Joan Navarro

Joan Navarro
Institut de Ciències del Mar

PhD

About

180
Publications
42,474
Reads
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3,341
Citations
Introduction
My research focuses on ecology, behaviour and conservation of marine organisms. I have especial interest in the understanding of their ecological roles in the marine ecosystems, their trophic relationships at the food-web level and the main ecological and evolutionary factors, including natural and human-mediated factors, that modulate their behavioural patterns, population dynamics and interspecific interactions.
Additional affiliations
December 2021 - present
Institut de Ciències del Mar
Position
  • Senior Researcher
September 2017 - December 2021
Institut de Ciències del Mar
Position
  • Senior Researcher
January 2017 - August 2017
Estación Biológica de Doñana
Position
  • PostDoc Position
Education
October 2003 - June 2005
University of Barcelona
Field of study
  • Animal Ecology
June 2003 - April 2008
University of Barcelona
Field of study
  • Animal Ecology (ecological and evolutionary determinants of foraging strategies in pelagic seabirds)
October 1997 - June 2002
Universidad Miguel Hernández de Elche
Field of study
  • Environmental Sciencies

Publications

Publications (180)
Article
Full-text available
The Norway lobster, Nephrops norvegicus, supports a key European fishery. Stock assessments for this species are mostly based on trawling and UnderWater TeleVision (UWTV) surveys. However, N. norvegicus are Frontiers in Marine Science burrowing organisms and these survey methods are unable to sample or observe individuals in their burrows. To accou...
Article
Small pelagic fish (SPF) species such as European sardine Sardina pilchardus , European anchovy Engraulis encrasicolus , round sardinella Sardinella aurita and European sprat Sprattus sprattus play important ecological roles in the Mediterranean Sea marine ecosystem. However, changes in SPF abundance and biomass have recently been observed in the b...
Article
To obtain a better understanding of the functioning of ecosystems and how they respond to disturbance, it is necessary to identify the relevant biotic interactions and specific trophic roles. Predation is one of the most important biotic interactions that can also define the spatial patterns of other species. Many predators are considered key speci...
Article
Full-text available
The only wetland in Europe colonized successfully by the apple snail Pomacea maculata Perry, 1810, is the Ebro Delta (Spain). After ten years it has become widespread there, despite significant eradication attempts. In spite of its great negative ecological and economic impacts, its incorporation into food webs can result in an abundant potential r...
Article
Full-text available
Fishing activity generates high amounts of fishing discards, a predictable anthropogenic food subsidies used by seabirds. Although the use of discards by these predators has been well studied, there is a lack of knowledge about the ontogenetic differences in their use. We contributed to filling this gap for the yellow-legged gull (Larus michahellis...
Article
Full-text available
Even in areas as remote as the Southern Ocean, marine organisms are exposed to contaminants that arrive through long-range atmospheric transport, such as mercury (Hg), a highly toxic metal. In previous studies in the Southern Ocean, inter-specific differences in Hg contamination in seabirds was generally related to their distribution and trophic po...
Article
Full-text available
Blue shark (Prionace glauca) is amongst the most abundant shark species in international trade, however this highly migratory species has little effective management and the need for spatio-temporal strategies increases, possibly involving the most vulnerable stage or sex classes. We combined 265,595 blue shark observations (capture or satellite ta...
Conference Paper
Full-text available
Cephalopod beaks are important chitinous hard structures, used for preying upon and fragmenting prey. Thus, it is expected that ecological pressures drive cephalopod beak shape. These structures, which are used in species identification, may exhibit a certain association with phylogenetic relationships among cephalopod species. Here, we investigate...
Article
Full-text available
Ecosystem services associated with cetacean strandings have been altered by humans through exploitation of wild populations during the whaling era and more recently by regulations on carcass management and disposal to abide by environmental health requirements. Here, we systematically review the scientific literature and gather data on cetacean str...
Article
Full-text available
Morphological variation in biological structures may be driven by genetic and environmental factors, such as inter-and intraspecific competition for resources. In seabirds, although the bill is also involved in vocalization, olfaction, sexual selection and defence, the main drivers of high morphological plasticity in bill size and shape appear to r...
