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Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events

Ecological Processes 2024年第1期13卷 98-107页

作者： Julian Rodríguez-Souilla Jimena E.Chaves mar.a vanessa lencinas Juan Manuel Cellini Fidel A.Roig Pablo L.Peri Guillermo martinez Pastur Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) Laboratorio de Investigaciones en Maderas (LIMAD) Universidad Nacional de la Plata (UNLP) Instituto Argentino de Nivología Glaciología y Ciencias Ambientales (IAN-IGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Nacional de Tecnología Agropecuaria (INTA) Universidad Nacional de la Patagonia Austral (UNPA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )

Background Forest ecosystems undergo significant transformations due to harvesting and climate fluctuations, emphasizing the critical role of seeding in natural regeneration and long-term structural preservation. Climate change further amplifies these dynamics, affecting phenology across species and regions. In Tierra del Fuego(Argentina), Nothofagus pumilio(lenga) forests represent the most important timber resource, and it is managed through different silvicultural strategies. This species demonstrates notable post-disturbance regeneration, yet seed fall exhibits signifi-cant variability, leading to variations in seed quality(e.g., viability). This study aims to assess fluctuations in N. pumilio seed quality, determine how it varies concerning forest management strategies, annual productivity, and the co-occurrence of climatic phenomena including El Ni?o-Southern Oscillation(ENSO) and the Southern Annular Mode(SAM).Results Viable seeds represented 18.4% of the total, notably higher in unharvested than in managed areas. Con-versely, empty seeds were more prevalent in harvested areas(> 75%). Seed quality exhibited significant differences across silvicultural treatments, except for insect-predated seeds, which had similar proportions across all areas, though dispersed retention showed higher predation. When considering years with varying production levels, high-production years favoured full and viable seeds, particularly in unharvested forests and aggregated retention, while low-production years saw reduced viability across all treatments. Quadratic models revealed that viability increased with seed production, where unharvested forests achieved the highest values. Climate variability influenced seed proportions, where ENSO+/SAM+ promoting more full and viable seeds, while ENSO–/SAM+ favoured non-predated seeds, especially in unharvested *** Seed quality varies among treatments and years with different levels of seeding. Variations in seed qual-ity, l

关键词： Forest management Seeding Climate change Extreme event Patagonia

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Forage offering and seasonal intake comparisons to evaluate European rabbit threat in Nothofagus forests of southern Patagonia

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Ecological Processes 2022年第1期11卷 604-617页

作者： Alejandro Huertas Herrera Mónica Toro‑Manríquez Laura Borrelli mar.a vanessa lencinas Guillermo martínez Pastur Centro de Investigación en Ecosistemas de la Patagonia(CIEP) Camino Baguales s/n Km 4CoyhaiqueChile Ulterarius Consultores Ambientales y Científicos Ltda. Ignacio Serrano 420CoyhaiqueChile Instituto Nacional de Tecnología Agropecuaria(INTA) EEA BarilocheModesta Victoria 44508400 San Carlos de BarilocheRío NegroArgentina Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas(CADIC)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina.

Background:The European rabbit(Oryctolagus cuniculus L.1758)was introduced into different regions of the world,generating significant trade‑offs that critically impacted native ***,we evaluate the rabbit’s forage intakes in three vegetation types(forests,shrublands,and grasslands)along the four seasons in a temperate forest landscape in Southern Patagonia and discuss the potential threats over native *** formulated the following questions:(i)what is the forage offer at each vegetation type?(ii)what is the rabbit’s forage intake and how it varied across the seasons along the year?and(iii)which vegetation types and plant life forms were more used according to the rabbit’s forage intakes?Methods:We censused understory vegetation to characterize the forage offer at each vegetation type and determined seasonal dietary intakes using microhistological analysis of *** plant species identified in the field were grouped according to life form classes(tree regeneration,shrubs,forbs,graminoids,orchids,ferns,bryophytes,and hemiparasites).Data were analysed through uni‑and multi‑variate analyses,determining relationships between forage offer and the rabbit’s forage ***:Forage intakes revealed changes in plant life form consumption across vegetation types,where intake pressure was considerably different for tree regeneration(p=0.001),graminoids(p=0.001),and hemiparasites(p=0.001).Besides,significant changes in consumption among seasons were detected for shrubs(p=0.001),ferns(p=0.030),and hemiparasites(p=0.002).Although many species play an important role in the rabbit’s forage intake networks(e.g.,Chiliotrichum diffusum,Holcus lanatus),the strongest intake linkages were found in exotic grasses(e.g.,Poa pratensis and Festuca sp.),native hemiparasites(e.g.,Misodendrum sp.),native shrubs(e.g.,Empetrum rubrum),and native trees(e.g.,Nothofagus sp.).The summer and autumn seasons presented higher intake compared to the winter and spring seasons.F

