1. Genetic diversity and relatedness in aquaculture and marina populations of the invasive tunicate Didemnum vexillum in the British Isles

   • M. B. Prentice
   • S. R. Vye
   • J. E. Ironside

   Invasion Note Open access 13 August 2021 Pages: 3613 - 3624

   

2. Fresh start after rough rides: understanding patterns of genetic differentiation upon human-mediated translocations

   • Melanie Jany Heckwolf
   • Teófilo Morim
   • Miguel Baltazar-Soares

   Review 23 July 2021 Pages: 3625 - 3639

   

3. Invasion by hawkweeds

   • Kris French

   Review 26 July 2021 Pages: 3641 - 3652

   

4. The dilemma of Guinea grass (Megathyrsus maximus): a valued pasture grass and a highly invasive species

   • Aaron C. Rhodes
   • Robert M. Plowes
   • Lawrence E. Gilbert

   Review 04 August 2021 Pages: 3653 - 3669

   

5. Anthropogenic factors overrule local abiotic variables in determining non-native plant invasions in mountains

   • Eduardo Fuentes-Lillo
   • Jonas J. Lembrechts
   • Aníbal Pauchard

   Original Paper 22 July 2021 Pages: 3671 - 3686

   

6. Combining citizen science and recreational hunters to monitor exotic ungulates and native wildlife in a protected area of northeastern Argentina

   • Gabriela Nicosia
   • Lucía I. Rodríguez-Planes
   • Ricardo E. Gürtler

   Original Paper 23 July 2021 Pages: 3687 - 3702

   

7. Exploring the impact of a non-native seed predator on the seed germination of its non-native host

   • Eva Horvat
   • Nina Sajna

   Original Paper 30 July 2021 Pages: 3703 - 3717

   

8. Adult cold tolerance and potential North American distribution of Myllocerus undecimpustulatus undatus (Coleoptera: Curculionidae)

   • Anita S. Neal
   • Rodrigo Diaz
   • Ronald D. Cave

   Original Paper Open access 31 July 2021 Pages: 3719 - 3731

   

9. Forest community structure and composition following containment treatments for the fungal pathogen oak wilt

   • Scott R. Abella
   • LaRae A. Sprow
   • Timothy A. Schetter

   Original Paper 04 August 2021 Pages: 3733 - 3747

   

10. Revealing novel interactions between oak and Tubakia species: evidence of the efficacy of the sentinel arboreta strategy

    • Carmen Morales-Rodríguez
    • Giorgia Bastianelli
    • Andrea Vannini

    Original Paper 05 August 2021 Pages: 3749 - 3765

    

11. Identifying management guidelines to control the invasive House Sparrow (Passer domesticus) within natural protected areas through the estimation of local colonization and extinction probabilities

    • Gonzalo A. Ramírez-Cruz
    • Rubén Ortega-Álvarez

    Original Paper 05 August 2021 Pages: 3767 - 3776

    

12. Raised by aliens: constant exposure to an invasive predator triggers morphological but not behavioural plasticity in a threatened species tadpoles

    • Andrea Melotto
    • Gentile Francesco Ficetola
    • Raoul Manenti

    Original Paper Open access 06 August 2021 Pages: 3777 - 3793

    

13. Do alien predators pose a particular risk to duck nests in Northern Europe? Results from an artificial nest experiment

    • Sari Holopainen
    • Veli-Matti Väänänen
    • Anthony D. Fox

    Original Paper Open access 07 August 2021 Pages: 3795 - 3807

    

14. Biological invasion risk assessment of Tuta absoluta: mechanistic versus correlative methods

    • Luigi Ponti
    • Andrew Paul Gutierrez
    • Markus Neteler

    Original Paper Open access 10 August 2021 Pages: 3809 - 3829

    

15. Has the introduction of two subspecies generated dispersal barriers among invasive possums in New Zealand?

    • Catriona D. Campbell
    • Phil Cowan
    • Stephen D. Sarre

    Original Paper Open access 11 August 2021 Pages: 3831 - 3845

    

16. Invading parasites: spillover of an alien nematode reduces survival in a native species

    • Claudia Romeo
    • Anna Pia Piscitelli
    • Lucas A. Wauters

    Original Paper Open access 12 August 2021 Pages: 3847 - 3857

    

17. Native anurans threatened by the alien tree Ligustrum lucidum in a seasonal subtropical forest

    • E. M. Segura
    • M. A. Giorgis
    • J. N. Lescano

    Original Paper 12 August 2021 Pages: 3859 - 3869

    

18. Disentangling the genetic origin of Heracleum persicum (Apiaceae) in Europe: multiple introductions from multiple source populations

    • Mohsen Falahati-Anbaran
    • Dilli P. Rijal
    • Hans K. Stenøien

    Original Paper 27 August 2021 Pages: 3871 - 3890

    

19. Simulating an invasion: unsealed water storage (rainwater tanks) and urban block design facilitate the spread of the dengue fever mosquito, Aedes aegypti, in Brisbane, Australia

    • Brendan J. Trewin
    • Hazel R. Parry
    • Nancy A. Schellhorn

    Original Paper 25 August 2021 Pages: 3891 - 3906

    

20. Optimizing the location of watercraft inspection stations to slow the spread of aquatic invasive species

    • Robert G. Haight
    • Amy C. Kinsley
    • Nicholas B. D. Phelps

    Original Paper Open access 31 August 2021 Pages: 3907 - 3919

    

21. Predicting non-native insect impact: focusing on the trees to see the forest

    • Ashley N. Schulz
    • Angela M. Mech
    • Kathryn A. Thomas

    Original Paper 31 August 2021 Pages: 3921 - 3936