Article
Small pelagic fish (SPF) are key organisms for the functioning of pelagic marine ecosystems. In recent decades, these species have undergone significant changes in biomass, growth and body condition in the Mediterranean Sea. Seasonal and spatial information about changes in biological and ecological traits of SPF and their relationship with environ...
Article
The yellow-legged gull is an opportunistic and generalist bird that has colonised urban areas, where it has found very favourable trophic resources but also causes disturbance to humans and damage to infrastructure. Here, we investigated the potential role that gulls play in the dispersal of plants in Barcelona, a highly populated city of north-wes...
Preprint
Full-text available
Increasing interest in the acquisition of biotic and abiotic resources from within the deep sea (e.g. fisheries, oil-gas extraction, and mining) urgently imposes the development of novel monitoring technologies, beyond the traditional vessel-assisted, time-consuming, high-cost sampling surveys. The implementation of permanent networks of seabed and...
Article
Full-text available
Interspecific introgression can occur between species that evolve rapidly within an adaptive radiation. Pachyptila petrels differ in bill size and are characterised by incomplete reproductive isolation, leading to interspecific gene flow. Salvin’s prion ( Pachyptila salvini ), whose bill width is intermediate between broad-billed ( P. vittata ) and...
Presentation
Full-text available
In colonial seabirds, ecological divergence may occur in the absence of physical barriers, driven by the isolation of populations due to distance, or the adaptation to local environment. In migratory seabirds, the geographic segregation among breeding populations can persist year round (i.e., strong migratory connectivity) when populations breeding...
Research Proposal
Full-text available
PLOME proposes a spatially adaptive, non-invasive, modular platform of independent and wirelessly connected benthic stations and AUVs to intelligently observe, monitor and map marine ecosystems, during long-lasting periods with real-time supervision. The proposal brings together elements that can be effectively developed with current technology, to...
Article
The Norway lobster Nephrops norvegicus is one of the most important marine resources for European fisheries. However, overfishing has caused the stocks to decline over the last decades, particularly in the Mediterranean Sea. The implementation of no-take marine reserves could change these current trends, thus achieving a more sustainable fishery. T...
Article
We assessed the trophic ecology of blue whiting larvae in the NW Mediterranean by means of stomach content analyses in relation to their planktonic trophic environment. The trophic position of blue whiting larvae and that of the main taxa of the planktonic community was estimated by means of stable isotope analyses. Larvae and zooplankton were samp...
Article
Trophic studies are key to understand the ecological role of marine species in natural ecosystems. In this study, we examined the trophic ecology of the holocephalan rabbitfish Chimaera monstrosa, a demersal chondrichthyan considered Near Threatened by the Mediterranean red list assessment of the IUCN. The study was based on the analysis of the sto...
Article
Full-text available
1. Many seabirds dive to forage, and the ability to use this hunting technique varies according to such factors as morphology, physiology, prey availability, and ambient light levels. Proficient divers are more able to seize sinking baits deployed by longline fishing vessels and may return them to the surface, increasing exposure of other species....
Article
The exploitation of forage fish species can modify the functioning of marine ecosystems potentially impacting the population status of predators. This may be the case for the western Mediterranean Sea, where a reduction in the biomass of two key pelagic forage fish (European anchovy Engraulis encrasicolus and European sardine Sardina pilchardus) co...
Conference Paper
Full-text available
The morphology of species is directly linked with their role within ecosystems. In this context, variation in the shape of anatomical structures used for prey capture and feeding can be related to foraging functions and thus may explain the existence of differences in the trophic niche between species. Most cephalopods are carnivorous and active pr...
Article
Full-text available
The provision of predictable anthropogenic food subsidies (PAFS) to urban wildlife has been recognized as an important trophic input in urban ecosystems. However, there is a lack of agreement about the benefits and harms of urban PAFS for avian species. While there are many studies about the impact of PAFS on birds, little information is available...
Article
Full-text available
Assessment of chemical exposures in the marine environment is frequently undertaken in sedentary organisms inhabiting coastal environments. However, predatory pelagic fish should be considered sentinel species, as they play an important role in the sustainability of the ecosystems due to their high position in trophic webs. In this study, carboxyle...
Article
There is a general lack of information related to the spatial structure and functioning of marine ecosystems considering seasonality. Here we modelled the biomass distribution of eight commercial marine species in the northwestern Mediterranean Sea during winter and summer. We hypothesised that the seasonal differences of the water column and the s...
