1,477 research outputs found
Embedding the concept of ecosystems services:The utilisation of ecological knowledge in different policy venues
The concept of ecosystem services is increasingly being promoted by academics and policy makers as a means to protect ecological systems through more informed decision making. A basic premise of this approach is that strengthening the ecological knowledge base will significantly enhance ecosystem health through more sensitive decision making. However, the existing literature on knowledge utilisation, and many previous attempts to improve decision making through better knowledge integration, suggest that producing ‘more knowledge’ is only ever a necessary but insufficient condition for greater policy success. We begin this paper by reviewing what is already known about the relationship between ecological knowledge development and utilisation, before introducing a set of theme issue papers that examine—for the very first time—how this politically and scientifically salient relationship plays out across a number of vital policy venues such as land-use planning, policy-level impact assessment, and cost–benefit analysis. Following a detailed synthesis of the key findings of all the papers, this paper identifies and explores new research and policy challenges in this important and dynamic area of environmental governance
Combinatorial metabolic pathway assembly approaches and toolkits for modular assembly
Synthetic Biology is a rapidly growing interdisciplinary field that is primarily built upon foundational advances in molecular biology combined with engineering design principles such as modularity and interoperability. The field considers living systems as programmable at the genetic level and has been defined by the development of new platform technologies and methodological advances. A key concept driving the field is the Design-Build-Test-Learn cycle which provides a systematic framework for building new biological systems. One major application area for synthetic biology is biosynthetic pathway engineering that requires the modular assembly of different genetic regulatory elements and biosynthetic enzymes. In this review we provide an overview of modular DNA assembly and describe and compare the plethora of in vitro and in vivo assembly methods for combinatorial pathway engineering. Considerations for part design and methods for enzyme balancing are also presented, and we briefly discuss alternatives to intracellular pathway assembly including microbial consortia and cell-free systems for biosynthesis. Finally, we describe computational tools and automation for pathway design and assembly and argue that a deeper understanding of the many different variables of genetic design, pathway regulation and cellular metabolism will allow more predictive pathway design and engineering
Ecosystem services bundles:challenges and opportunities for implementation and further research
Background : the concept of ‘ecosystem services bundles’, i.e. ecosystem services that repeatedly appear together across space and/or time, has been developed and refined as part of an integrated approach to assess interactions between ecosystem services. Nevertheless, published evidence of actual use of bundles in decision-making is lacking. In the light of this gap, a review of what bundle approaches have shown and what they can bring to decision-making is timely. Method : we conducted two separate systematic reviews. The first one addressed emerging issues within what we identify as the diverse utilisation and definition of the concept of ‘bundle’ in the literature. The second one focused on papers dealing with bundles as sets of consistently associated services. Review Synthesis : the review first highlights that the confusion surrounding the term ‘bundle’ in ecosystem services literature threatens to weaken the potential for analysis of bundles to inform decision-making. Then, thanks to the review of peer-reviewed papers that detect bundles as sets of consistently associated services, we analyse the diversity of methodological choices and we detail the interactions observed between different ecosystem services across the literature. We also show that landscape features, socio-economic conditions and institutional factors are all potential drivers for the occurrence of specific bundles in a landscape. Discussion : overall, it appears that the analysis of bundles provides an opportunity to enhance policy effectiveness. Nevertheless, the methodological challenges linked to the identification and interpretation of bundles call for careful and reflective study designs. We anticipate that this review will lead to a better understanding by scientists and practitioners of the potential for bundle studies to inform decision-making
Deliberative and non-monetary valuation methods
