Governance, Governments and Legislation

The mandate for policy action on ocean acidification falls under the remit of the United Nations Framework Convention on Climate change (UNFCCC) since, like climate change, ocean acidification is a result of anthropogenic CO2 emissions. The international community dealing with climate change must play a decisive role in encouraging national and local governments to scale-up efforts to mitigate CO2 emissions thereby reducing the impact of both climate change and ocean acidification. The annual UNFCCC meeting, Conference of the Parties (COP) represent pivotal opportunities for the ocean science community to provide the international community dealing with climate change with information and recommendations leading to informed solutions and policy guidelines that address ocean acidification. The objective is to develop a comprehensive message about the relevance of ocean acidification in current and future governance agendas. The target audiences include the international community dealing with climate change, climate negotiators, national leaders, UN agencies and Non-governmental Organisations, as well as the parties involved in the UNFCCC process.

Governance, Governments and Legislation

The mandate for policy action on ocean acidification falls under the remit of the United Nations Framework Convention on Climate change (UNFCCC) since, like climate change, ocean acidification is a result of anthropogenic CO2 emissions. The international community dealing with climate change must play a decisive role in encouraging national and local governments to scale-up efforts to mitigate CO2 emissions thereby reducing the impact of both climate change and ocean acidification. The annual UNFCCC meeting, Conference of the Parties (COP) represent pivotal opportunities for the ocean science community to provide the international community dealing with climate change with information and recommendations leading to informed solutions and policy guidelines that address ocean acidification. The objective is to develop a comprehensive message about the relevance of ocean acidification in current and future governance agendas. The target audiences include the international community dealing with climate change, climate negotiators, national leaders, UN agencies and Non-governmental Organisations, as well as the parties involved in the UNFCCC process.

Climate-Driven Range Shifts Within Benthic Habitats Across a Marine Biogeographic Transition Zone.

Anthropogenic climate change is causing unprecedented rapid responses in marine communities, with species across many different taxonomic groups showing faster shifts in biogeographic ranges than in any other ecosystem. Spatial and temporal trends for many marine species are difficult to quantify, however, due to the lack of long-term datasets across complete geographical distributions and the occurrence of small-scale variability from both natural and anthropogenic drivers. Understanding these changes requires a multidisciplinary approach to bring together patterns identified within long-term datasets and the processes driving those patterns using biologically relevant mechanistic information to accurately attribute cause and effect. This must include likely future biological responses, and detection of the underlying mechanisms in order to scale up from the organismal level to determine how communities and ecosystems are likely to respond across a range of future climate change scenarios. Using this multidisciplinary approach will improve the use of robust science to inform the development of fit-for-purpose policy to effectively manage marine environments in this rapidly changing world.

Climate-Driven Range Shifts Within Benthic Habitats Across a Marine Biogeographic Transition Zone.

Anthropogenic climate change is causing unprecedented rapid responses in marine communities, with species across many different taxonomic groups showing faster shifts in biogeographic ranges than in any other ecosystem. Spatial and temporal trends for many marine species are difficult to quantify, however, due to the lack of long-term datasets across complete geographical distributions and the occurrence of small-scale variability from both natural and anthropogenic drivers. Understanding these changes requires a multidisciplinary approach to bring together patterns identified within long-term datasets and the processes driving those patterns using biologically relevant mechanistic information to accurately attribute cause and effect. This must include likely future biological responses, and detection of the underlying mechanisms in order to scale up from the organismal level to determine how communities and ecosystems are likely to respond across a range of future climate change scenarios. Using this multidisciplinary approach will improve the use of robust science to inform the development of fit-for-purpose policy to effectively manage marine environments in this rapidly changing world.

A method for semi-automated objective quantification of linear bedforms from multi-scale Digital Elevation Models

The increasing availability of large, detailed digital representations of the Earth’s surface demands the application of objective and quantitative analyses. Given recent advances in the understanding of the mechanisms of formation of linear bedform features from a range of environments, objective measurement of their wavelength, orientation, crest and trough positions, height and asymmetry is highly desirable. These parameters are also of use when determining observation-based parameters for use in many applications such as numerical modelling, surface classification and sediment transport pathway analysis. Here, we (i) adapt and extend extant techniques to provide a suite of semi-automatic tools which calculate crest orientation, wavelength, height, asymmetry direction and asymmetry ratios of bedforms, and then (ii) undertake sensitivity tests on synthetic data, increasingly complex seabeds and a very large-scale (39 000km2) aeolian dune system. The automated results are compared with traditional, manually derived,measurements at each stage. This new approach successfully analyses different types of topographic data (from aeolian and marine environments) from a range of sources, with tens of millions of data points being processed in a semi-automated and objective manner within minutes rather than hours or days. The results from these analyses show there is significant variability in all measurable parameters in what might otherwise be considered uniform bedform fields. For example, the dunes of the Rub’ al Khali on the Arabian peninsula are shown to exhibit deviations in dimensions from global trends. Morphological and dune asymmetry analysis of the Rub’ al Khali suggests parts of the sand sea may be adjusting to a changed wind regime from that during their formation 100 to 10 ka BP.