GBA - Artigos em Revistas Nacionais / Articles in National Journals
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Browsing GBA - Artigos em Revistas Nacionais / Articles in National Journals by Subject "Arthropods"
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- Arthropod diversity patterns in three coastal marshes in Terceira Island (Azores)Publication . Borges, Paulo A. V.; Pimentel, C.; Brito, Mariana dos Reis; Borda-de-Água, Luís; Gabriel, RosalinaThe coastal wet areas of Praia da Vitória (Terceira, Azores) were investigated to describe the ground and aerial (herbaceous and canopy) arthropod communities by comparing patterns of species composition, abundance and diversity. Three wet areas were studied: Paul da Praia da Vitória (PPV), Paul do Belo Jardim (PBJ) and Paul da Pedreira do Cabo da Praia (PPCP). A standardized protocol (based on the COBRA protocol) was performed with day and night sampling of arthropods with a total of 56 samples per site. Common diversity metrics (Hill series) were calculated and abundance patterns were investigated using species abundance distributions (SAD). All investigated communities were dominated by native non-endemic and exotic species; only seven out of the 132 endemic arthropod species and subspecies existing in Terceira Island were found in the area. The logseries described well the communities, with a prevalence of rare species. The three sites seem to work as a complementary network of wet areas with specific arthropod communities possibly related to their specific features. However, Paul do Belo Jardim (PBJ) performed better for many of the investigated indicators, and two IUCN endangered species, the true weevil Drouetius oceanicus oceanicus and the Azorean cone-head grasshopper (Conocephalus chavesi) are relatively abundant there. Due to habitat changes that occurred between 2006 and 2010 in PPV, only one of the three most abundant ground-beetles recorded in 1991-1993 and 2003 was found but only after some additional sampling in a small remnant of the original habitat.
- Arthropods and other Biota associated with the Azorean Trees and Shrubs : Juniperus brevifoliaPublication . Nunes, Rui; Gabriel, Rosalina; Elias, Rui B.; Rigal, François; Borges, Paulo A. V.This work aims to characterize the arthropods and other biota (lichens, bryophytes, vascular plants and birds) associated with the Azorean endemic tree, Juniperus brevifolia. This is the first of a series of publications that will (i) provide a comprehensive list of all the biota associated with the main Azorean endemic trees and shrubs, (ii) describe in detail the diver-sity, abundance and spatial patterns of canopy arthropods, and (iii) whenever possible, to extend biodiversity assessments to communities of bryophytes, lichens, vascular plants and vertebrates. We use standardized sampled data from BALA project for canopy arthropods and for the remaining taxa we surveyed literature data and the Herbarium of University of Azores. Juniperus brevifolia occurs in a wide range of elevation belts in Azores and accommodates a remarkable large number of taxa: besides canopy arthropods (161 species) it is also an important substrate to other vascular species (six species), bryophytes (105 species), lichens (106 species) and also birds (four species). In addition, the species richness and particularly the abundance of endemics are dominant, and the number of conservation concern species for bryophytes is noteworthy (30 out of 70). The complexity of the tree and the high diversity of micro-habitats created the conditions for epiphytic species to easily colonize all parts of the tree, from the bottom, trunk and branches. The communities associated with the Azorean cedar are consequently of a high conservation value and should be further investigated in their ecological dynamics.
- Seasonal dynamics of arthropods in the humid native forests of Terceira Island (Azores)Publication . Borges, Paulo A. V.; Pimentel, Reinaldo M. S.; Carvalho, Rui; Nunes, Rui; Wallon, Sophie; Ros-Prieto, A.This work aims to provide a first detailed description of the results obtained in a seasonal abundance study of arthropods in the native pristine humid forest from Terceira Island (Azores). Ten sites were sampled during four years with SLAM (Sea, Land, and Air Malaise) traps targeting several arthropod taxa with good dispersal abilities as well as epigean species crawling into the trap. Samples were taken every three months in nine sites between 2012 and 2016 and monthly in one of the sites between 2014 and 2015. A total of 147 arthropod species and morphospecies were sampled mostly belonging to Hemiptera, Araneae and Coleoptera. Four endemic species, the tree lace-hopper Cixius azoterceirae, the capsid bug Pinalitus oromii, the bristletail Trigoniophthalmus borgesi and a morphospecies of Aleyrodidae accounted for 50% of all adult specimens. Most species peak in abundance in summer, but monthly data allowed the identification of other seasonal patterns.