Human ecology
Human ecology is the interdisciplinary study of the relationships between humans and their natural, social, and built environments. Emerging from ecology and the social sciences in the late 19th and early 20th centuries, it integrates perspectives from biology, geography, sociology, anthropology, psychology, public health, and related fields.
The discipline examines how human populations adapt to environmental conditions, how cultural and social structures influence ecological interactions, and how technological and economic systems shape sustainability.
Human ecology has informed urban planning, epidemiology, resource management, and environmental policy, while also drawing on traditional and indigenous knowledge of human–environment relations. Today, it serves as a framework for understanding global challenges such as climate change, biodiversity loss, and social resilience.
Historical development
The roots of ecology as a broader discipline can be traced to the Greeks and a lengthy list of developments in natural history science. Ecology also has notably developed in other cultures. Traditional knowledge, as it is called, includes the human propensity for intuitive knowledge, intelligent relations, understanding, and for passing on information about the natural world and the human experience. The term ecology was coined by Ernst Haeckel in 1866 and defined by direct reference to the economy of nature.Like other contemporary researchers of his time, Haeckel adopted his terminology from Carl Linnaeus where human ecological connections were more evident. In his 1749 publication, Specimen academicum de oeconomia naturae, Linnaeus developed a science that included the economy and polis of nature. Polis stems from its Greek roots for a political community, sharing its roots with the word police in reference to the promotion of growth and maintenance of good social order in a community. Linnaeus was also the first to write about the close affinity between humans and primates. Linnaeus presented early ideas found in modern aspects to human ecology, including the balance of nature while highlighting the importance of ecological functions : "In exchange for performing its function satisfactorily, nature provided a species with the necessaries of life" The work of Linnaeus influenced Charles Darwin and other scientists of his time who used Linnaeus' terminology with direct implications on matters of human affairs, ecology, and economics.
Ecology is not just biological, but a human science as well. An early and influential social scientist in the history of human ecology was Herbert Spencer. Spencer was influenced by and reciprocated his influence onto the works of Charles Darwin. Herbert Spencer coined the phrase "survival of the fittest", he was an early founder of sociology where he developed the idea of society as an organism, and he created an early precedent for the socio-ecological approach that was the subsequent aim and link between sociology and human ecology.
The history of human ecology has strong roots in geography and sociology departments of the late 19th century. In this context a major historical development or landmark that stimulated research into the ecological relations between humans and their urban environments was founded in George Perkins Marsh's book Man and Nature; or, physical geography as modified by human action, which was published in 1864. Marsh was interested in the active agency of human-nature interactions in frequent reference to the economy of nature.
In 1894, an influential sociologist at the University of Chicago named Albion W. Small collaborated with sociologist George E. Vincent and published a "'laboratory guide' to studying people in their 'every-day occupations.'" This was a guidebook that trained students of sociology how they could study society in a way that a natural historian would study birds. Their publication "explicitly included the relation of the social world to the material environment."
The first English-language use of the term "ecology" is credited to American chemist and founder of the field of home economics, Ellen Swallow Richards. Richards first introduced the term as "oekology" in 1892, and subsequently developed the term "human ecology".
The term "human ecology" first appeared in Ellen Swallow Richards' 1907 Sanitation in Daily Life, where it was defined as "the study of the surroundings of human beings in the effects they produce on the lives of men". Richard's use of the term recognized humans as part of rather than separate from nature. The term made its first formal appearance in the field of sociology in the 1921 book "Introduction to the Science of Sociology", published by Robert E. Park and Ernest W. Burgess. Their student, Roderick D. McKenzie helped solidify human ecology as a sub-discipline within the Chicago school. These authors emphasized the difference between human ecology and ecology in general by highlighting cultural evolution in human societies.
