Agustin Naranjo-Cigala

Agustin Naranjo-Cigala
Universidad de Las Palmas de Gran Canaria | ULPGC · Department of Geography

About

71
Publications
21,322
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858
Citations
Citations since 2016
18 Research Items
469 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080

Publications

Publications (71)
Presentation
Cloud forests, ecosystems experiencing from persistent to frequent low-level cloud cover, exhibit extremely high levels of biodiversity with large percentages of endemism. On islands, cloud forests are often relatively small isolated patches, which make them sensitive to climate change. To improve our understanding of cloud forest response to globa...
Article
The island of Lanzarote in the Canary Islands was first settled by people from northern Africa in the first millennium BC and then colonized by Spain in the late fifteenth century. This colonial legacy reflects an intensive land use driven by a European commodities market that experienced a series of boom-and-bust cycles. Although arid and seemingl...
Article
Aim Long‐term ecological data provide a stepped frame of island ecosystem transformation after successive waves of human colonization, essential to determine conservation and management baselines. However, the timing and ecological impact of initial human settlement on many islands is still poorly known. Here, we report analyses from a 4800‐year se...
Article
Oceanic islands remained free of humans until relatively recent times. On contact, humans encountered pristine environments with unique ecosystems and species highly vulnerable to novel impacts. In the course of rendering an island habitable, the new settlers transformed it through fire, deforestation, hunting and introduction of pests and weeds. T...
Article
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A popular article on the Juniper (Juniperus turbinata ssp. canariensis) woodlands of the Canary Islands, with information and photos of different landscapes, trees, plant species and birds associated to this type of forests. There are also detailed maps showing the distribution of such woodlands in all the islands. Published in Rincones del Atlánti...
Article
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Aim of the study: Although introduced tree species have been recognized as adversely affecting native ecosystems, conversely, some studies suggest they can facilitate recovery and promote the establishment of native plant communities. This study tests whether a native plant community is established under the closed canopies of an exotic species by...
Article
The nomenclature of the Canary Island endemic palm with red‐bluish fruits is reviewed. Phoenix senegalensis is neotypified; P. canariensis var. porphyrococca is lectotypified. “Fulchironia senegalensis” is a nomen nudum; P. menieri is a nomen superfluum.
Article
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Fire is a powerful force that has shaped forests for thousands of years. It also provokes widespread social concern due to possible economic damage, social effects, impact on homes and properties, and other social effects including fatalities. Regions with seasonal variations in aridity have a fire regime dependent on climate resulting from the rol...
Article
Oceanic islands are dynamic settings that often promote within‐island patterns of strong population differentiation. Species with high colonization abilities, however, are less likely to be affected by genetic barriers, but island size may impact on species genetic structure regardless of dispersal abilities. The aim of the present study was to ide...
Article
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Species monitoring is a valuable tool that can be used to answer a wide range of questions directly related to species conservation, management, and population improvement. We monitored the only remaining population of Lotus kunkelii on a monthly basis over 3 years to reveal important characteristics of the population that could help protect it. In...
Conference Paper
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In this work we generate the soils cartography of Terceira Island (Azores – Portugal) as referred to the morphological and physico-chemical data from a set of soil profilesdistributed in the island and representative of the main soils categories. The characterization of the physiography, geomorphology and ecosystems and different methods of spatial...
Poster
Full-text available
The species Lotus kunkelii (Esteve) Bramwell & D. H. Davis, is present in only one population in the ravine of Jinámar, at East of Gran Canaria. The habitat is included in a Site of Scientific Interest of Canarian ENP Network, in a very small coastal area in an halophyte-psammophyte ecosystem, highly disturbed by human action in many sectors of the...
Article
The general dynamic model (GDM) of oceanic island biogeography integrates rates of immigration, speciation and extinction in relation to a humped trajectory of island area, species carrying capacity and topographic complexity through time, based on a simplified island ontogeny. In practice, many islands have more complex ontogenies, featuring surfa...
Article
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Historically, fire has played a dominant role in shaping many forest plant communities. Mediterranean-type vegetation is one of the world’s major fire-prone biomes, with conifer forests among the most flammable ecosystems in the Mediterranean region. Prescribed fires are a powerful tool for reducing fire hazards by decreasing amounts of fuel. The...
Article
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Although the increase in species richness with increasing area is considered one of the few laws in ecology, the role of environmental and taxon-specific features in shaping species–area relationships (SARs) remains controversial. Using 421 land-plant floras covering continents, continental islands and oceanic islands, we investigate whether variat...
Article
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Prescribed fires are a powerful tool for reducing fire hazards by decreasing amounts of fuel. The main objective is to analyze the effects of prescribed burning on the understory vegetation composition as well as on the soil characteristics of a reforested stand of Pinus canariensis . The study attempts to identify the effects of the preburning tre...
Article
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Sorbus aria (L.) Crantz (common whitebeam) from the Canary Islands has not been characterised genetically. We analysed the genetic variability of 184 individuals belonging to seven natural populations of S. aria from the Canarian Archipelago and the Iberian Peninsula. Our main aims were to obtain essential information to enable the exploration of t...
Article
Knowledge of the germination characteristics of Pinus species can help in the understanding, prediction and management of the regeneration of pine forests. In the Canary Islands, several exotic pines (Pinus halepensis L. and Pinus pinea L.) were planted with Pinus canariensis Chr. Sm. Ex DC, the only native pine species, and there is now an interes...
Article
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In this study, we analysed the effect of a wildfire that occurred in 2007 in a well-preserved Canarian pine forest located in the ‘Integral Natural Reserve of Inagua’. This reserve has the highest level of protection of the Canarian Network of Natural Protected Areas. In 2009, we established in an area that was affected by fire in the central part...
