12 research outputs found
The Role of Alien Species on Plant-Floral Visitor Network Structure in Invaded Communities
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The interactions between pairs of native and alien plants via shared use of pollinators have been widely studied. Community level studies however, are necessary in order to fully understand the factors and mechanisms that facilitate successful plant invasion, but these are still scarce. Specifically, few community level studies have considered how differences in invasion level (alien flower abundance), and degree of floral trait similarity between native and invasive species, mediate effects on native plant-pollinator communities. Here, we evaluated the role of alien species on overall plant-floral visitor network structure, and on species-level network parameters, across nine invaded coastal communities distributed along 205 km in YucatĂĄn, MĂ©xico that vary in alien species richness and flower abundance. We further assessed the potential the role of alien plant species on plant-floral visitor network structure and robustness via computational simulation of native and invasive plant extinction scenarios. We did not find significant differences between native and alien species in their functional floral phenotypes or in their visitation rate and pollinator community composition in these invaded sites. Variation in the proportion of alien plant species and flower abundance across sites did not influence plant-pollinator network structure. Species-level network parameters (i.e., normalized degree and nestedness contribution) did not differ between native and alien species. Furthermore, our simulation analyses revealed that alien species are functionally equivalent to native species and contribute equally to network structure and robustness. Overall, our results suggest that high levels of floral trait similarity and pollinator use overlap may help facilitate the integration of alien species into native plant-pollinator networks. As a result, alien species may also play a similar role than that of natives in the structure and stability of native plant and pollinator communities in the studied coastal sand dune ecosystem
Angiosome study of the first digital feet space, for reconstruction of the digital tip
Background: The concept of angiosome explains the anatomical variations that exist between the vessels of different regions of the body and helps to understand the contributions of arterial blood supply to the skin and adjacent structures, dividing the human body into three-dimensional vascular blocks.Methods: This was an observational and descriptive study. In both lower extremities of 5 corpses with adequate tissue preservation in the operating room attached to the teaching area of the National Institute of Forensic Sciences in Mexico City. Angiosome study of the medial neurocutaneous flap of the second toe of both feet was performed.Results: The average, in centimeters, of the surface of the flaps was 1.57 cm x 2.47 cm, the average diameter of the inter-metatarsal digital artery was 1.1 millimeters and the average diameter of the veins draining the angiosome was 1.4 millimeters. The most constant anatomy was that of the nerve, which was present in all cases, with the digital nerve forming the neurosome of the flap.Conclusions: To obtain optimal results in microsurgery transfers, it is necessary to have a technique that is quick for harvesting the flap and with adequate systematization so as not to injure the neurovascular bundle, this is achieved through complete anatomical knowledge, without forgetting the main variants
Reverse-flow anterolateral thigh flap for knee soft-tissue reconstruction: case report
The reconstruction of the injured tissue around the knee is a complex procedure for the plastic and orthopaedic surgeon. The objective is to provide an acceptable function and aesthetic result. Successful wound management includes meticulous debridement, planning and proper execution of the surgical procedure. An 11-year-old male patient with a right patellar fracture using an anterolateral thigh flap with reverse flow to cover the skin defect. For such purposes, the reverse flow anterolateral flap is an effective, trustworthy and well-documented option. The correct obtaining and implantation of the flap reduces the morbidity of the donor site, offers options in size and design, an adequate length of the pedicle and the possible combination with the fascia lata in case it is required. The versatility of the reverse flow anterolateral flap makes it a possible therapeutic alternative in reconstructive surgery since it is aesthetic and functional for the reconstruction of tissue near the knee joint
Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries
Abstract
Background
Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres.
Methods
This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and lowâmiddle-income countries.
Results
In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of âsingle-useâ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for lowâmiddle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia.
