Sows' Ears and Silver Linings. A Backward Look at Ethnography

Globalization, changing views of science, and alterations in the culture concept have gradually modified the way fieldwork is perceived within anthropology. This paper briefly examines the contributions of four ethnographers in order to argue that ethnography based on fieldwork remains essential to our definition as a profession. The claim is made here that unless anthropologists continue to make fieldwork central, anthropological theory will be cut off from its grounding in data. Other observers, less skilled than anthropologists but more daring, will increasingly supplant ethnographers in gathering new information that they then interpret and in claiming the public readership that anthropologists were once able successfully to address.     

Correction for bias in visual transect censuses of coral reef fishes

Transect techniques for censusing reef fishes, and the sources of bias inherent in them are considered. A technique, derived from aeraly survey methods, is demonstrated to correct a bias in density estimates due to the width of the transect being censused. This bias is sufficient on a transect 1 m wide to underestimate density by 11.1–26.7% for five species or species groups examined. The bias is still greater on wider transects. Because this bias varies in degree among species, comparisons among species should not be made using uncorrected transect data. Comments are made on other probable sources of bias in transect data, and on ways of minimising bias when making visual transect censuses.     

How citizen science could improve species distribution models and their independent assessment

1. Species distribution models (SDM) have been increasingly developed in recent years, but their validity is questioned. Their assessment can be improved by the use of independent data, but this can be difficult to obtain and prohibitive to collect. Standardized data from citizen science may be used to establish external evaluation datasets and to improve SDM validation and applicability.
2. We used opportunistic presence‐only data along with presence–absence data from a standardized citizen science program to establish and assess habitat suitability maps for 9 species of amphibian in western France. We assessed Generalized Additive and Random Forest Models’ performance by (1) cross‐validation using 30% of the opportunistic dataset used to calibrate the model or (2) external validation using different independent datasets derived from citizen science monitoring. We tested the effects of applying different combinations of filters to the citizen data and of complementing it with additional standardized fieldwork.
3. Cross‐validation with an internal evaluation dataset resulted in higher AUC (Area Under the receiver operating Curve) than external evaluation causing overestimation of model accuracy and did not select the same models; models integrating sampling effort performed better with external validation. AUC, specificity, and sensitivity of models calculated with different filtered external datasets differed for some species. However, for most species, complementary fieldwork was not necessary to obtain coherent results, as long as the citizen science data were strongly filtered.
4. Since external validation methods using independent data are considered more robust, filtering data from citizen sciences may make a valuable contribution to the assessment of SDM. Limited complementary fieldwork with volunteer''s participation to complete ecological gradients may also possibly enhance citizen involvement and lead to better use of SDM in decision processes for nature conservation.

     

Perpendicular distance models for line transect sampling

Perpendicular distance line transect models are examined to assess whether any single model can provide a general procedure for analysing line transect data. Of the two-parameter models considered, the hazard-rate model appears promising, whereas the exponential power series and exponential quadratic models do not. Of the nonparametric models, the Fourier series is the best developed, and is favoured by many researchers as a general model. However, for a given data set, the Fourier series estimate may be highly dependent on the number of terms selected, and so the model is not a clear improvement over the hazard-rate model. A similar variable-term model, using Hermite polynomials, is considered, and is shown to be less dependent on the number of terms selected. There has been some debate about whether the derivative of the density function of perpendicular distances evaluated at 0 should be 0, so that the function has a "shoulder." The problem is examined in detail, and it is argued that reliable estimation is not possible from line transect data unless a shoulder exists. Many data sets appear to exhibit no shoulder; possible reasons are examined.     

Family Expressed Emotion in a Javanese Cultural Context

This study aims at understanding the emotional milieu of families of psychotic patients, focusing on the concept of expressed emotion (EE). A combination of ethnographic and clinical methodology was employed. During the fieldwork in Yogyakarta, Indonesia, nine participants diagnosed as having first episode psychosis and their families were followed closely over the course of 1 year in their natural home setting. Through ongoing engagement with families, the researcher was able to gather data on the diversity of family responses to illness. Despite the fact that most families in this research could be considered to have low EE, ethnographic observation provided a more complex and nuanced picture of family relationships. This article discusses four issues concerning EE in relation to Javanese culture: the role of interpretation, the coexistence of criticism and warmth, the interpretation of boundary transgression, and the cultural concept of warmth and positive remark.     

Pedagogy as View Sequence: Popular Culture, Education, and Travel

This article examines the economic and cultural construction of Latin America as an educational site, using analysis of brochures advertising educational tours, fieldwork in an educational tour organization, and interviews with educational travelers in the United States and Mexico. Representations are manipulated to define Latin America as colorful, exotic, and pristine and U.S. travelers as omniscient, sophisticated, and invisible.     