Article
Full-text available
Improving the knowledge on the biology, ecology and distribution of marine resources exploited by fisheries is necessary to achieve population recovery and sustainable fisheries management. European hake (Merluccius merluccius) is one of the most important target species in the Mediterranean Sea and is largely overexploited by industrial fisheries....
Article
Knowing the displacement capacity and mobility patterns of industrially exploited (i.e., fished) marine resources is key to establishing effective conservation management strategies in human-impacted marine ecosystems. Acquiring accurate behavioral information of deep-sea fished ecosystems is necessary to establish the sizes of marine protected are...
Article
Seafloor multiparametric fibre-optic-cabled video observatories are emerging tools for standardized monitoring programmes, dedicated to the production of real-time fishery-independent stock assessment data. Here, we propose that a network of cabled cameras can be set up and optimized to ensure representative long-term monitoring of target commercia...
Article
Full-text available
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Data
Full-text available
Larval mortality is a keystone ecological factor for many benthic octopus since it mostly occurs before their settlement in the sea bottom as benthic juveniles. The literature had revealed that records of adult animals with morphological abnormalities (teratologies) are fewer in species with complex life cycle than in those with direct development....
Article
Full-text available
Larval mortality is a keystone ecological factor for many benthic octopus since it mostly occurs before their settlement in the sea bottom as benthic juveniles. The literature had revealed that records of adult animals with morphological abnormalities (teratologies) are fewer in species with complex life cycle than in those with direct development....
Article
The North Atlantic deep-water polynoid worm Neopolynoe chondrocladiae is involved in an exceptional symbiotic relationship with two hosts, the carnivorous sponges Chondrocladia robertballardi and Chondrocladia virgata. While this is an obligate symbiotic relationship, its real nature is unclear. We used a multidisciplinary approach to narrow down t...
Article
We investigated the feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean living in two habitats, the shelf break and the continental slope, throughout the year, by combining two methodological approaches, stomach content characterization and stable isotope analyses. Stomach content indicated that blue whiting mainly fe...
Article
Understanding the trophic ecology of marine predators is pivotal to assess their ecological role in the ecosystems and develop management actions. Despite the ecological importance of predatory pelagic fish species, the trophic role that individual species play within marine communities in many marine basins, such the Mediterranean Sea, remains unc...
Article
Full-text available
The increasing urbanisation of the natural environment affects species differently. While most species cannot cope with these human impacts, others can persist or may even be favoured in these anthropogenic ecosystems. Among the different urban-adapted wildlife species, the populations of different species of opportunistic gulls have increased in u...
Article
Full-text available
Exploitative competition implies an indirect interaction in which a resource exploited by one species is not available for another; e.g., when species share diet or habitat. It plays a key role in community structure and dynamics. Here we evaluated the niche overlap between the exotic aoudad (Ammotragus lervia) and the native Iberian ibex (Capra py...
Article
Lead intoxication is an important threat to human health and a large number of wildlife species. Animals are exposed to several sources of lead highlighting hunting ammunition and lead that is bioavailable in topsoil. Disentangling the role of each in lead exposure is an important conservation issue, particularly for species potentially affected by...
Article
Marine ecosystems are complex socio-ecological systems where sustainable solutions can be best gained by satisfying both conservation and socioeconomic demands. Concretely, the Mediterranean Sea is facing a huge demand of resources and marine activities while hosting abundant and unique biodiversity. It is considered an important elasmobranch hotsp...
Article
Variability in body condition and energy storage has important implications for fish recruitment and ecosystem structure. Understanding strategies for energy allocation to maintenance, reproduction and growth is essential to evaluate the state of the fish stocks. In this study, we address the energetics dynamics of the annual cycle of anchovies (En...
Article
Full-text available
Since 2014, the global land and sea surface temperature has scaled 0.23 °C above the decadal average (2009–2018). Reports indicate that Mediterranean Sea temperatures have been rising at faster rates than in the global ocean. Oceanographic time series of physical and biogeochemical data collected from an onboard and a multisensor mooring array in t...
Article
Full-text available
Background: Human activities have profoundly altered the spatio-temporal availability of food resources. Yet, there is a clear lack of knowledge on how opportunistic species adapt to these new circumstances by scheduling their daily rhythms and adjust their foraging decisions to predicable patterns of anthropic food subsidies. Here, we used nearly...
