Gabriel Reygondeau

Gabriel Reygondeau
University of British Columbia - Vancouver | UBC · Institute for the Oceans and Fisheries

PhD in marine ecology and biogeography

About

122
Publications
46,942
Reads
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3,177
Citations
Introduction
Biogeography and Macroecology: relations between marine organisms (from plankton to top predator) and environmental conditions at the global scale. Development and use of statistical tools to examine the dynamic and the composition of marine ecosystems in both space and time. Evaluation of the impact of anthropogenic pressure on the global marine ecosystems. Providing applied results for fishery and biodiversity management.
Additional affiliations
January 2019 - present
Yale University
Position
  • Research Associate
January 2019 - present
University of British Columbia - Vancouver
Position
  • Research Associate
January 2015 - December 2018
University of British Columbia - Vancouver
Position
  • PostDoc Position
Education
September 2009 - September 2011
Université de Montpellier
Field of study
  • Biogeography, marine ecology, climate change
September 2007 - May 2009
Sorbonne Université
Field of study
  • Oceanography, marine ecology, modelling
September 2003 - May 2007
Université Savoie Mont Blanc
Field of study
  • Biology and Ecology

Publications

Publications (122)
Preprint
There has been a proliferation of climate change vulnerability assessments of species, yet possibly due to their limited reproducibility, scalability, and interpretability, their operational use in applied decision-making remains paradoxically low. We use a newly developed Climate Risk Index for Biodiversity to evaluate the climate vulnerability an...
Article
Full-text available
Warming increases the metabolic rates of fishes and drives their oxygen demands above environmental oxygen supply, leading to declines in fish growth and smaller population sizes. Given the wide variability in species' sensitivity to changing temperature and oxygen levels, warming and oxygen limitation may be altering the composition of fish commun...
Article
Full-text available
Among ectotherms, rare species are expected to have a narrower thermal niche breadth and reduced acclimation capacity and thus be more vulnerable to global warming than their common relatives. To assess these hypotheses, we experimentally quantified the thermal sensitivity of seven common, uncommon, and rare species of temperate marine annelids of...
Article
Full-text available
The organisms that inhabit Oxygen Minimum Zones (OMZ) have specialized adaptations that allow them to survive within a very narrow range of environmental conditions. Consequently, even small environmental perturbations can result in local species distribution shifts that alter ecosystem trophodynamics. Here, we examined the effect of changing sea w...
Article
Climate change can affect fish individuals or schools, and consequently the fisheries. Studying future changes of fish distribution and abundance helps the scientific management of fisheries. The dynamic bioclimate envelope model (DBEM) was used to identify the “environmental preference profiles” of the studied species based on outputs from three E...
Article
Full-text available
Climate change is shifting the distribution of shared fish stocks between neighboring countries' Exclusive Economic Zones (EEZs) and the high seas. The timescale of these transboundary shifts determines how climate change will affect international fisheries governance. Here, we explore this timescale by coupling a large ensemble simulation of an Ea...
Article
The sustainability of global seafood supply to meet increasing demand is facing several challenges, including increasing consumption levels due to a growing human population, fisheries resources over-exploitation and climate change. Whilst growth in seafood production from capture fisheries is limited, global mariculture production is expanding. Ho...
Article
Full-text available
Extreme temperature events have occurred in all ocean basins in the past two decades with detrimental impacts on marine biodiversity, ecosystem functions, and services. However, global impacts of temperature extremes on fish stocks, fisheries, and dependent people have not been quantified. Using an integrated climate-biodiversity-fisheries-economic...
Article
Full-text available
Coral reefs worldwide are facing impacts from climate change, overfishing, habitat destruction, and pollution. The cumulative effect of these impacts on global capacity of coral reefs to provide ecosystem services is un- known. Here, we evaluate global changes in extent of coral reef habitat, coral reef fishery catches and effort, Indigenous consum...
