Pablo Ariel MartinezUniversidade Federal de Sergipe · Departamento de Biologia
Pablo Ariel Martinez
Doctor in Ecology
Professor at the Universidade Federal de Sergipe
About
96
Publications
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Introduction
Additional affiliations
November 2014 - November 2015
November 2014 - present
Publications
Publications (96)
1. Studying niche evolution becomes central to understanding the processes driving species diversification along latitudinal gradients. Octodontoidea rodents serve as a model group for understanding how the colonisation of extratropi-cal regions has shaped the climatic niche evolution of species. 2. We analyse the time and mode of climatic niche ev...
Aim: We studied the niche evolution and diversification modes in transisthmian Alpheus shrimps by examining the interplay between environmental niche divergence and conservatism in allopatric sister species. In a broader perspective, the current study analysed the evolution of climatic niche and the role of the environment in species diversificatio...
Freshwater ecosystems are among the most important in the world and provide essential functions and services to humans. In this study, we examine the roles of environmental and historical factors in explaining contemporary patterns of species richness. We investigated spatial patterns of species richness of freshwater crabs by compiling geographic...
Background Climate change is expected to have profound effects on the distribution of venomous snake species, including reductions in biodiversity and changes in patterns of envenomation of humans and domestic animals. We estimated the effect of future climate change on the distribution of venomous snake species and potential knock-on effects on bi...
Background
Incomplete species inventories for Antarctica represent a key challenge for comprehensive ecological research and conservation in the region. Additionally, data required to understand population dynamics, rates of evolution, spatial ranges, functional traits, physiological tolerances and species interactions, all of which are fundamental...
Temperature is a primary driver to define the ecophysiological activity and performance of ectotherms. Thus, thermal tolerance limits have a profound effect in determining geographic ranges. In regions with extreme cold temperatures, lower thermal limits of species are a key physiological trait for survival. Moreover, thermal niche breadth also pla...
Grasses (Family Poaceae) are among the most successful invasive plants in the world. Here we evaluate phylogenetic and biogeographic patterns of emergence of naturalized and invasive species among grasses globally. In our data, circa 19% of the grasses are currently catalogued as invasive and almost 38% are listed as naturalized; these are among th...
Great environmental changes may affect the survival capability of a variety of organisms. Testudinidae is the most diverse family of terrestrial chelonians within the whole order (Testudines). Interestingly, however, the number of extinct species overcome the extant ones. In order to understand better how the diversification process of this family...
Species distribution models (SDMs), the most prominent tool in modern biogeography, rely on the assumptions that (i) species distribution is in equilibrium with the environment and (ii) that climatic niche has been conserved throughout recent geological time. These issues affect the spatial and temporal transferability of SDMs, limiting their relia...
Significance
Energetic constraints of flight and thermoregulation have long been thought to explain why most bat species are small and live predominantly in warm latitudes. We use physical models to investigate how body size, wing shape, and climate modulate these energetic constraints. Our model predicts that thermoregulatory and flight costs, res...
The foreseen global changes of the next decades will modify human and livestock interactions with venomous animals throughout the planet. Advancing the knowledge about the distribution of venomous animal species and their possible impact in humans and livestock will be essential not only to prevent and treat envenomings but also to conserve the pla...
Understanding the success factors underlying each step in the process of biological invasion provides a robust foundation upon which to develop appropriate biosecurity measures. Insights into the processes occurring can be gained through clarifying the circumstances applying to non-native species that have arrived, established and, in some cases, s...
Estudos anteriores sobre a doença de Chagas em grandes escalas espaciais não exploraram como a interação com humanos pode afetar as projeções para a distribuição geográfica da aptidão ambiental das espécies de vetores. Aqui, comparamos modelos de distribuição de espécies usando apenas variáveis climáticas como preditores (SDMClim) com modelos que i...
The order Characiformes is one of the most diverse and widely distributed groups of fishes in cis-Andean basins. That diversity is reflected in the São Francisco River (Brazil), where approximately 1/3 of all described species belong to that order, with many being endemic and/or considered endangered. The great morphological diversity observed in t...
Aim
The emergence of venom is an evolutionary innovation that favoured the diversification and survival of snakes. The composition of snake venoms is known in detail from venom gland proteomic data. However, there is still a gap of knowledge about the forces that lead to the expression of different toxins in different proportions in the venom cockt...
Aim
To assess whether interspecific variation in lethal intraspecific aggressiveness in mammals exhibits a geographical gradient and, if so, to identify which ecological, social and evolutionary processes could explain such patterns.
Location
Global.
Taxon
Mammalia.
Methods
We mapped intraspecific lethal aggressivity for 952 terrestrial mammal s...