Article
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In this study, we inquire into the effects of short-term goat grazing abandonment on plant species and functional composition, bare ground and net primary productivity (NPP) in two traditionally grazed pastures located in the Canarian Network of Natural Protected Areas and the Natura 2000 Network. In addition, we analyse soil chemical properties, b...
Chapter
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On an oceanic island, the positive relationship between livestock management and biodiversity conservation is not as clear as on the mainland. In the sensitive island’s ecosystems, introduced herbivores have been considered to cause devastating effects on vegetation, and be responsible for overgrazing, ecosystem degradation, and biodiversity loss....
Article
Understanding speciation on oceanic islands is a major topic in current research on island biogeography. Within this context, it is not an easy task to differentiate between the influence of elevation as an indicator for habitat diversity and island age as an indicator for the time available for diversification. One reason for this is that erosion...
Book
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La biodiversidad es esencial para la supervivencia del ser humano en la Tierra. Del buen funcionamiento de los ecosistemas acuáticos y terrestres españoles y de la biodiversidad que albergan, depende en buena medida el futuro social, cultural y económico de la población, ya que constituyen el capital natural de nuestro país. El bienestar humano en...
Article
Aim Explanations of biogeographic diversity patterns have emphasized the role of large-scale processes that determine species pools, whereas explanations of local patterns have not. We address the hypothesis that local diversity patterns are also primarily dependent on the size of the available species pools, which are expected to be large when the...
Article
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The thermophilous woodlands. The Mediterranean appearance of the Canary Islands. The Canarian thermophilous woodlands constitute a young ecosystem, still under construction, closely linked with the onset of the Mediterranean climate type, characterized by their arid summers and wet winters, which took place some 2.5 million years ago. These woodlan...
Chapter
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Pinus canariensis Chr. Sm. Ex DC in Buch is an endemic conifer tree of the Canary Islands archipelago and its stands occupied much larger areas in the past. Plantation programs have been very common in the Canary Islands since the 1940s. The main objective of the plantations analyzed in this study is to restore the canarian pine forest which was he...
Article
The main objective of this study was to analyze if Acacia farnesiana, an introduced shrub from North and Central American tropics is spreading from areas in which it was introduced, and also to determine which animals operate as vectors for the shrub dispersion in the study area. The study site was located in southern Gran Canaria, one of the islan...
Chapter
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El presente proyecto se centra en aplicar técnicas de biología molecular, demográficas y de biología re-productiva en cuatro endemismos canarios amenazados que se encuentran total o parcialmente localizados en los parques nacionales de Canarias: Silene nocteolens Webb & Berthel. (Parque Nacional del Teide, Tenerife); Ilex perado ssp. lopezlilloi (G...
Article
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The question of how plant species foreign to a biological system can disperse and turn into an environmental problem is very important for the control of the invasive plant species, especially for insular ecosystems, which are more susceptible to biological invasions. We analyzed the role played by the European rabbit (Oryctolagus cuniculus) in the...
Article
Full-text available
The Acacia farnesiana shrub species is native to Central America, but naturalized and considered an invasive species in many tropical and subtropical parts of the world. This study examines some of the characteristics of an Acacia farnesiana allochthonous population in the Canary Islands. When an alien species colonizes a new environment, it intera...
Article
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Myrica rivas-martinezii is a critically endangered endemic of the laurel forest of the Canary Islands and co-occurs very close to M. faya. Some authors suggest that M. rivas-martinezii and M. faya are two morphs of the same species, so molecular markers were used to estimate the levels and structuring of genetic variation within and among natural p...
Article
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Este libro pretende contribuir a rellenar el vacío existente en la literatura científico-divulgativa acerca de los bosques termófilos de Canarias, sin duda el ecosistema del archipiélago peor conservado y menos conocido para el gran público. Magníficamente ilustrada, la obra comienza con una introducción a la distribución, riqueza, origen, historia...
Article
Roadside plant communities were studied along two roads following an altitudinal gradient in Gran Canaria and Tenerife (Canary Islands). Our aim was to investigate variation in plant species richness, particularly of the alien flora, along a gradient from coastal shrubland to summit vegetation (1950 m a.s.l. in Gran Canaria, 2300 m in Tenerife) in...
Conference Paper
Full-text available
Wildfire in the Pinus canariensis forest of Tenerife and Gran Canaria are of ecological significance, but has been little studied. Fire is considered an ecological catastrophe that should be prevented. The present study was designed to report the effects of fire effects on understory species composition as a means to evaluate this premise. Due to t...
Article
The main objective of our study is to determine whether regeneration of Pinus pinea (an exotic species) is spreading within a Pinus canariensis (native species) stand. The study area is located in the Natural Park of Tamadaba, 1400 m asl., in the NW of Gran Canaria Island (Canary Islands). Stems and regeneration of P. canariensis and P. pinea were...
Chapter
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Se conocen actualmente para esta especie siete poblaciones con áreas de ocupación muy limitadas. Todas sufren algún grado de presión zooantrópica, especialmente la acción del pastoreo y del ganado cabrío residual y guanil.
Article
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Este trabajo proporciona una nueva cita para la isla de Gran Canaria del taxón Cakile maritima Scop. subsp. maritima y se hace referencia a su distribución actual y potencial. Asimismo, se lleva a cabo una reflexión acerca de la clase fitosociológica Cakiletea maritimae y su presencia en Canarias. ISSN 0210-945X
Article
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Se describe la nueva asociación Echio decaisnei-Retametum rhodorhizoidis, que comprende los retamares infra-termomediterráneos semiárido-superior - secos de Retama rhodorhizoides de Gran Canaria (islas Canarias). ISSN 0210-945X
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Anuario de la Facultad de Geografía e Historia, ISSN 1133-598X, Nº 3, 1997-1998, pags. 303-314