Assessing the impacts/effects of multiple stressors on marine ecosystems in the Anthropocene

Athanasios Kandylas, Dylan Rayner, Ingmar Valdemarson á Løgmansbø, Stephanie Berntsen Croft, Juliane Schulte, Elisa Escabia & Tabea Meyerjuergens

Studenteropgave: Basisprojekt

Abstrakt

There is an urgent concern towards increasing human activities and the effects that they have on our planet - one of the most significantly affected by this manifold of stressors are the marine ecosystems. Current approaches to assess the risk of anthropogenic stressors to marine ecosystems are developed for individual stressors. The cumulative impact of several stressors, however, may differ from the impact of them individually, resulting in non-linear effects and ecological surprises. There are challenges facing the assessment of stressors and how they affect an impacted ecosystem; based on the complexity of network-based ecosystem levels, response dynamics, cascading effects, and the direct and indirect interactions/interconnections between stressors and who/what are affected. From the lack of assessment methods implementing a cumulative effect of stressors, we address the need for a solution encompassing multiple stressor assessment methods; an assessment method with the ability for variation and change in an environment that is applicable over a range of spatial and temporal scales. This topic fits into a semester binding of ''The application of natural science in technology and society'' due to the relative cause and effect connection between a faulty society, it is built technologies, and the impacts it has imposed on marine ecosystems. Measurability, sensitivity, scalability, transferability, communicability, and predictability, were the criteria used to judge the methods found within the conducted literature review. The resulting recommended tiered approach is given in nine steps; a combination of scientific methods with considerations and improvements towards establishing a more holistic assessment for multiple stressors on the marine ecosystems in the Anthropocene, which was then applied to a hypothetical case study in the Great Barrier Reef.

UddannelserBasis - International Naturvidenskabelig Bacheloruddannelse, (Bachelor uddannelse) Basis
SprogEngelsk
Udgivelsesdatodec. 2017
VejledereFarhan Khan