Laboratório de Ecologia Vegetal UERJ

Laboratório de Ecologia Vegetal UERJ Página do Laboratório de Ecologia Vegetal (LEV) do Departamento de Ecologia UERJ

Laboratório de Ecologia Vegetal (LEV) do Departamento de Ecologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ. Os projetos desenvolvidos pela equipe do Laboratório de Ecologia Vegetal (LEV) estão relacionados à ecologia funcional, ecofisiologia, diversidade funcional, diversidade filogenética, montagem de comunidades, ecohidro

logia, interações biosfera-atmosfera e funcionamento de ecossistemas. Professores:
-Bruno Henrique Pimentel Rosado
-Elizabeth dos Santos Rios

Pós-doutorado:
-André Tavares Corrêa Dias

Alunos Pós-graduação:
-Indira Lopes Emérito
-Lucas Costa Monteiro Lopes
-Thiago Amorim

Alunos Iniciação Científica:
-Dario Caminha Paiva
-Jessica Castelo Branco Teixeira Azevedo
-Laís Barbalioli Macedo
-Lidiane Cordeiro de Almeida
-Michele Lima

01/07/2023
Nosso artigo "On the biological concept of stress" já está disponível no site da Trends in Ecology and Evolution!!
25/06/2023

Nosso artigo "On the biological concept of stress" já está disponível no site da Trends in Ecology and Evolution!!

Trends in Ecology & EvolutionAvailable online 24 June 2023In Press, Corrected ProofWhat’s this?LetterOn the biological concept of stressAuthor links open overlay panelBruno H.P. Rosado 1 @, Helena Roland 1 2, Yan C.S. Moraes 1 3Show moreShareCitehttps://doi.org/10.1016/j.tree.2023.06.001Get rights...

Mais um artigo do LEV! Neste estudo derivado da tese de doutorado de Luiz Bondi, nós desmistificamos a ideia de convergê...
24/01/2023

Mais um artigo do LEV! Neste estudo derivado da tese de doutorado de Luiz Bondi, nós desmistificamos a ideia de convergência ecológica em plantas vasculares tolerantes à dessecação!

Desiccation-tolerant vascular plants (DT plants) are able to tolerate the desiccation of their vegetative tissues and, because of that, two untested paradigms can be found in the literature, despite the contradictions to theoretical premises and empirical findings. First, it is widely accepted that DT plants form a convergent group of specialist plants to water deficit conditions. A derived paradigm is that the DT plants are placed at the extreme end of stress tolerance. Here, we tested the hypotheses that (1) DT plants are in fact convergent specialists for water deficit conditions and (2) exhibit ecological strategies related to stress-tolerance, conservative resource-use and survival.

Methods
We used biogeographical and functional-traits approaches to address the mentioned paradigms and assess the species' ecological strategies. For that, 27 DT plants were used and compared to 27 phylogenetically related desiccation-sensitive vascular plants (DS plants).

Key Results
We could not confirm either of the two hypotheses. We found that despite converging in desiccation tolerance, DT plants differ in relation to the conditions they occur and the ecological strategies to deal with water deficit. We found that some DT plants exhibit advantageous responses for higher growth and resource acquisition, which are suitable responses to cope with more productive conditions or with higher disturbance. We discuss that the ability to tolerate desiccation could compensate for a drought vulnerability promoted by higher investment in growth and bring advantages to deal with quick and pronounced variation of water, rather than to drought solely.

Conclusions
DT plants are not only selected by drought as an environmental constraint. The alternative functional designs could promote the diversity of ecological strategies, which preclude their convergence to the same resources and conditions. Thus, DT plants are a heterogeneous group of plants in how they deal with drought, despite their desiccation tolerance ability.

AbstractBackground and Aims. Desiccation-tolerant vascular plants (DT plants) are able to tolerate the desiccation of their vegetative tissues and, because of t

Artigo recém publicado na Biological Conservation com a coautoria do Prof. Bruno Rosado. Este artigo de Ecologia Polític...
10/01/2023

Artigo recém publicado na Biological Conservation com a coautoria do Prof. Bruno Rosado. Este artigo de Ecologia Política é um fundamental contraponto a outro artigo recém publicado, no mesmo periódico, que abordou de maneira colonialista e ra***ta as causas da crise da biodiversidade.

