A new sense for living: a comprehensive study about the adaptation process following spinal cord injuries

Este estudo teve como finalidade explorar e descrever o fenómeno de adaptação após lesão medular, enfatizando a explicação das estratégias de adaptação adotadas, e procurando identificar as implicações que têm nos cuidados de enfermagem. A metodologia utilizada foi a Qualitativa, tendo como referência metodológica a Grounded Theory. Para tal, foi dada voz ativa a nove indivíduos que sofreram lesão medular, com um percurso de adaptação de sucesso à nova condição, utilizando a entrevista semidirigida. Foi efetuada também análise documental de alguns relatos de vida, partindo para a análise dos dados à luz da Grounded Theory. Foi possível explicar o fenómeno de adaptação após lesão medular, sendo evidenciada a influência do encontro com um novo sentido da vida, na manutenção da disposição para gerir as consequências que advêm do confronto com uma lesão medular. O tema central do estudo prende-se assim com a dimensão espiritual da pessoa, o que antevê uma intervenção de enfermagem específica nesta área, junto do indivíduo após lesão medular.Este estudio tuvo como finalidad explorar y describir el fenómeno de adaptación después de una lesión medular, enfatizando la explicación de las estrategias de adaptación utilizadas y buscando identificar las implicaciones que tienen en los cuidados de enfermería. La metodología utilizada fue la Cualitativa, teniendo como referencia metodológica la Grounded Theory. Para esto, fue dada voz activa a nueve individuos que sufrieron lesión medular, que atravesaron un período de adaptación con éxito en la nueva condición, utilizando la entrevista semiestructurada. Fue efectuado también un análisis documental de algunos relatos de vida, partiendo para el análisis de los datos a la luz de la Grounded Theory. Fue posible explicar el fenómeno de adaptación después de una lesión medular, colocando en evidenciada la influencia del encuentro con un nuevo sentido de la vida, en la manutención de la disposición para administrar las consecuencias que advienen del enfrentar una lesión medular. El tema central del estudio está relacionado con la dimensión espiritual de la Persona, lo que permite una intervención de enfermería específica en esta área, junto al individuo después de una lesión medular.The present study explores and describes the adaptation phenomena following spinal cord injury, focusing on the applied strategies of adaptation and identifying the necessary nursing care. The research used a qualitative approach, applying the Grounded Theory as a methodological reference. A group of nine individuals who had spinal cord injuries, and who presented a successful adaptation to a new way of life, was assessed by means of semi-directed interviews. Documentary analyses about life histories were performed and the Grounded Theory was used for data analyses. The study allowed for the explanation of the adaptation phenomena following the event of the spinal cord injury, which highlighted the influence of the acceptance of a new meaning of life and the maintenance of the will to manage new situations and challenges stemming from the injury. The central subject of this study is the spiritual dimension of the Individual. This anticipates a specific nursing intervention for people suffering from spinal cord injuries

Viver sozinho depois dos 80 : perfil de saúde e atitudes face à vida sensíveis a cuidados de enfermagem

