Environmental risk assessment for invasive alien species: A case study of apple snails affecting ecosystem services in Europe

TY - JOUR

T1 - Environmental risk assessment for invasive alien species: A case study of apple snails affecting ecosystem services in Europe

AU - Gilioli, Gianni

AU - Schrader, Gritta

AU - Carlsson, Nils

AU - van Donk, Ellen

AU - van Leeuwen, Casper H.A.

AU - Martín, Pablo R.

AU - Pasquali, Sara

AU - Vilà, Montserrat

AU - Vos, Sybren

N1 - 6271, AqE; Data Archiving: data with first author in Italy

PY - 2017/7

Y1 - 2017/7

N2 - Abstract The assessment of the risk posed by invasive alien species (IAS) to the environment is a component of increasing importance for Pest Risk Analysis. Standardized and comprehensive procedures to assess their impacts on ecosystem services have been developed only recently. The invasive apple snails (Pomacea canaliculata and P. maculata) are used as a case study to demonstrate the application of an innovative procedure assessing the potential impact of these species on shallow freshwater ecosystems with aquatic macrophytes in Europe. The apple snail, Pomacea maculata, recently established in the Ebro delta in Spain resulting in a serious threat to rice production and wetlands, having also a high risk to spread to other European wetlands. Here, the population abundance of apple snails is regarded as the main driver of ecosystem change. The effects of ecosystem resistance, resilience and pest management on snail population abundance are estimated for the short (5 years) and the long (30 years) term. Expert judgment was used to evaluate the impacts on selected ecosystem services in a worst-case scenario. Our study shows that the combined effects of apple snails are estimated to have profound effects on the ecosystem services provided by shallow, macrophyte-dominated ecosystems in Europe. This case study illustrates that quantitative estimates of environmental impacts from different IAS are feasible and useful for decision-makers and invasive species managers that have to balance costs of control efforts against environmental and economic impacts of invasive species.

AB - Abstract The assessment of the risk posed by invasive alien species (IAS) to the environment is a component of increasing importance for Pest Risk Analysis. Standardized and comprehensive procedures to assess their impacts on ecosystem services have been developed only recently. The invasive apple snails (Pomacea canaliculata and P. maculata) are used as a case study to demonstrate the application of an innovative procedure assessing the potential impact of these species on shallow freshwater ecosystems with aquatic macrophytes in Europe. The apple snail, Pomacea maculata, recently established in the Ebro delta in Spain resulting in a serious threat to rice production and wetlands, having also a high risk to spread to other European wetlands. Here, the population abundance of apple snails is regarded as the main driver of ecosystem change. The effects of ecosystem resistance, resilience and pest management on snail population abundance are estimated for the short (5 years) and the long (30 years) term. Expert judgment was used to evaluate the impacts on selected ecosystem services in a worst-case scenario. Our study shows that the combined effects of apple snails are estimated to have profound effects on the ecosystem services provided by shallow, macrophyte-dominated ecosystems in Europe. This case study illustrates that quantitative estimates of environmental impacts from different IAS are feasible and useful for decision-makers and invasive species managers that have to balance costs of control efforts against environmental and economic impacts of invasive species.

KW - Risk management

KW - Pest risk analysis

KW - Pomacea spp.

KW - Plant pests

KW - Population abundance

KW - Wetlands

KW - international

U2 - 10.1016/j.eiar.2017.03.008

DO - 10.1016/j.eiar.2017.03.008

M3 - Article

SN - 0195-9255

VL - 65

SP - 1

EP - 11

JO - Environmental Impact Assessment Review

JF - Environmental Impact Assessment Review

ER -