Preprint
Full-text available
Climate change is shifting the distribution of shared fish stocks between neighboring countries’ Exclusive Economic Zones (EEZ) and the high seas. The timescale of these transboundary shifts determines how climate change will affect international fisheries governance. Coupling a large ensemble simulation of an Earth system model to a species distri...
Article
In their Comment [1], Raoult et al. challenge our use [2] of species distribution models (SDMs) to inform on the geographical origins of shark fins sold in global markets. This is despite our primary result that shark conservation should prioritize areas within the Exclusive Economic Zones (EEZs); a conclusion supported by independent biogeographic...
Article
Marine fisheries in African waters contribute substantially to food security and local economies in African coastal nations. Recently, there are growing concerns about the sustainability of living marine resources in these countries’ exclusive economic zones (EEZs) due to increased risks from climate change, pollution and potential over‐exploitatio...
Article
Ocean warming and deoxygenation are affecting the physiological performance of marine species by increasing their oxygen demand while reducing oxygen supply. Impacts on organisms (e.g., growth and reproduction) can eventually affect entire populations, altering macroecological dynamics and shifting species’ distribution ranges. To quantify the effe...
Article
Full-text available
The future of the global ocean economy is currently envisioned as advancing towards a ‘blue economy’—socially equitable, environmentally sustainable and economically viable ocean industries. However, tensions exist within sustainable development approaches, arising from differing perspectives framed around natural capital or social equity. Here we...
Article
Climate change impacts on marine life in the world ocean are expected to accelerate over the 21st century, affecting the structure and functioning of food webs. We analyzed a key aspect of this issue, focusing on the impact of changes in biomass flow within marine food webs and the resulting effects on ecosystem biomass and production. We used a mo...
Preprint
Full-text available
Among ectotherms, rare species are expected to have a narrower thermal niche breadth and reduced acclimation capacity and thus be more vulnerable to global warming than their common relatives. To assess these hypotheses, we experimentally quantified the thermal sensitivity of seven common, uncommon, and rare species of temperate marine annelids of...
Article
Full-text available
Aim Project shifts in the habitat suitability of 505 fish and invertebrate species in the Eastern Tropical Pacific that are likely to occur by the mid‐21st century under “high greenhouse gas emissions” (RCP 8.5) and “strong mitigation” (RCP 2.6) scenarios. Location The Eastern Tropical Pacific Ocean, a discrete biogeographic region from the Gulf o...
Article
Full-text available
Progress in global shark conservation has been limited by constraints to understanding the species composition and geographic origins of the shark fin trade. Previous assessments that relied on earlier genetic techniques and official trade records focused on abundant pelagic species traded between Europe and Asia. Here, we combine recent advances i...
Article
Full-text available
Regulatory boundaries and species distributions often do not align. This is especially the case for marine species crossing multiple Exclusive Economic Zones (EEZs). Such movements represent a challenge for fisheries management, as policies tend to focus at the national level, yet international collaborations are needed to maximize long-term ecolog...
Article
Full-text available
The global ocean is commonly partitioned into 4 biomes subdivided into 56 biogeochemical provinces (BGCPs) following the accepted division proposed by Longhurst in 1998. Each province corresponds to a unique regional environment that shapes biodiversity and constrains ecosystem structure and functions. Biogeochemical provinces are dynamic entities...
Article
Full-text available
The global ocean is commonly partitioned into 4 biomes subdivided into 56 biogeochemical provinces (BGCPs) following the accepted division proposed by Longhurst in 1998. Each province corresponds to a unique regional environment that shapes biodiversity and constrains ecosystem structure and functions. Biogeochemical provinces are dynamic entities...
Article
Full-text available
Aim Ocean warming has been observed in a number of marine ecosystems and is believed to influence marine species in many ways, such as through changes in distribution range and abundance. In this study, we investigated the potential impacts of climate change on the distribution and maximum catch potential of 34 warm water fishes from 2000 to 2060....
