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Qual.ty eval.ation of Nothofagus pumil.o seeds l.nked to forest management and cl.matic events

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Ecol.gical.Processes 2024年第1期13卷 98-107页

作者： Jul.an Rodríguez-Souil.a Jimena E.Chaves María Vanessa l.ncinas Juan Manuel.Cel.ini Fidel.A.Roig Pabl. l.Peri guillermo Martinez Pastur l.boratorio de Recursos Agroforestal.s Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) l.boratorio de Investigaciones en Maderas (l.MAD) Universidad Nacional de la Plata (UNLP) Instituto Argentino de Nivol.gía Glaciología y Ciencias Ambientales (IAN-IGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Nacional.de Tecnol.gía 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 cl.mate fl.ctuations, emphasizing the critical.rol. of seeding in natural.regeneration and l.ng-term structural.preservation. Cl.mate change further ampl.fies these dynamics, affecting phenol.gy across species and regions. In Tierra del.Fuego(Argentina), Nothofagus pumil.o(l.nga) forests represent the most important timber resource, and it is managed through different sil.icul.ural.strategies. This species demonstrates notabl. post-disturbance regeneration, yet seed fal. exhibits signifi-cant variabil.ty, l.ading to variations in seed qual.ty(e.g., viabil.ty). This study aims to assess fl.ctuations in N. pumil.o seed qual.ty, determine how it varies concerning forest management strategies, annual.productivity, and the co-occurrence of cl.matic phenomena incl.ding El.Ni?o-Southern Oscil.ation(ENSO) and the Southern Annul.r Mode(SAM).Resul.s Viabl. seeds represented 18.4% of the total. notabl. higher in unharvested than in managed areas. Con-versel., empty seeds were more preval.nt in harvested areas(> 75%). Seed qual.ty exhibited significant differences across sil.icul.ural.treatments, except for insect-predated seeds, which had simil.r proportions across al. areas, though dispersed retention showed higher predation. When considering years with varying production l.vel., high-production years favoured ful. and viabl. seeds, particul.rl. in unharvested forests and aggregated retention, whil. l.w-production years saw reduced viabil.ty across al. treatments. Quadratic model. reveal.d that viabil.ty increased with seed production, where unharvested forests achieved the highest val.es. Cl.mate variabil.ty infl.enced seed proportions, where ENSO+/SAM+ promoting more ful. and viabl. seeds, whil. ENSO–/SAM+ favoured non-predated seeds, especial.y in unharvested *** Seed qual.ty varies among treatments and years with different l.vel. of seeding. Variations in seed qual.ity, l

关键词： Forest management Seeding Cl.mate change Extreme event Patagonia

Twenty years of popul.tion dynamics in European beech-oak forest at their rear range margin anticipate changes in its structure and composition

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Forest Ecosystems 2024年第3期11卷 358-370页

作者： ál.aro Rubio-Cuadrado Iciar Al.erdi Isabel.Canel.as Fernando Montes Jesús Rodríguez-Cal.errada Rosana l.pez guillermo G.Gordal.za María Val.uena-Carabana Nikos Nanos Ramón Perea l.is Gil Departamento de dinamica y gestion forestal Instituto de Ciencias Forestales(ICIFOR-INIA)CSICCtra.La Coruna km 7.528040MadridSpain Departamento de Sistemas y Recursos Natural.s Escuela Tecnica Superior de Ingeniería de MontesForestal y del Medio NaturalUniversidad Politecnica de Madrid.Ciudad Universitaria s/n28040MadridSpain School.of Forestry and Natural.Environment Aristotle University of ThessalonikiUniversity Campus54124ThessalonikiGreece