O aumento da população idosa nos países desenvolvidos é hoje uma realidade e tema de debate e preocupação, confrontando-nos com um cenário de envelhecimento demográfico a par de um aumento do número de idosos a viverem sozinhos em idade avançada. Com toda a vulnerabilidade que o processo de envelhecimento acarreta, em muitas situações já não é mais seguro viver sozinho. Partilhando destas preocupações, o presente estudo teve como objetivo geral explicar o processo de viver sozinho depois dos 80 envelhecendo e identificar as estratégias utilizadas pelas pessoas para a concretização do seu projeto de saúde, por forma a planear intervenções de enfermagem que as ajudem a viver com mais saúde, mais qualidade de vida e maior autonomia, durante mais tempo. Foi realizado um estudo assente no paradigma qualitativo, utilizando especificamente a abordagem designada por Grounded Theory. Fomos assim ao encontro de 30 pessoas com mais de 80 anos a viverem sozinhas em sua casa, utilizando como principal estratégia de colheita de dados a entrevista semi-dirigida. Foi também aplicado um formulário de colheita de dados para caracterização sociodemográfica, que incluiu alguns instrumentos de avaliação para melhor caracterizar a amostra. Procedemos à análise dos dados colhidos através do método das comparações constantes. Verificou-se que o processo de viver sozinho depois dos 80 envelhecendo, é modulado por condições contextuais deste “arranjo familiar” e por condições influenciadoras traduzidas em cinco áreas principais: as características pessoais e a autonomia, o suporte familiar, o estado de saúde, a situação financeira e a espiritualidade. Por sua vez as condições contextuais serão determinantes das estratégias adotadas, conducentes à manutenção da saúde e qualidade de vida pelo maior tempo possível, permitindo manterem-se a viver sós nas suas casas. Emergiram da análise indutiva dos dados três atitudes diferentes face à vida depois dos 80: os Independentes, os Resignados e os Amargurados, tendo em consideração as possibilidades de perfis de saúde: os vulneráveis e os resilientes, com implicações específicas para a enfermagem. O conhecimento dos enfermeiros acerca deste processo facilitará uma prática de enfermagem adequada e específica de acordo com as diferentes atitudes face à vida daqueles que envelhecem sozinhos na comunidade depois dos 80.The increase of the elderly population in developed countries is now a reality and a topic of debate and concern, confronting us with a scenario of demographic aging along with an increase in the number of elderly people living alone in old age. With all the vulnerability that the aging process entails, in many situations it is no longer safe to live alone. Sharing these concerns, the goal of this study was to explain the process of living alone over the age of 80 and to identify the strategies used by people to achieve their health project, in order to plan nursing interventions that helps them live with more health, more quality of life and greater autonomy, for longer. The study was based on the qualitative paradigm, specifically using the approach called Grounded Theory. We were thus to meet 30 people over 80 years old living alone in their home, using the semi-directed interview as the main data collection strategy. A data collection form was also applied for sociodemographic characterization, which included some evaluation tools to better characterize the sample. We proceeded to the analysis of the collected data through the method of constant comparisons. It was verified that the process of living alone over the age of 80 is modulated by contextual conditions of this “living arrangement” and by influencing conditions translated into five main areas: personal characteristics and autonomy, family support, health status, financial situation and spirituality. In turn, the contextual conditions will be determinant of the adopted strategies, conducive to the maintenance of health and quality of life for the longest possible time, allowing them to remain living alone in their houses. Three different attitudes to life of those who live alone over the age of 80 emerged from the inductive analysis of the data: the Independent, the Resigned and the Bitter, taking into account the possibilities of health profiles: the vulnerable and the resilient, with specific implications for nursing. Nurses' knowledge about this process will facilitate an adequate and specific nursing practice according to the different attitudes towards life of those who grow old in the community over the age of 80

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

AimAmazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types.LocationAmazonia.TaxonAngiosperms (Magnoliids; Monocots; Eudicots).MethodsData for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny.ResultsIn the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types.Main ConclusionNumerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran\u27s eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R$^{2}$ = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R$^{2}$ = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution

Consistent patterns of common species across tropical tree communities

Trees structure the Earth’s most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations1,2,3,4,5,6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth’s 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world’s most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees.Publisher PDFPeer reviewe

Rarity of monodominance in hyperdiverse Amazonian forests.

Tropical forests are known for their high diversity. Yet, forest patches do occur in the tropics where a single tree species is dominant. Such "monodominant" forests are known from all of the main tropical regions. For Amazonia, we sampled the occurrence of monodominance in a massive, basin-wide database of forest-inventory plots from the Amazon Tree Diversity Network (ATDN). Utilizing a simple defining metric of at least half of the trees ≥ 10 cm diameter belonging to one species, we found only a few occurrences of monodominance in Amazonia, and the phenomenon was not significantly linked to previously hypothesized life history traits such wood density, seed mass, ectomycorrhizal associations, or Rhizobium nodulation. In our analysis, coppicing (the formation of sprouts at the base of the tree or on roots) was the only trait significantly linked to monodominance. While at specific locales coppicing or ectomycorrhizal associations may confer a considerable advantage to a tree species and lead to its monodominance, very few species have these traits. Mining of the ATDN dataset suggests that monodominance is quite rare in Amazonia, and may be linked primarily to edaphic factors

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega‐phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white‐sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long‐standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions