David Lusseau

David Lusseau
Technical University of Denmark | DTU · National Institute of Aquatic Resources

PhD

About

233
Publications
89,603
Reads
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Citations
Introduction
I work on sustainability science challenges, developing computational human ecology. My lab works at the intersection of life, formal, and social sciences to understand how individuals make decisions when uncertain and what the consequences of those decisions are for their health, social life, and demographic contributions. We focus on marine sustainability, that is we carry out research to determine how we can maximise the contributions of blue economies for people and their environment.
Additional affiliations
November 2007 - July 2020
University of Aberdeen
Position
  • Lecturer
January 2006 - November 2007
Dalhousie University
Position
  • Fellow
January 2005 - November 2007
Dalhousie University
Position
  • Killam postdoctoral fellow
Education
May 1999 - January 2003
University of Otago
Field of study
  • Zoology
September 1992 - May 1996
Florida Institute of Technology
Field of study
  • Marine Biology

Publications

Publications (233)
Chapter
Tourism and recreational activities now threaten the conservationConservation status of 21% of the marine mammalMarine mammals species recognized by the IUCN. In the past two decades, concerted efforts have been made to better understand the biological relevance of behavioral responses of marine mammals to whale-watchingWhale watchingdisturbanceDis...
Article
Cumulative exposure to sub-lethal anthropogenic stressors can affect the health and reproduction of coastal cetaceans and hence their population viability. To date, we do not have a clear understanding of the notion of health for cetaceans in an ecological context; that is, how health status affects the ability of individuals to survive and reprodu...
Preprint
Full-text available
More than half of the human population lives in cities meaning that most people predominantly experience nature in urban greenspace. Nature exposure is an important contributor to social, mental and physical health. As the world faces a pandemic which threatens the physical and mental health of billions of people, it is crucial to understand that a...
Article
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One of the main threats to wild primates is habitat alteration, fragmentation and destruction. Therefore it is crucial to understand the ability of those species to adapt to human-induced habitat changes to prevent extirpation. Key to this is a species diet plasticity. In Paraguay over 91% of the Upper Paraná Atlantic Forest has been destroyed to e...
Article
Dairy cows are gregarious animals that are able to thrive in a stable social group and form long-lasting dyadic relationships. However, in the modern UK commercial dairy industry, cows are commonly regrouped/relocated as part of the management plan, forcing the cows to change social partners regularly. Social bonding in group-housed adult dairy cow...
Article
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We investigated the effects of environmental factors on average daily milk yield and day-to-day variation in milk yield of barn-housed Scottish dairy cows milked with an automated milking system. An incomplete Wood gamma function was fitted to derive parameters describing the milk yield curve including initial milk yield, inclining slope, declining...
Article
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Observer-based counts and photo-identification are two well-established methods with an extensive use in cetacean studies. Using these two methods, group size has been widely reported, especially for small dolphins. Both methods may come with potential errors in estimating the group size, yet there is still a lack of comparison between both methods...
Article
Full-text available
The evolutionary context of why caloric restriction (CR) activates physiological mechanisms that slow the process of aging remains unclear. The main goal of this analysis was to identify, using metabolomics, the common pathways that are modulated across multiple tissues (brown adipose tissue, liver, plasma, and brain) to evaluate two alternative ev...
Article
Marine biodiversity loss is a global threat for the integrity of ecosystem services. Marine protected areas (MPAs) are commonly used for biodiversity conservation to displace anthropogenic threats, but by doing so they can impact coastal community livelihoods. They are often assumed to confer added cultural ecosystem services (CESs) to affected com...
Article
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Group size is a key social trait influencing population dynamics of group-living animals. The Indo-Pacific humpback dolphins (IPHDs), Sousa chinensis , a shallow water delphinid species, display a fission-fusion social system. Yet little is known about how social organization of this species vary with temporal scales and behavioral state. In this s...
Article
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We need reliable information about the spatial and temporal distribution of mobile species to effectively manage anthropogenic impacts to which they are exposed. Yet, we often cannot sustain dedicated annual surveys and data obtained from platforms of opportunity offer an alternative avenue to understand where these species spend time. Four odontoc...
