Using Africa’s protected area network to estimate the global population of a threatened and declining species: a case study of the critically endangered White-headed Vulture Trigonoceps occipitalis

The White-headed Vulture Trigonoceps occipitalis (WhV) is uncommon and largely restricted to protected areas across its range in sub-Saharan Africa. We used the World Database on Protected Areas to identify protected areas (PAs) likely to contain White-headed Vultures. Vulture occurrence on road transects in Southern, East, and West Africa was adjusted to nests per km2 using data from areas with known numbers of nests and corresponding road transect data. Nest density was used to calculate the number of WhV nests within identified PAs and from there extrapolated to estimate the global population. Across a fragmented range, 400 PAs are estimated to contain 1893 WhV nests. Eastern Africa is estimated to contain 721 nests, Central Africa 548 nests, Southern Africa 468 nests, and West Africa 156 nests. Including immature and nonbreeding birds, and accounting for data deficient PAs, the estimated global population is 5475 - 5493 birds. The identified distribution highlights are alarming: over 78% (n = 313) of identified PAs contain fewer than five nests. A further 17% (n = 68) of PAs contain 5 - 20 nests and 4% (n = 14) of identified PAs are estimated to contain >20 nests. Just 1% (n = 5) of PAs are estimated to contain >40 nests; none is located in West Africa. Whilst ranging behavior of WhVs is currently unknown, 35% of PAs large enough to hold >20 nests are isolated by more than 100 km from other PAs. Spatially discrete and unpredictable mortality events such as poisoning pose major threats to small localized vulture populations and will accelerate ongoing local extinctions. Apart from reducing the threat of poisoning events, conservation actions promoting linkages between protected areas should be pursued. Identifying potential areas for assisted re-establishment via translocation offers the potential to expand the range of this species and alleviate risk.

The SPARC Data Initiative: comparisons of CFC-11, CFC-12, HF and SF6 climatologies from international satellite limb sounders

A quality assessment of the CFC-11 (CCl3F), CFC-12 (CCl2F2), HF, and SF6 products from limb-viewing satellite instruments is provided by means of a detailed intercomparison. The climatologies in the form of monthly zonal mean time series are obtained from HALOE, MIPAS, ACE-FTS, and HIRDLS within the time period 1991–2010. The intercomparisons focus on the mean biases of the monthly and annual zonal mean fields and aim to identify their vertical, latitudinal and temporal structure. The CFC evaluations (based on MIPAS, ACE-FTS and HIRDLS) reveal that the uncertainty in our knowledge of the atmospheric CFC-11 and CFC-12 mean state, as given by satellite data sets, is smallest in the tropics and mid-latitudes at altitudes below 50 and 20 hPa, respectively, with a 1σ multi-instrument spread of up to ±5 %. For HF, the situation is reversed. The two available data sets (HALOE and ACE-FTS) agree well above 100 hPa, with a spread in this region of ±5 to ±10 %, while at altitudes below 100 hPa the HF annual mean state is less well known, with a spread ±30 % and larger. The atmospheric SF6 annual mean states derived from two satellite data sets (MIPAS and ACE-FTS) show only very small differences with a spread of less than ±5 % and often below ±2.5 %. While the overall agreement among the climatological data sets is very good for large parts of the upper troposphere and lower stratosphere (CFCs, SF6) or middle stratosphere (HF), individual discrepancies have been identified. Pronounced deviations between the instrument climatologies exist for particular atmospheric regions which differ from gas to gas. Notable features are differently shaped isopleths in the subtropics, deviations in the vertical gradients in the lower stratosphere and in the meridional gradients in the upper troposphere, and inconsistencies in the seasonal cycle. Additionally, long-term drifts between the instruments have been identified for the CFC-11 and CFC-12 time series. The evaluations as a whole provide guidance on what data sets are the most reliable for applications such as studies of atmospheric transport and variability, model–measurement comparisons and detection of long-term trends. The data sets will be publicly available from the SPARC Data Centre and through PANGAEA (doi:10.1594/PANGAEA.849223).

