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1.
This study investigated the establishment dynamics of strangler figs and the constraints on their development in the urban parklands of Brisbane, Queensland, Australia. Of 3580 trees and palms in the study parks, approximately 5% support at least one Ficus species. Six Ficus species occur epiphytically in older parkland. Four are Brisbane natives: F. macrophylla, F. obliqua, F. platypoda and F. virens; and two are from elsewhere in Australia: F. benjamina and F. rubiginosa. A lack of pollinator wasps in the Brisbane area prevents exotic and other native Ficus spp. from reproducing. Though they form predominantly open communities, the percentage of phorophytes (support trees) in the study parks is similar to that associated with natural, closed communities. Ficus spp. become established in structural features that accumulate humic soil, such as the forks of trunks and branches on trees, and behind marcescent leaf bases on palms. Plants with few humus pockets support few Ficus species. Environmental factors such as atmospheric quality, canopy shade, bark texture and whether or not a park is irrigated, seem not to be consequential to Ficus establishment. Significantly greater numbers of Ficus occur on deciduous trees, perhaps because avian seed dispersers favour them as perches over evergreen trees. Ficus also occur significantly more frequently on the western sides of palms with marcescent leaf bases. These western flanks offer shelter from the prevailing sea breezes: fewer Ficus are therefore likely to be torn from these sides in strong winds.  相似文献   

2.
For over a century, The Times Atlas of the World has been a trusted and valued guide to study of the world's geography. For eighty of these 100 years, production of this work has been carried out in Scotland, following in the tradition of Scottish cartographic publishing. In relation to other work on the history of the atlas, and the history of geographical publishing in Scotland, this paper examines the development of the Times Atlas from its first edition in 1895 and considers the challenges posed to atlas production and publishing by the digital age.  相似文献   

3.
Information about plant materials of construction in artefacts advances knowledge about human history, agriculture, trade, migration and adaptation to new environments. Typically, materials identification in artefacts made from plants is problematic, since processing, age, dirt and surface treatments can mask identifying features, while ethical considerations relating to sampling limit the use of some analytical techniques. The study tests the usefulness of polarized light microscopy for identifying the New Zealand and Pacific plant species used to make tapa, indicating birefringent and morphological characteristics that can be used to differentiate fibres at the level Moraceae (Pacific; from genera Artocarpus, Broussonetia and Ficus) and Malvaceae (New Zealand; from genera Hoheria and Plangianthus).  相似文献   

4.
The biogeography and historical distribution of various plants often depend as much on the environmental tolerance of their pollinators as they do on the tolerance of the plant. A four year, phenological study of 35 trees from six Ficus species was carried out in Brisbane's Central Business District. The presence of syconia (figs) and their sexual phases was recorded monthly for each tree. All six species bore ‘female’ phase syconia randomly in any month. The presence of ‘male’ phase syconia was seasonal for Ficus benjamina, Ficus microcarpa and Ficus virens. It was less seasonal for Ficus obliqua and Ficus rubiginosa. Ficus macrophylla exhibited aseasonal distribution of ‘male’ phase syconia. Symbiont pollinator wasp mortality was the cause of the skew in the seasonal distribution of ‘male’ phase syconia. Ficus benjamina, F. microcarpa and F. virens seldom had ‘male’ and ‘female’ phase syconia concurrently on an individual tree, while F. macrophylla and F. obliqua often did. Ficus rubiginosa was intermediate between the two groups. Intra‐tree overlap of syconia in both sexual phases permits short dispersal flights by pollinators and is advantageous to their survival during the cooler months. The pollinators of F. benjamina, F. microcarpa and F. virens, historically tropical and tropical/subtropical species, are unlikely to establish in temperate areas due to high winter mortality rates. The other three Ficus species historically occurred in temperate climates and the pollinators of two, F. macrophylla and F. rubiginosa, are extending their range into temperate Australia and New Zealand. The pollination biology of Ficus spp. will thus be a determining factor in whether a species is able to naturalise or become invasive in a location that experiences a particular climate, or if it is safe to use as a horticultural amenity species.  相似文献   

5.
European forests have been copiously documented for centuries. However, forest-related archival sources were rarely utilised to their full potential, mainly because of the difficulties in producing compatible data from large amounts of very different sources. Furthermore, analysing such data for larger areas in high resolution was hardly possible prior to the emergence of historical GIS. This paper presents the geodatabase of the LONGWOOD project, which includes tens of thousands of pieces of information on forest history from the 11th to the 20th century for 3,567 townships in the eastern Czech Republic (c. 27,000 km2). The paper describes the challenges we met, briefly summarizes the results, evaluates the database in a worldwide context and introduces possible directions for future research.  相似文献   

