Jorge Fontes

Jorge Fontes
University of the Azores at Horta Department Oceanography and fisheries

PhD in Marine Ecology

About

84
Publications
35,786
Reads
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1,197
Citations
Introduction
Azores islands native, PhD in Marine Ecology. My interest include: Reef and seamount fish ecology and MPA design, habitat use of adults. Control of marine invasive algae Spatial ecology and connectivity of seamount fish populations and marine megafauna (mobulas, tunas and sharks) with focus on new biologging customized and classic tools. Marine robotic technology applied to marine science. Extensive filed work experience, over 1500 dives, fishing tagging, biotelemetry, marine robotics, etc.
Additional affiliations
September 2013 - present
University of the Azores
Position
  • Research Assistant
January 2004 - June 2008
University of California, Santa Barbara
Position
  • PhD Student
Description
  • I developed most of the my otolith micro-chemistry (ICP-MS) work and data analysis at the university of California and preparation of recruitment and connectivity related publications, under the supervision of Dr Jennifer Caselle and Dr Robert Warner.

Publications

Publications (84)
Article
Full-text available
Ecological connections between surface waters and the deep ocean remain poorly studied despite the high biomass of fishes and squids residing at depths beyond the euphotic zone. These animals likely support pelagic food webs containing a suite of predators that include commercially important fishes and marine mammals. Here we deploy pop-up satellit...
Article
Full-text available
The effectiveness of marine reserves for highly mobile reef fishes such as jacks and trevallies is normally assumed to be small, even though we generally lack the understanding of their long-term movement patterns. In this work, we combined the analysis of multi-year landings and underwater visual census with acoustic telemetry to investigate the l...
Article
Full-text available
Predicting recruitment fluctuations of fish populations remains the Holy Grail of fisheries science. While previous work has linked recruitment of reef fish to environmental variables including temperature, the demonstration of a robust relationship with productivity remains elusive. Despite decades of research, empirical evidence to support this c...
Article
Marine reserves across different eco-regions and habitats have proven to benefit exploited fish populations within their borders. There is also mounting evidence, mostly from continental shelf regions, that such positive effects will depend on the species ecological traits (e.g. mobility) and on the characteristics of the reserves (e.g. design, age...
Article
Full-text available
Biologging technology has provided scientists with unprecedented tools to investigate the ecology and behaviour of marine animals, but tag deployment and attachment methods have lagged behind. Electronic tagging of elasmobranchs still essentially involves implanting anchors or drilling the fins of restrained animals. Here, we present two new non-in...
Article
Many large marine predators make excursions from surface waters to the deep ocean below 200 m. Moreover, the ability to access meso- and bathypelagic habitats has evolved independently across marine mammals, reptiles, birds, teleost fishes, and elasmobranchs. Theoretical and empirical evidence suggests a number of plausible functional hypotheses fo...
Presentation
Seamounts are biodiversity hotspots for pelagic and oceanic species like the sickle fin devil ray, Mobula tarapacana. As such, this endangered species (IUCN) aggregates every summer at Princess Alice Seamount and Ambrosio Seamount in the Azores archipelago . The aim of our research was to investigate the aggregation at Princess Alice using a non-in...
Article
Full-text available
The deep ocean ecosystem hosts high biodiversity and plays a critical role for humans through the ecosystem services it provides, such as fisheries and climate regulation. However, high longevity, late reproduction, and low fecundity of many organisms living in the deep ocean make them particularly vulnerable to fishing and climate change. A better...
Article
Full-text available
106,107 ✉ replying to A. V. Harry & J. M. Braccini Nature https://doi.org/10.1038/s41586-021-03463-w (2021) Our global analysis 1 estimated the overlap and fishing exposure risk (FEI) using the space use of satellite-tracked sharks and longline fishing effort monitored by the automatic identification system (AIS). In the accompanying Comment, Harry...
Article
This article is a response to Murua et al.'s Matters Arising article in Nature, "Shark mortality cannot be assessed by fishery overlap alone," which arose from arising from N. Queiroz et al. Nature https://doi.org/10.1038/s41586-019-1444-4 (2019).
Article
Full-text available
Deep‐sea exploration relies on cutting‐edge technology, which generally requires expensive instruments, highly specialised technicians and ship time. The increasing need to gather large‐scale data on the distribution and conservation status of deep‐sea benthic species and habitats could benefit from the availability of low‐cost imaging tools to fac...
Article
Full-text available
Climate-driven expansions of ocean hypoxic zones are predicted to concentrate pelagic fish in oxygenated surface layers, but how expanding hypoxia and fisheries will interact to affect threatened pelagic sharks remains unknown. Here, analysis of satellite-tracked blue sharks and environmental modelling in the eastern tropical Atlantic oxygen minimu...
Article
The spatial dynamics of marine populations are shaped by habitat availability, environmental variability and individual interactions, particularly when multiple species share limited habitat such as patchy offshore reefs. The yellowmouth barracuda Sphyraena viridensis and the almaco jack Seriola rivoliana are the 2 most abundant bentho-pelagic reef...
Article
