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Trabajo presentado en el II International Conference on Island Evolution, Ecology and Conservation, celebrado en Angra do Heroismo, Islas Azores (Portugal) del 18 al 22 de julio de 2016.
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Research Interests: Evolutionary Biology, Entomology, Taxonomy, Biology, Biodiversity, and 15 moreArachnology, Arthropoda, Arachnida, Canary Islands, Cave Biology, Entomologia y Aracnologia, Global Biodiversity Information Facility, Canary islands hotspot, Subterranean Biology, Arachnids, Type Specimen, Vulcanospeleology, Pseudoescorpiones, Macaronesia, and Taxonom
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The different characteristics of three lava tubes in Tenerife, Canary Islands, are analysed. Cueva del Viento-Sobrado, Cueva de Felipe Reventon and Cueva de los Roques were formed by an eruption of Pico Viejo volcano 27,000 years ago.... more
The different characteristics of three lava tubes in Tenerife, Canary Islands, are analysed. Cueva del Viento-Sobrado, Cueva de Felipe Reventon and Cueva de los Roques were formed by an eruption of Pico Viejo volcano 27,000 years ago. Geological features of this basaltic lava flow and special topographic aspects of its caves are explained. Ecological traits of lava tubes in general are considered, noting the importance for the cave-dwelling animal community of the plant roots that reach them. The present successional state and conservation status of the three lava tubes are also discussed. Two of the caves are among the world’s richest caves in troglobionts and are the most diverse of known volcanic caves. A list of the 50 troglobiont species found in these caves is provided, with information on their taxonomy and trophic roles and the existence of related epigean species. Finally, the possible alternative hypotheses for the origin of the troglobionts of Tenerife are commented.
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Trabajo presentado en el II International Conference on Island Evolution, Ecology and Conservation, celebrado en Angra do Heroismo, Islas Azores (Portugal) del 18 al 22 de julio de 2016.
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AimHabitat diversity has been linked to the diversity and structure of island communities, however, little is known about patterns and processes within habitats. Here we aim to determine the contributions of habitat type and inferred... more
AimHabitat diversity has been linked to the diversity and structure of island communities, however, little is known about patterns and processes within habitats. Here we aim to determine the contributions of habitat type and inferred dispersal frequency to the differences in taxonomic structure between assemblages in the same island habitat.LocationThe Macaronesian archipelagos (Azores, Madeira, the Canary Islands and Cabo Verde).TaxonSpiders (Araneae).MethodsWe established forest and dry habitat sites (each with five plots) on two islands per archipelago. We collected spiders using standardised sampling protocols. We tested the differences in beta diversity separately for each habitat and for each inferred category of ballooning (an aerial dispersal strategy) frequency across geographic scales through nested non‐parametric permutational multivariate analyses of variance. We then tested whether ballooning and habitat influenced heterogeneity in species composition (dispersion in bet...
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Research Interests: Evolutionary Biology, Zoology, Entomology, Geography, Taxonomy, and 15 moreBiology, Biodiversity, Arachnology, Arthropoda, Arachnida, Canary Islands, Cave Biology, Entomologia y Aracnologia, Global Biodiversity Information Facility, Canary islands hotspot, Subterranean Biology, Arachnids, Type Specimen, Vulcanospeleology, and Pseudoescorpiones
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Summary Wing polymorphism has been reported for several carabid beetles. Traditionally, a great number of ecological and evolutionary studies have focused on this peculiarity, which has implications on dispersal power. Research based on... more
Summary Wing polymorphism has been reported for several carabid beetles. Traditionally, a great number of ecological and evolutionary studies have focused on this peculiarity, which has implications on dispersal power. Research based on Orthomus berytensis specimens from two sampling areas of Tenerife (Canary Islands, Spain) has shown that this species exhibits a wing dimorphism, instead of being brachypterous. This makes O. berytensis the first Orthomus wing dimorphic species to date. Statistical differences in macropterous percentage between both sexes and localities were found. Also, a sexual dimorphism in elytra length and width was found, both being higher in females.
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Trabajo presentado en el II International Conference on Island Evolution, Ecology and Conservation, celebrado en Angra do Heroismo, Islas Azores (Portugal) del 18 al 22 de julio de 2016.
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Aim: Much research has focused on the separate and combined effects of habitat and geography on species communities, both in mainland and island ecosystems. However, few studies have looked into the differences among communities... more
Aim: Much research has focused on the separate and combined effects of habitat and geography on species communities, both in mainland and island ecosystems. However, few studies have looked into the differences among communities inhabiting different island habitats. Here we aim to determine the contributions of habitat filtering and dispersal to the differences in taxonomic structure of island communities across geographic scales. Location: Sixty plots in two habitats (forest and dry habitat) across eight islands of the Macaronesian archipelagos of the Azores, Madeira, Canary Islands and Cabo Verde. Taxon: Spiders (Araneae). Methods: We generated community data by using the optimised and standardised COBRA sampling protocols. We tested the differences in three beta diversity metrics ( βTotal, βReplacement and βRichness) for each habitat and dispersal category separately, across geographic scales through nested non-parametric PerMANOVA. We tested if dispersal and habitat influenced d...
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The habitat use and the phenology of the large grasshopperAcrostira euphorbiaeGarcía & Oromí endemic to La Palma (Canary Islands) are studied. This grasshopper is entirely dependent on the Canarian endemic shrubEuphorbia lamarckiiboth for... more
The habitat use and the phenology of the large grasshopperAcrostira euphorbiaeGarcía & Oromí endemic to La Palma (Canary Islands) are studied. This grasshopper is entirely dependent on the Canarian endemic shrubEuphorbia lamarckiiboth for food and to avoid predation. Adults stay on subapical branches during the day, probably to reduce the risk of predation, and climb up to the apex at night to feed. While females seem to ensure the genetic diversity of offspring by waiting for visits by different males, the latter have to move to guarantee their reproductive success. Monophagy in this species may be related to the year-round presence of tender shoots, and to the predator-repellent toxic latex found in the host plant. Unlike related species from continental areas, adults and nymphs ofA. euphorbiaeare present almost all year round, probably in adaptation to the particular climate of the islands. Nymphs are more abundant in winter, whenEuphorbialeaves are most available. However, adult...
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Research in Macaronesia has led to substantial advances in ecology, evolution and conservation biology. We review the scientific developments achieved in this region, and outline promising research avenues enhancing conservation. Some of... more
Research in Macaronesia has led to substantial advances in ecology, evolution and conservation biology. We review the scientific developments achieved in this region, and outline promising research avenues enhancing conservation. Some of these discoveries indicate that the Macaronesian flora and fauna are composed of rather young lineages, not Tertiary relicts, predominantly of European origin. Macaronesia also seems to be an important source region for back-colonisation of continental fringe regions on both sides of the Atlantic. This group of archipelagos (Azores, Madeira, Selvagens, Canary Islands, and Cabo Verde) has been crucial to learn about the particularities of macroecological patterns and interaction networks on islands, providing evidence for the development of the General Dynamic Model of oceanic island biogeography and subsequent updates. However, in addition to exceptionally high richness of endemic species, Macaronesia is also home to a growing number of threatened s...