Luiz Gustavo R. Oliveira-Santos

Luiz Gustavo R. Oliveira-Santos
Universidade Federal de Mato Grosso do Sul · Programa de Pós-Graduação em Ecologia e Conservação (PPGEC)

PhD

About

95
Publications
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2,055
Citations
Additional affiliations
March 2013 - July 2014
Federal University of Santa Catarina
Position
  • PostDoc Position

Publications

Publications (95)
Article
Full-text available
Species’ niche depends on several ecological and evolutionary factors. Phylogenetically close species may present niche conservatism, retaining their ancestral ecological characteristics. Alternatively, in a situation of limited resources, species can differentiate themselves through changes in their ecological and morphological characteristics to...
Preprint
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The Pantanal wetland harbours the second largest population of jaguars in the world. Alongside climate and land-use changes, the recent mega-fires in the Pantanal may pose a new threat to the jaguars’ long-term survival. To put these growing threats into perspective, we addressed the reach and intensity of fires that have affected jaguar conservati...
Article
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The persistence of species in fragmented landscapes relies on landscape connectivity and individuals’ ability in dispersing among habitat patches. Accordingly, matrix structure can affect the orientation of dispersing individuals across the landscape. In this study, we measured the impact of matrix structure on the dispersal performance of the whit...
Article
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ContextAn understanding of species-habitat relationships is required to assess the impacts of habitat fragmentation and degradation. To date, habitat modeling in fragmented landscapes has relied on landscape composition and configuration metrics and the importance of habitat quality in determining species distributions has not been sufficiently exp...
Article
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Knowing the influence of intrinsic and environmental traits on animals' movement is a central interest of ecology and can aid to enhance management decisions. The giant anteater (Myrmecophaga tridactyla) is a vulnerable mammal that presents low capacity for physiological thermoregulation and uses forests as thermal shelters. Here, we aim to provide...
Article
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Small cats can have a direct influence on the organization of small Neotropical vertebrate communities. However, the magnitude of influence and role(s) played by small felids, including Leopardus guttulus, in regulating prey populations is not well understood. This study aims to determine if there is a key-taxon in the dietary composition of the so...
Article
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The rate of deforestation and the number of large wildfires are increasing in the Amazon. Illegal loggers, miners, ranchers, and farmers all have contributed to this increase. Their activities have dramatic consequences for biodiversity, ecological services, and people. In this study, we estimated the number of jaguars affected by deforestation. We...
Article
Territoriality is widespread in the animal kingdom, but its evolutionary origins are less understood than the movement patterns that generate it. Previous studies attempted to understand the evolution of these movement patterns by assuming that certain movement patterns comprised competing strategies and using evolutionary game theory to find which...
Article
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Due to the rapid growth of urban environments, interactions between animals and humans in cities are increasingly common. Large mammals, such as capybaras (Hydrochoerus hydrochaeris), provide benefits to people and biodiversity of urban areas, but can also result in conflicts, such as animal–vehicle collisions or disease transmission. As a conseque...
Article
Mammals can show conspicuous behavioral responses to thermal variation, including changes in movement patterns. We used an integrative approach to understand how environmental temperature can drive the movement behavior of a mammal with low capacity for physiological thermoregulation, the giant anteater (Myrmecophaga tridactyla). We tracked 52 gian...
Article
Large felids (>30 kg) have exclusively carnivorous diets and depend upon medium and large terrestrial prey to fuel high metabolic demands (Sunquist and Sunquist 2002, Carbone et al. 2007). Although some of them commonly use trees for resting, hunting, avoiding predators or competitors (e.g., leopards Panthera pardus ‐ Le Roux & Skinner, 1989 and pu...
Article
Resource selection provides essential information about species strategies to meet their biological requirements, and is key for conservation strategies development. Although intraspecific variation in behavior is widespread, most resource selection studies have ignored intrapopulation variability. We aim to understand if individuals have different...
Article
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Biodiversity loss is currently one of the most important societal concerns worldwide, and it is caused mainly by habitat loss and fragmentation, biological invasion, and climate change (Vitousek et al. 1996, Newbold et al. 2015, Bellard et al. 2016). Introduced species can have positive effects on human well‐being, especially when used for liveliho...
Article
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Although critical in understanding human societies relying on natural game stocks, little attention has been paid to how socioeconomic traits can influence hunter behaviour. Our research focuses on whether village size, household size and age, and hunter age and monetary income affect hunting efficiency (catch-per-unit-effort) and catchment areas o...
Article
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Animal mating systems provide key insights into the relationship between evolutionary processes and ecological factors such as the spatio-temporal fuctuation of resource abundance. Characteristics of mating systems can be inferred from the spatial distribution of conspecifcs and the arrangement of reproductive pairs. Here we used home-range size an...
Article
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Accurately quantifying species’ area requirements is a prerequisite for effective area‐based conservation. This typically involves collecting tracking data on species of interest and then conducting home‐range analyses. Problematically, autocorrelation in tracking data can result in space needs being severely underestimated. Based on previous work,...
