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Conifer establishment after the eruption of the Paricutin volcano in central Mexico

Forest Ecosystems 2022年第1期9卷 71-82页

作者： Jesús Eduardo Sáenz-Ceja Blanca Lizeth Sáenz-Ceja J.Trinidad Sáenz-Reyes Diego Rafael Pérez-Salicrup instituto de investigaciones en ecosistemas y sustentabilidad Universidad Nacional Autéonoma de MéxicoAntigua Carretera a Patzcuaro 8701 Col.Ex hacienda San Joséde la Huerta58190MoreliaMexico Escuela Nacional de Estudios Superiores Unidad Morelia Universidad Nacional Autónoma de MéxicoAntigua Carretera a Patzcuaro 8701 Col.Ex hacienda San Joséde la Huerta58190MoreliaMexico instituto Nacional de investigaciones Forestales Agrícolas y PecuariasCampo Experimental UruapanAv.Latinoamericana 1101Col.Revolución60500UruapanMexico

Background:Volcanic eruptions have large effects on forest ecosystems and create new substrates,triggering primary succession processes.The Paricutín volcano,born in central-western Mexico,erupted between 1943 and 1952.After the cessation of the eruptive activity,plant colonization began on the lava flows and tephra deposits,including the conifer species that dominate the surrounding mature forests.This study aims to reconstruct the history of the establishment of conifer trees on the substrates created by the Paricutín eruption.Methods:16 sampling plots were established along three transects with northern,southern,and south-western aspects,located every 250 m from the preserved forest to the volcanic cone.Increment cores from 400 conifer trees were extracted and their age was determined by cross-dating annual tree rings.The order of the species colonization and the tree establishment,abundance,and dominance patterns were characterized.Also,the influence of the distance from the mature forests and the inter-annual climatic conditions on the temporal tree establishment pattern was evaluated.Results:Eight pine and one fir species have been established since 1970,only 18 years after the end of the eruptive period.However,tree establishment increased by 12.9%annually after 1995,with the youngest tree in our sample getting established in 2015.We did not find a well-defined temporal and spatial pattern of species arrival,which suggests that colonization occurred randomly,although the four pine species that were established early became the most abundant and dominant.Tree establishment was not influenced by the distance from the mature forest,and wet inter-annual conditions did not enhance pulses of tree recruitment,exhibiting a continuous tree establishment pattern.Conclusions:Conifer species have shown a great capacity for colonizing volcanic substrates created by the Paricutín eruption,which suggests that tropical montane conifers can regenerate rapidly under high-magnitude disturbances.These findings support the use

关键词： Age structure dendrochronology Lava flow Primary succession Tropical montane forest

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demographic and behavioral responses of the White-winged Dove to human disturbances during winter in northwestern Mexico

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Avian Research 2022年第4期13卷 437-444页

作者： Ruben Ortega-Alvarez Jovani Le on-Aguilar Antonio Isain Contreras-Rodríguez Gustavo Casta neda de los Santos instituto de investigaciones en ecosistemas y sustentabilidad(IIES)-Universidad Nacional Autonoma de Mexico Campus MoreliaAntigua Carretera a Patzcuaro 8711Col.San Jose de la HuertaMoreliaMichoacan58190Mexico Programa de Aves Urbanas(PAU) Los MochisSinaloaMexico Quirino Mendoza#320 Colonia del CarmenXochimilcoCiudad de Mexico16720Mexico departamento de Educacion Ambiental Jardín Bot anico Benjamin Francis JohnstonSinaloaMexico

The simultaneous study of demography and behavior might provide a more comprehensive understanding about animal responses to anthropogenic disturbances.The White-winged Dove(Zenaida asiatica)is a frequent dweller of urban and agricultural habitats in North America,Central America,and the Caribbean.Still,research on the species is heavily biased to the USA.We analyzed the response of the species to human disturbances during winter across an urban-agricultural landscape in northwestern Mexico through a demographic and behavioral approach.We modeled the effect of disturbance types(pedestrians,cars,pavement and building cover)on the density of the species.Also,we investigated if surveillance behavior varied across the landscape by estimating and comparing perching proportion among land uses(urban grey areas,urban green areas,cropfields,shrublands).We did not detect the species within cropfields,possibly because food resources were not available for the dove during winter in this land use.Pavement cover limited species’density,as it might reduce the surface of the preferred feeding substrates of the dove.Pedestrians and building cover increased the density of the species,as they might provide food and shelter for the dove,respectively.Surveillance behavior peaked in urban grey areas,whereas it dropped in urban green areas.Differences on threat levels,threat type,and protective cover among land uses might in-fluence such behavioral pattern.Our approach contributes to the knowledge of the species and demonstrates that both demographic and behavioral cues provide complementary evidence for analyzing the impact of human disturbances on animals.

