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Camera traps reveal the natural corridors used by mammalian species in eastern Mexico

Ecological Processes 2022年第1期11卷 711-722页

作者： Jonathan O.Huerta‑Rodríguez Octavio C.Rosas‑Rosas Lauro López‑Mata JoséL.Alcántara‑Carbajal Luis A.Tarango‑Arámbula Programa de Recursos Genéticos y Productividad‑Ganadería Colegio de Post‑graduadosCampus MontecilloTexcocoMexico programa de Innovación en Manejo de recursos Naturales Colegio de PostgraduadosCampus San Luis PotosíSan Luis PotosíMexico programa de Dinámica y Conservación de Bosques y Selvas Macroecología y BiodiversidadColegio de PostgraduadosCampus MontecilloTexcocoMexico

Background:Habitat loss and fragmentation in the Sierra Madre Oriental(SMO)ecological corridor have negative impacts on the movement and distribution of mammalian species that are of great ecological and evolutionary importance.Part of the SMO ecological corridor that is located in the state of Hidalgo is less studied despite being a potential dispersal route for mammals.The objectives of this study were to evaluate the presence and activity of terrestrial mammals in the riparian and non‑riparian zones of SMO.Results:Camera traps detected 15 mammalian species(i.e.,14 native and 1 domestic)in the non‑riparian zone,and 12 mammalian species in the riparian zone(i.e.,10 wild and 2 domestic).The riparian corridor was mainly used by opportunistic medium‑sized carnivores,while large carnivores and their potential prey were more frequent in the non‑riparian zone.Conclusions:Our findings suggest terrestrial mammals avoid the use of natural corridors due to the presence of domestic dogs,cattle and humans and look for new dispersal routes to move through their habitat and find the resources they need to survive.Even though some species can use disturbed corridors to move and find resources,they will change their activity patterns to avoid contact with humans and potential threats like dogs.It is,therefore,crucial to identify not one,but several corridors that must be preserved to improve the connectivity of terrestrial mammals in disturbed landscapes.

关键词： Activity Jaguar Cattle detectability Dog Herbivore Disturbance Prey Relative abundance

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Epistatic interactions between pterin and carotenoid genes modulate intra-morph color variation in a lizard

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Integrative Zoology 2022年第1期17卷 44-53页

作者： Prem AGUILAR Pedro ANDRAde Guillem PÉREZ I de LANUZA CIBIO/InBIO Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do PortoPortoPortugal Ethology Lab Institut Cavanilles de Biodiversitat i Biologia EvolutivaUniversitat de ValènciaValènciaSpain

Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful systems.Within-morph continuous variation,on the other hand,has been neglected in most of the studies.Here,we combine spectrophotometric/visual modeling and genetic data to study the mechanisms promoting continuous variation within categorical color morphs of Podarcis muralis.Our results suggest that intra-morph variability in the pterin-based orange morph is greater compared to white and yellow morphs.We also show that continuous variation within the orange morph is partially discriminable by conspecifics.genotyping results indicate that allelic variants at the BCO2 locus(responsible for deposition of yellow carotenoids)contribute to generate continuous variation in orange individuals.However,other intrinsic and/or extrinsic mechanisms,such as body size,might be involved,opening a new avenue for future research on the drivers of continuous variation within-morphs.

关键词： BCO2 color polymorphism continuous variation lizard Podarcis muralis

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Dietary carbohydrate-to-protein ratio influences growth performance,hepatic health and dynamic of gut microbiota in atlantic salmon(Salmo salar)

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Animal Nutrition 2022年第3期10卷 261-279页

作者： Alejandro Villasante Carolina Ramírez Hector Rodríguez Patricio Dantagnan Adrian Hernandez Elías Figueroa Jaime Romero Facultad de Medicina Veterinaria y Agronomía Universidad de Las AmericasSantiagoChile Laboratorio de Biotecnología de Alimentos Unidad de AlimentosInstituto de Nutricion y Tecnología de Los Alimentos(INTA)Universidad de ChileSantiagoChile programa de Anatomía y Biología del desarrollo Facultad de MedicinaUniversidad de ChileSantiagoChile Núcleo de Investigacion en Produccion Alimentaria Facultad de Recursos NaturalesUniversidad Catolica de TemucoTemucoChile

