Preparing the Roadmap: "Prioritising cross-disciplinary training needs with industry" An X-Net workshop report

This workshop was part of the X-Net’s series of workshops to deliver on their goal to remove barriers for researchers crossing disciplines in the biomedical sciences. The main aims of this workshop were: i. explore how academia does, or does not, currently provide industry hires with sufficient interdisciplinary skills to perform roles in this sector, and ii. via X-Net’s future Roadmap, influence UKRI’s future training strategy. The workshop was designed around two themes and several key questions, and aimed to involve scientists from companies (big and SME) to present their views on what is required from academia to smooth the transition of staff from universities to interdisciplinary/multidisciplinary projects in industry. X-Net’s goal was to include their input to X-Net’s roadmap and thereby transfer industry’s views to funders and policy makers

Carbon dynamics of African miombo woodlands: from the leaf to the landscape

Africa’s carbon (C) cycle is one of the least well understood components of the global C cycle. Miombo woodlands are the most common woodland type in southern Africa, but despite their vast extent and importance in the biogeochemical cycles of Africa, their C dynamics are not well understood. This thesis addresses a set of science questions related to miombo woodland C dynamics that cover a range of scales, from the leaf to the landscape. The questions are related to seasonal controls on C uptake at the leaf level, to spatial distributions and scales of variation of C stocks in the landscape, and to the drivers and spatial patterns of deforestation and degradation at the regional scale. In miombo woodlands, the seasonality of productivity remains poorly understood, and it is unclear whether stomatal limitations or variations in leaf traits cause seasonal changes in productivity. I use data of leaf gas exchange and leaf traits collected in dry and wet seasons to assess the response of photosynthesis to seasonality. I found a large degree of inter-specific responses, where photosynthetic capacity was maintained between seasons in some tree species but not in others. This was linked to inter-specific stomatal regulation on leaf gas exchange, access to soil water and varied leaf traits, indicating differing timing of leaf development during the dry season. Differing timing of leaf flushing can create niche separation, facilitating the co-existence of miombo woodland tree species. I use data collected along a 5 km transect through miombo woodland to characterise the spatial distributions and scales of variation of C stocks in woody biomass and soils, and assess the links between them. I found that on the scale of a few meters, soil C stocks varied in relation to soil texture. At the kilometre scale, surface soil and woody C stocks were coupled, and varied in relation to topography. By understanding the scales of variation I was able to make recommendations for optimal sampling of C stocks in a miombo woodland landscape for improved C stock assessments. I developed and tested a simple spatial model of deforestation and degradation, using a rule-based approach, to produce risk maps of areas more likely to be affected by deforestation and degradation for a study site in central Mozambique. I found that my model was able to accurately predict the locality of high risk areas, and that roads were the major axis for forest biomass loss. Risk maps created from this method are useful for exploring the drivers of deforestation and degradation in a region dominated by miombo woodland, and for targeting policy and management efforts. Overall, this thesis has contributed significantly to our understanding of natural and human driven miombo woodland C dynamics over a range of scales, from the leaf to the landscape. In the final chapter, I discuss the implications of each chapter for our understanding of miombo woodland C dynamics, and suggest areas for further research

Research Collaborations: A guide for early career researchers by early career researchers

LERU Doctoral Summer School 2019: Building Research Capacity and a Collaborative Global CommunityThe League of European Research Universities (LERU) organises a summer school each year at one of the member universities on a different theme, inviting PhD students from Europe’s top research-intensive universities. This year’s LERU summer school was organised around the theme of collaboration in research, with the aim of developing a guidebook for early career researchers including tips and advice for successful collaborations

Agricultural expansion in African savannas: effects on diversity and composition of trees and mammals