关键词： Agriculture density Perch Sinaloa Urbanization Zenaida asiatica

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Amphibian richness along modified riparian areas of central Mexico:conservation priorities

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Ecological Processes 2022年第1期11卷 902-915页

作者： Marco Tulio Oropeza‑Sánchez Ireri Suazo‑Ortuño Julieta Benítez‑Malvido Erandi Monroy‑Hernández Roberto Munguía‑Steyer instituto de investigaciones en ecosistemas y sustentabilidad(IIES) Universidad Nacional Autónoma de MéxicoAntigua Carretera a Pátzcuaro 8701CP 58190 MoreliaMichoacánMexico instituto de investigaciones Sobre los Recursos Naturales(INIRenA) Universidad Michoacana de San Nicolás de HidalgoAv.San Juanito Itzícuaro S/NCP 58330 MoreliaMichoacánMexico Facultad de Estudios Superiores Iztacala(FES‑Iztacala) Universidad Nacional Autónoma de MéxicoAv.de los Barrios No.1CP 54090 Tlalnepantla de BazEstado de MéxicoMexico.

Background:Land‑use change frequently affects faunistic populations and communities.To achieve successful conservation strategies,we need suitable information about species distribution and the causes of extinction risk.Many amphibian species depend on riparian vegetation to complete their life cycles.About 41%of amphibian species are globally threatened,and accurate estimations of population size,species richness and the identification of critical habitats are urgently needed worldwide.To evaluate the magnitude of changes in species richness and demography,estimations that include detection probability are necessary.In this study,we employed multi‑species occupancy models to estimate detection probability and the effect of land cover type(i.e.,cropland,artificial pasture,secondary and mature forest)in a 500‑m radius on the occupancy probability and richness of diurnal amphibians in 60 riparian zones in the state of Michoacán in central Mexico.Furthermore,we evaluated the potential of the endemic salamander Ambystoma ordinarium as a flagship species for the conservation of other native amphibian species.Results:We registered a total of 20 amphibian species in the diurnal assemblage,of which 10 species are considered at risk of extinction.We found that cropland was the most important land‑use type for explaining amphibian distribu‑tion in riparian zones,with negative effects on most amphibian species.We found no differences in species richness between zones with and without A.ordinarium.In riparian zones occupied by A.ordinarium,however,we found a higher number of species at risk of extinction.Conclusions:Our findings showed negative effects of croplands on the distribution of most amphibian species.The riparian zones are important for the maintenance of native diurnal amphibian communities and A.ordinarium can act as a flagship species for the conservation of threatened amphibian species.

关键词： Flagship species Habitat quality Occupancy models Salamanders Threatened species

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Early performance of two tropical dry forest species after assisted migration to pine-oak forests at different altitudes:strategic response to climate change

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Journal of Forestry Research 2020年第4期31卷 1215-1223页

作者： Pilar Angélica Gómez-Ruiz Cuauhtémoc Sáenz-Romero Roberto Lindig-Cisneros Catedrática CONACyT Centro de Investigaciónde Ciencias Ambientales CICAFacultad de Ciencias NaturalesUniversidad Autónoma del CarmenCiudad del CarmenCampecheMexico instituto de investigaciones Agropecuarias y Forestales Universidad Michoacana de San Nicolás de Hidalgo(IIAFUMSNH)MoreliaMexico instituto de investigaciones en ecosistemas y sustentabilidad(IIES) Universidad Nacional Autónoma de MéxicoCampus MoreliaMoreliaMexico

