Publications by authors named "Gallego-Fernandez J"

Article Synopsis
  • Coastal dunes are shaped by interactions between sand movement, landscape features, and plants, yet there's still uncertainty due to a lack of detailed studies integrating these factors.
  • This research examines the early development of new dunes over three years, focusing on how plant growth and sand accumulation relate to each other, especially in different environmental conditions.
  • Findings show that plant cover significantly affects sand accumulation patterns, with certain conditions promoting quicker colonization and growth, while the complexity of the dune system increases over time as these feedback processes evolve.
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Foredunes in arid coastal dune systems comprise nebkhas, which originate by interactions between vegetation and aeolian sedimentation. While continuous foredunes in temperate climates have been widely studied, knowledge of interactions between biotic and abiotic drivers in foredunes formed by nebkha is still scarce. With the aim of exploring variables affecting arid foredunes, a range of morphological, sedimentological, and vegetation characteristics were measured on a single nebkha formed by a Traganum moquinii plant located in the foredune of Caleta de Famara beach (Lanzarote, Canary Islands).

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This study examines the role of sediment supply in controlling the formation and the spatial patterns of nebkha, numbers and sizes, present in foredunes fronting coastal dunefields of the arid northwest African and the Canary Islands coasts. Sediment supply is estimated qualitatively and quantitatively by various measures, and the number and size of nebkhas are obtained on a range of beach-dune systems. In the case of the Canary Islands, LiDAR data and orthophotos with high spatial resolution (0.

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Oenothera drummondii is a native species from the coastal dunes of the Gulf of Mexico that has nowadays extended to coastal areas in temperate zones all over the world, its invasion becoming a significant problem locally. The species grows on back beach and incipient dunes, where it can suffer flooding by seawater, and sea spray. We were interested in knowing how salinity affects this species and if invasive populations present morphological or functional traits that would provide greater tolerance to salinity than native ones.

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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 non-native populations in a greenhouse.

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Article Synopsis
  • Explored the differences in photochemical efficiency, gas exchange, leaf water potential, pigment content, and free proline content between the invasive Oenothera drummondii and the native Achillea maritima in Mediterranean coastal dunes of southwest Spain during a full annual cycle.
  • O. drummondii showed significantly higher assimilation rates in spring and summer compared to A. maritima, despite the native species having better photochemical efficiency.
  • The study suggests that O. drummondii has superior water regulation and nutrient use efficiency, indicating a strategy for rapid growth that may contribute to its invasive success in resource-limited environments.
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Article Synopsis
  • - A new arid dune vulnerability index (ADVI) was created to assess the geomorphological vulnerability of beach-dune systems in arid regions, focusing on three main areas: susceptibility, exposure, and resilience, evaluated across 11 sites in the Canary Islands.
  • - These sites were classified based on their conservation status and management needs, with findings indicating that most sites exhibited low to moderate levels of susceptibility and exposure, while resilience remained high, except for one site showing critical vulnerability.
  • - The study highlights a gap in understanding geomorphological processes in arid foredunes, suggesting that ADVI can serve as a vital tool for environmental managers to better address vulnerability in these ecosystems.
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The genus Retama (Fabaceae) is widely distributed in the Mediterranean region. In the present study, pinitol (3-O-methyl-chiro-inositol), an anti-inflammatory and antidiabetic molecule, was isolated from aerial parts of R. monosperma, and its structure established on the basis of spectroscopic techniques (1D/2D NMR) and MS.

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Climate change (CC) and sea level rise (SLR) are phenomena that could have severe impacts on the distribution of coastal dune vegetation. To explore this we modeled the climatic niches of six coastal dunes plant species that grow along the shoreline of the Gulf of Mexico and the Yucatan Peninsula, and projected climatic niches to future potential distributions based on two CC scenarios and SLR projections. Our analyses suggest that distribution of coastal plants will be severely limited, and more so in the case of local endemics (Chamaecrista chamaecristoides, Palafoxia lindenii, Cakile edentula).

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