Search for dissertations about: "community assembly."

Showing result 21 - 25 of 49 swedish dissertations containing the words community assembly..

2. 21. Microbially induced concrete degradation in subsea tunnels - Community structure of biofilms from sprayed reinforced concrete in the Oslofjord tunnel

   Author : Sabina Karacic; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microbial community structure; concrete deterioration; biocorrosion; 16S rRNA gene sequences; biofilm; subsea tunnel;

   Abstract : Microbially induced concrete deterioration has been discovered in several Norwegian subsea tunnels with significant disintegration of the calcium silicate hydrate (C-S-H) and steel fibre corrosion in areas with leakages of saline groundwater. Complex microbial biofilm activity together with abiotic attack from saline ground water, with high concentrations of Cl−, SO42−, Mg2+ and HCO3−, are responsible for the degradation in the specific subsea tunnel environment. READ MORE

4. 22. Factors influencing the biogeography of bacteria in fresh waters - a metacommunity approach

   Author : Jürg Brendan Logue; Eva S. Lindström; Silke Langenheder; Lars Tranvik; Byron Crump; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bacteria; diversity; richness; community composition; dispersal; metacommunity; fresh water; biogeography; Freshwater ecology; Limnisk ekologi; Microbiology; Mikrobiologi; Biologi med inriktning mot limnologi; Biology with specialization in Limnology;

   Abstract : One of ecology’s primary goals is to comprehend biodiversity and its patterns of distribution over space and time. Since microorganisms play a pivotal role in key ecological processes, the diversity of microbial communities may have important implications for the stability and functioning of Earth’s ecosystems. READ MORE

5. 23. The martial politics of biodiversity protection: Wildlife conservation practices in northern Kenya

   Author : Sara van der Hoeven; Göteborgs universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; social order; CBNRM; war by conservation; militarism; green militarization; Samburu; environment; the Northern Rangelands Trust NRT ; community conservation;

   Abstract : Wildlife conservation is entangled with broader conflict dynamics in pastoral and semi-arid northern Kenya and tackles livestock theft, road banditry and inter-communal conflict. The thesis aims to better understand this ‘war by conservation’, in which conservation and military-like practices address and tie into wider security issues. READ MORE

6. 24. Microbial Ecology of Granular Sludge

   Author : Raquel Liebana; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high-throughput DNA analysis; sequencing batch reactors; granular structure; wash-out dynamics; aerobic granular sludge; disturbance; fluorescence in-situ hybridization; microbial community dynamics; granulation; reproducibility;

   Abstract : Granular sludge is an efficient and compact biofilm process for wastewater treatment. Despite the well-established methods for granule cultivation, the ecological processes underpinning the microbial community assembly during granulation are poorly understood. READ MORE

7. 25. Traits or species – space or environment : how to understand the spatial structure of springtail community composition

   Author : Lina Ahlbäck Widenfalk; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : How communities are structured and the processes shaping species composition are among the basic questions in ecology. Knowledge about these processes is essential to predict changes in community composition in response to changes in for example climate or land use practices. READ MORE