Article
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Humpback dolphins (Sousa spp.) are obligate shallow‐water and resident species, and they typically live in fission‐fusion societies composed of small‐sized groups with changeable membership. However, we have scant knowledge of their behavioural ecology, starting with potential factors influencing inter‐population variability of their group sizes. H...
Article
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Bottlenose dolphins ( Tursiops truncatus ) typically feed on prey that are high in lipid and protein content and nearly devoid of carbohydrate, a dietary feature shared with other marine mammals. However, unlike fasted-adapted marine mammals that predictably incorporate fasting into their life history, dolphins feed intermittently throughout the da...
Preprint
Full-text available
Physarum polycephalum (Physarum for short) is an example of plasmodial slime moulds that are classified as a fungus "Myxomycetes". In recent years, research on Physarum has become more popular after Nakagaki et al. (2000) performed his famous experiments showing that Physarum was able to find the shortest route through a maze. Physarum) may not hav...
Article
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Foraging disruption caused by human activities is emerging as a key issue in cetacean conservation because it can affect nutrient levels and the amount of energy available to individuals to invest into reproduction. Our ability to predict how anthropogenic stressors affect these ecological processes and ultimately population trajectory depends cruc...
Article
Wildlife tourism (WT) is an important economic sector globally, which can sustain national and local economies. These activities have been reconceptualised as consumptive because of their impacts on the wildlife, and the problem of managing WT as a common-pool resource issue. We use an individual-based model to simulate the dynamics of a WT destina...
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Calorie restriction (CR) remains the most robust intervention to extend lifespan and improve healthspan. Though the cerebellum is more commonly associated with motor control, it has strong links with the hypothalamus and is thought to be associated with nutritional regulation and adiposity. Using a global mass spectrometry-based metabolomics approa...
Article
Full-text available
Multiple stressors caused by human-induced disturbances can affect the foraging opportunities of cetaceans, potentially depleting their energy stores, and ultimately impact survival and reproductive success. Currently, blubber thickness and lipid composition is used as measure of health and nutritional status in cetaceans. This assumes that blubber...
Article
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Globally, the exploitation of marine mammals has shifted from hunting to viewing over the last few decades. While refraining from actively killing animals may have a positive effect on marine mammal populations, whale and dolphin watching can induce changes such as displacement from preferred habitat and disruption of foraging that may also have se...
Article
Full-text available
Calorie restriction (CR) has a positive impact on health and lifespan. Previous work however does not reveal the whole underlying mechanism of behavioral phenotypes under CR. We propose a new approach based on phase space reconstruction (PSR) to analyze the behavioral responses of mice to graded CR. This involved reconstructing high-dimensional att...
Preprint
Full-text available
Cetaceans have varied their anatomical structure, physiology and metabolism to adapt to the challenges of aquatic life. Key to this change is the deposition of blubber. This adipose tissue plays a significant regulatory and signaling role in mammalian metabolism. As foraging disruption by human activities is emerging as a key conservation threat fo...
Conference Paper
Many real-world problems can be naturally formulated as discrete multi-objective optimization (DMOO) problems. In this research we propose a novel bio-inspired Physarum competition algorithm (PCA) to tackle DMOO problems by modelling the Physarum discrete motility over a hexagonal cellular automaton. Our algorithm is based on the chemo-attraction f...
Article
Meyer et al (2019) recently proposed that the nutritional condition of white sharks is unaffected by cage diving tourism. This conclusion was reached after analysing changes in the fatty acid profile of muscle samples collected from sharks that had spent more time around cage diving and contrasting them to sharks relatively unexposed to these activ...
Preprint
Slime mould plasmodia can adjust their behaviour in response to chemical trails left by themselves and other Physarum plasmodia. This simple feedback process increases their foraging efficiency. We still do not know whether other factors influence plasmodium behaviour in realistic competition settings. Here we designed a competition experiment wher...
