68 research outputs found
The search for common anthropogenic impacts on biodiversity : a global network
We introduce an initiative to assess and compare landscape changes related to human activities on a global scale, using a single
group of invertebrates. The GLOBENET programme uses common field methodology (pitfall trapping), to appraise assemblages
of ground beetles (Coleoptera, Carabidae) in visually-similar land-mosaics (urban-rural gradients). Carabids were selected as the
focal taxon as they are sufficiently varied (both taxonomically and ecologically), abundant and sensitive to the environment.
However, work on other taxa is comparable with the GLOBENET framework. The continuum of decreasing human pressure
from city centres into the surrounding countryside was selected to represent human-caused disturbance for this initial stage of
GLOBENET because these gradients can be found virtually all over the world. Through the broad-scale assessment envisioned
in the GLOBENET programme, we seek to separate general, repeated effects on biodiversity from those that depend on local
environments or particular biotic assemblages. Based on this understanding we aim to develop simple tools and protocols for
assessing ecological effects of human-caused landscape changes, which could help to sustainably manage landscapes for biodiversity
and for human requirements. For instance, the response of different functional groups of carabids to these landscape
changes may help guide management practices. Further GLOBENET developments and information are available at our website:
http://www.helsinki.fi/science/globenet
Where have all the beetles gone? Long‐term study reveals carabid species decline in a nature reserve in Northern Germany
1. The drastic insect decline has received increasing attention in scientific as well as in public media. Long-term studies of insect diversity trends are still rare, even though such studies are highly important to assess extent, drivers and potential consequences of insect loss in ecosystems.
2. To gain insights into carabid diversity trends of ancient and sustainably managed woodlands, we analysed data of carabid beetles from a trapping study that has been run for 24 years in an old nature reserve of Northern Germany, the Luneburg Heath. We examined temporal changes in several diversity measures € (e.g. biomass, species richness, functional diversity and phylogenetic diversity) and tested diverse species traits as predictor variables for species occurrence.
3. In contrast to recently published long-term studies of insect diversity, we did not observe a decline in biomass, but in species richness and phylogenetic diversity in carabids at our study site. Additionally, hibernation stage predicted the occurrence probability of carabids: Species hibernating as imagines or both imagines and larvae and breeding in spring showed strongest declines.
4. We assume the detected trends to be the result of external effects such as climate change and the application of pesticides in the surrounding. Our results suggest that the drivers for the insect decline and the responses are multifaceted. This highlights the importance of long-term studies with identification of the catches to, at best, species level to support the understanding of mechanisms driving changes in insect diversity and abundance
Production of biogas - a manner of manufacturing
Advertising is commonly criticised for being pervasive, offensive, manipulative, harmful
and irresponsible. This thesis focuses on the subjective criticisms and complex issues
related to taste, decency, morality and offence, particularly as applied to, and
understood within, the public and non-profit contexts. It is positioned at the intersection
of marketing communications, marketing ethics, and social and non-profit marketing
and explores how shocking, offensive and/or controversial (SOC) advertising appeals
are interpreted, regulated and contested, by divergent groups of people. The approach
taken is inspired by stakeholder theory and its focus on ethical decision-making for the
betterment of all stakeholders. A mixed methods research design was adopted, resulting
in three studies and these are presented as three discrete articles.
Article I maps the field of existing research into SOC advertising and identifies gaps in
our knowledge by means of a systematic literature review. It offers a critical appraisal
of the field by highlighting definitional tensions, limited interdisciplinary work and an
overdependence on student samples, on quantitative analysis and on non-longitudinal
methodologies. It then proposes a series of remedies to these shortcomings. The second
and third papers continue this reparative work by conceptualising and analysing actual
SOC advertising interpretations and contestations.
Article II explores the interpretations and experiences of SOC advertising within the
regulatory context by analysing evidence from complainants, advertisers and regulatory
bodies. It then proposes and develops an interpretation of the implicit power dynamics
through which their contradictory interests overlap. The methodology underpinning
this chapter combines a thematic content analysis of a substantial archive of complaints
submitted to the Advertising Standards Authority (ASA) with an interpretation of case
adjudication reports influenced by the work of Michel Foucault. The findings suggest
that the regulation of SOC advertising prioritises the interests of firms and advertisers
by relegating the role of complainant to that of merely registering complaints.
