Alexander Tilley

Alexander Tilley
WorldFish · Resilient Aquatic Food Systems

PhD Marine Biology
Developing, testing and scaling digital technologies to strengthen food systems and livelihoods

About

35
Publications
17,030
Reads
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454
Citations
Citations since 2016
27 Research Items
429 Citations
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
Introduction
I work for WorldFish in Asia and the Pacific. My research is focused on developing technologies and approaches that generate better data on small-scale fisheries, and the way those data can be used to secure a sustainable supply of aquatic foods to feed a growing planet. I am interested in collaborating on projects developing machine learning and automated analytics approaches for fisheries, and digital tools to improve fish-based livelihoods and value chains.
Additional affiliations
January 2014 - January 2016
Smithsonian Institution
Position
  • PostDoc Position
Description
  • Providing technical expertise to strengthen marine management and fisheries in Myanmar.
January 2013 - December 2013
School for Field Studies
Position
  • Lecturer
Description
  • Course convenor and lecturer, Marine Resource Management
January 2013 - December 2013
School for Field Studies
Position
  • Lecturer
Education
September 2008 - December 2011
Bangor University
Field of study
  • Marine Biology

Publications

Publications (35)
Article
Full-text available
The trophic ecology of epibenthic mesopredators is not well understood in terms of prey partitioning with sympatric elasmobranchs or their effects on prey communities, yet the importance of omnivores in community trophic dynamics is being increasingly realised. This study used stable isotope analysis of (15)N and (13)C to model diet composition of...
Article
From native pre-Columbian subsistence economies to the modern global economy, mangroves have played an important role providing goods and services to human societies for millennia. More than 90% of the world’s mangroves are located in developing countries, where rates of destruction are increasing rapidly and on large scales. In order to design eff...
Article
Full-text available
Coastal communities within small island developing states are typically highly dependent on fisheries and other natural resource-based livelihoods. However, specialisation as a ‘fisher’ is rare compared to diverse livelihoods that can be adapted as opportunities and challenges emerge. Understanding this dynamic “livelihood landscape” is important f...
Article
Full-text available
The Pacific coast of Colombia has some of the most extensive mangrove forests in South America. As an isolated region and one of the country's poorest, coastal communities rely on fishing as a main source of animal protein and income. In an attempt to reverse declining trends of fisheries resources, in 2008, an Exclusive Zone of Artisanal Fishing c...
Article
Full-text available
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fi...
Article
Full-text available
Timor-Leste is one of the world’s most malnourished nations where micronutrient-deficient diets are a contributing factor to the prevalence of child stunting, currently estimated to be 45.6% of children under five. Fish are an important source of nutrients and one that may assist the country’s predominantly rural population of agriculturalists to e...
Article
Full-text available
Integrated management of coral reef foods, as a highly diverse set of blue foods, can contribute to addressing the dual challenges of malnutrition and biodiversity loss. Advances in nutrition research have made it possible to understand nutritional benefits on a species by species basis, and to make comparisons with benefits derived from land-based...
Article
Full-text available
Adaptive, inclusive and effective management of fisheries resources is dependent on knowledge from multiple quantitative and qualitative sources. As technology advances, there is an increasing interest in digital and automated solutions for gathering fisheries data. Small-scale fisheries (SSF) have presented a persistent challenge to many centraliz...
Technical Report
Full-text available
A summary of the research findings from five years of the FISH core research program of WorldFish and partners.
Article
Full-text available
**A readable abstract** Sawfishes are cool but seriously in trouble. They breed up rivers and use shallow coastal areas like mangroves, and have a saw on their face which makes them very prone to getting stuck in nets - even if fishers don't want to catch them! We don't know much about them the Pacific coasts of Colombia and Panamá so we dug into t...
Article
The Eastern Tropical Pacific (ETP) comprising the coasts of Costa Rica, Panama, Colombia and Ecuador, represents an area of high marine biodiversity that supports productive fisheries and acts as an important migratory corridor for many marine species. Despite its biological importance, the ETP is understudied and lacks sufficient data for science-...
Preprint
The role of mangroves as pivotal providers of ecosystem services has been widely acknowledged. In Latin America, mangroves play an important role in traditional coastal livelihoods, but the growing economy of these nations demands the expansion of land for development, putting pressure in ecosystems such as mangroves. Here we examine the impact of...
Preprint
Full-text available
Timor-Leste is one of the world's most malnourished nations where micronutrient-deficient diets are a contributing factor to the prevalence of child stunting, currently estimated to be 45.6% of children under five. Fish are an important source of micronutrients and one that may assist the country's predominantly rural population of agriculturalists...
Preprint
Full-text available
The Eastern Tropical Pacific (ETP) comprising the coasts of Costa Rica, Panama, Colombia and Ecuador, represents an area of high marine biodiversity that supports productive fisheries, and acts as an important migratory corridor for many marine species. Despite its biological importance, the ETP is understudied and lacks sufficient data for science...
Preprint
Full-text available
