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Termite: A System for Tunneling Through Heterogeneous Data [article]

Raul Castro Fernandez, Samuel Madden
2019 arXiv   pre-print
In this paper, we advocate a different approach: rather than trying to infer a common schema, we aim to find another common representation for diverse, heterogeneous data.  ...  We present Termite, a prototype we have built to learn the best embedding from the data.  ...  Termite supports these goals through a novel Termite-Join capability.  ... 
arXiv:1903.05008v1 fatcat:2nukbx3y3vh5nlw72ppl3l27s4

Food encounter rate of simulated termite tunnels in heterogeneous landscapes

S.-H. Lee, N.-Y. Su, P. Bardunias, H.-F. Li
2007 Biosystems (Amsterdam. Print)  
To do this, a lattice model was formulated to simulate the tunneling structure of the termite. The model made use of minimized local rules derived from empirical data.  ...  The aim of this study was to explore how a heterogeneous landscape affects food encounter rate in the Formosan subterranean termite, Coptotermes formosanus Shiraki.  ...  Pepin (University of Florida) and for technical assistance.  ... 
doi:10.1016/j.biosystems.2006.09.035 pmid:17070986 fatcat:dxlm76qui5btzihcckxuy7eriu

Movement Efficiency and Behavior of Termites (Isoptera) in Tunnels with Varying Pore Sizes

Sook Junk Ku, Nan-Yao Su, Sang-Hee Lee
2013 Florida Entomologist  
We systematically observed the movement of termites (Reticulitermes speratus kyushuensis Morimoto) at the hole, and measured the time required (τ) for termites to pass through the tunnels.  ...  This heterogeneity creates 2 types of irregularities in the tunnel surface: (1) a bumpy tunnel-wall structure caused by variable soil texture; and (2) hollow space within the tunnel, where tunnels pass  ...  Using the recorded video footage, we measured the time (τ) taken by each termite to pass through the tunnel. Time τ was defined as the time taken for a termite to enter and exit the tunnel..  ... 
doi:10.1653/024.096.0314 fatcat:4miawvg6qrbq3eucttqcquoeky

Termites mitigate the effects of drought in tropical rainforest

L. A. Ashton, H. M. Griffiths, C. L. Parr, T. A. Evans, R. K. Didham, F. Hasan, Y. A. Teh, H. S. Tin, C. S. Vairappan, P. Eggleton
2019 Science  
Using a large-scale termite suppression experiment, we found that termite activity and abundance increased during drought in a Bornean forest.  ...  This increase resulted in accelerated litter decomposition, elevated soil moisture, greater soil nutrient heterogeneity, and higher seedling survival rates during the extreme El Niño drought of 2015–2016  ...  S7 ), indicating that our post-drought data are likely to be representative of the non-drought-stressed system.  ... 
doi:10.1126/science.aau9565 fatcat:e4cyf2i6dncvljlscbup2enf3q

Parameter tuning facilitates the evolution of diverse tunneling patterns in termites [article]

Nobuaki Mizumoto, Paul M Bardunias, Stephen C Pratt
2019 bioRxiv   pre-print
Our behavioral analysis and data-based modeling revealed that these species share the same behavioral repertoire, but a quantitative difference in the probability of sidewall excavation leads to diverse  ...  Here we demonstrate that the evolutionary divergence of termite tunneling patterns is achieved by quantitative tuning of shared behavioral rules, rather than the acquisition of novel behaviors.  ...  We pooled the data of two different colonies for each species because 331 we did not find significant colony variations for any species (t-test, P > 0.10). 332 To form the tunnel, termites visit the  ... 
doi:10.1101/836346 fatcat:lxkoqq2wlvcannvyl36mo5mf5y

Validating a Termite-Inspired Construction Coordination Mechanism Using an Autonomous Robot

