Project acronym 3SPIN
Project Three Dimensional Spintronics
Researcher (PI) Russell Paul Cowburn
Host Institution (HI) THE CHANCELLOR MASTERS AND SCHOLARSOF THE UNIVERSITY OF CAMBRIDGE
Call Details Advanced Grant (AdG), PE3, ERC-2009-AdG
Summary Spintronics, in which both the spin and the charge of the electron are used, is one of the most exciting new disciplines to emerge from nanoscience. The 3SPIN project seeks to open a new research front within spintronics: namely 3-dimensional spintronics, in which magnetic nanostructures are formed into a 3-dimensional interacting network of unrivalled density and hence technological benefit. 3SPIN will explore early-stage science that could underpin 3-dimensional metallic spintronics. The thesis of the project is: that by careful control of the constituent nanostructure properties, a 3-dimensional medium can be created in which a large number of topological solitons can exist. Although hardly studied at all to date, these solitons should be stable at room temperature, extremely compact and easy to manipulate and propagate. This makes them potentially ideal candidates to form the basis of a new spintronics in which the soliton is the basic transport vector instead of electrical current. ¬3.5M of funding is requested to form a new team of 5 researchers who, over a period of 60 months, will perform computer simulations and experimental studies of solitons in 3-dimensional networks of magnetic nanostructures and develop a laboratory demonstrator 3-dimensional memory device using solitons to represent and store data. A high performance electron beam lithography system (cost 1M¬) will be purchased to allow state-of-the-art magnetic nanostructures to be fabricated with perfect control over their magnetic properties, thus allowing the ideal conditions for solitons to be created and controllably manipulated. Outputs from the project will be a complete understanding of the properties of these new objects and a road map charting the next steps for research in the field.
Summary
Spintronics, in which both the spin and the charge of the electron are used, is one of the most exciting new disciplines to emerge from nanoscience. The 3SPIN project seeks to open a new research front within spintronics: namely 3-dimensional spintronics, in which magnetic nanostructures are formed into a 3-dimensional interacting network of unrivalled density and hence technological benefit. 3SPIN will explore early-stage science that could underpin 3-dimensional metallic spintronics. The thesis of the project is: that by careful control of the constituent nanostructure properties, a 3-dimensional medium can be created in which a large number of topological solitons can exist. Although hardly studied at all to date, these solitons should be stable at room temperature, extremely compact and easy to manipulate and propagate. This makes them potentially ideal candidates to form the basis of a new spintronics in which the soliton is the basic transport vector instead of electrical current. ¬3.5M of funding is requested to form a new team of 5 researchers who, over a period of 60 months, will perform computer simulations and experimental studies of solitons in 3-dimensional networks of magnetic nanostructures and develop a laboratory demonstrator 3-dimensional memory device using solitons to represent and store data. A high performance electron beam lithography system (cost 1M¬) will be purchased to allow state-of-the-art magnetic nanostructures to be fabricated with perfect control over their magnetic properties, thus allowing the ideal conditions for solitons to be created and controllably manipulated. Outputs from the project will be a complete understanding of the properties of these new objects and a road map charting the next steps for research in the field.