Article
Full-text available
Natural and human stressors in the high seas act across a wide range of spatial and temporal scales. These include direct interaction such as fisheries bycatch or indirect interaction like warming oceans and plastic ingestion. Area-based management tools (ABMTs), such as marine protected areas and time-area closures, are a widely accepted and a bro...
Article
In recent decades, the relationships between species distributional shifts and climate change have been investigated at various geographic scales, yet there is still a gap in understanding the impacts of climate change on marine commercial fish species surrounding the Antarctic Peninsula. The dynamic bioclimate envelope model (DBEM) is a mechanisti...
Technical Report
Full-text available
The High Level Panel for Sustainable Ocean Economy (https://oceanpanel.org/) has commissioned a series of “Blue Papers” to explore pressing challenges at the nexus of the ocean and the economy. This paper is part of a series of 16 papers to be published between November 2019 and October 2020. It addresses how multiple human impacts will impact bi...
Article
Full-text available
Previous studies have focused on changes in the geographical distribution of terrestrial biomes and species targeted by marine capture fisheries due to climate change impacts. Given mariculture's substantial contribution to global seafood production and its growing significance in recent decades, it is essential to evaluate the effects of climate c...
Article
Full-text available
Understanding the distribution of life's variety has driven naturalists and scientists for centuries , yet this has been constrained both by the available data and the models needed for their analysis. Here we compiled data for over 67,000 marine and terrestrial species and used artificial neural networks to model species richness with the state an...
Technical Report
Full-text available
Global change drivers, such as population growth, increasing consumption, inequity in resource distribution, overfishing, climate change and pollution, are challenging the sustainability of global coupled human-natural seafood production system. Modelling the linkages between the biophysical and socio-economic components of the seafood production s...
Preprint
Full-text available
Biogeographical studies have traditionally focused on readily visible organisms, but recent technological advances are enabling analyses of the large-scale distribution of microscopic organisms, whose biogeographical patterns have long been debated 1,2 . The most prominent global biogeography of marine plankton was derived by Longhurst ³ based on p...
Article
Sea water temperature affects all biological and ecological processes that ultimately impact ecosystem functioning. In this study, we examine the influence of temperature on global biomass transfers from marine secondary production to fish stocks. By combining fisheries catches in all coastal ocean areas and life history traits of exploited marine...
Article
Full-text available
In high-latitude marine environments, primary producers and their consumers show seasonal peaks of abundance in response to annual light cycle, water column stability and nutrient availability. Predatory species have adapted to this pattern by synchronising life-history events such as reproduction with prey availability. However, changing temperatu...
Chapter
Quantifying species spatial distribution and biodiversity patterns represents one of the pillars of ecology. The ocean and human society are in a closed interaction loop, with the ocean providing benefits such as food provision and humans influencing the natural state of the ocean either by direct pressures such as fisheries or indirect pressures s...
Article
In this article, we analyze the impacts of climate change on Antarctic marine ecosystems. Observations demonstrate large-scale changes in the physical variables and circulation of the Southern Ocean driven by warming, stratospheric ozone depletion, and a positive Southern Annular Mode. Alterations in the physical environment are driving change thro...
Article
Full-text available
Climate change is impacting marine ecosystems and their goods and services in diverse ways, which can directly hinder our ability to achieve the Sustainable Development Goals (SDGs), set out under the 2030 Agenda for Sustainable Development. Through expert elicitation and a literature review, we find that most climate change effects have a wide var...
Chapter
Full-text available
This Special Report on the Ocean and Cryosphere1 in a Changing Climate (SROCC) was prepared following an IPCC Panel decision in 2016 to prepare three Special Reports during the Sixth Assessment Cycle2 . By assessing new scientific literature3 , the SROCC4 responds to government and observer organization proposals. The SROCC follows the other two Sp...
Article
Full-text available
Trait-based approaches enable comparison of community composition across multiple organism groups. Yet, little is known about the degree to which empirical trait responses found for one taxonomic group can be generalized across organisms. In this study, we investigated the spatial variability of marine community-weighted mean traits and compared th...