6.
In the literature, the ‘Overview Maps of Imperial Territories’ or Huangyu quanlan tu 皇輿全覽圖, is mostly referred to as ‘the Jesuit atlas of China’. The reason is that this early eighteenth-century atlas of all Qing China’s territories plus Korea and Tibet is assumed to have resulted from European missionaries importing European cartographic practices. In this essay, I argue that this view is outdated and can no longer be sustained. By revisiting the background of the missionaries’ involvement in cartographic exchanges between Asia and Europe, the techniques used for surveying Qing territories and the production of the resulting atlases, I show that the mapping project behind the ‘Overview Maps of Imperial Territories’ is best understood as a creative answer to the unique needs of Qing frontier management and imperial control, made possible by the integration, in mensurational and in representational terms, of European and East Asian cartographic practices.  相似文献   

7.
Abstract

The restoration of areas contaminated by industrial or mining activities has been a major issue in environmental research in many European countries since the 1980s, and it also constitutes a major area of research at the Helmholtz Centre for Environmental Research — UFZ. Within this research environment, a consortium consisting of natural and social scientists has developed an EU-funded research project aimed at providing problem- oriented, tailored approaches and technologies for the revitalization of contaminated areas. The approach taken by the project is one that seeks to integrate scientific and non-scientific knowledge. In this paper we show how the idea of joint knowledge production between scientists and non-scientists is pursued in the context of the project. We explore how the rather fuzzy presentation of the transdisciplinary approach in the project proposal opens the door to interpretation and appropriation by scientists and practitioners alike. We describe a number of ad hoc solutions that were deployed to overcome specific dissonances during the collaborative production of knowledge (e.g. substituting common group learning for the single-handed elaboration of concepts by one project partner, or substituting the consultation of external experts for the mere gathering of information). Finally, we show how the interdisciplinary research environment at UFZ enhances the ability of the project team to resolve dissonances, improves collaboration between partners, and increases the innovative potential of project outputs.  相似文献   

8.
ABSTRACT

Aberdeen University has a long history of using aerial photography, photogrammetry, cartography, remote sensing and surveying in Geography teaching and research. The development of an MSc in Environmental Remote Sensing (ERS) in 1987 offered students a new opportunity to specialise further in this rapidly evolving area of technology. The programme has continued to thrive and the MSc in GIS celebrated its 30th Anniversary in 2017. Recently the degree has included courses on current applications of GIS and web-GIS. The introduction of UAV (Unmanned Aerial Vehicle) remote sensing broadened the appeal and competitiveness of the degree, ensuring students have access to cutting edge remote sensing technology. Alongside PhD studies, applied academic research in the Aberdeen Institute for Coastal Science and Management (AICSM), and the Unmanned Airborne Vehicle (UAV)/Unmanned Airborne System (UAS) Centre for Environmental Monitoring and Mapping (UCEMM), make widespread use of GIS and remote sensing. As the geospatial technologies continue to evolve and are integrated with drones the role of education, training and research utilising these technologies will become integral to the Geography degree. Geospatial technologies have and will continue to provide valuable tools and techniques for graduates.  相似文献   

9.
Geographical Information Systems (GIS) provide an essential element in modern paleoanthropological inquiry through their ability to integrate a diverse range of data within a multidimensional spatial framework which can be used for data storage, analysis and modeling. One of the challenges of creating such a framework is the integration of legacy and new data (collected with digital technologies) at large sites with a long history of research. The Sterkfontein Caves, located in the Cradle of Humankind, is the richest Australopithecus-bearing locality in the world and has been the focus of intense palaeoanthropological research for the past 80 years. A diverse range of spatial data has been collected over this history and future integrative research necessitates the development of a unified, cohesive 3D GIS framework. In this paper we describe three phases of work undertaken to implement such a framework and discuss the next steps in its development and utilization for spatial analyses.  相似文献   

10.
Reef, range and red dust are the ‘three Rs’ which sum up the geography of Queensland. The recently-completed state atlas, a joint venture of the Premier's and Lands Departments, was charged with capturing the physical and human aspects of this vast area. This paper recounts the background, decisions, controversies and some technicalities inherent in its production. No human hands, save those of graphic artists, touched the paper of the atlas: it was completely computer drawn and composed. Over 80 external authors were involved. The project took four and a half years and follows a series of other Australian state atlases. In a departure from their tradition, it adopts a ‘popular’ format using techniques more commonly associated with business magazines.  相似文献   

11.
There have been a number of important efforts to map out the languages of Iran, but until now no language atlas, or even a comprehensive and detailed country-level language map, has been produced. One of the recent initiatives which aims to fill this gap is the online Atlas of the Languages of Iran (ALI) (http://iranatlas.net). This article delineates objectives of the ALI research programme, atlas architecture, research methodology, and preliminary results that have been generated. Specific topics of interest are the structure and content of the linguistic data questionnaire; the handling of contrasting perspectives about the status of “languages” and “dialects” through a flexible multi-dimensional classification web; and the role of ongoing comparisons between language distribution assessments and hard linguistic data.  相似文献   

