Plant communities of mires in the western part of the Krkonoše mountains,Czechoslovakia

Mire plant communities of the W. Krkono?e mountains may be grouped in 11 associations and 3 alliances:Caricion canescentis-fuscae, Rhynchosporion albae andOxycocco-Empetrion hermaphroditi. The ecology, structure and geographical distribution of the communities, as well as the ecology of the species occurring in them are discussed.     

Distribution of macroinvertebrates in the shallow part of ‘De Gijster’, a water storage lake in the Biesbosch (The Netherlands)

The composition and distribution of the macroinvertebrate fauna of the shallow part of De Gijster, a medium sized water storage lake in The Netherlands, has been studied during 1984. The numerous individuals collected belong mainly to the Oligochaeta, Diptera (Chironomidae larvae) and Mollusca. Amongst them are elements of both the former polder fauna and the river fauna. A quantitative analysis revealed data on the horizontal distribution of several taxa within the lake as well as data on the influence of the lifecycle of some taxa on the annual composition of the fauna.     

Plant regeneration of red raspberry (Rubus idaeus) cultivars ‘Joan J’ and ‘Polana’

In Vitro Cellular & Developmental Biology - Plant - Plants were regenerated from in vitro leaf and petiole tissues of Rubus spp. L. (red raspberry) ‘Joan J’ and ‘Polana’...     

Induction of Somatic Embryogenesis and Plant Regeneration of ‘Ataulfo’ Mango (Mangifera indica)

Nucellar explants from the immature fruit of Ataulfo mango, 3–4 cm long, were used. The process had a very low efficiency (<10%); however, Ataulfo was more embryogenic than other cultivars such as Tommy Atkins or Haden in our hands. Overall, the process from nucellus to plantlet stage took 5 months. Twelve regenerated plants were obtained and are currently growing in the greenhouse. They appear to be normal and free of abnormalities. Some biochemical and molecular tests are currently being carried out.     

Impacts of abiotic factors on the fungal communities of ‘Honeycrisp’ apples in Canada

The maintenance of the beneficial plant microbiome to control plant pathogens is an emerging concept of disease management, and necessitates a clear understanding of these microbial communities and the environmental factors that affect their diversity and compositional structure. As such, studies investigating the microbiome of economically significant cultivars within each growing region are necessary to develop adequate disease management strategies. Here, we assessed the relative impacts of growing season, management strategy, and geographical location on the fungal microbiome of ‘Honeycrisp’ apples from seven different orchard locations in the Atlantic Maritime Ecozone for two consecutive growing years. Though apple fruit tissue was dominated by relatively few fungal genera, significant changes in their fungal communities were observed as a result of environmental factors, including shifts in genera with plant-associated lifestyles (symbionts and pathogens), such as Aureobasidium, Alternaria, Penicillium, Diplodia, and Mycosphaerella. Variation in fungal composition between different tissues of fruit was also observed. We demonstrate that growing season is the most significant factor affecting fungal community structure and diversity of apple fruit, suggesting that future microbiome studies should take place for multiple growing seasons to better represent the host–microbiome of perennial crops under different environmental conditions.     

‘Captivity bias’ in animal tool use and its implications for the evolution of hominin technology

Animals in captive or laboratory settings may outperform wild animals of the same species in both frequency and diversity of tool use, a phenomenon here termed ‘captivity bias’. Although speculative at this stage, a logical conclusion from this concept is that animals whose tool-use behaviour is observed solely under natural conditions may be judged cognitively or physically inferior than if they had also been tested or observed under controlled captive conditions. In turn, this situation creates a potential problem for studies of the behaviour of extinct members of the human family tree—the hominins—as hominin cognitive abilities are often judged on material evidence of tool-use behaviour left in the archaeological record. In this review, potential factors contributing to captivity bias in primates (including increased contact between individuals engaged in tool use, guidance or shaping of tool-use behaviour by other tool-users and increased free time and energy) are identified and assessed for their possible effects on the behaviour of the Late Pleistocene hominin Homo floresiensis. The captivity bias concept provides one way to uncouple hominin tool use from cognition, by considering hominins as subject to the same adaptive influences as other tool-using animals.     

Mg/Ca and δ18O in the brackish shallow-water benthic foraminifer Ammonia ‘beccarii’

Specimens of the benthic foraminifer Ammonia beccarii were cultured in the laboratory in order to determine the relation between temperature and Mg/Ca and oxygen isotope values in their tests. Asexual reproduction in this species provides a large number of juveniles that were allowed to grow into maturity at temperatures ranging from 10 to 27 °C and at salinities ranging from 18 to 33 PSU. The Mg/Ca in a calcite increase exponentially and δ¹⁸O decreases linearly with the temperature. Salinity has no significant impact on either Mg/Ca or δ¹⁸O. We show how the combination of these two parameters can be used to reconstruct seawater δ¹⁸O and temperature in shallow marine habitats.     

‘Horse tripping’: animal welfare laws and the production of ethnic Mexican illegality

Conflicts over animal practices have long been used to construct dynamics of power. This essay examines how debates over immigrant animal practices contribute to the production of immigrant ‘illegality’ in the contemporary USA. I examine laws banning the ‘horse tripping’ events of the Mexican rodeo enacted in California (1994) and Arizona (2009), situating these laws and related media coverage within the broader landscape of exclusionary anti-immigrant politics. While the activists (including Latinos) who supported the bills were primarily concerned with animal welfare, their concerns were marshalled, out of context and against their will, by nativists who demand border militarization, exclusion and deportation. This essay shows that a range of actors – not just notoriously nativist groups but also Latinos themselves, as well as progressive people and organizations – participate, indirectly and inadvertently, in the production of immigrant illegality.     