关键词： Forest ecology Oryctolagus cuniculus Plant-animal interaction Vegetation type Herbivory Habitat use

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Improving the knowledge of plant potential biodiversity-ecosystem services links using maps at the regional level in Southern Patagonia

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Ecological Processes 2021年第1期10卷 709-734页

作者： Yamina Micaela Rosas Pablo L.Peri mar.a vanessa lencinas Romina Lasagno Guillermo J.martínez Pastur Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas(CADIC)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina. Instituto Nacional de Tecnología Agropecuaria(INTA) Universidad Nacional de la Patagonia Austral(UNPA)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)CC 3329400 Río GallegosSanta CruzArgentina. Instituto Nacional de Tecnología Agropecuaria(INTA) CC 3329400 Río GallegosSanta CruzArgentina.

Background:Biodiversity supports multiple ecosystem services,whereas species loss endangers the provision of many services and affects ecosystem resilience and resistance *** increase of remote sensing techniques allows to estimate biodiversity and ecosystem services supply at the landscape level in areas with low available data(*** Patagonia).This paper evaluates the potential biodiversity and how it links with ecosystem services,based on vascular plant species across eight ecological *** also evaluated the habitat plant requirements and their relation with natural gradients.A total of 977 plots were used to develop habitat suitability maps based on an environmental niche factor analysis of 15 more important indicator species for each ecological area(n=53 species)using 40 explanatory ***,these maps were combined into a single potential biodiversity map,which was linked with environmental variables and ecosystem services *** comparisons,data were extracted and compared through analyses of ***:The plant habitat requirements varied greatly among the different ecological areas,and it was possible to define groups according to its specialization and marginality *** potential biodiversity map allowed us to detect coldspots in the western mountains and hotspots in southern and eastern *** biodiversity was associated to higher temperatures and normalized difference vegetation index,while lower biodiversity was related to elevation and *** biodiversity was closely associated with supporting and provisioning ecosystem services in shrublands and grasslands in the humid steppe,while the lowest values were related to cultural ecosystem services in Nothofagus ***:The present study showed that plant species present remar.able differences in spatial distributions and ecological requirements,being a useful proxy for potential biodiversity *** biodiversity values

关键词： Habitat suitability Environmental variables Ecosystem functions Conservation management Ecosystem services Landscape modelling

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重症监护室护士限制治疗努力的能力:整合性综述

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International Journal of Nursing Sciences 2024年第1期11卷 143-154,I0003页

作者： Elvia R.Lopez-Panza vanessa C.Pacheco-Roys Kelly J.Fernandez-Ahumada Diana C.Díaz-Mass mar.a Y.Exposito-Concepcion Elizabeth Villarreal-Cantillo Cesar I.Aviles Gonzalez Nursing Department Universidad del NorteBarranquillaColombia Nursing Program Faculty of Health SciencesUniversidad Popular del CesarValleduparColombia Clínica Valledupar ValleduparColombia Hospital Universidad del Norte SoledadColombia Department of Medical Sciences and Public Health University of CagliariCittadella Universitaria di MonserratoCagliariItaly

目的在重症监护病房(IntensiveCareUnit,ICU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,LTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方法对... 详细信息

目的在重症监护病房(IntensiveCareUnit,ICU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,LTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方法对2010年--2023年发表的文献进行综述。系统检索了5个数据库:Medline、Wiley Online Library、SciELO、ScienceDirect和Web of Science。使用关键评估项目工具西班牙语版(Critical Appraisal Skills Programme in Spanish,CASPe)作为评判性阅读工具。使用牛津循证医学中心(Center for Evidence-Based Medicine.,CEBM)评估工具确定证据级别和推荐强度。结果共纳入25篇文献。ICU护士LTE护理的能力包括对患者的直接护理、以家庭为中心的护理以及护士在团队中的作用。该综述确定了3个类别的能力:作为患者、家庭与跨学科团队之间维护者的能力,在LTE方面的决策能力,在患者生命末期治疗和护理干预的能力。结论ICU护士在LTE方面需要具备相应的能力,这对患者的生活质量死亡尊严以及患者家庭应对悲伤的全面支持至关重要。