Article
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Activity range ‐ the amount of time spent active per day ‐ is a fundamental aspect contributing to the optimization process by which animals achieve energetic balance. Based on their size and the nature of their diet, theoretical expectations are that larger carnivores need more time active to fulfil their energetic needs than do smaller ones and a...
Article
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Studying how different variables influence the size and shape of animals’ home ranges helps our understanding of the ecology of individuals and populations. This study aims to assess the effects of sex and body mass on home range size and the sexual differences in the use of terrestrial habitats of a population of aquatic turtles Phrynops geoffroan...
Data
Márcia Marrie Pinheiro Müller, Zaida Ortega, Pâmela Castro Antunes, Larissa Lopes Seino, Matheus Justino Hammarstron, Ana Carolina França Balbino-Silva, Luiz Gustavo Rodrigues Oliveira-Santos Data type: ZIP file Explanation note: Code to rescale relocations, estimations of one-dimensional kernel, cut isopleths of probability and plots of home rang...
Article
The giant armadillo (Priodontes maximus) is the largest living armadillo. This naturally rare and poorly known species is endemic to South America and classified as "Vulnerable" by the IUCN. Here we explored aspects of the spatial ecology of P. maximus in Midwestern Brazil to gain insights on its ecology and biology to support conservation efforts....
Article
Studying how different variables influence the size and shape of animals’ home ranges helps our understanding of the ecology of individuals and populations. This study aims to assess the effects of sex and body mass on home range size and the sexual differences in the use of terrestrial habitats of a population of aquatic turtles Phrynops geoffroan...
Article
Full-text available
Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...
Conference Paper
Full-text available
Animals base resource use on many interacting variables. Here we propose an approach to facilitate assessing the role of many candidate variables -and their potential interactions- in resource selection within the same probabilistic process. We propose Mixed structural resource selection function (mixed-SRSF), that is, using mixed structural equati...
Article
Full-text available
Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...
Article
Our aim was to disentangle the effects of different heat sources and the non-thermal properties of the substrate in the microhabitat choices of two lizard species living in savanna habitats of central-western Brazil: the teiid Ameivula aff. ocellifera (N = 43) and the tropidurid Tropidurus oreadicus (N = 23). To this end, a mixed structural resourc...
Article
Home range estimation is routine practice in ecological research. While advances in animal tracking technology have increased our capacity to collect data to support home range analysis, these same advances have also resulted in increasingly autocorrelated data. Consequently the question of which home range estimator to use on modern, highly autoco...
Conference Paper
Full-text available
JAIREMARINHO@HOTMAIL.COM Vários gêneros de flagelados são parasitas sanguíneos de vertebrados, sendo transmitidos por vetores hematófagos. Dentro desse grupo temos os representantes do gênero Trypanosoma com mais de 500 espécies descritas. Acredita-se que os representantes da família Trypanosomatidae surgiram a partir da evolução de formas aquátic...
Article
Full-text available
The occurrence of Trypanosoma spp. in wild carnivore populations has been intensively investigated during the last decades. However, the impact of these parasites on the health of free-living infected animals has been largely neglected. The Pantanal biome is the world’s largest seasonal wetland, harboring a great diversity of species and habitats....
Data
Path analysis on immune investment against Trypanosoma evansi of ocelots (Leopardus pardalis). Results of path analysis on immune investment against Trypanosoma evansi in ocelots (Leopardus pardalis) infected with T. evansi and coinfected with T. evansi/Trypanosoma cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October...
Data
Path analysis on anemia indicators of coatis (Nasua nasua). Results of path analysis on anemia indicators of coatis (Nasua nasua) infected with Trypanosoma evansi and coinfected with T. evansi/Trypanosoma cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016. (TIF)
Data
Path analysis on infection responses of crab-eating foxes (Cerdocyon thous). Results of path analysis on infection responses of crab-eating foxes (Cerdocyon thous) infected with Trypanosoma cruzi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016. (TIF)
Data
Path analysis on immune investment against Trypanosoma cruzi of crab-eating foxes (Cerdocyon thous). Results of path analysis on immune investment against T. cruzi in crab-eating foxes (Cerdocyon thous) infected with Trypanosoma cruzi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 a...
Data
Path analysis on infection responses of coatis (Nasua nasua). Results of path analysis on infection responses of coatis (Nasua nasua) infected with Trypanosoma cruzi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016. (TIF)
Data
Path analysis on anemia indicators in ocelots (Leopardus pardalis). Results of path analysis on anemia indicators in ocelots (Leopardus pardalis) infected with Trypanosoma evansi and coinfected with T. evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016. (TIF)
Data
Path analysis on immune investment against Trypanosoma cruzi of ocelots (Leopardus pardalis). Results of path analysis on immune investment against Trypanosoma cruzi in ocelots (Leopardus pardalis) infected with T. evansi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 20...
Data
Path analysis on immune investment of coatis (Nasua nasua). Results of path analysis on immune investment of coatis (Nasua nasua) infected with Trypanosoma cruzi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015 and October 2016. (TIF)
Data
Path analysis on immune investment against Trypanosoma evansi of crab-eating foxes (Cerdocyon thous). Results of path analysis of immune investment against T. evansi in crab-eating foxes (Cerdocyon thous) infected with Trypanosoma cruzi and coinfected with Trypanosoma evansi/T. cruzi in the sub-region of Nhecolândia, Pantanal, between November 2015...
