Scientists' warning on invasive alien species

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2020, Volume and Issue: 95(6), P. 1511 - 1534

Published: June 25, 2020

ABSTRACT Biological invasions are a global consequence of an increasingly connected world and the rise in human population size. The numbers invasive alien species – subset that spread widely areas where they not native, affecting environment or livelihoods increasing. Synergies with other changes exacerbating current facilitating new ones, thereby escalating extent impacts invaders. Invasions have complex often immense long‐term direct indirect impacts. In many cases, such become apparent problematic only when invaders well established large ranges. Invasive break down biogeographic realms, affect native richness abundance, increase risk extinction, genetic composition populations, change animal behaviour, alter phylogenetic diversity across communities, modify trophic networks. Many also ecosystem functioning delivery services by altering nutrient contaminant cycling, hydrology, habitat structure, disturbance regimes. These biodiversity accelerating will further future. Scientific evidence has identified policy strategies to reduce future invasions, but these insufficiently implemented. For some nations, notably Australia New Zealand, biosecurity national priority. There been successes, as eradication rats cats on islands biological control weeds continental areas. However, countries, receive little attention. Improved international cooperation is crucial biodiversity, services, livelihoods. Countries can strengthen their regulations implement enforce more effective management should address interact invasions.

Language: Английский

---

More than “100 worst” alien species in Europe

Biological Invasions, Journal Year: 2017, Volume and Issue: 20(6), P. 1611 - 1621

Published: Dec. 18, 2017

"One hundred worst" lists of alien species the greatest concern proved useful for raising awareness risks and impacts biological invasions amongst general public, politicians stakeholders. All so far have been based on expert opinion primarily aimed at representativeness taxonomic habitat diversity rather than quantifying harm cause. We used generic impact scoring system (GISS) to rank 486 established in Europe from a wide range groups identify those with highest environmental socioeconomic impact. GISS assigns 12 categories impact, each quantified scale 0 (no detectable) 5 (the possible). ranked by their total sum scores number scores. also compared listing other expert-based "worst" invaders. propose list 149 species, comprising 54 plants, 49 invertebrates, 40 vertebrates 6 fungi. Among ranking are one bird (Branta canadensis), four mammals (Rattus norvegicus, Ondatra zibethicus, Cervus nippon, Muntiacus reevesi), crayfish (Procambarus clarkii), mite (Varroa destructor), plants (Acacia dealbata, Lantana camara, Pueraria lobata, Eichhornia crassipes). In contrast existing lists, GISS-based given here highlights some high that not represented any list. The provides an objective transparent method aid prioritization management according impacts, applicable across taxa habitats. Our can be justifying inclusion such as Union European Commission, fulfill Aichi target 9.

Language: Английский

---

Bioinvasion impacts on biodiversity, ecosystem services, and human health in the Mediterranean Sea

Aquatic Invasions, Journal Year: 2022, Volume and Issue: 17(3), P. 308 - 352

Published: Jan. 1, 2022

Biological invasions have become a defining feature of marine Mediterranean ecosystems with significant impacts on biodiversity, ecosystem services, and human health.We systematically reviewed the current knowledge biological in Sea.We screened relevant literature applied standardised framework that classifies mechanisms magnitude type evidence.Overall, 103 alien cryptogenic species were analysed, 59 which associated both negative positive impacts, 17 to only negative, 13 positive; no found for 14 species.Evidence most reported (52%) was medium strength, but 32% impact reports evidence weak, based solely expert judgement.Only 16% experimental studies.Our assessment allowed us create an inventory 88 from 16 different phyla moderate high impacts.The ten worst invasive terms biodiversity include six algae, two fishes, molluscs, green alga Caulerpa cylindracea ranking first.Negative prevailed over ones.Competition resources, creation novel habitat through engineering, predation primary effects.Most cases combined referred community-level modifications.Overall, more than this varied depending service.For health, recorded.Substantial variation among ecoregions taxonomic identity impacting species.There increases residence time.Holistic approaches research constitute way forward better understanding managing invasions.

Language: Английский

---

Managing conflict-generating invasive species in South Africa: Challenges and trade-offs

Bothalia, Journal Year: 2017, Volume and Issue: 47(2)

Published: March 31, 2017

Background: This paper reviewed the benefits and negative impacts of alien species that are currently listed in Alien Invasive Species Regulations National Environmental Management: Biodiversity Act (Act no 10 2004) certain not yet regulations for which conflicts interest complicate management. Objectives: Specifically, it identified conflict-generating species, evaluated causes driving forces these assessed how have affected Method: A simple scoring system was used to classify according their relative degree impacts. Conflict-generating were then further using an integrated cognitive hierarchy theory risk perception framework identify value systems (intrinsic economic) perceptions associated with each conflict. Results: total 552 assessed. Most classified as inconsequential (55%) or destructive (29%). Beneficial (10%) (6%) made a minor contribution. The majority (46%) conflict cases more than one both values perception. other based on intrinsic (40%) utilitarian (14%) systems. Conclusions: Conflicts inherently difficult resolve because authorities need balance needs different stakeholders while meeting mandate conserving environment, ecosystem services human well-being. uses highlight challenges trade-offs managing invasive South Africa.

