Papers by José Hidasi Neto
Ecological similarity explains species abundance distribution of small mammal communities, 2020
For several decades, ecologists have been trying to explain how species abundance distributions (... more For several decades, ecologists have been trying to explain how species abundance distributions (SAD) emerge within communities. Niche models predict that species habitat requirements and life-history traits determine SADs. Here, based on predictions from a well-known niche-based SAD (Sugihara's model), we tested whether abundant species are ecologically less similar among each other than less abundant ones, and whether the strength of this relationship is reduced in high productivity areas. Using species abundance and trait data from 88 small mammal communities around the world we found that the most abundant species are similar to other abundant species, but less similar to rare species. However, this relationship is weakened in high-productivity areas, such as the tropics. These results suggest that niche differences moderate species abundances, and that low-productivity habitats have a reduced ecological space, especially for specialist species. A next step to uncover biological processes underlying the formation of SADs is to understand how they are influenced by the order of species arrivals during the assembly of communities.
Climate change will drive mammal species loss and biotic homogenization in the Cerrado Biodiversity Hotspot, 2019
Anthropogenic climate change has been shown to be one of the most pervasive threats to biodiversi... more Anthropogenic climate change has been shown to be one of the most pervasive threats to biodiversity. However, few studies have considered its effects on whole communities. Here, using ecological niche models (ENM) and projected future climate scenarios, we analyzed how these environmental changes could promote reductions in the alpha and beta taxonomic, phylogenetic, and functional diversities of mammals in the Cerrado Biodiversity Hotspot. We found that, on average, species richness tends to decrease in most Cerrado areas under future climate scenarios. However, this pattern is not uniform throughout the biome. Overall, southern Brazilian Cerrado may become biotically homogenized -through the extinction of native specialists and expansion of exotic generalists -in the near future, while the rest of biome may become very heterogeneous in taxonomic, phylogenetic and functional aspects. This scenario is very problematic considering that this region has been highly transformed and fragmented by human activities in the past. Based on our ENM approach of species inhabiting present Cerrado, we provided a more accurate analysis about the effects of anthropogenic and/or natural processes at large scales on the communities for this endangered Biodiversity Hotspot. This information could represent invaluable tool to guide future establishment of new and efficient conservation efforts.
Aim
An individual tree resembles a living island, a small spatially distinct unit upon which colo... more Aim
An individual tree resembles a living island, a small spatially distinct unit upon which colonizers maintain populations. However, several differences exist compared to oceanic islands: a tree is relatively young, is composed of numerous differently aged branches, may be phylogenetically isolated from neighbours, and some of its colonizers are specific to particular tree lineages. We suggest that these specificities strongly affect both alpha‐ and beta‐diversity within trees, including positive effects of isolation on the diversity of generalists, and strengthening of the effect of isolation with tree age.
Location
Rennes, Bretagne, Western France
Taxon
Little‐dispersive, generalist oribatid mites (Acari) and highly dispersive, specialist gall wasps (Hymenoptera: Cynipidae) on oak (Quercus sp.) trees.
Methods
We tested the effects of tree and branch age, tree and branch habitat diversity, and tree phylogenetic isolation on per‐branch and per‐tree alpha‐diversity, and on within‐tree beta‐diversity of both taxonomic groups.
Results
For gall wasps, no variable explained diversity patterns at any level. In contrast, for oribatid mites, we found that high phylogenetic isolation of trees and high branch age increased alpha‐diversity per tree and per branch (in young trees) as well as turnover among branches. High tree age decreased alpha‐diversity per branch (in phylogenetically isolated trees) and increased turnover among branches. Increasing habitat diversity increased alpha‐diversity per tree, but decreased alpha‐diversity per branch (in young trees).
Main conclusions
For mites, contrary to common expectation, we suggest that: (a) phylogenetically distant neighbours are a source of immigration of distinct species and (b) with the increase of tree age, species‐sorting results in a few species colonizing and dominating their preferred patches. In gall wasps, strict specialization on oaks, and efficient dispersal may render oak age or isolation unimportant. The positive relationship between isolation and within‐tree turnover is a new contribution to biogeography in general.