Nicole E Carey, Paul Bardunias, Radhika Nagpal, Justin Werfel
2021 Frontiers in Robotics and AI  
Here we test this potential mechanism physically using a robotic system. Local humidity measurements provide a cue for material deposition.  ...  the high-humidity region characteristic of the mound interior, implying a coordination mechanism through environmental feedback where addition of wet soil influences the humidity profile and vice versa  ...  (B) Individual termites building at the end of a tunnel at the mound surface.  ... 
doi:10.3389/frobt.2021.645728 pmid:33969004 pmcid:PMC8098689 fatcat:fxzhcg3kbjgaxjz73mrygbq62y

Termite-induced heterogeneity in African savanna vegetation: mechanisms and patterns

Gudeta W. Sileshi, M. A. Arshad, Souleymane Konaté, Philip O.Y. Nkunika
2010 Journal of Vegetation Science  
Methods: We conducted a review of the literature, a meta-analysis and qualitative systems analysis to identify mechanisms to explain the observed patterns.  ...  Objectives: To (1) assess the strength of evidence for the role of termites in vegetation heterogeneity in African savannas, and (2) identify the mechanisms by which termites induce such heterogeneity.  ...  Part of this work was compiled by the first and last authors through support from the Sustainable Agriculture Initiative of CODESRIA-IFS.  ... 
doi:10.1111/j.1654-1103.2010.01197.x fatcat:bdf6coledvdfbdugwxl3mrjxhm

Termite mounds harness diurnal temperature oscillations for ventilation [article]

Hunter King, Samuel A. Ocko, L. Mahadevan
2017 arXiv   pre-print
Many species of millimetric fungus-harvesting termites collectively build uninhabited, massive mound structures enclosing a network of broad tunnels which protrude from the ground meters above their subterranean  ...  By measuring diurnal variations in flow through the surface conduits of the mounds of the species Odontotermes obesus, we show that a simple combination of geometry, heterogeneous thermal mass and porosity  ...  To prevent heterogeneous inertial flows where the narrow connector tube met the wider conduit, air was directed through a fine metal mesh before entering a conical flow rectifier.  ... 
arXiv:1703.08067v1 fatcat:ptysu6vwujelhns4qcr57l3hv4

Temperate forest termites: ecology, biogeography, and ecosystem impacts

DANIEL S. MAYNARD, THOMAS W. CROWTHER, JOSHUA R. KING, ROBERT J. WARREN, MARK A. BRADFORD
2015 Ecological Entomology  
habitat availability for other organisms. 6.  ...  Existing data are synthesised to outline how the subterranean, wood-nesting behaviour of most temperate forest termite species links their activity to an additional set of non-climate controls: wood type  ...  Acknowledgements We thank Matthew Messenger for his assistance with the National Termite Survey data, and Yoshinobu Hayashi for his assistance identifying temperate forest termites in Japan.  ... 
doi:10.1111/een.12185 fatcat:ove2je5ixnechh6gj7a7jpy4yq

Measurement of Time Taken by the Formosan Termite,Coptotermes formosanus, to Pass Tunnel Intersections

Sook Jung Ku, Su Nan-Yao, Lee Sang-Hee
2012 Journal of Insect Science  
Subterranean termites build complex tunnel networks below ground for foraging. During the foraging activity, termites may encounter a considerable number of tunnel intersections.  ...  In the present study, we measured the time spent by a termite to pass an intersection with widths of W 1 and W 2 (W 1 and W 2 : 2, 3, or 4 mm); L , R , and S are the passing time for turning left, turning  ...  Acknowledgements This research was supported by the National Institute for Mathematical Sciences.  ... 
doi:10.1673/031.012.2301 pmid:22950717 pmcid:PMC3472922 fatcat:u3d2ljqfqjhtbevin2myuk5pxe

Revisiting stigmergy in light of multi-functional, biogenic, termite structures as communication channel

