Leandro Bugoni

Leandro Bugoni
Universidade Federal do Rio Grande (FURG) | FURG · Institute of Biological Sciences - ICB

PhD

About

163
Publications
52,407
Reads
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2,947
Citations
Additional affiliations
May 2010 - present
Universidade Federal do Rio Grande (FURG)
Position
  • Professor (Full)
September 2005 - September 2008
University of Glasgow
Position
  • PhD Student

Publications

Publications (163)
Article
Dead stranded sea turtles were recovered and examined to determine the impact of anthropogenic debris and fishery activities on sea turtles on the coast of Rio Grande do Sul State, Brazil. Esophagus/stomach contents of 38 juvenile green Chelonia mydas, 10 adults and sub-adults loggerhead Caretta caretta, and two leatherback Dermochelys coriacea tur...
Article
Seabird species within a community are expected to have distinct trophic niches according to foraging methods and body size, but some seabirds exploit fishery waste which can be quite distinct from natural foods. Even in the presence of fishery discards we hypothesize that a pelagic seabird community is structured according to body size, feeding me...
Article
Full-text available
Skewed adult sex ratio (ASR) has been proposed as a common pattern in birds, frequently biased towards males and with larger biases in globally threatened species. In albatrosses and petrels, it has been suggested that differential mortality of one gender in fisheries is caused either by sexual size dimorphism giving males a competitive advantage,...
Article
Full-text available
Satellite transmitters were used to determine the marine habitat utilization and fishery overlap of wintering spectacled petrels Procellaria conspicillata in the southwestern Atlantic Ocean in 2006 and 2007. Kernel density analysis of tracked birds demonstrated intense use of waters in the Brazilian Exclusive Economic Zone, from 26 to 31 degrees S,...
Article
Full-text available
Organisms tend to exhibit phenotypes that can be shaped by climate, commonly demonstrating clinal variations along latitudinal gradients. In vertebrates, air temperature plays a major role in shaping body size in both ectothermic and endothermic animals. However, additional small-scale environmental factors can also act as selection pressures in th...
Article
Highly mobile organisms can transport nutrients and energy among distinct ecosystems, such as between oceanic foraging areas and terrestrial breeding sites. Seabirds are great nutrient carriers and potentially play a key role in the maintenance of trophic webs on islands. In this study, we assessed three dimensions of marine nutrient dissipation—ho...
Preprint
Full-text available
A major barrier to advancing ornithology is the systemic exclusion of professionals from the Global South. A recent special dossier, Advances in Neotropical Ornithology, and a shortfalls analysis therein, unintentionally followed a long-standing pattern of highlighting individuals, knowledge, and views from the Global North, while largely omitting...
Preprint
Due to their high mobility, large vertebrates are efficient carriers of allochthonous matter and energy. Waterbirds congregate in breeding colonies, while feed in surrounding aquatic and terrestrial areas, promoting nutritional pulses to nutrient-poor environments. In southern Brazil, a swamp forest on an estuarine island is used by waterbirds for...
Article
Moult is an energetically demanding period, during which flight may be impaired and foraging ranges may become constrained. During the non‐breeding period, Great Ardenna gravis and Sooty A. grisea Shearwaters migrate from South Atlantic breeding colonies to aggregate at North Atlantic feeding grounds. We investigated whether both shearwater species...
Article
Food availability and oceanographic conditions drive the distribution and movement of marine vertebrates. Tracking efforts towards seabirds usually focus on their breeding period, tagging adults in colonies. In this study, we tracked four juvenile and one adult Magellanic penguin (Spheniscus magellanicus) with satellite transmitters. These individu...
Article
Human-induced rapid environmental changes can disrupt habitat quality in the short term. A decrease in quality of habitats associated with preference for these over other available higher quality is referred as ecological trap. In 2015, the Fundão dam containing iron mining tailings, eastern Brazil, collapsed and released about 50 million cubic met...
Article
Full-text available
Urbanization is a major form of landscape transformation that often results in habitat degradation and loss for birds. However, effects on avian populations are trait- and context-dependent, and persistence at urban patches is likely to be a function of habitat availability at the landscape scale. Here, we aimed to assess the breeding performance a...
