Produced as a result of the Bat Tree Habitat Key project this book is a guide to find tree-roosts. Due to the involvement of professional surveyors and amateur naturalists, the content is pitched to be useful, with the inclusion of a repeatable analysis framework and clearly identifiable thresholds for action, whilst being accessible to amateurs. The book is evidence-based and includes detail on the roosting ecology of the 14 tree-roosting species, in addition to photographs, and data.
"It is the first time a repeatable analysis framework has been defined against which the surveyor may compare their results at every stage, from the desk-study, through ground-truthing, survey, and analysis, thereby ensuring nothing is overlooked and that every result can be objectively compared. The survey and analysis framework itself is ground-breaking in that it may readily be adapted for any taxa; from moths, through amphibians, reptiles, birds, and all other mammals.
Used diligently, these methods will reward disproportionately and imbue the reader with renewed confidence as they quickly progress from beginner to competency. Thus, this book is for everyone who has ever wanted to find a tree-roost, or to safeguard against inadvertently damaging one."
Bat Tree Habitat Key, 2018
Figures and tables: colour photographs, illustrations, and tables
Publisher: Pelagic Publishing
Author: Bat Tree Habitat Key
Ch 1. Rationale
- Pre-existing published advice
Ch 2. Tree Roosting Bats
- Tree-roosting bat species
- Wooded habitat and tree species
- Sensitivity to isolation
- Seasonal tree-roost occupancy and roost size
- Roost heights
- General tree-roost preferences
Ch 3. Potential Roost Features
- The Disease and Decay PRF
- The Damage PRF
- The Association PRF
Ch 4. Intelligence Gathering
- Collation of the results
Ch 5. The Desk Study
- The desk-study objective
- The test of 'reasonable likelihood'
- To survey or not to survey
Ch 6. Ground Truthing
- Ground-truthing method
- Ground-truthing interpretation
Ch 7. Choosing Surveillance Methods
- Putting it all together
- The proportionality text
Ch 8. Close-inspection
- Health and Safety
- Close-inspection method
Ch 9. Remote-observation
- Confounding factors
- Health and Safety
- Remote-observation method
Ch 10. Static-netting
- Health and Safety
- Static-netting method
Ch 11. Surveillance-effort
- Detectability variables
- Surveillance periods and intensity therein
Ch 12. Trouble-shooting
- Fundamental principles
- Inconclusive and 'null' results
- Indirect damage and disturbance
- Comparative assessment of the environment
- Late commissions
- Unlicensed assessments
- Getting a second opinion
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