The global-scale impacts of climate change: the QUEST-GSI project

This paper introduces the special issue of Climatic Change on the QUEST-GSI project, a global-scale multi-sectoral assessment of the impacts of climate change. The project used multiple climate models to characterise plausible climate futures with consistent baseline climate and socio-economic data and consistent assumptions, together with a suite of global-scale sectoral impacts models. It estimated impacts across sectors under specific SRES emissions scenarios, and also constructed functions relating impact to change in global mean surface temperature. This paper summarises the objectives of the project and its overall methodology, outlines how the project approach has been used in subsequent policy-relevant assessments of future climate change under different emissions futures, and summarises the general lessons learnt in the project about model validation and the presentation of multi-sector, multi-region impact assessments and their associated uncertainties to different audiences.

Invasive plants: representativeness of research from tropical countries in the global context

Biological invasions threaten the native biota of several countries and this threat is even greater in the tropical regions that have the greatest biodiversity. In order to evaluate the representativeness of studies on invasive plants in tropical countries compared to the world, as well as the region of origin and habits of the most reported invasive plants in research, we analyzed the publications from eight of the most important international journals that address the theme, from January 1995 to December 2004. The articles on biological invasions were classified as theoretical or as case studies, and according to their approach, main question, where the study was conducted, region of origin and habit of the invasive plant. Case studies predominated, as did questions about the environment`s susceptibility to the invasion, the species` invasive power and the impacts it had. The most reported invasive species were herbaceous plants from Asia and Europe. Few articles address tropical environments and only one referred to Brazil. Most referred to North America and Europe. This small number of publications in the tropics indicates the need for a global projection on this subject and underscores the lack of consistent and organized data to understand the phenomenon and propose effective strategies to combat biological invasion.

Regularity of solutions on the global attractor for a semilinear damped wave equation

We consider attractors A(eta), eta epsilon [0, 1], corresponding to a singularly perturbed damped wave equation u(tt) + 2 eta A(1/2)u(t) + au(t) + Au = f (u) in H-0(1)(Omega) x L-2 (Omega), where Omega is a bounded smooth domain in R-3. For dissipative nonlinearity f epsilon C-2(R, R) satisfying vertical bar f ``(s)vertical bar <= c(1 + vertical bar s vertical bar) with some c > 0, we prove that the family of attractors {A(eta), eta >= 0} is upper semicontinuous at eta = 0 in H1+s (Omega) x H-s (Omega) for any s epsilon (0, 1). For dissipative f epsilon C-3 (R, R) satisfying lim(vertical bar s vertical bar) (->) (infinity) f ``(s)/s = 0 we prove that the attractor A(0) for the damped wave equation u(tt) + au(t) + Au = f (u) (case eta = 0) is bounded in H-4(Omega) x H-3(Omega) and thus is compact in the Holder spaces C2+mu ((Omega) over bar) x C1+mu((Omega) over bar) for every mu epsilon (0, 1/2). As a consequence of the uniform bounds we obtain that the family of attractors {A(eta), eta epsilon [0, 1]} is upper and lower semicontinuous in C2+mu ((Omega) over bar) x C1+mu ((Omega) over bar) for every mu epsilon (0, 1/2). (c) 2007 Elsevier Inc. All rights reserved.

Effects of the antimicrobial peptide gomesin on the global gene expression profile, virulence and biofilm formation of Xylella fastidiosa

In the xylem vessels of susceptible hosts, such as citrus trees, Xylella fastidiosa forms biofilm-like colonies that can block water transport, which appears to correlate to disease symptoms. Besides aiding host colonization, bacterial biofilms play an important role in resistance against antimicrobial agents, for instance antimicrobial peptides (AMPs). Here, we show that gomesin, a potent AMP from a tarantula spider, modulates X. fastidiosa gene expression profile upon 60 min of treatment with a sublethal concentration. DNA microarray hybridizations revealed that among the upregulated coding sequences, some are related to biofilm production. In addition, we show that the biofilm formed by gomesin-treated bacteria is thicker than that formed by nontreated cells or cells exposed to streptomycin. We have also observed that the treatment of X. fastidiosa with a sublethal concentration of gomesin before inoculation in tobacco plants correlates with a reduction in foliar symptoms, an effect possibly due to the trapping of bacterial cells to fewer xylem vessels, given the enhancement in biofilm production. These results warrant further investigation of how X. fastidiosa would respond to the AMPs produced by citrus endophytes and by the insect vector, leading to a better understanding of the mechanism of action of these molecules on bacterial virulence.

