Introductory concepts / 1: |
Introduction / 1.1: |
Distance sampling methods / 1.2: |
Quadrat sampling / 1.2.1: |
Strip transect sampling / 1.2.2: |
Line transect sampling / 1.2.3: |
Point counts / 1.2.4: |
Point transect sampling / 1.2.5: |
Trapping webs / 1.2.6: |
Cue counting / 1.2.7: |
Dung counts / 1.2.8: |
Related techniques / 1.2.9: |
The detection function / 1.3: |
Range of applications / 1.4: |
Objects of interest / 1.4.1: |
Method of transect coverage / 1.4.2: |
Clustered populations / 1.4.3: |
Types of data / 1.5: |
Ungrouped data / 1.5.1: |
Grouped data / 1.5.2: |
Data truncation / 1.5.3: |
Units of measurement / 1.5.4: |
Ancillary data / 1.5.5: |
Known constants and parameters / 1.6: |
Known constants / 1.6.1: |
Parameters / 1.6.2: |
Assumptions / 1.7: |
Fundamental concept / 1.8: |
Detection of objects / 1.9: |
Cue production / 1.9.1: |
Observer effectiveness / 1.9.2: |
Environment / 1.9.3: |
History of methods / 1.10: |
Line transects / 1.10.1: |
Point transects / 1.10.2: |
Program Distance / 1.11: |
Assumptions and modelling philosophy / 2: |
Assumption 1: objects on the line or point are detected with certainty / 2.1: |
Assumption 2: objects are detected at their initial location / 2.1.2: |
Assumption 3: measurements are exact / 2.1.3: |
Other assumptions / 2.1.4: |
Fundamental models / 2.2: |
Summary / 2.2.1: |
Philosophy and strategy / 2.3: |
Model robustness / 2.3.1: |
Shape criterion / 2.3.2: |
Efficiency / 2.3.3: |
Model fit / 2.3.4: |
Test power / 2.3.5: |
Robust models / 2.4: |
Some analysis guidelines / 2.5: |
Exploratory phase / 2.5.1: |
Model selection / 2.5.2: |
Final analysis and inference / 2.5.3: |
Statistical theory / 3: |
General formula / 3.1: |
Standard distance sampling / 3.1.1: |
Distance sampling with multipliers / 3.1.2: |
The key function formulation for distance data / 3.2: |
Maximum likelihood methods / 3.3: |
Special cases / 3.3.1: |
The half-normal detection function / 3.3.4: |
Constrained maximum likelihood estimation / 3.3.5: |
Choice of model / 3.4: |
Criteria for robust estimation / 3.4.1: |
Akaike's Information Criterion / 3.4.2: |
The likelihood ratio test / 3.4.3: |
Goodness of fit / 3.4.4: |
Estimation for clustered populations / 3.5: |
Truncation / 3.5.1: |
Stratification by cluster size / 3.5.2: |
Weighted average of cluster sizes / 3.5.3: |
Regression estimators / 3.5.4: |
Use of covariates / 3.5.5: |
Replacing clusters by individual objects / 3.5.6: |
Density, variance and interval estimation / 3.6: |
Basic formulae / 3.6.1: |
Replicate lines or points / 3.6.2: |
The jackknife / 3.6.3: |
The bootstrap / 3.6.4: |
Estimating change in density / 3.6.5: |
A finite population correction factor / 3.6.6: |
Stratification and covariates / 3.7: |
Stratification / 3.7.1: |
Covariates / 3.7.2: |
Efficient simulation of distance data / 3.8: |
The general approach / 3.8.1: |
The simulated line transect data of Chapter 4 / 3.8.2: |
The simulated size-biased point transect data of Chapter 5 / 3.8.3: |
Discussion / 3.8.4: |
Exercises / 3.9: |
Example data / 4: |
Right-truncation / 4.3: |
Left-truncation / 4.3.2: |
Estimating the variance in sample size / 4.4: |
Analysis of grouped or ungrouped data / 4.5: |
The models / 4.6: |
Likelihood ratio tests / 4.6.2: |
Estimation of density and measures of precision / 4.6.4: |
The standard analysis / 4.7.1: |
Ignoring information from replicate lines / 4.7.2: |
Bootstrap variances and confidence intervals / 4.7.3: |
Satterthwaite degrees of freedom for confidence intervals / 4.7.4: |
Estimation when the objects are in clusters / 4.8: |
Observed cluster size independent of distance / 4.8.1: |
Observed cluster size dependent on distance / 4.8.2: |
Independence / 4.9: |