Max ERC Funding
2 799 996 €
Duration
Start date: 2010-03-01, End date: 2016-02-29
Project acronym ACTIVE_NEUROGENESIS
Project Activity-dependent signaling in radial glial cells and their neuronal progeny
Researcher (PI) Colin Akerman
Host Institution (HI) THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
Call Details Starting Grant (StG), LS5, ERC-2009-StG
Summary A significant advance in the field of development has been the appreciation that radial glial cells are progenitors and give birth to neurons in the brain. In order to advance this exciting area of biology, we need approaches that combine structural and functional studies of these cells. This is reflected by the emerging realisation that dynamic interactions involving radial glia may be critical for the regulation of their proliferative behaviour. It has been observed that radial glia experience transient elevations in intracellular Ca2+ but the nature of these signals, and the information that they convey, is not known. The inability to observe these cells in vivo and over the course of their development has also meant that basic questions remain unexplored. For instance, how does the behaviour of a radial glial cell at one point in development, influence the final identity of its progeny? I propose to build a research team that will capitalise upon methods we have developed for observing individual radial glia and their progeny in an intact vertebrate nervous system. The visual system of Xenopus Laevis tadpoles offers non-invasive optical access to the brain, making time-lapse imaging of single cells feasible over minutes and weeks. The system s anatomy lends itself to techniques that measure the activity of the cells in a functional sensory network. We will use this to examine signalling mechanisms in radial glia and how a radial glial cell s experience influences its proliferative behaviour and the types of neuron it generates. We will also examine the interactions that continue between a radial glial cell and its daughter neurons. Finally, we will explore the relationships that exist within neuronal progeny derived from a single radial glial cell.
Summary
A significant advance in the field of development has been the appreciation that radial glial cells are progenitors and give birth to neurons in the brain. In order to advance this exciting area of biology, we need approaches that combine structural and functional studies of these cells. This is reflected by the emerging realisation that dynamic interactions involving radial glia may be critical for the regulation of their proliferative behaviour. It has been observed that radial glia experience transient elevations in intracellular Ca2+ but the nature of these signals, and the information that they convey, is not known. The inability to observe these cells in vivo and over the course of their development has also meant that basic questions remain unexplored. For instance, how does the behaviour of a radial glial cell at one point in development, influence the final identity of its progeny? I propose to build a research team that will capitalise upon methods we have developed for observing individual radial glia and their progeny in an intact vertebrate nervous system. The visual system of Xenopus Laevis tadpoles offers non-invasive optical access to the brain, making time-lapse imaging of single cells feasible over minutes and weeks. The system s anatomy lends itself to techniques that measure the activity of the cells in a functional sensory network. We will use this to examine signalling mechanisms in radial glia and how a radial glial cell s experience influences its proliferative behaviour and the types of neuron it generates. We will also examine the interactions that continue between a radial glial cell and its daughter neurons. Finally, we will explore the relationships that exist within neuronal progeny derived from a single radial glial cell.
Max ERC Funding
1 284 808 €
Duration
Start date: 2010-02-01, End date: 2015-01-31
Project acronym AFFINITY
Project Actuation of Ferromagnetic Fibre Networks to improve Implant Longevity
Researcher (PI) Athina Markaki
Host Institution (HI) THE CHANCELLOR MASTERS AND SCHOLARSOF THE UNIVERSITY OF CAMBRIDGE
Call Details Starting Grant (StG), PE8, ERC-2009-StG
Summary This proposal is for an exploratory study into a radical new approach to the problem of orthopaedic implant loosening. Such loosening commonly occurs because the joint between the implant and the surrounding bone is insufficiently strong and durable. It is a serious problem both for implants cemented to the bone and for those dependent on bone in-growth into a rough/porous implant surface. In the latter case, the main problem is commonly that bone in-growth is insufficiently rapid or deep for a strong bond to be established. The idea proposed in this work is that the implant should have a highly porous surface layer, made by bonding ferromagnetic fibres together, into which bone tissue growth would occur. During the post-operative period, application of a magnetic field will cause the fibre network to deform elastically, as individual fibres tend to align with the field. This will impose strains on the bone tissue as it grows into the fibre network. Such mechanical deformation is known to be highly beneficial in promoting bone growth, providing the associated strain lies in a certain range (~0.1%). Preliminary work, involving both model development and experimental studies on the effect of magnetic fields on fibre networks, has suggested that beneficial therapeutic effects can be induced using field strengths no greater than those already employed for diagnostic purposes. A comprehensive 5-year, highly inter-disciplinary programme is planned, encompassing processing, network architecture characterisation, magneto-mechanical response investigations, various modelling activities and systematic in vitro experimentation to establish whether magneto-mechanical Actuation of Ferromagnetic Fibre Networks shows promise as a new therapeutic approach to improve implant longevity.
