An ecological survey of the royal Karnali-Bardia Wildlife Reserve, Nepal. Part I: Vegetation, modifying factors, and successional relationships

1979 ◽  
Vol 15 (2) ◽  
pp. 127-150 ◽  
Author(s):  
Eric Dinerstein
Keyword(s):  
Ecological Survey ◽  
Modifying Factors ◽  
Wildlife Reserve

BIOASSAY CHARACTERISTICS OF INDIVIDUAL URINARY GONADOTROPHIN EXTRACTS

1963 ◽  
Vol 42 (2) ◽  
pp. 214-224
Author(s):  
Raymond C. Mellinger ◽  
Jalileh A. Mansour ◽  
Richmond W. Smith
Keyword(s):  
Reference Material ◽  
Young Women ◽  
Reference Standard ◽  
General Acceptance ◽  
Modifying Factors ◽  
Large Numbers ◽  
The World ◽  
Quantitative Bioassay ◽  
Different Parts ◽  
Age And Sex

ABSTRACT A reference standard is widely sought for use in the quantitative bioassay of pituitary gonadotrophin recovered from urine. The biologic similarity of pooled urinary extracts obtained from large numbers of subjects, utilizing groups of different age and sex, preparing and assaying the materials by varying techniques in different parts of the world, has lead to a general acceptance of such preparations as international gonadotrophin reference standards. In the present study, however, the extract of pooled urine from a small number of young women is shown to produce a significantly different bioassay response from that of the reference materials. Gonadotrophins of individual subjects likewise varied from the multiple subject standards in many instances. The cause of these differences is thought to be due to the modifying influence of non-hormonal substances extracted from urine with the gonadotrophin and not necessarily to variations in the gonadotrophins themselves. Such modifying factors might have similar effects in a comparative assay of pooled extracts contributed by many subjects, but produce significant variations when material from individual subjects is compared. It is concluded that the expression of potency of a gonadotrophic extract in terms of pooled reference material to which it is not essentially similar may diminish rather than enhance the validity of the assay.

scholarly journals Hope for the survival of the Critically Endangered white-naped mangabey Cercocebus atys lunulatus: a new primate species for Burkina Faso

Oryx ◽  
2006 ◽  
Vol 40 (3) ◽  
pp. 355-357 ◽  
Author(s):  
Gérard Galat ◽  
Anh Galat-Luong
Keyword(s):  
Burkina Faso ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Primate Species ◽  
Sooty Mangabey ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
The Status ◽  
Cercocebus Atys ◽  
Wildlife Reserve

From 2003 to 2005 we carried out surveys in Burkina Faso to investigate the status of primate taxa. In the south-west near the border with Côte d'Ivoire we discovered sooty mangabey Cercocebus atys, a primate species that had not been previously reported in the country. This population is the subspecies C. a. lunulatus, the white-naped mangabey, one of the 25 most threatened primate taxa. As the subspecies occurs in a gallery forest that is next to a wildlife safari hunting area, we recommend that hunting is prohibited near these forests. The recent creation of the Warigué protected area, linking the Comoé-Léraba Reserved Forest and Partial Wildlife Reserve in Burkina Faso where we observed the subspecies, with the Comoé National Park in Côte d'Ivoire, could make an important contribution to the survival of this, the northernmost population, of the subspecies.

scholarly journals Relationship between trajectories of post-stroke disability and self-rated health (NeuroAdapt): protocol for a prospective observational study

BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e049944
Author(s):  
Sarah K Schäfer ◽  
Robert Fleischmann ◽  
Bettina von Sarnowski ◽  
Dominic Bläsing ◽  
Agnes Flöel ◽  
...  
Keyword(s):  
Observational Study ◽  
Prospective Observational Study ◽  
Tertiary Care ◽  
Functional Health ◽  
Care Hospital ◽  
Duration Of Symptoms ◽  
Post Stroke ◽  
Self Rated Health ◽  
Modifying Factors ◽  
Study Results

