000162822 001__ 162822
000162822 005__ 20251017144653.0
000162822 0247_ $$2doi$$a10.1016/j.scitotenv.2025.180342
000162822 0248_ $$2sideral$$a145230
000162822 037__ $$aART-2025-145230
000162822 041__ $$aeng
000162822 100__ $$aHernández, Mauricio
000162822 245__ $$aDendrochronological and dendrochemical approaches to assess lindane contamination in pine tree rings at the Bailín landfill site (Sabiñánigo, Huesca, Spain)
000162822 260__ $$c2025
000162822 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162822 5203_ $$aDendrochronology—the scientific method of dating tree rings—has been widely applied to reconstruct past environmental events such as paleoclimatic variation, climate change, wildfire history, droughts, floods, and glacial dynamics. However, its application to track the historical deposition of persistent organic pollutants remains underexplored. In this study, we analyzed annual growth rings of Pinus sylvestris to reconstruct the temporal dynamics of hexachlorocyclohexane (HCH) isomer contamination at the Bailín landfill site (Sabiñánigo, northeastern Spain) over the period 1979–2018. Our results indicated an average tree age of 49.5 years and an average tree-ring width of 1.60 mm. Mean sensitivity values revealed greater tree-ring growth variability during the 1986–1992 interval compared to the remaining periods. The ring width index exhibited a heterogeneous pattern and non-linear growth dynamics in radial tree development over the 78-year analysis period. The lowest HCH concentrations were recorded during 1979–1985, prior to the use of the site for HCH waste disposal. In contrast, the highest concentrations occurred during 2016–2018, following the large-scale relocation of HCH-contaminated material from the old landfill to a newly constructed secure cell. This pattern is consistent with known site management history and suggests that HCH, once absorbed and translocated from the roots to the trunk, exhibits low mobility and high persistence within P. sylvestris tissues. Our findings support, at least for Scotch pine, the use of dendrochemical analysis as a valuable tool for reconstructing temporal trends in environmental contamination by persistent organic pollutants.
000162822 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000162822 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162822 700__ $$aValladares, Yefrin
000162822 700__ $$aLópez, Ema
000162822 700__ $$aFernández, Jesús
000162822 700__ $$0(orcid)0000-0001-7275-9321$$aGómez, Javier$$uUniversidad de Zaragoza
000162822 7102_ $$12000$$2685$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Petrología y Geoquímica
000162822 773__ $$g999 (2025), 180342 [9 pp.]$$pSci. total environ.$$tSCIENCE OF THE TOTAL ENVIRONMENT$$x0048-9697
000162822 8564_ $$s3286945$$uhttps://zaguan.unizar.es/record/162822/files/texto_completo.pdf$$yVersión publicada
000162822 8564_ $$s2101522$$uhttps://zaguan.unizar.es/record/162822/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162822 909CO $$ooai:zaguan.unizar.es:162822$$particulos$$pdriver
000162822 951__ $$a2025-10-17-14:37:09
000162822 980__ $$aARTICLE