Loading...
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.86 MB | Adobe PDF |
Advisor(s)
Abstract(s)
O pós-LIFE Berlengas teve início em 2019. Neste relatório são apresentadas as tarefas realizadas durante 2019-2024, nomeadamente, monitorização e conservação de aves marinhas, biossegurança, controlo de plantas invasoras e monitorização da flora. Os resultados alcançados em termos de investigação, voluntariado, apoio, visitação e ações de sensibilização são também apresentados. A informação recolhida anteriormente ao pós-LIFE foi compilada de forma a apresentar todas as séries temporais disponíveis. Em termos de aves marinhas reprodutoras, foram monitorizados os tamanhos populacionais, a produtividade, as taxas de sobrevivência individual, seguimento individual, a ocupação dos ninhos artificiais e outras atividades de conservação. As espécies-alvo foram o roque-de-castro Hydrobates castro, a cagarra Calonectris borealis, a galheta Gulosus aristotelis, a gaivota-d'asa-escura Larus fuscus, a gaivota-de-patas amarelas Larus michahellis e o airo Uria aalge. Foram testadas medidas de mitigação para reduzir a captura acidental de aves marinhas e a interação com as pesca durante 229 dias de pesca.
As aves terrestres reprodutoras e migradoras foram monitorizadas através de sessões de anilhagem e observações no terreno. Das 72 espécies observadas nas ilhas, foram anilhadas 20 espécies distintas. As medidas de biossegurança foram monitorizadas ao longo de cada ano na ilha da Berlenga. Não foram detetados sinais de roedores nas armadilhas A24 ©GoodNature nem nas caixas-rateiras. Apesar dos cinco alertas da potencial presença de roedores emitidos. As Berlengas continuam livres de roedores. No entanto foi feita a observação de fezes frescas de coelho-bravo Oryctolagus cuniculus em maio de 2024. Anualmente em abril, a vegetação foi monitorizada através de 75 quadrados de 2x2m. A cobertura e diversidade da vegetação aumentou ao longo dos anos, com 2024 a atingir o maior número de espécies registadas - 80. Foi monitorizada uma área de exclusão de gaivota-de-patas-amarelas durante a primavera. Foram observadas diferenças significativas entre as subáreas, com maiores abundâncias de Armeria berlengensis na subárea de exclusão, quando comparada com a área de não exclusão. Os novos rebentos de chorão Carpobrotus edulis foram removidos das áreas intervencionadas no âmbito do LIFE Berlengas, o que resultou num esforço anual de monitorização de 466 pessoas*hora. Desde 2019, foram publicados 16 artigos em revistas científicas.
Entre 2019 e 2024, 71 voluntários estiveram envolvidos nos trabalhos das Berlengas. A SPEA implementou 4 projetos para assegurar as tarefas do Pós-LIFE. A visitação na ilha da Berlenga foi monitorizada anualmente. As melhorias que decorreram incluíram a implementação da Capacidade de Carga Humana e a plataforma
de acesso à ilha da Berlenga. A câmara "ninho ao vivo" esteve ativa ao longo de todo o período, transmitindo imagens em tempo real a partir de um ninho de cagarra e de um ninho de roque-de-castro, em alternado. Foram desenvolvidas diversas ações para sensibilização e de educação ambiental pela SPEA e ICNF. Tais atividades tiveram como público-alvo os visitantes da ilha da Berlenga, os pescadores de Peniche, grupos internacionais, operadores marítimo-turísticos, professores e alunos das escolas locais.
