ESECS - Artigos em revistas internacionais
Permanent URI for this collection
Browse
Browsing ESECS - Artigos em revistas internacionais by Sustainable Development Goals (SDG) "12:Produção e Consumo Sustentáveis"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- Assessing the extent and the environmental drivers of Eucalyptus globulus wildling establishment in Portugal: results from a countrywide surveyPublication . Catry, F. X.; Moreira, F.; Deus, E.; Silva, J. S.; Águas, AnaTasmanian blue gum (Eucalyptus globulus) has been increasingly used in forestry outside its native range, and is nowadays one of the most important pulpwood species in the world. E. globulus has great economic importance in many countries, and in Portugal it has recently become the most widespread tree species. However, there is also an increasing concern about the potential ability of eucalypts to naturally establish from seed (wildling establishment), because of negative ecological and economic impacts this could cause. The natural establishment of this fast-growing exotic species may have undesirable consequences, but little is known about its distribution, or which are the factors influencing its occurrence. In order to investigate these issues, we characterized wildling occurrence and abundance along 3111 roadside transects adjacent to eucalypt plantations distributed throughout continental Portugal. Eucalypt wildlings were found in 60 % of the sampled transects and across all natural regions, with densities ranging from 0 to 10,000 plants ha−1 (mean = 277 plants ha−1). The potential influence of environmental variables on wildling establishment from plantations was assessed using boosted regression trees. The abundance of wildlings was found to be primarily affected by precipitation and distance from the sea (used as a surrogate of thermal amplitude), although topography, frost occurrence and soil type also played a significant role. Plant density peaked at around 1500 mm of annual precipitation and it decreased with both decreasing and increasing precipitation, reaching the lowest values below 800 mm and above 2400 mm. Eucalypt wildlings were also more abundant in areas with milder temperatures, namely closer to the sea (with lower thermal amplitude) and with lower number of frost days. Finally, plant density also seemed to be favoured in areas with intermediate elevation, higher slope and with certain soil types (namely Cambisols and Podzols). Knowing the regions with higher wildling density and understanding the factors influencing plant establishment may help managers to establish and prioritize eventual control plans in regions with higher probability of recruitment.
- How customer expectations drive loyalty to food delivery app brandsPublication . Marques, Alzira; Lopes, Marlene; Santos, CéliaConsumers frequently use food delivery apps due to time constraints or the desire to explore diverse cuisines. These apps offer convenience and accessibility, but user loyalty is also shaped by factors such as ease of use, performance expectations, information quality, self-efficacy, and user enjoyment. This study analyses how user expectations contribute to brand loyalty in food delivery apps. A quantitative survey of 160 users was conducted, and data were analysed using structural equation modelling via Smart PLS. Results indicate that information quality and self-efficacy positively affect perceived ease of use; in turn, ease of use and self-efficacy influence performance expectations. Both performance and effort expectations significantly impact brand loyalty. Interestingly, information quality does not directly influence performance expectations, possibly due to users relying on external sources. The findings enhance understanding of user behaviour and provide insights for future research on digital food service platforms