Don't Blame the ‘Bio’ — Blame the ‘Ethics’: Varieties of (bio) ethics and the challenge of pluralism

We tend to think that the difficulties in bioethics spring from the novel and alarming issues that arise due to discoveries in the new biosciences and biotechnologies. But many of the crucial difficulties in bioethics arise from the assumption we make about ethics. This paper offers a brief overview of bioethics, and relates ethical 'principlism' to 'ethical fundamentalism.' It then reviews some alternative approaches that have emerged during the second phase of bioethics and argues for a neo-Aristotelian approach. Misconceptions about ethical principles and ethical reasoning not only distort our views of the business of bioethics, but they also prevent us from facing up to the formidable problems posed by ethical pluralism in so-called liberal societies.     

Plant landscape and land use at the Neolithic lake settlement of Dispilió (Macedonia,northern Greece)

The Neolithic settlement of Dispilió (lake Orestiás, northern Greece) is a unique site due to its continual inhabitation from the Middle Neolithic (5400 BC) to the Chalcolithic (3600 BC) and its exceptional location at the shore of Lake Orestiás (also known as Lake Kastoria). The plant landscape shaping of the area has been examined by correlating pollen and non-pollen palynomorphs from both on-site and off-site records. The examined pollen profiles bear concrete evidence of agricultural activities and land use in the area. The local pollen assemblages identified, each of them corresponding either to a different kind or intensity of exploitation of natural resources, display the diachronic evolution of the cultural landscape during more than 2000 years of human activity. The successive phases of intense human impact on vegetation patterns are in good accordance with the periods of major constructing activities described by the archaeological study of the Dispilió settlement. Finally, the differences on palynomorph accumulation pathways of the examined records made possible the distinction between local and “regional” plant landscapes and related human activities.     

Molecular studies in Pelargonium (Geraniaceae). A taxonomic appraisal of section Ciconium and the origin of the ‘Zonal’ and ‘Ivy-leaved’ cultivars

An RFLP analysis of chloroplast and nuclear DNA was followed in this taxonomic appraisal of section Ciconium. The section appears to be a monophyletic one, which divides into two groups, or sub-sections. The Zonal Geranium, P. × hortorum is derived from section Ciconium, and the species most likely to be its ancestors are shown to be P. inquinans and P. zonale. Maternal inheritance of chloroplasts was demonstrated by comparing chloroplast DNA from interspecific hybrids with their parents. These data also suggest that P. inquinans was probably the maternal parent of P. × hortorum in the original crosses. The Ivy-leaved cultivars appear to be derived from P. peltatum, with some contribution from P. zonale and/or P. × hortorum.     

Group definition and the idea of ‘race’ in modern China (1793–1949)

This article briefly traces the history of the idea of ‘race’ in modern China. From the nineteenth century onwards, an increasing insistence on biological differences between the ingroup and the outgroup came to contrast with traditional Chinese culturally oriented ethnocentrism. This transition from cultural universalism to racial exclusiveness started during the middle of the nineteenth century and was completed in the 1920s. Four main historical phases can be distinguished: (1) the heightening of a racial consciousness from the Opium War (1842) to the Sino‐Japanese War (1894–5); (2) the emergence of the idea of a yellow race, opposed to a superior white race in its struggle for control over the other races (1895–1902); (3) the development of a nationalistic vision of race, narrowed down to the Han Chinese, perceived as a homogeneous biological unit descended from the Yellow Emperor (1902–15); and (4) the infusion of science into a racial rhetoric that emphasized the original purity, genetic foundation and biological uniqueness of the ingroup in its interpretation of outgroups (1915–49).     

Comparison of ‘ignition’ and ‘extraction’ methods for the determination of organic phosphate in rocks and soils

Summary Ignition markedly increased the solubility in dilute acid of iron- and aluminium-bound inorganic phosphate in samples of weathered New Zealand greywacke rock. This observation supports the view that ignition methods may sometimes overestimate the total organic phosphate of soils.     

‘Time’ and the expression of temporality in eastern Sumba

In this article the author attempts to show the rationale behind the ideology of the Fijian political movement called Taukei, i.e. “owners of the land”. The fundamentalist current within the Fijian political scene in later years has made powerful use of indigenous concepts related to the land (vanua). In contrast to other ethnic groups in the country Fijians consider themselves to be upholders of indisputable moral principles also embraced by the concept vanua. On the one hand their preoccupation with everything that vanua stands for makes Fijians easy prey to political manipulation. On the other hand, the moral standards represented by vanua give them a sense of identity in a situation of rapid social and political change.     

Interscalar maintenance: configuring an Indigenous ‘premium carbon product’ in northern Australia (and beyond)

Mitigating climate change requires us to constrain combustion in a double sense: decreasing both the use of fossil fuels and the flammability of the biosphere. Fire management by Indigenous peoples in Australia's northern savannas has been presented as a solution to offset the former and assist with the latter, leading to the foundation of a regional economy of projects generating ‘premium’ carbon credits on Indigenous lands. This article attends to the translational zone – predominantly made up of non-Indigenous white professionals – that functions to configure the ‘right story’ of these credits across diverse epistemes and contexts. Following such commodities’ interscalar connections, I suggest, helps illustrate the contingencies and contradictions produced by tradeable carbon, as individuals and organizations seek to maintain a niche within a changing climate and shifting global atmospheric relations.