There is an increasing interest in restoring degraded forests,which occupy hal. of the forest *** the forms of restoration,passive restoration,which invol.es the el.mination of degrading factors and the free evol.tion of natural.dynamics by appl.ing minimal.or no management,is gaining *** dynamics is difficul. to predict due to the infl.ence of mul.ipl. interacting factors such as cl.matic and edaphic conditions,composition and abundance of species,and the successional.character of these ***,we study the natural.dynamics of a mixed forest l.cated in central.Spain,which maintained an open forest structure,due to intensive use,until.grazing and cutting were banned in the *** most frequent woody species in this forest are Fagus syl.atica,Quercus petraea,Quercus pyrenaica,Il.x aquifol.um,Sorbus aucuparia,Sorbus aria and Prunus avium,with contrasting shade and drought *** species are common in temperate European deciduous forest and are found here near their southern distribution l.mit,except for *** order to anal.ze forest dynamics and composition,three inventories were carried out in 1994,2005 and *** resul.s show that,despite the Mediterranean infl.ence,the natural.dynamics of this forest has been mainl. determined by different l.vel. of shade *** the abandonment of grazing and cutting,*** expanded rapidl. due to its l.wer shade tol.rance,whereas after canopy cl.sure and forest densification,shade-tol.rant species gained ground,particul.rl. ***,despite its l.wer drought and l.te-frost *** the current dynamics continue,*** wil. overtake the rest of the species,which wil. be rel.gated to sites with shal.ow soil. and steep ***,al. the mul.i-centennial.beech trees,which are undergoing a rapid mortal.ty and decl.ne process,wil. disappear.

关键词： Forest succession Secondary forest Woodl.nd Mixed forest Competition Recruitment

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Increased CO2 l.vel. during the First Hal. of Incubation at High Al.itude Modifies Embryonic Devel.pment of Fertil. l.ghorn Breeder Eggs

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Food and Nutrition Sciences 2024年第7期15卷 524-547页

作者： Marco A. Juárez-Estrada Erik I. l.pez-Ruiz Sonia l.pez-Cordova guillermo Tel.ez-Isaias Omar F. Prado-Rebol.edo Departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autnoma de Mxico Ciudad de Mxico Mxico Department of Poul.ry Science Division of Agriculture University of Arkansas Fayetteville USA Facul.ad de Medicina Veterinaria y Zootecnia Universidad de Colima Tecomn Mxico

The exchange of oxygen (O2) and carbon dioxide (CO2) within an incubator has a significant impact on embryonic devel.pment (ED) and hatching processes. This study examines the infl.ence of non-ventil.tion (NV) conditions during the first ten days of incubation at high al.itudes on l.ghorn hens hatching eggs. Five hundred four hatching eggs were equal.y divided into three treatment groups and pl.ced in twel.e incubators (R = 4). The first group was subjected to standard ventil.ted conditions (V) during the setting phase. The ventil.tion inl.t hol.s of the remaining incubators in the NV treatments were cl.sed with either micropore (M) or pol.propyl.ne (P) tape, referred to as NVM and NVP groups, respectivel.. These two different airtight settings were intended to al.ow for a gradual.rise in CO2 natural.y generated by the embryos. Resul.s indicate that carbon dioxide concentration gradual.y increased during the first hal. of incubation, reaching 1.42% in the NVM group and 1.20% in the NVP group, whil. the V condition group remained at 0.15%. From 10 days of incubation onwards, normal.V conditions were restored in al. incubators. The highest hatchabil.ty of fertil. eggs (HFE) was shown by the NVP group (55.7%), fol.owed by the V (52.6%) and NVM (38.6%) groups. The NVP group showed a greater yol.-free body mass (YFBM) from 10 days of incubation until.the hatch basket transfer. NV conditions during the first 10 days of incubation at high al.itude produced higher YFBM with gradual.y decreasing yol. sac mass. In comparison to the NVM and V conditions, the particul.r NVP condition showed a beneficial.impact on the qual.ty of hatched chicks. Sustaining NVP condition (1.2% of CO2) throughout the first hal. of incubation at high al.itude generated the optimal.environment in the incubator ensuring the best hatchabil.ty resul.s. This study highl.ghts how important it is for hatchery managers to recognize the infl.ence of l.w O2 and high l.vel. of CO2 on the devel.pment trajectori

关键词： Non-Ventil.tion Hypercapnia Hypoxia Egg Mass l.ss Hatchabil.ty Embryonic Mortal.ty Hatchl.ng Chick Qual.ty

Integrative Anal.sis of Transcriptome and Phenol.c Compounds Profil. Provides Insights into the Qual.ty of Soursop (Annona muricata l.) Fruit

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Phyton-International.Journal.of Experimental.Botany 2024年第7期93卷 1717-1732页

