RT journal article
T1 The importance of locally sourced data in identifying population trends: Insights from Iberian vertebrates
A1 Rodríguez Caro, Roberto C
A1 Morales Reyes, Zebensui
A1 Aguión, Alba
A1 Arias Real, Rebeca
A1 Arrondo, Eneko
A1 Aspillaga, Eneko
A1 Boada, Jordi
A1 Campos Candela, Andrea
A1 Expósito Granados, Mónica
A1 Forcada, Aitor
A1 Freeman, Robin
A1 Gómez Serrano, Miguel Ángel
A1 Gutiérrez Cánovas, Cayetano
A1 Pascual Rico, Roberto
A1 Marconi, Valentina
A1 Montseny, Maria
A1 Rotger, Andreu
A1 Rovira, Graciella
A1 Segura, Amalia
A1 Sola, Iván
A1 Capdevila, Pol
A2 Biología
K1 Abundance
K1 Amphibia
K1 Aquatic ecosystems
K1 Biomass
K1 Conservation status
K1 Demography
K1 Density
K1 Population dynamics
AB Understanding species population trends is key for assessing their conservation status and proposing measures to ensure their future persistence amid recent biodiversity loss. However, studies are reporting contrasting biodiversity trends over time. These discrepancies can be partly attributed to biases in global datasets, which might not capture the representativeness of local processes. Here, we aimed to address this gap of knowledge by complementing data included in the Living Planet Database (LPD), one of the largest repositories of population time-series, with locally sourced data from the Iberian Peninsula. The study aim: (i) to assess the state of wildlife Iberian vertebrates using population time-series across taxonomic groups and (ii) to determine differences between locally sourced data and LPD (evaluating also the differences between data sources). To supplement LPD, we conducted a review, analysing over 6000 peer-reviewed manuscripts and grey literature documents. We obtained 999 population time-series for 294 vertebrate species compiled in an Iberian Vertebrate (IbeV) database, two times the number of populations as the LPD includes. Our results indicate contrasting population trends across taxonomic groups, with freshwater amphibians and bony fishes showing steep declines. Moreover, the LPD shows a positive trend and IbeV indicates no net change over time. Threatened species did not exhibit net changes in population trends, while non-threatened species showed positive trends. We showed that local databases can provide distinct population trends compared to global databases. This approach highlights the need to bridge the gap between global and local datasets, to support context-specific management and conservation programmes.
PB Elsevier
SN 0006-3207
YR 2024
FD 2024-08-05
LK http://hdl.handle.net/10498/35695
UL http://hdl.handle.net/10498/35695
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026