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New mitochondrial and nuclear evidences support recent demographic expansion an...

Copyright: © 2014 Rodrigues et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. ; Philaenus spumarius is a widespread insect species in the Holarctic region. Here, by focusing on the mtDNA gene COI but also using the COII ...

New records of exotic spiders and insects to the Azores, and new data on recent...

The introduction of exotic species in islands is recognized as a major threat to native biota and ecosystems. In this contribution we list thirteen widespread exotic invertebrate species (two Araneae, one Orthoptera, four Hemiptera, four Coleoptera and two Diptera) that were recorded from the Azorean Islands in the last few years for the first time. In addition, we list another ten invertebrate species (two Ara...

Extinction debt on oceanic islands

Copyright © 2010 The Authors. Journal compilation © 2010 Ecography. ; Habitat destruction is the leading cause of species extinctions. However, there is typically a time-lag between the reduction in habitat area and the eventual disappearance of the remnant populations. These “surviving but ultimately doomed” species represent an extinction debt. Calculating the magnitude of such future extinction events has b...

Canopy insect herbivores in the Azorean Laurisilva forests: key host plant spec...

Copyright © ECOGRAPHY 2005. ; This article explores patterns of insect herbivore distribution in the canopy of the Laurisilva forests on seven islands in the Azores archipelago. To our knowledge, this is one of the first extensive studied of this type in tree or shrub canopies of oceanic island ecosystems. One of the most frequently debated characteristics of such ecosystems is the likely prevalence of vague, ...

Ranking protected areas in the Azores using standardised sampling of soil epige...

Copyright © Springer 2005. ; Nineteen areas in seven of the nine Azorean islands were evaluated for species diversity and rarity based on soil epigean arthropods. Fifteen out of the 19 study areas are managed as Natural Forest Reserves and the remaining four were included due to their importance as indigenous forest cover. Four of the 19 areas are not included in the European Conservation network, NATURA 2000....

List of arthropods (Arthropoda)

Relação entre o número de espécies e o número de táxones de alto nível para a f...

Nesta contribuição pretendemos avaliar a aplicação dos modelos RESTAN, "Relação entre o número de Espécies e o número de Táxones de Alto Nível", à fauna de artrópodes de vários habitats das ilhas dos Açores. Utilizámos várias bases de dados recentemente obtidas baseadas em amostragens estandardizadas de artrópodes epígeos do solo em florestas de áreas protegidas, artrópodes fitófagos e predadores de pastagens s...

Ranking the Azorean Natural Forest Reserves for conservation using their endemi...

Copyright © 2000 Kluwer Academic Publishers. ; Endemic arthropods were used to evaluate the conservation value of the 16 Natural Forest Reserves (NFRs) of the Azores (Macaronesia). For each of the 280 known Azorean endemic species of arthropods, a rarity index was calculated, using distribution and abundance data obtained from the literature. In addition, several scoring indices were used to rank the 16 NFRs. ...

On the colour polymorphism of Philaenus spumarius (L.) (Homoptera, Cercopidae) ...

Copyright © 1997 Museu de Zoologia. ; On the colour polymorphism of Philaenus spumarius (L) (Homoptera, Cercopidae) in Portugal.- A total of 7,967 specimens (4,354 males and 3,613 females) of the meadow spittlebug Philaenus spumarius (L) collected in three different habitats at Fontanelas (Sintra) were analysed in terms of the colour morph frequencies. Eleven different morphs were encountered: populi (POP), ty...

Philaenus spumarius (Linnaeus, 1758) new to the Azores (Homoptera, Auchenorrhyn...

V Congresso Ibérico de Entomologia, Lisboa, 9 a 13 de Novembro de 1992. ; Philaenus spumarius (Linnaeus, 1758) (Homoptera, Auchenorrhyncha, Cercopidae), uma novidade faunística para os Açores - A cigarrinha espumosa (Philaenus spumarius), um cercopídeo notável pelo seu elevado grau de polimorfismo cromático, é dada pela primeira vez para os Açores, tendo sido encontrada em S. Miguel. Nos machos foram encontrad...