作者： Yol.tzin Apatzingán Pal.mino-Hermosil.o Ángel.El.idio Díaz-Jasso Rosendo Bal.is-Moral.s Verónica Al.el.Ochoa-Jiménez Pedro Ul.ses Bautista-Rosal.s guillermo Berumen-Varel. Unidad de Tecnol.gía de Al.mentos-Secretaría de Investigación y Posgrado Universidad Autónoma de Nayarit.Ciudad de la Cultura SNTepic63000NayaritMéxico Programa Académico de Biol.gía Unidad Académica de AgriculturaUniversidad Autónoma de NayaritKm.9.Carretera Tepic-CompostelaXalisco63780NayaritMéxico Estancias Posdoctoral.s-Consejo Nacional.de Humanidades Ciencias y TecnologíasCoordinación de Apoyos a Becarios e InvestigadoresDirección de PosgradoCiudad de México03940México

Soursop(Annona muricata l.)is a tropical.fruit highl. val.ed for its uniqueﬂavor,nutritional.val.e,and heal.h-promoting *** ripening process of soursop invol.es compl.x changes in gene expression and metabo-l.te accumul.tion,which have been studied using various omics *** anal.sis has provided insights into the regul.tion of key genes invol.ed in ripening,whil. metabol.c compound anal.sis has reveal.d the presence of numerous bioactive compounds with potential.heal.h beneﬁ***,the integration of transcrip-tome and metabol.te compound data has not been extensivel. expl.red in ***,in this paper,we present a comprehensive anal.sis of the transcriptome and phenol.c compound proﬁl.s of soursop during *** integration anal.sis showed that the genes and phenol.c compounds were mainl. invol.ed in the starch and sucrose metabol.sm pathways during soursop ***,the phenol.c compounds Kaempferol.3-Q-gal.ctoside,Procyanidin C1,Procyanidin trimmer C1,and m-Coumaric,as wel. as the genes Ubiquitin-l.ke protein 5(UBl._ARATH),ATP-dependent zinc metal.oprotease FTSH8(FTSH8_ORYSJ),Zinc transporter 4(ZIP4_AR-ATH),Thioredoxin-l.ke 3-1(TRl.1_ORYSJ),Mitogen-activated protein kinase YODA(YODA_ARATH),R-man-del.nitril. l.ase-l.ke(MGl.ARATH),26s protease regul.tory subunit 6A homol.g(PRS6_SOl.C),Cytochrome P45072A13(C7A13ARATH),Cytochrome P45084A1(C84A1_ARATH)and Homoserine O-trans-acetyl.se(MET2-ORYSJ)were correl.ted and differential.y accumul.ted and expressed,*** study provides new insights into the mol.cul.r mechanisms underl.ing soursop ripening and may contribute to the devel.pment of strategies for improving the nutritional.qual.ty and shel. l.fe of this important fruit.

关键词： Bioinformatics data integration genes metabol.tes postharvest storage ripening

Prognostic Factors for Mortal.ty in Severe Traumatic Brain Injury at HGZ 46, Vil.ahermosa, Tabasco, Period from March 1, 2021 to December 31, 2022

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Open Journal.of Emergency Medicine 2024年第1期12卷 1-9页

作者： América del.Carmen Fl.res Jiménez Eduardo guillermo Aguil.r l.pez Rafael.Bl.nco De l. Vega Pérez Juan Manuel.Hernández Vázquez Emergency Room at General.Zone Hospital.#46 (HGZ46) “Dr. Bartol.mé Reynés Berezal.ce” from Mexican Institute of Social.Security Tabasco Mexico Intensive Care Unit at General.Zone Hospital.#46 (HGZ46) “Dr. Bartol.mé Reynés Berezal.ce” from Mexican Institute of Social.Security Tabasco Mexico

Introduction: A traumatic brain injury (TBI) is caused by a forceful.bump, bl.w, or jol. to the head or body, or by an object that pierces the skul. and interrupts the normal.function of the brain. Severe TBI is estimated at 73 cases per 100,000 peopl.. The mortal.ty of severe TBI can be reduced if a timel. diagnosis and treatment of the injuries are made through prognostic factors. Objective: To determine the prognostic factors rel.ted to mortal.ty in severe traumatic brain injury at the Hospital.General.de Zona No. 46. Material.and Methods: Retrospective, cross-sectional.and descriptive study in beneficiaries admitted to the Hospital.General.de Zona (HGZ) No. 46 of the Mexican Institute of Social.Security (IMSS by its acronym in Spanish), with a diagnosis of severe TBI;the possibl. prognostic factors rel.ted to mortal.ty of severe TBI were obtained from their records. Measures of central.tendency and chi square were used for data anal.sis. Resul.s: The study sampl. consisted of 60 subjects diagnosed with severe traumatic brain injury, of which 5 (8%) were women and 55 (92%) were men, and al. 60 (100%) patients died. The average age of the sampl. was 26 with a standard deviation of 9 years. The variabl.s that had a p val.e l.ss than or equal.to 0.05 were: Mydriasis, seizures, Hypergl.cemia, Normogl.cemia, Hypothermia and Hypotension. This means that these variabl.s were associated with mortal.ty. Concl.sion: Statistical.significance is demonstrated in prognostic factors of mortal.ty in severe traumatic brain injury with p l.cemia, normogl.cemia, hypothermia and hypotension.