Summary
This proposal is for an exploratory study into a radical new approach to the problem of orthopaedic implant loosening. Such loosening commonly occurs because the joint between the implant and the surrounding bone is insufficiently strong and durable. It is a serious problem both for implants cemented to the bone and for those dependent on bone in-growth into a rough/porous implant surface. In the latter case, the main problem is commonly that bone in-growth is insufficiently rapid or deep for a strong bond to be established. The idea proposed in this work is that the implant should have a highly porous surface layer, made by bonding ferromagnetic fibres together, into which bone tissue growth would occur. During the post-operative period, application of a magnetic field will cause the fibre network to deform elastically, as individual fibres tend to align with the field. This will impose strains on the bone tissue as it grows into the fibre network. Such mechanical deformation is known to be highly beneficial in promoting bone growth, providing the associated strain lies in a certain range (~0.1%). Preliminary work, involving both model development and experimental studies on the effect of magnetic fields on fibre networks, has suggested that beneficial therapeutic effects can be induced using field strengths no greater than those already employed for diagnostic purposes. A comprehensive 5-year, highly inter-disciplinary programme is planned, encompassing processing, network architecture characterisation, magneto-mechanical response investigations, various modelling activities and systematic in vitro experimentation to establish whether magneto-mechanical Actuation of Ferromagnetic Fibre Networks shows promise as a new therapeutic approach to improve implant longevity.
Max ERC Funding
1 442 756 €
Duration
Start date: 2010-01-01, End date: 2015-11-30
Project acronym ALIGN
Project Ab-initio computational modelling of photovoltaic interfaces
Researcher (PI) Feliciano Giustino
Host Institution (HI) THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD
Call Details Starting Grant (StG), PE5, ERC-2009-StG
Summary The aim of the ALIGN project is to understand, predict, and optimize the photovoltaic energy conversion in third-generation solar cells, starting from an atomic-scale quantum-mechanical modelling of the photovoltaic interface. The quest for photovoltaic materials suitable for low-cost synthesis, large-area production, and functional architecture has driven substantial research efforts towards third-generation photovoltaic devices such as plastic solar cells, organic-inorganic cells, and photo-electrochemical cells. The physical and chemical processes involved in the harvesting of sunlight, the transport of electrical charge, and the build-up of the photo-voltage in these devices are fundamentally different from those encountered in traditional semiconductor heterojunction solar cells. A detailed atomic-scale quantum-mechanical description of such processes will lay down the basis for a rational approach to the modelling, optimization, and design of new photovoltaic materials. The short name of the proposal hints at one of the key materials parameters in the area of photovoltaic interfaces: the alignment of the quantum energy levels between the light-absorbing material and the electron acceptor. The level alignment drives the separation of the electron-hole pairs formed upon absorption of sunlight, and determines the open circuit voltage of the solar cell. The energy level alignment not only represents a key parameter for the design of photovoltaic devices, but also constitutes one of the grand challenges of modern computational materials science. Within this project we will develop and apply new ground-breaking computational methods to understand, predict, and optimize the energy level alignment and other design parameters of third-generation photovoltaic devices.
Summary
The aim of the ALIGN project is to understand, predict, and optimize the photovoltaic energy conversion in third-generation solar cells, starting from an atomic-scale quantum-mechanical modelling of the photovoltaic interface. The quest for photovoltaic materials suitable for low-cost synthesis, large-area production, and functional architecture has driven substantial research efforts towards third-generation photovoltaic devices such as plastic solar cells, organic-inorganic cells, and photo-electrochemical cells. The physical and chemical processes involved in the harvesting of sunlight, the transport of electrical charge, and the build-up of the photo-voltage in these devices are fundamentally different from those encountered in traditional semiconductor heterojunction solar cells. A detailed atomic-scale quantum-mechanical description of such processes will lay down the basis for a rational approach to the modelling, optimization, and design of new photovoltaic materials. The short name of the proposal hints at one of the key materials parameters in the area of photovoltaic interfaces: the alignment of the quantum energy levels between the light-absorbing material and the electron acceptor. The level alignment drives the separation of the electron-hole pairs formed upon absorption of sunlight, and determines the open circuit voltage of the solar cell. The energy level alignment not only represents a key parameter for the design of photovoltaic devices, but also constitutes one of the grand challenges of modern computational materials science. Within this project we will develop and apply new ground-breaking computational methods to understand, predict, and optimize the energy level alignment and other design parameters of third-generation photovoltaic devices.