Sebastian Oberst, Joseph C.S. Lai, Richard Martin, Benjamin J. Halkon, Mohammad Saadatfar, Theodore A. Evans
2020 Computational and Structural Biotechnology Journal  
or building material; and for colony communication, either as in indirect communication (stigmergy) or as an information channel essential for direct communication through vibrations (biotremology).  ...  This review is focused on how termites design and build functional structures as nest, nursery and food storage; for thermoregulation and climatisation; as defence, shelter and refuge; as a foraging tool  ...  Further, the authors would like to acknowledge a licence for scientific activities under the Nature Conservation Act 2014 within the Australian Capital Territory (ACT) Tidbinbilla Nature Reserve (Licence  ... 
doi:10.1016/j.csbj.2020.08.012 pmid:33005314 pmcid:PMC7516209 fatcat:h7vs4u2dhzeqhasc43hkgcxx2u

Termite mounds harness diurnal temperature oscillations for ventilation

Hunter King, Samuel Ocko, L. Mahadevan
2015 Proceedings of the National Academy of Sciences of the United States of America  
Sane for useful conversations; P. Prasad, P. Sharma, and A. Vats for help with field work; J. Weaver for help with 3D printing; and J. MacArthur and S. Mishra for advice with electronics.  ...  .), and a MacArthur Fellowship (to L.M.).  ...  By measuring diurnal variations in flow through the surface conduits of the mounds of the species Odontotermes obesus, we show that a simple combination of geometry, heterogeneous thermal mass, and porosity  ... 
doi:10.1073/pnas.1423242112 pmid:26316023 pmcid:PMC4577200 fatcat:26mw7o5hzzefjcjzr7iposibya

Land-use diversity within an agricultural landscape promotes termite nutrient cycling services in a southern African savanna

Shelby K. LeClare, Monday Mdluli, Samantha M. Wisely, Nicola Stevens
2019 Global Ecology and Conservation  
We tested how compositional and configurational landscape heterogeneity influenced the presence of soil sheetings, a termite foraging activity, within savanna habitat patches embedded in a heterogeneous  ...  Within this spatial scale, high compositional heterogeneity, which was indicative of diverse habitat patches, promoted termite foraging activity, yet high configurational heterogeneity, indicative of a  ...  This research was funded by a United States National Science Foundation International Research Experience for Students grant, NSF IRES Grant No. 1459882, and by the College of Agriculture and Life Science  ... 
doi:10.1016/j.gecco.2019.e00885 fatcat:hixkkxknn5gzxgk5pzdkisgqs4

Termite mounds can increase the robustness of dryland ecosystems to climatic change

J. A. Bonachela, R. M. Pringle, E. Sheffer, T. C. Coverdale, J. A. Guyton, K. K. Caylor, S. A. Levin, C. E. Tarnita
2015 Science  
2015) Termite mounds can increase the robustness of dryland ecosystems to climatic change. Science, 347 (6222). pp. 651-655. ISSN 0036-8075 , http://dx.  ...  Termite-mound-induced heterogeneity We modify the previous model by introducing soil heterogeneity created by termite mounds.  ...  locations in the system (10)) eventually produces a heterogeneous final state, with clumps (or spots) of vegetation for R (0.55(5), 1.00(5)); vegetation labyrinths if R [1.00(5), 1.15(5)); and bare-soil  ... 
doi:10.1126/science.1261487 pmid:25657247 fatcat:iiuecfgqgzdgfnutxilctvjkmy

Review on Termite Mound Soil Characteristics and Agricultural Importance

S. Subi, A. Merline Sheela
2020 Journal of Agriculture and Ecology Research International  
Limited studies were conducted using termite mound soil as a bulking material to compost crop residues.  ...  Addition of soil with various amendments to boost up the nutrient content and moisture holding capacity is necessary for improving the crop productivity.  ...  So the termite mound soil is a niche for many microorganisms and fauna. Many reviews summarized of termite mound soil.  ... 
doi:10.9734/jaeri/2020/v21i730152 fatcat:t5ewxtn5m5eljnpiz7j654mfpm
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