Language: Английский

---

Assessing the environmental impacts of invasive alien plants: a review of assessment approaches

NeoBiota, Journal Year: 2019, Volume and Issue: 43, P. 69 - 99

Published: March 15, 2019

Assessing the impacts of alien plant species is a major task in invasion science and vitally important for supporting invasion-related policies. Since 1993, range assessment approaches have been developed to support decisions on introduction or management species. Here we review extent which assessments (27 approaches) appraised following: (i) different types environmental impacts, (ii) context dependence (iii) prospects successful management, (iv) transparency methods criteria, underlying values terminology. While nearly all covered effects, changes genetic diversity incorporation relevant impact parameters were less likely be included. Many considered by incorporating information about actual potential However, only few went further identified resources conservation concern might affected specific Only some acknowledged distinguishing negative from positive considering value resources. Several directly addressed feasibility whereas factors such as availability suitable rarely considered. Finally, disclosed, definitions value-laden controversial terms often lacking. We conclude that despite progress assessing manifold facets opportunities remain developing approaches. These can improve results their acceptance

Language: Английский

---

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Annals of Forest Science, Journal Year: 2017, Volume and Issue: 74(3)

Published: July 12, 2017

Language: Английский

---

The biological control of aquatic weeds in South Africa: Current status and future challenges

Bothalia, Journal Year: 2017, Volume and Issue: 47(2)

Published: March 31, 2017

Background: Aquatic ecosystems in South Africa are prone to invasion by several invasive alien aquatic weeds, most notably, Eichhornia crassipes (Mart.) Solms-Laub. (Pontederiaceae) (water hyacinth); Pistia stratiotes L. (Araceae) lettuce); Salvinia molesta D.S. Mitch. (Salviniaceae) (salvinia); Myriophyllum aquaticum (Vell. Conc.) Verd. (parrot’s feather); and Azolla filiculoides Lam. (Azollaceae) (red water fern). Objective: We review the biological control programme on waterweeds Africa. Results: Our shows significant reductions extent of invasions, a return biodiversity socio-economic benefits through use this method. These studies provide justification for widespread emerging freshwater weeds Conclusions: The long-term management vegetation relies correct implementation those species already country prevention other entering

Language: Английский

---

A global assessment of alien amphibian impacts in a formal framework

Diversity and Distributions, Journal Year: 2016, Volume and Issue: 22(9), P. 970 - 981

Published: July 7, 2016

Abstract Aims The environmental and socio‐economic impacts of alien species need to be quantified in a way that makes comparable. This allows managers prioritize their control or removal based on impact scores can easily interpreted. Here we aim score all known amphibians, compare them other taxonomic groups determine the magnitude ecological how these relate key traits. Location Global. Methods We used generic scoring system ( GISS ) assess impacts. These were compared previously assessed (mammals, birds, freshwater fish, invertebrates plants). For each scored, investigated relationship with variables (taxonomy, size, clutch habitat native range) using general linear mixed models. Results Our data show amphibians have similar groups, but comparatively fewer (41%) could scored available literature: < 7% had 71% literature for scoring. Concerning environment, birds lower than mammals. Regarding socio‐economy, only seven impacts, surprisingly serious. Bufonids pipids consistently higher amphibian taxa. Species larger body size more offspring Main conclusions Alien appear comparable taxa such as fish magnitude. However, there is insufficient majority particularly poorly represented.

Language: Английский

---

Linking traits of invasive plants with ecosystem services and disservices

Ecosystem Services, Journal Year: 2020, Volume and Issue: 42, P. 101072 - 101072

Published: Feb. 10, 2020

Language: Английский

---

The importance of assessing positive and beneficial impacts of alien species

NeoBiota, Journal Year: 2020, Volume and Issue: 62, P. 525 - 545

Published: Oct. 15, 2020

Extensive literature is available on the diversity and magnitude of impacts that alien species cause recipient systems. Alien may decrease or increase attributes ecosystems (e.g. total biomass diversity), thus causing negative positive environmental impacts. also negatively positively impact linked to local human communities number people involved in a given activity). Ethical societal values contribute define these socio-economic as deleterious beneficial. Whilst most focuses effects taxa, some recognise their beneficial activities. Impact assessment frameworks show similar tendency evaluate mainly impacts: only relatively few, not widely applied, incorporate species. Here, we provide summary assessing briefly discuss why they might have been less frequently cited applied than exclusively Then, review arguments invoke greater consideration caused by across invasion science literature. We collate describe from set 47 papers, grouping them two categories (value-free value-laden), which span theoretical, basic perspective an perspective. example cases associated with each argument. advocate development transparent evidence-based advance our scientific understanding dynamics better inform management prioritisation decisions. advise this should be achieved recognising underlying ethical intrinsic limitations. The evaluation through seen attempt outweigh discount taxa but rather opportunity additional information for scientists, managers policymakers.

Language: Английский

---