Amazonia harbours a vast biotic and ecological diversity, enabling investigation of the effects of microevolutionary processes and environmental variation on species diversification. Integrative approaches combining phenotypic and genetic variation can improve our knowledge on diversification processes in megadiverse regions. Here, we investigate t...
Continental mountain areas cover <15% of global land surface, yet these regions concentrate >80% of global terrestrial diversity. One prominent hypothesis to explain this pattern proposes that high mountain diversities could be explained by higher diversification rates in regions of high topographic complexity (HTC). While high speciation in mounta...
An integrative taxonomic approach was adopted to confirm that the shrimp Cinetorhynchus erythrostictus was introduced into the Western Atlantic Ocean and it is for sale in the marine aquarium trade in Brazil, misidentified as C. rigens, a representative of the Atlantic fauna. The MaxEnt modeling technique was used to infer ecological niche models f...
Genome size (GS) is known to vary widely among fishes. However, evolutionary drivers that shape this variation are largely unknown in Pomacentridae. GS information is available for several Pomacentridae species, which have adapted over evolutionary time mainly in reef environments. In the present study, we used comparative phylogenetic methods to e...
Objective
To identify areas that present a higher risk of exposure to accidents with scorpions in Brazil.
Methods
We used techniques of spatial prioritisation to determine the most vulnerable localities to envenomation by four scorpion species. Our prioritisation integrated ecological niche models with health investment, antivenin availability, ac...
2021): Studying natural history far from the museum: the impact of 3D models on teaching, learning, and motivation, Journal of Biological Education To link to this article: https://doi. ABSTRACT Natural history museums (NHM) are important for students' learning and motivation. However, the lack or scarcity of NHMs in countries with emerging markets...
The origin of morphological diversity is a critical question in evolutionary biology. Interactions between the environment and developmental processes have determining roles in morphological diversity, creating patterns through space and over time. Also, the shape of organisms tends to vary with increasing size as a result of those developmental pr...
Global diversity gradients have been extensively investigated for several biological groups. However, little is known whether the diversity drivers of clades that underwent major environmental transition (e.g., from land to sea) are equivalent across these different environmental settings. Here, we ask if the pattern of diversity of marine elapid s...
The dynamics of species diversification have attracted significant scientific attention in recent decades. Many lineages tend to maintain their niche characteristics over evolutionary time, a phenomenon known as phylogenetic niche conservatism (NC), which can slow the processes of ecological speciation by diversification selection. NC can, however,...
Evolutionary rate explanations for latitudinal diversity gradients predict faster speciation and diversification rates in richer, older and more stable tropical regions (climatic stability hypothesis). Numerous modern lineages have emerged in high latitudes, however, suggesting that climatic oscillations can drive population divergence, at least am...
Aim
Body size frequency distributions are often skewed to the right, with a greater frequency of small‐sized species. Right skewness can appear when speciation is biased towards small species and extinction towards large ones. In contrast, limits imposed by environmental constraints will select taxa to co‐occur in assemblages and can modify size di...
Aim
The conservation of biodiversity is hampered by data deficiencies, with many new species and subspecies awaiting description or reclassification. Population genomics and ecological niche modelling offer complementary new tools for uncovering functional units of phylogenetic diversity. We hypothesize that phylogenetically delineated lineages of...
The acoustic adaptation hypothesis (AAH) predicts that acoustic signals are selected
to propagate more efficiently in the habitat where they are normally transmitted.
Several studies corroborated the AAH for primates and birds, but evidence for frogs
is contentious: While most studies failed to support the AAH, recent studies have
shown that wi...
Species distribution models (SDMs) are increasingly used to assess how ecological factors shape species distributions and diversification. Chelid turtles represent the richest family of chelonians in South America. Given the distributional disjunction and distinct habitats of four Acanthochelys species, we explored SDMs and niche overlap metrics be...
p> Resumo : A diferença de tamanho corporal entre machos e fêmeas é conhecida como dimorfismo sexual de tamanho (DST). O surgimento do DST é atribuído na maioria das vezes a processos de seleção sexual, entretanto a seleção natural também pode afetar o DST. Tem se observado em diversos grupos que a intensidade do DST está associada com o tamanho co...
Previous work on Chagas Disease disease at large spatial scales has not explored how interaction with humans can affect projections for geographical distribution of environmental suitability of vector species. Here, we compare niche-based species distribution models with climatic variables as predictors (SDM clim) and with climatic variables + huma...
The energetic demand of consumers increases with body size and temperature. This implies that energetic constraints may limit the trophic position of larger consumers, which is expected to be lower in tropical than in temperate regions to compensate for energy limitation. Using a global dataset of 3,635 marine and freshwater ray‐finned fish species...
