An information systems approach to the preservation of biological diversity

Abstract

Although biological diversity has emerged in the 1980s as a major scientific and political issue, efforts at scientific assessment have been hampered by the lack of cohesive sets of data. We describe, in concept, a comprehensive national diversity information system, using geographical information system (GIS) techniques to organize existing data and improve spatial aspects of the assessment. One potential GIS analysis, to identify gaps in the network of nature reserves for California, is discussed in greater detail. By employing an information systems approach, available data can be used more effectively and better management strategies can be formulated.     

BACKGROUND RECOMMENDATIONS FOR GRADUATE STUDY IN GEOGRAPHY

Research on the diffusion of innovation has been dominated for many years by an approach to scientific reasoning developed most thoroughly and influentially by Hägerstrand. Recently there has been a shift away from this approach. However, this shift has not been previously noted in the literature. After presenting the characteristics of the two perspectives in terms of the instrumentalist and realist conceptions of science, this article provides some evidence for the shift and identifies several key issues for future research.     

The Geopolitical Environment As A Perceptual Environment1

Abstract

The purpose of this paper is to summarize an approach utilized by the author in the presentation of an historical geography course. The course revolved around the establishment of an interacting philosophical and methodological base which reflected a scientific point of view of the field of study. Hopefully, the brief synopsis presented in this paper will be of help to those individuals interested in the teaching of historical geography.     

The application of remote sensing techniques to landscape level environmental research: A hybrid approach combining visual and digital interpretation

The development of new technology for use in environmental research provides us with numerous sophisticated tools such as remote sensing and Geographical Information Systems (GIS). However, throughout recent decades there have been debates regarding the appropriate use of these tools. The question still remains as to whether they can strengthen environmental research, or whether perhaps more conventional methods are better suited? This paper focuses on the use of remote sensing in environmental applications, such as strategic or regional environmental assessments. By providing a case study from Sri Lanka, it is shown how the benefits from a visual interpretation of satellite imagery can be combined with a digital supervised classification in a hybrid approach. The use of these techniques in environmental assessments is further discussed in the light of 'best practicable science' as proposed by the International Association of Impact Assessment (IAIA). The intention is not to discourage the use of digital techniques, but to discuss how they should be utilized to their fullest extent. The approach argued for here provides data of a more general and possibly integrative nature. It may therefore be well suited for the early screening and scoping stages of environmental assessments at a landscape level.     

Interviews and Questionnaires as Mixed Methods in Population Geography: TheCase of Lone Fathers in Newcastle,Australia

A mixed method approach was adopted to study the experiences of lonefathers, using a classic triangulation approach of interview and questionnaire data. This study utilised an empirical realist framework of scientific enquiry, with the ‘soft’ individual interview data seen as an adjunct to the ‘hard’ aggregate quantitative methods. A review of this study found that the interviews worked well as a pilot study in a classic mixed methods framework. The questionnaires provided a range of information about thecharacteristics of this group of lone fathers, but it was the interviews which provided astonishing depth on the causes of marital breakdown and post-marital conflict, and on the discourses and other structures which sustain social processes. In this study, the interview techniques could have been used differently, in a different framework of analysis (that of critical rather than empirical realism) without the support of other mixed methods.     

SOIL QUALITY IN ILLINOIS—AN EXAMPLE OF A SOILS GEOGRAPHY RESOURCE ANALYSIS∗

Although acts of creation, scientific or artistic, result from metaphorical and mythological speculations, the role of metaphor and myth has largely been neglected in attempts to develop a geographical epistemology. The significance of these concepts is illustrated by the use of the frontier symbol as a means of understanding both the social structure of the contemporary black inner city and the temporal dimension of the recent expansion of human activities into nighttime.     

Using Information Technologies for Interactive Learning

Abstract

Experiences in designing, offering, and evaluating joint senior undergraduate course assignments in resource and environmental management on two different occasions, which connected students in two universities in British Columbia and Ontario, are documented. The shared assignments provided students with experience in group work and consensual decision making, and allowed them to use a mix of information technologies (e-mail, chat rooms, the Web, video conferencing). The undergraduate students rated very highly the experience with information technology but found some aspects of a collaborative learning approach to be challenging. The course was less successful than had been anticipated in highlighting different regional perceptions and perspectives regarding resource and environmental problems and solutions. Clarification of objectives and expectations, more attention to allocation of time, and consideration of computer access and assistance would improve the effectiveness of the courses.     

