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Microrreservas em entomologia: uma abordagem à conservação de Euryphara contentei (Insecta, Hemiptera, Cicadoidea) em Portugal

Dublin Core

Título

Microrreservas em entomologia: uma abordagem à conservação de Euryphara contentei (Insecta, Hemiptera, Cicadoidea) em Portugal

Descrição

Artigo do Livro: 
Professor Carlos Almaça (1934-2010) - Estado da Arte em Áreas Científicas do Seu Interesse.

Editor

Maria Judite Alves

Alexandra Cartaxana

Alexandra Marçal Correia

Luis Filipe Lopes

Data

2014

Idioma

Português 

Resumo em inglês

Tipo

Artigo cientifico

Resumo

Abstract
This paper briefly summarizes multiple factors, mostly ecological and historical, responsible for the hot-spot character of Portugal  with respect to insect biodiversity and endemicity. It treats specifically the Cicadoidea, giving the distributional status of each of the thirteen recorded cicada species. Attention is called to the fact that most Portuguese cicadas nowadays have a scattered distribution, which in a few cases makes the species extremely vulnerable. A good example of this is Euryphara contentei, one of the rarest and most endangered cicadas present in Portugal and whose status is here discussed. Extensive field-work during the recent years recorded E. contentei  in just four small residual patches of vegetation, specifically in the areas of Beringel and Sousel, in the Alentejo province. Some of these refuges are small fragments of vegetation by roads or even narrow paths with grass and other herbaceous plants along their sides where this cicada was found. Limitations and eventual benefits of the so called entomological microreserves are briefly discussed and evaluated. On the other hand and having in mind the expected conservation benefits from the protection of such mosaics of vegetational patches, the authors suggest the urgent need to convert the four biotopes where E. contentei occurs into microreserves. Finally, emphasis is given to the fact that we are badly in need of further field-work and that management procedures to increase connectivity should be tested with respect of their conservation value, such as the implementation of ecological corridors and the translocation of specimens.

 

Resumo
Após referência à elevada diversidade entomológica do nosso território e aos factores que terão concorrido para a mesma, é feita uma análise geral das treze espécies de cicadídeos lusitânicos. É chamada a atenção de que praticamente todas estas espécies possuem hoje distribuições mais ou menos fragmentadas, dando-se ênfase à situação de Euryphara contentei, uma das mais raras e ameaçadas cigarras do nosso país. Em resultado de extensivo trabalho de campo conduzido durante os últimos anos, E. contentei apenas foi encontrada em quatro pequenas áreas residuais, nomeadamente junto a Beringel e a Sousel, no Alentejo. Alguns destes refúgios são pequenas manchas de vegetação adjacentes a bermas de estradas, ou mesmo das próprias bermas. É feita seguidamente uma breve discussão das limitações e eventuais benefícios das chamadas microrreservas entomológicas. Por outro lado, tendo em conta as vantagens que poderão advir da protecção dessas pequenas parcelas de vegetação, especialmente quando em mosaico, é feita a proposta da criação  de microrreservas nos quatro sítios onde E. contentei sobrevive. Finalmente, chama-se a atenção para a necessidade de prospecções no terreno mais extensas e detalhadas, bem como para a vantagem de se encetarem eventuais acções de gestão envolvendo o aumento da conectividade entre os quatro biótopos já identificados e outros a descobrir, nomeadamente através da implementação de corredores ecológicos e da própria translocação de exemplares.

Citação Bibliográfica

Quartau JA, PC Simões.2014. Microrreservas em entomologia: uma abordagem à conservação de Euryphara contentei (Insecta, Hemiptera, Cicadoidea) em Portuga. In: Professor Carlos Almaça (1934-2010) - Estado da Arte em Áreas Científicas do Seu Interesse. MJ Alves, A Cartaxana, AM Correia, LF Lopes (eds), Museu Nacional de História Natural e da Ciência, Lisboa, pp. 99-119.

Ficheiros

Citação

José Alberto Quartau, Paula Cristina Simões, “Microrreservas em entomologia: uma abordagem à conservação de Euryphara contentei (Insecta, Hemiptera, Cicadoidea) em Portugal,” MUHNAC Digital, acedido 25 de Setembro de 2017, http://digital.museus.ul.pt/items/show/3757.