Vertebrate populations' trends across the Iberian Peninsula

54 Sesión General SG.02 Biodiversidad: conservación y biogeografía [SG.02-O-11] martes, 17 octubre, (bloque de tarde: 14:45 h.) SALA 2: Salón de Grados. Edificio Gobierno Vertebrate populations’ trends across the Iberian Peninsula Rodríguez-Caro, Roberto Carlos1; Morales-Reyes, Zebensui2; Aguión, Alba3; Arias-Real, Rebeca4; Arrondo, Eneko5; Aspillaga, Eneko6; Boada, Jordi7; Campos-Candela, Andrea8; Expósito-Granados, Mónica9; Forcada, Aitor10; Gómez-Serrano, Miguel Ángel11; Gutiérrez-Cánovas, Cayetano12; Pascual-Rico, Roberto13; Montseny, Maria14; Rotger, Andreu15; Rovira, Graciel·la16; Segura, Amalia17; Sola, Iván18; Valle, Carlos19; Capdevila, Pol20 (1) Universidad de Alicante; (2) Instituto de Estudios Sociales Avanzados (IESA-CSIC); (3) Universidade de Vigo; (4) Universitat de Barcelona; (5) Estación Biológica de Doñana (EBD – CSIC); (6) Institut Mediterrani d’Estudis Avançats (IMEDEA, UIB-CSIC); (7) Centro de Estudios Avanzados de Blanes (CEABCSIC); (8) University of Bergen; (9) Universidad de Almería; (10) Universidad de Alicante; (11) VAERSA; (12) Universidad Rey Juan Carlos; (13) Instituto de Investigación en Recursos Cinegéticos (IREC - CSIC, UCLM, JCCM),; (14) Universitat de Barcelona; (15) Institut Mediterrani d’Estudis Avançats (IMEDEA, UIB-CSIC); (16) Universitat de Barcelona; (17) Instituto de Investigación en Recursos Cinegéticos (IREC - CSIC, UCLM, JCCM); (18) Universidad de Alicante; (19) Universidad de Alicante; (20) Universitat de Barcelona E-mail de correspondencia: [[email protected]] Understanding natural populations trends has emerged as a key objective to bend the curve of biodiversity loss. Of particular concern are the impacts of stressors at the local scale, which are not necessarily reflected in the current global conservation assessments. As a hotspot of biodiversity, the Iberian Peninsula is an area of special interest for conservation. Here, we aim to synthesise the current knowledge about the population trends of marine, terrestrial and freshwater Iberian vertebrates. To that aim, we performed an extensive literature review, with more than 5000 scientific manuscripts screened and grey literature. From this initial review, and after applying data quality checks, we obtained 1500 population time series of Iberian vertebrates. Once we obtained this global database, we analysed their population trends using two-step modelling process: (i) first we applied state-space models to derive the population trend of each population time series; (ii) we then used multilevel Bayesian models to determine the factors influencing the population trends. Overall, we found that Iberian vertebrate populations display a disparity of trends, with both declines and increases, with fishes being the only taxa showing clear signs of declines. We identified major gaps in the monitoring data across the Iberian peninsula, with amphibians and reptiles being underrepresented in our dataset, despite being among the most threatened taxonomic groups. Overall, our approach will help to bridge the gap in our knowledge between the global and local scale conservation status of wild Iberian populations and help to focus the attention of future conservation policies. [SG.02-O-12] martes, 17 octubre, (bloque de tarde: 15:00 h.) SALA 2: Salón de Grados. Edificio Gobierno Using phylogeography and niche modeling for in-situ conservation of wild olive diversity. Barea Márquez, Andrés1 (1) Universidad de Granada E-mail de correspondencia: [[email protected]] Crop wild relatives (CWRs) provide an unique reservoir of genetic and phenotypic diversity. However, to date there are very few programmes and strategies specifically aimed at the conservation and management of CWRs. Here, we describe a basic and easily applicable framework for developing a network of in situ CWR conservation sites. Our methodology is based on gap analysis and combines genetic and ecological knowledge of CWRs to ensure conservation and protection of maximum diversity. We use the wild olive, Olea europaea L., throughout its native range as a case study. We combined available phylogeographic, bioclimatic and genomic data from 147 wild populations belonging to nine maternal lineages of five subspecies distributed across the Mediterranean, North Africa and Macaronesia. Using this dataset, we developed a method to identify populations growing under special ecological conditions. Based on the genetic information, niche models and information on protected areas, we compiled a list of priority populations and sites for in situ conservation of wild O. europaea, which can be developed under the European Cooperative Programme for Plant Genetic Resources (ECPGR) and the Spanish Estrategia Nacional de Conservación y Utilización de Parientes Silvestres de los Cultivos y Plantas Silvestres de Uso Alimentario. In addition, this approach could be extended to other crops and serve as a blueprint for the conservation and management of wild relatives. LIBRO ABSTRACT 2023.qxp_Maquetación 1 11/10/23 11:46 Página 54