Metaphors in Invasion Biology: Implications for Risk Assessment and Management of Non-Native Species

Verbrugge, Laura; Leuven, R.S.E.W.; Zwart, Hub

doi:10.1080/21550085.2016.1226234

Cited by 28 publications

(28 citation statements)

References 84 publications

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“…When there is a lack of certainty in the historical record (Crees and Turvey ), the perceived status of a species can depend on personal narrative (Verbrugge et al. ), and some nonnative species may become viewed as desirable (Schlaepfer et al. ).…”

Section: Discussionmentioning

confidence: 99%

Salmonid Conservation in an Invaded Lake: Changing Outcomes of Predator Removal with Introduction of Nonnative Prey

et al. 2019

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Culling of predators is a traditional tool in inland fisheriesmanagement. There is a long history of removing Northern Pike Esox lucius from certain Irish lakes in an attempt to enhance Brown Trout Salmo trutta fisheries. In recent decades, some of these systems have experienced ongoing warming, eutrophication, and the establishment of large populations of a nonnative cyprinid, the Roach Rutilus rutilus. Availability of this abundant new fish prey resource may have modified predator-prey interactions between Northern Pike and Brown Trout and consequently the potential efficacy of Northern Pike removal as a trout fisheries management tool. Statistical analysis of long-term fish survey data (1978-2015) and Northern Pike removal data (1980-2014) from Lough Sheelin, Ireland, indicated that the Northern Pike diet (stomach contents) changed significantly after the Roach invasion. There was a strong reduction in the proportion of Northern Pike stomachs containing trout, and the incidence of Roach in Northern Pike stomachs increased. Northern Pike removal was found to have a generally positive effect on abundance of Brown Trout in the following year, but this positive effect became neutral or negative at intermediate and peak levels of Roach abundance (>33rd percentile of annual survey CPUE). Brown Trout abundance also declined in years of high chlorophyll-a concentration. Removal of top predators may have unanticipated effects on target fish stocks in systems with multiple anthropogenic pressures.

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Section: Discussionmentioning

confidence: 99%

Salmonid Conservation in an Invaded Lake: Changing Outcomes of Predator Removal with Introduction of Nonnative Prey

et al. 2019

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“…Linguistic uncertainty occurs because verbal and written communication is frequently open to interpretation, and even exact language may be deciphered in different ways by different assessors (Verbrugge et al. ). A lack of unifying definitions within invasion biology potentially magnifies these issues (Verbrugge et al.…”

Section: Discussionmentioning

confidence: 99%

“…A lack of unifying definitions within invasion biology potentially magnifies these issues (Verbrugge et al. ). Linguistic uncertainty may be increased when risk assessments are applied internationally due to the requirement of a common language that may be non‐native to many contributors.…”

Section: Discussionmentioning

confidence: 99%

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Inconsistencies in the risk classification of alien species and implications for risk assessment in the European Union

et al. 2017

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Abstract. Invasive alien species (IAS) are species whose introduction or spread outside their native range threatens biological diversity, ecosystem functioning, economy, and/or public health. The recent European Union (EU) regulation on the management of IAS emphasizes the need for a consistent approach to alien species assessment that will underpin international measures for the early identification of newly introduced IAS followed by rapid action aimed at the prevention of introduction, spread, and negative impacts. The goals of the present study were (1) to present the risk classifications of 18 aquatic alien species for The Netherlands using the Invasive Species Environmental Impact Assessment protocol, (2) to compare these with available risk classifications made for countries spanning similar climatic and biogeographical regions to the EU, and (3) to provide explanations for inconsistencies between different risk classifications. Five species were classified as high risk: Carassius gibelio (Prussian carp), Cyprinus carpio (common carp), Sander lucioperca (pike-perch), Cabomba caroliniana (fanwort), and Dreissena rostriformis bugensis (quagga mussel). Of the 14 species with existing risk classifications for countries spanning similar climatic and biogeographical regions to the EU, all but two of the assessed species (C. gibelio and D. rostriformis bugensis) were classified inconsistently. Reasons for these inconsistencies are the application of different risk assessment schemes, application on a national rather than biogeographical scale, differences in the definition and application of criteria, differences in habitat availability, and uncertainties that are intrinsic to risk assessment methodologies. Approaches that increase transparency by highlighting these methodological aspects, normative choices, and uncertainties are vital to the legitimacy of any risk assessment method and will increase acceptance among decision makers, nature managers, and stakeholders.

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“…Historically overlooked, this pervasive type of uncertainty can be influential, problematic, and difficult to reduce (Regan et al 2002, Burgman 2005, Carey and Burgman 2008. This is particularly true in invasion biology where variation in definitions and their use have hindered progress in the field (Verbrugge et al 2016, Courchamp et al 2017.…”

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confidence: 99%

Reducing uncertainty in impact assessments for alien species

McGrannachan³

et al. 2020

Preprint

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Impact assessment is a widely used and cost-effective tool for prioritising invasive alien species.With the number of alien and invasive alien species expected to increase, reliance on impact assessment tools for the identification of species that pose the greatest threats will continue to grow. Given the importance of such assessments for management and resource allocation, it is critical to understand the uncertainty involved and what effect this may have on the outcome.Using an uncertainty typology and insects as a model taxon, we identified and classified the sources and types of uncertainty when performing impact assessments on alien species. We assessed 100 alien insect species across two rounds of assessments with each species independently assessed by two assessors. Agreement between assessors was relatively low for all three EICAT components (mechanism, severity, confidence) after the first round. For the second round, we revised guidelines and gave assessors access to each other's assessments which improved agreement by between 20-30%. Of the 12 potential reasons for assessment discrepancies identified a priori, 11 occurred. The most frequent sources (and types) of uncertainty (i.e. differences between assessment outcomes for the same species) were: incomplete information searches (systematic error), unclear mechanism and/or extent of impact (subjective judgment due to a lack of knowledge), and limitations of the assessment framework (context dependence). In response to these findings, we identify actions to reduce uncertainty in the impact assessment process, particularly for assessing speciose taxa with diverse life histories such as Insecta.Evidence of environmental impact was available for most insect species, and (of the non-random original subset of species assessed) 14 or 29% of those with evidence were identified as high impact species (with either 'Major' or 'Massive' impact). Although uncertainty in risk assessment, including impact assessments, can never be eliminated, identifying and communicating its source and variety is a first step toward its reduction and a more reliable assessment outcome, regardless of the taxa being assessed.

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Metaphors in Invasion Biology: Implications for Risk Assessment and Management of Non-Native Species

Cited by 28 publications

References 84 publications

Salmonid Conservation in an Invaded Lake: Changing Outcomes of Predator Removal with Introduction of Nonnative Prey

Salmonid Conservation in an Invaded Lake: Changing Outcomes of Predator Removal with Introduction of Nonnative Prey

Inconsistencies in the risk classification of alien species and implications for risk assessment in the European Union

Reducing uncertainty in impact assessments for alien species

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