Scale-dependent effectiveness of on-field vs. off-field agri-environmental measures for wild bees

The effectiveness of agri-environment schemes depends on scheme type, taxon and landscape. Here, we show how spatial scale, i.e. studied transect, field or farm level, and controlling for yield loss, can drastically change the evaluation of biodiversity benefits of on-field (organic farming) vs. off-field (flower strips) schemes. We selected ten agricultural landscapes in Central Germany, each with a triplet of winter wheat fields: one organic, one conventional with flower strip, and one conventional without flower strip as a control. We surveyed the abundance of wild bees at field edges for two years. We found that comparing data at the transect level may lead to misleading conclusions, because flower strips, covering only 5% of conventional fields, support fewer bees than large organic fields. However, a 50% cereal yield loss of organic farming can be considered as equivalent to yield levels of 50 ha conventional plus 50 ha flower strip. This would promote 3.5-times more bees than 100 ha organic farming. In conclusion, considering various scales in the evaluation of agri-environment scheme measures is necessary to reach a balanced understanding of their ecological and economic effects and their effectiveness.     

News and Comments

Concept mapping is an activity with numerous uses in the biology classroom. Its value in planning, teaching, revision, and assessment, and the attitudes of students and teachers towards its use, are discussed. Comments made are illustrated with excerpts from interviews with teachers and students who were involved in classroom concept mapping exercises. The use of expert maps for scoring is described, and some of the pitfalls are considered. Finally, the value of concept mapping as an aid to reflective practice is discussed.     

Line Transect Sampling in Small Regions

This article develops an approach to estimating population abundance from line transect surveys that uses a calibration survey to estimate the detection function, which is then employed as a weight function in constructing the abundance estimate. Nonparametric methods of estimating the detection function via local regression and via a kernel density estimator are considered. The proposed methods are evaluated using a set of Western Australian plant data and weed enumeration data.     

哺乳类动物数量调查中的截线抽样法与逆向截线法

文本介绍了可用于哺乳动物数量调查的一种新方法--截线抽样法,并在此方法的基础上,结合我国动物调查实践,提出了逆向截线法。逆向截线法在贺兰山自然保护区马鹿数量调查中,取得了较好效果。     

Development of indicators of ecosystem functioning in a temperate shelf sea: a combined fieldwork and modelling approach

A conceptual model of the main carbon and nitrogen flows through pelagic and benthic food webs was used to identify the key biogeochemical processes representing ecosystem functioning, and to select indicators of each of these processes. A combined fieldwork and modelling approach was used to provide the data required to evaluate the indicators in terms of their suitability for assessing and managing the impacts of climate change and demersal trawling. Four of our 16 proposed indicators (phytoplankton production and productivity, near-bed oxygen concentrations and oxygen penetration of the seabed) met the majority of criteria we used for evaluating indicators. Five indicators (depth of anoxic sediment, zoobenthos biomass, production, productivity and bioturbation potential) did not comply with sufficient criteria to be considered as good indicators. Six of our proposed indicators (zooplankton biomass, size structure, production and productivity; ecosystem productivity; ecosystem balance) could not be assessed for sensitivity and specificity using our models, and therefore need to be addressed in future work aimed at improving both the models and the fieldwork. Our results indicate that evaluation of indicators is difficult, because of the number and variety of human pressures which need to be considered in reality, and the interactions between these pressures and the ecosystem components which they affect. The challenge will be to establish if there are indeed any indicators which are able to meet the majority of criteria for good indicators in holistic ecosystem-based assessments.     

The Nuts and Bolts of Doing the Flora of the Bahama Archipelago: How Don Correll Worked

The Flora of the Bahama Archipelago was published in a little over 8 years after it was initiated. In this paper, we document how Correll managed this feat from the initial concept to herbarium and fieldwork to illustrations and collaborations. Both archival data and personal recollections are incorporated as a demonstration of how such a project was conceived, conducted, and completed.     