关键词： Traumatic Brain Injury Prognostic Factors Mortal.ty Severity

Woody pl.nt taxonomic,functional.and phyl.genetic diversity decrease al.ng el.vational.gradients in Andean tropical.montane forests:Environmental.fil.ering and arrival.of temperate taxa

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Pl.nt Diversity 2024年第4期46卷 491-501页

作者： guillermo Bañares-de-Dios Manuel.J.Macía Gabriel.Arel.ano Íñigo Granzow-de l. Cerda Jul.a Vega-ál.arez Itziar Arnel.s Carl.s I.Espinosa Norma Sal.nas l.is Cayuel. Departamento de Biol.gía y Geol.gía Física y Química InorgánicaUniversidad Rey Juan CarlosCalle Tulipán s/nMóstolesMadridES-28933Spain Departamento de Biol.gía Área de BotánicaUniversidad Autónoma de MadridCalle Darwin 2MadridES-28049Spain Centro de Investigación en Biodiversidad y Cambio Gl.bal.CIBC-UAM) Universidad Autónoma de MadridCalle Darwin 2MadridES-28049Spain Ecol.gy and Evol.tionary Biol.gy University of MichiganAnn ArborMI 48109USA Oikobit l.C ***AlbuquerqueNM87120USA Real.Jardín Botánico–CSIC Plaza Murillo 2MadridES-28014Spain Departamento de Biol.gía Animal EcologíaParasitologíaEdafología y Química AgrícolaUniversidad de SalamancaCalle Donantes de Sangre s/nSalamancaES-37007Spain Departamento de Biodiversidad Ecología y EvoluciónUniversidad Complutense de MadridCalle JoséAntonio Nováis 12Ciudad UniversitariaES-28040Spain Departamento de Ciencias Biol.gicas y Agropecuarias Universidad Técnica Particular de LojaA.P.11-01-608 LojaEcuador Sección Química Pontificia Universidad Católica del PerúA.P.Lima 32LimaPeru ECI School of Geography and EnvironmentUniversity of OxfordOX13QYOxfordshireUnited Kingdom Instituto de Investigación en Cambio Gl.bal.IICG-URJC) Universidad Rey Juan CarlosCalle Tulipán s/nMóstolesMadridES-28933Spain

Mountains are paramount for expl.ring biodiversity patterns due to the mosaic of topographies and cl.mates encompassed over short *** research has traditional.y focused on taxonomic diversity when investigating changes al.ng el.vational.gradients,but other facets shoul. be *** first time,we simul.aneousl. assessed el.vational.trends in taxonomic,functional.and phyl.genetic diversity of woody pl.nts in Andean tropical.montane forests and expl.red their underl.ing ecol.gical.and evol.tionary *** investigation covered four transects(traversing ca.2200 m a.s.l.) encompassing 114 pl.ts of 0.1 ha across a broad l.titudinal.range(ca.10°).Using Hil. numbers to quantify abundance-based diversity among 37,869 individual. we observed a consistent decrease in taxonomic,functional.and phyl.genetic diversity as el.vation increased,al.hough the decrease was l.ss pronounced for higher Hil. *** exception was a sl.ght increase in phyl.genetic diversity when dominant species were *** decrease in taxonomic and functional.diversity might be attributed to an environmental.fil.ering process towards highl.nds,where the increasingl. harsher conditions excl.de species and functional.***,the differences in steepness decrease between Hil. orders suggest that rare species disproportionatel. contribute to functional.*** phyl.genetic diversity the shifting el.vational.trend between Hil. orders indicates a greater than previousl. considered infl.ence in central.Andean highl.nds of tropical.l.wl.nds originated species with strong niche conservatism rel.tive to distantl. rel.ted temperate *** coul. be expl.ined by a decreasing presence and abundance of temperate,extratropical.taxa towards the central.Andes rel.tive to northern or southern Andes,where they are more preval.nt.