关键词：重症监护家庭支持重症监护病房护士的作用安宁疗护专业能力

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The influence of canopy-layer composition on understory plant diversity in southern temperate forests

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Forest Ecosystems 2017年第2期4卷 154-166页

作者： Luciana Mestre Monica Toro-Manriquez Rosina Soler Alejandro Huertas-Herrera Guillermo martinez-Pastur mar.a vanessa lencinas National Scientific and Technical Research Council (CONICET) Austral Center for Scientific Research (CADIC-CONICET) Houssay 200 9410 Ushuaia Tierradel Fuego Argentina

Background： Understory plants represents the largest component of biodiversity in most forest ecosystems and plays a key role in forest *** their importance, the influence of overstory-layer composition on understory plant diversity is relatively poorly understood within deciduous-evergreen broadleaved mixed *** aim of this work was to evaluate how tree overstory-layer composition influences on understory-layer diversity in three forest types（monospecific deciduous Nothofagus pumilio（Np）, monospecific evergreen Nothofagus betuloides（Nb）, and mixed ***（M） forests）, comparing also between two geographical locations（coast and mountain） to estimate differences at landscape ***： We recorded 46 plant species： 4 ferns, 12 monocots, and 30 ***-layer composition influences the herb-layer structure and diversity in two different ways： while mixed forests have greater similarity to evergreen forests in the understory structural features, deciduous and mixed were similar in terms of the specific composition of plant *** pure stands were the most diverse, meanwhile evergreen stands were least *** of exclusive species of mixed forest could represent a transition where evergreen and deciduous communities meet and ***, landscape has a major influence on the structure, diversity and richness of understory vegetation of pure and mixed forests likely associated to the magnitude and frequency of natural disturbances, where mountain forest not only had highest herb-layer diversity but also more exclusive ***： Our study suggests that mixed Nothofagus forest supports coexistence of both pure deciduous and pure evergreen understory plant species and different assemblages in coastal and mountain *** the mixture of canopy patch types within mixed stands will be important for conserving the natural patterns of understory plant composition in southern beech mixe

关键词： Landscape Understory communities Understory structure Forest structure Nothofagus Conservation

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Flowering and seeding patterns in pure and mixed Nothofagus forests in Southern Patagonia

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Ecological Processes 2016年第1期5卷 261-272页

作者： Monica Toro Manriquez Luciana Mestre mar.a vanessa lencinas Alvaro Promis Guillermo martinez Pastur Rosina Soler National Scientific and Technical Research Council(CONICET) Austral Center for Scientific Research(CADIC-CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina Department of Silviculture and Nature Conservation University of ChileAv.Santa Rosa 113159206 SantiagoLa PintanaChile

Introduction:Variation in reproductive phenology among species is an important mechanism for maintaining species *** mixed forests,the impact of limiting(biotic and abiotic)factors on tree reproductive success regulates the maintenance of species in balanced proportions or the conversion towards monospecific *** study offer a significant first approach to the reproductive phenology of mixed forests,assessing flowering,seeding and loss factors on reproductive success in three forest types(pure deciduous Nothofagus pumilio(Np),evergreen Nothofagus betuloides(Nb)and mixed(M)forests),comparing also between two geographical locations(coast and mountain),during one growing ***:Flowering falling started early in *** fall occurred first and more concentrated in Np,while in Nb,it was progressive during *** in M combined both patterns,but with better reproductive performance of both *** production was greater in Nb(42,900,000 ha^(−1))than in Np(710,000 ha^(−1)),while M presented intermediate values(31,900,000 ha^(−1)).Abortion was greatest in Np(19% of female flowers and 10% of immature fruits),while fruit predation was low(7-9%)in all forest *** seed was the main loss factor,but with low net values for each species in *** geographical location,sea proximity generated a quick starting of the growing season in coast compared to mountain ***,we detected forest types×location interactions in flowering and seeding patterns(*** male flower production and in empty and viable seeds),with differences in species response according to ***:Both deciduous and evergreen species have reproductive advantages in mixed compared to pure ***,mixed were more similar to pure evergreen forests in their reproductive traits and the incidence of the limiting *** study of only one growing season does not allow us to conclude whether mixed forests are stable communities,but we cont