AbstractLand use change (LUC) is the leading cause of biodiversity loss worldwide. However, the global understanding of LUC's impact on biodiversity is mainly based on comparisons of land use endpoints (habitat vs non-habitat) in forest ecosystems. Hence, it may not generalise to savannas, which are ecologically distinct from forests, as they are inherently patchy, and disturbance adapted. Endpoint comparisons also cannot inform the management of intermediate mosaic landscapes. We aim to address these gaps by investigating species- and community-level responses of mammals and trees along a gradient of small scale agricultural expansion in the miombo woodlands of northern Mozambique. Thus, the case study represents the most common pathway of LUC and biodiversity change in the world's largest savanna. Tree abundance, mammal occupancy, and tree- and mammal-species richness showed a non-linear relationship with agricultural expansion (characterised by the Land Division Index, LDI). These occurrence and diversity metrics increased at intermediate LDI (0.3 to 0.7), started decreasing beyond LDI &gt; 0.7, and underwent high levels of decline at extreme levels of agricultural expansion (LDI &gt; 0.9). Despite similarities in species richness responses, the two taxonomic groups showed contrasting β-diversity patterns in response to increasing LDI: increased dissimilarity among tree communities (heterogenisation) and high similarity among mammals (homogenisation). Our analysis along a gradient of landscape-scale land use intensification allows a novel understanding of the impacts of different levels of land conversion, which can help guide land use and restoration policy. Biodiversity loss in this miombo landscape was lower than would be inferred from existing global syntheses of biodiversity-land use relations for Africa or the tropics, probably because such syntheses take a fully converted landscape as the endpoint. As, currently, most African savanna landscapes are a mosaic of savanna habitats and small scale agriculture, biodiversity loss is probably lower than in current global estimates, albeit with a trend towards further conversion. However, at extreme levels of land use change (LDI &gt; 0.9 or &lt; 15% habitat cover) miombo biodiversity appears to be more sensitive to LUC than inferred from the meta-analyses. To mitigate the worst effects of land use on biodiversity, our results suggest that miombo landscapes should retain &gt; 25% habitat cover and avoid LDI &gt; 0.75—after which species richness of both groups begin to decline. Our findings indicate that tree diversity may be easier to restore from natural restoration than mammal diversity, which became spatially homogeneous.</jats:p

Forgone opportunities of large-scale agricultural investment: A comparison of three models of soya production in Central Mozambique

Agriculture is one of the main engines for prosperity and economic growth in Africa but effective agricultural strategies to support rural development and poverty alleviation are not yet identified. While state investment in the small-scale farming sector is minimal, and the medium-scale “emergent” household farm sector remains underrepresented, large-scale land investments are advocated as means to bring capital to rural areas and stimulate development. Yet, little empirical research has been done to contrast agricultural development strategies and to understand their strengths and weaknesses. We present an analysis of different soya production models - small-scale farmers, medium-scale mechanised emergent farmers, and large-scale commercial operations - and their socio-economic aspects in Central Mozambique. Based on purposefully collected data in 10 villages in Gurué district, our findings suggest that large-scale plantations create localized land scarcity and that the benefits from wage labour and local investments do not compensate rural populations for lost access to land. Small- and medium-scale soya farming also leads to decreasing land availability, but provides greater socio-economic benefits such as on-farm employment and work opportunities along the local value chain. Small- and medium-scale soya production increases on- and off-farm income and leads to spill-over effects to the local economy. Negative effects of these models of soya production on food production could not be detected; instead the cultivation of soya significantly increases maize yields grown in rotation. These findings suggest that small- and medium-scale commercial farming can compete with large-scale operations in key socio-economic parameters and that a concentration on large-scale investments can result in forgone opportunities regarding rural development and poverty reduction

Agricultural expansion in African savannas : effects on diversity and composition of trees and mammals

