271 documents found, page 1 of 28
Natural regeneration dynamics and diversity in Pinus sylvestris stands: recomme...
Patrício, Maria Sameiro; Nunes, LuísIn Serra da Nogueira (northern Portugal), a Natura 2000 site characterized by extensive Quercus pyrenaica forests, even-aged stands of Pinus sylvestris (62-68 years old), originally established for timber, currently lacks silvicultural strategies aligned with biodiversity, regeneration and resilience goals. This study analyzed natural regeneration, and species diversity at the plot scale in two even-aged P. syl...
Ecodesign and environmental assessment: a synergy for higher education institut...
Swe, Wint; Ribau Teixeira, Margarida; Smuleac, Laura; Nunes, LuísThis article explores how ecodesign can help enhance environmental assessment methods (EAMs) employed by Higher Education Institutions (HEIs). Current EAMs primarily offer resource management evaluations or sustainability rankings but lack holistic and actionable solutions for institutional improvements. The proposed method integrates ecodesign tools, such as Life Cycle Assessments (LCA), environmental benchmar...
COVID-19 pandemic impacted differently air quality in Latin American cities
Atiaga, Oliva; Páez, Fernando; Jácome, Wilson; Castro, Rafael; Collaguazo, Edison; Nunes, LuísThis research explores the spatial and temporal variations of nitrogen dioxide (NO2), sulphur dioxide (SO2), and ozone (O-3) levels in four Latin American cities, namely Mexico City, Santiago de Chile, Lima, and the Metropolitan District of Quito, utilizing Sentinel-5P satellite data alongside ground-based monitoring stations. The period covers pre-lockdown, lockdown, and post-lockdown phases of the COVID-19 pa...
Estimation of carbon stock in young sweet chestnut forest and agroforest planta...
Patrício, Maria Sameiro; Luchese, Luan; Nunes, Luís; Luchese, LuanRemoving CO2 from the atmosphere and storing carbon in soil and vegetation are important ecosystem services provided by sweet chestnut (Castanea sativa Mill.) plantations, both in forest and agroforest systems, for which producers may be paid under certain circumstances. Diversifying chestnut owner’s revenues beyond timber or nut, turning storage of carbon into a passive income stream, could be an opportunity t...
Comparative growth and yield performance of sweet chestnut in high-forest and c...
Patrício, Maria Sameiro; Nunes, LuísWe compare growth and yield of sweet chestnut in coppice and high-forest systems up to 24 years of age in Northern Portugal. In the coppice, data from 4 permanent plots submitted to different management models for small (P1), medium (P2) and large (P4) diameters, including a plot without intervention (P3), were used. Management model in P4 (1 shoot at the end of rotation) is converging to a similar product as h...
Contamination and carcinogenic risks of lead in lip cosmetics in China
Gong, Yu; Chu, Junru; Kwong, Raymond; Nunes, Luís; Zhao, Di; Tang, Wenli; Li, Chengjiu; Wei, Zhongbo; Ju, Yongming; Li, Hongbo; Ma, Lena Q.; Yu, XiezhiThere are growing concerns about elevated lead (Pb) levels in lip cosmetics, yet in China, the largest lip cosmetic market, recent Pb contamination in lip cosmetics and associated Pb exposure remain unclear. Here, we measured Pb levels of 29 popular lip cosmetics in China and conducted the bioaccessibility-corrected carcinogenic risk assessments and sensitivity analysis regarding Pb exposure for consumers using...
Global microplastic fiber pollution from domestic laundry
Wang, Chunhui; Song, Jing; Nunes, Luís; Zhao, Hongting; Wang, Peng; Liang, Zhirong; Arp, Hans Peter H.; Li, Gang; Xing, BaoshanThe rapid expansion of fast fashion has significantly increased microplastic fiber (MPF) release during laundry practices, accounting for approximately one-third of primary microplastics entering the ocean. Currently, a significant gap exists in global-scale research on the release of MPFs from washing textiles. This study introduces an innovative empirical model to assess the spatial distribution of MPF emissi...
Mercury supply limits methylmercury production in paddy soils
Zhong, Huan; Su, Yao; Wu, Xinda; Nunes, Luís; Li, Chengjun; Hao, Yunyun; Liu, Yu-Rong; Tang, WenliThe neurotoxic methylmercury (MeHg) is a product of inorganic mercury (IHg) after microbial transformation. Yet it remains unclear whether microbial activity or IHg supply dominates Hg methylation in paddies, hotspots of MeHg formation. Here, we quantified the response of MeHg production to changes in microbial activity and Hg supply using 63 paddy soils under the common scenario of straw amendment, a globally ...
Characterization of chestnut bark fungal communities in healthy trees and bligh...
Coelho, Valentim; Nunes, Luís; Moura, Luísa; Gouveia, Maria EugéniaVarious fungal species together with Cryphonectria parasitica (Murr.) Barr. have been isolated from chestnut tissues with blight symptoms. Microfungi remain in cankers during tissue healing, which occurs by transmitting hypovirulence by Cryphonectria hypovirus 1 (CHV1) compatible strains. However, studies focused on the diversity and ecology of the non-C. parasitica taxa on chestnut bark are lacking. This work ...
Assessing the performance of analytical methods for propolis – A collaborative ...
Vilas-Boas, Miguel; Lopes, Mélissa; Nunes, Luís; Pereyra, A.; Kunert, C.; Beckh, G.; Çelemli, Ömür Gençay; Sorkun, Kadriye; Georgé, StéphanePropolis is a resinous beehive product with extraordinary bioactivity and chemical richness, linked with the botanical sources of the resin. The potential of this product keeps captivating the scientific community, conducting to continuous and growing research on plant sources, composition, or applications in agriculture, cosmetics, pharmacy, odontology, etc. In all cases, the quality assessment is a requiremen...