Data
Collection Data Set. Data of coatis (Nasua nasua), crab-eating-foxes (Cerdocyon thous) and ocelots (Leopardus pardalis) infected for Trypanosoma cruzi and Trypanosoma evansi in the Pantanal. Samples were collected from November 2015 up to October 2016. (XLSX)
Article
In this study, we aimed to evaluate how air temperature is related to variation in activity patterns and habitat selection by two species of tropical armadillos, which are imperfect homeotherms. Although their behaviour is little studied, armadillos provide valuable models for understanding how physiology affects mammalian behaviour in response to...
Article
Full-text available
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint wer...
Article
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Habitat fragmentation reduces biodiversity and affects ecological processes that are fundamental for maintaining ecosystem services. We investigated how landscape structure—percent forest cover, patch density, percent cover by edge, perimeter-area ratio, and spatial heterogeneity—affects the diversity of mammalian carnivores at multiple extents wit...
Article
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Our understanding of mammal ecology has always been hindered by the difficulties of observing species in closed tropical forests. Camera trapping has become a major advance for monitoring terrestrial mammals in biodiversity rich ecosystems. Here we compiled one of the largest datasets of inventories of terrestrial mammal communities for the Neotrop...
Article
Full-text available
Resource partitioning is considered one of the main processes driving diversification in ecological communities because it allows coexistence among closely related and ecologically equivalent species. We combined three complementary approaches, i.e. the evaluation of foraging behaviour, diet composition and nutritional condition (RNA:DNA ratio), to...
Article
Mammals play innumerous ecological functions in terrestrial ecosystems and are in decline in the Atlantic Forest. Using a biogeography approach with tools to analyze metacommunities, this study aimed to understand how mammal diversity would vary spatiotemporally across the Atlantic Forest. Secondary data about mammal communities was obtained using...
Article
Animals make directional movements toward resources to satisfy nutritional, reproductive, and protection needs. We evaluated resource selection by the spiny rat (Thrichomys fosteri) in a heterogeneous habitat, disentangling the relative importance of habitat structure, escape cover, food availability, and intraspecific competition. The last 2 varia...
Article
Aim: To examine the dynamics among the processes of speciation, extinction and dispersal in marine environments using phylogenies to reveal the evolutionary mechanisms that promote latitudinal differences in biodiversity. Using phylogenetic comparative methods we assess whether tropical reef fish lineages show higher diversification rates and wheth...
Article
Full-text available
Defaunation is a key ecological issue that has only recently been given sufficient attention. As predicted, evidence so far indicates loss of larger species followed by medium-sized species, leading to cascading effects that propagate throughout entire communities and ecosystems. The Atlantic Forest is among the most important global biodiversity h...
Article
Taxonomic nestedness, the degree to which the taxonomic composition of species-poor assemblages represents a subset of richer sites, commonly occurs in habitat fragments and islands differing in size and isolation from a source pool. However, species are not ecologically equivalent and the extent to which nestedness is observed also in terms of fun...
Article
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Memory is among the most important and neglected forces that shapes animal movement patterns. Research on the movement-memory interface is crucial to understand how animals use spatial learning to navigate across space because memory-biased navigation is directly linked to animals' space use and home range behaviour; however, because memory cannot...
Article
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Starting around 50,000 years ago, most large terrestrial animals went extinct in most continents. These extinctions have been attributed either to climatic changes, impacts of human dispersal across the world or a synergy among both. Most studies regarding these extinctions, however, have focused on particular continents or used low-resolution anal...
Article
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Daily activity patterns reflect interactions between circadian mechanisms and environmental stimuli. Among these stimuli, temperature can be an important factor affecting activity budgets. To sample the agouti ( Dasyprocta azarae ), a systematic camera-trap grid was established with 50 independent sampling sites. A circular kernel function was used...
Article
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The occurrence of coat colour polymorphisms in populations may promote the ecological success of species by permitting a wider spectrum of use of different subsets of available resources. We conducted an analysis of temporal segregation by comparing night brightness with nocturnal activity of spotted and melanistic oncillas (Leopardus tigrinus). Me...
Article
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We investigate the potential flaws of estimating animal home range using indexes based on distance between captures as proposed by Püttker et al. (2012, Journal of Mammalogy 93:115—123). Through simulated capture distributions we demonstrated that distance indexes are inherently correlated with home-range estimates derived from the same data set. W...
Article
Resource availability can influence animal movement causing changes in home-range size and arrangement between seasons. We investigated the influence of acuri palm (Attalea phalerata) on the occupancy of agouti Dasyprocta azare during both the dry and rainy seasons, as well as the abandonment probabilities in the transition between seasons in the B...
Article
Full-text available
Giant otters (Pteronura brasiliensis) live in groups that seem to abandon their territories during the flooding season. We studied the spatial ecology of giant otter groups during dry and wet seasons in the Vermelho and Miranda rivers in the Brazilian Pantanal. We monitored visually or by radiotelemetry 10 giant otter groups monthly from June 2009...