12.
13.
Abstract

This article reflects critically on how forms of militant research that produce knowledge about the border can produce effects in the politics of migration themselves. It does so by looking at Forensic Oceanography, a collaborative research project that we have been conducting since the summer of 2011. We first locate this research among a broader ‘ecology of knowledges’ that are generated at the border and that directly affect way the border regime actually operates, underlining their ‘aesthetic’ dimension. Secondly, we problematise more specifically the knowledge produced by activists who fight against the border regime and attempt to think how these need to position themselves strategically in relation to existing knowledge practices so as to avoid complicity with the same power structures they are seeking to challenge. Finally, since our knowledge production has amongst others been geared towards the legal sphere, we sketch out a critical reflection on the reliance on legal strategy to forward progressive changes within the politics of migration.  相似文献   

14.
Examining Gender and Community Through Critical Pedagogy   总被引:1,自引:0,他引:1  

A growing body of literature in critical geography challenges authoritative approaches to the production (and consumption) of knowledge in higher education. Feminist perspectives have contributed to this literature by emphasising the multiple and often conflicting voices of subjects, including those within the classroom. This paper draws from critical and feminist pedagogy in geography to examine student engagement with gender issues in the community. The case study for this analysis is a project in which students volunteer at community organisations and construct their own knowledges of social and political issues.  相似文献   

15.
Abstract

This article aims to establish a connection between (a) the identification of heritage and measures for its protection, and (b) the collection and dissemination of scientific information, as set out in the Treaty of Valletta. This is illustrated through research conducted at the Asklepieion of Kos, which led to an anastylosis project on the Roman temple, within a wider project to re-organize the entire area of the sanctuary. The paper highlights the development of the project, including traditional methods of direct survey (manual and digital), a database of the three-dimension models of the single architectural elements of the temple, and a CAD/CAM model of the reconstruction project.  相似文献   

16.
The present contribution informs about the project “Retrospective digitization of selected emblem books of the early modern period” supported by the Deutsche Forschungsgemeinschaft (German Research Foundation). The first part aims at a definition of the genre and at a presentation of its sources. In addition, it gives a brief abstract of the history of research and proves the interdisciplinarity of this subject. The second part describes the project's development and the conception of the Munich emblem database.  相似文献   

17.

Native place names are landmarks which may provide quantitative and qualitative evidence usefully referred to for the land claims question. This paper describes the context and the method of a research project which draws from the lower Mackenzie Valley toponymic data of the last century some useful conclusions related to the actual native land claims in that region.  相似文献   

18.
Abstract

In this paper we reflect on some instruments to interrupt the governmentalization of knowledge production at play in migration studies – mainstream, critical, and radical alike. We take knowledge production as the struggle-field where confronting, resisting, and interrupting the disciplining of migrations that arises from their academic and governmental incorporation as objects (of research and of policies). In contrast, we sketch a political epistemology of migrations, asking: which knowledge practices and interventions account for the contestedness migrations spark, and for the turbulence, excess, and upheavals migrants trigger? The paper discusses two of such paths. First, we sketch an approach to research that works ‘within and against’ the distances that perform and define migration field-sites and their pristine subject positions; second, we argue for the development and deployment of interruptions against those unquestioned chains of equivalences that are embedded in migration knowledge. Building on our engagement with Libyan war refugees in Tunisia and in Italy, we reflect on how these instruments somehow bring scholarly knowledge to its limits while working within its premises.  相似文献   

19.
This paper analyses the relationship between knowledge production and urban locations in industrial design, a knowledge-intensive business service (KIBS). KIBS concentrate in urban locations. This is often explained by the co-location of client firms and market access in large cities. Recent research on knowledge production, however, reveals that knowledge productive networks are significant for both the competitiveness and location of KIBS. Thus, to understand the urban location of industrial design, it is important to analyse how knowledge production is organized within the industry. Industrial design is concentrated in urban locations, but most of its clients are located elsewhere. Hence, it seems that industrial design firms concentrate in urban locations mainly because their knowledge networks include specific types of formal and informal local social networks.  相似文献   

20.
This paper uses zone electrophoresis, one of the most frequently used tools in molecular biology, to explore two ideas derived from Hans-Jörg Rheinberger's reflections on experiments. First, the constraining role played by technical objects—instrumentation and material conditions—in the production of knowledge or epistemic things. Second, the production of interconnected experimental systems by such technical objects, which results in the unexpected entanglement of research fields and experimental cultures. By the beginning of the 1960s, the inception of zone electrophoresis in laboratories around the world transformed—some say, revolutionized—the study of proteins. Even today, electrophoresis continues to open research venues and questions in biomedicine, molecular biology, human genetics, and in the field of molecular evolution. In my essay, I seek to look at the interconnected lives of zone electrophoresis and address the broader social, and even global context, in which this apparently humble technique became a salient tool in the production of biological knowledge. In so doing, I aim to take the past and present of the history and historiography of experimental systems to the future, where experiments and technologies are interrogated as they are used in different geographies and contexts, including contexts of poverty.  相似文献   

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