Freshwater hotspots of biological invasion are a function of species–pathway interactions

Bobeldyk, Angela M.; Rüegg, Janine; Lamberti, Gary A.

doi:10.1007/s10750-014-2009-z

Cited by 18 publications

(20 citation statements)

References 34 publications

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“…My meta-analysis supports this idea since 47% of the positive interactions I found in freshwater communities involved a positive effect of the invasive zebra mussel (Dreissena polymorpha) on other invasive benthic invertebrates. Consequently, I suggest that ecosystems with numerous invasive species are a result of multiple introductions and correlations in invasion pathways (such as ballast water), rather than facilitative interactions among invaders (Ricciardi 2006, Adebayo et al 2014, Bobeldyk et al 2015.…”

Section: Discussionmentioning

confidence: 99%

Interactions among multiple invasive animals

Jackson

2015

Ecology

116

101

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Abstract. With accelerating rates of invasion being documented in many ecosystems, communities of interacting invasive species are becoming increasingly common. Opposing theories predict that invaders can either hinder or promote one another's success. Additionally, evidence suggests that co-occurring invaders can interact to amplify or mitigate one another's impacts on ecosystems. However, there has not been a quantitative review on interactions among multiple invasive animals. Here I use a meta-analysis approach to show that, across a global scale, the mean interaction among invaders was to reduce one another's performance. This pattern was consistent when considering interactions between marine animals but interactions were neutral overall in terrestrial and freshwater ecosystems. Crucially, individual studies showed that neutral interactions were the most common interaction type. Further, I demonstrate that the combined ecological impacts of multiple invaders were frequently the sum of their independent effects (additive) but the mean effect was non-additive and less than predicted (antagonistic). In both meta-analyses, the disparity between the most frequent and mean interaction type indicates that case studies of multiple invasions commonly have different outcomes to global trends. These results will help predict how co-occurring invasive animals interact and assist in developing management strategies for problematic invaders in our changing world.

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Section: Discussionmentioning

confidence: 99%

Interactions among multiple invasive animals

Jackson

2015

Ecology

116

101

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“…In addition, functionally important sites, such as water catchments, wetlands, and waterways, are often priorities for management of multiple alien plant taxa (Fig. 5; Table 2; Bobeldyk et al 2015). Sites may be sensitive, for example, because of their high conservation status or functional importance ( Fig.…”

Section: Prioritizing Susceptible and Sensitive Sitesmentioning

confidence: 99%

“…Recently Bobeldyk et al (2015) showed that invertebrate introductions into the US were predominantly associated with ballast water, whereas fish introductions were largely via aquaria and aquaculture (i.e. considering species and pathway priorities).…”

Section: Integrated Prioritization Of Species Pathways and Sitesmentioning

confidence: 99%

“…This compromises the ability of countries to accurately report on progress toward Aichi Target 9. Even when countries are data-rich, prioritization is essential and data are not always adequate to do so (Bobeldyk et al 2015). Conducting empirical risk assessments for every possible species, pathway and site is time-consuming, costly, and generally not feasible.…”

Section: When Data and Capacity Are Inadequatementioning

confidence: 99%

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Prioritizing species, pathways, and sites to achieve conservation targets for biological invasion

Genovesi²,

et al. 2015

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Prioritization is indispensable for the management of biological invasions, as recognized by the Convention on Biological Diversity, its current strategic plan, and specifically Aichi Target 9 that concerns invasive alien species. Here we provide an overview of the process, approaches and the data needs for prioritization for invasion policy and management, with the intention of informing and guiding efforts to address this target. Many prioritization schemes quantify impact and risk, from the pragmatic and action-focused to the data-demanding and science-based. Effective prioritization must consider not only invasive species and pathways (as mentioned in Aichi Target 9), but also which sites are most sensitive and susceptible to invasion (not made explicit in Aichi Target 9). Integrated prioritization across these foci may lead to future efficiencies in resource allocation for invasion management. Many countries face the challenge of prioritizing with little capacity and poor baseline data. We recommend a consultative, science-based process for prioritizing impacts based on species, pathways and sites, and outline the information needed by countries to achieve this. This should be integrated into a national process that incorporates a broad suite of social and economic criteria. Such a process is likely to be feasible for most countries.

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“…Introduction hotspots for these species, represented by regions with many ports nearby, include China, Europe, and the US Gulf Coast. In another paper, Bobeldyk et al (2015) used a large database to determine which regions are more invaded (hotspots of invasions) by invertebrates and fish in the US. A clear spatial pattern of invasions was found: freshwater invertebrates invade to a greater extent in the Laurentian Great lakes region, while fish invasions are more concentrated in Florida and the Southwest.…”

Section: Mixing Approachesmentioning

confidence: 99%

Aquatic invasive species: general trends in the literature and introduction to the special issue

et al. 2014

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Invasion rates are increasing worldwide and most are due to the actions of humans. Deliberate introductions, escapes, and hitchhiking with global commerce transport species to other continents. While most species fail to thrive or have minor impacts on their new ecosystems, the large number of introductions has led to numerous problems. Aquatic invasive species are particularly pervasive and may cause food web disruption, biodiversity loss, and economic harm. Biological invasions appear in an increasing number of publications in the aquatic and general ecology literature. This special issue of Hydrobiologia includes 31 papers on aquatic invasive species and the factors that influence their dispersal and success, along with their impacts. Ecosystems include freshwater ponds, lakes and reservoirs, small streams and large rivers, and coastal marine systems. Study regions occur in temperate, as well as less-studied tropical and sub-tropical regions of four different continents. We discuss the dynamics of invasive species research in the current literature and provide a brief overview of the contributions to this issue.

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Freshwater hotspots of biological invasion are a function of species–pathway interactions

Cited by 18 publications

References 34 publications

Interactions among multiple invasive animals

Interactions among multiple invasive animals

Prioritizing species, pathways, and sites to achieve conservation targets for biological invasion

Aquatic invasive species: general trends in the literature and introduction to the special issue

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