Assisted migration has been proposed as a strategy for adaptive management of forest species in response to expected effects of climate change,but it is controversial for several reasons.Tropical dry forests are among the most threatened ecosystems in the world.In Mexico,historically,land-use change and deforestation have been decreasing forest cover,and climate change is shifting the potential distribution of different forest types,exacerbating the risk of local extinctions.Assisted altitudinal migration could be a feasible strategy for reducing local extinctions in response to climate change and lack of landscape connectivity.Our objective was to evaluate survival and growth of Albizia plurijuga and Ceiba aesculifolia,two tropical deciduous forests species in Mexico.We transplanted 4-month-old seedlings to experimental raised beds at three altitudes(2100,2400 and 2700 m a.s.l.),exceeding their upper regional limit of distribution(2000 m a.s.l.).We also tested seed germination at each altitude.We monitored the experiment for 10 months.For both species,as altitude increased and cold weather was more prevalent,plant performance declined.Within species,differences in individual growth were significant among altitudes.Overall survival was 18.5%for A.plurijuga and 24.5%for C.aesculifolia.Both species had higher survival and better growth at lower altitude,and no seedling emergence at any altitude.We conclude that assisted migration can be implemented for each species by an upward attitudinal shift within,and not exceeding,400 m beyond their present upper altitudinal limit of distribution.Our results indicate that for many species that show altitudinal gradients at regional scales,unless current climate conditions change,the potential to establish outside their range is minimal.

关键词： Albizia plurijuga Ceiba aesculifolia Climate change Fabaceae Forest management Mitigation strategy Range expansion

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Unraveling the morphological patterns of a subantarctic eelpout:a geometric morphometric approach

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Integrative Zoology 2023年第2期18卷 372-384页

作者： Fernanda S.ORREGO Mathias HÜNE Hugo A.BenÍTEZ Mauricio F.LANDAETA Laboratorio de Ictiología e Interacciones Biofísicas(LABITI) Instituto de BiologíaFacultad de CienciasUniversidad de ValparaísoValparaísoChile Centro de Investigación para la Conservación de los ecosistemas Australes(ICEA) Punta ArenasChile Laboratorio de Ecología y Morfometría Evolutiva Centro de Investigación de Estudios Avanzados del MauleUniversidad Católica del MauleTalcaChile Centro de Observación Marino para Estudios de Riesgos del Ambiente Costero(COSTA-R) Universidad de ValparaísoViña del MarChile Millennium Nucleus for Ecology and Conservation of Temperate Mesophotic Reef Ecosystems(NUTME) Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems(BASE) SantiagoChile

Phenotypic variation in organisms depends on the genotype and the environmental constraints of the habitat that they exploit.Therefore,for marine species inhabiting contrasting aquatic conditions,it is expected toﬁnd covari-ation between the shape and its spatial distribution.We studied the morphology of the head and cephalic sensory canals of the eelpout Austrolycus depressiceps(4.5–22.5 cm TL)across its latitudinal distribution in South Paciﬁc(45°S–55°S).Geometric morphometric analyses show that the shape varied from individuals with larger snout and an extended suborbital canal to individuals with shorter snouts and frontally compressed suborbital canal.There was size variation across the sampled populations,but that size does not have a clear latitudinal gradient.Only 8%of the shape variation relates to this size variation(allometry),represented by a decrease in the relative size of the eye,and a depression of the posterior margin of the head.There were spatial differences in the shape of the head,but these differences were probably caused by allometric effects.Additionally,2 of the canals of the cephalic lateralis pores and the head shape showed modularity in its development.This study shows that the morphology of marineﬁsh with a shallow distribution varies across distances of hundreds of kilometers(i.e.,phenotypic modulation).