Abstract

Human population (often treated as overpopulation) has long been blamed as the main cause of biodiversity loss. Whilst this simplistic explanation may seem convenient, understanding the accuracy of the statement is crucial to develop effective priorities and targets to manage and reverse ongoing biodiversity loss. If untrue, the assertion may undermine practical and effective measures currently underway to counter biodiversity loss by distracting from true drivers, alienating some of the most diverse countries in the world, and failing to tackle the structural inequalities which may be behind global biodiversity declines. Through examining the drivers of biodiversity loss in highly biodiverse countries, we show that it is not population driving the loss of habitats, but rather the growth of commodities for export, particularly soybean and oil-palm, primarily for livestock feed or biofuel consumption in higher income economies. Thus, inequitable consumption drives global biodiversity loss, whilst population is used to scapegoat responsibility. Instead, the responsibilities are clear and have recently been summarized by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services IPBES: Leverage points for biodiversity conservation lie in reducing unsustainable consumption through diet shifts, tracking supply chains, and technological innovation as well as ensuring sustainable production to reduce biodiversity losses associated with industrial agriculture.

Human population (often treated as overpopulation) has long been blamed as the main cause of biodiversity loss. Whilst this simplistic explanation may…

Mais um artigo do LEV, desta vez na revista britânica Journal of Experimental Botany e com direito a uma das fotos do ar...
10/01/2023

Mais um artigo do LEV, desta vez na revista britânica Journal of Experimental Botany e com direito a uma das fotos do artigo ter sido selecionada para capa do volume! Artigo derivado do Mestrado de Julia Drummond, orientanda do Prof. Bruno Rosado
A interação das plantas com os eventos de chuva, neblina e orvalho é um tema altamente relevante já que as mudanças climáticas estão afetando os padrões destes fatores ambientais. Neste sentido, investigar como a vegetação retém ou escoa a água é crucial para previsões robustas de mudanças no ciclo hidrológico. No entanto, além de ainda ser um tema pouco estudado, o que abordamos nesse artigo é a necessidade da inclusão de um importante elo que falta na caracterização do papel da vegetação em processos ecohidrológicos: o fato de as folhas não serem superfícies limpas, mas um mosaico heterogêneo de manchas com diferentes níveis de molhabilidade, já que são colonizadas por organismos da filosfera (musgos, líquens, fungos e bactérias) cada um com diferentes capacidades de reter e escoar água.
Com base no conceito do holobionte, a combinação de características da planta e da filosfera, apontamos como a filosfera deve ser incluída na caracterização do papel ecohidrológico da vegetação e de que maneira está inserção será crucial no entendimento das respostas e efeitos da vegetação no cenário de mudança climática. https://academic.oup.com/jxb/article/73/22/7204/6702375

Bruno Rosado

Call for submission of the Special Issue: Linking traits with species functions, populations dynamics, community assembl...
10/01/2023

Call for submission of the Special Issue: Linking traits with species functions, populations dynamics, community assembly and ecosystem function

ObituaryIn memoriam – Professor Dr. Eduardo Arcoverde de Mattos  Eduardo was an inspiring plant scientist who encouraged...
27/06/2022

Obituary

In memoriam – Professor Dr. Eduardo Arcoverde de Mattos

Eduardo was an inspiring plant scientist who encouraged everyone to think and question the meaning of concepts, hypotheses, and ecological theories. At the beginning of his career during the 80`s, still as an undergraduate student at the Federal University of Rio de Janeiro, he began his studies on inselberg plants and their survival mechanisms to abiotic stress. It began there, on the sloping rocks of Rio de Janeiro, the ascent of a great scientist whose legacy spans generations. In the following years, from 1990 to 1996, as a master and doctoral student at the Federal University of São Carlos, he made contributions to the ecophysiological knowledge of gas exchange, water relations and oligotrophic sclemorphism in Cerrado plants. As a PhD student, he spent some months at the University of Darmstadt in Germany under the supervision of Professor Ulrich Luttge studying photosynthesis and gas exchanges. From this fruitful partnership and due to his great dedication to science and critical thinking, Eduardo conducted studies on chlorophyll fluorescence during crassulacean acid metabolism (CAM)-phases, expression of CAM, mechanism allowing plants switching from C3-photosynthesis to CAM and gas exchanges, leading to a remarkable scientific production placing him as one of the most prominent Brazilian researchers in this field during the following years.
He returned to Rio de Janeiro in 1999 consolidating his career as a Professor in the Department of Ecology at the Federal University of Rio de Janeiro (UFRJ). In partnership with Professors Fabio Rubio Scarano and Dorothy Sue Dunn de Araujo, he conducted pioneering research on the ecophysiology of Restingas, Campos de Altitude and Atlantic Forest plant species, in addition to continuing research in the Cerrado and Campos Rupestres. He published more than 60 papers and book chapters, guided more than thirty undergraduate, master’s and doctoral students and post-docs with dedication, patience and, above all, affection.
During the following years, he expanded his interests resulting in important contributions to plant ecophysiology to the role of morphological, hydraulical and reproductive traits to explain mechanisms associated with plant community assembly and their responses to environmental changes. These research lines lead to high impact publications about the importance of functional trait networks and alternative plant designs for community assembly and their consequences to ecosystem functioning. Recently, despite the moment of scientific, educational and humanistic setbacks we are living in Brazil, he never gave up fighting in the best way he believed to make the world a better place: guiding his students and teaching his classes with great dedication.
Between 2011 and 2014, Eduardo was the Coordinator of the Ecology Graduation Course at UFRJ, contributing to create a rich academic environment which was friendly to the debate and exchange of ideas, as he liked to say. In 2019, he started to dedicate himself with enthusiasm to Agroecology which he believed could be a way to bring back hope to students and, especially, to foster environment conservation and socio-environmental justice. He never placed himself in a higher hierarchical position, he respected his students and colleagues, always promoting, with a sense of humor, an environment rich in ideas and dedication to science. He leaves not only a legacy as a scientist, but a human legacy due to his influence on the training of students, scientists and teachers.
Eduardo passed away prematurely, at the age of 57, before making all the great contributions he would still make to science and to the education of so many students. It was a great honor for us, former students but also friends and co-workers, to learn and share so much. We, like so many others that had such privilege, are honored to carry on his legacy for science, education and environmental conservation in Brazil.