Conclusion
This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both highâ and lowâmiddleâincome countries
The role of alien species on plant-floral visitor network structure in invaded communities
The interactions between pairs of native and alien plants via shared use of pollinators have
been widely studied. Community level studies however, are necessary in order to fully
understand the factors and mechanisms that facilitate successful plant invasion, but these
are still scarce. Specifically, few community level studies have considered how differences
in invasion level (alien flower abundance), and degree of floral trait similarity between native
and invasive species, mediate effects on native plant-pollinator communities. Here, we evaluated
the role of alien species on overall plant-floral visitor network structure, and on species-
level network parameters, across nine invaded coastal communities distributed along
205 km in YucataÂŽn, MeÂŽxico that vary in alien species richness and flower abundance. We
further assessed the potential the role of alien plant species on plant-floral visitor network
structure and robustness via computational simulation of native and invasive plant extinction
scenarios. We did not find significant differences between native and alien species in their
functional floral phenotypes or in their visitation rate and pollinator community composition
in these invaded sites. Variation in the proportion of alien plant species and flower abundance
across sites did not influence plant-pollinator network structure. Species-level network
parameters (i.e., normalized degree and nestedness contribution) did not differ
between native and alien species. Furthermore, our simulation analyses revealed that alien
species are functionally equivalent to native species and contribute equally to network structure
and robustness. Overall, our results suggest that high levels of floral trait similarity and
pollinator use overlap may help facilitate the integration of alien species into native plant-pollinator
networks. As a result, alien species may also play a similar role than that of natives in
the structure and stability of native plant and pollinator communities in the studied coastal
sand dune ecosystemPeer reviewe
Pacto Nacional por la InnovaciĂłn TecnolĂłgica
Se expone en este documento el Pacto Nacional por la InnovaciĂłn TecnolĂłgica, el cual busca promover la generaciĂłn de una gran dinĂĄmica para el fortalecimiento de capacidades sociales, el enriquecimiento intelectual y la tolerancia polĂtica en los procesos de toma de decisiones, umbrales suficientes de infraestructura cientĂfica y tecnolĂłgica, respeto por el conocimiento tradicional, la apropiaciĂłn social de la ciencia y el fortalecimiento de una motivaciĂłn colectiva por la tecnologĂ
Sensitivity of South American tropical forests to an extreme climate anomaly
NERC Knowledge Exchange Fellowship (NE/V018760/1) to E.N.H.C.The tropical forest carbon sink is known to be drought sensitive, but it is unclear which forests are the most vulnerable to extreme events. Forests with hotter and drier baseline conditions may be protected by prior adaptation, or more vulnerable because they operate closer to physiological limits. Here we report that forests in drier South American climates experienced the greatest impacts of the 2015â2016 El Niño, indicating greater vulnerability to extreme temperatures and drought. The long-term, ground-measured tree-by-tree responses of 123 forest plots across tropical South America show that the biomass carbon sink ceased during the event with carbon balance becoming indistinguishable from zero (â0.02 ± 0.37 Mg C haâ1 per year). However, intact tropical South American forests overall were no more sensitive to the extreme 2015â2016 El Niño than to previous less intense events, remaining a key defence against climate change as long as they are protected.Publisher PDFPeer reviewe
The role of alien species on plant-floral visitor network structure in invaded communities
3er. Coloquio: Fortalecimiento de los Colectivos de Docencia
Las memorias del 3er. Coloquio de Fortalecimiento de Colectivos de Docencia
deben ser entendidas como un esfuerzo colectivo de la comunidad de académicos de la División de Ciencias y Artes para el Diseño, en medio de la pandemia COVID-19, con el fin de:
âą Analizar y proponer acciones concretas que promuevan el mejoramiento de la calidad docente en la DivisiĂłn.
âą Proponer acciones que permitan continuar fortaleciendo los cursos con modalidad a distancia (remotos).
âą Ante un escenario que probablemente demandarĂĄ en el mediano plazo, transitar del modelo remoto a un modelo hĂbrido, proponer acciones a considerar para la transiciĂłn de los cursos.
