Biodiversity Impact of Green Roofs and Constructed Wetlands as Progressive Eco-Technologies in Urban Areas

The total amount of sealed surfaces is increasing in many urban areas, which presents a challenge for sewerage systems and wastewater treatment plants when extreme rainfall events occur. One promising solution approach is the application of decentralized eco-technologies for water management such as green roofs and constructed wetlands, which also have the potential to improve urban biodiversity. We review the effects of these two eco-technologies on species richness, abundance and other facets of biodiversity (e.g., functional diversity). We find that while green roofs support fewer species than ground-level habitats and thus are not a substitute for the latter, the increase in green roof structural diversity supports species richness. Species abundance benefits from improved roof conditions (e.g., increased substrate depth). Few studies have investigated the functional diversity of green roofs so far, but the typical traits of green roof species have been identified. The biodiversity of animals in constructed wetlands can be improved by applying animal-aided design rather than by solely considering engineering requirements. For example, flat and barrier-free shore areas, diverse vegetation, and heterogeneous surroundings increase the attractiveness of constructed wetlands for a range of animals. We suggest that by combining and making increasing use of these two eco-technologies in urban areas, biodiversity will benefit

The Use of Diverse Young Adult Literature in High School Classrooms

This departmental honors project outlined research that has been completed on the benefits of incorporating young adult literature in the secondary English Language Arts classroom and discussed the benefits of using young adult literature as a means of introducing students to various aspects of diversity. While young adult literature continues to grow in popularity among teen readers, there are many negative connotations associated with texts falling under this label and their merit within the classroom. Similarly, classroom dynamics are becoming more diverse each year through the number of students representing different races, ethnicities, ability levels, interests, socioeconomic backgrounds, genders, and more. However, there is very little quantitative or qualitative research on how young adult literature can be used in secondary curricula to engage students in assigned reading and to increase students’ exposure to facets of diversity. Thus, this study aimed to reveal how a sample of secondary English Language Arts educators perceives young adult literature, how it is being used in the classroom, the challenges that teachers face when attempting to include it in the curriculum, and the extent to which teachers are addressing facets of diversity in their classrooms

The Use of Diverse Young Adult Literature in High School Classrooms

This departmental honors project outlined research that has been completed on the benefits of incorporating young adult literature in the secondary English Language Arts classroom and discussed the benefits of using young adult literature as a means of introducing students to various aspects of diversity. While young adult literature continues to grow in popularity among teen readers, there are many negative connotations associated with texts falling under this label and their merit within the classroom. Similarly, classroom dynamics are becoming more diverse each year through the number of students representing different races, ethnicities, ability levels, interests, socioeconomic backgrounds, genders, and more. However, there is very little quantitative or qualitative research on how young adult literature can be used in secondary curricula to engage students in assigned reading and to increase students’ exposure to facets of diversity. Thus, this study aimed to reveal how a sample of secondary English Language Arts educators perceives young adult literature, how it is being used in the classroom, the challenges that teachers face when attempting to include it in the curriculum, and the extent to which teachers are addressing facets of diversity in their classrooms

The ternary diagram of functional diversity

Among the many diversity indices in the ecologist toolbox, measures that can be partitioned into additive terms are particularly useful as the different components can be related to different ecological processes shaping community structure. In this paper, an additive diversity decomposition is proposed to partition the diversity structure of a given community into three complementary fractions: functional diversity, functional redundancy and species dominance. These three components sum up to one. Therefore, they can be used to portray the community structure in a ternary diagram. Since the identification of community-level patterns is an essential step to investigate the main drivers of species coexistence, the ternary diagram of functional diversity can be used to relate different facets of diversity to community assembly processes more exhaustively than looking only at one index at a time. The value of the proposed diversity decomposition is demonstrated by the analysis of actual abundance data on plant assemblages sampled in grazed and ungrazed grasslands in Tuscany (Central Italy)

