Essays about: "food web on ecosystem"

Showing result 11 - 15 of 18 essays containing the words food web on ecosystem.

1. 11. The role of initial ecosystem state for future resilience and ecosystem outcome

   University essay from Stockholms universitet/Stockholm Resilience Centre

   Author : Catarina Larsson; [2014]
   Keywords : resilience; marine ecosystem; Baltic Sea; ecosystem management;

   Abstract : Loss of marine ecosystem resilience can lead to abrupt changes in ecosystem structure, so called regime shifts, which affects dynamics and function of the ecosystem. Loss of ecosystem provisioning services can have a substantial impact on human well-being. READ MORE

3. 12. Evaluation of modeling ecosystem seasonality in the University of Victoria Earth System Climate Model

   University essay from Lunds universitet/Examensarbeten i biologi

   Author : Annika Eisele; [2013]
   Keywords : Biology and Life Sciences;

   Abstract : Abstract Investigating climate model ability to simulate ecosystem seasonality, for instance causes and dynamics of phytoplankton blooms in the North Atlantic, is of major importance, because interannual and seasonal variations in bloom timing, duration and intensity caused by anthropogenic induced global climate change, can lead to species shifts and alterations in the trophic food web and biogeochemical cycles, which otherwise may remain undetected on an annual scale. The seasonal variability of the North Atlantic spring bloom is highly related to surface pCO2 (Takahashi et al. READ MORE

4. 13. Structural variation across food webs as a measure of biodiversity at the ecosystem level

   University essay from Institutionen för fysik, kemi och biologi; Tekniska högskolan

   Author : Rickard Pettersson; [2013]
   Keywords : Biodiversity; Euclidian distance; Food webs; Network characteristics;

   Abstract : Biodiversity can be measured in several ways and on several levels. In this study a framework is developed to use topological differences in the food webs describing ecosystems to quantify differences between ecosystems. This is then used in an attempt to describe biodiversity at the ecosystem level. READ MORE

5. 14. Does an evolutionary change in the water sowbug Asellus aquaticus L. alter its functional role?

   University essay from Ekologi; Tekniska högskolan

   Author : Md. Maidul Islam Choudhury; [2011]
   Keywords : Asellus aquaticus; eco-evolutionary dynamic; ecosystem process; Gammarus pulex; intra-specific; inter-specific.;

   Abstract : The ecology behind evolutionary diversification is a well studied area of research, whereas the effects of evolution on ecosystems get little attention. In line with ecological theory, evolutionary diversification of a species could influence different ecosystem aspects such as food web composition, energy flow, nutrient cycling etc. READ MORE

6. 15. Multiple pesticide stressors and ecosystem functioning in stream detrital food webs

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Mohab Dawoud; [2011]
   Keywords : Stream ecosystem; decomposition process; leaf litter; Lindane; Azoxystrobin; Asellus aquaticus; aquatic microorganism;

   Abstract : Streams and rivers are highly susceptible to environmental degradation from agricultural activities, including the clearance of riparian vegetation and the runoff of chemical fertilizers and pesticides. These impacts are likely to increase in the future as agricultural practices intensify to meet the needs of an expanding human population. READ MORE