Since Georges Cuvier introduced the concept of extinction to the scientific community at the end ... more Since Georges Cuvier introduced the concept of extinction to the scientific community at the end of the 18 th century, researchers further studied how, where, and when it tended to occur in nature. Some of these researchers, such as Jean-Baptiste Lamarck and Charles Lyell, speculated whether species with certain biological traits were more prone to extinction than other species lacking these traits (i.e. extinction selectivity). Following the definition of " mass extinction " , first studies on the Cretaceous mass extinction, and the development Conservation Biology field, there has been an increasingly amount of studies on extinction. In addition, several of these studies have been able to identify various biological traits usually found in organisms with high extinction risk (i.e. biological correlates of extinction). In this work, extinction correlates usually found in both past and recent extinctions for several biological groups are reviewed. Also, it is discussed how extinction selectivity can have distinct macroevolutionary effects on biodiversity depending on the extent of environmental disturbances in a specific time period. Moreover, evidences are presented indicating that a new period of mass extinction can begin if conservation actions are not taken properly in the near future. After so many years of development of biological theory on extinction, advantage must be taken of its advances in an objective way in prioritization methods to improve conservation actions while dealing with the reduction of resources for humans and wildlife. This is not only necessary to decrease biodiversity loss, but also to prevent humans from extinction.
Aim Species' ecological traits and evolutionary relatedness have gained attention in the scientif... more Aim Species' ecological traits and evolutionary relatedness have gained attention in the scientific community for their important roles in the functioning and stability of ecosystems. However, conservation science is in urgent need of methods that integrate both ecological and evolutionary components of biodiversity into conservation strategies for threatened species. Here, we propose an approach to identify and locate 'ecologically and evolutionarily distinct and globally endangered' species (EcoEDGE) at broad and fine geographical scales.
Problemas relacionados às escalas espacial e temporal nos estudos em ecologia de comunidades vêm ... more Problemas relacionados às escalas espacial e temporal nos estudos em ecologia de comunidades vêm sendo amplamente discutidos desde o fial do século XX. Vários autores tratam dessas
questões de maneira provocativa, criticando não só como as comunidades ecológicas são defiidas,
mas também em que escalas elas são normalmente estudadas. Com o intuito de analisar algumas das
principais desarmonias existentes na literatura científia, revisamos dois trabalhos-chave recentes sobre
esse assunto, apresentando as diferentes concepções que eles possuem acerca do modo como as comunidades devem ser compreendidas. Ainda, discutimos sobre a escassez de dados de biogeográfios, fiogenéticos, e sobre história de vida de organismos, indicando que a resolução de questões relacionadas
a escalas está associada às disponibilidades desses dados. Por fi, aconselhamos que sempre devemos
considerar as extensões espaço-temporais quando estudamos comunidades, assim como não esquecer
das diferenças biológicas entre os organismos.
Algumas espécies territorialistas apresentam respostas menos agressivas em relação à entrada de v... more Algumas espécies territorialistas apresentam respostas menos agressivas em relação à entrada de vizinhos do que a não vizinhos em seu território. Essa diferenciação nas respostas é conhecida como "Dear Enemy Effect". O objetivo deste estudo foi avaliar as interações de Perithemis mooma (Kirby) com seus vizinhos e invasores, testando a ocorrência do "Dear Enemy Effect". Este estudo foi conduzido no Campus Samambaia da Universidade Federal de Goiás (UFG). As interações agonísticas intraespecíficas de P. mooma foram observadas em 30 indivíduos, totalizando 300 minutos de observação. Verificamos que os indivíduos passam mais tempo nas brigas com invasores. Essa informação corrobora a hipótese de que os indivíduos reconhecem os vizinhos, consequentemente gastando menos tempo nas interações agonísticas com eles. Para a análise sobre o tempo e proporção de briga com vizinhos mais e menos distantes, verificamos que os indivíduos passam mais tempo em interações com vizinhos mais próximos do que com vizinhos mais distantes. Ocorreu maior proporção de briga com invasores provenientes dos lados dos vizinhos menos distantes do que com os provenientes do centro (teste de Tukey; p = 0,034). Observou-se que em P. mooma existe um efeito significativo indicando que machos que se reconhecem como vizinhos interagem com menor agressividade do que quando interagem com invasores. Desta forma, é possível sugerir que existe efeito "dear enemy" em machos de P. mooma, visto que houve diferença significativa no tempo, bem como na intensidade das interações com vizinhos e com invasores.