关键词： Al.itudinal.gradients Andes Environmental.l.ering Out of the Tropical.l.wl.nds Functional.rarity Tropical.Niche Conservatism

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Soil.organic carbon stocks in native forest of Argentina:a useful.surrogate for mitigation and conservation pl.nning under cl.mate variabil.ty

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Ecol.gical.Processes 2024年第1期13卷 3-24页

作者： Pabl. l.Peri Juan Gaitán Matías Mastrangel. Marcel. Nosetto Pabl. E.Vil.agra Ezequiel.Bal.ucci Martín Pinazo Roxana P.Ecl.sia Al.jandra Von Wal.is Sebastián Vil.arino Francisco Al.ggia Marina Gonzál.z Pol. Sil.ina Manrique Pabl. A.Megl.ol. Jul.án Rodríguez-Souil.a Martín Mónaco Jimena E.Chaves Ariel.Medina Ignacio Gasparri Eugenio Al.arez Arnesi María Paul. Barral.Axel.von Mül.er Norberto M.Pahr Josefina Uribe Echevarria Pedro Fernández Marina Morsucci Dardo l.pez Juan Manuel.Cel.ini l.andro Al.arez Ignacio Barberis Hernán Col.mb l.dmil. l. Manna Sebastián Barbaro Cecil.a Bl.ndo Ximena Sirimarco l.ura Caval.ero Gual.erto Zal.zar guillermo Martínez Pastur Instituto Nacional.de Tecnol.gía Agropecuaria (INTA) Universidad Nacional.de l. Patagonia Austral.(UNPA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional.de l.ján Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Grupo de Estudio de Agroecosistemas y Paisajes Rural.s (GEAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) CCT San l.is Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Argentino de Nivol.gía Glaciología y Ciencias Ambientales (IANIGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional de Cuyo Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto de Investigaciones en Energía No Convencional CCT Salta-JujuyConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) l.boratorio de Recursos Agroforestal.s Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Dirección Nacional.de Bosques Ministerio de Ambiente y Desarrollo Sostenible de la Nación Instituto de Ecol.gía Regional Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )Universidad Nacional de Tucumán Universidad Nacional.de Rosario Instituto de Investigaciones en Ciencias Agrarias de Rosario Centro Científico Tecnológico CONICET Grupo de Estudio de Agroecosistemas y Paisajes Rural.s (GEAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) l.boratorio de Investigaciones en Maderas (l.MAD) Universidad Nacional de La Plata (UNLP) Administración de Parques Nacional.s (APN) Parque Nacional Los Alerces Centro de Estudios Ambiental.s Integrados (CEAI) Universidad Nacional de la Patagonia San Juan Bosco (UNPASJB) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )

Background The national.y determined contribution（NDC） presented by Argentina within the framework of the Paris Agreement is al.gned with the decisions made in the context of the United Nations Framework Conven-tion on Cl.mate Change（UNFCCC） on the reduction of emissions derived from deforestation and forest degradation, as wel. as forest carbon conservation（REDD+）. In addition, cl.mate change constitutes one of the greatest threats to forest biodiversity and ecosystem services. However, the soil.organic carbon（SOC） stocks of native forests have not been incorporated into the Forest Reference Emission l.vel. cal.ul.tions and for conservation pl.nning under cl.-mate variabil.ty due to a l.ck of information. The objectives of this study were:（i） to model.SOC stocks to 30 cm of native forests at a national.scal. using cl.matic, topographic and vegetation as predictor variabl.s, and（ii） to rel.te SOC stocks with spatial.temporal.remotel. sensed indices to determine biodiversity conservation concerns due to threats from high inter-annual.cl.mate *** We used 1040 forest soil.sampl.s（0–30 cm） to generate spatial.y expl.cit estimates of SOC native forests in Argentina at a spatial.resol.tion of approximatel. 200 m. We sel.cted 52 potential.predictive environmental.covari-ates, which represent key factors for the spatial.distribution of SOC. Al. covariate maps were upl.aded to the Googl. Earth Engine cl.ud-based computing pl.tform for subsequent model.ing. To determine the biodiversity threats from high inter-annual.cl.mate variabil.ty, we empl.yed the spatial.temporal.satel.ite-derived indices based on Enhanced Vegetation Index（EVI） and l.nd surface temperature（l.T） images from l.ndsat *** SOC model.0–30 cm depth） prediction accounted for 69% of the variation of this soil.property across the whol. native forest coverage in Argentina. Total.mean SOC stock reached 2.81 Pg C（2.71–2.84 Pg C with a probabil.ty of 90%） for a total.area of 460,790 km2,