Max ERC Funding
1 000 000 €
Duration
Start date: 2010-03-01, End date: 2016-02-29
Project acronym ASPIRE
Project Aqueous Supramolecular Polymers and Peptide Conjugates in Reversible Systems
Researcher (PI) Oren Alexander Scherman
Host Institution (HI) THE CHANCELLOR MASTERS AND SCHOLARSOF THE UNIVERSITY OF CAMBRIDGE
Call Details Starting Grant (StG), PE5, ERC-2009-StG
Summary Supramolecular polymers are of major interest in the field of self assembly with a promising outlook in areas of viscosity modification, compartmentalized architectures, bio-conjugates and drug-delivery applications. They are dynamic macromolecular materials prepared by simple mixing of relatively small components bearing complementary or self-complementary recognition motifs. A major limitation in the field, however, has been access to synthetic systems capable of undergoing self assembly in an aqueous environment. This research proposal develops well-defined, self-organizing macromolecular structures that will overcome this limitation by focusing on systems that rely on several non-covalent interactions occurring in concert rather than on single interactions alone. The envisioned supramolecular polymers and bio-conjugates are designed as dynamic water-soluble smart materials, whose architectures can be controlled and exhibit reversibility upon exposure to external stimuli such as electrochemical, temperature or pH changes. Molecular recognition events occurring between functional handles on both synthetic and bio-polymers will be investigated in order to control the formation of desired functional architectures through stoichiometrically controlled complexation. Preparation of synthetic core motifs to assemble discrete peptide aggregates such as the dimeric through hexameric oligomers of amyloid-beta(40/42) will lead to structural elucidation and insight into several peptide misfolding pathologies like Alzheimer's or Parkinson's disease.
Summary
Supramolecular polymers are of major interest in the field of self assembly with a promising outlook in areas of viscosity modification, compartmentalized architectures, bio-conjugates and drug-delivery applications. They are dynamic macromolecular materials prepared by simple mixing of relatively small components bearing complementary or self-complementary recognition motifs. A major limitation in the field, however, has been access to synthetic systems capable of undergoing self assembly in an aqueous environment. This research proposal develops well-defined, self-organizing macromolecular structures that will overcome this limitation by focusing on systems that rely on several non-covalent interactions occurring in concert rather than on single interactions alone. The envisioned supramolecular polymers and bio-conjugates are designed as dynamic water-soluble smart materials, whose architectures can be controlled and exhibit reversibility upon exposure to external stimuli such as electrochemical, temperature or pH changes. Molecular recognition events occurring between functional handles on both synthetic and bio-polymers will be investigated in order to control the formation of desired functional architectures through stoichiometrically controlled complexation. Preparation of synthetic core motifs to assemble discrete peptide aggregates such as the dimeric through hexameric oligomers of amyloid-beta(40/42) will lead to structural elucidation and insight into several peptide misfolding pathologies like Alzheimer's or Parkinson's disease.
