Sökning: "human disturbance"

Visar resultat 1 - 5 av 117 avhandlingar innehållade orden human disturbance.

1. 1. Vibrations in timber floors : Dynamic properties and human perception

   Författare :Kirsi Jarnerö; Anders Professor; Tomi Toratti; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wooden floor; timber floor; vibration; design criteria; damping; frequency; questionnaire; field test; socio-vibrational survey; vibration annoyance; vibration disturbance; Byggteknik; Civil engineering;

   Sammanfattning : Springiness and vibrations of timber floors are familiar to many as a ‘live’ feelwhen walking on them, especially if living in single family housing with timberframework. Since the building regulations in Sweden changed to performancedependentrequirements in 1994 the use of timber in multifamily housing hasincreased. LÄS MER

3. 2. Human Abuses of Coral Reefs- Adaptive Responses and Regime Transitions

   Författare :Ingrid Nordemar; Nils Kautsky; Michael Tedengren; Hans Kautsky; Alina Szmant; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coral Reefs; Disturbance; Stress; Adaptive responses; Macroalgae; Ecosystem regimes; Resilience; Competition; Traits; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Sammanfattning : During the last few decades, coral reefs have become a disappearing feature of tropical marine environments, and those reefs that do remain are severely threatened. It is understood that humans have greately altered the environment under which these ecosystems previously have thrived and evoloved. LÄS MER

4. 3. Drivers of carbon sink function in tropical seagrass beds : influence of carbon import, plant composition, seascape configuration and human activities

   Författare :Rashid O. Ismail; Mats Björk; Martin Gullström; Maria E. Asplund; Amelia S. Buriyo; Matern S.P. Mtolera; Teresa Alcoverro; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon sequestration; tropical seagrass meadows; coastal seascape; landscape configuration and transformation; calcification; allochthonous carbon; community respiration; carbon sink; human disturbance; coastal conservation; Plant Physiology; växtfysiologi;

   Sammanfattning : Seagrass meadows are effective carbon sinks, sequestering atmospheric CO2 and capturing allochthonous organic material, storing organic carbon (Corg) in their sediments, so called Blue Carbon. In tropical areas, seagrass meadows have a high number of calcareous organisms, which can offset carbon sequestration by releasing CO2 through their calcification. LÄS MER

5. 4. Coral reefs in a human-dominated environment : implications of altered disturbance regimes and reduced resilience

   Författare :Magnus Nyström; Terry Done; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Korallrev; Ekosystem i vatten; Marine Ecotoxicology; marin ekotoxikologi;

   Sammanfattning : Coral reefs are facing an "Anthropocene " era where humans have advanced from a minor species with limited influence on coral reefs to a major source of disturbance. Disturbance arriving from human influences may not only interact with each other, but also with natural disturbance regimes, leading to synergistic effects. LÄS MER

7. 5. Relationship between wildlife and tourism - interdisciplinary insights from Arctic fox tourism in Sweden

   Författare :Malin Larm; Anders Angerbjörn; Barbara Zimmermann; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wildlife tourism; human disturbance; human-wildlife interaction; conservation; predation; arctic fox; zoologisk ekologi; Animal Ecology;

   Sammanfattning : Interactions between wildlife and tourism can be studied from several different perspectives and the effects of such interactions can influence animals both positively and negatively with effects on both individual and population levels. This thesis takes an interdisciplinary approach, combining both natural and social perspectives, when studying the effects of tourism activity on a small population of the endangered arctic fox (Vulpes lagopus). LÄS MER