Article
Full-text available
Research focused on evaluating how human food subsidies influence the foraging ecology of scavenger species is scarce but essential for elucidating their role in shaping behavioral patterns, population dynamics, and potential impacts on ecosystems. We evaluate the potential role of humans in shaping the year‐round distribution and habitat use of in...
Article
Knowledge of marine predator trophic ecology is essential for defining their ecological role and trophic position in ecosystems. Based on their trophic habits, sharks and batoids occupy higher and medium trophic levels in the food webs, although differences in the trophic preferences exist between species. They are important organisms in marine eco...
Conference Paper
Full-text available
Average global land and ocean surface temperature has stepped up since 2014 above the average. The Mediterranean Sea temperature follows this global trend. The effects of the warming on coastal areas in the Mediterranean are worrying, as they are biodiversity hotspots. Atypical warmer summer periods in the Mediterranean have been pointed out as pot...
Article
Human activities can affect species in different ways, with some species being unable to cope with the human-driven changes, while others can persist and even benefit from these alterations. The main factors explaining the population dynamics of successful species include their use of food resources derived from human activities and the adaptabilit...
Article
Information on the spatial patterns and habitat preferences of marine species is key to understand the functioning of marine ecosystem and to manage and protect marine resources efficiently. However, the study of spatial patterns of marine ecosystems is challenging because they are dynamic environments that can vary seasonally. We analysed the spat...
Conference Paper
Los cefalópodos son una clase de moluscos con un rol importante en la estructura de los ecosistemas marinos, puesto que actúan simultáneamente tanto como presas como depredadores. Están caracterizados por poseer un cuerpo musculoso que les convierte en recurso alimentario para muchos depredadores. Sin embargo, también están provistos de estructuras...
Article
Tetrabromobisphenol A (TBBPA), a brominated flame retardant used in synthetic polymers and electronics, is present in the aquatic environment and recent evidence suggests it can be potentially biomagnified in the marine ecosystem. However, the toxicity of TBBPA in the marine biota has not been investigated in detail. In this study we aimed to under...
Article
Full-text available
Wildlife that exploit human-made habitats hosts and spreads bacterial pathogens. This shapes the epidemiology of infectious diseases and facilitates pathogen spill-over between wildlife and humans. This is a global problem, yet little is known about the dissemination potential of pathogen-infected animals. By combining molecular pathogen diagnosis...
Article
The recent northward expansion of the round sardinella Sardinella aurita in the Mediterranean Sea has been documented as a consequence of rising sea temperature. At the same time, declines in sardine and anchovy biomass have been observed in the NW Mediterranean Sea, necessitating an assessment of whether the expansion of round sardinella may affec...
Poster
Full-text available
Blue whiting, Micromesistius poutassou, is a gadoid widely distributed in the North-Atlantic Ocean and Mediterranean Sea. Fluctuations in the abundance of adult population have been related to interannual variations in winter primary production that may determine changes in the survival of early life stages. In order to approach this subject, we st...
Data
This paper is open access. It is available at: https://academic.oup.com/mbe/advance-article/doi/10.1093/molbev/msz090/5480301 The final pdf is still not available. Thank you for your interest. Cheers, JUAN
Data
This paper is open access. It is available at: https://academic.oup.com/mbe/advance-article/doi/10.1093/molbev/msz090/5480301 The final pdf is still not available. Thank you for your interest. Cheers, JUAN
Article
Increasing interest in the acquisition of biotic and abiotic resources from within the deep sea (e.g. fisheries, oil-gas extraction, and mining) urgently imposes the development of novel monitoring technologies, beyond the traditional vessel-assisted, time-consuming, high-cost sampling surveys. The implementation of permanent networks of seabed and...
Article
Full-text available
Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many traits are underpinned by polygeny and/or incomplete dominance, where the hybrid phenotype is an additive blend of parental charact...
Article
We examined the feeding ecology (diet, trophic width and trophic position) of five demersal shark species ( Mustelus mustelus Linnaeus, 1758, Galeus melastomus Rafinesque, 1810, Scyliorhinus canicula Linnaeus, 1758, Scyliorhinus stellaris Linnaeus, 1758, Squalus blainville , Risso, 1826) coexisting in the north-eastern Aegean Sea (around Gökçeda Is...