000162572 001__ 162572
000162572 005__ 20251017144614.0
000162572 0247_ $$2doi$$a10.3390/plants14142150
000162572 0248_ $$2sideral$$a145118
000162572 037__ $$aART-2025-145118
000162572 041__ $$aeng
000162572 100__ $$aJarne, Adrián$$uUniversidad de Zaragoza
000162572 245__ $$aAssessing the Impact of Environmental and Management Variables on Mountain Meadow Yield and Feed Quality Using a Random Forest Model
000162572 260__ $$c2025
000162572 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162572 5203_ $$aSeasonal climate variability and agronomic management profoundly influence both the productivity and nutritive value of temperate hay meadows. We analyzed five years of data (2019, 2020, 2022–2024) from 15 meadows in the central Spanish Pyrenees to quantify how environmental variables (January–June minimum temperatures, rainfall), management variables (fertilization rates (N, P, K), livestock load, cutting date), and vegetation (plant biodiversity (Shannon index)) drive total biomass yield (kg ha−1), protein content (%), and Relative Feed Value (RFV). Using Random Forest regression with rigorous cross-validation, our yield model achieved an R2 of 0.802 (RMSE = 983.8 kg ha−1), the protein model an R2 of 0.786 (RMSE = 1.71%), and the RFV model an R2 of 0.718 (RMSE = 13.86). Variable importance analyses revealed that March rainfall was the dominant predictor of yield (importance = 0.430), reflecting the critical role of early-spring moisture in tiller establishment and canopy development. In contrast, cutting date exerted the greatest influence on protein (importance = 0.366) and RFV (importance = 0.344), underscoring the sensitivity of forage quality to harvest timing. Lower minimum temperatures—particularly in March and May—and moderate livestock densities (up to 1 LU) were also positively associated with enhanced protein and RFV, whereas higher biodiversity (Shannon ≥ 3) produced modest gains in feed quality without substantial yield penalties. These findings suggest that adaptive management—prioritizing soil moisture conservation in early spring, timely harvesting, balanced grazing intensity, and maintenance of plant diversity—can optimize both the quantity and quality of hay meadow biomass under variable climatic conditions.
000162572 536__ $$9info:eu-repo/grantAgreement/ES/DGA/GOP2024-000400
000162572 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000162572 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162572 700__ $$0(orcid)0000-0002-0139-0843$$aUsón, Asunción$$uUniversidad de Zaragoza
000162572 700__ $$0(orcid)0000-0002-9990-571X$$aReiné, Ramón$$uUniversidad de Zaragoza
000162572 7102_ $$15011$$2705$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Producción Vegetal
000162572 773__ $$g14, 14 (2025), 2150 [22 p.]$$tPlants$$x2223-7747
000162572 8564_ $$s2828682$$uhttps://zaguan.unizar.es/record/162572/files/texto_completo.pdf$$yVersión publicada
000162572 8564_ $$s2531251$$uhttps://zaguan.unizar.es/record/162572/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162572 909CO $$ooai:zaguan.unizar.es:162572$$particulos$$pdriver
000162572 951__ $$a2025-10-17-14:18:40
000162572 980__ $$aARTICLE