Atlantic salmon(Salmo salar)fed a carbohydrate-rich diet exhibit suboptimal growth performance,along with other metabolic disturbances.It is well known that gut microbes play a pivotal role in influencing metabolism of the host,and these microbes can be modified by the diet.The main goal of the present study was to determine the effect of feeding graded levels of digestible carbohydrates to Atlantic salmon on the distal intestine digesta microbiota at 3 sampling times(i.e.,weeks 4,8 and 12),during a 12-week trial.A low carbohydrate-to-high protein diet(LC/HP,0%wheat starch),a medium carbohydrate-tomedium protein diet(MC/MP,15%wheat starch)or a high carbohydrate-to-low protein diet(HC/LP,30%wheat starch)was fed to triplicate fish tanks(27 to 28 fish per tank).We performed an in-depth characterization of the distal intestine digesta microbiota.Further,growth parameters,liver histology and the expression of genes involved in hepatic neolipogenesis in fish were measured.Fish fed a HC/LP diet showed greater hepatosomatic and viscerosomatic indexes(P=0.026 and P=0.018,respectively),lower final weight(P=0.005),weight gain(P=0.003),feed efficiency(P=0.033)and growth rate(P=0.003)compared with fish fed the LC/HP diet.Further,feeding salmon a high digestible carbohydrate diet caused greater lipid vacuolization,steatosis index(P=0.007)and expression of fatty acid synthase(fas)and delta-6 fatty acyl desaturase(d6fad)(P=0.001 and P=0.001,respectively)in the liver compared with fish fed the LC/HP diet.Although,the major impact of feeding a carbohydrate-rich diet to Atlantic salmon in beta diversity of distal intestine digesta microbiota was observed at week 4(HC/LP vs MC/MP and HC/LP vs LC/HP;P=0.007 and P=0.008,respectively)and week 8(HC/LP vs MC/MP;P=0.04),no differences between experimental groups were detected after 12 weeks of feeding.Finally,at the end of the trial,there was a negative correlation between lactic acid bacteria(LAB)members,including Leuconostoc and Lactobacillus,with hepatic steatosis level,the hepatosomat

关键词： Microbiota Microbiome Atlantic salmon Steatosis Lactic acid bacteria Probiotics

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Functional diversity in an Andean subparamo affected by wildfire in Colombia

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Plant Diversity 2023年第4期45卷 385-396页

作者： Korina Ocampo-Zuleta Angela Parrado-Rosselli Instituto de Ciencias Ambientales y Evolutivas.Facultad de Ciencias.Universidad Austral de Chile.Campus Isla Teja 5090000 ValdiviaChile programa de Doctorado en Ciencias Mencion Ecología y Evolucion Escuela de GraduadosFacultad de CienciasUniversidad Austral de ChileValdiviaChile Jardín Botanico de Bogota Jose Celestino Mutis Subdireccion CientíficaLínea de Investigacion en Restauracion Ecologica111071BogotaColombia Facultad del Medio Ambiente y recursos Naturales Universidad Distrital Francisco Jose de CaldasSede Vivero111711BogotaColombia

