Soil spiders (Arachnida: Araneae) in native and reforested Araucaria forests

Spiders are part of the soil biodiversity, considered fundamental to the food chain hierarchy, directly and indirectly influencing several services in agricultural and forest ecosystems. The present study aimed to evaluate the biodiversity of soil spider families and identify which soil properties influence their presence, as well as proposing families as potential bioindicators. Native forest (NF) and reforested sites (RF) with Araucaria angustifolia (Bertol.) Kuntze were evaluated in three regions of the state São Paulo, both in the winter and summer. Fifteen soil samples were collected from each forest to evaluate the biological (spiders and microbiological), chemical and physical soil properties, in addition to properties of the litter (dry matter and C, N and S contents). For soil spiders, two sampling methods were used: pitfall traps and soil monoliths. In total, 591 individuals were collected, and distributed in 30 families, of which 306 individuals (22 families) came from pitfall traps and 285 individuals (26 families) from monoliths. Only samples obtained by the monolith method revealed seasonal differences in the mean density and richness of spiders between NF and RF. Canonical discriminant analysis showed the separation of these forests of Araucaria. Principal Component Analysis demonstrated the correlation of a number of spider families with certain soil properties (organic carbon, basal respiration, metabolic quotient, litter carbon, total porosity, bulk density and soil moisture). We identified 10 families (Anapidae, Corinnidae, Dipluridae, Hahniidae, Linyphiidae, Lycosidae, Nemesiidae, Palpimanidae, Salticidae, Scytodidae) that contributed most to separating native forest from the replanted forest, indicating the possibility of the spiders being used as bioindicators

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Alien Registration- Deraps, Alphee (Upton, Oxford County)

https://digitalmaine.com/alien_docs/13979/thumbnail.jp

Simpatectomia lombar por pneumoretroperitonioscopia (SLPR)

CONTEXTO: A simpatectomia ainda encontra indicação no tratamento de várias doenças, tais como a insuficiência arterial periférica crônica aterosclerótica grau IV (Fontaine) sem condições de revascularização, úlceras hipertensivas e o fenômeno de Raynaud acompanhado de lesões tróficas. A cirurgia clássica é realizada através do acesso retroperitoneal, mas também pode ser realizada por meio de técnicas minimamente invasivas. OBJETIVO: Este trabalho tem o objetivo de mostrar os resultados da simpatectomia lombar por pneumoretroperitonioscopia. MÉTODOS: Trinta e um pacientes foram submetidos a simpatectomia lombar por pneumoretroperitonioscopia (22 homens e nove mulheres), com média de idade de 48 anos (41-70). Vinte eram pacientes com insuficiência arterial periférica crônica, sem possibilidade de revascularização, todos com lesões (necroses ou úlceras); sete pacientes eram portadores de tromboangeite obliterante; três tinham úlcera hipertensiva; e um apresentava fenômeno de Raynaud secundário. As cirurgias foram realizadas por pneumoretroperitoneoscopia, sendo feita a exérese do segundo ao quarto gânglio da cadeia lombar. RESULTADOS: Não houve complicações intra-operatórias, havendo necessidade de apenas uma conversão para cirurgia convencional por dificuldade técnica. A duração média do procedimento foi de 103 minutos e o tempo médio de internação foi de 2 dias. CONCLUSÃO: A simpatectomia pode ser realizada por pneumoretroperitonioscopia com as vantagens de uma cirurgia minimamente invasiva

Necrose cutânea induzida por antagonistas da vitamina K

Os anticoagulantes orais que atuam através do antagonismo à vitamina K são utilizados na prática clínica há muito tempo, porém ainda há dificuldades no seu manejo e na condução das complicações. Entre as complicações, as mais conhecidas são os transtornos hemorrágicos, mas outras também devem ser reconhecidas, tais como a necrose induzida por varfarina. Esta é uma grave, porém rara complicação, cuja fisiopatologia é ainda obscura e cujas causas são indefinidas. Dentre as possíveis causas, as mais prováveis são a deficiência de proteína C e de proteína S, reações de hipersensibilidade e deficiência de fator VII. Há maior incidência desta complicação entre mulheres de meia-idade, acometendo preferencialmente mamas e glúteos. As medidas mais importantes para o tratamento são: suspensão imediata da droga, uso de heparina não fracionada ou de baixo peso molecular em doses terapêuticas, emprego da vitamina K e, eventualmente, infusão de plasma fresco congelado ou de proteína C ativada recombinante

Tratamento endovascular de aneurisma de artéria poplítea Endovascular treatment of popliteal artery aneurysm

CONTEXTO: Dos aneurismas periféricos, o da artéria poplítea é o mais freqüente, correspondendo a 70 a 80% dos casos. O tratamento cirúrgico convencional consta de exclusão do aneurisma e interposição de enxerto em ponte ou de ressecção parcial ou total do aneurisma e reconstrução arterial com enxerto em continuidade. O tratamento endovascular surgiu como uma alternativa ao reparo convencional. OBJETIVO: Avaliar o uso de endoprótese para o tratamento endovascular do aneurisma de artéria poplítea. METODOLOGIA: Num total de 17 pacientes, todos do sexo masculino, 11 foram tratados por técnica endovascular, utilizando-se próteses Hemobahn e Viabahn. RESULTADOS: Um paciente apresentou pseudo-aneurisma no pós-operatório imediato. Dentre as complicações tardias, um paciente apresentou endoleak distal da prótese após 7 meses, e houve oclusão da endoprótese em outro. Os nove pacientes restantes apresentaram controle de eco-Doppler satisfatório aos 20 meses, resultando em uma perviedade primária de 90% em um período médio de 27 meses de seguimento. CONCLUSÃO: O tratamento endovascular para aneurisma de artéria poplítea é factível e apresenta algumas vantagens em relação ao tratamento aberto, como menor tempo de internação e de recuperação.BACKGROUND: The most commonly occurring aneurysms in the periphery are those involving the popliteal artery. They comprise 70-80% of all such aneurysms. Conventional aneurysm repair consists of either opening the aneurysm sac and interposing a bypass graft or aneurysm ligation combined with bypass grafting. Endovascular treatment is an alternative to conventional repair. OBJECTIVE: To evaluate use of stent graft in the endovascular treatment of popliteal artery aneurysms. METHODS: We analyzed 17 male patients; of these, 11 were treated with endovascular stent graft, using Hemobahn and Viabahn stent grafts. RESULTS: One patient had pseudoaneurysm in the immediate postoperative period. Among late complications, one patient had distal endoleak after 7 months, and there was stent graft occlusion in another patient. The remaining nine patients had satisfactory Doppler ultrasonography control at 20 months, which resulted in a primary patency of 90% over mean follow-up time of 27 months. CONCLUSION: Endovascular repair of a popliteal artery aneurysm is feasible and has some advantages compared with the open treatment, such as shorter hospital stay and recovery