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1. (a) Describe the kind of information that could be gathered from the Frog Census Datasheet: (b) Identify the benefits of linking a measure of abundance to habitat assessment:

1. (a) Describe the kind of information that could be gathered from the Frog Census Datasheet: (b) Identify the benefits of linking a measure of abundance to habitat assessment:

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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**Indirect Sampling** If populations are small and easily recognized, they may be monitored directly quite easily. However, direct measurement of elusive, easily disturbed, or widely dispersed populations is not always feasible. In these cases, indirect methods can be used to assess population abundance, provide information on habitat use and range, and enable biologists to link habitat quality to species presence or absence. Indirect sampling methods provide less reliable measures of abundance than direct sampling methods, such as mark and recapture, but are widely used nevertheless. They rely on recording the signs of a species, e.g., scat, calls, tracks, and rubbings or markings on vegetation, and using these to assess population abundance. In Australia, the Environmental Protection Agency (EPA) provides a Frog Census Datasheet (below) on which volunteers record details about frog populations and habitat quality in their area. This programme enables the EPA to gather information across Australia. **Images and Diagrams:** - **Frog Census Datasheets** - Displays different sections such as ‘Habitat Assessment,’ ‘Water Quality and Weather,’ and ‘Frogs Heard Calling.’ - These sections help volunteers record specific observations that contribute to understanding frog populations and habitat conditions. - **Image of a Bat Detector** - Used to sample nocturnal, highly mobile species by estimating population density through recorded calls. - **Animal Tracks** - Analysis of tracks helps identify animals and conduct population surveys. Tracks can vary greatly within the same species and provide insights into habitat use and preference. - **Scat Analysis** - Scats are species-specific and can be identified to gather data on diet, movements, population density, and more. **Questions:** 1. (a) Describe the kind of information that could be gathered from the Frog Census Datasheet: _______________________________________________________________________________________________________________________________________________________ (b) Identify the benefits of linking a measure of abundance to habitat assessment: _______________________________________________________________________________________________________________________________________________________ 2. Describe one other indirect method of population sampling and outline its advantages and drawbacks: _______________________________________________________________________________________________________________________________________________________
Transcribed Image Text:**Indirect Sampling** If populations are small and easily recognized, they may be monitored directly quite easily. However, direct measurement of elusive, easily disturbed, or widely dispersed populations is not always feasible. In these cases, indirect methods can be used to assess population abundance, provide information on habitat use and range, and enable biologists to link habitat quality to species presence or absence. Indirect sampling methods provide less reliable measures of abundance than direct sampling methods, such as mark and recapture, but are widely used nevertheless. They rely on recording the signs of a species, e.g., scat, calls, tracks, and rubbings or markings on vegetation, and using these to assess population abundance. In Australia, the Environmental Protection Agency (EPA) provides a Frog Census Datasheet (below) on which volunteers record details about frog populations and habitat quality in their area. This programme enables the EPA to gather information across Australia. **Images and Diagrams:** - **Frog Census Datasheets** - Displays different sections such as ‘Habitat Assessment,’ ‘Water Quality and Weather,’ and ‘Frogs Heard Calling.’ - These sections help volunteers record specific observations that contribute to understanding frog populations and habitat conditions. - **Image of a Bat Detector** - Used to sample nocturnal, highly mobile species by estimating population density through recorded calls. - **Animal Tracks** - Analysis of tracks helps identify animals and conduct population surveys. Tracks can vary greatly within the same species and provide insights into habitat use and preference. - **Scat Analysis** - Scats are species-specific and can be identified to gather data on diet, movements, population density, and more. **Questions:** 1. (a) Describe the kind of information that could be gathered from the Frog Census Datasheet: _______________________________________________________________________________________________________________________________________________________ (b) Identify the benefits of linking a measure of abundance to habitat assessment: _______________________________________________________________________________________________________________________________________________________ 2. Describe one other indirect method of population sampling and outline its advantages and drawbacks: _______________________________________________________________________________________________________________________________________________________
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