Recently,the Andean subparamo in Colombia has experienced severe wildfires,but little is known about the functional composition of recovering or not after a wildfire.Therefore,we examined the functional community composition subparamo affected byfire in 2016.We documented how functional traits changed 31 months after the disturbance and compared them with an unburned site.We sampled from one to two years after the fire every four months,then registered all recruits in 1655m plots.New individuals were classified into strategy functional groups based on the traits of persistence and dispersal.The first group was stem type and regeneration mechanism(seedling and resprout),and the second was fruit type and dispersal mode.We investigated the degree to which functional diversity changes plant communities over time(woody and non-woody),and we compared it with an unburned site.The most relevant results showed that resprouts and seed regenerated increased post-fire time and significant differences between sampling periods.The anemochory is the most relevant dispersal mode that indicates the community capacity to colonize the new gaps opened by the fire rapidly.We discuss how wildfire appears to be a triggering factor for persistence and dispersal strategy groups in subparamo burned given their characteristics of tolerance to stress.For this reason,a greater functional divergence between the ecosystems studied post-fire recovery has been related to higher levels of biodiversity at the landscape scale due to the high degree of endemism and significant differences in species composition between paramos.

关键词： Subparamo Cerro aguanoso Dispersal mode Functional traits Postfire regeneration

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Lower marine productivity increases agonistic interactions between sea lions and fur seals in Northern Pacific Patagonia

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Current Zoology 2022年第6期68卷 657-666页

作者： Felipe MONTALVA Hector PAVES Diego PEREZ-VENEGAS Karin G BARRIENTOS E Carola VALENCIA Diego MIRANDA-URBINA Mauricio SEGUEL Facultad de Ciencias Biologicas Pontificia Universidad Catolica de ChileSantiagoChile departamento de Ciencias Basicas Facultad de CienciasUniversidad Santo TomasOsornoChile Centro de Investigacion y Gestion de recursos Naturales(CIGREN) Instituto de BiologıaFacultad de CienciasUniversidad de ValparaısoValparaısoChile programa de Doctorado en Ciencias Agrarias Escuela de Graduados de laFacultad de Ciencias Agrarias y AlimentariasUniversidad Austral de ChileValdiviaChile Facultad de Medicina Veterinaria Sede PatagoniaUniversidad San SebastianPuerto MonttChile Instituto de Ciencias Biologicas Universidad de TalcaTalcaChile department of Pathobiology Ontario Veterinary CollegeUniversity of GuelphGuelphCanada

Interspecific interactions are key drivers of individual and population-level fitness in a wide range of animals.However,in marine ecosystems,it is relatively unknown which biotic and abiotic factors impact behavioral interactions between competing species.We assessed the impact of weather,marine productivity,and population structure on the behavioral agonistic interactions between South American fur seals(SAFSs),Arctocephalus australis,and South American sea lions(SASLs),Otaria byronia,in a breeding colony of SAFS.We hypothesized that agonistic interactions between SAFSs and SASLs respond to biotic and abiotic factors such as SAFS population structure,marine productivity,and weather.We found that SASL and SAFS interactions almost always resulted in negative impacts on the social structure or reproductive success of the SAFS colony.SASL adult males initiated stampedes of SAFS and/or abducted and predated SAFS pups.Adult SAFS males abundance and severe weather events were negatively correlated with agonistic interactions between species.However,proxies for lower marine productivity such as higher sea surface temperature and lower catches of demerso-pelagic fish were the most important predictors of more frequent agonistic interactions between SAFS and SASL.Under the current scenario of decline in marine biomass due to global climate change and overfishing,agonistic interactions between competing marine predators could increase and exacerbate the negative impacts of environmental change in these species.

关键词： interspecific interactions climate change Guafo Island sea surface temperature South American fur seal South American sea lion

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Six forests in one:Tree species diversity in the Bosque Protector Chongón Colonche,a lowland mountain range in coastal Ecuadorian

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Forest Ecosystems 2022年第6期9卷 725-733页