关键词： Austrolycus depressiceps geometric morphometrics morphology phenotype spatial distribution

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True grit: ingestion of small stone particles by hummingbirds in West Mexico

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Avian Research 2021年第4期12卷 739-749页

作者： Omar Maya-García Mauricio Ortega-Flores Jorge E.Schondube Posgrado en Ciencias Biológicas Unidad de PosgradoCoordinación del Posgrado en Ciencias BiológicasUniversidad Nacional Autónoma de MéxicoEdificio D1er pisoCircuito de PosgradosCiudad UniversitariaDel.CoyoacánC.P.04510 México D.F.Mexico Laboratorio de Ecología Funcional Instituto de Investigaciones en Ecosistemas y SustentabilidadUniversidad Nacional Autónoma de MéxicoAntigua Carretera a Pátzcuaro No.8701Col.Ex Hacienda de San Joséde la HuertaC.P.58190 MoreliaMichoacánMexico

Background: Grit is used by birds mainly for grinding hard food items but can also serve a nutritional role as a source of minerals. Ingestion of grit by birds has been documented primarily in species that feed on seeds and invertebrates.Although feeding mainly on nectar and small arthropods, hummingbirds also ingest grit, but why they do so is unclear. We quantified the number of grit particles in the stomachs of six species of hummingbirds during an annual cycle in a seasonal ecosystem of West Mexico.Methods: We compared the number of grit particles in the stomachs of different hummingbird species(Mexican Violetear Colibri thalassinus, Amethyst-throated Mountaingem Lampornis amethystinus, White-eared Hummingbird Basilinna leucotis, Rivoli's Hummingbird Eugenes fulgens, Broad-tailed Hummingbird Selasphorus platycercus, and Rufous Hummingbird S. rufus), and between sex and age categories during the different seasons of a year. To deter-mine if grit was used to grind ingested arthropods, we examined the relationships between the number of grit parti-cles, the biomass of arthropods ingested, and their chitin content.Results: Although species did not differ in the number of grit particles in their stomachs, we found that grit was mostly ingested by female individuals, with only one male of one species(Mexican Violetear) presenting grit in its stomach. We also found that female hummingbirds had grit in their stomachs during the rainy and the cold-dry season(June-February) but not during the warm-dry season(March-May). Our analyses revealed no relationship between the number of grit particles and the amount of ingested arthropods and arthropod chitin content. However,high grit consumption was related to wasp ingestion on Mexican Violetears.Conclusions: Our results indicate that grit is used mainly by female hummingbirds. The seasonal variation in the ingestion of grit by female individuals suggests that it can be used to meet mineral requirements related to breed-ing;however, this topic needs further exploration. Addi

关键词： Arthropod chitin content Arthropod digestion Breeding season Mineral nutritional requirements

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Seasonal variation in native hydraulic conductivity between two deciduous oak species

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Journal of Plant Ecology 2020年第1期13卷 78-86页

作者： Dilia Mota-Gutiérrez Guadalupe Arreola-González Rafael Aguilar-Romero Horacio Paz Jeannine Cavender-Bares Ken Oyama Antonio Gonzalez-Rodriguez Fernando Pineda-García Facultad de Biología Universidad Michoacana de San Nicolás de Hidalgo.Edificio RCiudad UniversitariaGral.Francisco J.Múgica S/N A-1Felicitas de Río58030 MoreliaMichoacánMexico Escuela Nacional de Estudios Superiores Unidad MoreliaUniversidad Nacional Autónoma de México.Antigua Carretera a Pátzcuaro 8701Ex-Hacienda de San Joséde La Huerta58190 MoreliaMichoacánMexico instituto de investigaciones en ecosistemas y sustentabilidad Campus MoreliaUniversidad Nacional Autónoma de México.Antigua Carretera a Pátzcuaro 8701Ex-Hacienda de San Joséde La Huerta58190 MoreliaMichoacánMexico deparment of Ecology Evolution and BehaviorUniversity of MinnesotaSaint PaulMN 55108USA

植物抗旱性机制包括耐旱性和避旱性。耐旱性的特征主要是木质部易栓塞性和膨压损失点,而避旱性的特征则是叶片脱落和落叶性。虽然这些机制可以权衡物种连续性,但对于干旱引发的叶片脱落和持续时间的变化如何影响木质部和叶片耐受性之间... 详细信息