The focus of Article III moves from the regulatory framework to the complained-about
advertisements themselves. It provides an innovative theoretical and methodological
approach to analysing SOC advertisements, rooted in the classic Aristotelian notion of
rhetorical appeals and figuration, by developing and analysing a carefully selected
example in detail. The analysis reveals an implicit NFP sector-specific appeal to ethos
and the importance of a complex appeal to pathos.
Each of the papers offers a different level of analysis of the often-contradictory
viewpoints represented by stakeholder groups involved in, or affected by, the use of
SOC advertising tactics. These viewpoints include academics, general consumers, the
vocal minority of complainants, the advertisers including the non-profit and public
organisations and the advertising creatives, and the advertising regulator. Taken
together, the papers amount to a thesis that makes an important contribution to debates
about the appropriateness, ethics, and application of SOC themes, formats and imagery
in social and non-profit advertising. By exploring the regulatory processes of the ASA,
an exemplary advertising self-regulatory body, it further contributes to the discourse
on self-regulatory practices and highlights an NFP sector-specific consequentialist
approach that appears to stifle the voice of the offended complainant. On a practical
level, this work has implications for advertising practitioners and advertising regulators
who are involved in producing and regulating advertising that uses SOC tactics
Phylogenetic Relationships of Tribes Within Harpalinae (Coleoptera: Carabidae) as Inferred from 28S Ribosomal DNA and the Wingless Gene
Harpalinae is a large, monophyletic subfamily of carabid ground beetles containing more than 19,000 species in approximately 40 tribes. The higher level phylogenetic relationships within harpalines were investigated based on nucleotide data from two nuclear genes, wingless and 28S rDNA. Phylogenetic analyses of combined data indicate that many harpaline tribes are monophyletic, however the reconstructed trees showed little support for deeper nodes. In addition, our results suggest that the Lebiomorph Assemblage (tribes Lebiini, Cyclosomini, Graphipterini, Perigonini, Odacanthini, Lachnophorini, Pentagonicini, Catapiesini and Calophaenini), which is united by a morphological synapomorphy, is not monophyletic, and the tribe Lebiini is paraphyletic with respect to members of Cyclosomini. Two unexpected clades of tribes were supported: the Zuphiitae, comprised of Anthiini, Zuphiini, Helluonini, Dryptini, Galeritini, and Physocrotaphini; and a clade comprised of Orthogoniini, Pseudomorphini, and Graphipterini. The data presented in this study represent a dense sample of taxa to examine the molecular phylogeny of Harpalinae and provide a useful framework to examine the origin and evolution of morphological and ecological diversity in this group
Continuous agrochemical treatments in agroecosystems can modify the effects of pendimethalin-based herbicide exposure on immunocompetence of a beneficial ground beetle
Herbicide application for pest control can negatively affect soil biodiversity, mainly acting on species that are involved in ecosystem service. In this study, field and laboratory trials were designed to assay herbicide exposure effects on the constitutive immunity of Harpalus (Pseudoophonus) rufipes (De Geer, 1774), a beneficial carabid species that inhabits croplands. The circulating hemocytes (THCs) and plasmatic levels of basal and total phenoloxidase (PO), as well as lysozyme-like enzyme activities, were measured as markers of exposure. In laboratory tests, the exposure to realistic field doses of pendimethalin-based herbicides for two, seven and 21 days caused a reduction in enzyme activities in beetles from organic crops. In beetles from conventional fields, the THCs and total PO activity decreased significantly at two and seven days after the initial exposure, though no effects were recorded on basal PO and lysozyme like-enzyme activities. These differences in enzyme activities and THCs indicate that the interference of pendimethalin with immune parameters clearly depends on both the different field conditions from which the population comes and the cumulative effects of repeated applications over the time
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