Article
Nasal mites of the family Rhinonyssidae are parasites living in the respiratory system of birds. To date there were no record of these mites from representatives of the order Procellariiformes, a numerous grouping of exclusively marine birds that includes albatrosses, petrels, storm-petrels and shearwaters. The paper describes two new species of th...
Article
Full-text available
Limited work to date has examined plastic ingestion in highly migratory seabirds like Great Shearwaters ( Ardenna gravis ) across their entire migratory range. We examined 217 Great Shearwaters obtained from 2008–2019 at multiple locations spanning their yearly migration cycle across the Northwest and South Atlantic to assess accumulation of ingest...
Article
Full-text available
The Pterodroma feae complex comprises three cryptically looking gadfly petrels (Cape Verde Pterodroma feae, Desertas Pterodroma deserta, and Zino’s Pterodroma madeira), once regarded as a single species, the Fea’s Petrel, P. feae. Recent research using geolocators to track and understand their movements away from breeding grounds demonstrated that...
Article
Full-text available
Great-winged Petrel Pterodroma macroptera is currently considered uncommon in the south-west Atlantic Ocean. However, via a compilation of all recent records available, we found evidence of a regular, wider distribution from breeding colonies in Tristan da Cunha and Gough towards South America. We review these records, report a new beach stranding...
Article
Full-text available
Individual variability within a population and the eventual repeatability across time and space may provide stability in a population facing environmental changes, by affecting individuals differently. Thus, the variability and repeatability of behaviours, habitats used, niches and migratory pathways could play an important role. Trindade petrels (...
Article
Full-text available
Considerable progress in our understanding of long-distance migration has been achieved thanks to the use of small geolocator devices (GLS). The tracking of resident or short-distance migrant animals remains however challenging because geolocation errors are substantial and difficult to estimate. This study aims to examine the sex-specific marine s...
Article
Green sea turtles (Chelonia mydas) switch habitats during their development, moving from pelagic to neritic areas and then commuting between nesting and foraging grounds during adulthood. Due to their predominantly coastal habitats, they are under a range of anthropogenic threats. We monitored turtles incidentally captured in fishing weirs in Ceará...
Article
en The central-peripheral hypothesis states that the demographic performance of a species decreases from the centre to the edge of its range. Peripheral populations are often smaller and tend to occur under different and suboptimal conditions from those of core populations. Peripheral populations can also coexist during part of their annual cycle w...
Article
The use of areas by native and non-native herbivores in sympatry has frequently led to conflicts between farmers and native animals. Dietary studies integrating methodologies usually provide a better quantified understanding of resource sharing and dietary overlap. This study aims to evaluate diet and niche overlap among three species that occur in...
Preprint
Full-text available
Background Considerable progress in our understanding of long-distance migration has been achieved thanks to the use of small lightweight geolocator devices. Such global location sensors (GLS) are particularly suitable for studying non-breeding movement and behaviour due to their small size and low energy consumption allowing multiyear deployment....
Preprint
Full-text available
Considerable progress in our understanding of long-distance migration has been achieved thanks to the use of small lightweight geolocator devices (GLS). Errors of geolocation are however important, difficult to estimate, have a complex structure leading to poor precision and accuracy. Thus, the study of short-distance migrants or resident birds rem...
Article
Full-text available
Vertebrates introduced in non-native habitats have contributed to several extinctions in the modern era, with direct effects mainly over birds, mammals and reptiles on islands. Fernando de Noronha Archipelago, in tropical Atlantic Ocean, is a World Heritage natural site, holding the most diverse breeding seabird community off Brazil, in addition to...
Article
Full-text available
Large Procellariiformes (albatrosses and petrels) constitute a highly threatened group of birds, for which bycatch in fisheries is the most prevalent threat. At-sea intentional killing and post-capture, handling-related injuries, remain poorly understood menaces. Here, we report fishermen off southern Brazil trying to reduce bait depredation in pol...
Article
As top predators in marine environments, seabirds frequently respond to the presence of their main prey, and both predators and prey are usually associated with specific environmental features. We investigated the variability in the presence and density of flying seabirds (mostly Procellariiformes and Charadriiformes) and Magellanic penguins Spheni...