Detection on the line / 4.9.2: |
Movement prior to detection / 4.9.3: |
Inaccuracy in distance measurements / 4.9.4: |
Standard method with additional truncation / 4.10: |
Replacement of clusters by individuals / 5.8.2: |
Regression estimator / 5.8.3: |
Related methods / 5.9: |
Dung and nest surveys / 6.1: |
Background / 6.2.1: |
Field methods / 6.2.2: |
Analysis / 6.2.3: |
Line transect surveys for objects that are not continuously available for detection / 6.2.4: |
Periods of detectability interspersed with periods of unavailability / 6.3.1: |
Objects that give discrete cues / 6.3.2: |
Density estimation / 6.4: |
Example / 6.4.3: |
Distance sampling surveys for fast-moving objects / 6.5: |
Line transect surveys / 6.5.1: |
Point transect surveys / 6.5.2: |
Other models / 6.6: |
Binomial models / 6.6.1: |
Estimators based on the empirical cdf / 6.6.2: |
Estimators based on shape restrictions / 6.6.3: |
Kernel estimators / 6.6.4: |
Hazard-rate models / 6.6.5: |
Distance sampling surveys when the observed area is incompletely covered / 6.7: |
Survey design and field methods / 6.8: |
Estimation of density / 6.8.2: |
Monte Carlo simulations / 6.8.4: |
A simple example / 6.8.5: |
Darkling beetle surveys / 6.8.6: |
Point-to-object and nearest neighbour methods / 6.9: |
Study design and field methods / 6.10: |
Survey design / 7.1: |
Transect layout / 7.2.1: |
Sample size / 7.2.2: |
Survey protocol and searching behaviour / 7.3: |
Data measurement and recording / 7.3.1: |
Distance measurement / 7.4.1: |
Angle measurement / 7.4.2: |
Distance measurement error / 7.4.3: |
Cluster size / 7.4.4: |
Line length measurement / 7.4.5: |
Data recording / 7.4.6: |
Training observers / 7.5: |
Aerial surveys / 7.6: |
Aircraft and survey characteristics / 7.6.1: |
Search and survey protocol / 7.6.2: |
Marine shipboard surveys / 7.6.3: |
Vessel and survey characteristics / 7.7.1: |
Land-based surveys / 7.7.2: |
Surveys of small objects / 7.8.1: |
Stratification by habitat / 7.8.2: |
Permanent transects and repeat transects / 7.8.3: |
Cut transects / 7.8.4: |
Roads, tracks and paths as transects / 7.8.5: |
Spotlight and thermal imager surveys / 7.8.6: |
Objects detected away from the line / 7.8.7: |
Bird surveys / 7.8.8: |
Surveys in riparian habitats / 7.8.9: |
Special circumstances / 7.9: |
Multi-species surveys / 7.9.1: |
Surveys of animals that occur at high densities / 7.9.2: |
One-sided transects / 7.9.3: |
Uneven terrain and contour transects / 7.9.4: |
Uncertain detection on the trackline / 7.9.5: |
Field comparisons between line transects, point transects and mapping censuses / 7.10: |
Breeding birds in Californian coastal scrub / 7.10.1: |
Breeding birds in Sierran subalpine forest / 7.10.2: |
Bobolink surveys in New York state / 7.10.3: |
Breeding birds in Californian oak-pine woodlands / 7.10.4: |
Breeding birds along the Colorado River / 7.10.5: |
Birds of Miller Sands Island, Oregon / 7.10.6: |
Concluding remarks / 7.10.7: |
Illustrative examples / 7.11: |
Lake Huron brick data / 8.1: |
Wooden stake data / 8.3: |
Studies of nest density / 8.4: |
Spatial distribution of duck nests / 8.4.1: |
Nest detection in differing habitat types / 8.4.2: |
Models for the detection function g(x) / 8.4.4: |
Estimating trend in nest numbers / 8.4.5: |
Fin whale abundance in the North Atlantic / 8.5: |
House wren densities in South Platte River bottomland / 8.6: |
Songbird point transect surveys in Arapaho NWR / 8.7: |
Assessing the effects of habitat on density / 8.8: |
Bibliography |
Common and scientific names of plants and animals |
Glossary of notation and abbreviations |
Index |
Introductory concepts / 1: |
Introduction / 1.1: |
Distance sampling methods / 1.2: |