المؤلفون: Yushuo Zhang, Xin He, Xiuhong Mo, Hong Wu, Dapeng Zhao

المصدر: PeerJ, Vol 12, p e16979 (2024)

مصطلحات موضوعية: Phasianidae, Environmental differences, Gut microbiota, Diet, 16S rDNA, Medicine, Biology (General), QH301-705.5

الوصف: The fecal microbiota plays an important role in maintaining animal health and is closely related to host life activities. In recent years, there have been an increasing number of studies on the fecal microbiota from birds. An exploration of the effects of species and living environments on the composition of gut microbiota will provide better protection for wildlife. In this study, non-injury sampling and 16S rDNA high-throughput sequencing were used to investigate the bacterial composition and diversity of the fecal microbiota in silver pheasants (Lophura nycthemera) and golden pheasants (Chrysolophus pictus) from Tianjin Zoo and Beijing Wildlife Park. The results showed that the abundance of Firmicutes was the highest in all fecal samples. At the genus level, Bacteroides was the common dominant bacteria, while there were some differences in other dominant bacteria genera. There were significant differences in fecal microbial composition between the golden pheasants from Tianjin Zoo and Beijing Wildlife Park. The metabolic analysis and functional prediction suggested that the gut microbiota composition and host metabolism were influenced by dietary interventions and living conditions. The results of this study provide the basis for further research of intestinal microbial of L. nycthemera and C. pictus, and valuable insights for conservation of related species.

وصف الملف: electronic resource

العلاقة: https://peerj.com/articles/16979.pdfTest; https://peerj.com/articles/16979Test/; https://doaj.org/toc/2167-8359Test

الوصول الحر: https://doaj.org/article/208c75072a114cc49f4468cf0dc6faa5Test

المؤلفون: Mette Dam Madsen, Naomi Duijvesteijn, Julius van der Werf, Sam Clark

مصطلحات موضوعية: Medicine, Genetics, Evolutionary Biology, Ecology, Plant Biology, Space Science, Environmental Sciences not elsewhere classified, also occur due, growing broiler chickens, estimated breeding values, genetic environmental sensitivity, environment interactions across, commercial production conditions, variable crossbred progeny, crossbred chickens reared, 01 ), variable progeny, crossbred chickens, production animals, environment interactions, chickens reared, genetic variances, genetic correlations, crossbred genotypes, crossbred animals, environmental differences, purebred chickens, sires based, results show

الوقت: 0

الوصف: Additional file 1. Simulation study of the impacts of mixed full- and half-sib data in sire models. Methods used to conduct the simulation study examining the impact of having mixed full- and half-sib data in sire models and the results of this simulation study in Tables S1 and S2. Table S1. Estimated additive genetic variance from the analysis of simulated datasets with varying mating ratio (standard error of the mean across 100 replicates) on the level of the model and converted to the animal level assuming the additive genetic sire variance is 0.25 of the additive genetic variance or using the average relationship of sire progeny groups. Table S2. Estimated additive genetic variance of micro-GES from the analysis of simulated datasets with varying mating ratio (standard error of the mean across 100 replicates) on the level of the model and converted to the animal level assuming the additive genetic sire variance is 0.25 of the additive genetic variance or using the actual relationship of sire progeny groups.

العلاقة: https://figshare.com/articles/journal_contribution/Additional_file_1_of_Micro-genetic_environmental_sensitivity_across_macro-environments_of_chickens_reared_in_Burkina_Faso_and_France/24709026Test

الإتاحة: https://doi.org/10.6084/m9.figshare.24709026.v1Test
https://figshare.com/articles/journal_contribution/Additional_file_1_of_Micro-genetic_environmental_sensitivity_across_macro-environments_of_chickens_reared_in_Burkina_Faso_and_France/24709026Test

المؤلفون: Belardi, Juan Bautista, Espinosa, Silvana Laura, Carballo Marina, Flavia, De Angelis, Hernán

المصدر: Arqueología; Vol. 29 Núm. 2 (2023): mayo-agosto; 11742 ; Arqueología; Vol 29 No 2 (2023): May-August; 11742 ; 1853-8126 ; 0327-5159

مصطلحات موضوعية: Patagonia, Lithic technology, Environmental differences, Tecnología lítica, Diferencias ambientales

