The biodiversity audit approach challenges regional priorities and identifies a mismatch in conservation

1. Despite a strong uptake of evidence-based approaches, conservation often proceeds from a grossly incomplete understanding of species priorities. To optimize conservation impact within a biogeographical region, quantitative knowledge is needed of the species present, which should be prioritized, and the management interventions these require. The next challenge is to avoid a proliferation of competing species plans, or conversely, a lack of detail within generic habitat-based approaches. 2. We present a methodology for biodiversity auditing. We quantified regional biodiversity by systematically collating available species records, allowing objective prioritization. We collated autecological information to integrate multiple species into management guilds with shared requirements, providing evidence-based guidance for regional conservation. 3. For two regions of Eastern England, Breckland (2300 km^2 ) and The Broads (2000 km^2 ), we collated 083 and 15-million records, respectively. Numbers of species (12 845 and 11 067) and priority species (rare, threatened, designated or regionally restricted: 2097 and 1519, respectively) were orders of magnitude greater than previously recognized. Regional specialists, with a UK range largely or entirely restricted to the region, were poorly recognized posing a risk of regional homogenization. 4. A large body of autecological information existed for priority species and collating this allowed us to define cross-taxa management guilds. Numbers of priority species requiring different combinations of ecological processes and conditions were not matched by current conservation practice in Breckland. For example, the current agri-environment agreements for designated grass heaths potentially catered for only 15% of the 542 priority species and 21% of 47 regional specialists that could potentially benefit from evidence-based management. A focus on vegetation composition rather than the ecological requirements of priority species underpinned this failure. 5. Synthesis and applications. The biodiversity audit approach provides an objective model for prioritization and cost-effective conservation, applicable to regions of Europe where biodiversity has been well characterized. By using this approach to collate available information, management guilds with similar requirements can be defined across taxa, providing evidence-based guidance for regional conservatio

Tropical Hurwitz Numbers

Hurwitz numbers count genus g, degree d covers of the projective line with fixed branch locus. This equals the degree of a natural branch map defined on the Hurwitz space. In tropical geometry, algebraic curves are replaced by certain piece-wise linear objects called tropical curves. This paper develops a tropical counterpart of the branch map and shows that its degree recovers classical Hurwitz numbers.Comment: Published in Journal of Algebraic Combinatorics, Volume 32, Number 2 / September, 2010. Added section on genus zero piecewise polynomiality. Removed paragraph on psi classe

Introduction: magazines and/as media: periodical studies and the question of disciplinarity

