GALLEGO FERNÁNDEZ , Juan Bautista

Se ha estudiado el patrón biogeográfico de comunidades de plantas leñosas tras el cese de la perturbación humana en la Sierra de Grazalema. Se han muestreado 137 transectos de vegetación de diferentes comunidades de matorral mediterráneo, donde se han identificado 74 especies. Se ha analizado en cada transecto la riqueza de especies y la...

Se ha estudiado la presencia de especies leñosas de matorral mediterráneo en suelos de pH ácido y básico en la Sierra de Grazalema. Se han muestreado 137 transectos de vegetación de diferentes comunidades de matorral mediterráneo, donde se han identificado 74 especies. Las más frecuentes fueron Phlomis purpurea. Cistus albidus, Quercus...

El estudio que abordamos sobre la vegetación de matorral mediterráneo de la Sierra de Grazalema pretende conocer los tipos y características de los matorrales que se desarrollan en área de media montaña, donde la acción humana ha sido más o menos constante a lo largo de siglos. Este intervención sobre la vegetación natural ha estado orientada a...

Se abordan los criterios ecológicos que deben regir en la planificación y ejecución de la restauración de las marismas mareales degradadas por la actividad humana en el Estuario del Guadalquivir. Se presenta un ejemplo de restauración en la margen izquierda del Estuario, Marismas de la Algaida, a partir del cual extraer conclusiones sobre los...

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The mating system of plants widely distributed can change in native range but also in non-native habitats. Oenothera drummondii, native to the coastal dunes of the Gulf of Mexico, has been introduced to Europe, Africa, Asia and Oceania. Hand self-and cross-pollination were performed to determine compatibility and to compare fruit set, fruit...

The objective of this study was to determine whether endozoochory contributes to the dispersal and colonization of plant species in recently formed coastal dunes. At least 5.7% of species present in the study area are being dispersed by wild rabbits (Oryctolagus cuniculus L.). Most dispersed species are perennial herbs with small seeds size....

La Flecha Litoral de El Rompido es una formación sedimentaria re- lativamente joven incluida en un área protegida y acoge, junto con Doñana, uno de los sistemas dunares mejor conservados de Andalucía. El objetivo del presente estu- dio fue el conocimiento y análisis de la flora vascular presente en el área desde una perspectiva taxonómica,...

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In coastal dunes, shrub encroachment disrupts natural disturbance, and reduces habitat heterogeneity and species composition. In this paper, we implemented a pilot scale trial aimed at restoring coastal dunes affected by the encroachment by the shrub Retama monosperma (hereinafter Retama) as well as strengthening the populations of Thymus...

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Coastal dunes are complex landforms whose morphology results from various interactions between biotic and abiotic factors. Here, we explore the longshore variability of the morphological features, plant community distribution and accumulation patterns of a dune segment (1.4 km-long) located at the downdrift end of a sandy peninsula in the Ria...

Plant invasions have a huge impact on the health of ecosystems and human well-being. The invasion risk varies with the introduction pathway, the propagule pressure, and the genetic diversity of the founding population. We performed a systematic review and meta-analysis of 30 studies reporting the genetic diversity of 31 plant species in their...

Invasive plants can spread over climatically diverse areas. We explore the effects of drought on gas exchange and water relations on the invasive dune species Oenothera drummondii, using plants from four populations with different rainfall and temperatures regimes. Plant material was obtained germinating plants from one native and three...

Aims: This paper examines the water dynamics of a coastal dune plant community, addressing spatial and seasonal variations. We aimed to detect the patterns of water use by plants at the community level according to their distribution across a coastal dune gradient from beach to inland. Methods: Five sites were established: upper beach,...

Uso estacional del hábitat por parte del conejo de monte (Oryctolagus cuniculus) en un sistema de dunas costeras en el suroeste de España. _ Estudiamos el uso del hábitat por parte del conejo de monte silvestre (Oryctolagus cuniculus) en un sistema de dunas costeras del suroeste de la península ibérica. Nuestros objetivos fueron definir la...

Expansion of invasive species inducing sands stabilization is becoming an important ecological problem in coastal dunes in some parts of the world. Retama monosperma, an endemic to coasts of SE Spain and NE of Morocco, late-colonizing shrub occurring in sandy coastal areas, was planted along the coast of SW Spain during the 20th century to...

Oenothera drummondii is a coastal dunes plant species from the North American continent that has affected the natural structure and dynamics of Spanish, Israeli, and Chinese shores as an invasive species. In South Africa, Australia, New Zealand, and France, it is reported as a naturalized species. Ecological niche and species distribution...

Around the world, population growth, land use changes and coastal infrastructure have modified coastlines. In many cases these actions have induced intense degradation and loss of the ecosystems there. Sandy beaches and coastal dunes are amongst the most threatened features. In Mexico, coastal dunes in the state of Nayarit, on the Pacific, have...

One of the major threats to the diversity of coastal dunes is the expansion of invasive species, such as Oenothera drummondii subsp. drummondii (Onagraceae). In southwestern Spain, we studied the impact of this American invasive on community structure and composition along a beach-dune gradient (beach, foredune, and inland dunes). Differences...

Beach evening-primrose (Oenothera drummondii subsp. drummondii) is a perennial herb native to the coastal dunes of the Gulf of Mexico and southeastern USA. During the last century, the species was unintentionally introduced into coastal dune systems around the world. The purpose of this study was to explore the means of dispersal of this...