الوصف: Desde un acercamiento morfológico, tecnológico y de análisis funcional se analizan conjuntos de hojas y subproductos de su manufactura (lascas de módulo laminar, chunks, núcleos y artefactos formatizados) recuperados en la margen norte del lago Viedma. Las muestras artefactuales provienen de distintos contextos arqueológicos de sectores altitudinales de la estepa (Costa-campos de invernada, ≤ 400 m s.n.m., Pampas Intermedias y Meseta del Tobiano ≥ 900 m s.n.m.) asociados con cronologías del Holoceno tardío. Las mayores frecuencias de evidencias de la talla y descarte, además de la integridad, la composición artefactual de las muestras y la alta disponibilidad de nódulos de basalto de dimensiones y calidades aptas para la talla, muestran la manufactura y el uso inmediato de hojas en el marco de estrategias expeditivas en espacios residenciales en la Costa. El uso de las hojas, eficaces para realizar tareas de corte, se vincularía con el procesamiento integral del guanaco. Así, los conjuntos de hojas de la Costa sustentan una marcada diferencia en el uso cazador-recolector de la margen norte del lago Viedma. Se propone que la producción de hojas tiene una manifestación suprarregional compartida por espacios de las costas de los lagos Tar y Argentino, ubicados al norte y al sur del lago Viedma, respectivamente. Las características de los contextos arqueológicos donde aparecen las mayores frecuencias de hojas explicarían la utilización de esta tecnología contra un telón de fondo provisto por la tecnología de lascas. ; Using a morphological, technological, and use-wear analysis approach, we study assemblages of blades and by-products of their manufacture (laminar flakes, chunks, cores, and tools) recovered on Viedma lake northern shore. The artifactual samples come from different archaeological contexts of altitudinal sectors of the steppe (Coast —wintering fields, ≤ 400 m asl—, Intermediate Pampas and Tobiano Plateau ≥ 900 m asl) related to Late Holocene chronologies. The higher frequencies of flintknapping and ...

وصف الملف: application/pdf

العلاقة: http://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/11742/11344Test; http://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/11742Test

الإتاحة: https://doi.org/10.34096/arqueologia.t29.n2.11742Test
http://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/11742Test

المؤلفون: Haobo Shi (14305131), Qingdong Shi (7063277), Hao Li (31608), Xiaolong Zhou (4068091), Yue Dai (287672), Yasenjiang Kahaer (14305134), Yanbo Wan (14305137), Lei Peng (260321)

مصطلحات موضوعية: Ecology, Marine Biology, Inorganic Chemistry, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, soil organic matter, rational ecological recovery, promoting vegetation restoration, prescribing conservation measures, multiple environmental pressures, establishing three types, environmental heterogeneity reveals, dominant factor driving, species nestedness pattern, particular environmental gradient, groundwater mutually drive, low surface water, beta diversity patterns, beta diversity pattern, species turnover pattern, community species composition, groundwater depth dominated, soil environmental differences, desert oasis communities, groundwater depth gradients, surface water disturbance, surface water, beta diversity, species turnover

الوصف: (PDF)

العلاقة: https://figshare.com/articles/journal_contribution/Phylogenetic_characteristics_of_oasis_communities_in_the_desert_hinterland_/21783981Test

الإتاحة: https://doi.org/10.1371/journal.pone.0279704.s003Test

المؤلفون: Haobo Shi (14305131), Qingdong Shi (7063277), Hao Li (31608), Xiaolong Zhou (4068091), Yue Dai (287672), Yasenjiang Kahaer (14305134), Yanbo Wan (14305137), Lei Peng (260321)

مصطلحات موضوعية: Ecology, Marine Biology, Inorganic Chemistry, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, soil organic matter, rational ecological recovery, promoting vegetation restoration, prescribing conservation measures, multiple environmental pressures, establishing three types, environmental heterogeneity reveals, dominant factor driving, species nestedness pattern, particular environmental gradient, groundwater mutually drive, low surface water, beta diversity patterns, beta diversity pattern, species turnover pattern, community species composition, groundwater depth dominated, soil environmental differences, desert oasis communities, groundwater depth gradients, surface water disturbance, surface water, beta diversity, species turnover

الوصف: (PDF)

العلاقة: https://figshare.com/articles/journal_contribution/Coordinates_of_the_19_sample_plots_/21783978Test

