasing sharply on both Pacific and Atlantic coasts (Simkanin et al 2016).…”

Section: Introductionmentioning

confidence: 98%

“…Numerous ascidian species have experienced an increase in global range linked to humanmediated spread and, in some cases, climate warming (e.g. Lambert 2001Lambert , 2007Sorte et al Hoxha et al 3 2010; Bock et al 2011;Zhan et al 2015;Simkanin et al 2016;Nydam et al 2017). In total, Zhan et al (2015) catalogued 80 species that were recognized as non-native in the habitats in which they were reported.…”

Section: Introductionmentioning

confidence: 99%

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Comparative feeding rates of native and invasive ascidians

Hoxha

Crookes

Lejeusne

et al. 2018

Marine Pollution Bulletin

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Ascidians have a recent history of species introductions globally, often with strong ecological impacts. Comparisons of per capita effects of invaders and comparable natives are useful to assess such impacts. Here, we explore ingestion rates (IR) and clearance rates (CR) of Ciona intestinalis and Ciona robusta, co-occurring native and non-native ascidians, respectively, from Brittany, France. IR was positively related to food concentration, with the invader responding more strongly to increasing food concentration. CR also differed by species, with the invader demonstrating higher values. C. robusta exhibited a higher functional response (Type I) than did C. intestinalis (Type II). Relative impact measured using seasonal abundance and IR revealed that C. robusta has a much greater impact than C. intestinalis at all food concentrations tested, though the former has a constrained distribution which limits its regional impact. Nevertheless, when abundant, we expect C. robusta to exert a greater impact on algal foods.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Comparative feeding rates of native and invasive ascidians

Hoxha

Crookes

Lejeusne

et al. 2018

Marine Pollution Bulletin

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“…The invader is now firmly established in the four major harbours of Northland—the Parengarenga, Houhora, Rangaunu and Hokianga harbours. A recent review chronicling the invasion and spread of invasive ascidians in the United States notes that 97% of these invasive taxa have continued to spread after their initial invasion (Simkanin et al, ), with the hulls of vessels identified as an important vector of dispersal.…”

Section: Discussionmentioning

confidence: 99%

“…TA B L E 4 Summary of three-factor PERMANOVA for the assemblage associated with clumps of a native mussel (Perna canaliculus) and an invasive ascidian (Pyura doppelgangera) on two rocky shore habitats at two locations in Northern New Zealand Northland-the Parengarenga, Houhora, Rangaunu and Hokianga harbours. A recent review chronicling the invasion and spread of invasive ascidians in the United States notes that 97% of these invasive taxa have continued to spread after their initial invasion (Simkanin et al, 2016), with the hulls of vessels identified as an important vector of dispersal.…”

Section: Discussionmentioning

confidence: 99%

Biotic consequences of a shift in invertebrate ecosystem engineers: Invasion of New Zealand rocky shores by a zone‐forming ascidian

2018

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The pervasive effects of invasive ecosystem engineers, that is those species that modify their environment, are well documented, but rarely have the broader impacts of one foundation invertebrate species being replaced by another been examined. In New Zealand, green‐lipped mussels, Perna canaliculus, commonly dominate wave‐exposed rocky shores. The recent appearance of an invasive ecosystem engineer, the ascidian Pyura doppelgangera, at the very northern tip of New Zealand now threatens to exclude these bivalves from this habitat. Here, we report major shifts in assemblages associated with the invader and chronicle its continued spread. We examined epibiota associated with clumps of mussels and clumps of Pyura from two rocky shore habitats—pools and emergent substrata at two locations. We detected some differences in species richness in biota associated with the two foundation species, but faunal abundance only differed between the locations. These minor changes were dwarfed by the shift in species composition within clumps of each foundation species. Molluscs, particularly gastropods, and crustaceans dominated the assemblage within mussels. In contrast, tubicolous polychaetes dominated the fauna associated with the ascidian. Sessile epifauna, notably barnacles and calcareous tube‐dwelling polychaetes, were common on mussels, but never encountered on the ascidian. Multivariate analysis revealed marked dissimilarity (>80%) between the characteristic mussel and ascidian faunas with virtually no overlap. This biotic shift overshadowed any differences between habitats and locations. The broader implications of these faunal shifts for local and regional patterns of biodiversity, as well as ecosystem function, remain unclear, but deserve further attention.

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An overview of recent research in marine biological invasions

Chan

Briski

2017

Mar Biol

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The Topical Collection on Invasive Species includes 50 articles addressing many tenets of marine invasion ecology. The collection covers important topics relating to propagule pressure associated with transport vectors, species characteristics, attributes of recipient ecosystems, invasion genetics, biotic interactions, testing of invasion hypotheses, invasion dynamics and spread, and impacts of nonindigenous species. This article summarizes some of the collection’s highlights.

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Spatial and temporal dynamics of ascidian invasions in the continental United States and Alaska

Cited by 21 publications

References 93 publications

Comparative feeding rates of native and invasive ascidians

Comparative feeding rates of native and invasive ascidians

Biotic consequences of a shift in invertebrate ecosystem engineers: Invasion of New Zealand rocky shores by a zone‐forming ascidian

An overview of recent research in marine biological invasions

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