植物抗旱性机制包括耐旱性和避旱性。耐旱性的特征主要是木质部易栓塞性和膨压损失点,而避旱性的特征则是叶片脱落和落叶性。虽然这些机制可以权衡物种连续性,但对于干旱引发的叶片脱落和持续时间的变化如何影响木质部和叶片耐受性之间的关系却知之甚少。在本研究中,我们研究两种具有不同叶片脱落叶行为的橡树(栎属)的耐旱性程度差异。我们预测了Quercusdeserticola在旱季结束时落叶(晚落叶)而面临更大的空化风险,导致其比Q.laeta更耐旱,对水分的利用也更加保守。Q.laeta只在旱季中期很短的时间内落叶(短落叶)。本研究在墨西哥中部进行,两种橡树各具有单个种群,它们之间相距1.58公里,海拔差为191米。Q.deserticola(晚落叶)多出现在下坡,而Q.laeta(短落叶)多出现在沿坡度海拔较高的地方。我们评估了样地内茎干的水分传导率的季节差异(雨季和旱季),并检测了两个物种间木质部对空化的脆弱性、叶片水分利用和叶片膨松损失点的差异。两种橡树在耐旱性状方面没有显著差异,主要包括木质部易栓塞性、叶片膨松损失点和气孔导度。然而,两种植物在旱季都有不同的表现:短落叶植物对木质部功能的负面影响要比晚落叶植物低。综上所述,两种橡树在植物生理性能方面的季节变化取决于冠层叶面积的减少。

关键词：栎属树木水力传导栓塞叶片物候学

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A Review on Genetically Modified Plants designed to Phytoremediate Polluted Soils： Biochemical Responses and International Regulation

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Pedosphere 2018年第5期28卷 697-712页

作者： Edgar VAZQUEZ-NUNEZ Julian M. PenA-CASTRO Fabian FERNANdeZ-LUQUenO Eduardo CEJUDO Maria G. de la ROSA-ALVAREZ Maria C. GARCIA-CASTANED departamento de Ingenierias Quimica Electronica y Biomedica Division de Ciencias e Ingenierlas Universidad de Guanajuato (UG) Campus Leon Loma del Bosque 103 Leon Gto. 37150 (Mexico) Laboratorio de Biotecnologla Vegetal Instituto de Biotecnologia Universidad del Papaloapan Tuxtepec Oaxaca 68333 (Mexico) programa en sustentabilidad de los Recursos Naturales y eneryla Cinvestav Saltillo Industria Metalurgica 1062 Parque Industrial Saltillo-Ramos-Arizpe Ramos Arizpe Coahuila 25900 (Mexico) CONACyT Unidad de Ciencias del Agua (UCIA) Centro de Investigacion Cientifica de Yucatan A.C. Cancdn Quintana Roo 77500 (Mexico) Center for the environmental Implications of Nanotechnology University of California at Los Angeles- University of Texas at El Paso 500 W University Ave El Paso 79968 (USA) CONACyT Universidad de Guanajuato Loma del Bosque 103 Leon Guanajuato 37150 (Mexico)

In recent years,there has been an increasing interest in finding sustainable strategies for the efficient removal of contaminants from soils.The objective of this review is to examine the biochemical principles of specific genetic modifications in plants,their applications in the field for specific contaminants as phytotechnologies,and their international regulation.In addition,the review presents some biological aspects of rhizosphere-related phenomena,the interactions of organic and inorganic pollutants with plants,and the performance of the phytotechnologies across the continents.During the last few decades,at least eight genera of genetically modified plants(GMPs)have been tested and used for soil remediation with outstanding results.Arabidopsis,Nicotiana,and Oryza are the plant genera most widely studied.Specific plant genes such as metal transporters,chelators,metallothioneins,phytochelatins,and oxygenases have been transferred to plants to improve the elimination of contaminants in soil.We discuss some important aspects of gene manipulation and its application for removal of diverse contaminants.A key challenge faced by phytotechnologies is the final disposal of the generated biomass,from a safety aspect.We argue that the commercial success of phytotechnologies depends on the generation of valuable biomass on contaminated land and its use for bioenergy generation.The use of such technologies would promote a broader understanding of the importance of plants,especially GMPs,in the environment and their contribution to environmental sustainability.