Land use change (LUC) is the leading cause of biodiversity loss worldwide. However, the global understanding of LUC’s impact on biodiversity is mainly based on comparisons of land use endpoints (habitat vs non-habitat) in forest ecosystems. Hence, it may not generalise to savannas, which are ecologically distinct from forests, as they are inherently patchy, and disturbance adapted. Endpoint comparisons also cannot inform the management of intermediate mosaic landscapes. We aim to address these gaps by investigating speciesand community-level responses of mammals and trees along a gradient of small scale agricultural expansion in the miombo woodlands of northern Mozambique. Thus, the case study represents the most common pathway of LUC and biodiversity change in the world’s largest savanna. Tree abundance, mammal occupancy, and tree- and mammal-species richness showed a non-linear relationship with agricultural expansion (characterised by the Land Division Index, LDI). These occurrence and diversity metrics increased at intermediate LDI (0.3 to 0.7), started decreasing beyond LDI>0.7, and underwent high levels of decline at extreme levels of agricultural expansion (LDI>0.9). Despite similarities in species richness responses, the two taxonomic groups showed contrasting β-diversity patterns in response to increasing LDI: increased dissimilarity among tree communities (heterogenisation) and high similarity among mammals (homogenisation). Our analysis along a gradient of landscape-scale land use intensifcation allows a novel understanding of the impacts of diferent levels of land conversion, which can help guide land use and restoration policy. Biodiversity loss in this miombo landscape was lower than would be inferred from existing global syntheses of biodiversity-land use relations for Africa or the tropics, probably because such syntheses take a fully converted landscape as the endpoint. As, currently, most African savanna landscapes are a mosaic of savanna habitats and small scale agriculture, biodiversity loss is probably lower than in current global estimates, albeit with a trend towards further conversion. However, at extreme levels of land use change (LDI>0.9 or<15% habitat cover) miombo biodiversity appears to be more sensitive to LUC than inferred from the meta-analyses. To mitigate the worst efects of land use on biodiversity, our results suggest that miombo landscapes should retain>25% habitat cover and avoid LDI>0.75—after which species richness of both groups begin to decline. Our fndings indicate that tree diversity may be easier to restore from natural restoration than mammal diversity, which became spatially homogeneous.Rufford Small Grants Foundation; Abrupt Changes in Ecosystem Services project funded with support from the Ecosystem Services for Poverty Alleviation (ESPA) programme. The ESPA programme was funded by the Department for International Development (DFID), the Economic and Social Research Council (ESRC) and the Natural Environment Research Council (NERC).http://link.springer.com/journal/10531pm2021Zoology and Entomolog

A novel application of satellite radar data: measuring carbon sequestration and detecting degradation in a community forestry project in Mozambique

Background: It is essential that systems for measuring changes in carbon stocks for Reducing Emissions from Deforestation and Forest Degradation (REDD) projects are accurate, reliable and low cost. Widely used systems involving classifying optical satell

Overcoming barriers to cross-disciplinary research

Interdisciplinary research can create many scientific opportunities but may also face challenges and barriers. X-Net’s main objective is helping interdisciplinary scientists to overcome those barriers providing guidance and resources, particularly to early career researchers. We organised an online workshop “Overcoming barriers to cross-disciplinary research” (6th July, 2022) with the purpose of identifying the main obstacles of interdisciplinary research (IDR) in the UK. The workshop incorporated a pre-workshop anonymous survey that allowed participants to identify and share some of their personal experiences of cross-disciplinary research. The workshop then used these experiences to find themes or challenges in common. It also allowed participants to consider, through action learning, what specific cross-disciplinary barrier(s) they sought advice on. The survey questionnaire was designed to focus on the opinions of individual scientists regarding the barriers or incentives for interdisciplinary research and to receive diverse perspectives. Researchers with early or ongoing experience in interdisciplinarity entering biomedical sciences from STEM were approached for their opinions

Charcoal production in the Mopane woodlands of Mozambique: what are the trade-offs with other ecosystem services?

African woodlands form a major part of the tropical grassy biome and support the livelihoods of millions of rural and urban people. Charcoal production in particular is a major economic activity, but its impact on other ecosystem services is little studied. To address this, our study collected biophysical and social datasets, which were combined in ecological production functions, to assess ecosystem service provision and its change under different charcoal production scenarios in Gaza Province, southern Mozambique. We found that villages with longer histories of charcoal production had experienced declines in wood suitable for charcoal, firewood and construction, and tended to have lower perceived availabilities of these services. Scenarios of future charcoal impacts indicated that firewood and woody construction services were likely to trade-off with charcoal production. However, even under the most extreme charcoal scenario, these services were not completely lost. Other provisioning services, such as wild food, medicinal plants and grass, were largely unaffected by charcoal production. To reduce the future impacts of charcoal production, producers must avoid increased intensification of charcoal extraction by avoiding the expansion of species and sizes of trees used for charcoal production. This is a major challenge to land managers and policymakers in the area. This article is part of the themed issue ‘Tropical grassy biomes: linking ecology, human use and conservation’