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Cortaderia selloana invasion in Portugal and the impact of Project LIFE Stop Cortaderia in controlling it
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Abstract(s)
As espécies exóticas invasoras são um problema global com repercussões negativas no ambiente, na sociedade e na economia. Portugal é fortemente invadido por várias plantas invasoras e Cortaderia selloana, introduzida por motivos estéticos, é uma das mais difundidas ao longo das áreas do litoral centro-norte. A elevada produção de sementes e a baixa exigência em termos de nutrientes contribuem para o seu carácter invasor. O projeto ibérico LIFE+ Stop Cortaderia (2018 - 2022) incluiu entre os seus principais objetivos a gestão da invasão, com foco na sensibilização, campanhas de consciencialização e intervenções de controlo da espécie. No âmbito deste projeto, as entidades ambientais e de gestão do território em Portugal e Espanha foram convidadas a aderir à Estratégia transnacional de combate a Cortaderia selloana no Arco Atlântico (desenvolvida pelo projeto), como forma de sensibilizar, incentivar e facilitar a coordenação e o compromisso conjunto, e promover um maior sucesso no controlo da espécie. O presente trabalho tem como objetivo analisar, através de um inquérito por questionário, o que foi feito pelas entidades que aderiram à Estratégia em Portugal (e também por aquelas que foram convidadas mas ainda não aderiram). Pretendeu-se ainda reforçar o convite às entidades não aderentes para subscreverem a Estratégia e recolher sugestões para a sua melhoria. O Questionário foi enviado a 480 entidades e respondido por 98. A maioria das respostas foram de Municípios com áreas invadidas por C. selloana. As entidades demonstraram bastante conhecimento sobre as espécies de plantas invasoras em geral e elogiaram a qualidade do material técnico-científico desenvolvido pelo Projeto Stop Cortaderia sobre a espécie. No entanto, em geral, as entidades não demonstraram grande capacidade de controlo de C. selloana nas áreas invadidas ou de sensibilização para a mesma. As entidades aderentes tiveram um pouco mais de sucesso nas campanhas de divulgação e sensibilização, mas o sucesso no controlo das áreas invadidas foi limitado. Sugere-se uma melhor comunicação e acompanhamento entre o Projeto Stop Cortaderia e as entidades participantes, de forma a melhorar a capacidade das entidades de gerir a espécie e implementar acções mais eficazes no terreno
Invasive alien species are a global issue with negative repercussions on the environment, society, and economy. Portugal is heavily invaded by many invasive plants and Cortaderia selloana, introduced by aesthetic porpuses, is one of the most widespread along the central-north litoral areas. The high seed production and low nutrient requirements contribute for its invasiveness. The Iberian Project LIFE+ Stop Cortaderia (2018 - 2022) included amongst its main goals to manage the invasion, focusing on sensibilization, awareness campaigns, and interventions to control the species. As part of this project, environmental and land management entities in Portugal and Spain were invited to join the Transnational strategy to combat Cortaderia selloana in the Atlantic Arc (developed by the project) as a way to raise awareness, encourage and facilitate coordination and joint commitment, and promote more successful control of the species. The present work aims to analyse, by means of a questionnaire survey, what has been done by the entities that have joined the Strategy in Portugal (and also by those that have been invited but have not yet joined). It also aimed to reinforce the invitation for non-adherent entities to endorse the Strategy and further collect suggestions to improved it. The Questionnaire was sent to 480 entities and answered by 98. Most answers were from Municipalities with C. selloana invaded areas. The entities showed quite good knowledge about invasive plant species in general and praised the quality of the technical-scientific material developed by the Stop Cortaderia Project about the species. However, in general, the entities didn’t show much ability to control C. selloana in the invaded areas or to raise awareness about it. Endorsing entities were a bit more successful in dissemination and awareness campaigns but the success in controlling invaded areas was limited. Better communication and follow-up between the Stop Cortaderia Project and the participanting entities is suggested in order to improve the entities’ capacity of to manage the species and implement more effective actions on the ground.
Invasive alien species are a global issue with negative repercussions on the environment, society, and economy. Portugal is heavily invaded by many invasive plants and Cortaderia selloana, introduced by aesthetic porpuses, is one of the most widespread along the central-north litoral areas. The high seed production and low nutrient requirements contribute for its invasiveness. The Iberian Project LIFE+ Stop Cortaderia (2018 - 2022) included amongst its main goals to manage the invasion, focusing on sensibilization, awareness campaigns, and interventions to control the species. As part of this project, environmental and land management entities in Portugal and Spain were invited to join the Transnational strategy to combat Cortaderia selloana in the Atlantic Arc (developed by the project) as a way to raise awareness, encourage and facilitate coordination and joint commitment, and promote more successful control of the species. The present work aims to analyse, by means of a questionnaire survey, what has been done by the entities that have joined the Strategy in Portugal (and also by those that have been invited but have not yet joined). It also aimed to reinforce the invitation for non-adherent entities to endorse the Strategy and further collect suggestions to improved it. The Questionnaire was sent to 480 entities and answered by 98. Most answers were from Municipalities with C. selloana invaded areas. The entities showed quite good knowledge about invasive plant species in general and praised the quality of the technical-scientific material developed by the Stop Cortaderia Project about the species. However, in general, the entities didn’t show much ability to control C. selloana in the invaded areas or to raise awareness about it. Endorsing entities were a bit more successful in dissemination and awareness campaigns but the success in controlling invaded areas was limited. Better communication and follow-up between the Stop Cortaderia Project and the participanting entities is suggested in order to improve the entities’ capacity of to manage the species and implement more effective actions on the ground.
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Keywords
Biological invasion Management of invasive plants Cortaderia selloana Environmental and land management entities Questionnaires