Abstract There is an increasing interest in methods that can understand our values of ecosystem services in broad and multidimensional way. This chapter discusses a range of deliberative, analytical-deliberative, psychological and interpretive approaches to value the environment. Deliberative methods allow people to ponder, debate and negotiate their values, which can inform, moralise and democratise the valuation process. Analytical-deliberative approaches combine deliberative methods with more formal decision-support tools. Interpretive methods help us understand the narratives of places and what they mean to us as individuals and to our communities and culture. Psychological methods can survey the multi-faceted nature of how ecosystem services contribute to human well-being, and can also investigate our deeper held, 'transcendental' values. The way we approach valuation impacts on the type of values that are highlighted. Embracing values as a pluralistic concept means that, to comprehensively value ecosystem services, we need to embrace a diversity of methods to assess them
ACCESS II: A Complete Census of Star Formation in the Shapley Supercluster - UV and IR Luminosity Functions
We present panoramic Spitzer/MIPS mid- and far-infrared and GALEX ultraviolet
imaging of the the most massive and dynamically active system in the local
Universe, the Shapley supercluster at z=0.048, covering the 5 clusters which
make up the supercluster core. We combine these data with existing
spectroscopic data from 814 confirmed supercluster members to produce the first
study of a local rich cluster including both ultraviolet and infrared
luminosity functions (LFs). This joint analysis allows us to produce a complete
census of star-formation (both obscured and unobscured), extending down to
SFRs~0.02-0.05Msun/yr, and quantify the level of obscuration of star formation
among cluster galaxies, providing a local benchmark for comparison to ongoing
and future studies of cluster galaxies at higher redshifts with Spitzer and
Herschel. The GALEX NUV and FUV LFs obtained have steeper faint-end slopes than
the local field population, due largely to the contribution of massive,
quiescent galaxies at M_FUV>-16. The 24um and 70um galaxy LFs for the Shapley
supercluster instead have shapes fully consistent with those obtained for the
Coma cluster and for the local field galaxy population. This apparent lack of
environmental dependence for the shape of the FIR luminosity function suggests
that the bulk of the star-forming galaxies that make up the observed cluster
infrared LF have been recently accreted from the field and have yet to have
their star formation activity significantly affected by the cluster
environment. We estimate a global SFR of 327 Msun/yr over the whole
supercluster core, of which just ~20% is visible directly in the UV continuum
and ~80% is reprocessed by dust and emitted in the infrared. The level of
obscuration (L_IR/L_FUV) in star-forming galaxies is seen to increase linearly
with L_K over two orders of magnitude in stellar mass.Comment: 19 pages, 17 figures. Accepted for publication in MNRA
Salvage logging effects on regulating ecosystem services and fuel loads
We thank several authors who generously provided data
for this meta-analysis
(WebPanel 2). ABL acknowledges the
support of mobility grants from Universidad de Alcalá and
Spanish Ministry of Education, postdoctoral fellowships from
the Spanish Ministry of Economy and the Alexander von
Humboldt Foundation, and Project AS2013/MAE-2719
“REMEDINAL-3”
from the Government of Madrid. The
data underlying this paper are available through an institutional
repository (http://hdl.handle.net/10481/62260).Salvage logging, or logging after natural disturbances such as wildfires, insect outbreaks, and windstorms, is carried out to recover
some of a forest’s natural and/or economic capital. However, trade-offs
between management objectives and a lack of consensus
on the ecological consequences of salvage logging impair science-based
decision making on the management of forests after natural
disturbances. We conducted a global meta-analysis
of the impacts of salvage logging on regulating ecosystem services and on
fuel loads, as a frequent post-disturbance
objective is preventing subsequent wildfires that could be fueled by the accumulation of
dead trunks and branches. Salvage logging affected ecosystem services in a moderately negative way, regardless of disturbance type
and severity, time elapsed since salvage logging, intensity of salvage logging, and the group of regulating ecosystem services being
considered. However, prolonging the time between natural disturbance and salvage logging mitigated negative effects on regulating
ecosystem services. Salvage logging had no overall effect on surface fuels; rather, different fuel types responded differently
depending on the time elapsed since salvage logging. Delaying salvage logging by ~2–4 years may reduce negative ecological
impacts without affecting surface fuel loads.Project AS2013/MAE-2719 “REMEDINAL-3” from the Government of Madri
Comparative Myology and Evolution of Marsupials and Other Vertebrates, With Notes on Complexity, Bauplan, and "Scala Naturae"
The challenge of embedding an ecosystems approach:patterns of knowledge utilisation in public policy appraisal