Aim
Many hypotheses exist to explain the astonishing variation in geographical range size across species, but these have rarely been tested under a unifying framework that simultaneously considers direct and indirect effects of ecological niche processes and evolutionary dynamics. Here, we jointly evaluate ecological and evolutionary hypotheses tha...
Geographical gradients of body size express climate-driven
constraints on animals, but whether they exist and what causes them
in ectotherms remains contentious. For amphibians, the water conservation
hypothesis posits that larger bodies reduce evaporative water
loss (EWL) along dehydrating gradients. To address this hypothesis
mechanistically, we...
An integrative approach was used, combining morphological and molecular analyses, to provide the first report of Lysma-ta lipkei and L. vittata in Sergipe State, Brazil, and confirm that both species are invasive of the Atlantic Ocean. Lysmata shrimps were sampled in the estuary region of the Vaza-Barris river, Sergipe State, northeastern Brazil, a...
Environmental catastrophes may precipitate local species extinctions, hence altering community composition (i.e., β-diversity) at the regional scale. Assessments of the impacts of such disturbance may be hindered by the availability of sufficiently high-quality before/after data. However, simulations can provide key insights into the nature of the...
Understanding the interspecific variation in body size across macroclimatic gradients has been of paramount importance to naturalists and biogeographers. Bergmann's rule, which describes a trend of increasing body size polewards, is arguably the best-known ecogeographical rule in terrestrial environments but remains largely unexplored in the marine...
Chagas disease represents one of the major health issue in Latin America. Epidemiological control is focused on disease vectors, so studies on the ecology of triatomine vectors constitute a central strategy. Recently, research at large spatial scale has been produced, and authors commonly rely on the assumption that geographical regions presenting...
1. Body size influences the way that organisms both perform their locomotor activities and perceive their environment. Allometry of insect legs with respect to body size is affected by many factors such as ontogenetic constraints and natural selection. Negative allometry, positive allometry, or isometry could result from different mechanisms influe...
The temporal pattern of co-occurrence of human beings and venomous species (scorpions, spiders, snakes) is changing. Thus, the temporal pattern of areas with risk of accidents with such species tends to become dynamic in time. We analyze the areas of occurrence of species of Tityus in Argentina and assess the impact of global climate change on thei...
Historically, studies aimed at prospecting and analyzing paleontological and neontological data to investigate species distribution have developed separately. Research at the interface between paleontology and biogeography has shown a unidirectional bias, mostly focusing on how paleontological information can aid biogeography to understand species...
Table A: Results for AUC (Area Under the ROC Curve), TSS (True Skill Statistics), and suitability. Values were extracted from a raster layer, at the coordinates for fossil record of Lagostomus maximus (34°16’12.23”S, 55°59’35.82”W and 34°17’30.45”S, 55°55’57.16”W; 13,898–13,941 years BP; Ubila & Rinderknech, 2016) and Myocastor coypus (12°23’36.3”...
Random forest results.
Complete results of our simulations with Random Forest algorithm, for suitability distribution of Caiman crocodilus, Caiman latirostris, Caiman yacare and Melanosuchus niger on the Neotropics. The blue triangle indicates the points where the fossil were recorded.
(TIFF)
Climate comparison results.
Maxent outputs for Clamping, MESS and MoD, comparing current and 11 kyr BP climates. Results show that do not occur non-analogue climates for such time period, considering the environmental data employed (mean temperature of the warmest and the coldest quarters, and total precipitation of the driest and wettest quarters)...
Climate comparison results.
Maxent outputs for Clamping, MESS and MoD, comparing current and 20 kyr BP climates. Results show that do not occur non-analogue climates for such time period, considering the environmental data employed (mean temperature of the warmest and the coldest quarters, and total precipitation of the driest and wettest quarters)...
GLM results.
Complete results of our simulations with GLM algorithm, for suitability distribution of Caiman crocodilus, Caiman latirostris, Caiman yacare and Melanosuchus niger on the Neotropics. The blue triangle indicates the points where the fossil were recorded.
(TIFF)
Climate comparison results.
Maxent outputs for Clamping, MESS and MoD, comparing current and 21 kyr BP climates. Results show that do not occur non-analogue climates for such time period, considering the environmental data employed (mean temperature of the warmest and the coldest quarters, and total precipitation of the driest and wettest quarters)...
Maxent results.
Complete results of our simulations with Maxent algorithm, for suitability distribution of Caiman crocodilus, Caiman latirostris, Caiman yacare and Melanosuchus niger on the Neotropics. The blue triangle indicates the points where the fossil were recorded.
(TIFF)
Climate comparison results.