Sawfishes are considered to be one of the most endangered families of fishes in the world. Their diadromous ecology and vulnerability to fishing nets have brought most populations to the brink of collapse. Conservation of the surviving populations is hindered by the paucity of historic and contemporary catch and observational records, and assessmen...
Book
Full-text available
The aim of this report is to present evidence towards how Information and Communication Technologies for Small-scale Fisheries (ICT4SSF) might enable and support the implementation of the FAO’s Voluntary Guidelines for Securing Sustainable Small-Scale Fisheries in the Context of Food Security and Poverty Eradication (SSF Guidelines). We present cas...
Article
Full-text available
Small-scale fisheries are responsible for landing half of the world’s fish catch, yet there are very sparse data on these fishing activities and associated fisheries production in time and space. Fisheries-dependent data underpin scientific guidance of management and conservation of fisheries systems, but it is inherently difficult to generate robu...
Preprint
Full-text available
Small-scale fisheries are responsible for half of the global fish catch, and fisheries-dependent data underpin scientific guidance of management and conservation, yet we have almost no data on their activities and production over time and space. We use open source software components including the Shiny R package to build peskAAS, an adaptable and...
Technical Report
Full-text available
This report details the current knowledge and available data on the fisheries and aquaculture sectors in Timor-Leste.
Article
Full-text available
A greater understanding of gendered roles in fisheries is necessary to value the often-hidden roles that women play in fisheries and households. We examine women’s contributions to household food and income using focus group discussions, market surveys, and landings data in six communities in Timor-Leste. Women were actively fishing more days per m...
Method
Full-text available
This “New Idea” tool is for guiding conversations about a new livelihood activity and helping to answer the question “Is this a good idea?” In any new endeavour – especially those that are championed by community members – there is an optimistic tendency to underestimate the potential risks and obstacles to success. This tool seeks to support exten...
Conference Paper
Full-text available
Tracking fishing activities is a measure to understand the distribution of marine biology, the abundance of resources, and the living conditions of fishers. This research uses experiences from the voyage data recorder (VDR) project of Taiwan to map the distribution of marine resources of Timor-Leste, an island at the southern end of Maritime Southe...
Article
Full-text available
Capture fisheries in small island developing states (SIDS) have the capacity to increase access to vital micronutrient-rich food to tackle malnutrition, but when fishers are restricted to nearshore habitats by limited capacity (boats, engines, fishing gear), fisheries production can be low. This is the case of coastal Timor-Leste, where some of the...
Article
Full-text available
Fisheries co-management is an increasingly globalized concept, and a cornerstone of the Voluntary Guidelines for Securing Sustainable Small-scale Fisheries in the Context of Food Security and Poverty Eradication, adopted by the United Nations Food and Agriculture Organization member states in 2014. Timor-Leste is a politically young country in the...
Article
Mangroves are one of the most productive ecosystems in the world, sustaining millions of coastal livelihoods. However, their area of occurrence has been greatly reduced over the last century. In this study, we identify potential drivers of land use and land cover change adjacent to mangroves on the Pacific shorelines of Colombia, Panama and Costa R...
Article
It is estimated that more than 200 million people worldwide depend on small-scale fisheries for their livelihood, driving the need for fisheries reform to develop effective, local-level governance systems to protect food security and lessen reliance on common resources. However, our ability to impose new management relies on the assessment of vulne...
Article
It is estimated that more than 200 million people worldwide depend on small-scale fisheries for their livelihood, driving the need for fisheries reform to develop effective, local-level governance systems to protect food security and lessen reliance on common resources. However, our ability to impose new management relies on the assessment of vulne...
Article
Full-text available
Invasive lionfish Pterois volitans and Pterois miles are one of the greatest threats to coral reef fisheries in the Caribbean. Management currently relies solely on removal, however, there is little understanding of spatial ecology of lionfish to inform management strategies and thus, increase their effectiveness.The use of detection probability an...
Technical Report
Full-text available
Esta publicación fue producida para revisión de la Agencia de los Estados Unidos para el Desarrollo Internacional. Este documento fue preparado por Smithsonian Institution para Chemonics International para completar las actividades bajo el contrato No AID-514-TO-11-00002.
Article
Full-text available
The structure of animal movement paths at varying spatial scales allows insight into the importance of habitat distribution and their response to scale in heterogeneous landscapes. Home-ranging animals typically exhibit constrained random movements at large spatial scales, with small-scale orientation reflecting responses to sensory stimuli. The so...
Article
Full-text available
1. The southern stingray Dasyatis americana is a benthic mesopredator found in varying densities throughout Caribbean shallow reef systems, yet despite its increasing inclusion in fisheries, many aspects of its population ecology are still unknown. 2. Belt transects and distance sampling techniques were used to estimate seasonal abundance of an une...

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Projects

Projects (3)
Archived project
Project
Exploring the role of fisheries in multiple livelihood strategies for income and food security in Timor Leste.