15 research outputs found

    Influence of Landscape Structure and Human Modifications on Insect Biomass and Bat Foraging Activity in an Urban Landscape

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    Urban landscapes are often located in biologically diverse, productive regions. As such, urbanization may have dramatic consequences for this diversity, largely due to changes in the structure and function of urban communities. We examined the influence of landscape productivity (indexed by geology), housing density and vegetation clearing on the spatial distribution of nocturnal insect biomass and the foraging activity of insectivorous bats in the urban landscape of Sydney, Australia. Nocturnal insect biomass (g) and bat foraging activity were sampled from 113 sites representing backyard, open space, bushland and riparian landscape elements, across urban, suburban and vegetated landscapes within 60 km of Sydney's Central Business District. We found that insect biomass was at least an order of magnitude greater within suburban landscapes in bushland and backyard elements located on the most fertile shale influenced geologies (both p<0.001) compared to nutrient poor sandstone landscapes. Similarly, the feeding activity of bats was greatest in bushland, and riparian elements within suburbs on fertile geologies (p = 0.039). Regression tree analysis indicated that the same three variables explained the major proportion of the variation in insect biomass and bat foraging activity. These were ambient temperature (positive), housing density (negative) and the percent of fertile shale geologies (positive) in the landscape; however variation in insect biomass did not directly explain bat foraging activity. We suggest that prey may be unavailable to bats in highly urbanized areas if these areas are avoided by many species, suggesting that reduced feeding activity may reflect under-use of urban habitats by bats. Restoration activities to improve ecological function and maintain the activity of a diversity of bat species should focus on maintaining and restoring bushland and riparian habitat, particularly in areas with fertile geology as these were key bat foraging habitats

    Risk factors for recurrence of deep infiltrating endometriosis after surgical treatment

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    Aim: To evaluate the frequency of complications and factors associated with the recurrence of endometriosis in women with deep infiltrating endometriosis (DIE) undergoing surgical treatment. Methods: A retrospective observational cohort study with 72 women who underwent surgery and followed up by DIE at the University of Campinas from 2007 to 2017. The variables analyzed were clinical characteristics, use and type of drug treatment before and after surgery, operative time and complications inherent to the procedure, as well as the recurrence of lesions on imaging. Results: The mean age of women was 39.7 ± 6.3 years and the mean follow-up was 4.56 ± 2.60 years. Complications were reported in 16.6% of surgeries and recurrence of lesions in 34.7%. The risk of intraoperative complications was higher in the presence of lesions of the bowel and in those who used intramuscular progestin before surgery. A higher risk of recurrence was observed among those who did not use hormonal treatment or used a levonorgestrel-releasing intrauterine device (LNG-IUD) in the postoperative period. Conclusion: Women with DIE have a high rate of complications during surgical treatment and a higher risk of recurrence when they did not receive hormonal treatment or when treated with LNG-IUD after surgery

    COMPARATIVE STUDY OF TRANSVAGINAL SONOGRAPHY AND OUTPATIENT HYSTEROSCOPY FOR DETECTION OF PATHOLOGIC ENDOMETRIAL LESIONS IN POSTMENOPAUSAL WOMEN.

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    OBJECTIVE. To compare the efficiency of transvaginal sonography and outpatient hysteroscopy in the diagnosis of intrauterine pathology in postmenopausal women. METHODS. Two-hundred and forty-three postmenopausal women were selected. All women had undergone outpatient hysteroscopy in the year 2006. These women were referred from the Basic Healthcare Units in Campinas, where they underwent ultrasonography for the evaluation of the endometrial cavity. RESULTS. The mean age of these women was 61 +/- 9.4 years, These women were menopausal for 11 +/- 8.3 years.. We observed 6.6% cases of endometrial hyperplasia and cancer The ultrasonography had a sensitivy of 95.6%, a specificity of 7.4%, a positive predictive value of 53.3% and a negative predictive value of 60%, while the hysteroscopy had 95.7%, 83%, 82.2% and 95.9% respectively. CONCLUSION. Hysteroscopy was a more accurate method for the detection of intrauterine pathology than ultrasonography. [Rev Assoc Med Bras 2009; 55(5): 553-6]55555355

    Moth species richness, abundance and diversity in fragmented urban woodlands: implications for conservation and management strategies

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    Urban expansion threatens global biodiversity through the destruction of natural and semi-natural habitats and increased levels of disturbance. Whilst woodlands in urban areas may reduce the impact of urbanisation on biodiversity, they are often subject to under or over-management and consist of small, fragmented patches which may be isolated. Effective management strategies for urban woodland require an understanding of the ecology and habitat requirements of all relevant taxa. Yet, little is known of how invertebrate, and in particular moth, assemblages utilise urban woodland despite being commonly found within the urban landscape. Here we show that the abundance, species richness, and species diversity of moth assemblages found within urban woodlands are determined by woodland vegetation character, patch configuration and the surrounding landscape. In general, mature broadleaved woodlands supported the highest abundance and diversity of moths. Large compact woodlands with proportionally less edge exposed to the surrounding matrix were associated with higher moth abundance than small complex woodlands. Woodland vegetation characteristics were more important than the surrounding landscape, suggesting that management at a local scale to ensure provision of good quality habitat may be relatively more important for moth populations than improving habitat connectivity across the urban matrix. Our results show that the planting of broadleaved woodlands, retaining mature trees and minimising woodland fragmentation will be beneficial for moth assemblages. © 2014 Springer Science+Business Media Dordrecht
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