E-learning opens the door to the global community. Novice users experiences of e-learning in a Somali University

E-learning has become one of the primary ways of delivering education around the globe. In Somalia, which is a country torn within and from the global community by a prolonged civil war, University of Hargeisa has in collaboration with Dalarna University in Sweden adopted, for the first time, e-learning. This study explores barriers and facilitators to e-learning usage, experienced by students in Somalia’s higher education, using the University of Hargeisa as case study. Interviews were conducted with students to explore how University of Hargeisa’s novice users perceived elearning, and what factors positively and negatively affected their e-learning experiences. The Unified Theory of Acceptance and Use of Technology (UTAUT) model was used as a framework for interpreting the results. The findings show that, in general, the students have a very positive attitude towards e-learning, and they perceived that e-learning enhanced their educational experience. The communication aspect was found to be especially important for Somali students, as it facilitated a feeling of belonging to the global community of students and scholars and alleviated the war-torn country’s isolation. However, some socio-cultural aspects of students’ communities negatively affected their e-learning experience. This study ends with recommendations based on the empirical findings to promote the use and enhance the experience of e-learning in post conflict Somali educational institutions

Making the Global Vision Real: Supporting Faculty-Led Internationalization Efforts

As colleges and universities make increasing global engagement a top institutional priority, many have struggled to manage rising levels of international activity. Council research finds that the challenge lies not in convincing faculty to expend more effort but instead in reducing the level of effort required by faculty who are already interested in promoting international activities. This study provides detailed case studies and toolkits for administrative core competencies for increased global engagement. Chapter 2 (page 39) details strategies to promote faculty-led study abroad programs, which constitute the fastest growing study abroad experience. Chapter 5 (page 111) outlines recommendations to build strategic international partnerships that engage the entire campus.

The global financial crisis and after: a new capitalism?

The 2008 global financial crisis was the consequence of the process of financialization, or the creation of massive fictitious financial wealth, that began in the 1980s, and of the hegemony of a reactionary ideology, namely, neoliberalism, based on selfregulated and efficient markets. Although capitalism is intrinsically unstable, the lessons from the stock-market crash of 1929 and the Great Depression of the 1930s were transformed into theories and institutions or regulations that led to the “30 glorious years of capitalism” (1948–77) and that could have avoided a financial crisis as profound as the present one. It did not because a coalition of rentiers and “financists” achieved hegemony and, while deregulating the existing financial operations, refused to regulate the financial innovations that made these markets even more risky. Neoclassical economics played the role of a meta-ideology as it legitimized, mathematically and “scientifically”, neoliberal ideology and deregulation. From this crisis a new capitalism will emerge, though its character is difficult to predict. It will not be financialized but the tendencies present in the 30 glorious years toward global and knowledge-based capitalism, where professionals will have more say than rentier capitalists, as well as the tendency to improve democracy by making it more social and participative, will be resumed.

The Free Trade Area of the Americas : positive outcomes for Brazil and the global community

This document discusses Brazil and the Free Trade Area of the Americas (FTAA). Since the FTAA is only a proposed agreement and trade apparatus at the moment, NAFTA is used as a working model and its influence on and benefit for Mexico and that country’s economy.

Responsabilidade socioambiental: a divulgação de relatórios na América Latina

Este trabalho tem o objetivo de analisar comparativamente as informações socioambientais divulgadas pelas companhias latino-americanas nos seus relatórios. Foi efetuada uma análise de conteúdo das informações socioambientais divulgadas por uma amostra de 226 organizações, no período de 2004 a 2009, segregadas por país, empresa, setor e ano. Foram utilizadas as diretrizes voluntárias da Global Reporting Initiative como escopo para analisar o conteúdo dos relatórios anuais, relatórios de sustentabilidade e Formulários 20F, disponibilizados pelas organizações, nos seus websites ou nas bolsas de valores em que negociam suas ações. A maioria das companhias de capital aberto na região não disponibiliza informações socioambientais nos seus relatórios anuais ou em relatórios específicos sobre o tema. No âmbito das multinacionais que operam na América Latina e que foram selecionadas para este estudo, percebeu-se maior concentração dessas na Argentina, Chile e Peru e foram as companhias que mais divulgaram informações socioambientais nos relatórios analisados nesses países. Entre os países latino-americanos, verificou-se que o nível de aderência às diretrizes voluntárias de divulgação de informações socioambientais é baixo, mas as companhias estabelecidas no Brasil são as que têm maior e melhor nível de aderência a tais diretrizes. O referencial teórico indicou as várias influências históricas que contribuíram para esse resultado, como a organização e adesão do setor empresarial à questão socioambiental, além do apoio de ONGs que se especializaram em difundir o tema. O Instituto Ethos de Empresas e Responsabilidade Social, além de outras entidades, como IBASE e GIFE, exerceram e exercem importante papel na difusão e profissionalização das ações socioambientais das companhias brasileiras. Nos demais países, o assunto ainda é incipiente, apesar de haver várias instituições locais voltadas para a participação empresarial na elaboração e divulgação de relatórios voltados para o tema, o assunto começou a ser amplamente divulgado há poucos anos. As companhias que compuseram a amostra deste trabalho estão entre as de maior porte dos seus respectivos países. No caso do Brasil e do México, a indústria local tem sua maneira própria de elaborar ações socioambientais, bem como, divulgá-las em relatórios específicos. Quanto à evolução e forma de divulgação de informações socioambientais, tem-se o relatório anual como o principal canal utilizado pelas companhias para destacar tais informações, seguido do relatório de sustentabilidade, divulgado como parte do relatório anual, ou como uma publicação específica.