Article
Full-text available
Animals undergoing calorie restriction (CR) often lower their body temperature to conserve energy. Brown adipose tissue (BAT) is stimulated through norepinephrine when rapid heat production is needed, as it is highly metabolically active due to the uncoupling of the electron transport chain from ATP synthesis. To better understand how BAT metabolis...
Article
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The 17 United Nations Sustainable Development Goals (SDGs) are set to change the way we live, and aim to create, by 2030, a sustainable future balancing equitable prosperity within planetary boundaries. Human, economic and natural resources must be used in tandem to achieve the SDGs; therefore, acting to resolve one SDG can impair or improve our ab...
Article
Wild Atlantic salmon stocks have globally declined over recent decades. On their migratory return to coastal waters individuals typically are infested by ectoparasitic caligid sea lice (Lepeophtheirus salmonis Krøyer, Caligus elongatus Nordmann). Infestation in laboratory trials can exert non-lethal impacts on the host fish, including increased str...
Article
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1.Nature‐based recreation substantially benefits human wellbeing, for example, by improving physical and mental health. However, recreation can also have severe ecological impacts. The recreational value of landscapes and natural areas is often used to generate support for public spending in conservation. However, we still don't know whether nature...
Article
Full-text available
Managing the nonlethal effects of disturbance on wildlife populations has been a long‐term goal for decision makers, managers, and ecologists, and assessment of these effects is currently required by European Union and United States legislation. However, robust assessment of these effects is challenging. The management of human activities that have...
Preprint
We are increasingly using nature for tourism and recreation, an economic sector now generating more than 10% of the global GDP and 10% of global total employment. This growth though has come at a cost and we now have 5930 species for which tourism and recreation are conservation threats. For the first time we use global social media data to estimat...
Article
Full-text available
Big data offer a great opportunity for nature-based recreation (NbR) mapping and evaluation. However, it is important to determine when and how it is appropriate to use this resource. We used Scotland as a case study to validate the use of data from Flickr as an indicator of NbR on a national scale and at several regional spatial and temporal resol...
Data
Supplementary maps and figures. Figure A. Flickr Active Users. Time series showing how many users posted at least one picture on Flickr (Flickr active users) in each month from January 2009 to April 2014. Figure B. Distance between multiple photographs by the same user. Distribution of the distance (in meters) between multiple photographs taken by...
Preprint
Full-text available
Big data offer a great opportunity for nature-based recreation (NbR) mapping and evaluation. However, it is important to determine when and how it is appropriate to use this resource. We used Scotland as a case study to validate the use of data from Flickr as an indicator of NbR on a national scale and at several regional spatial and temporal resol...
Article
Full-text available
Atlantic salmon Salmo salar is an iconic species of high conservation and economic importance. At sea, individuals typically are subject to sea lice infestation, which can have detrimental effects on their host. Over recent decades, the body condition and marine survival in NE Atlantic stocks have generally decreased, reflected in fewer adults retu...
Article
Full-text available
Calorie restriction (CR) remains the most robust intervention to extend life span and improve health span. Using a global mass spectrometry–based metabolomics approach, we identified metabolites that were significantly differentially expressed in the plasma of C57BL/6 mice, fed graded levels of calorie restriction (10% CR, 20% CR, 30% CR, and 40% C...
Article
We interact with each other and our environment in rich and complex ways. These interactions form socioecological systems in which human, economic, or natural resources are used and replenished. In 2015, the United Nations set seventeen sustainable development goals (SDGs) to attempt to change the way we live and create by 2030 a sustainable future...
Preprint
Full-text available
The way people connect with nature influences their environmental attitudes and behaviour. The primary mean people have to connect to nature is nature-based recreation which has important socio-economic and health benefits but can also have severe ecological impacts. Despite its importance, recreation is one of the least quantified ecosystem servic...
Article
Studies across a range of species have shown that sociability has positive fitness consequences. Among baboons, both increased infant survival and adult longevity have been associated with the maintenance of strong, equitable and durable social bonds. However, not all baboon populations show these patterns of bonding. South African chacma baboons (...
Article
Full-text available
Calorie restriction (CR) may extend longevity by modulating the mechanisms involved in aging. Different hypotheses have been proposed for its main mode of action. We quantified hepatic transcripts of male C57BL/6 mice exposed to graded levels of CR (0% to 40% CR) for three months, and evaluated the responses relative to these various hypotheses. Of...