No abstract available

Climate-ready conservation objectives: a scoping study

AbstractAnticipated future climate change is very likely to have a wide range of different types of ecological impact on biodiversity across the whole of Australia. There is a high degree of confidence that these changes will be significant, affecting almost all species, ecosystems and landscapes. However, because of the complexity of ecological systems and the multiple ways climate change will affect them, the details of the future change are less certain for any given species or location. The nature of the changes means that the multiple ways biodiversity is experienced, used and valued by society will be affected in different ways. The likely changes present a significant challenge to any societal aspiration to preserve biodiversity in its current state, for example, to maintain a species in its current abundance and distribution. Preserving biodiversity ‘as is’ may have been feasible in a stationary climate (one that is variable but not changing), but this will not be possible with the widespread, pervasive and large ecological changes anticipated under significant levels of climate change. This makes the impacts of climate change quite unlike other threats to biodiversity, and they challenge, fundamentally, what it actually means to conserve biodiversity under climate change: what should the objectives of biodiversity conservation be under climate change? And what are the barriers to recalibrating conservation objectives?Based on key insights from the scientific literature on climate change and biodiversity, the project developed three adaptation propositions about managing biodiversity:Conservation strategies accommodate large amounts of ecological change and the likelihood of significant climate change–induced loss in biodiversity. Strategies remain relevant and feasible under a range of possible future trajectories of ecological change.Strategies seek to conserve the multiple different dimensions of biodiversity that are experienced and valued by society. Together these propositions summarise the challenge of future climate change for biodiversity conservation, and define a new way of framing conservation we called the ‘climate ready’ approach. In the near term, conservation strategies may be able to include some consideration of these propositions. However, under significant levels of climate change many of the current approaches to conservation will become increasingly difficult and ineffective (e.g. maintaining community types in their current locations). This challenge is fundamentally different from that posed by other threats to biodiversity, and the climate-ready approach is akin to a paradigm shift in conservation.The project used a review of 26 conservation strategy documents (spanning scales from international to local) and four case studies with conservation agencies to test and refine the climate-ready approach. The project found the approach to be robust and highly relevant; in the majority of situations, if adopted, it would lead to significant changes in the objectives and priorities of conservation. There were also many ‘green shoots’ of elements of the new approach in existing conservation practice. However, the project found there are currently substantial barriers to fully adopting a climate-ready approach. These include the need for: further development of ecological characterisation of ecosystem health and human activities in landscapesmuch better understanding of how society values different aspects of biodiversity, including ecosystems and landscapesdevelopment of policy tools to codify and implement new ecologically robust and socially endorsed objectives.  Anticipated future climate change is very likely to have a wide range of different types of ecological impact on biodiversity across the whole of Australia. There is a high degree of confidence that these changes will be significant, affecting almost all species, ecosystems and landscapes. However, because of the complexity of ecological systems and the multiple ways climate change will affect them, the details of the future change are less certain for any given species or location. The nature of the changes means that the multiple ways biodiversity is experienced, used and valued by society will be affected in different ways. The likely changes present a significant challenge to any societal aspiration to preserve biodiversity in its current state, for example, to maintain a species in its current abundance and distribution. Preserving biodiversity ‘as is’ may have been feasible in a stationary climate (one that is variable but not changing), but this will not be possible with the widespread, pervasive and large ecological changes anticipated under significant levels of climate change. This makes the impacts of climate change quite unlike other threats to biodiversity, and they challenge, fundamentally, what it actually means to conserve biodiversity under climate change: what should the objectives of biodiversity conservation be under climate change? And what are the barriers to recalibrating conservation objectives?Based on key insights from the scientific literature on climate change and biodiversity, the project developed three adaptation propositions about managing biodiversity:Conservation strategies accommodate large amounts of ecological change and the likelihood of significant climate change–induced loss in biodiversity. Strategies remain relevant and feasible under a range of possible future trajectories of ecological change.Strategies seek to conserve the multiple different dimensions of biodiversity that are experienced and valued by society. Together these propositions summarise the challenge of future climate change for biodiversity conservation, and define a new way of framing conservation we called the ‘climate ready’ approach. In the near term, conservation strategies may be able to include some consideration of these propositions. However, under significant levels of climate change many of the current approaches to conservation will become increasingly difficult and ineffective (e.g. maintaining community types in their current locations). This challenge is fundamentally different from that posed by other threats to biodiversity, and the climate-ready approach is akin to a paradigm shift in conservation.The project used a review of 26 conservation strategy documents (spanning scales from international to local) and four case studies with conservation agencies to test and refine the climate-ready approach. The project found the approach to be robust and highly relevant; in the majority of situations, if adopted, it would lead to significant changes in the objectives and priorities of conservation. There were also many ‘green shoots’ of elements of the new approach in existing conservation practice. However, the project found there are currently substantial barriers to fully adopting a climate-ready approach. These include the need for: further development of ecological characterisation of ecosystem health and human activities in landscapesmuch better understanding of how society values different aspects of biodiversity, including ecosystems and landscapesdevelopment of policy tools to codify and implement new ecologically robust and socially endorsed objectives. Please cite this report as: Dunlop M, Parris, H, Ryan, P, Kroon, F 2013 Climate-ready conservation objectives: a scoping study, National Climate Change Adaptation Research Facility, Gold Coast, pp. 102

Prevalence and characteristics of tinnitus after leisure noise exposure in young adults