Combining Biological Approaches to Shed Light on the Evolution of Edible Bananas

researchDeciphering the diversity of the banana complex needs a joint characterization and analysis of the original wild species and their relatives, primitive diploid forms and triploid derived varieties. Sexuality, the primary source of diversity, is strongly disrupted in the cultivated varieties (sterility, parthenocarpy and vegetative propagation) by human selection of vegetatively maintained punctuated mutations. Many biological tools are available for characterizing this diversity, each one illustrating some peculiar facets, and we show that their joint analysis enables an evolutionary reading of this diversity. We propose various scenarios regarding the structure of wild species, on the domestication of the edible diploids from hybrids between wild forms, on the direct ancestry of triploids from cultivated diploids, and on the ancient migrations dispersing cultivated forms around the world. The comparison with data from archaeology, linguistics and human genetics will enable the validation, refinement and dating of the proposed domestication process

The languages of Vanuatu: Unity and diversity

With an estimated 138 different indigenous languages, Vanuatu is the country with the highest linguistic density in the world. While they all belong to the Oceanic family, these languages have evolved in three millennia, from what was once a unified dialect network, to the mosaic of different languages that we know today. In this respect, Vanuatu constitutes a valuable laboratory for exploring the ways in which linguistic diversity can emerge out of former unity. This volume represents the first collective book dedicated solely to the languages of this archipelago, and to the various forms taken by their diversity. Its ten chapters cover a wide range of topics, including verbal aspect, valency, possessive structures, numerals, space systems, oral history and narratives. The languages of Vanuatu: Unity and Diversity provides new insights onto the many facets of Vanuatu’s rich linguistic landscape

The Role of Language in the Media in Influencing Public Perceptions of Refugees

The refugee crisis has become a worldwide epidemic in recent years. As refugee entrance into host countries is debated, media outlets are covering the issue regularly. These media outlets use various types of language when portraying refugees. Many publications have been found to convey hostile and divisive themes as well as use specific linguistic tools, which contribute to negative portrayals of refugees. Media outlets have the potential to influence public perceptions of refugees because the general public in a host country receives its information primarily from the media. Overt and subtle language used to describe refugees has been previously found to influence public opinions. This study of 101 students at a conservative Christian university in the mid-Atlantic United States was designed to examine whether manipulated language in news articles impacted perceptions of refugees. Participants were randomly assigned to the positive or negative language condition and then asked to complete a survey assessing four facets of perception. None of the results were significant, indicating the language in the article did not impact perceptions of refugees. This study was limited by lack of diversity in the sample, the use of self-report data, potential personal confounds, and a small sample size. The results implied a need for balance when calling for media ethics and a need for many more empirical studies in this area

Nuclear Astrophysics

Nuclear astrophysics is that branch of astrophysics which helps understanding some of the many facets of the Universe through the knowledge of the microcosm of the atomic nucleus. In the last decades much advance has been made in nuclear astrophysics thanks to the sometimes spectacular progress in the modelling of the structure and evolution of the stars, in the quality and diversity of the astronomical observations, as well as in the experimental and theoretical understanding of the atomic nucleus and of its spontaneous or induced transformations. Developments in other sub-fields of physics and chemistry have also contributed to that advance. Many long-standing problems remain to be solved, however, and the theoretical understanding of a large variety of observational facts needs to be put on safer grounds. In addition, new questions are continuously emerging, and new facts endanger old ideas. This review shows that astrophysics has been, and still is, highly demanding to nuclear physics in both its experimental and theoretical components. On top of the fact that large varieties of nuclei have to be dealt with, these nuclei are immersed in highly unusual environments which may have a significant impact on their static properties, the diversity of their transmutation modes, and on the probabilities of these modes. In order to have a chance of solving some of the problems nuclear astrophysics is facing, the astrophysicists and nuclear physicists are obviously bound to put their competence in common, and have sometimes to benefit from the help of other fields of physics, like particle physics, plasma physics or solid-state physics.Comment: LaTeX2e with iopart.cls, 84 pages, 19 figures (graphicx package), 374 updated references. Published in Reports on Progress in Physics, vol.62, pp. 395-464 (1999

An overview of the current research on epiphyte ecology

Epiphytes are non-parasitic, photosynthetic organisms that depend on other photosynthetic host organisms for support. Epiphytes can be found both in aquatic and terrestrial habitats. The interactions between epiphytes and their hosts can vary based on both their habitat and the features of individual hosts. This review explores the many facets of epiphyte research, including: the diversity of epiphytes in aquatic and terrestrial habitats; the effects of host-epiphyte interactions on the hosts; and the abiotic and biotic interactions that together determine epiphyte community composition