MISCELLANY

The geomorphic sciences will continue to be dynamic in the coming decade. Among other developments, there is a trend toward increased dependence on field reserch, more realistic expectations from reserch tools, a resurgence of interest in man-land relations with a renewed dependence on the historical approach, a reinvestigation of morphogenetic regions, study of planetary surfaces other than earth's, and involvement with applied problems, as well as cooperation and collaboration with scientists in related fields. The greatest need is the development of connections between academic and nonacademic geographers at all levels.     

Guidelines for demonstrating geographical information systems based on participatory development

Abstract

The transfer of GIS technology has not met with uniform success in lesser-developed countries. It has been argued that this may be due to many efforts being technology-driven rather than demand-driven. In agricultural development, technology is transferred through a demand-driven participatory approach which incorporates the ultimate recipients of the technology in the design, implementation and evaluation of projects. A project to demonstrate the use of GIS technology for wasteland development in India involving seven Indian research institutes was undertaken by the U.S. Agency for International Development. In the Indian GIS demonstration, technical approaches proposed by each institute were largely technology-driven. To counter this tendency, a set of evaluation criteria or guidelines based on the participatory approach was developed to refine proposals.     

Understanding Causes of Conflict Over Common Village Pastures – A Comparative Analysis of Property Rights in Azerbaijan and Georgia

Abstract

Conflicts in the management of renewable natural resources are situations in which actors have diverging opinions on issues of natural resource use. In the literature, among the causal factors for conflicts discussed are resource wealth or scarcity and the role of governance. The evidence, however, is contradictory. In order to analyze the role of governance in more detail, we propose a combined analysis of property rights and conflicts. In this way, an improved understanding of the causes of local conflicts over renewable natural resources can be achieved. We use comparative case study data from pasture management in the Caucasus region, first, to classify conflicts according to the bundle of property rights approach and, second, to explore how the causal factors resource scarcity and current governance contribute to those conflicts.     

A Teaching Model of Network Diffusion: the Taiwan Example

Abstract

Inquiry-discovery learning of processes involved in determining transportation patterns form the core of this teaching model. To develop the exercise, a generalized model of route network growth is presented, followed by explanatory models of causation and theory formulation. These suggest hypotheses which are then tested against a real-world example, the evolution of the road network in Taiwan. The model promotes understanding of human behavior and geographic change through systematic scientific inquiry and cross-national application. It is sufficiently general for use at several teaching levels.     

The Regionalization of Africa: Delineating Africa's Subregions Using Airline Data

Abstract

Current regionalizations of Africa have limitations in that they are attribute-based and regions are delineated according to national boundaries. Taking the world city network approach as starting point, it is possible to use relational data (i.e., information about the relationships between cities) rather than attribute data, and moreover, it becomes possible to ignore state boundaries by delineating the regions based on the location of the interaction structure between cities. This research uses airline data. A network analysis is performed on the number of passengers who fly between cities in Africa. A subregional map is created based on the results.     

Ad hoc matching of vectorial road networks

In integration of road maps modeled as road vector data, the main task is matching pairs of objects that represent, in different maps, the same segment of a real-world road. In an ad hoc integration, the matching is done for a specific need and, thus, is performed in real time, where only a limited preprocessing is possible. Usually, ad hoc integration is performed as part of some interaction with a user and, hence, the matching algorithm is required to complete its task in time that is short enough for human users to provide feedback to the application, that is, in no more than a few seconds. Such interaction is typical of services on the World Wide Web and to applications in car-navigation systems or in handheld devices.

Several algorithms were proposed in the past for matching road vector data; however, these algorithms are not efficient enough for ad hoc integration. This article presents algorithms for ad hoc integration of maps in which roads are represented as polylines. The main novelty of these algorithms is in using only the locations of the endpoints of the polylines rather than trying to match whole lines. The efficiency of the algorithms is shown both analytically and experimentally. In particular, these algorithms do not require the existence of a spatial index, and they are more efficient than an alternative approach based on using a grid index. Extensive experiments using various maps of three different cities show that our approach to matching road networks is efficient and accurate (i.e., it provides high recall and precision).

