Project/scholarship details
- Project/scholarship ID
119255
- Reference
PTDC/BIA-BIC/119255/2010
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
3599-PPCDT
- Funding amount
99,000.00 €
- Start date
2012-03-21
- End date
2015-06-20
Documents
Drivers of extinction : the case of Azorean beetles
Terzopoulou, Sofia; Rigal, François; Whittaker, Robert J.; Borges, Paulo A. V.; Triantis, Kostas A.Oceanic islands host a disproportionately high fraction of endangered or recently extinct endemic species. We report on species extinctions among endemic Azorean beetles following 97% habitat loss since AD 1440. We infer extinctions from historical and contemporary records and examine the influence of three predictors: geographical range, habitat specialization and body size. Of 55 endemic beetle species invest...
Modeling directional spatio-temporal processes in island biogeography
Carvalho, José C.; Cardoso, Pedro; Rigal, François; Triantis, Kostas A.; Borges, Paulo A. V.A key challenge in island biogeography is to quantity the role of dispersal in shaping biodiversity patterns among the islands of a given archipelago. Here, we propose such a framework. Dispersal within oceanic archipelagos may be conceptualized as a spatio-temporal process dependent on: (1) the spatial distribution of islands, because the probability of successful dispersal is inversely related to the spatial ...
Comparative phylogeography of endemic Azorean arthropods
Parmakelis, Aristeidis; Rigal, François; Mourikis, Thanos; Balanika, Katerina; Terzopoulou, Sofia; Rego, Carla; Amorim, Isabel R.; Crespo, Luís C.BACKGROUND: For a remote oceanic archipelago of up to 8 Myr age, the Azores have a comparatively low level of endemism. We present an analysis of phylogeographic patterns of endemic Azorean island arthropods aimed at testing patterns of diversification in relation to the ontogeny of the archipelago, in order to distinguish between alternative models of evolutionary dynamics on islands. We collected individuals ...
Cave microbial community composition in oceanic islands : disentangling the eff...
Riquelme, Cristina; Rigal, François; Hathaway, Jennifer J. Marshall; Northup, Diana E.; Spilde, Michael N.; Borges, Paulo A. V.; Gabriel, RosalinaProcesses determining diversity and composition of bacterial communities in island volcanic caves are still poorly understood. Here, we characterized colored microbial mats in 14 volcanic caves from two oceanic islands of the Azores using 16S rRNA gene sequences. Factors determining community diversity (α) and composition (β) were explored, namely colored mats, caves and islands, as well as environmental and ch...
Using species abundance distribution models and diversity indices for biogeogra...
Fattorini, Simone; Rigal, François; Cardoso, Pedro; Borges, Paulo A. V.We examine whether Species Abundance Distribution models (SADs) and diversity indices can describe how species colonization status influences species community assembly on oceanic islands. Our hypothesis is that, because of the lack of source-sink dynamics at the archipelago scale, Single Island Endemics (SIEs), i.e. endemic species restricted to only one island, should be represented by few rare species and co...
The role of plant fidelity and land-use changes on island exotic and indigenous...
Florencio, Margarita; Rigal, François; Borges, Paulo A. V.; Cardoso, Pedro; Santos, Ana C.; Lobo, Jorge M.Understanding the processes that lead to successful invasions is essential for the management of exotic species. We aimed to assess the comparative relevance of habitat (both at local and at regional scale) and plant features on the species richness of local canopy spiders of both indigenous and exotic species. In an oceanic island, Azores archipelago, we collected spiders in 97 transects belonging to four habi...
Oceanic island biogeography through the lens of the General Dynamic Model : ass...
Borregaard, Michael K.; Amorim, Isabel R.; Borges, Paulo A. V.; Cabral, Juliano S.; Fernández-Palacios, José María; Field, Richard; Heaney, Lawrence R.The general dynamic model of oceanic island biogeography (GDM) has added a new dimension to theoretical island biogeography in recognizing that geological processes are key drivers of the evolutionary processes of diversification and extinction within remote islands. It provides a dynamic and essentially non-equilibrium framework generating novel predictions for emergent diversity properties of oceanic islands ...
Pollination services mapping and economic valuation from insect communities : a...
Picanço, Ana; Gil, Artur José Freire; Rigal, François; Borges, Paulo A. V.Insect pollinators provide vital ecosystem services through its maintenance of plant biological diversity and its role in food production. Indeed, adequate pollination services can increase the production and quality of fruit and vegetable crops. This service is currently challenged by land use intensification and expanding human population growth. Hence, this study aims: (1) to assess the pollination services ...
Impact of land-use change on flower-visiting insect communities on an oceanic i...
Picanço, Ana; Rigal, François; Matthews, Thomas J.; Cardoso, Pedro; Borges, Paulo A. V.1. Land-use change has profoundly impacted pollinator communities throughout the world. However, the processes through which it acts on pollinator diversity and composition are still poorly understood, especially in highly vulnerable island ecosystems. 2. In this study, we investigated the distribution, abundance, richness and composition of flower-visiting insects to assess their response to land-use change in...
Functional traits of indigenous and exotic ground-dwelling arthropods show cont...
Rigal, François; Cardoso, Pedro; Lobo, Jorge M.; Triantis, Kostas A.; Whittaker, Robert J.; Amorim, Isabel R.; Borges, Paulo A. V.AIM: Land-use change typically goes hand in hand with the introduction of exotic species, which mingle with indigenous species to form novel assemblages. Here, we compare the functional structure of indigenous and exotic elements of ground-dwelling arthropod assemblages across four land-uses of varying management intensity. LOCATION: Terceira Island (Azores, North Atlantic). METHODS: We used pitfall traps to sa...
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