When a local competitor (slightly) shakes up the global giant: a case on the soft drink market

As marcas globais mantiveram muita atenção no campo do marketing (Kotler, 1997; Holt, Quelch, e Taylor, 2004; Özsomer e Altaras, 2008), enquanto as marcas locais foram subestimadas (Ger, 1999; Schuiling e Kapferer, 2004). No entanto, o debate adaptação contra padronização foi amplamente discutido. Centra-se na definição de como uma empresa internacional deve construir a sua estratégia: ao padronizar sua estratégia de marketing ou, adaptando para melhor atender a cultura e às necessidades locais (Levitt, 1983; Subhash, 1989; Herbig, 1998; Holt, 2004; Melewar e Vemmervik , 2004; Heerden e Barter, 2008). No entanto, este assunto não foi discutido no contexto específico do consumo alternativo oferecido por concorrentes locais específicos. Hoje em dia, um aumento na oferta de produtos alternativos é observado. O consumo socialmente responsável está crescendo (Sen e Bhattacharya, 2001; Holt, 2002; Loureiro, 2002; François-Lecompte e Valette-Florence, 2006). O mercado dos refrigerantes de cola é de interesse particular. Colas alternativas são refrigerantes de cola que surgiram durante a última década em algumas regiões ou zonas específicas do mundo. Estas colas claramente posicionam-se como uma alternativa ao refrigerante global Coca-Cola. A alternativa não é baseada no preço mas nas características especiais dos produtos que constituem uma proposição de valor específica, diferente da Coca-Cola. Na França, desde uma década, o número de colas regionais aumentou, sendo mais de quinze hoje. O refregirante Breizh Cola foi lançado em 2002 e atinge quase uma quota de mercado de 10% na região Bretanha hoje. Em 2009, a Coca-Cola Entreprise iniciou uma campanha de marketing específica, na Bretanha, baseada em recursos visuais e parcerias regionais. Este caso de adaptação em um contexto de concorrência local específico é explorado nesta dissertação que incide sobre as razões da preferência para Breizh Cola, de um lado, e sobre as acções empreendidas pela Coca-Cola na Bretanha, do outro lado. Este estudo mostra que a Coca-Cola anda nos passos de Breizh Cola, a fim de melhor atender às expectativas local.

The influence of the global crisis on the slowdown of the emerging markets

A presente dissertação investiga a relação empírica entre a crise financeira de 2007-2009, a crise da dívida soberana de 2010-2012 e a recente desaceleração dos mercados de capitais nos mercados emergentes. A exposição dos mercados emergentes à crise nos desenvolvidos é quantificada através de um modelo de interdependência de factores. Os resultados mostram que estes sofreram, de facto, um choque provocado por ambas as crises. No entanto, este foi um choque de curta duração enquanto os mercados desenvolvidos ainda lutavam com as consequências resultantes das sucessivas crises financeiras. A análise do modelo mostra ainda que após a crise da divida soberana, enquanto os mercados desenvolvidos iniciam a sua recuperação, os emergentes desaceleram o seu crescimento. De forma a completar a análise do modelo foi efectuado um estudo sobre a influência dos fluxos de capitais entre os mercados emergentes e desenvolvidos na direcção do seu crescimento, revelando que existe uma relação entre estes dois eventos.