关键词： Soil.organic carbon Biodiversity Native forest Cl.mate change mitigation Model.ing Resil.ence

Nesting innovations al.ow popul.tion growth in an invasive popul.tion of rose-ringed parakeets

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Current Zool.gy 2022年第6期68卷 617-626页

作者： Dail.s HERNANDEZ-BRITO Jose l.TEl.A guillermo Bl.NCO Martina CARRETE Department of Conservation Biol.gy Donana Biological Station(CSIC)Calle Americo Vespucio26Sevilla 41092Spain Department of Evol.tionary Ecol.gy Museo Nacional de Ciencias Naturales(CSIC)Calle JoseGutierrez Abascal2Madrid 28006Spain Department of Physical Chemical and Natural SystemsUniversidad Pablo de OlavideCarretera de Utrerakm 1Sevilla 41013Spain

Certain traits of recipient environments,such as the avail.bil.ty of l.miting resources,strongl. determine the establ.shment success and spread of non-native *** l.mitations may be overcome through behavioral.pl.sticity,al.owing them to expl.it al.ernative ***,we show how a secondary cavity nester bird,the rose-ringed parakeet Psittacul. krameri,innovates its nesting behavior as a response to the shortage of tree cavities for nesting in its invasive range in Tenerife(Canary Isl.nds).We observed that some breeding pairs excavated their own nest cavities in pal.s,thus becoming primary cavity nester,whereas others occupied nests buil. with wood sticks by another invasive species,the monk parakeet Myiopsitta *** use of these novel.nesting strategies increased the number of breeding pairs by up to 52%over 6 years,contributing to a 128.8%increase of the whol. *** nests were l.cated at greater heights above ground and were more aggregated around conspecifics but did not resul. in greater breeding success than natural.*** of monk parakeet col.nies by rose-ringed parakeets al.o benefited the former species through a protective-nesting association against nest *** resul.s show how an invasive species innovate nesting behaviors and increase nest-site avail.bil.ty in the recipient environment,thus facil.tating its popul.tion growth and invasion *** behavioral.innovations in other invasive rose-ringed parakeet popul.tions may be overl.oked,and shoul. be considered for effective management pl.ns.

关键词： antipredator response behavioral.fl.xibil.ty biol.gical.invasions cavity nesters nesting innovation reproductive success

Design and optimization of supersonic turbines for detonation combustors

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Chinese Journal.of Aeronautics 2022年第11期35卷 33-44页

作者： Jorge SOUSA El.na COl.ADO-MORATA guillermo PANIAGUA Fl.mish InstituteforTechnol.gical.Research Mol 2400Belgium Commissariat à l.nergie atomique et aux énergies al.ernatives Le Barp 33114France Mechanical.Engineering Purdue UniversityWest-Lafayette IN 47906USA

Detonation-based engines offer a potential.surge in efficiency for compact thermal.power systems. However, these cycl.s require ad-hoc components adapted to the high outl.t vel.city from the detonation combustors. This paper presents the design methodol.gy of turbine stages suitabl. for supersonic inl.t conditions and provides a detail.d anal.sis of optimized turbine geometries. A reduced-order sol.er examines the supersonic bl.de rows’ functional.design space, quantifies the turbine’s non-isentropic performance, and budgets the turbine l.ss for different optimized l.ading-edge designs and chord to pitch ratios. The shock-wave interactions were identified as the predominant contributor to turbine l.sses, and optimal.pitch-chord ratios were determined for various inl.t Mach numbers. Final.y, with this tool. the specific-power output for a wide range of design configurations was computed;and the metal.angl. that ensures fl.w starting and maximizes power extraction was cal.ul.ted. The detail.d numerical.study describes the fl.w interactions in a supersonic turbine and offers new correl.tions to guide the design of future supersonic turbines.

关键词： Rotating detonation Shock waves Supersonic fl.w Turbines Unstarting

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