Article
Full-text available
Risk of impact of marine fishes to fishing and climate change (including ocean acidification) depend on the species’ ecological and biological characteristics, as well as their exposure to over‐exploitation and climate hazards. These human‐induced hazards should be considered concurrently in conservation risk assessment. In this study, we aim to ex...
Article
Full-text available
International interest in the protection and sustainable use of high seas biodiversity has grown in recent years. There is an opportunity for new technologies to enable improvements in management of these areas beyond national jurisdiction. We explore the spatial ecology and drivers of the global distribution of the high seas long-line fishing flee...
Article
Full-text available
The ocean is a critical source of nutrition for billions of people, with potential to yield further food, profits, and employment in the future (1). But fisheries face a serious new challenge as climate change drives the ocean to conditions not experienced historically. Local, national, regional, and international fisheries are substantially underp...
Article
Full-text available
Climate change-reflected in significant environmental changes such as warming, sea level rise, shifts in salinity, oxygen and other ocean conditions-is expected to impact marine organisms and associated fisheries. This study provides an assessment of the potential impacts on, and the vulnerability of, marine biodiversity and fisheries catches in th...
Article
Full-text available
Climate change–reflected in significant environmental changes such as warming, sea level rise, shifts in salinity, oxygen and other ocean conditions–is expected to impact marine organisms and associated fisheries. This study provides an assessment of the potential impacts on, and the vulnerability of, marine biodiversity and fisheries catches in th...
Data
Vulnerability indicators: Exposure, sensitivity and adaptive capacity. (DOCX)
Data
Top 47 species important to fisheries in the region. Species are ordered by average catch size (tonnes). (DOCX)
Data
Average annual total catch (in tonnes), Gulf catch (in tonnes) and proportion the latter represents overall by country. (DOCX)
Data
Vulnerability of charismatic species to climate change impacts. (DOCX)
Data
Map of occurrence records for the 55 species that were modelled in the world’s oceans, including the Gulf. Source: Natural Earth version 4.0.0 - http://www.naturalearthdata.com/. Figure created using MATLAB. (TIF)
Data
Characteristics of all the priority marine species in the Gulf (ordered alphabetically) as obtained from FishBase [44], SeaLifeBase [45] and IUCN red list of threatened species [106]. TL–Trophic level. CR–Critically Endangered, EN–Endangered, VU–Vulnerable, NT–Near Threatened, LC–Least Concern, Data Deficient, NE–Not Evaluated. (DOCX)
Data
Percent change in habitat suitability forall non-fish species in the Economic Exclusive Zones (EEZs) of the Gulf in 2090. Results are presented for the RCP 8.5 scenario and as average of the three niche models (BIOCLIM, NPPEN and ENFA). The error bars represent inter-model range. (TIF)
Data
Fishery catch reconstruction for the Gulf. (DOCX)
Article
Full-text available
Aquaculture has grown rapidly over the last three decades expanding at an average annual growth rate of 5.8% (2005–2014), down from 8.8% achieved between 1980 and 2010. The sector now produces 44% of total food fish production. Increasing demand and consumption from a growing global population are driving further expansion of both inland and marine...
Data
ENFA biplot with the x-axis (marginality) and y-axis (specialisation). The white dot within the dark area represents the centre of used area while the light area is the available niche. The arrows are projections of oceanic parameters based on mariculture locations of the species (A) Pacific cupped oyster (Crassostrea gigas) (B) Cobia (Rachycentron...
Data
The linear regression between predicted mariculture location and natural occurrence habitat suitability. (A) Pacific cupped oyster (Crassostrea gigas) y = 0.01773x + 0.7906, R2 = 0.8607, p < 0.0001. (B) Cobia (Rachycentron canadum) y = 0.04762x + 0.5525, R2 = 0.5951, p < 0.0001. (C) Atlantic salmon (Salmo salar) y = 0.03001x + 0.7027, R2 = 0.8118,...