Max ERC Funding
1 700 000 €
Duration
Start date: 2009-11-01, End date: 2015-10-31
Project acronym BBSG
Project Bosnian Bones, Spanish Ghosts: 'Transitional Justice' and the Legal Shaping of Memory after Two Modern Conflicts
Researcher (PI) Sarah Lynn Wastell (Born Haller)
Host Institution (HI) GOLDSMITHS' COLLEGE
Call Details Starting Grant (StG), SH2, ERC-2009-StG
Summary The proposed research entails an ethnographic study of two contemporary cases of post-conflict reconciliation: one, the Bosnian case, where international intervention ended conflict in a stalemate and went on to instigate a decade-long process of transition; and the other, the Spanish case, where a nationally-contrived pact of silence introduced an overnight transition after Franco's death a pact now being broken nearly seventy years after the country's civil war concluded. Both societies witnessed massive violations of international humanitarian law. Both societies are presently exhuming, identifying and re-burying their dead. But their trajectories of transitional justice could not have been more different. This project will investigate how Law shapes cultural memories of wartime atrocity in these contrasting scenarios. How do criminal prosecutions, constitutional reforms, and international rights mechanisms, provide or obfuscate the scales into which histories of violent conflict are framed? Does the systematic re-structuring of legislative and judicial infrastructure stifle recognition of past abuses or does it create the conditions through which such pasts can be confronted? How does Law shape or inflect the cultural politics of memory and memorialisation? And most importantly, how should legal activity be weighted, prioritised and sequenced with other, extra-legal components of peace-building initiatives? The ultimate goal of this project will be to mobilise the findings from the two field-sites to suggest a more nuanced assessment of Law s place in transitional justice. Arguing that disparate historical, cultural and legal contexts require equally distinct approaches towards social healing, the research aims to produce a Post-Conflict Action Framework an architecture of questions and concerns, which, once answered, would point towards context-specific designs for transitional justice programmes in the future.
Summary
The proposed research entails an ethnographic study of two contemporary cases of post-conflict reconciliation: one, the Bosnian case, where international intervention ended conflict in a stalemate and went on to instigate a decade-long process of transition; and the other, the Spanish case, where a nationally-contrived pact of silence introduced an overnight transition after Franco's death a pact now being broken nearly seventy years after the country's civil war concluded. Both societies witnessed massive violations of international humanitarian law. Both societies are presently exhuming, identifying and re-burying their dead. But their trajectories of transitional justice could not have been more different. This project will investigate how Law shapes cultural memories of wartime atrocity in these contrasting scenarios. How do criminal prosecutions, constitutional reforms, and international rights mechanisms, provide or obfuscate the scales into which histories of violent conflict are framed? Does the systematic re-structuring of legislative and judicial infrastructure stifle recognition of past abuses or does it create the conditions through which such pasts can be confronted? How does Law shape or inflect the cultural politics of memory and memorialisation? And most importantly, how should legal activity be weighted, prioritised and sequenced with other, extra-legal components of peace-building initiatives? The ultimate goal of this project will be to mobilise the findings from the two field-sites to suggest a more nuanced assessment of Law s place in transitional justice. Arguing that disparate historical, cultural and legal contexts require equally distinct approaches towards social healing, the research aims to produce a Post-Conflict Action Framework an architecture of questions and concerns, which, once answered, would point towards context-specific designs for transitional justice programmes in the future.
Max ERC Funding
1 420 000 €
Duration
Start date: 2009-09-01, End date: 2013-08-31
Project acronym BIOCOMPLEX
Project Physical Aspects of the Evolution of Biological Complexity
Researcher (PI) Raymond Ethan Goldstein
Host Institution (HI) THE CHANCELLOR MASTERS AND SCHOLARSOF THE UNIVERSITY OF CAMBRIDGE
Call Details Advanced Grant (AdG), PE3, ERC-2009-AdG
Summary One of the most fundamental issues in evolutionary biology is the nature of transitions from single cell organisms to multicellular ones, with accompanying cellular differentiation and specialization. Not surprisingly for microscopic life in fluid environments, many of the relevant physical considerations involve diffusion, mixing, and sensing, for the efficient exchange of nutrients and metabolites with the environment is one of the most basic features of life. This proposal describes a combination of experimental and theoretical research aimed at some of the key mysteries surrounding transport and sensing by and in complex, multicellular organisms, and the implications of those findings for the explanation of driving forces behind transitions to multicellularity. There are two main components of the research. The first involves studies of single and multicellular algae which serves as model systems for allometric scaling laws in evolution. Of particular importance are the synchronization dynamics of the eukaryotic flagella that provide motility, enhance nutrient transport, and allow phototaxis in these organisms. The second thrust involves investigation of the ubiquitous phenomenon of cytoplasmic streaming in aquatic and terrestrial plants. Despite decades of research, there is no clear consensus on the metabolic role of this persistent circulation of the fluid contents of cell. Building on recent theoretical developmnts we will study its implications for internal transport and mixing, homeostasis, and development in large cells. In each case, state-of-the art experimental methods from physics, fluid dynamics, and cell biology will be used in combination with advanced theoretical methods for the study of the stochastic nonlinear PDEs that form the natural description of these systems.