作者： Oswaldo Jadan David ADonoso Edwin Ponce-Ramírez Franz Pucha-Cofrep Omar Cabrera Facultad de Ciencias Agropecuarias Universidad de Cuenca12 de Octubre y Diego de TapiaCuenca010107Ecuador programa de Doctorado en Conservacion de recursos Naturales Escuela Internacional de DoctoradoUniversidad Rey Juan CarlosMostolesMadridES-28933Spain departamento de Biología Escuela Politecnica NacionalLadron de Guevara E11⋅253Quito170525Ecuador Geoforest S.A 12 de febrero y Av.Franklin VegaMacas140150Ecuador Grupo de Investigacion Hidrología y Climatología Universidad Tecnica Particular de LojaSan Cayetano Alto S/NLoja110101Ecuador Brandenburg University of Technology(BTU)Cottbus-Senftenberg 03044CottbusGermany departamento de Ciencias Biologicas y Agropecuarias Universidad Tecnica Particular de LojaSan Cayetano Alto S/NLoja110101Ecuador

Tropical mountain ranges shape the structure of tree communities and promote highly diverse natural habitats.The“Bosque Protector Chong on-Colonche”(BPCC),an 86,000-ha mountain formation situated on the coast of Ecuador,is biogeographically important for the region by connecting floristic elements of the wet Choco and the dry Tumbesian forests.Our understanding of the factors that model tree and palm diversity and distribution in this mountain range are limited.We measured and identified all trees and palms(DBH≥10 cm)in 289 plots of0.2 ha,distributed throughout BPCC.We used generalized linear models to explain the relationship between forest diversity and structure and climatic variables(temperature,rain,aridity),and altitude.We then used cluster and non-metric multidimensional scale(NMDS)analyses to search for distinct forest communities within the BPCC.Variance partition(varpart)was used to determine which predictor variables best explained these distinct forest communities.A species indicator analysis identified the species most likely to define these distinct forest communities.Finally,we carried out a niche modeling approach to identify the potential distribution of these forest communities within BPCC.In total,we identified 220 tree and palm species in our survey.The average number of species per plot was 17.8±5.8,ranging from 3 to 40 species.Classification methods sorted the 289study plots into six different forest communities,three communities in the dry forest and three in the semi-humid Garúa forest.Precipitation and temperature,but not altitude or aridity,explained floristic composition.These results emphasize the high but little cataloged diversity in the lowland mountain rainforests of coastal Ecuador.

关键词： Chongón-Colonche Climatic variables Dry forest Forest communities Garúa forest

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Viability,behavior,and color expression in the offspring of matings between common wall lizard Podarcis muralis color morphs

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Current Zoology 2022年第1期68卷 41-55页

作者： Javier ABALOS Guillem PEREZ I de LANUZA Alicia BARTOLOME Fabien AUBRET Tobias ULLER Enrique FONT Ethology Lab Instituto Cavanilles de Biodiversidad y Biologı´a EvolutivaUniversitat de ValenciaValenciaSpain CIBIO/InBIO Centro de Investigacao em Biodiversidade e Recursos Geneticos da Universidade do PortoPortoPortugal SETE Station d’Ecologie Theorique et ExperimentaleUPR2001Centre National de la Recherche ScientifiqueParisFrance department of Biology Lund UniversityLundSweden

Color polymorphisms are widely studied to identify the mechanisms responsible for the origin and maintenance of phenotypic variability in nature.Two of the mechanisms of balancing selection currently thought to explain the long-term persistence of polymorphisms are the evolution of alternative phenotypic optima through correlational selection on suites of traits including color and heterosis.Both of these mechanisms can generate differences in offspring viability and fitness arising from different morph combinations.Here,we examined the effect of parental morph combination on fertilization success,embryonic viability,newborn quality,antipredator,and foraging behavior,as well as inter-annual survival by conducting controlled matings in a polymorphic lacertid Podarcis muralis,where color morphs are frequently assumed to reflect alternative phenotypic optima(e.g.,alternative reproductive strategies).Juveniles were kept in outdoor tubs for a year in order to study inter-annual growth,survival,and morph inheritance.In agreement with a previous genome-wide association analysis,morph frequencies in the year-old juveniles matched the frequencies expected if orange and yellow expressions depended on recessive homozygosity at 2 separate loci.Our findings also agree with previous literature reporting higher reproductive output of heavy females and the higher overall viability of heavy newborn lizards,but we found no evidence for the existence of alternative breeding investment strategies in female morphs,or morphcombination effects on offspring viability and behavior.We conclude that inter-morph breeding remains entirely viable and genetic incompatibilities are of little significance for the maintenance of discrete color morphs in P.muralis from the Pyrenees.

