Browsing by Subject "Posidonia oceanica"

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    Effects of Posidonia oceanica banquettes on intake, digestibility, nitrogen balance and metabolic profiles in sheep
    (Wiley; Society of Chemical Industry, 2017) Castillo, Cristina; Hernández, Joaquín; Sotillo Mesanza, Juan; Gutiérrez, Cándido; Montes, Ana; Ruiz Mantecón, Ángel; Medicina y Cirugía Animal
    BACKGROUND: Themarine plant Posidonia oceanica (L.) (PO) has been demonstrated in goats to be a source of fibre. The aim of the present studywas to assess the effects of introducing thismarine plant as a substitute for barley strawin the feed of mature ewes, assessing the effects of its addition on intake, digestibility and ruminal fermentation and on the ewes’ metabolic profiles (energy and protein). POwas used at 75 g day−1 per ewe (15% of the total forage), 150 g day−1 per ewe (30% of the total forage) and 300 g day−1 per ewe (60% of the total forage). RESULTS: Substitution of 15% of the forage with PO has no negative consequences on dry matter intake, final live weight and metabolic status in mature ewes; in addition, POmay improve the animal’s nitrogen utilisation. The upper limit of substitution was 30%,where only fewchangeswere noted withoutmetabolic consequences. Substitution of 60% impaired performance and affects tissue functions in the animal’s body. CONCLUSION: Moderate quantities of barley straw (between 75 and 150 g day−1 per ewe) can be replaced by PO in feed rations formature ewes.
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    Evolution of the Beaches in the Regional Park of Salinas and Arenales of San Pedro del Pinatar (Southeast of Spain) (1899–2019)
    (MDPI, 2021-03-25) Ibarra-Marinas, Daniel; Belmonte-Serrato, Francisco; Ballesteros-Pelegrín, Gustavo A.; García-Marín, Ramón; Geografía
    Coastal erosion is anissuewhich affects beaches all over the world and that signifies enormous economic and environmental losses. Classed as a slow phenomenon, the evolution of the coastline requires long-term analysis. In this study, old cartography and aerial photographs from various dates have been used to study the evolution of the coastline.The information has been processed with free software (QGIS) and for the calculation of sediment transport the Coastal Modeling System (SMC) software. The results show the accretion/erosion phenomena that occurred after the construction of the port in San Pedro del Pinatarin 1954 and which changed the coastal dynamics of a highly protected area. In some sectors, the beach has been reduced almost in its entirety, with retreat rates of up to −2.05m per year and a total area loss of 66,419.81 m2in Las Salinas beach and 76,891.13 m2 on Barraca Quemada beach.