Fisherman have known and explored the association between tuna and whale sharks for centuries. Just as in the past, present day industrial fishers search for the presence of whale shark as cue to locate tuna schools. These whale shark-tuna associations have been usually assumed to result from the same ecological drivers that govern the attraction o...
Article
Devil rays are considered pelagic filter-feeders but direct observation of their foraging in the wild is very scarce and their feeding ecology is known essentially from indirect methods. On September 2018, a group of 16 sicklefin devil rays were observed preying on bait balls of longspine snipefish (Macroramphosus scolopax), together with their ass...
Article
Full-text available
The increasing public perception that marine megafauna is under threat is an outstanding incentive to investigate their essential habitats (EMH), their responses to human and climate change pressures, and to better understand their largely unexplained behaviors and physiology. Yet, this poses serious challenges such as the elusiveness and remotenes...
Article
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Broadbill swordfish (Xiphias gladius) is a key species in commercial fisheries, but management efforts continue to be hindered by data gaps in their basic biology, including ongoing debate over stock boundaries and movement between management zones. We deployed 20 pop-up satellite archival transmitting (PSAT) tags on juvenile swordfish in the Azore...
Article
Full-text available
Squid are mobile, diverse, ecologically important marine organisms whose behavior and habitat use can have substantial impacts on ecosystems and fisheries. However, due in part to the inherent challenges of monitoring squid in their natural marine environment, fine-scale behavioral observations of these free-swimming, soft-bodied animals are rare....
Article
Full-text available
Effective ocean management and conservation of highly migratory species depends on resolving overlap between animal movements and distributions and fishing effort. Yet, this information is lacking at a global scale. Here we show, using a big-data approach combining satellite-tracked movements of pelagic sharks and global fishing fleets, that 24% of...
Book
Full-text available
Os peixes constituem o mais diverso grupo de vertebrados. Das mais de 32.000 espécies conhecidas, novas são descobertas quase diariamente. A missão deste livro pioneiro é dar a conhecer os peixes costeiros mais comuns de São Tomé e Príncipe, as dimensões que atingem, habitats e profundidades em que vivem, comportamentos, colorações e padrões que ex...
Article
Full-text available
The common dolphinfish (Coryphaena hippurus) is an epipelagic, mid-trophic level, highly migratory species distributed throughout the world's tropical and subtropical oceans in waters greater than 20 C. Life-history variables, migratory behaviour, and genetic markers have been used to define major stocks in the central Atlantic Ocean and Mediterran...
Presentation
Full-text available
Biologging technology has provided scientists with unprecedented tools to investigate the ecology and behaviour of marine animals, but tag deployment and attachment methods have lagged behind. Electronic tagging of elasmobranchs still essentially involves implanting anchors or drilling the fins of restrained animals. On the other hand, most biologg...
Presentation
A wide diversity of elasmobranch occurs in the Azores, a Portuguese archipelago located by the Mid-Atlantic Ridge. Subject to a commercial fishery for their liver oil until the late 90s, declines in species abundance has led the EU to progressively implement and strengthen catch limits of deep-water sharks, until a TAC 0 was set in 2010. Nowadays,...
Article
Full-text available
We analyzed three acoustic telemetry datasets of single tagged individuals to argue that, at a time of data deficiency, “solo datasets” have the ability to uncover singular patterns. Here, a greater amberjack (Seriola dumerili), a female school shark (Galeorhinus galeus) and a Salema, (Sarpa salpa) provided relatively long and insightful individual...
Poster
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We present two alternative solutions for short term deployments of external tags and sensors on two species of elasmobranchs
Article
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Synchronous reproduction has been reported in many tropical damselfishes, and it appears that temperature is the main driver of synchrony at these latitudes. However, reproductive synchrony and its relation to temperature is less well understood in temperate damselfish. The endemic Azores chromis (Chromis limbata) was chosen as a study species to a...
Article
Full-text available
This study reports six new types of cleaning interactions among tropical reef fish species at São Tomé Island, and confirms previously reported interactions for this area. Spicara melanurus was recorded as a cleaner for the first time, and Abudefduf saxatilis was confirmed in this role, following reports from the Southwest Atlantic. Individuals bel...
Article
Full-text available
The yellowmouth barracuda Sphyraena viridensis, a highly mobile predator, is considered a migratory seasonal visitor to the Azores Islands by local fishers. This perception is challenged here through a combined analysis of multi-annual commercial landings, underwater visual census and telemetry data from acoustically tagged fish to investigate the...
Article
Postsettlement spillover from marine protected areas (MPAs) can support adjacent fished populations and has been subject of many scientific studies. The larval subsidy effect, on the contrary, is more challenging to study and less demonstrated, although it, arguably, provides key benefits for fisheries. We modeled and predicted the spatial distribu...
Data
Diagnostics associated with the model regressing rainbow wrasse recruitment and cholorophyll-a. (DOCX)
Technical Report
Full-text available