The ‘ecosystem services approach’ (ESA) to policy making has refocused attention on how knowledge is embedded in policy. Appraisal has long been identified as an important venue for embedding, but suffers from well-known difficulties. This paper examines the extent to which an ESA appears in UK policy appraisal documents, and how far implementing an ESA via appraisal may encounter the same difficulties. A clear understanding of this is vital for interrogating claims that improving knowledge necessarily leads to more sustainable ecosystem management. The paper reports on the content of seventy-five national-level policy appraisals undertaken in the United Kingdom between 2008 and 2012. Only some elements of an ESA appear, with even the environment ministry failing to systematically pick up the concept, which is indeed subject to many of the familiar barriers to embedding environmental knowledge in appraisals. Policy initiatives attempting to institutionalise ecosystem values need to be conversant with these barriers
ACCESS IV: The quenching of star formation in a cluster population of dusty S0s
We present an analysis of the mid-infrared (MIR) colours of 165 70um-detected
galaxies in the Shapley supercluster core (SSC) at z=0.048 using panoramic
Spitzer/MIPS 24 and 70um imaging. While the bulk of galaxies show f70/f24
colours typical of local star-forming galaxies, we identify a significant
sub-population of 23 70micron-excess galaxies, whose MIR colours (f70/f24>25)
are much redder and cannot be reproduced by any of the standard model infrared
SEDs. These galaxies are found to be strongly concentrated towards the cores of
the five clusters that make up the SSC, and also appear rare among local field
galaxies, confirming them as a cluster-specific phenomenon. Their optical
spectra and lack of significant UV emission imply little or no ongoing star
formation, while fits to their panchromatic SEDs require the far-IR emission to
come mostly from a diffuse dust component heated by the general interstellar
radiation field rather than ongoing star formation. Most of these
70micron-excess galaxies are identified as ~L* S0s with smooth profiles. We
find that almost every cluster galaxy in the process of star-formation
quenching is already either an S0 or Sa, while we find no passive galaxies of
class Sb or later. Hence the formation of passive early-type galaxies in
cluster cores must involve the prior morphological transformation of late-type
spirals into Sa/S0s, perhaps via pre-processing or the impact of cluster tidal
fields, before a subsequent quenching of star formation once the lenticular
encounters the dense environment of the cluster core. In the cases of many
cluster S0s, this phase of star-formation quenching is characterised by an
excess of 70um emission, indicating that the cold dust content is declining at
a slower rate than star formation.Comment: 17 pages, 12 figures. Accepted for publication in MNRA
Floods and health in Gambella region, Ethiopia: a qualitative assessment of the strengths and weaknesses of coping mechanisms
BACKGROUND: Floods are the most frequent and devastating type of natural disaster worldwide, causing unprecedented deaths, diseases, and destruction of property and crops. Flooding has a greater impact in developing countries due to lack of sufficient disaster management structures and a lack of economic resources. OBJECTIVE: This study was conducted with the aim of contributing to the knowledge base of development strategies that reduce flood-related health risks in developing countries. The study focused particularly on assessing the flood risks and health-related issues in the Gambella region of Ethiopia; with the intent of producing relevant information to assist with the improvements in the efficacy of the current flood coping strategies in the region. METHODS: Data were gathered through interviews with 14 officers from different government and non-governmental organizations and a questionnaire survey given to 35 flood victims in Itang woreda. A qualitative approach was applied and the data were analyzed using content analysis. RESULTS: It was found that flooding is a common problem in Gambella region. The findings also indicate that the flood frequency and magnitude has increased rapidly during the last decade. The increase in floods was driven mainly by climate change and changes in land use, specifically deforestation. The reported main impacts of flooding on human health in Gambella region were deaths, injuries, and diseases such as malaria and diarrhea. Another notable consequence of flooding was crop destruction and subsequent malnutrition. CONCLUSIONS: Three weaknesses that were identified in the current coping strategies for flood-related health impacts in Gambella region were a lack of flood-specific policy, absence of risk assessment, and weak institutional capacity. This study recommends new policy approaches that will increase the effectiveness of the current flood coping strategies to sustainably address the impact of flooding on human health
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