Summary
One of the most fundamental issues in evolutionary biology is the nature of transitions from single cell organisms to multicellular ones, with accompanying cellular differentiation and specialization. Not surprisingly for microscopic life in fluid environments, many of the relevant physical considerations involve diffusion, mixing, and sensing, for the efficient exchange of nutrients and metabolites with the environment is one of the most basic features of life. This proposal describes a combination of experimental and theoretical research aimed at some of the key mysteries surrounding transport and sensing by and in complex, multicellular organisms, and the implications of those findings for the explanation of driving forces behind transitions to multicellularity. There are two main components of the research. The first involves studies of single and multicellular algae which serves as model systems for allometric scaling laws in evolution. Of particular importance are the synchronization dynamics of the eukaryotic flagella that provide motility, enhance nutrient transport, and allow phototaxis in these organisms. The second thrust involves investigation of the ubiquitous phenomenon of cytoplasmic streaming in aquatic and terrestrial plants. Despite decades of research, there is no clear consensus on the metabolic role of this persistent circulation of the fluid contents of cell. Building on recent theoretical developmnts we will study its implications for internal transport and mixing, homeostasis, and development in large cells. In each case, state-of-the art experimental methods from physics, fluid dynamics, and cell biology will be used in combination with advanced theoretical methods for the study of the stochastic nonlinear PDEs that form the natural description of these systems.
Max ERC Funding
2 500 000 €
Duration
Start date: 2010-01-01, End date: 2015-12-31
Project acronym BIOINCMED
Project Bioinorganic Chemistry for the Design of New Medicines
Researcher (PI) Peter John Sadler
Host Institution (HI) THE UNIVERSITY OF WARWICK
Call Details Advanced Grant (AdG), PE5, ERC-2009-AdG
Summary Bioinorganic chemistry is a rapidly expanding area of research, but the potential for the therapeutic application of metal complexes is highly underdeveloped. The basic principles required to guide the development of metal-containing therapeutic agents are lacking, despite the unique therapeutic opportunities which they offer. It is the goal of the proposed research to establish basic principles of medicinal coordination chemistry of metals that will allow the rational screening of future metallopharmaceuticals. We propose to utilize the power of inorganic chemistry to provide new knowledge of and new approaches for intervention in biological systems. This will be based on improved understanding of reactions of metal complexes under physiological conditions, on improving the specificity of their interactions, and gaining control over the potential toxicity of synthetic metal complexes. The research programme is highly interdisciplinary involving chemistry, physics, biology and pharmacology, with potential for the discovery of truly novel medicines, especially for the treatment of diseases and conditions which are currently intractable, such as cancer. The challenging and ambitious goals of the present work involve transition metal complexes with novel chemical and biochemical mechanisms of action. They will contain novel features which allow them (i) to be selectively activated by light in cells, or (ii) to be activated by a structural transition, or (ii) exhibit catalytic activity in cells. This ground-breaking research potentially has a very high impact and is based on recent discoveries in the applicant s laboratory. A feature of the programme is the use of state-of-the-art-and-beyond methodology to advance knowledge of medicinal metal coordination chemistry.
