1. Presented by : Rashmy Balasubramanian

2.  Aimed at saving endangered species of turtle in Ontario  The WSN gathers information regarding risks factors and habitat requirements  Project carried out by Queen’s University  Biologists and recovery teams will have real- time access via the Internet to data without costly field visits and without negatively impacting the species being studied.

3.  High Frequency Radio telemetry has historically been the most common method of tracking wildlife.  Disadvantages: Data collection performed infrequently and thus incomplete,cannot retask the network  Using WSN, GPS positioning gives accurate position information, that can be stored on the sensor node, whereas the RF transceiver can be used to transmit the data at desired intervals.

4.  Internet access  Network longevity  Management at a distance  Inconspicuous operation

6.  By using the RSSI (Received Signal Strength Indicator), the trilateration method can be used to accurately locate the turtle.  Sensor nodes operated using ZigBee technology  SQ-SEN-200 omnidirectional tilt and vibration sensor  Also various pressure, temperature and humidity sensors used

7. -Greater resolution both in time and space -WSN facilitates the collection of diverse types of data at frequent intervals over large. -WSN enable ecologists and field biologists to unobtrusively collect new types of data, providing new insights on processes. -Real-time data flows allow researchers to react rapidly to events, thus extending the laboratory to the field. -The numbers and locations of sensors can be chosen/optimized/changed -In general, the system is fault-tolerant. Any failure can be detected in real time. -Observing under extreme conditions -Reacting to events as they unfold -Controlled sensing: Sensing parameters can be remotely changed/ modified (e.g., frequency of sensing, data rate, type of data, sensing features, etc.)

8.  GPS & RF signals would be difficult to track while the turtles are under water. Hence, the tracking & transmission is done opportunistically, when the transceivers & antennas are exposed out of water.  Battery life is the biggest challenge in any WSN. Hence careful design & rigorous testing is involved to ensure the desired lifetime for the sensor node can be achieved.  Since tracking each turtle is important, the scenario of node failure is unacceptable.  In order to minimize the power consumption, the protocols used for RF communication have to be carefully chosen to ensure data is communicated accurately & in a timely manner.

9.  http://www.ece.queensu.ca/directory/laboratorie s/smcl/projects.html http://www.ece.queensu.ca/directory/laboratorie s/smcl/projects.html  A. Akhavan-Astaneh, A. Alemdar, and M. Ibnkahla, “Wireless sensor networks for wildlife monitoring: System architecture design”, Proc. International Workshop on Signal Processing and its Applications, Proc. International Workshop on Signal Processing and its Applications, WOSPA, UAE, March 2008  F. Al-Turjeman and M. Ibnkahla, “An overview of wireless sensor networks for ecology and forest monitoring”, Proc. International Workshop on Signal Processing and its Applications, WOSPA, UAE, March 2008