关键词： Broadleaved Mixed forest Geographical location Leaf habit Reproductive phenology Seed quality

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Suitable conditions for natural regeneration in variable retention harvesting of southern Patagonian Nothofagus pumilio forests

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Ecological Processes 2019年第1期8卷 240-251页

作者： Mónica D.R.Toro Manríquez Juan M.Cellini mar.a V.lencinas Pablo L.Peri Karen A.Peña Rojas Guillermo J.martínez Pastur Centro Austral de Investigaciones Científicas(CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 200(9410)UshuaiaTierra del FuegoArgentina Laboratorio de Investigaciones en Maderas(LIMAD) Universidad Nacional de la Plata(UNLP)Diagonal 113 n°469(1904)La PlataBuenos AiresArgentina Instituto Nacional de Tecnología Agropecuaria(INTA) Universidad Nacional de la Patagonia Austral(UNPA)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)cc 332(9400)Río GallegosSanta CruzArgentina Departamento de Silvicultura y Conservación de la Naturaleza Facultad de Ciencias Forestales y de Conservación de la NaturalezaUniversidad de Chilecc 9206SantiagoChile.

Background:Variable retention(aggregated and dispersed retention)harvesting proposed for Nothofagus pumilio was designed for timber purposes and biodiversity *** by opening canopy generates different microenvironments and creates contrasting conditions for seedling establishment,growth,and eco-physiology performance due to synergies(positives or negatives)with biotic and abiotic *** study evaluated the regeneration in different microenvironment conditions within managed stands during 5 years after *** forest structure after harvesting and different microenvironments were characterized in managed stands,where 105 regeneration plots were measured(3 stands×7 microenvironments×5 replicas).We characterized the seedling bank,as well as growth and ecophysiology performance of the *** and multivariate analyses were conducted for the ***:Microenvironments offered different environmental conditions for natural regeneration(soil moisture and light availability).Seedling under debris and dicot plants showed better eco-physiological performance,establishment,and growth than plants growing under monocots or located in the dispersed retention without the protection of other understory *** most unfavorable microenvironment conditions were high canopy cover of remnant trees(inside the aggregates or close to trees in the dispersed retention)and heavily impacted areas(skidder extraction roads).Conclusions:Favorable microenvironments in the harvested areas will improve the natural recruitment,growth,and eco-physiology performance of the natural regeneration after *** is necessary to develop new silvicultural practices that decrease the unfavorable microenvironments(e.g.,road density or excessive woody accumulation),to assure the success of the proposed silvicultural method.

关键词： Aggregated retention Dispersed retention Microenvironments Environmental variables Biometric values Biomass allocation Eco-physiology

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Carbon pool dynamics after variable retention harvesting in Nothofagus pumilio forests of Tierra del Fuego

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Ecological Processes 2023年第1期12卷 64-82页

作者： Jimena E.Chaves marie-Claire Aravena Acuña Julián Rodríguez-Souilla Juan M.Cellini Nolan J.Rappa mar.a V.lencinas Pablo L.Peri Guillermo J.martínez Pastur Centro Austral de Investigaciones Científicas(CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 200(9410)UshuaiaTierra del FuegoArgentina Laboratorio de Investigaciones en Maderas(LIMAD) Universidad Nacional de la Plata(UNLP)Diagonal 113469(1900)La PlataBuenos AiresArgentina Nature Conservation&Landscape Ecology University of FreiburgTennenbacherstrasse 479106 FreiburgGermany Instituto Nacional de Tecnología Agropecuaria(INTA) Universidad Nacional de la Patagonia Austral(UNPA)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Cc 332(9400)Río GallegosSanta CruzArgentina

