Search Results - "ecosystem"
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Infestation of Xyleborus volvulus (Fabricius) (Coleoptera: Curculionidae: Scolytinae) in Mangifera indica L. (Mangifera: Anacardiaceae) in Manzanillo, Colima
Published 2018“…Ambrosia beetles are a natural part of the wood decomposition processes in ecosystems; however, some exotic species can cause serious problems in economically important crops, or seriously threaten native plant species (Sobel et al. 2015). …”
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Developing Nutritional Models for Aquaculture: Integrating Existing Knowledge, Addressing Real Issues, and Setting Directions for Research
Published 2008“…The nutritional composition of fish feeds varies considerably which complicatescomparison of feed efficiency values amongst operations and even, to some extent, between production cycles.Wastes produced by fish culture operations are often difficult to contain and may, potentially, contribute toenvironmental degradation of fragile aquatic ecosystems.…”
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Hydroclimatic variations reveal differences in carbon capture in two concurrent conifers in northern Mexico
Published 2019“…Forest ecosystems are considered among the largest terrestrial carbon sinks. …”
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A global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions
Published 2021“…The threat posed by invasive non-native species worldwide requires a global approach to identify which introduced species are likely to pose an elevated risk of impact to native species and ecosystems. To inform policy, stakeholders and management decisions on global threats to aquatic ecosystems, 195 assessors representing 120 risk assessment areas across all six inhabited continents screened 819 non-native species from 15 groups of aquatic organisms (freshwater, brackish, marine plants and animals) using the Aquatic Species Invasiveness Screening Kit. …”
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Mapping of the atmospheric deposition of sulfur and nitrogen during the dry season 2016 in the Metropolitan zone of Merida, Yucatan, Mexico
Published 2018“…Both, sulfur and nitrogen atmospheric deposition fluxes were higher in urban sites, exceeding almost 2 times, the reference values proposed internationally for sensitive ecosystems. From the analysis of wind roses and air masses trajectories, it was possible to establish that during this climatic season, in addition to the local vehicular emissions, regional emissions generated upwind (from E-SE) contributed to atmospheric deposition of these ions. …”
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Nutritional role of natural productivity and formulated feed in semi‐intensive shrimp farming as indicated by natural stable isotopes
Published 2014“…The natural productivity of semi-intensively managed shrimp ponds is frequently represented by a diverse trophic structure that forms part of the diet of farmed organisms. As in natural ecosystems, these dietary components exhibit differing isotopic signatures that vary with diet and trophic level. …”
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Nutritional role of the natural productivity and formulated feed in semi-intensive shrimp farming as indicated by natural stable isotopes
Published 2014“…The natural productivity of semi-intensively managed shrimp ponds is frequently represented by a high variety of trophic elements that continuously supply nutrients to the farmed organisms. As in the natural ecosystems, these dietary components exhibit differing isotopic signatures at natural abundance levels and since these natural communities belong to different trophic positions and isotopic values of organisms tend to increase with trophic level, the isotopic differences can be measured and used to infer on the transfer of nutrients, hence allowing establishing relationships between consuming organisms and their diets. …”
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Caracterización de estructura de ecosistemas forestales en Durango, México
Published 2005“…Abstract A characterization of ecosystems in the Ejido the Victory, municipality of New Town, Durango. …”
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Caracterización de estructura de ecosistemas forestales en Durango, México
Published 2005“…Abstract A characterization of ecosystems in the Ejido the Victory, municipality of New Town, Durango. …”
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Contenido de nutrimentos minerales en la hojarasca de bosques de pino, encino y pino-encino durante el proceso de descomposición
Published 2019“…In the Oak forest, the transfer of nutrients to the soil was 14.75 mg g-1 for Ca; 2.45 mg g -1 Mg; 7.61 mg g-1 K, 7.53 μg g-1 Cu and 71,405 μg g-1 of Mn; the transfer in the Pino-Oak forest was 17.87 mg g-1 for Ca; 3.05 mg g-1 Mg; 6.7 mg g-1 K; 10 μg g1 Cu and 351.51 μg g-1 of Mn; As for Fe and Zn, increases in their content were observed in the three types of ecosystems, with the Oak forest recording the highest values; 1023.39 μg g-1 and 112.73 μg g-1 respectively. …”
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Foliar biomass production and litterfall pattern of five timber species in forest plantations of semi-arid lands of the northeastern Mexico
Published 2017“…Hypothesis: The litterfall represents an important way in maintaining the productivity of these ecosystems, and we hypothesized that its production pattern is related to the foliar biomass production, associated with seasons and species. …”
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Contenido de nutrimentos minerales en la hojarasca de bosques de pino, encino y pino-encino durante el proceso de descomposición
Published 2019“…In the Oak forest, the transfer of nutrients to the soil was 14.75 mg g-1 for Ca; 2.45 mg g -1 Mg; 7.61 mg g-1 K, 7.53 μg g-1 Cu and 71,405 μg g-1 of Mn; the transfer in the Pino-Oak forest was 17.87 mg g-1 for Ca; 3.05 mg g-1 Mg; 6.7 mg g-1 K; 10 μg g1 Cu and 351.51 μg g-1 of Mn; As for Fe and Zn, increases in their content were observed in the three types of ecosystems, with the Oak forest recording the highest values; 1023.39 μg g-1 and 112.73 μg g-1 respectively. …”
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Metal-Induced Production of a Novel Bioadsorbent Exopolysaccharide in a Native Rhodotorula mucilaginosa from the Mexican Northeastern Region
Published 2016“…Colorants discharged into natural water streams pose various threats, including: toxicity, degradation of aesthetics and inhibiting sunlight penetration into aquatic ecosystems. Dyes and colorants usually have complex aromatic molecular structures, which make them very stable and difficult to degrade and eliminate by conventional water treatment systems. …”
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