关键词： alternative breeding strategies color polymorphism controlled matings lizard behavior morph ontogeny newborn viability

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Effects of vegetation strata and human disturbance on bird diversity in green areas in a city in southern Chile

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Avian Research 2018年第4期9卷 329-343页

作者： Andrés Munoz-Pedreros Marilyn González-Urrutia Francisco Encina-Montoya Heraldo V.Norambuena Núcleo de Investigación en Estudios Ambientales NEA Departamento de Ciencias AmbientalesFacultad de Recursos NaturalesUniversidad Católica de TemucoCasilla 15.DTemucoChile programa de Biodiversidad y Manejo de Vida Silvestre Centro de Estudios Agrarios y AmbientalesCasilla 164ValdiviaChile

Background: Urbanisation is a dominant geographical trend and an important component of global change, with unprecedented implications for socio?economic, cultural and environmental characteristics. However, green areas, including original fragments, can help to conserve native diversity, improving the functioning of these artificial systems in the long term. Urban areas can still provide habitats usable by wild birds, however the structural charac?teristics of the habitat formed by different types of green area differ, and therefore dissimilar bird diversities are to be expected. The object of this study was to characterise the α and β diversities of birds in different green areas and to analyse how diversity relates to ten variables that characterise the habitat.Methods: We studied the green areas in the city of Temuco, southern Chile(Park, Square and Median strips of main streets), evaluating the variables:(a) surface area,(b) vegetation,(c) estimated human impact as the proportions of vegetation and bare soil by area, and the vehicle traffic. The bird assemblage structures were characterised by α(intra?environment) diversity and β diversity(between environments) and the statistical analysis identified the environmen?tal variables related with the presence and abundance of birds. A statistical model was constructed to describe the contribution of the variables to bird diversity.Results: We found significant differences between the diversity of bird species in the three types of green area. The β showed medium to high similarity between the different study units. There was a negative correlation with bare soil areas; the correlations with vehicle flow, plant structure and tree and shrub cover were not significant, meaning that these variables did not explain the variation in the richness of bird species between the green areas. However the surface area did explain this variation presenting a positive potential relation. There was also a high correlation with the origin(native) of shrub species.Conclusions: The

关键词： Urban birds Urban green area Vegetation structure Bird composition Chile

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Abiotic and biotic drivers of struvite solubilization in contrasting soils

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Pedosphere 2023年第6期33卷 828-837页

作者： Antonio RUIZ-NAVARRO Manuel deLGADO-BAQUERIZO Concha CANO-DíAZ Carlos GARCíA Felipe BASTIDA Centro de Edafologia y Biologia Aplicada del Segura Consejo Superior de Investigaciones Cientificas(CEBAS-CSIC)Department of Soil and Water ConservationEspinardoMurcia E-30100Spain ICL Specialty Fertilizers Iberia TotanaMurcia E-30850Spain Laboratorio de Biodiversidad y Funcionamiento Ecosistemico Instituto de Recursos Naturales y Agrobiologia de Sevilla(IRNAS)CSICAv.Reina Mercedes 10Sevilla E-41012Spain IRNAS-CSIC Unidad Asociada Universidad Pablo de OlavideUniversidad Pablo de Olavide(UPO)Sevilla 41013Spain Centre for Research and development in Agrifood Systems and Sustainability(CISAS) Instituto Politecnico de Viana do Castelo(IPVC)Rua Escola Industrial e Comercial Nun'Alvares 34Viana do Castelo 4900-347Portugal