自然保护地自然教育资源分类与评价——以神农架国家公园为例

自然教育是生态文明建设的有力抓手及重要内容。自然保护地具有良好的自然资源禀赋,为自然教育实践提供活动场地及教育资源基础。在界定分析自然教育相关概念及内涵基础上,提出自然保护地自然教育资源分类方案,包括自然事物、场地设施、自然文化3项主类,9个亚类、48种基本类型;综合运用层次分析法和德尔菲法构建包括教育价值、资源质量、开发条件3层要素、10项指标的自然教育资源评价体系;以神农架国家公园为例进行自然教育资源分类及评价的实证分析。结果表明,构建的自然教育资源分类方案及评价体系具有科学性、普适性与可操作性,可在自然保护地自然教育资源的调查、分类与评价中推广,为自然保护地的自然教育开发利用提供科学参考。     

The Ax Fight on CD‐ROM

In The Ax Fight [1975], Timothy Asch and Napoleon Chagnon introduced many innovative techniques that have since become standard in nonlinear multimedia. Yanomamö Interactive, a CD‐ROM for computer use, extends these techniques to enhance understanding of the film. The CD contains a copy of the film as well as analytical essays, photographs, maps, genealogies and raw genealogical data from the village where the film was made. Features of the CD are described in relation to five sections of The Ax Fight. Then research exercises with the CD version of the film are proposed. Exercises explore difficulties of fieldwork, selective perception, and debates that surround Yanomamö studies.     

Educational technology in the training of biology teachers: part 2

This is the second of two articles on this subject. Our first article (1975) considered the concept of educational technology in the context of teaching a course in ecology. This paper concentrates on a basic genetics course, and includes, as Appendix 2, for reference and comparison, a similarly designed course in animal physiology. Both courses acted as vehicles for student-teachers to think about the systems approach. Attention to the process as well as to subject content provides for training through, as opposed to training about educational technology.     

A Random Field Approach to Transect Counts of Wildlife Populations

Line transect counting of a wildlife population is considered a sampling from a planar marked point process, where the marks describe the detectability of the animals. Sampling properties of transect counts and a new density estimator are derived from a counting process, which is a shot-noise field induced by the marked point process. A general formula for the sampling variance of a transect is derived and applied to compare five common types of transects. Some stereological connections of transect sampling and density estimators are shown.     

From Crisis to Emergency: The Shifting Logic of Preparedness

Following the Second Lebanon War (2006), Israeli preparedness exercises were designed in reference to that crisis event. Hold annually for more than a decade, ‘Turning Point’ exercises are now accompanied by a ‘National Emergency Week’. After three years of fieldwork in the National Emergency Management Authority (NEMA) and the Turning Point administration, we came to realise that the conceptualisation of preparedness for such events has morphed. Through an analytical discussion on the concepts of crisis and emergency, we argue that a shift in orientation has occurred and crisis response gave birth to emergency management. That is, preparedness is no longer driven by historical precedent but has become a form of future-oriented emergency practice. Moreover, we argue, an emergency apparatus – a distinct technology of governance – has emerged that, although varying in form and composition, has become the means and ends of civilian-front preparedness.     

"Writing in the Margins": Brazilian Hip-Hop as an Educational Project

Hip-hop culture's force as part of globalization in the fields of economics, popular aesthetics, and identity politics has been well documented. However, its articulation to educational practices has received less attention. This article draws upon fieldwork conducted in 1999 and 2002 in a youth correctional facility to analyze how state institutional practices mediate hip-hop's educational project in São Paulo, Brazil. This analysis historicizes culture and education as they pertain to popular culture and the state in urban Brazil, and evaluates hip-hop's pedagogical force in the local workshop setting.     

Negotiating Dangerous Fields: Pragmatic Strategies for Fieldwork amid Violence and Terror

As anthropology turns toward the cultural issues of the 21 st century, more and more ethnographic fieldwork is and will continue to be conducted in regions fraught with conflict, instability, and terror. Despite a growing literature that seeks to develop new theories and perspectives for the study of violence, little mention is made of the practical matters of survival in perilous field sites and how the anthropologist's experience of violence in the field should be considered. What is needed is a pragmatic strategy for dealing with threats to the safety, security, and well-being of anthropologists and informants who work amid the menace of violence. Drawing on my own fieldwork in Haiti, I suggest the adoption of new tactics for ethnographic research and survival in dangerous fields—strategies that challenge the conventional ethics of the discipline, reconfigure the relationship between anthropologist and informant, and compel innovation in negotiating the exchange of data under hazardous circumstances. [Keywords: fieldwork, violence, methodology, ethics, Haiti]     

The evolving role of animal laboratories in physiology instruction

Laboratory exercises are intended to illustrate concepts and add an active learning component to courses. Since the 1980s, there has been a decline in animal laboratories offered in conjunction with medical physiology courses. The most important single reason for this is cost, but other contributing factors include the development of computer simulations, changes in medical education, and pressure from antivivisectionists. Unfortunately, the elimination of animal laboratories has occurred with relatively little consideration of the educational impact of this change. Although computer simulations are considered effective in helping students acquire basic physiological concepts, there is evidence some students acquire a more thorough understanding of the material through the more advanced and challenging experience of an animal laboratory. The fact that such laboratories offer distinct educational advantages should be taken into account when courses are designed.