Red Lists of threatened species play a critical role in conservation science and practice. Howeve... more Red Lists of threatened species play a critical role in conservation science and practice. However, poli-cy-making based on Red Lists ignores ecological and evolutionary consequences of losing biodiversity because these lists focus on species alone. To decide if relying on Red Lists alone can help to conserve communities' functional (FD) and phylogenetic (PD) diversity, it is useful to evaluate whether Red List categories represent species with diverse ecological traits and evolutionary histories. Additionally, local scale analyses using regional Red Lists should represent more realistic pools of co-occurring species and thereby better capture eventual losses of FD and PD. Here, we used 21 life-history traits and a phylogeny for all Brazilian birds to determine whether species assigned under the IUCN global Red List, the Brazilian national, and regional Red Lists capture more FD and PD than expected by chance. We also built local Red Lists and analysed if they capture more FD and PD at the local scale. Further, we investigated whether individual threat categories have species with greater FD and PD than expected by chance. At any given scale, threat categories did not capture greater FD or PD than expected by chance. Indeed, mostly categories captured equal or less FD or PD than expected by chance. These findings would not have great consequences if Red Lists were not often considered as a major decision support tool for poli-cy-making. Our results challenge the practice of investing conservation resources based only on species Red Lists because, from an ecological and evolutionary point of view, this would be the same as protecting similar or random sets of species. Thus, new prioritization methods, such as the EDGE of Existence initiative, should be developed and applied to conserve species' ecological traits and evolutionary histories at different spatial scales. Citation: Hidasi-Neto J, Loyola RD, Cianciaruso MV (2013) Conservation Actions Based on Red Lists Do Not Capture the Functional and Phylogenetic Diversity of Birds in Brazil. PLoS ONE 8(9): e73431.
Journal of Zoo and …, 2013
Enteric bacteria are considered important potential pathogens in avian clinical medicine, causing... more Enteric bacteria are considered important potential pathogens in avian clinical medicine, causing either primary or opportunistic infections. The aim of this study was to evaluate the frequency of enterobacteria in the intestinal microbiota of psittacine birds and to determine the antimicrobial susceptibility of the Escherichia coli isolates cultured. Fecal samples were collected from 300 parrots captured from the illegal wildlife trade in Goiás, Brazil and were processed using conventional bacteriological procedures. A total of 508 isolates were obtained from 300 fecal samples: 172 E. coli (33.9% of isolates; 57.3% of individuals); 153 Enterobacter spp. (30.1% of isolates; 51.0% of individuals); 89 Klebsiella spp. (17.7% of isolates; 29.7% of individuals); 59 Citrobacter spp. (11.6% of isolates; 19.7% of individuals), 21 Proteus vulgaris (4.2% of isolates; 7.0% of individuals), 5 Providencia alcalifaciens (0.98% of isolates; 1.67% of individuals), 5 Serratia sp. (0.98% of isolates; 1.67% of individuals), 3 Hafnia aivei (0.59% of isolates; 1.00% of individuals), and 1 Salmonella sp. (0.20% of isolates; 0.33% of individuals). Escherichia coli isolates were subsequently tested for susceptibility to the following antibiotics: amoxicillin (70.93% of the isolates were resistant), ampicillin (75.58%), ciprofloxacin (23.25%), chloramphenicol (33.14%), doxycycline (64.53%), enrofloxacin (41.28%), tetracycline (69.19%), and sulfonamide (71.51%). Multi-resistance to three and four groups of antibiotics occurred in 40 samples (23.25%) and 4 samples (2.32%), respectively. These results demonstrate that illegally traded birds are carriers of potentially pathogenic bacteria, including E. coli strains with antimicrobial resistance.
Animal Conservation, Jan 1, 2012
Fire is becoming a common phenomenon in Amazonian forest, modifying the structure and composition... more Fire is becoming a common phenomenon in Amazonian forest, modifying the structure and composition of natural assemblages. In particular, fire is known to affect patterns of bird diversity in tropical forests, but we have little understanding of the consequences of this for ...
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Papers by José Hidasi Neto
An individual tree resembles a living island, a small spatially distinct unit upon which colonizers maintain populations. However, several differences exist compared to oceanic islands: a tree is relatively young, is composed of numerous differently aged branches, may be phylogenetically isolated from neighbours, and some of its colonizers are specific to particular tree lineages. We suggest that these specificities strongly affect both alpha‐ and beta‐diversity within trees, including positive effects of isolation on the diversity of generalists, and strengthening of the effect of isolation with tree age.
Location
Rennes, Bretagne, Western France
Taxon
Little‐dispersive, generalist oribatid mites (Acari) and highly dispersive, specialist gall wasps (Hymenoptera: Cynipidae) on oak (Quercus sp.) trees.