Article
Full-text available
Investigations of the genetic structure of populations over the entire range of a species yield valuable information about connectivity among populations. Seabirds are an intriguing taxon in this regard because they move extensively when not breeding, facilitating intermixing of populations, but breed consistently on the same isolated islands, rest...
Article
Full-text available
An ecological niche has been defined as an n-dimensional hypervolume formed by conditions and resources that species need to survive, grow, and reproduce. In practice , such niche dimensions are measurable and describe how species share resources, which has been thought to be a crucial mechanism for coexistence and a major driver of broad biodivers...
Poster
Full-text available
The South American Painted snipe – Nycticryphes semicollaris is a secretive shorebird endemic to South America that inhabits lowlands, high saltmarshes and flooded grasslands. Since its crepuscular behavior and habitat used, its biology is poorly known, and Feather molt and breeding strategy associated with seasonal movements remains elusive. By Mo...
Article
Full-text available
The identification of geographic areas where the densities of animals are highest across their annual cycles is a crucial step in conservation planning. In marine environments, however, it can be particularly difficult to map the distribution of species, and the methods used are usually biased towards adults, neglecting the distribution of other li...
Article
There is a paucity of data on seabird assemblages at sea in tropical waters, particularly in the western Atlantic Ocean, such as distribution and species occurrence. Here, we describe the seabird assemblage recorded near the Amazon River mouth, the greatest freshwater input in the marine environment globally, in North Brazil. Through two ship surve...
Conference Paper
Full-text available
Aves são importantes sentinelas, sensíveis à contaminação ambiental. Chumbo (Pb) e cádmio (Cd), elementos-traço não essenciais, podem causar impactos biológicos negativos, como efeitos neurológicos e reprodutivos e até morte. Este estudo avaliou concentrações de Pb e Cd em tecidos da garça-branca-grande (Ardea alba) e do colhereiro (Platalea ajaja)...
Article
Bycatch in gillnet fisheries is one of the main threats to several penguin species. Magellanic penguins (Spheniscus magellanicus) are caught by gillnets during their wintering in southern Brazil. However, current information is based only on a small number of sets observed during a single fishing trip. This study assesses bycatch rates of bottom an...
Data
Scientists have long been trying to understand why the Neotropical region holds the highest diversity of birds on Earth. Recently, there has been increased interest in morpho- logical variation between and within species, and in how climate, topography, and anthropogenic pressures may explain and affect phenotypic variation. Because morphological d...
Article
Full-text available
Intraspecific plumage polymorphism in seabirds is often attributed to advantages in foraging activities and escape from predators, but its role in sexual selection is not well understood. The Trindade petrel (Pterodroma arminjoniana) presents morphs varying from pale to whole dark, with no apparent sexual size dimorphism (SSD). In this study, we te...
Article
Full-text available
Scientists have long been trying to understand why the Neotropical region holds the highest diversity of birds on Earth. Recently, there has been increased interest in morphological variation between and within species, and in how climate, topography and anthropogenic pressures may explain and affect phenotypic variation. Because morphological data...
Article
Full-text available
Niche theory predicts that sympatric species should differ in some ecological characteristic, to allow co-existence and reduce competition for key resources. Food is critical on wintering grounds and stopover areas for migratory species that need to accumulate reserves in order to complete their migration. Wetlands of the Rio Grande do Sul coastal...
Conference Paper
Full-text available
As aves são um grupo com grande importância ecológica, pois possuem um papel fundamental na dinâmica de diversos ecossistemas. Conhecer a composição da avifauna de uma região é um passo fundamental para a conservação da biodiversidade, o que pode ser feito através de capturas com redes de neblina. Neste contexto, o presente estudo identificou a com...
Chapter
Full-text available
Although highly mobile, seabirds are highly philopatric, shedding light on the factors disrupting gene flow in this group. The brown booby (Sula leucogaster) is a strictly marine bird occurring in all ocean basins and with strong phylogeographic structure. In the present study, brown boobies breeding in the Brazilian archipelagos of Saint Peter and...