In July 2016, started “EcoDiveAz”, a 3 years project from IMAR-MARE & the University of the Azores, funded by the regional government through the Açores2020-FEDER program. This project was designed to contribute to the sustainable growth and management of blue sharks (Prionace glauca) and mobula rays (Mobula tarapacana) diving in the Azores. This f...
Poster
Full-text available
O póster “Peixes Marinhos comerciais de São Tomé e Príncipe” apresenta as espécies de peixes mais comuns nos desembarques de pesca artesanal da região. Cada fotografia da espécie vem acompanhada com o seu nome científico, nome popular utilizado pelos pescadores, nome em inglês e tamanho máximo que atinge (em centímetros). Promovido pela Flying Shar...
Article
Full-text available
Vasco-Rodrigues N., Fontes J., Bertoncini Á.A. 2016. Ten new records of marine fishes for São Tomé, West Africa. Acta Ichthyol. Piscat. 46 (2): 123–129. Abstract. Three chondrichthyes: Rhincodon typus Smith, 1828; Mobula tarapacana (Philippi, 1892); and Mobula thurstoni (Lloyd, 1908), and seven teleosts: Beryx decadactylus Cuvier, 1829; Peristedion...
Article
Full-text available
The MORPH project (FP 7, 2012–2016) is aimed at developing efficient methods and tools to map the underwater environment in situations that are not easily addressed by current technology. Namely, the missions that are of interest are those that involve underwater surveying and marine habitat mapping of rugged terrain and structures with full 3D com...
Conference Paper
Full-text available
Changes in the distribution the tuna species were evident with the centre of gravity found closest to the whale shark aggregations in the latter years (2008 in particular) and was independent of fishing effort. Between 2008 and 2011 for the areas where whale sharks have been found we find the associated whale shark fishing events have significantly...
Conference Paper
We present a classification framework to detect underwater terrain deformations commonly caused by marine species in real time during AUV surveys. The method uses two classifiers in a hierarchical manner to overcome the fact that there are no substantial datasets in the literature about underwater terrain and the creation of one would involve a gre...
Chapter
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The green algae C. webbiana (Figure 12.1) was first collected in Faial in 2002. As it was rare and unfamiliar, no special attention was given. Only in 2005, after a significant increase in the total area it covered, a research plan to investigate its biology and ecology was implemented (Amat et al., 2008). Even though this species is not considere...
Article
Full-text available
Protection inside marine reserves and the desired 'reserve effect' depend directly on the home range and sedentary behaviour of fishes throughout their lives. Benthic territorial predators are typically seen as major candidates to beneficiaries, but empirical evidence of short-versus long term residency is still surprisingly rare. We studied the in...
Conference Paper
Full-text available
As global fishing effort increasingly expands into deeper water, concerns exist over the ability of deep-sea cartilaginous fishes to sustain fisheries such pressure, due to intrinsically low rates of population recovery, the lowest levels observed to date. Once a stock has been depleted it will take decades, and potentially centuries, before it wil...
Article
Full-text available
Soft-bodied marine invertebrates comprise a keystone component of ocean ecosystems; however, we know little of their behaviors and physiological responses within their natural habitat. Quantifying ocean conditions and measuring organismal responses to the physical environment is vital to understanding the species or ecosystem-level influences of a...
Conference Paper
Full-text available
The MORPH project (FP 7, 2012–2016) advances a novel concept of an underwater robotic system composed of a number of spatially separated mobile robot-modules, carrying complementary resources. Instead of being physically coupled, the modules are connected via communication links that allow a limited flow of information among them. Without rigid lin...
Article
Full-text available
Concentrations of V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Cd and Pb were determined in muscle, liver and gonads of two ecologically contrasting fishes, Helicolenus dactylopterus (benthic) and Pagellus bogaraveo (benthopelagic). Elevated concentrations of As, Se and Cd found in tissues of both species appear to mirror the contribution of volcanic activit...
Article
Full-text available
Spatial structuring and segregation by sex and size is considered to be an intrinsic attribute of shark populations. These spatial patterns remain poorly understood, particularly for oceanic species such as blue shark (Prionace glauca), despite its importance for the management and conservation of this highly migratory species. This study presents...
Article
Full-text available
It has been speculated that some deep-sea fishes can display large vertical migrations and likely doing so to explore the full suite of benthopelagic food resources, especially the pelagic organisms of the deep scattering layer (DSL). This would help explain the success of fishes residing at seamounts and the increased biodiversity found in these f...
Article
Full-text available
Seven coastal fish species are newly reported for the remote north Atlantic archipelago of the Azores: Mediterranean sand eel Gymnammodytes cicerelus, bar jack Caranx ruber, two-banded seabream Diplodus vulgaris, bastard grunt Pomadasys incisus, unicorn leatherjacket filefish Aluterus scriptus and longspined porcupinefish Diodon holacanthus. The oc...
Conference Paper
Full-text available
The MORPH project (FP 7, 2012-2016) aims at the development of efficient methods and tools to map the underwater environment in situations that defy existing technology. Namely, missions that involve underwater surveying and marine habitat mapping of rugged terrain and structures with full 3D complexity, including near-vertical cliffs. Potential ap...