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Bio-logging

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Chapter2: Bio-logging (Textbook, pdf, 2,770KB)

  • 2.1 Acquisition of animal behavioral information
  • 2.2 Techniques of Bio-logging
    • 2.2.1 Behavior information acquisition using micro data logger (archival tag)
    • 2.2.2 Behavior information acquisition with transmitter (biotelemetry)
    • 2.2.3 Features of bio-logging techniques
    • 2.2.4 Method of installing measuring instruments
  • 2.3 Analysis of animal behavioral information
  • 2.4 Case studies of bio-logging
    • 2.4.1 Behavior analysis of green turtles using micro data loggers
    • 2.4.2 Homing behavior investigation of rockfish using ultrasonic biotelemetry

What is the relevance of Bio-logging in Field Informatics

In recent years, the habitats of wild animals and humans have remarkably overlapped as economic activity upgrades and expands. As a result, the possibility of the involvement of human activities in the biosphere being a cause of the decrease of biodiversity and a destabilizing factor of the ecosystem can no longer be ignored. There are some regions where serious social problems such as damage to the residents, farm damage and fisheries resource depletion are caused by the friction of human activities and the ecosystem. It is a pressing issue for the human race, also a member of the biosphere in the ecosystem, to attempt adequately estimating and recovering the influence that human’s participation in an excessive ecosystem to say nothing of continuously using the living things as a resource. It is very effective to use behavior information of the wild animals to clarify the relationship between man and wild animals. In this chapter, we introduce that the acquisition methods of animal behavioral information using the latest information technology.

Overview

Bio-logging is a research technique to examine the phenomenon of animals in their ambient surroundings where observation by humans is excluded or limited. Japan especially has been playing an advanced role in the technological development of bio-logging. It is very difficult that human beings observe the capacity or activity of animals with a high degree of accuracy over the long term, because this generally deviates from the range of human visual observation. To solve social issues such as prevention of the decrease of biodiversity, continuous management of food living resources and ease the friction of human activities and the ecosystem, it is necessary to get these "unseen" animal behavioral information. Bio-logging is a method to solve these issues. Specifically, the term refers to research using a method to accumulate information with micro data loggers (archival tags) attached to or implanted in the animals and obtain data or a method of installing a beeper and an ultrasonic transmitter in the animals and acquiring movement, environmental information on the living thing. Through the recent advanced electronics and communications technology, miniaturization of micro data loggers and various transmitters expands animals surveyed, and increased performance (wide-ranging of sensor, increasing of the amount of memory or communication) enables to obtain enormous volume of data. Bio-logging is an observation technique of the animals with a lot of possibilities.

Case Study

In this chapter, two case studies are introduced.

  1. Behavior analysis of green turtles using micro data loggers
  2. Because of the factors such as the recent decrease of biodiversity or the friction caused by overlapping with the habitats of wild animals and humans, it increases in setting in national parks or sanctuaries. In this case, it is important problem to decide which area to set in sanctuaries or how large is suitable. When behavior of the animal which lives in sanctuaries can be pursued, it will be very useful for sanctuary setting. In this case study, for example in the Similan Islands in Thailand, it is introduced about a method to obtain and analyze behavior data of the green sea turtle.

  3. Homing behavior investigation of rockfish using ultrasonic biotelemetry
  4. When estimating the environment such as an artificial seaweed bed or a tidal land, it is very important to understand how animals which live around this area were using the environment. In this case study, it is aimed at fishes (rockfishes) which live around Kansai International Airport and examine using the ultrasonic biotelemetry how Kansai International Airport works as the habitat of the rockfishes.