| Description |
vii, 163 pages : illustrations ; 25 cm |
| Contents |
1. Planning and preliminary considerations -- The need for sampling -- The scale of the study -- Safety -- Care for the environment -- Taxonomy -- Recording, labeling and note taking -- Data security and processing -- Effect of the time of year on sampling -- Effect of the time of day on sampling -- Types of population estimate -- Defining the habitat unit -- Quadrat sampling -- Subdividing the habitat unit -- Statistical considerations -- 2. Estimating the reliability of estimates and testing for significance -- Descriptive statistics for a site -- Comparing two sites -- Comparing the medians of a number of samples - the Kruskal-Wallis test -- Measuring the correlation between variables - Spearman's rank correlation -- 3. Sampling a unit of habitat - estimating absolute population number -- Sampling discrete habitat units -- Frame quadrats -- Point quadrats -- Using corers and high-sided quadrats -- Grab sampling in lakes or the sea -- Sampling invertebrates and small fish in ponds and streams -- Example application -- Sampling a known volume of water -- Using a suction sampler for grassland invertebrates -- 4. Mark-recapture methods for population size estimation -- Important assumptions -- The Petersen-Lincoln estimator -- A simple method for open populations - Bailey's triple-catch method -- A more complex method for open populations - the Jolly-Seber model -- Methods for marking animals -- Example applications -- 5. Distance sampling methods for population estimation -- Census methods -- Point and line survey methods -- Plotless density estimators -- Example applications -- Estimating population size by removal sampling -- Example applications -- 6. Comparing the magnitude of populations - trapping and other relative abundance methods -- Factors affecting the size of the catch -- Example applications -- 7. Using signs and products as population indices -- Leaf damage on trees or shrubs -- Frass as a measure of tree-living insects -- Discarded pupal cases around ponds and exuviae from trees -- Assessing density by counting webs in grassland or heath -- Using casts to estimate the activity of worms on land or on intertidal flats -- The marks and signs made by fish -- Terrestrial vertebrate signs -- 8. Estimating age and growth -- Using size-frequency histograms -- Using growth checks for age determination -- Using biochemical methods for age determination -- Marking bony parts for growth studies -- Describing growth mathematically -- 9. Life-tables and population budgets -- The construction of a budget -- The description of budgets and life-tables -- 10. Alpha diversity, species richness, and quality stores -- Different types of diversity -- Estimating species richness -- Comparing species evenness or equitability -- Alpha diversity indices -- Habitat quality scores -- 11. Species along environmental gradients - beta diversity -- Example calculations -- Alternative approaches for beta diversity -- Example applications -- 12. Comparing and classifying communities -- Organizing the data for analysis -- Searching for similarity -- Multivariate analysis -- Identifying influential environmental variables -- Measurement of interspecific association |
| Notes |
Formerly CIP. Uk |
| Bibliography |
Includes bibliographical references (pages [152]-159) |
| Subject |
Ecology.
|
|
Ecology -- Methodology.
|
| LC no. |
2002026255 |
| ISBN |
1405102446 paperback |
|
