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Applications:

Temperature Monitoring of the Mediterranean Sea
 

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High resolution Thermochrons (DS1921Z) are used in the Mediterranean Sea, to monitor the environment of the Mediterranean’s most important endemic plant, the "Posidonia Oceanica", which produces flowers and fruits on very rare occasions. Recent widely spread flowering can, in fact, be related to a temperature increase (average or local) of the sea water.

We have chosen Thermochrons because of their unprecedented ability to read and store data without the need of any external wire. This feature is of basic importance in our application because the temperature must be monitored in the sea, at different depths, not necessarily near the coast. We selected 5-10-15-20-25 msw (meter sub water) as sensing depths. Sensors have been encapsulated inside thermally-conducting, robust metal chassis in order to overcome pressure problems which could damage the devices. Once encapsulated, the sensors are firmly affixed to heavy blocks and later positioned at the selected sites inside small holes. This is to prevent readings affected from sea currents rather than from the real thermal status. Sensors are programmed to sample data every 3 hours (i.e. 8 samples per day), which ensures tracking temperatures for several months. The project aims to correlate temperature variations with the natural behavior of growth of the "Posidonia Oceanica".

This solution has been developed by ElbaTech s.r.l. for Circolo Subacquei Teseo Tesei Coop a.r.l.

ElbaTech s.r.l.
Circolo Subacquei Teseo Tesei

 

Studying Avian Breeding Patterns of Swallows
 

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Headquartered at Cornell University, Golondrinas de las Americas is a community of biologists dedicated to studying swallows in the genus Tachycineta from Alaska to Argentina, combining detailed studies of the breeding biology of the birds with standardized sampling of the swallows’ aerial insect prey. This network allows us to monitor the effects of weather and insect density on avian breeding on both short and long time scales at a hierarchy of spatial scales across the entire Western Hemisphere.  iButton Thermochron data loggers are placed in nests during the breeding season to monitor activity patterns during incubation.

This long-term, correlative monitoring has obvious merit for studies of:

  • global change
  • differences between tropical and temperate ecosystems
  • tropical-temperate life history difference in birds and insects

Golondrinas de las Americas
Golondrinas Handbook
Thermochron Portable Temperature Logging System