Browsing NINA Brage by Author "Venter, Alexander Samuel"
Now showing items 1-8 of 8
-
Application of Landsat-derived vegetation trends over South Africa: Potential for monitoring land degradation and restoration
Venter, Alexander Samuel; Scott, Samantha Luise; Desmet, Philip G.; Hoffmann, Michael Timm (Peer reviewed; Journal article, 2020)Monitoring vegetation change is important because the nature, extent and rate of change in key measures, such as plant biomass, cover and species composition, provides critical insight into broader environmental and land ... -
COVID-19 lockdowns cause global air pollution declines
Venter, Alexander Samuel; Aunan, Kristin; Chowdhury, Sourangsu; Lelieveld, Jos (Peer reviewed; Journal article, 2020)The lockdown response to coronavirus disease 2019 (COVID-19) has caused an unprecedented reduction in global economic and transport activity. We test the hypothesis that this has reduced tropospheric and ground-level air ... -
COVID-19 lockdowns cause global air pollution declines
Venter, Alexander Samuel; Aunan, Kristin; Chowdhury, Sourangsu; Lelieveld, Jos (Peer reviewed; Journal article, 2020)The lockdown response to coronavirus disease 2019 (COVID-19) has caused an unprecedented reduction in global economic and transport activity. We test the hypothesis that this has reduced tropospheric and ground-level air ... -
Does defoliation frequency and severity influence plant productivity? The role of grazing management and soil nutrients
Venter, Alexander Samuel; Hawkins, Heidi-Jayne; Cramer, Michael D. (Peer reviewed; Journal article, 2020)Rangeland management approaches, including rotational grazing, rely on assumptions about plant growth responses to the intensity, or severity (sward height) plus frequency, of defoliation. We tested these assumptions at ... -
Green Apartheid: Urban green infrastructure remains unequally distributed across income and race geographies in South Africa
Venter, Alexander Samuel; Shackleton, Charlie M.; Van Staden, Francini; Selomane, Odirilwe; Masterson, Vanessa A. (Journal article, 2020)Urban green infrastructure provides ecosystem services that are essential to human wellbeing. A dearth of national-scale assessments in the Global South has precluded the ability to explore how political regimes, such as ... -
Hyperlocal mapping of urban air temperature using remote sensing and crowdsourced weather data
Venter, Alexander Samuel; Brousse, Oscar; Esau, Igor; Meier, Fred (Journal article, 2020)The impacts of climate change such as extreme heat waves are exacerbated in cities where most of the world's population live. Quantifying urbanization impacts on ambient air temperatures (Tair) has relevance for human ... -
Linking green infrastructure to urban heat and human health risk mitigation in Oslo, Norway
Venter, Alexander Samuel; Krog, Norun Hjertager; Barton, David Nicholas (Peer reviewed; Journal article, 2019)The predicted extreme temperatures of globalwarming aremagnified in cities due to the urban heat island effect. Even if the target for average temperature increase in the Paris Climate Agreement is met, temperatures during ... -
Urban nature in a time of crisis: recreational use of green space increases during the COVID-19 outbreak in Oslo, Norway
Venter, Alexander Samuel; Barton, David Nicholas; Gundersen, Vegard; Figari, Helene; Nowell, Megan Sara (Peer reviewed; Journal article, 2020)The global response to the COVID-19 pandemic has brought with it significant changes to human mobility patterns and working environments. We aimed to explore how social distancing measures affected recreational use of urban ...