الإتاحة: https://doi.org/10.1371/journal.pone.0279704.s002Test

المؤلفون: Oliveira, Joao

مصطلحات موضوعية: 658.8, Firm, Export venture, Marketing adaptation across ventures, Marketing adaptation quantity, Export environmental differences, Export sales performance, Export profit performance

الوصف: Identifying the antecedents of export performance is critical for researchers, due to the many benefits of exporting for firms and nations. Many researchers have, thus, devoted their research efforts to identifying export performance antecedents. Export marketing adaptation and firm level export market orientation (or EMO) have emerged as two critical export performance predictors. However, two important research questions remain unexamined. The first is whether firms ought to pursue heterogeneous levels of marketing adaptation across ventures in order to boost venture performance, and whether the answer to this question is contingent upon internal firm resources which support adaptation (namely EMO) and upon the environments faced across ventures. The second question concerns what the total amount (i.e. quantity) of export marketing adaptation firms should undertake in order to boost firm export performance is, and whether the answer to this question depends on internal firm resources supporting adaptation (more specifically, EMO) and on the overall export environments faced by firms. Underpinned by a contingent approach to the study of business performance, this study set out to answer to such questions, via developing and testing two conceptual models. The models were tested using data collected from British exporting companies. The findings of the first model indicate that marketing adaptation across ventures becomes increasingly beneficial for venture performance (directly in the case of sales performance and indirectly in the case of profit performance) as EMO rises and as the levels of environmental differences across ventures increase. Results of the second model suggest that, under greater levels of EMO, firm export sales performance attains its highest values when the firm practices either very low or very high levels of marketing adaptation quantity. Also, under greater levels of EMO, firm export sales performance is increasingly reduced the more the firm deviates from extreme (low/high) marketing adaptation quantities. Additionally, as the firm s export environments become more heterogeneous, the firm benefits increasingly more from pursuing either very low or very high marketing adaptation quantity levels (with sales performance being maximized when the firm pursues very high levels of marketing adaptation quantity), and the reductions in firm export sales performance accruing from undertaking intermediate marleting adaptation quantity levels are increasingly higher. Findings also suggest that enhancing marketing adaptation quantity is beneficial for firm export profit performance up to an optimal point. The returns brought by additional increments in marketing adaptation quantity are increasingly smaller as marketing adaptation quantity increases. Beyond an optimal point, additional increments in marketing adaptation quantity diminish firm export profit performance. The marketing adaptation quantity-firm export profit performance link was not found to be moderated directly neither by EMO nor by firm export environmental differences. EMO was found to have a positive impact on firm export sales and profit performance.

الوصول الحر: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.647334Test

المؤلفون: Rios, Evelyn, Álvarez-Castañeda, Sergio Ticul

المصدر: Journal of Mammalogy, 2007 Aug 01. 88(4), 926-934.

الوصول الحر: https://www.jstor.org/stable/4498737Test

المؤلفون: Kunpeng Wang, Minghao Ou, Zinabu Wolde

المصدر: International Journal of Environmental Research and Public Health; Volume 17; Issue 21; Pages: 8242

مصطلحات موضوعية: cultivated land protection, ecological compensation, Profitable Spatial Boundary Model (PSBM), external environmental differences, China

جغرافية الموضوع: agris

الوصف: Exploring the elements that affect farmers’ willingness to protect cultivated land is the key to improving the ecological compensation mechanism for cultivated land protection. The purpose of this study was to analyze regional differences in ecological compensation for cultivated land protection, and to explore the influence of different external environments on farmers’ willingness to engage in cultivated land protection. Based on the Profitable Spatial Boundary Analysis theory (PSBA), GIS spatial analysis technology was used to analyze regional space differences and assess ecological compensation for urban and rural cultivated land protection at the micro scale. The results show that the willingness of farmers to participate in cultivated land protection is affected by the external environment and the ecological compensation offered. The trend of the comprehensive benefit of cultivated land protection ecological compensation (B) is “Λ” from the first layer to the third layer. The B value of the urban–rural junction area is the highest value. This shows that the external environment is favorable for ecological compensation in this area, which has a positive effect on farmers’ willingness to protect cultivated land. B < 0 in the first and third layer, which has a depressant effect on farmers’ willingness to protect cultivated land. The study results contribute to the understanding of the impact of regional differences in the external environmental on ecological compensation and farmers’ willingness to engage in cultivated land protection.