关键词：生物化学植物检验评论国际土壤设计修改遗传

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Mollusks of the Rocky Intertidal Zone at Three Sites in Oaxaca,Mexico

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Open Journal of Marine Science 2014年第4期4卷 326-337页

作者： Pedro Flores-Rodríguez Rafael Flores-Garza Sergio García-Ibánez Carmina Torreblanca-Ramírez Lizeth Galeana-Rebolledo enedina Santiago-Cortes Laboratorio de Ecologia Costera y sustentabilidad Unidad Academica de Ecologia MarinaUniversidad Autonoma de GuerreroAcapulcoMexico Doctorado en Ciencias Ambientales Unidad de Ciencias de Desarrollo RegionalUniversidad Autonoma de GuerreroAcapulcoMexico

The community of mollusks at three rocky intertidal zone in Oaxaca, Mexico was analyzed. Two samplings per site were conducted. At each sampling the inspected area was 10 m2. The sampling unit was 1 m2. 5862 specimens were examined. 68 mollusks species were identified. The families better represented in species richness were: FISSURELLIDAE, MURICIDAE, LOTIIDAE, MyTILIDAE, CHAMIDAE, ISCHNOCHITONIDAE y CHITONIDAE. The species that had the greatest density were Lottia discors, Siphonaria palmata, Lottia acutapex, Chormoytilus palliopunctatus, Brachidontes adamsianus, Chton articulatus e Ischnochiton muscarius. The species with the widest distribution represent 11.76%. With irregular distribution was found in 58.82% of the species. The gastropod Crucibulummonticulus, the bivalve C. palliopunctatus and the polyplacophoran C. articulatus had the greatest size. The value of diversity index was H’ = 4.29 bits/ind. and J’ = 0.72. The mollusks community in the rocky intertidal zone study sites is characterized by small size, because they rarely exceed seventy millimeters. The values of H’ and J’ indicate that the mollusk community in the study area has a high diversity and high uniformity, corresponding to mature and stable communities in a tropical region.

关键词： Intertidal Zone Oaxaca Biodiversity Mollusks

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Polyplacophora species richness,composition and distribution of its community associated with the intertidal rocky substrate in the marine priority region No.32 in Guerrero,Mexico

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Open Journal of Ecology 2012年第4期2卷 192-201页

作者： Rafael Flores-Garza Lizeth Galeana-Rebolledo Adriana Reyes-Gomez Sergio Garcia Ibanez Carmina Torreblanca-Ramirez Pedro Flores-Rodriguez y Arcadio Valdes Gonzalez Unidad Academica de Ecologia Marina Laboratorio de Ecologia Costera y SustentabilidadFraccionamiento Las PlayasAcapulcoMexico Doctorado en Ciencias Ambientales Unidad de Ciencias de Desarrollo RegionalUniversidad Autonoma de Guerrero.Calle Pino s/n Colonia El Roble AcapulcoAcapulcoMexico

The coast of Acapulco is located within the Marine Priority Region No. 32 (MPR No. 32) at the State of Guerrero, Mexico. The National Commission for the Knowledge and Use of Biodiversity has stated the lack of information on marine species that live there, among which are the Class Polyplacophora. This study aimed to: 1) determine species richness, 2) the community structure based on the representative families, 3) estimate the density, 4) locate species distribution, 5) determine their degree of occurrence (hierarchical position) within the community, 6) analyze the structure of length and width across the populations and 7) estimate the diversity index. The intertidal rocky substrate at seven beaches was sampled from 2009 to 2012. The sampling unit 1 m2, while the area sampled was 10 m2. It was analyzed 2.548 specimens of Polyplacophora, with 20 species identified. Tonicellidae and Ischnochitonidae were the Families better represented inspecies richness and Chitonidae in abundance. Lepidochitona flectens is a new record for the Mexican Tropical Pacific and Stenoplax mariposa for MPR. No. 32. The density was 25.48 specimens/m2. Eight dominant species were determined. Chiton albolineatus had the highest density. Ischnochiton muscarius, Chaetopleura unilineata, Chiton albolineatus and Chiton articulatus presented wide distribution. Chiton articulatus showed the largest size in length and width. H’ = 2.01 bits/ individual. Numerous dominant species were present with broad and regular distribution, probably due to Polyplacophora body design, which allows for better adaptation to the rigorous environmental conditions of the rocky intertidal.

关键词： Polyplacophora Species Richness Distribution Sizes

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