Data
Table S1 Significantly differentiated metabolites based on Benjamini‐Hochberg adjusted P‐Value ≤ 0.05. 10, 20, 30 and 40CR compared to 12AL control group. Colour indicates pathway metabolite is primarily involved in. Table S2 Differentiated metabolites up and downregulated for each CR group relative to the 12AL control (p ≤ 0.05). Table S3 Correl...
Article
Full-text available
Calorie restriction (CR) leads to a remarkable decrease in adipose tissue mass and increases longevity in many taxa. Since the discovery of leptin, the secretory abilities of adipose tissue have gained prominence in the responses to CR. We quantified transcripts of epididymal white adipose tissue of male C57BL/6 mice exposed to graded levels of CR...
Conference Paper
Full-text available
Parasitic sea lice are ectoparasites infesting Atlantic salmon. In Scotland, the species of interest are the salmonid specialist Lepeophtheirus salmonis and the generalist Caligus elongatus. Mobile stages move across host surface feeding on its skin and blood. In recent decades, wild Atlantic salmon populations have declined globally, corresponding...
Article
Full-text available
Under calorie restriction (CR) animals need to lower energy demands. Whether this involves a reduction in cellular metabolism is an issue of contention. We exposed C57BL/6 mice to graded CR for 3 months, measured BMR and dissected out 20 body compartments. From a separate age-matched group (n=57), we built 7 predictive models for BMR. Unadjusted BM...
Article
Full-text available
Calorie restriction (CR) remains the most robust intervention to extend lifespan and improve health span. Using a global mass spectrometry-based metabolomic approach, we identified 193 metabolites that were significantly differentially expressed (SDE) in the livers of C57BL/6 mice, fed graded levels of CR (10, 20, 30 and 40% CR) compared to mice fe...
Data
The electronic supplementary material (ESM_F_Christiansen) contains the following:Description of data sets and variables used in analyses Figure S1. Dolphin sightings per month and year Figure S2. Dolphin conditioning as a function of COA estimated over different time periods Figure S3. Temporal trends in boat intensity, COA, dolphin prey CPUE and...
Article
Full-text available
Food provisioning of wildlife is a major concern for management and conservation agencies worldwide because it encourages unnatural behaviours in wild animals and increases each individual's risk for injury and death. Here we investigate the contributing factors and potential fitness consequences of a recent increase in the frequency of human inter...
Article
Full-text available
Nearly 50 years after Hardin’s “tragedy of the commons” we have not yet found predictive tools to guide us towards sustainable management of common-pool resources (CPR). We often have a good understanding of the qualitative relationships between the principal actors in socioecological systems (SESs), but classical quantitative approaches require a...
Preprint
Full-text available
Nearly 50 years after Hardin’s “tragedy of the commons” we have not yet found predictive tools to guide us towards sustainable management of common-pool resources (CPR). We often have a good understanding of the qualitative relationships between the principal actors in socioecological systems (SESs), but classical quantitative approaches require a...
Article
The spatial configuration of a group of animals should reflect the ability of its members to respond to environmental contingencies. Under predation risk, the optimal position for an individual in a stationary group is at the group's centre. The resulting group geometry is circular, with individual placement determined by competitive ability. Where...
Article
Full-text available
Despite the 1989 ivory trade ban, elephants continue to be killed to harvest their tusks for ivory. Since 2008, this poaching has increased to unprecedented levels driven by consumer demand for ivory products. CITES is now considering the development of a legal ivory trade [1 • Lee P.C. • Lindsay W.K. • Gobush K. • Reeve R. • Hepworth R. • Lusseau...
Article
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A short review of similarities between dolphins and humans with the help of quantitative linguistics and information theory.
Article
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Animal behaviour emerges from a complex interaction between an individual’s needs, life history strategies and the varying local environment. This environment is increasingly disturbed as human activity encroaches on previously unexposed regions. This disturbance can have different effects on individual animals or populations depending on their beh...