وصف الملف: application/pdf

العلاقة: https://dx.doi.org/10.3390/ijerph17218242Test

الإتاحة: https://doi.org/10.3390/ijerph17218242Test

المؤلفون: Małgorzata Krzywinska-Wiewiorowska, Barbara Stawińska-Witoszyńska, Alicja Krzyżaniak, Maria Kaczmarek, Aldona Siwinska

المصدر: Annals of Agricultural and Environmental Medicine, Vol 24, Iss 1, Pp 129-133 (2017)

مصطلحات موضوعية: environmental differences, adolescents, arterial blood pressure, Agriculture, Environmental sciences, GE1-350

الوصف: Introduction Despite considerable progress in diagnostic methods and treatment options, cardiovascular diseases constitute a serious health issue in Poland, and hypertension is considered one of the main risk factors in the incidence of the diseases. Objectives The aim of this study is to assess the values of arterial blood pressure among adolescents in the context of urban and rural environments. Material and Methods The study was carried out on a representative, randomly selected group of youths aged 10–18 years, participating in the ADOPOLNOR project. Prior to blood pressure measurement, each pupil was assessed according to anthropomorphic principles. The BP measurements strictly followed the guidelines of the Fourth Protocol of the American Working Group of High Blood pressure in Children and Adolescents. Results Mean values of systolic blood pressure (SBP) in boys in rural areas were higher in every age group than in the boys in urban areas. Higher values of systolic and diastolic blood pressure were observed also in girls in rural areas. BP values sufficiently high for the diagnosis of hypertension were observed in 12.8% of the rural boy population but only in 6.7% of the boys from the urban environment. The difference is statistically significant. The girls in rural areas (13.3%) had twice the incidence of elevated BP values in comparison with the girls in urban areas (7.2%) and, as in boys, the difference is statistically significant. Conclusions The high proportion of pupils with elevated arterial blood pressure observed in the rural areas of Wielkopolska calls for regularly performed BP assessment and monitoring in this populatio

وصف الملف: electronic resource

العلاقة: http://www.journalssystem.com/aaemTest/Environmental-variation-in-the-prevalence-of-hypertension-in-children-and-adolescents-is-blood-pressure-higher-in-children-and-adolescents-living-in-rural-areas-,72622,0,2.html; https://doaj.org/toc/1232-1966Test; https://doaj.org/toc/1898-2263Test

الوصول الحر: https://doaj.org/article/6ba0f539527543eba4231f343b92e849Test

المؤلفون: Gabriela Calegario, Lucas Freitas, Eidy Santos, Bruno Silva, Louisi Oliveira, Gizele Garcia, Cláudia Omachi, Renato Pereira, Cristiane Thompson, Fabiano Thompson

المصدر: PeerJ, Vol 7, p e6469 (2019)

مصطلحات موضوعية: Environmental differences, Population genetics, Photosynthesis, Phylogenetics, Proteomics, Rhodophyta, Medicine, Biology (General), QH301-705.5

الوصف: The genus Plocamium encompasses seaweeds that are widely distributed throughout the world’s oceans, with Plocamium brasiliense found along the tropical and subtropical coasts of the Western Atlantic. This wide distribution can lead to structured populations due to environmental differences (e.g., light levels or temperature), restricted gene flow, and the presence of cryptic species. Abiotic variation can also affect gene expression, which consequently leads to differences in the seaweeds protein profile. This study aimed to analyze the genetic and proteomic profiles of P. brasiliense sampled in two geographically distinct sites on the coastline of Rio de Janeiro state, Brazil: Arraial do Cabo (P1) and Búzios (P2). The genetic profiles of macroalgal specimens from these two sites were indistinguishable as assessed by the markers UPA/23S, rbcL, and COI-5P; however, the protein profiles varied significantly between populations from the two sites. At both sites the ribulose-1,5-biphosphate carboxylase/oxygenase was the most abundant protein found in P. brasiliense specimens. The number of phycobiliproteins differed between both sites with the highest numbers being found at P1, possibly due to water depth. The differences in proteomic profiles of the two nearly identical populations of P. brasiliense suggest that environmental parameters such as light availability and desiccation might induce distinct protein expression, probably as a result of the phenotypic plasticity within this population of seaweed.

وصف الملف: electronic resource

العلاقة: https://peerj.com/articles/6469.pdfTest; https://peerj.com/articles/6469Test/; https://doaj.org/toc/2167-8359Test

الوصول الحر: https://doaj.org/article/536b823a223d4542a62cd660a1bae847Test