The main goal of this study was to assess the prevalence and characteristics of tinnitus among students after exposure to leisure noise. In addition, the effects of tinnitus on otoacoustic emissions (OAEs) in participants suffering from chronic tinnitus were evaluated. The study consisted of two parts. First, a questionnaire regarding leisure noise exposure and tinnitus was completed. Second, the hearing status of the subjects suffering from chronic tinnitus was evaluated and compared with a matched control group (CG). Furthermore, the psychoacoustical characteristics of their tinnitus in the chronic tinnitus group (TG) were established. The questionnaire was answered by 151 respondents. Seven persons suffering from chronic tinnitus were examined further in the second part of the study. Transient tinnitus was observed in 73.5% of the respondents after leisure noise exposure and 6.6% experienced chronic tinnitus. Transient and chronic tinnitus had similar characteristics, as established by the questionnaire. The amplitude of transient evoked otoacoustic emissions and distortion product otoacoustic emissions was reduced and the amount of efferent suppression was smaller in the TG as compared with the CG. Tinnitus induced by leisure noise is observed frequently in young adults. The characteristics of tinnitus cannot predict whether it will have a transient or rather a chronic nature. In subjects suffering from tinnitus, subclinical damage that cannot be detected by audiometry can be demonstrated by measuring OAEs. These findings underpin the importance of educating youth about the risks of noise exposure during leisure activities

Fe65 Is Phosphorylated on Ser289 after UV-Induced DNA Damage

Fe65 undergoes a phosphatase-sensitive gel mobility shift after DNA damage, consistent with protein phosphorylation. A recent study identified Ser228 as a specific site of phosphorylation, targeted by the ATM and ATR protein kinases, with phosphorylation inhibiting the Fe65-dependent transcriptional activity of the amyloid precursor protein (APP). The direct binding of Fe65 to APP not only regulates target gene expression, but also contributes to secretase-mediated processing of APP, producing cytoactive proteolytic fragments including the APP intracellular domain (AICD) and cytotoxic amyloid β (Aβ) peptides. Given that the accumulation of Aβ peptides in neural plaques is a pathological feature of Alzheimer’s disease (AD), it is essential to understand the mechanisms controlling Aβ production. This will aid in the development of potential therapeutic agents that act to limit the deleterious production of Aβ peptides. The Fe65-APP complex has transcriptional activity and the complex is regulated by multiple post-translational modifications and other protein binding partners. In the present study, we have identified Ser289 as a novel site of UV-induced phosphorylation. Interestingly, this phosphorylation was mediated by ATM, rather than ATR, and occurred independently of APP. Neither phosphorylation nor mutation of Ser289 affected the Fe65-APP interaction, though this was markedly decreased after UV treatment, with a concomitant decrease in the protein levels of APP in cells. Using mutagenesis, we demonstrated that Fe65 Ser289 phosphorylation did not affect the transcriptional activity of the Fe65-APP complex, in contrast to the previously described Ser228 site

Sex differences in limb and joint stiffnes in recreational runners

Purpose. Female runners are known to be at greater risk from chronic running injuries than age-matched males, although the exact mechanisms are often poorly understood. The aim of the current investigation was to determine if female recreational runners exhibit distinct limb and joint stiffness characteristics in relation to their male counterparts. Methods. Fourteen male and fourteen female runners ran over a force platform at 4.0 m · s–1. Lower limb kinematics were collected using an eight-camera optoelectric motion capture system operating at 250 Hz. Measures of limb and joint stiffness were calculated as a function of limb length and joint moments divided by the extent of limb and joint excursion. All stiffness and joint moment parameters were normalized to body mass. Sex differences in normalized limb and knee and ankle joint stiffness were examined statistically using independent samples t tests. Results. The results indicate that normalized limb (male = 0.18 ± 0.07, female = 0.37 ± 0.10 kN · kg · m–1) and knee stiffness (male = 5.59 ± 2.02, female = 7.34 ± 1.78 Nm · kg · rad–1) were significantly greater in female runners. Conclusions. On the basis that normalized knee and limb stiffness were shown to be significantly greater in female runners, the findings from the current investigation may provide further insight into the aetiology of the distinct injury patterns observed between sexes