IntroductionStroke is the leading neurological cause of adult long-term disability in Europe. Even though functional consequences directly related to neurological impairment are well studied, post-stroke trajectories of functional health according to the International Classification of Functioning, Disability and Health are poorly understood. Particularly, no study investigated the relationship between post-stroke trajectories of activities of daily living (ADL) and self-rated health (SRH). However, such knowledge is of major importance to identify patients at risk of unfavourable courses. This prospective observational study aims to investigate trajectories of ADL and SRH, and their modifying factors in the course of the first year after stroke.Methods and analysisThe study will consecutively enrol 300 patients admitted to a tertiary care hospital with acute ischaemic stroke or transient ischaemic attack (TIA; Age, Blood Pressure, Clinical Features, Duration of symptoms, Diabetes score ≥3). Patient inclusion is planned from May 2021 to September 2022. All participants will complete an interview assessing ADL, SRH, mental health, views on ageing and resilience-related concepts. Participants will be interviewed face-to-face 1–5 days post-stroke/TIA in the hospital; and will be followed up after 6 weeks, 3 months, 6 months and 12 months via telephone. The 12-month follow-up will also include a neurological assessment. Primary endpoints are ADL operationalised by modified Rankin Scale scores and SRH. Secondary outcomes are further measures of ADL, functional health, physical activity, falls and fatigue. Views on ageing, social support, resilience-related concepts, affect, frailty, illness perceptions and loneliness will be examined as modifying factors. Analyses will investigate the bidirectional relationship between SRH and ADL using bivariate latent change score models.Ethics and disseminationThe study has been approved by the institutional review board of the University Medicine Greifswald (Ref. BB 237/20). The results will be disseminated through scientific publications, conferences and media. Moreover, study results and potential implications will be discussed with patient representatives.Trial registration numberNCT04704635.

Preliminary Ecological Survey of the Island of Hawaii

Ecology ◽  
1940 ◽  
Vol 21 (2) ◽  
pp. 273
Author(s):  
Constance E. Hartt ◽  
W. Robyns ◽  
S. H. Lamb
Keyword(s):  
Ecological Survey

scholarly journals A reconstruction of the recent fire regimes of Majete Wildlife Reserve, Malawi, using remote sensing

Fire Ecology ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Willem A. Nieman ◽  
Brian W. van Wilgen ◽  
Alison J. Leslie
Keyword(s):  
Remote Sensing ◽  
Fire Management ◽  
Fire Regime ◽  
Fire Regimes ◽  
Dry Season ◽  
Annual Rainfall ◽  
Vegetation Types ◽  
Local Evidence ◽  
Hot Dry Season ◽  
Wildlife Reserve

Abstract Background Fire is an important process that shapes the structure and functioning of African savanna ecosystems, and managers of savanna protected areas use fire to achieve ecosystem goals. Developing appropriate fire management policies should be based on an understanding of the determinants, features, and effects of prevailing fire regimes, but this information is rarely available. In this study, we report on the use of remote sensing to develop a spatially explicit dataset on past fire regimes in Majete Wildlife Reserve, Malawi, between 2001 and 2019. Moderate Resolution Imaging Spectroradiometer (MODIS) images were used to evaluate the recent fire regime for two distinct vegetation types in Majete Wildlife Reserve, namely savanna and miombo. Additionally, a comparison was made between MODIS and Visible Infrared Imager Radiometer Suite (VIIRS) images by separately evaluating selected aspects of the fire regime between 2012 and 2019. Results Mean fire return intervals were four and six years for miombo and savanna vegetation, respectively, but the distribution of fire return intervals was skewed, with a large proportion of the area burning annually or biennially, and a smaller proportion experiencing much longer fire return intervals. Variation in inter-annual rainfall also resulted in longer fire return intervals during cycles of below-average rainfall. Fires were concentrated in the hot-dry season despite a management intent to restrict burning to the cool-dry season. Mean fire intensities were generally low, but many individual fires had intensities of 14 to 18 times higher than the mean, especially in the hot-dry season. The VIIRS sensors detected many fires that were overlooked by the MODIS sensors, as images were collected at a finer scale. Conclusions Remote sensing has provided a useful basis for reconstructing the recent fire regime of Majete Wildlife Reserve, and has highlighted a current mismatch between intended fire management goals and actual trends. Managers should re-evaluate fire policies based on our findings, setting clearly defined targets for the different vegetation types and introducing flexibility to accommodate natural variation in rainfall cycles. Local evidence of the links between fires and ecological outcomes will require further research to improve fire planning.

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