scholarly journals Hunter-gatherer foraging networks promote information transmission

2021 ◽  
Author(s):  
Ketika Garg ◽  
Cecilia Padilla-Iglesias ◽  
Nicolás Restrepo Ochoa ◽  
V. Bleu Knight
Keyword(s):  
Information Transmission ◽  
Environmental Conditions ◽  
Information Exchange ◽  
Central Place ◽  
Local Network ◽  
Central Place Foraging ◽  
Home Base ◽  
Mobility Strategies ◽  
Complex Culture ◽  
Global And Local

AbstractCentral-place foraging, where foragers return to a central location (or home-base), is a key feature of hunter-gatherer social organization. Although why or when our ancestors started returning to “home-bases” remains unclear, it likely had significant implications for many aspects of hominin evolution. For example, central-place foraging, by changing hunter-gatherers’ use of space and mobility, could have altered social networks and increased opportunities for information exchange. We evaluated whether central-place foraging patterns facilitate information transmission and considered the potential roles of environmental conditions and mobility strategies. We built an agent-based central-place foraging model where agents move according to a simple optimal foraging rule, and can encounter other agents as they move across the environment. They either forage close to their home-bases within a given radius or move their home-bases to new areas. We analyzed the interaction networks arising across different environments and mobility strategies. We found that, at intermediate levels of environmental heterogeneity and mobility, central-place foraging increased global and local network efficiencies as well as the rate of contagion-based information transmission (simple and complex). Our findings suggest that the combination of foraging and movement strategies, as well as the underlying environmental conditions that characterized early human societies, may have been a crucial precursor in our species’ unique capacity to innovate, accumulate and rely on complex culture.

scholarly journals Hunter–gatherer foraging networks promote information transmission

2021 ◽  
Vol 8 (12) ◽  
Author(s):  
Ketika Garg ◽  
Cecilia Padilla-Iglesias ◽  
Nicolás Restrepo Ochoa ◽  
V. Bleu Knight
Keyword(s):  
Information Transmission ◽  
Environmental Conditions ◽  
Information Exchange ◽  
Central Place ◽  
Local Network ◽  
Mobility Strategies ◽  
Population Sizes ◽  
Spatial Use ◽  
Complex Culture ◽  
Global And Local

Central-place foraging (CPF), where foragers return to a central location (or home), is a key feature of hunter–gatherer social organization. CPF could have significantly changed hunter–gatherers’ spatial use and mobility, altered social networks and increased opportunities for information-exchange. We evaluated whether CPF patterns facilitate information-transmission and considered the potential roles of environmental conditions, mobility strategies and population sizes. We built an agent-based model of CPF where agents moved according to a simple optimal foraging rule, and could encounter other agents as they moved across the environment. They either foraged close to their home within a given radius or moved the location of their home to new areas. We analysed the interaction networks arising under different conditions and found that, at intermediate levels of environmental heterogeneity and mobility, CPF increased global and local network efficiencies as well as the rate of contagion-based information-transmission. We also found that central-place mobility strategies can further improve information transmission in larger populations. Our findings suggest that the combination of foraging and movement strategies, as well as the environmental conditions that characterized early human societies, may have been a crucial precursor in our species’ unique capacity to innovate, accumulate and rely on complex culture.

Improvement of Stabilization Time by Information Exchange Between Dispersed Generators in Local-network under Islanding

2002 ◽  
Vol 122 (2) ◽  
pp. 267-274 ◽  
Author(s):  
Kenji Okuyama ◽  
Takeyoshi Kato ◽  
Kai Wu ◽  
Yasunobu Yokomizu ◽  
Tatsuki Okamoto ◽  
...  
Keyword(s):  
Information Exchange ◽  
Local Network ◽  
Stabilization Time

Population and Community Consequences of Spatial Subsidies Derived from Central-Place Foraging

2007 ◽  
Vol 170 (6) ◽  
pp. 902
Author(s):  
Fagan ◽  
Frithjof Lutscher ◽  
Katie Schneider
Keyword(s):  
Central Place ◽  
Central Place Foraging ◽  
Spatial Subsidies

Tree Swallow selection for wetlands in agricultural landscapes predicted by central-place foraging theory

The Condor ◽  
2020 ◽  
Author(s):  
Andrew S Elgin ◽  
Robert G Clark ◽  
Christy A Morrissey
Keyword(s):  
Habitat Selection ◽  
Central Place ◽  
Foraging Theory ◽  
Agricultural Landscapes ◽  
Tree Swallow ◽  
Field Margins ◽  
Central Place Foraging ◽  
Prairie Pothole ◽  
Prairie Wetlands ◽  
Selection For

Abstract Millions of wetland basins, embedded in croplands and grasslands, are biodiversity hotspots in North America’s Prairie Pothole Region, but prairie wetlands continue to be degraded and drained, primarily for agricultural activities. Aerial insectivorous swallows are known to forage over water, but it is unclear whether swallows exhibit greater selection for wetlands relative to other habitats in croplands and grasslands. Central-place foraging theory suggests that habitat selectivity should increase with traveling distance from a central place, such that foragers compensate for traveling costs by selecting more profitable foraging habitat. Using global positioning system (GPS) tags, we evaluated habitat selection by female Tree Swallows (Tachycineta bicolor) at 4 sites containing wetlands and where terrestrial land cover was dominated by grasslands (grass, herbaceous cover) and/or cultivated cropland. We also used sweep-net transects to assess the abundance and biomass of flying insects in different habitats available to swallows (wetland pond margins, grassy field margins, and representative uplands). As expected for a central-place forager, GPS-tagged swallows selected more for wetland ponds (disproportionate to availability), and appeared to increasingly select for wetlands with increasing distance from their nests. On cropland-dominated sites, insect abundance and biomass tended to be higher in pond margins or grassy field margins compared to cropped uplands, while abundance and biomass were more uniform among sampled habitats at sites dominated by grass and herbaceous cover. Swallow habitat selection was not clearly explained by the distribution of sampled insects among habitats; however, traditional terrestrial sampling methods may not adequately reflect prey distribution and availability to aerially foraging swallows. Overall, our results underscore the importance of protecting and enhancing prairie wetlands and other non-crop habitats in agricultural landscapes, given their disproportionate use and capacity to support breeding swallow and insect populations.

ADDER

2021 ◽  
pp. 49-56
Author(s):  
A. N. Brysin ◽  
Yu. A. Zhuravleva ◽  
A. S. Mikaeva ◽  
S. A. Mikaeva
Keyword(s):  
Control Systems ◽  
Information Exchange ◽  
Electricity Generation ◽  
Local Network ◽  
Exchange Of Information ◽  
Upper Level ◽  
Bidirectional Exchange ◽  
And Control ◽  
Ethernet Interface

The article describes an electronic multifunctional adder for electricity metering SEM-3. The authors give the technical characteristics, the device and the principle of its operation. The presented adder is designed to monitor and account for the consumption of electricity generation and power directly from consumers, as well as in automated centralized accounting and control systems, and is designed for round-the-clock operation. The adder can collect and transmit information over six independent serial interfaces. The adder with a builtin GSM module provides bidirectional information exchange via cellular modem communication with remote devices and the transfer of accumulated data to the upper level of the automated electricity metering system. It provides bidirectional exchange of information over a local network with a PC over the built-in 10/100 Base-T Ethernet interface.

Sign in / Sign up

Export Citation Format

Share Document