Phosphorus(P) limitation in the coming decades calls for the utilization of alternative fertilizers in agriculture. Struvite is a promising P source, but its potential role as a fertilizer is dependent on different physical, chemical, and biological properties, which are very heterogeneous in soil, complicating the prediction of the best soil conditions for its application. Here, we evaluated the solubility of struvite in soil, its redistribution into P fractions, and its potential abiotic and biotic drivers in 62 globally distributed soils with contrasting properties through an incubation assay. We found that after 40 d, about 35% of struvite P was redistributed into soil fractions more accessible to plants and microbes. Phosphorus redistribution from struvite was driven by a complex suite of soil physical, chemical, and microbial properties as well as environmental factors that varied across soils. Soil texture played a critical role in determining the redistribution of P in struvite-amended soils in soluble(H2O extraction), labile(NaHCO3 extraction), and moderately labile(NaOH extraction) fractions.In addition, the soil solution cation concentration was one of the most important drivers of available struvite-derived P fractions. The great importance of texture and cations in determining struvite-derived P fractions in soil was contrasted with the relatively minor role of pH. At the microbial level, the number of bacterial operational taxonomic units(OTUs) from the unfertilized soils that correlated with struvite-derived P fractions was higher than that of fungi. The number of OTUs that correlated with the struvite-derived soluble P fraction was dominated by fungi, whereas the number of OTUs that correlated with the struvite-derived labile P fraction was dominated by bacteria. Overall, this study provided a predictive framework for the potential use of struvite as a P fertilizer in contrasting soils.

关键词： bacteria fungi environmental factor operational taxonomic unit phosphorus fertilizer phosphorus fraction phosphorus solubilization soil fertility soil property

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Assisted Natural Remediation of a Trace Element-Contaminated Acid Soil:An Eight-year Field Study

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Pedosphere 2015年第2期25卷 250-262页

作者： Jian XIONG Paula MAdeJON Engracia MAdeJON Francisco CABRERA Instituto de recursos Naturales y Agrobiologia de SevillaIRNAS CSICAvenida Reina Mercedes10P.O.Box 1052Seville 41080 Spain

There are many remediation techniques for organic contaminated soils,but relatively few of them are applicable to trace elementcontaminated soils.A field experiment was carried out to investigate assisted natural remediation(ANR) of an acid soil contaminated by As,Cd,Cu,Zn and Pb using one inorganic amendment,sugar beet lime(SL),and two organic amendments,biosolid compost(BC)and leonardeite(LE).The experiment was arranged in a completely randomized block design with four treatments in three replicates:1) a non-amended control(NA);2) SL amended at 30 Mg ha^(-1) year^(-1);3) BC amended at 30 Mg ha^(-1) year^(-1) and 4) LE amended at 20 Mg ha^(-1) year^(-1) plus SL amended at 10 Mg ha^(-1) year^(-1)(LESL).The amended plots received two doses of each amendment(DO2):one in October 2002 and another in October 2003.The plots were then divided in half into two subpolts and one subplot received another two doses of the same amendments(DO4) in October 2005 and October 2006.In 2011,the pH values of the amended soils were greater than that of the NA soil,with the SL-amended soil showing the highest pH.Total organic carbon(TOC) was also greater in the amended soil,and greater with DO4 than with DO2.Amendments reduced the concentrations of 0.01 mol L^(-1) CaCl_2-extractable Cd,Cu and Zn,especially in the SL-amended soil.Plant cover of colonizing vegetation was enhanced by amendments,but was independent of amendment doses.Changes in soil properties from 2003 to 2011 showed that the first amendment application of DO2 caused a high differentiation between all the amendment treatments and the NA treatment.After the second application of DO2,soil pH and TOC continued increasing slowly.Further two applications of amendments(DO4) caused differences only in the organic treatments.Plant cover increased over time in all the treatments including NA.It could be concluded that the slow and steady natural remediation of this soil could be enhanced by amendment application(ANR).

关键词：酸性土壤修复技术微量元素有机污染自然土壤pH值应用程序随机区组设计

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