Summary
Bioinorganic chemistry is a rapidly expanding area of research, but the potential for the therapeutic application of metal complexes is highly underdeveloped. The basic principles required to guide the development of metal-containing therapeutic agents are lacking, despite the unique therapeutic opportunities which they offer. It is the goal of the proposed research to establish basic principles of medicinal coordination chemistry of metals that will allow the rational screening of future metallopharmaceuticals. We propose to utilize the power of inorganic chemistry to provide new knowledge of and new approaches for intervention in biological systems. This will be based on improved understanding of reactions of metal complexes under physiological conditions, on improving the specificity of their interactions, and gaining control over the potential toxicity of synthetic metal complexes. The research programme is highly interdisciplinary involving chemistry, physics, biology and pharmacology, with potential for the discovery of truly novel medicines, especially for the treatment of diseases and conditions which are currently intractable, such as cancer. The challenging and ambitious goals of the present work involve transition metal complexes with novel chemical and biochemical mechanisms of action. They will contain novel features which allow them (i) to be selectively activated by light in cells, or (ii) to be activated by a structural transition, or (ii) exhibit catalytic activity in cells. This ground-breaking research potentially has a very high impact and is based on recent discoveries in the applicant s laboratory. A feature of the programme is the use of state-of-the-art-and-beyond methodology to advance knowledge of medicinal metal coordination chemistry.
Max ERC Funding
1 565 397 €
Duration
Start date: 2010-07-01, End date: 2015-12-31
Project acronym BIOTIME
Project Biological diversity in an inconstant world: temporal turnover in modified ecosystems
Researcher (PI) Anne Elizabeth Magurran
Host Institution (HI) THE UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
Call Details Advanced Grant (AdG), LS8, ERC-2009-AdG
Summary This project addresses a key issue in fundamental research - one that has challenged ecologists ever since Darwin s time that is why some species are common, and others rare, and why, despite marked turnover at the level of individual species abundances, the structure of a community is generally conserved through time. Its aim is to examine the temporal dynamics of species abundance distributions (SADs), and to assess the capacity of these distributions to withstand change (resistance) and to recover from change (resilience). These are topical and important questions given the increasing impact that humans are having on the natural world. There are three components to the research. First, we will model SADs and predict responses to a range of events including climate change and the arrival of invasive species. A range of modeling approaches (including neutral, niche and statistical) will be adopted; by incorporating temporal turnover in hitherto static models we will advance the field. Second, we will test predictions concerning the resistance and resilience of SADs by a comparative analysis of existing data sets (that encompass communities in terrestrial, freshwater and marine environments for ecosystems extending from the poles to the tropics) and through a new field experiment that quantifies temporal turnover across a community (unicellular organisms to vertebrates) in relation to factors both natural (dispersal limitation) and anthropogenic (human disturbance) thought to shape SADs. In the final part of the project we will apply these new insights into the temporal dynamics of SADs to two important conservation challenges. These are 1) the conservation of biodiversity in a heavily utilized European landscape (Fife, Scotland) and 2) the conservation of biodiversity in Mamirauá and Amaña reserves in Amazonian flooded forest. Taken together this research will not only shed new light on the structure of ecological communities but will also aid conservation.
Summary
This project addresses a key issue in fundamental research - one that has challenged ecologists ever since Darwin s time that is why some species are common, and others rare, and why, despite marked turnover at the level of individual species abundances, the structure of a community is generally conserved through time. Its aim is to examine the temporal dynamics of species abundance distributions (SADs), and to assess the capacity of these distributions to withstand change (resistance) and to recover from change (resilience). These are topical and important questions given the increasing impact that humans are having on the natural world. There are three components to the research. First, we will model SADs and predict responses to a range of events including climate change and the arrival of invasive species. A range of modeling approaches (including neutral, niche and statistical) will be adopted; by incorporating temporal turnover in hitherto static models we will advance the field. Second, we will test predictions concerning the resistance and resilience of SADs by a comparative analysis of existing data sets (that encompass communities in terrestrial, freshwater and marine environments for ecosystems extending from the poles to the tropics) and through a new field experiment that quantifies temporal turnover across a community (unicellular organisms to vertebrates) in relation to factors both natural (dispersal limitation) and anthropogenic (human disturbance) thought to shape SADs. In the final part of the project we will apply these new insights into the temporal dynamics of SADs to two important conservation challenges. These are 1) the conservation of biodiversity in a heavily utilized European landscape (Fife, Scotland) and 2) the conservation of biodiversity in Mamirauá and Amaña reserves in Amazonian flooded forest. Taken together this research will not only shed new light on the structure of ecological communities but will also aid conservation.