Human ecology has a fragmented academic history with developments spread throughout a range of disciplines, including: home economics, geography, anthropology, sociology, zoology, and psychology. Some authors have argued that geography is human ecology. Much historical debate has hinged on the placement of humanity as part or as separate from nature. In light of the branching debate of what constitutes human ecology, recent interdisciplinary researchers have sought a unifying scientific field they have titled coupled human and natural systems that "builds on but moves beyond previous work." Other fields or branches related to the historical development of human ecology as a discipline include cultural ecology, urban ecology, environmental sociology, and anthropological ecology. Even though the term ‘human ecology' was popularized in the 1920s and 1930s, studies in this field had been conducted since the early nineteenth century in England and France.
In 1969, College of the Atlantic in Bar Harbor, Maine, was founded as a school of human ecology. Since its first enrolled class of 32 students, the college has grown into a small liberal arts institution with about 350 students and 35 full-time faculty. Every graduate receives a degree in human ecology, an interdisciplinary major which each student designs to fit their own interests and needs.
Biological ecologists have traditionally been reluctant to study human ecology, gravitating instead to the allure of wild nature. Human ecology has a history of focusing attention on humans' impact on the biotic world. Paul Sears was an early proponent of applying human ecology, addressing topics aimed at the population explosion of humanity, global resource limits, pollution, and published a comprehensive account on human ecology as a discipline in 1954. He saw the vast "explosion" of problems humans were creating for the environment and reminded us that "what is important is the work to be done rather than the label." "When we as a profession learn to diagnose the total landscape, not only as the basis of our culture, but as an expression of it, and to share our special knowledge as widely as we can, we need not fear that our work will be ignored or that our efforts will be unappreciated." Recently, the Ecological Society of America has added a Section on Human Ecology, indicating the increasing openness of biological ecologists to engage with human dominated systems and the acknowledgement that most contemporary ecosystems have been influenced by human action.
Overview
Human ecology has been defined as a type of analysis applied to the relations in human beings that was traditionally applied to plants and animals in ecology. Toward this aim, human ecologists integrate diverse perspectives from a broad spectrum of disciplines covering "wider points of view". In its 1972 premier edition, the editors of Human Ecology: An Interdisciplinary Journal gave an introductory statement on the scope of topics in human ecology. Their statement provides a broad overview on the interdisciplinary nature of the topic:- Genetic, physiological, and social adaptation to the environment and to environmental change;
- The role of social, cultural, and psychological factors in the maintenance or disruption of ecosystems;
- Effects of population density on health, social organization, or environmental quality;
- New adaptive problems in urban environments;
- Interrelations of technological and environmental changes;
- The development of unifying principles in the study of biological and cultural adaptation;
- The genesis of maladaptions in human biological and cultural evolution;
- The relation of food quality and quantity to physical and intellectual performance and to demographic change;
- The application of computers, remote sensing devices, and other new tools and techniques
Today there is greater emphasis on the problems facing individuals and how actors deal with them with the consequence that there is much more attention to decision-making at the individual level as people strategize and optimize risk, costs and benefits within specific contexts. Rather than attempting to formulate a cultural ecology or even a specifically "human ecology" model, researchers more often draw on demographic, economic and evolutionary theory as well as upon models derived from field ecology.
While theoretical discussions continue, research published in Human Ecology Review suggests that recent discourse has shifted toward applying principles of human ecology. Some of these applications focus instead on addressing problems that cross disciplinary boundaries or transcend those boundaries altogether. Scholarship has increasingly tended away from Gerald L. Young's idea of a "unified theory" of human ecological knowledge—that human ecology may emerge as its own discipline—and more toward the pluralism best espoused by Paul Shepard: that human ecology is healthiest when "running out in all directions". But human ecology is neither anti-discipline nor anti-theory, rather it is the ongoing attempt to formulate, synthesize, and apply theory to bridge the widening schism between man and nature. This new human ecology emphasizes complexity over reductionism, focuses on changes over stable states, and expands ecological concepts beyond plants and animals to include people.