The After-Life Berlengas started in 2019. Here, we report the tasks carried out during 2019-2024 on seabird monitoring and conservation, biosecurity, control of invasive plants and monitoring of flora. Results on the research, volunteers, support, visitation and awareness activities are also presented. Data from before After-LIFE were also collated in order to put together all available time-series. In terms of breeding seabirds, monitoring included population size, productivity, individual survival rates, individual tracking, occupancy of artificial nests and other conservation activities. Target species included Band-rumped Storm-petrel Hydrobates castro, Cory's Shearwater Calonectris borealis, European Shag Gulosus aristotelis, Lesser Black-backed Gull Larus fuscus, Yellow-legged Gull Larus michahellis and Common Murre Uria aalge. Mitigation measures to reduce seabird bycatch and fisheries interactions were tested during 229 fishing days. Breeding and migrant terrestrial birds were monitored through ringing sessions and on land observations. Of the 72 different species observed in the islands, individuals of 20 different species were ringed. The biosecurity measures were monitored across each year on Berlenga Island. No signs of rodents were recorded in A24 ©GoodNature traps or rat-boxes, although five alerts for the potential presence of rodents were made. Berlengas was still free of rodents. An observation of relatively fresh faeces of European Rabbit Oryctolagus cuniculus was made in May 2024. Every April, the vegetation was monitored using 75 plots of 2X2m to assess the removal of alien species. Plant coverage and diversity was increasing each year, with 2024 being the year with the highest number of species - 80. During Spring, an exclusion area for Yellow-legged Gulls was monitored. Significant differences were observed between exclusion subareas, with higher abundance of Armeria berlengensis on exclusion areas when compared with non-exclusion areas. All new sprouts of Hotentot Fig Carpobrotus edulis were removed from the areas intervened during LIFE Berlengas, resulting in an annual effort of 466 person*hour. 16 scientific papers were published in peer-reviewed journals from 2019 onwards. From 2019 to 2024, 71 volunteers were involved in Berlengas work. Four different projects were implemented by SPEA to secure the After-LIFE tasks. Tourist visitation to Berlenga Island was annual monitored. Improvements were made through the Human Carrying Capacity and the Berlenga Island access platform. The seabird live webcam was kept active along the entire period, broadcasting images alternatively between a Corys' Shearwater and a Band-rumped Storm-petrel nest. Several awareness and environmental education actions were carried out by SPEA and ICNF. Those activities targeted mostly visitors on Berlenga Island, fishermen from Peniche, international groups, tour operators, teachers and local students.
The After-Life Berlengas started in 2019. Here, we report the tasks carried out during 2019-2024 on seabird monitoring and conservation, biosecurity, control of invasive plants and monitoring of flora. Results on the research, volunteers, support, visitation and awareness activities are also presented. Data from before After-LIFE were also collated in order to put together all available time-series. In terms of breeding seabirds, monitoring included population size, productivity, individual survival rates, individual tracking, occupancy of artificial nests and other conservation activities. Target species included Band-rumped Storm-petrel Hydrobates castro, Cory's Shearwater Calonectris borealis, European Shag Gulosus aristotelis, Lesser Black-backed Gull Larus fuscus, Yellow-legged Gull Larus michahellis and Common Murre Uria aalge. Mitigation measures to reduce seabird bycatch and fisheries interactions were tested during 229 fishing days. Breeding and migrant terrestrial birds were monitored through ringing sessions and on land observations. Of the 72 different species observed in the islands, individuals of 20 different species were ringed. The biosecurity measures were monitored across each year on Berlenga Island. No signs of rodents were recorded in A24 ©GoodNature traps or rat-boxes, although five alerts for the potential presence of rodents were made. Berlengas was still free of rodents. An observation of relatively fresh faeces of European Rabbit Oryctolagus cuniculus was made in May 2024. Every April, the vegetation was monitored using 75 plots of 2X2m to assess the removal of alien species. Plant coverage and diversity was increasing each year, with 2024 being the year with the highest number of species - 80. During Spring, an exclusion area for Yellow-legged Gulls was monitored. Significant differences were observed between exclusion subareas, with higher abundance of Armeria berlengensis on exclusion areas when compared with non-exclusion areas. All new sprouts of Hotentot Fig Carpobrotus edulis were removed from the areas intervened during LIFE Berlengas, resulting in an annual effort of 466 person*hour. 16 scientific papers were published in peer-reviewed journals from 2019 onwards. From 2019 to 2024, 71 volunteers were involved in Berlengas work. Four different projects were implemented by SPEA to secure the After-LIFE tasks. Tourist visitation to Berlenga Island was annual monitored. Improvements were made through the Human Carrying Capacity and the Berlenga Island access platform. The seabird live webcam was kept active along the entire period, broadcasting images alternatively between a Corys' Shearwater and a Band-rumped Storm-petrel nest. Several awareness and environmental education actions were carried out by SPEA and ICNF. Those activities targeted mostly visitors on Berlenga Island, fishermen from Peniche, international groups, tour operators, teachers and local students.
Description
Keywords
Citation
Oliveira, N., A. Almeida, H, Alonso, A. Bouça, M. Costa, P. Crisóstomo, S. Leandro, R. N. Mendes, L. Morais, T. Mouga, E. Mourato, T. Nascimento, V. H. Paiva, C. Pereira da Silva & J. Andrade, 2025. 5-years after-Life Berlengas: Conservation efforts and monitoring in Berlengas Archipelago (2019-2024). Project LIFE Berlengas. SPEA - Portuguese Society for the Study of Birds, Lisbon (unpublished report).
Publisher
Collections
CC License
Without CC licence