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Most of the content on this site (text, photographs and other images) is the work of the authors or are the results of their research (see references). For additional material, we’d like to acknowledge the following collaborators and their contributions:


António Pestana (Designer) – Ageratina adenophora

Albano Figueiredo (Faculdade de Letras da Universidade de Coimbra) – Clethra arborea

Cristina Medeiros (Parque Natural da Madeira, Divisão de Conservação da Natureza) – Ageratina adenophora

Direção Regional dos Recursos Florestais (Açores) – Gunnera tinctoriaHedychium gardnerianum

Francisco Carrapiço (Centro de Biologia Ambiental, Universidade de Lisboa) – Azolla filiculoides

João Neves – Spartina densiflora

Lísia Lopes (Universidade de Aveiro, Departamento de Biologia) – Azolla filiculoides, Eichhornia crassipes, Myriophyllum aquaticum, Cotula coronopifolia

Pedro Arsénio (Instituto Superior de Agronomia) – Cotula coronopifolia

Manuel José Jesus (Parque Natural da Madeira)  – Ageratina adenophora

Ruben Heleno (Centre of Funcional Ecology, University of Coimbra) – Hedychium gardnerianum

Silvia Castro (Centre of Funcional Ecology, University of Coimbra) – Oxalis pes-caprae


Information sharing:

Francisco Caetano (Teacher of Forestry Engineering) – he is the author of parts of the information regarding the control of invasive plants (Menu “How to Control”).

The information provided in the menu “News> invasives in the media” was compiled from other sources (see references)


Graphic design and diagrams:

The illustrations and diagrams in illustrated glossary were designed by Espectro Publicidade e Comunicação.


Smartphone Apps design and sightings map:




Any assignment or publication totally or partially based on information from this website must cite “Invasive Plants in Portugal” as the source, as shown below.


Content accuracy:

While every reasonable effort is made to ensure that the information provided on this site is accurate and updated, no guarantees for the timeliness or accuracy of information are made.

If you find incorrect, out-of-date or incomplete information, please contact us: invader@uc.pt


Citing this webpage:

To quote this webpage, please use:

Invasive Plants in Portugal (http://invasoras.pt/en). Accessed XX/XX/20XX.


To quote specific data on the webpage, please use (for example):

Invasive Plants in Portugal (2013) Acacia dealbata. Available at http://invasoras.pt/gallery/acacia-dealbata-en/. Accessed XX/XX/20XX.

(where “Invasive Plants in Portugal” refers to the Project team of “Plantas Invasoras: uma ameaça vinda de fora” (Media Ciência N.º 16905), involved in the development of this webpage).



The project “Plantas Invasoras: uma ameaça vinda de fora” (Invasive Plants: a threat from the outside) is co-financed by UE/FEDER, through QREN (Programa Factores de Competitividade— COMPETE) and by national funding through Ciência Viva — Agência Nacional para a Cultura Científica e Tecnológica (National agency for Science and Technology) [Ref: n.º 16905].