ABSTRACT
Abstract Increasing urbanisation is widely associated with decline in biodiversity of all forms. The aim of the present study was to answer two questions: (i) Does rapid urbanization in Delhi (India) affect biodiversity of arbuscular mycorrhizal (AM) fungi? (ii) If so, how? We measured the AM fungal diversity at nine sites located in Delhi forests, which had different types of urban usage in terms of heavy vehicular traffic pollution, littering, defecation and recreational activities. The study revealed a significant decrease in AM fungal diversity (alpha diversity) and abundance measured as spore density, biovolume, mean infection percentage (MIP) in roots, soil hyphal length and easily extractable glomalin related soluble proteins (EE-GRSP) at polluted sites. Non-metric multidimensional scaling (NMDS) and nested PERMANOVA, revealed significant differences in AM fungal community structure which could be correlated with variations in soil moisture, temperature, pH, carbon, and nitrogen and phosphorus levels. BEST (biota and environmental matching) analysis of biological and environmental samples revealed that soil temperature and moisture accounted for 47.6 % of the total variations in the samples. The study demonstrated how different forms of human activities in urban ecosystems of Delhi are detrimental to the diversity and abundance of AM fungi.(AU)
Resumen El incremento en la urbanización está ampliamente asociado con una disminución de la biodiversidad de todas las formas. El objetivo del presente estudio fue responder dos preguntas: (i) ¿Afecta la urbanización rápida en Delhi (India) la biodiversidad de hongos micorrízicos arbusculares (MA)?, y (ii) si es así, ¿Cómo? Medimos la diversidad de hongos MA en nueve sitios ubicados en los bosques de Delhi, los cuales tenían diferentes tipos de uso urbano en términos de contaminación por alto tráfico vehicular, basura, defecación y actividades recreacionales. El estudio reveló una disminución significativa en la diversidad de hongos MA (diversidad alfa) y abundancia medida como densidad de esporas, biovolumen, porcentaje medio de infección (PMI) en raíces, longitud de las hifas del suelo y glomalina fácilmente extraible relacionada con proteínas solubles (EE-GRSP) en sitios contaminados. Análisis de escalamiento multidimensional no métrico (NMDS) y PERMANOVA anidados revelaron diferencias significativas en la estructura de hongos MA, que puede estar relacionada con la variación en humedad, temperatura, pH y niveles de carbono, nitrógeno y fósforo del suelo. El análisis BEST (biota y correspondencia ambiental) de muestras biológicas y ambientales mostró que la temperatura y humedad del suelo explican un 47.6 % del total de la variación en las muestras. Este estudio demostró cómo las diferentes actividades humanas en ecosistemas urbanos de Delhi son perjudiciales para la diversidad y abundancia de hongos MA.(AU)
Subject(s)
Urbanization , Man-Made Disasters , Biodiversity , Fungi , IndiaABSTRACT
Background/Purpose:Purpose of this study was to evaluate the population characteristics of patients with both head injury and facial fractures in rural centre.Methods:This study was a retrospective study performed at Justice K.S. Hegde Charitable Hospital; Deralakatte (Mangalore) and a total of 36 patients were reviewed. Type of fracture; mechanism; clinical features and pattern of injuries were noted. All patients who sustained both cranial and facial injuries were included in this study.Results: Mean age was 32.64 years (range; 4 years to 70 years) with a male to female ratio of 35:1. Motor vehicular accidents (44.4) were most common cause of injury followed by fall (22.2). Most common areas involved were upper face (36.1) and lower face (25) followed by combination of upper and middle face (11.1) other areas were less commonly involved. Headache and vomiting were most common clinical features followed by loss of consciences. Closed head injuries were the most common neurological injury (14 cases) followed by skull fractures (5 cases). Most patients with upper facial fractures or combination of it had associated injuries. There was no mortality in the present series.Conclusion: This study further supports that injury patterns in developing countries particularly in rural area are no different from developed countries and needs to follow similar preventive and counseling measures