Maxent outputs for Clamping, MESS and MoD, comparing current and 13 kyr BP climates. Results show that do not occur non-analogue climates for such time period, considering the environmental data employed (mean temperature of the warmest and the coldest quarters, and total precipitation of the driest and wettest quarters)...
Aim
Understanding the mechanisms that drive phenotypic divergence along climatic gradients is a long‐standing goal of biogeography. To fulfil this objective, we tested if neutral and/or adaptive effects drive phenotypic diversification. We quantified the effects of neutral evolution and natural selection on morphological variability of a well‐suite...
Aim
The aim was to examine the links between past biome stability, vegetation dynamics and biodiversity patterns.
Location
South America.
Time period
Last 30,000 years.
Major taxa studied
Plants.
Methods
We classified South America into major biomes according to their dominant plant functional groups (grasses, trees and shrubs) and ran a random...
Spatial patterns of genetic variation can help understand how environmental factors either permit or restrict gene flow and create opportunities for regional adaptations. Organisms from harsh environments such as the Brazilian semiarid Caatinga biome may reveal how severe climate conditions may affect patterns of genetic variation. Herein we combin...
The domestication syndrome already recognized by Darwin
shows that domesticated species acquire a number of novel
morphological, physiological and behavioral characteristics not
present in their wild ancestors. Because body size and sexual size
dimorphism (SSD) are essential characteristics of species that
affect most aspects of their life historie...
Quaternary climate changes have contributed to shape the biogeographic distribution of extant species. The combination of climatic niche conservatism and glacial-interglacial cycles forced many species to retract their range limits for surviving under the advance of Pleistocene ice-sheets. Refugia offered geographical opportunities for species to r...
Aim
Closely related species are expected to be similar in their ecological attributes. However, clades colonizing new environments and diversifying due to ecological processes often show morphological and ecological divergence. Canids arrived in South America after the formation of the Isthmus of Panama and diversified to occupy a variety of habita...
BACKGROUND: The knowledge of the factors that affect the geographic distribution of species permits us to infer where they can be found. Human beings, through the expansion of their own distribution area and their contribution to climate alteration have modified the geographic distribution of other biological species. As a consequence, the temporal...
BACKGROUND: The knowledge of the factors that affect the geographic distribution of species permits us to infer where they can be found. Human beings, through the expansion of their own distribution area and their contribution to climate alteration have modified the geographic distribution of other biological species. As a consequence, the temporal...
Chromosomal rearrangements have a relevant role in organismic evolution. However, little is known about the mechanisms that lead different phylogenetic clades to have different chromosomal rearrangement rates. Here, we investigate the causes behind the wide karyotypic diversity exhibited by mammals. In particular, we analyzed the role of metabolic,...
We used a beta diversity (β-div) approach to analyze the possible consequences of the 'Bento Rodrigues dam disaster' over the Doce Basin and six neighbouring basins, by quantifying the changes in the total β-div and its components (turnover and nestedness). Using five scenarios of extinction, ranging from no extinction to total extirpation through...
Variations of diversity among local assemblages, defined as beta diversity (β-div), have been widely used to investigate the processes responsible for the formation and maintenance of biodiversity. The β-div presents two components: replacement of species between communities (turnover) and 'nesting', with some communities being subsets of richer on...
The size variation between males and females of a species is a phenomenon known as sexual size dimorphism (SSD). The observed patterns of variation in SSD among species has led to the formulation of Rensch's rule, which establishes that, in species showing a male size bias, SSD increases with an increase in the body size of the species. However, fo...
Carangidae is a morphologically diverse family of marine fish, characterized by stable karyotypes, predominantly with 2n = 48, composed of acrocentric chromosomes (A). This stability is shared with other families of the order Perciformes, which resulted in the hypothesis that 48A is a plesiomorphic karyotype of the group. We tested this hypothesis...
Intraspecific morphological variation can be generated by a set of historical and ecological processes, and can be induced by anthropogenic actions. One such activity that has large-scale environmental impacts in freshwater environments is interbasin water transfer. Brazil's Mid-Northeastern Caatinga freshwater ecoregion is going through an interba...
Tropical reef fishes show contrasting patterns of karyotypic diversity. Some families have a high chromosomal conservatism while others show wide variation in karyotypic macrostructure. However, the influence of life-history traits on karyotypic diversity is largely unknown. Using phylogenetic comparative methods, we assessed the effects of larval...
The geographic range of a species is arguably the basic unit in biogeography and macroecology (Brown et al., 1996). In particular, there has been a long-standing interest in understanding the mechanisms that shape the immense interspecific variation in geographic range size, a question often framed around Rapoport's rule (Whitton et al. 2012). As a...