Bruno H. P. Rosado (Universidade do Estado do Rio de Janeiro)
André T. C. Dias, Dulce Mantuano, Rita de Cássia Quitete Portela (Universidade Federal do Rio de Janeiro)
Giselle Rôças (Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro)

Eduardo was an inspiring plant scientist who encouraged everyone to think and question the meaning of concepts, hypotheses, and ecological theories. At the beginning of his career during the 80`s, still as an undergraduate student at the Federal University of Rio de Janeiro, he began his studies on....

Artigo que acaba de ser publicado no Journal of Ecology. Mais um fruto da tese de Ilaíne Matos, ex-orientanda de doutora...
16/06/2022

Artigo que acaba de ser publicado no Journal of Ecology. Mais um fruto da tese de Ilaíne Matos, ex-orientanda de doutorado do Prof. Bruno Rosado no LEV UERJ

Current niche segregation frameworks (two-layer model) consider that ground-rooted plants obtain resources almost exclusively via root-absorption from soil, thus neglecting the importance of occult p...

Com imenso pesar informamos o falecimento do Professor do Laboratório de Ecologia Vegetal, Departamento de Ecologia da U...
12/06/2022

Com imenso pesar informamos o falecimento do Professor do Laboratório de Ecologia Vegetal, Departamento de Ecologia da UFRJ, Eduardo Arcoverde de Mattos na noite de ontem. Um grande professor e amigo que deixa um enorme legado para a ciência brasileira, para gerações de cientistas e para todos que tiveram o privilégio de conhecê-lo.

Informações do Velório -
Data: 12/06/2022
Local: Parque da Colina, Niterói. Capela 3.
Horário:
13:45 - início do velório
15:45 - enterro

E acaba de sair no Journal of Ecology mais um fruto da tese de Doutorado da Ilaine Matos!  O que propomos é uma expansão...
31/05/2022

E acaba de sair no Journal of Ecology mais um fruto da tese de Doutorado da Ilaine Matos! O que propomos é uma expansão do modelo de nicho hidrológico das plantas - ainda focado em explicar segregação de nicho, interações de espécies e coexistência quase que exclusivamente por diferenças radiculares - negligenciando os eventos de precipitação oculta (neblina, orvalho) que podem alterar o status hídrico das plantas através de processos como a absorção de água foliar.

1. Occult precipitation events (fog, dew, light-rain) can alter plant water and nutritional status, both directly through the aerial uptake of surface water and nutrients, and indirectly via redistri...

Mais um artigo publicado recentemente com a participação da equipe do LEV. We highlight the importance of the phyllosphe...
17/06/2021

Mais um artigo publicado recentemente com a participação da equipe do LEV. We highlight the importance of the phyllosphere for the nitrogen input in the Amazon forest, and how El-Nino may impact total N inputs and likely alter forest productivity

Biological nitrogen fixation is a key process for the maintenance of natural ecosystems productivity. In tropical forests, the contribution of asymbio…

Fruto de uma colaboração de mais de 100 pesquisadores mundo afora, dentre eles o Prof. Bruno Rosado, o artigo "Global tr...
17/06/2021

Fruto de uma colaboração de mais de 100 pesquisadores mundo afora, dentre eles o Prof. Bruno Rosado, o artigo "Global transpiration data from sap flow measurements: the SAPFLUXNET database" acaba de ser publicado na Earth System Science Data

Abstract. Plant transpiration links physiological responses of vegetation to water supply and demand with hydrological, energy, and carbon budgets at the land–atmosphere interface. However, despite being the main land evaporative flux at the g...

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Rio De Janeiro, RJ
20550900

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