Revista de Gestão Costeira Integrada
Volume 14, Número 2, Junho 2014, Páginas 185-197

DOI: 10.5894/rgci467
* Submission: 30 December 2013; Evaluation: 5 February 2014; Reception of revised manuscript: 11 February 2014; Accepted: 13 February 2014; Available on-line: 19 February 2014
** Portuguese Title, Abstract and captions by Helena Calado on behalf of the Journal Editorial Board

Assessing small island prioritisation using species rarity: the tenebrionid beetles of Italy *

Avaliação de Prioridades de Conservação em pequenas ilhas, usando a raridade de espécies: os escaravelhos tenebriónidos de Itália **

Simone Fattorini ^{@, 1}, Leonardo Dapporto ²

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@ - Corresponding author: simone_fattorini@virgilio.it
1 - Azorean Biodiversity Group (GBA, CITA-A) and Platform for Enhancing Ecological Research & Sustainability (PEERS), Departamento de Ciências Agrárias, Universidade dos Açores, Rua Capitão João d´Ávila, Pico da Urze, 9700-042, Angra do Heroísmo, Terceira, Azores, Portugal.
2 - Centre for Ecology, Environment and Conservation, Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, OX3 0BP, UK.

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ABSTRACT
We investigated conservation priorities of Italian small islands on the basis of tenebrionid species (Coleoptera Tenebrionidae) which are insects typically associated with coastal environments. Firstly, we estimated vulnerability of tenebrionid island communities in four different ways using their inter-island distribution, their overall rarity, their biogeographical characterization and the coastal perimeter of the occupied islands. Then, these four sets of vulnerability values were used to rank biotopes using the Biodiversity Conservation Concern index, BCC, which reflects the average rarity score of the species present in a site, and the Biodiversity Conservation Weight index, BCW, which reflects the sum of rarity scores of the same species assemblage. We found that most of the studied islands have been recovered as having some conservation value, but the Tuscan Islands, Ustica, Pantelleria and the Pelagie Islands were found to have highest priority.

Keywords:Conservation Planning; Insects; Island Biogeography; Italy; Mediterranean.

RESUMO
Neste artigo, a Investigação centra-se nas prioridades de Conservação em pequenas ilhas em Itália, com base em estudos de espécies Tenebrionidae (Coleoptera Tenebrionidae), insetos usualmente associados a ambientes costeiros. Em primeiro lugar, estimou se a vulnerabilidade das comunidades Tenebrionidae insulares de quatro formas diferentes: usando a sua distribuição inter-ilha; a sua raridade total; a caracterização biogeográfica; e o perímetro costeiro das ilhas ocupadas. Seguidamente, estas quatros conjuntos de dados de vulnerabilidade, foram usados para ordenar os biótopos de acordo com o Biodiversity Conservation Concern index, BCC, que reflete a raridade média das espécies presentes num sitio e o Biodiversity Conservation Weight index, BCW, que reflete a soma dos valores de raridade para algumas espécies da composição. Conclui-se que muitos estudos em pequenas ilhas são recuperados como tendo algum valor de conservação, mas as ilhas Tuscanas, Ustica, Pantelleria e Pelagie apresentam os mais altos valores de prioridade.

Palavras-chave: Planeamento e Conservação; Insetos; Biogeografia Insular; Itália; Mediterrâneo.

 

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