RT info:eu-repo/semantics/masterThesis
T1 Patrones temporales y procesos de las poblaciones de Gongolaria abies-marina en la isla de Gran Canaria (Atlántico este)
A1 Cabana Gandiaga, Julián
A2 Máster Universitario en Biología Marina: Biodiversidad y Conservación
AB In the Canary Islands, many marine species are suffering the consequences of the humanimpacts; one of those species is the alga Gongolaria abies – marina, wich has suffered,since 1980, a massive decline in Gran Canaria Island, losing more than the 90 % of thecover. In this work, we updated the regression of this macroalga. Then, we determinedthe factors that better predicted the presence of this species at large scale (coastalperimeter) and at small scales, by considering presence as “open rock” or in “crevices”.This species occupied in 1980 a 47% of the coastal perimeter and a 14,08 % in 2016,nowadays, the alga occupies only a 4,39 %. Our data showed that the small- scalepresence in “open rock” was large when the sector/cell perimeter occupied by the specieswas large. We also found that sea water temperature and wave power have significantlycontributed to explain the decline of this species, so a high wave power promote thepersistence of the species, while zones with high temperatures negatively affected thealga and limited its presence in “open rock”. In brief, this study demonstrated that G.abies-marina resist in “crevices” as a mechanism of self-protection.Keywords: Gongolaria abies – marina, open rock, crevices, regression, temperature,sector/cell.
YR 2022
FD 2022
LK http://riull.ull.es/xmlui/handle/915/31681
UL http://riull.ull.es/xmlui/handle/915/31681
LA es
DS Repositorio institucional de la Universidad de La Laguna
RD 05-may-2024