Encontrados 15 documentos, a visualizar página 1 de 2
Shifts in plant functional groups along an aridity gradient in a tropical dry f...
de Oliveira, Ana Cláudia Pereira; Nunes, Alice; Oliveira, Maria Alexandra; Oliveira, Rafael S.; Rodrigues, Renato Garcia; Branquinho, CristinaIncreasing aridity associated with climate change may lead to the crossing of critical ecosystem thresholds in drylands, compromising ecosystem services for millions of people. In this context, finding tools to detect at early stages the effects of increasing aridity on ecosystems is extremely urgent to avoid irreversible damage. Here, we assess shifts in plant community functional structure along a spatial ari...
Biome Awareness Disparity is BAD for tropical ecosystem conservation and restor...
Silveira, Fernando A. O.; Ordóñez-Parra, Carlos A.; Moura, Livia C.; Schmidt, Isabel B.; Andersen, Alan N.; Bond, William; Buisson, EliseMade available in DSpace on 2022-04-28T19:46:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; We introduce the concept of Biome Awareness Disparity (BAD)—defined as a failure to appreciate the significance of all biomes in conservation and restoration policy—and quantify disparities in (a) attention and interest, (b) action and (c) knowledge among biomes in tropical restoration science, practice...
Drought response strategies of deciduous and evergreen woody species in a seaso...
Souza, Bruno Cruz de; Carvalho, Ellen Cristina Dantas; Oliveira, Rafael S.; Araujo, Francisca Soares de; Lima, André Luiz Alves deDeciduous and evergreen trees are usually considered the main coexisting functional groups in seasonally dry tropical forests (SDTF). We compared leaf and stem traits of 22 woody species in the Brazilian Caatinga to investigate whether deciduous (DC) and evergreen (EV) species have divergent water-use strategies. Our hypothesis was that DC trees compensate for their short leaf longevity by being less conservati...
Lignin composition is related to xylem embolism resistance and leaf life span i...
Lima, Taysla R. A.; Carvalho, Ellen C. D.; Martins, Fernando R.; Oliveira, Rafael S.; Miranda, Rafael S.; Muller, Caroline S.; Pereira, LucianoWood properties influence the leaf life span (LL) of tree crowns. As lignin is an important component of wood and the water transport system, we investigated its relationship with embolism resistance and the LL of several tree species in a seasonally dry tropical ecosystem. We determined total lignin and the monomer contents of guaiacyl (G) and syringyl (S) and related them to wood traits and xylem vulnerabilit...
Diversification of Prochilodus in the eastern Brazilian Shield: Evidence from c...
Santos, Rosiane P.; Melo, Bruno F. [UNESP]; Yazbeck, Gabriel M.; Oliveira, Rafael S.; Hilario, Heron O.; Prosdocimi, Francisco; Carvalho, Daniel C.Made available in DSpace on 2021-06-25T11:57:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-05-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); The Neotropical fish genus Prochilodus includes five species occurring in the main drainages of the eastern Brazilian Shield: P. argenteus, P. costatus, P. lineatus, P. ha...
Myth-busting tropical grassy biome restoration
Silveira, Fernando A. O.; Arruda, André J.; Bond, William; Durigan, Giselda; Fidelis, Alessandra [UNESP]; Kirkman, Kevin; Oliveira, Rafael S.Made available in DSpace on 2020-12-12T01:36:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; The historical focus in research and policy on forest restoration and temperate ecosystems has created misunderstandings for the restoration of tropical and subtropical old-growth grassy biomes (TGB). Such misconceptions have detrimental consequences for biodiversity, ecosystem services, and human livel...
Age-dependent leaf physiology and consequences for crown-scale carbon uptake du...
Albert, Loren P.; Wu, Jin; Prohaska, Neill; Camargo, Plínio Barbosa de; Huxman, Travis E.; Tribuzy, Edgard Siza; Ivanov, Valeriy Yu; Oliveira, Rafael S.Satellite and tower-based metrics of forest-scale photosynthesis generally increase with dry season progression across central Amazônia, but the underlying mechanisms lack consensus. We conducted demographic surveys of leaf age composition, and measured the age dependence of leaf physiology in broadleaf canopy trees of abundant species at a central eastern Amazon site. Using a novel leaf-to-branch scaling appro...
The importance of hydraulic architecture to the distribution patterns of trees ...
Cosme, Luiza H.M.; Schietti, Juliana; Costa, Flávia Regina Capellotto; Oliveira, Rafael S.Species distributions and assemblage composition may be the result of trait selection through environmental filters. Here, we ask whether filtering of species at the local scale could be attributed to their hydraulic architectural traits, revealing the basis of hydrological microhabitat partitioning in a Central Amazonian forest. We analyzed the hydraulic characteristics at tissue (anatomical traits, wood speci...
Embolism resistance drives the distribution of Amazonian rainforest tree specie...
Oliveira, Rafael S.; Costa, Flávia Regina Capellotto; van Baalen, Emma Jan A.; Jonge, Arjen de; Bittencourt, Paulo R.L.; Almanza, YaninaSpecies distribution is strongly driven by local and global gradients in water availability but the underlying mechanisms are not clear. Vulnerability to xylem embolism (P 50 ) is a key trait that indicates how species cope with drought and might explain plant distribution patterns across environmental gradients. Here we address its role on species sorting along a hydro-topographical gradient in a central Amazo...
Can traits predict individual growth performance? A test in a hyperdiverse trop...
Poorter, L.; Castilho, Carolina Volkmer; Schietti, Juliana; Oliveira, Rafael S.; Costa, Flávia Regina CapellottoThe functional trait approach has, as a central tenet, that plant traits are functional and shape individual performance, but this has rarely been tested in the field. Here, we tested the individual-based trait approach in a hyperdiverse Amazonian tropical rainforest and evaluated intraspecific variation in trait values, plant strategies at the individual level, and whether traits are functional and predict ind...