The boreal forest ecosystems have been changing due to varying levels of anthropogenic land use processes such as logging, oil and gas activities, and agriculture. However, the cumulative impacts of these processes are likely to lead to a lasting degradation of the boreal forest ecosystem; and thus, contributing to environmental change. In this study, methods from Landscape Ecology, GIS, and remote sensing were used to process Landsat images and spatial data for shale gas infrastructure. These datasets and methods were used for measuring and assessing the forest change pattern in a study area in northeastern British Columbia (BC). The results of the study show that gross loss (5.98%) of coniferous forest cover in the timber harvest land base (THLB) is higher than the rate of gross loss (3.22%) of the coniferous forest cover in the area outside the THLB. However, the rate of net loss in coniferous forest cover is smaller in the THLB than that of outside the THLB (net loss THLB=0.6%; net loss non-THLB=1.7%). These dynamics in forest cover suggest that it is more likely for forest cover to regenerate much faster in the THLB than outside the THLB. The quantity of forest cover loss (0.163%) from shale oil and gas well pads development is more than the amount of forest loss from shale oil and gas access roads (0.017%) and pipeline development (0.057%). A higher amount of forest fragmentation is associated with periods and locations that have a high amount of anthropogenic-induced land classes in the landscape. These results of the study could serve as the information for modelling land change and fragmentation in the future. The finding from this study could assist land managers in the allocation of land uses across space as well as the formulation of effective and efficient policy frameworks and management initiatives.
Androgen deprivation therapy (ADT) is a common method of treatment for prostate cancer. There are a variety of side effects associated with its use that can negatively impact health and quality of life, yet a significant gap exists in the literature around comprehensive screening recommendations. As a result, this project seeks to answer the question: For Nurse Practitioners (NPs) practicing in a primary care setting, what screening is required to identify side effects in men with prostate cancer receiving ADT? Eligibility criteria for this literature review included data related to ADT and men with prostate cancer, with no limitation to age or stage of disease. The majority of the participants in the primary studies included at least one study group receiving ADT in the primary care setting. This review presented findings based on the physical, cognitive and psychological side effects of ADT, followed by a description of clinical practice guidelines, clinical reviews and editorials in order to highlight the gaps in screening recommendations. Through this process, recommendations for the screening of each individual side effect were developed. It was determined that patients should undergo follow-up within 3 months of ADT initiation, followed by every 3-6 months. Limitations of this project include a scarcity of studies on specific side effects. Implications for practice include patient and primary care provider (PCP) education as well as the development of comprehensive guidelines. Moreover, further research is required for newly defined side effects. It is through appropriate careening that ADT related side effects are identified and treated, thus limited their impact on health and quality of life. --Leaf 2.
Oil was discovered in Nigeria in1956 at Oloibiri in the Niger Delta Region after almost 50 years of exploration. Shell-BP at that time, was the sole concessionaire because non-British companies were not given exploration license to operate in Nigeria. After Nigerian Independence in 1960, exploration rights were extended to other multinational oil companies. More than 16 multinational oil companies were in operation with little or no supervision from the Nigerian Government, which created significant environmental, political,and social impact in the region. A critical discourse analysis of documents from Shell, Amnesty International, THISDAY Newspaper revealed that the Nigerian government has failed to safeguard the environment and the lives of the people. On the basis of evidence presented on this research, in addition to literature, it can be argued that oil has turned out to be a curse to the Niger Delta Region and Nigeria in general.
Northeastern British Columbia (BC) is undergoing steady development for oil and gas extraction, mainly due to subsurface hydraulic fracturing (fracking), which requires significant quantities of water. Thus, it is of vital importance to obtain accurate long-term water balance information in the complex wetlands of northeastern BC to assist regulators to balance multiple priorities in a way that will not compromise the long-term sustainability of water resources, while minimizing ecological impacts. At the initial phase of this study, all fluxes of the Coles Lake water balance were measured for the 2013_2014 hydrological year. The total storage change was negative (-8.3 mm), and 2013_2014 was considered a relatively dry year. This study also quantifies the water balance fluxes within two boreal watersheds, the Coles Lake and Tsea Lake watersheds, through a combination of observational data analysis and numerical modelling using the MIKE SHE hydrological model for 1979_2014. MIKE SHE model calibration was performed manually based on snowmelt, pressure head, and streamflow, using a trial-and-error parameter adjustment procedure. Similar trends were observed for the Coles Lake and Tsea Lake watersheds although average of actual evapotranspiration (AET = 472.9 mm year-1) was higher while overland flow (OL = 26.3 mm year-1) was lower at the Coles Lake watershed compared to the Tsea Lake watershed (AET= 405.5 mm year-1 and OL = 48.5 mm year-1). Sensitivity simulations with the MIKE SHE model whereby the leaf area index was modified uniformly across the Coles Lake watershed to represent fully open, mixed and closed canopies provided further insights on the role of vegetation on the water balance. Simulated AET = 515, 529, and 558 mm year-1 and OL = 59, 46, and 11 mm year-1 for open, mixed, and closed canopies, respectively. Further, the Coles Lake forcing data were applied for the Tsea Lake watershed as a sensitivity test while other parameters remained unchanged. The variability of the vegetation canopies, and land cover including wetland distribution were the main contributors for different hydrological responses in these two watersheds. Baseline information generated by this study will support the assessment of the sustainability of current strategies for freshwater extraction.
