Essays about: "threat to Biosphere"

Found 5 essays containing the words threat to Biosphere.

  1. 1. Energy balance closure, water balance, carbon exchange, and water use efficiency : observed and modeled outcomes for a managed, hemiboreal forest in Southern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Linsey Marie Avila; [2019]
    Keywords : Energy balance; energy balance closure; energy balance ratio; net radiation; sensible heat; latent heat; turbulent fluxes; ground heat flux; energy storage; available energy; Bowen ratio; evaporative fraction; latent heat of vaporization; water balance; evapotranspiration; precipitation; water storage; water discharge; gross primary production; ecosystem respiration; net ecosystem production; carbon exchange; water use efficiency; Earth and Environmental Sciences;

    Abstract : The claims for the potential of boreal and sub-boreal forests to combat negative effects of climate change have been substantial with over half of Earth’s primary forests found within boreal and temperate regions of the Northern Hemisphere. Given the likely occurrence of more extreme climate events in the future, ascertaining a better understanding of how climate effects, such as profound fluctuations in precipitation, decreases in yearly snow, faster snow melt rates, variability in evapotranspiration due to environmental stress, and related changes in the energy, hydrological, and carbon cycles will change these northern, boreal landscapes is crucial. READ MORE

  2. 2. Degradation of Microplastic Residuals in Water by Visible Light Photocatalysis

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Tajkia Syeed Tofa; [2018]
    Keywords : Microplastics; Low density Polyethylene LDPE ; Heterogeneous photocatalytic degradation; Zinc oxide nanorods; Visible light.;

    Abstract : Microplastic (MP) pollution has recently been recognized as a threat to the biosphere including humans due to its widespread distribution, persistent nature and infinitesimal size. This study focused on the solid phase degradation of microplastic residues (particularly low density polyethylene, LDPE) in water through heterogeneous photocatalysis process by designed photocatalysts of zinc oxide nanorods (ZnO NRs) and platinum nanoparticles deposited on zincoxide nanorods (Pt NPs-ZnO NRs) under visible light irradiation. READ MORE

  3. 3. Nonlinear Chaotic and Trend Analyses of Water Level at Urmia Lake, Iran

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Sina Khatami Mashhadi; [2013]
    Keywords : Hypersaline lake; Urmia Lake; Artemia Urmiana; Nonlinear time series analysis; Chaos Theory; Correlation Dimension Method; Man-Kendall trend test; Trend; Climate Variability; Hydroclimatology; Salinity; Secondary Salinization; Regressions; Technology and Engineering;

    Abstract : Urmia Lake is the largest habitat of Artemia Urmiana in the world located in an endorheic basin in northwest Iran. This shallow terminal lake has been designated as a Biosphere Reserve by UNESCO and a National Park under the 1971 Ramsar Convention. READ MORE

  4. 4. Deforestation Impacts on Biodiversity Conservation in the Dja Biosphere Reserve of Cameroon

    University essay from Mittuniversitetet/Institutionen för teknik och hållbar utveckling

    Author : Ndum Fidelis Oke; [2009]
    Keywords : Deforestation; Biodiversity Conservation; Sustainable Development;

    Abstract : Abstract The tropical rainforest of the world are very important for the global ecosystems. Most of the remaining rainforest in Africa is concentrated within the Congo Basin forest area. The Congo basin rainforest is second that of the Amazon basin and with the Indonesian forest are the most important rainforest in the world. READ MORE

  5. 5. Integrating conservation and sustainable use of biodiversity : Four Examples of Ecosystem Management Areas in Germany and Sweden

    University essay from Södertörns högskola/Institutionen för livsvetenskaper

    Author : Franziska Solbrig; [2007]
    Keywords : sustainable use; conservation; Biosphere Reserves; Regional Landscape Strategies; maintenance of biodiversity; state of landscape worth to maintain;

    Abstract : The loss of biodiversity is recognised as a tremendous threat to ecosystems, but its maintenance is challenging. One important issue is seen as decisive for its success: the integration of sustainable use and conservation of biodiversity that means to reconcile protective measures with different kinds of use. READ MORE