Background It is necessary to determine the implications for managing forest stands using variable retention harvesting for maintaining carbon and for calculating the effects of different harvesting practices on above-and below-ground carbon balance in forest *** this context,forest carbon management has gained more attention among managers and policy-makers during recent *** aim of this study was to determine carbon pool dynamics in different forest ecosystem components after variable retention harvesting(VRH)to characterize the ecological stability and quantify the recovery rate through the years-after-harvesting(YAH).Methods Carbon pool compartmentalization of 14 different components was determined in 60 harvested and primary unmanaged forests during the first 18 YAH in Tierra del Fuego(Argentina).We compared them using uni-and multi-variate methods,relativizing the outputs with primary unmanaged *** We determined the effectiveness to retain carbon components in post-harvested stands under different retention strategies(aggregated ***).The balance among carbon pool components changed between managed and unmanaged stands across the YAH,and was directly related to the impact *** retention improved the ecological stability of the harvested areas,where the below-ground components were more stable than the above-ground *** recovery rate was directly related to the post-harvesting natural dynamics of the *** studied period was not enough to fully recover the C levels of primary unmanaged for-ests,but VRH showed advantages to increase the C pools in the managed *** Promoting VRH can improve sustainable forestry at the landscape level and in the long term,generating positive synergies with biodiversity and the provision of ecosystem *** study provides important new insights into forest carbon management,in particular to setting standards in carbon projects and sets the ground

关键词： Carbon reservoir Temperate forest Ecological stability Recovery rate Forest carbon management

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Arthrospira maxima(Spirulina)prevents endoplasmic reticulum stress in the kidney through its C-phycocyanin

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2021年第7期22卷 603-608页

作者： Placido ROJAS-FRANCO mar.arita FRANCO-COLÍN vanessa BLAS-VALDIVIA mar.a Estela MELENDEZ-CAmarGO Edgar CANO-EUROPA Laboratorio de Metabolismo I Departamento de FisiologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico City 07738Mexico Laboratorio de Neurobiología Departamento de FisiologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico City 07738Mexico Laboratorio de Toxicologia Hepática y Renal Departamento de FarmaciaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico City 07738Mexico

Arthrospira maxima(Spirulina)is a cyanobacterium which is considered a nutraceutical because it has antioxidant,anti-inflammatory,and cytoprotective properties in different renal disease models(RodriguezSánchez et al... 详细信息

关键词： al. protective reticulum

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重症监护室护士限制治疗努力的能力:整合性综述（英文）

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International Journal of Nursing Sciences 2024年第1期 143-154+160页

作者： Elvia R.López-Panza vanessa C.Pacheco-Roys Kelly J.Fernández-Ahumada Diana C.Díaz-Mass mar.a Y.Expósito-Concepción Elizabeth Villarreal-Cantillo Cesar I.Aviles Gonzalez Nursing Department Universidad del Norte Nursing Program Faculty of Health Sciences Universidad Popular del César Clínica Valledupar Hospital Universidad del Norte Department of Medical Sciences and Public Health University of Cagliari Cittadella Universitaria di Monserrato

目的在重症监护病房(Intensive Care Unit,ICU),护士难免会遇到需要限制治疗努力(limiting therapeutic effort,LTE)的患者,尽管多数护十还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方... 详细信息

目的在重症监护病房(Intensive Care Unit,ICU),护士难免会遇到需要限制治疗努力(limiting therapeutic effort,LTE)的患者,尽管多数护十还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方法对2010年—2023年发表的文献进行综述。系统检索了5个数据库:Medline、Wiley Online Library SciELO、ScienceDirect和Web of Science。使用关键评估项目工具西班牙语版(Critical Appraisal Skills Programme in Spanish,CASPe)作为评判性阅读工具。使用牛津循证医学中心(Center for Evidence-Based Medicine,CEBM)评估工具确定证据级别和推荐强度。结果共纳入25篇文献。ICU护士LTE护理的能力包括对患者的直接护理、以家庭为中心的护理以及护士在团队中的作用。该综述确定了3个类别的能力:作为患者、家庭与跨学科团队之间维护者的能力,在LTE方面的决策能力,在患者生命末期治疗和护理干预的能力。结论 ICU护十在LTE方面需要具备相应的能力,这对患者的生活质量、死亡尊严以及患者家庭应对悲伤的全面支持至关重要。

关键词：重症监护家庭支持重症监护病房护士的作用安宁疗护专业能力

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