Bluegill Fish Populations: Sampling Methods
Field research can often depend on the quality and reliability of the equipment used to record samples and observations. If researchers fail to understand their sampling measures and any potential limitations they present, the end result of the data collection and observations may not have the validity required to make realistic conclusions about the population in question. Such is the case for studying fish populations, as different collection methods can skew the size and species of fish observed within a given sample area (Reynolds & Simpson, 1978). This current survey explores two sampling methods, trap-nets and electrofishing in order to highlight the potential limitations both show and to determine which of the graphs represent each method. Ultimately, Gear B represents the electrofishing method because of the larger numbers of smaller fish, while Gear A represents trap-net methods because there are relatively no smaller fish present in the sample data.
Trap-nets are a common collection method for research exploring biodiversity of fish in both fresh and saltwater environments. These are basically nets which trap fish species so that researchers can then count and measure the collected samples. Prior...
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