Max ERC Funding
1 812 782 €
Duration
Start date: 2010-08-01, End date: 2016-01-31
Project acronym BRAINPOWER
Project Brain energy supply and the consequences of its failure
Researcher (PI) David Ian Attwell
Host Institution (HI) UNIVERSITY COLLEGE LONDON
Call Details Advanced Grant (AdG), LS5, ERC-2009-AdG
Summary Energy, supplied in the form of oxygen and glucose in the blood, is essential for the brain s cognitive power. Failure of the energy supply to the nervous system underlies the mental and physical disability occurring in a wide range of economically important neurological disorders, such as stroke, spinal cord injury and cerebral palsy. Using a combination of two-photon imaging, electrophysiological, molecular and transgenic approaches, I will investigate the control of brain energy supply at the vascular level, and at the level of individual neurons and glial cells, and study the deleterious consequences for the neurons, glia and vasculature of a failure of brain energy supply. The work will focus on the following fundamental issues: A. Vascular control of the brain energy supply (1) How important is control of energy supply at the capillary level, by pericytes? (2) Which synapses control blood flow (and thus generate functional imaging signals) in the cortex? B. Neuronal and glial control of brain energy supply (3) How is grey matter neuronal activity powered? (4) How is the white matter supplied with energy? C. The pathological consequences of a loss of brain energy supply (5) How does a fall of energy supply cause neurotoxic glutamate release? (6) How similar are events in the grey and white matter in energy deprivation conditions? (7) How does a transient loss of energy supply affect blood flow regulation? (8) How does brain energy use change after a period without energy supply? Together this work will significantly advance our understanding of how the energy supply to neurons and glia is regulated in normal conditions, and how the loss of the energy supply causes disorders which consume more than 5% of the costs of European health services (5% of ~1000 billion euro/year).
Summary
Energy, supplied in the form of oxygen and glucose in the blood, is essential for the brain s cognitive power. Failure of the energy supply to the nervous system underlies the mental and physical disability occurring in a wide range of economically important neurological disorders, such as stroke, spinal cord injury and cerebral palsy. Using a combination of two-photon imaging, electrophysiological, molecular and transgenic approaches, I will investigate the control of brain energy supply at the vascular level, and at the level of individual neurons and glial cells, and study the deleterious consequences for the neurons, glia and vasculature of a failure of brain energy supply. The work will focus on the following fundamental issues: A. Vascular control of the brain energy supply (1) How important is control of energy supply at the capillary level, by pericytes? (2) Which synapses control blood flow (and thus generate functional imaging signals) in the cortex? B. Neuronal and glial control of brain energy supply (3) How is grey matter neuronal activity powered? (4) How is the white matter supplied with energy? C. The pathological consequences of a loss of brain energy supply (5) How does a fall of energy supply cause neurotoxic glutamate release? (6) How similar are events in the grey and white matter in energy deprivation conditions? (7) How does a transient loss of energy supply affect blood flow regulation? (8) How does brain energy use change after a period without energy supply? Together this work will significantly advance our understanding of how the energy supply to neurons and glia is regulated in normal conditions, and how the loss of the energy supply causes disorders which consume more than 5% of the costs of European health services (5% of ~1000 billion euro/year).
Max ERC Funding
2 499 947 €
Duration
Start date: 2010-04-01, End date: 2016-03-31