âą Planear y preparar cursos de nivelaciĂłn de conocimientos, para cuando se transite a la imparticiĂłn de la docencia de manera mixta o presencial, dirigidos a los alumnos que no hayan tenido oportunidad de desarrollar actividades relevantes para su formaciĂłn, como prĂĄcticas de talleres y laboratorios, visitas, o alguna otra actividad relevante
Recommended from our members
Sensitivity of South American tropical forests to an extreme climate anomaly
Funder: A Moore Foundation grant, Royal Society Global Challenges grant (Sensitivity of Tropical Forest Ecosystem Services to Climate Changes), CNPq grants (441282/2016-4, 403764/2012-2 and 558244/2009-2), FAPEAM grants 1600/2006, 465/2010 and PPFOR 147/2015, CNPq grants 473308/2009-6 and 558320/2009-0. European Research Council (ERC Advanced Grant 291585 â âT-FORCESâ), the Gordon and Betty Moore Foundation (#1656 âRAINFORâ, and âMonANPeruâ), the European Unionâs Fifth, Sixth and Seventh Framework Programme (EVK2-CT-1999-00023 â âCARBONSINK-LBAâ, 283080 â âGEOCARBONâ, 282664 â âAMAZALERT), the Natural Environment Research Council (NE/ D005590/1 â âTROBITâ, NE/F005806/1 â âAMAZONICAâ, E/M0022021/1 - âPPFORâ), several NERC Urgency and New Investigators Grants, the NERC/State of SĂŁo Paulo Research Foundation (FAPESP) consortium grants âBIO-REDâ (NE/N012542/1), âECOFORâ (NE/K016431/1, 2012/51872-5, 2012/51509-8), âARBOLESâ (NE/S011811/1, FAPESP 2018/15001-6), âSEOSAWâ (NE/P008755/1), âSECOâ (NE/T01279X/1), Brazilian National Research Council (PELD/CNPq 403710/2012-0), the Royal Society (University Research Fellowships and Global challenges Awards) (ICA/R1/180100 - âFORAMAâ), the National Geographic Society, US National Science Foundation (DEB 1754647) and Colombiaâs Colciencias. We thank the National Council for Science and Technology Development of Brazil (CNPq) for support to the Cerrado/Amazonia Transition Long-Term Ecology Project (PELD/441244/2016-5), the PPBio Phytogeography of Amazonia/Cerrado Transition Project (CNPq/PPBio/457602/2012-0), PELD-RAS (CNPq, Process 441659/2016-0), RESFLORA (Process 420254/2018-8), Synergize (Process 442354/2019-3), the Empresa Brasileira de Pesquisa AgropecuĂĄria â Embrapa (SEG: 02.08.06.005.00), the Fundação de Amparo Ă Pesquisa do Estado de SĂŁo Paulo â FAPESP (2012/51509-8 and 2012/51872-5), the GoiĂĄs Research Foundation (FAPEG/PELD: 2017/10267000329) the EcoSpace Project (CNPq 459941/2014-3) and several PVE and Productivity Grants. We also thank the âInvestissement dâAvenirâ program (CEBA, ref. ANR-10LABX-25-01), the SĂŁo Paulo Research Foundation (FAPESP 03/12595-7) and the Sustainable Landscapes Brazil Project (through Brazilian Agricultural Research Corporation (EMBRAPA), the US Forest Service, USAID, and the US Department of State) for supporting plot inventories in the Atlantic Forest sites in Sao Paulo, Brazil. L.E.O.C.A. was supported by CNPq (processes 305054/2016-3 and 442371/2019-5). We thank to the National Council for Technological and Scientific Development (CNPq) for the financial support of the PELD project (441244/2016-5, 441572/2020-0) and FAPEMAT (0346321/2021). NE/B503384/1, NE/N012542/1 - âBIO-REDâ, ERC Advanced Grant 291585 - âT-FORCESâ, NE/F005806/1 - âAMAZONICAâ, NE/N004655/1 - âTREMORâ, NERC New Investigators Awards, the Gordon and Betty Moore Foundation (âRAINFORâ, âMonANPeruâ), ERC Starter Grant 758873 -âTreeMortâ, EU Framework 6, a Royal Society University Research Fellowship, and a Leverhulme Trust Research Fellowship.The tropical forest carbon sink is known to be drought sensitive, but it is unclear which forests are the most vulnerable to extreme events. Forests with hotter and drier baseline conditions may be protected by prior adaptation, or more vulnerable because they operate closer to physiological limits. Here we report that forests in drier South American climates experienced the greatest impacts of the 2015â2016 El Niño, indicating greater vulnerability to extreme temperatures and drought. The long-term, ground-measured tree-by-tree responses of 123 forest plots across tropical South America show that the biomass carbon sink ceased during the event with carbon balance becoming indistinguishable from zero (â0.02 ± 0.37 Mg C haâ1 per year). However, intact tropical South American forests overall were no more sensitive to the extreme 2015â2016 El Niño than to previous less intense events, remaining a key defence against climate change as long as they are protected