demes

demes
Name	demes
Native name	δῆμος
Settlement type	subdivision
Subdivision type	Region
Subdivision name	Attica

demes are local subdivisions historically associated with ancient Athens, and in biology denote small breeding populations within a species. The term traces to ancient Greece and evolved through usages in classical studies, population biology, conservation, and computational modeling. Demes appear in discussions of Cleisthenes, Pericles, Herodotus, Thucydides, and modern figures such as Sewall Wright and Motoo Kimura.

Definition and Etymology

The word derives from classical Greek language δῆμος and was institutionalized in the reforms attributed to Cleisthenes following the fall of the Peisistratid tyranny and preceding the era of Pericles and Athenian democracy. In classical scholarship the term is discussed alongside primary sources like Herodotus and Thucydides and in modern analyses by historians such as J. K. Davies and M. H. Hansen. Linguists compare δῆμος to other regional terms in works by Ernst Curtius, Martin Litchfield West, and W. G. Forrest. Epigraphists reference deme lists preserved on stelai found near Pnyx, Agora of Athens, and deme sanctuaries traditionally associated with families mentioned by Plato and Xenophon.

Historical Development and Usage

In Athenian reforms attributed to Cleisthenes demes replaced older kinship-based divisions and interfaced with institutions like the Boule and the Ekklesia. Deme membership appears in citizen registration records used by officials during the periods of Pericles and later oligarchic interventions such as the Thirty Tyrants. Demes are documented in archaeological surveys of Attica, inscriptions compiled in corpora like the Inscriptiones Graecae, and modern editorial histories by scholars such as John Boardman and Paul Cartledge. Roman-era sources including Polybius and administrative continuities noted by Cassius Dio illustrate deme persistence into the Hellenistic and Roman periods, with disruptions from events like the Macedonian Wars and reforms under Augustus.

Biological and Population Genetics Context

In population genetics the term deme denotes a local breeding unit used in models by theorists like Sewall Wright and Ronald Fisher, and subsequent work by Motoo Kimura and John Maynard Smith. Demes serve as the basis for concepts such as genetic drift, gene flow, and F-statistics developed by Wright and extended in analytical texts by Richard Lewontin, Motoo Kimura, and Masatoshi Nei. Empirical studies of demes feature in research on organisms studied by Theodosius Dobzhansky and modern field studies led by teams associated with institutions such as the Smithsonian Institution and the Natural History Museum, London. Conservation geneticists from IUCN guidelines to case studies on species managed by World Wildlife Fund use deme concepts to inform captive-breeding and translocation strategies discussed in literature by Frankham and Allendorf.

Archaeological and Anthropological Applications

Archaeologists and anthropologists apply demic concepts when interpreting settlement patterns, material culture, and lineage-based artifacts. Fieldwork in regions from Attica to the Aegean Sea and comparative studies involving sites like Knossos, Mycenae, and Delphi use deme-related evidence in ceramic seriation studies referenced in monographs by Arthur Evans, Heinrich Schliemann, and Mary Hamilton Swindler. Anthropologists working on kinship and local identity draw on theoretical frameworks from Claude Lévi-Strauss, Marshall Sahlins, and M. N. Srinivas to relate demes to social organization in both classical and non-classical contexts, with ethnographic parallels found in studies conducted by Bronisław Malinowski and Evans-Pritchard.

Demes in Modern Taxonomy and Conservation

Taxonomists and conservation biologists use the deme notion when delineating management units and evolutionarily significant units in policies influenced by reports from IUCN Red List assessments, regional plans from the European Commission and national agencies such as the US Fish and Wildlife Service. Case studies on taxa from Panthera tigris populations studied by Conservation International to insular bird populations documented by BirdLife International illustrate deme-informed conservation decisions. Molecular systematists publishing in journals connected to institutions like Smithsonian Institution and Royal Society integrate deme-level sampling strategies based on methods from researchers like Allendorf and Avise.

Computational and Simulation Models of Demes

Computational models represent demes as nodes in metapopulation frameworks employed by theorists and modelers including Sewall Wright, Haldane, Motoo Kimura, Simon Levin, and Robert May. Software and simulation platforms developed in groups at Max Planck Institute, Princeton University, and University of Oxford implement deme-structured models for studies by teams led by Nick Barton and Graham Coop. Agent-based models and landscape genetics simulations used by researchers at Stanford University and University of California, Berkeley explore deme connectivity with parameterizations derived from field projects by organizations like Nature Conservancy and computational resources provided by XSEDE and European Bioinformatics Institute.

Category:Classical Greek society Category:Population genetics