Article
Some top predators couple their migration with the migration of their main prey. Magellanic penguins, Spheniscus magellanicus, migrate north from their Patagonian colonies during their non-breeding period, supposedly following the Argentine anchovy, Engraulis anchoita, a keystone species and their main prey item in the southwestern Atlantic Ocean....
Article
Full-text available
We present a new update of the list of birds of the state of Rio Grande do Sul, Brazil, based on a thorough review of new records and evidences accumulated from February 2011 to July 2017. This is the fifth update since the first compilation based on a reasonably complete geographic coverage of the state, published by William Belton in 1978, and th...
Article
Full-text available
Aim Understanding the mechanisms of population isolation in marine top predators is challenging owing to their high mobility and the inherent difficulty in quantifying oceanographic variables. In this study, the worldwide distributed brown booby Sula leucogaster was used to test the potential role of isolation by distance (IBD) and isolation by env...
Article
Full-text available
Identifying associations between phenotypes and environmental parameters is crucial for understanding how natural selection acts at the individual level. In this context, genetically isolated populations can be useful models for identifying the forces selecting fitness-related traits. Here, we use a comprehensive dataset on a genetically and ecolog...
Article
Full-text available
Penguins are the most threatened group of seabirds after albatrosses. Despite being regularly captured in fishing gear, the threat to penguins, as a group, has not yet been assessed. We reviewed both published and grey literature to identify the fishing gear types that penguins are most frequently recorded in, the most impacted species and, for the...
Article
Full-text available
Seabirds breeding in tropical environments experience high energetic demands, when foraging in an oligotrophic environment. The globally threatened Trindade petrel Pterodroma arminjoniana has its largest colony in Trindade Island (20°30′S–29°19′W) inside the oligotrophic South Atlantic Subtropical Gyre. Diet sampling methods, geolocator tracking an...
Conference Paper
Full-text available
Ambientes marinhos são susceptíveis à poluição devido ao transporte, por meio das massas de ar e água, de contaminantes aquáticos oriundos de centros urbanos costeiros. Metais, como cádmio (Cd) e chumbo (Pb), são considerados contaminantes críticos nos ambientes aquáticos. São elementos não essenciais, não biodegradáveis e tóxicos, mesmo em baixas...
Conference Paper
Full-text available
O ambiente marinho é o destino final de diversos contaminantes de origem antrópica , tais como o cádmio (Cd) e o chumbo (Pb), metais não essenciais à vida e tóxicos para diversos animais, incluindo as aves. O petrel-de-trindade Pterodroma arminjoniana é a única espécie do gênero que nidifica em território brasileiro e é classificada como vulnerável...
Article
Full-text available
Knowledge of marine biodiversity has been increased by combining modern and traditional tools that render species identification an accurate process. In addition, understanding the ecological differences between closely related species is critical for effective conservation. Calonectris (Aves: Procellariidae) is a four-species genus of phenotypical...
Article
Full-text available
Aim: Anthropogenic activities alter and constrain the structure of marine ecosystems with implications for wide-ranging marine vertebrates. In spite of the environmental importance of vast oceanic ecosystems, most conservation efforts mainly focus on neritic areas. To identify relevant oceanic areas for conservation, we assessed the year-round spat...
Article
Full-text available
The marine habitat use of olive ridley sea turtles (Lepidochelys olivacea) from northeastern Brazil was analyzed via stable isotope analysis (SIA). Blood (red blood cells and serum), epidermis and scute samples from 46 nesting females were collected for SIA of carbon (δ13C) and nitrogen (δ15N) to infer the habitats used at distinct time windows. Su...
Article
Full-text available
Seabirds are of considerable conservation significance due to their key role in ecosystems and their generally high level of threat, especially from invasive species in breeding sites and as a result of bycatch during commercial fishing activities. We examined the genetic diversity, evidence for a bottleneck, and effective population size (Ne) of R...
Article
Pollution from anthropogenic marine debris (AMD) is currently the most widely distributed and lasting anthropic impact in the marine environment, affecting hundreds of species, including all sea turtles. In this study, the patterns of AMD distribution along the gastrointestinal tract (GT) and their relationship with obstructions and faecalomas in 6...