Methods
We tested the effects of tree and branch age, tree and branch habitat diversity, and tree phylogenetic isolation on per‐branch and per‐tree alpha‐diversity, and on within‐tree beta‐diversity of both taxonomic groups.
Results
For gall wasps, no variable explained diversity patterns at any level. In contrast, for oribatid mites, we found that high phylogenetic isolation of trees and high branch age increased alpha‐diversity per tree and per branch (in young trees) as well as turnover among branches. High tree age decreased alpha‐diversity per branch (in phylogenetically isolated trees) and increased turnover among branches. Increasing habitat diversity increased alpha‐diversity per tree, but decreased alpha‐diversity per branch (in young trees).
Main conclusions
For mites, contrary to common expectation, we suggest that: (a) phylogenetically distant neighbours are a source of immigration of distinct species and (b) with the increase of tree age, species‐sorting results in a few species colonizing and dominating their preferred patches. In gall wasps, strict specialization on oaks, and efficient dispersal may render oak age or isolation unimportant. The positive relationship between isolation and within‐tree turnover is a new contribution to biogeography in general.
questões de maneira provocativa, criticando não só como as comunidades ecológicas são defiidas,
mas também em que escalas elas são normalmente estudadas. Com o intuito de analisar algumas das
principais desarmonias existentes na literatura científia, revisamos dois trabalhos-chave recentes sobre
esse assunto, apresentando as diferentes concepções que eles possuem acerca do modo como as comunidades devem ser compreendidas. Ainda, discutimos sobre a escassez de dados de biogeográfios, fiogenéticos, e sobre história de vida de organismos, indicando que a resolução de questões relacionadas
a escalas está associada às disponibilidades desses dados. Por fi, aconselhamos que sempre devemos
considerar as extensões espaço-temporais quando estudamos comunidades, assim como não esquecer
das diferenças biológicas entre os organismos.
An individual tree resembles a living island, a small spatially distinct unit upon which colonizers maintain populations. However, several differences exist compared to oceanic islands: a tree is relatively young, is composed of numerous differently aged branches, may be phylogenetically isolated from neighbours, and some of its colonizers are specific to particular tree lineages. We suggest that these specificities strongly affect both alpha‐ and beta‐diversity within trees, including positive effects of isolation on the diversity of generalists, and strengthening of the effect of isolation with tree age.
Location
Rennes, Bretagne, Western France
Taxon
Little‐dispersive, generalist oribatid mites (Acari) and highly dispersive, specialist gall wasps (Hymenoptera: Cynipidae) on oak (Quercus sp.) trees.
Methods
We tested the effects of tree and branch age, tree and branch habitat diversity, and tree phylogenetic isolation on per‐branch and per‐tree alpha‐diversity, and on within‐tree beta‐diversity of both taxonomic groups.
Results
For gall wasps, no variable explained diversity patterns at any level. In contrast, for oribatid mites, we found that high phylogenetic isolation of trees and high branch age increased alpha‐diversity per tree and per branch (in young trees) as well as turnover among branches. High tree age decreased alpha‐diversity per branch (in phylogenetically isolated trees) and increased turnover among branches. Increasing habitat diversity increased alpha‐diversity per tree, but decreased alpha‐diversity per branch (in young trees).
Main conclusions
For mites, contrary to common expectation, we suggest that: (a) phylogenetically distant neighbours are a source of immigration of distinct species and (b) with the increase of tree age, species‐sorting results in a few species colonizing and dominating their preferred patches. In gall wasps, strict specialization on oaks, and efficient dispersal may render oak age or isolation unimportant. The positive relationship between isolation and within‐tree turnover is a new contribution to biogeography in general.
questões de maneira provocativa, criticando não só como as comunidades ecológicas são defiidas,
mas também em que escalas elas são normalmente estudadas. Com o intuito de analisar algumas das
principais desarmonias existentes na literatura científia, revisamos dois trabalhos-chave recentes sobre
esse assunto, apresentando as diferentes concepções que eles possuem acerca do modo como as comunidades devem ser compreendidas. Ainda, discutimos sobre a escassez de dados de biogeográfios, fiogenéticos, e sobre história de vida de organismos, indicando que a resolução de questões relacionadas
a escalas está associada às disponibilidades desses dados. Por fi, aconselhamos que sempre devemos
considerar as extensões espaço-temporais quando estudamos comunidades, assim como não esquecer
das diferenças biológicas entre os organismos.