General Terms:Algorithms, Experimentation     

三工河流域绿洲土地利用对土壤特性的影响

Understanding the effect of human activities on the soil environment is fundamental to understanding global change and sustainable development. In the process of transformation of tropical rain forests and semiarid grasslands to farmlands, land degradation usually occurs. But the transformation of arid desert landscape to oasis is found to have quite different consequences. Taking an alluvial plain oasis in the north piedmont of the Tianshan Mountains as a case study, we investigate oasis soil properties related to different land-use systems during the transformation of arid desert to oases. Selected land-use systems con- sisted of an annual crop field less than 3 years old, annual crop field 3-6 years old, annual crop field more than 6 years old, perennial crop field less than 4 years old, perennial crop field of 4-6 years old, perennial crop field more than 6 years old, abandoned farmland more than 3 years old, woodland field more than 6 years old, ecological forestation field, natural shrubbery field, desert grass land, and saline or alkaline field. Different land-use systems affect significantly the distribution of sand, silt and clay. Sand content in oasis soil tends to decrease with cultivation years but silt and clay contents tend to be increased in the oasis soils. Soil fertility is higher in the land-use systems under strong human disturbance than under weak human disturbance. Oasis soil nutrients also tend to increase with cultivation years. Soils have a significantly lower salinity in the land-use systems under strong human disturbance than under weak human disturbance. Soil organic matter and nutrients of the annual and perennial crop systems in the oasis tend to increase with cultivation time with the oasis soil acting as a carbon sink. These results show that soils are not degraded and the soil quality is gradually improved under rational land use and scientific management patterns, including uniform exploitation of land resources, effective irrigation systems, sound drainage systems, balanced ferti     

Modified Objective Questions for Tests in Introductory Geography

Abstract

Over the past few years, considerable effort has been expended to improve the methods of teaching introductory courses in geography. For example, techniques such as the “open classroom” and simulation models have been introduced and seem to be successful, if for no other reason than their novelty. A new approach generates interest and induces the student to make a more personal commitment to his geography course and thereby provides a stronger motivation to learn. Of course, this is a primary concern even when the instructor employs standard approaches to classroom teaching.     

The cultural approach and geography ‐ the perspective of communication

An interest in culture developed in human geography from its beginning. It was rooted in a conception of 'geography as a science of places, not of men' (Vidal de la Blache), and focused on the study of man/milieu relationships through the analysis of landscapes or genres de vie , the origin and dispersal of agriculture, and the regional diversity of the earth. A neo-Weberian orientation appeared in the 1960s, but the main shift occurred in the 1970s, with the adoption of phenomenological or critical perspectives. The new cultural approach modernises the traditional orientations in the field, explores the meaning that people give to their spatial experience, and introduces new questions about the epistemological foundations of geography as a scientific discipline. In order to understand how society is produced and reproduced and how significance is given to the world, the new approach stresses the role of communication in cultural processes and spatial organisation.     

The Litter Census as a Tool in Geographic Education

Abstract

The ubiquitous nature of roadside trash easily lends itself to instructional use by geographers and others who are concerned with the environment. Various aspects of the litter problem can be manipulated in the classroom and in the field to effectively develop concepts of scientific method, information acquisition and recording, techniques of data analyses, means of classification and interpretation, and also to predict new problems and hypotheses. Moreover, through the use of the litter census technique, community-action projects may be stimulated and closer ties developed between the community and its schools.     

Nordic innovation models: Why is Norway different?

ABSTRACT

The study objective is to assess why official statistics give the impression that Norway has low levels of innovation compared to other Nordic countries. The author examines innovation practices in Denmark and Norway to demonstrate that this is not the case. The results reveal that official statistics are misleading and that Norway has a high level of innovation but spends relatively less on scientific research. A further finding is that in Finland and Sweden innovation is heavily based on science and technology, whereas Denmark and Norway are clearly more pragmatic and base their innovation more on a ‘doing, using, and interacting’ (DUI) post-science, technology, and innovation (STI) approach. Additionally, in Denmark systems are led by small and medium-sized enterprises, whereas in Norway they are led by large enterprises. The author discusses the explanations for such differences in national and regional ‘innovation systems’ among countries that appear to outsiders to have a lot in common. He concludes that, by contrast, the ‘insiders’ are aware that they are quite distinctive societies that are evolving notably divergent developmental pathways. A key and probably controversial conclusion is that in the contemporary post-specialisation and post-cluster era the DUI systems have advantages over the STI-led ones.     

Storyline-metoden,geografi og klassekameratene til 'Lille Marius'

During the last few years storyline as a teaching method has created considerable interest in many Norwegian primary schools. In storyline the teacher supplies some key concepts and the framework, and the pupils make the storyline. In this article I use a passage from Alexander Kielland's novel Gift to show how storyline can be a useful approach in geography teaching.