Life Table Applications. Population Sampling Problems –Where is the population? Does it have borders? –How much do you sample for population estimate?

Slides:

Advertisements

Similar presentations

Population Biology.

Advertisements

Population Growth and Regulation

Life Tables These are fake notes for the title page.

MARK RECAPTURE Lab 10 Fall Why?  We have 4 goals as managers of wildlife  Increase a population  Decrease a population  Maintain a population.

FW 491 – Online Ecological Module By: Jessica Caton.

Estimating Abundance Weight Sub-sample

Fish Population Assessment How many fish do we have?

Population Ecology. Population Demographics Demographics are the various characteristics of a population including, Population Size, Age Structure, Density,

Population Parameters - Estimating populations sizes Estimate populations sizes – Mark & Recapture method Lincoln-Peterson estimate no. of animals marked.

Wildlife Tagging SVN3E. Sampling Wildlife It can be difficult to make an exact count of the populations of animals, birds, and fish that move around their.

CHAPTER 52 POPULATION ECOLOGY Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section A: Characteristics of Populations 1.Two.

DEMOGRAPHY READINGS: FREEMAN, 2005 CHAPTER 52 Pages

Age and Growth Growth & age patterns Measurement techniques.

A2A2 H1H1 H2H2 The food web Primary producers Primary consumers D Detritus and associated Microflora (bacteria/fungi) P Death and sedimentation herbivore.

Chapter 10 Population Dynamics

DEMOGRAPHY The study of birth and death processes

Brown Bear Ursus arctos Matthew Lacks Endangered Species Project.

Population Biology AP Biology Image taken without permission fron newsletter/2003/april03/SLElephantbyWater.jpg.

CHAPTER 1 / SECTION 2 STUDYING POPULATIONS.

Chapter 45 Population Ecology: A Summary AP Biology Spring 2011.

Population Ecology.

CLOSED CAPTURE-RECAPTURE

Lab 12: Population Ecology. What is Population Ecology? Ecology: study of interactions between organisms and their environment Population: group of conspecifics.

Ch.22 Populations and Communities. Section 1: Living Things and the Environment Ecosystem- All the living and nonliving things that interact in an area.

Chapter 5 Population Ecology. Counting individuals What constitutes an individual organism?

Population Growth. Population Dynamics What types of things affect the size of a population? What types of things affect the size of a population? Immigration:

Chapter 21, Population, Urbanism and the Environment Key Terms.

Understanding Populations

What kind of plants do we see in a climax community?

SELKIRK GRIZZLY BEAR DNA MARK/RECAPTURE ANALYSIS.

55.2 How Do Ecologists Study Population Dynamics? To understand population growth, ecologists must measure population processes as well as population traits.

Announcements  Wednesday Lab: Turn in Animal Behavior Lab to the black tray.  Pick up Chapter 51 posters on Lab Table 2. Any remaining posters will be.

Population Parameters – Chapter 9. Population – a group of organisms of the same species occupying a particular space at a particular time. Demes – groups.

Biodiversity and Measuring Abundance Lab Manual Chapters 3, 7, and 13.

Population Ecology Chapter 22 notes. Balancing Populations Environmental factors must be in balance for a population to survive. What are some environmental.

Dynamic biological processes influence population density, dispersion, and demographics Chapter 53, Section 1.

Population Ecology. Population Def. a group of individuals of a __________ species living in the same area Characteristics of a popl’n 1)Size 2)Density.

Sources of Fish Decline Habitat disruption Breeding areas Larval development areas Bottom structure.

Plant Ecology - Chapter 5 Populations. Population Growth Births Deaths Immigration Emigration.

Uniform Clumped patterns May result from direct interactions between individuals in the population  territoriality.

Mark-capture-release lab

Studying Populations and Limiting Factors. Population density The number of individuals in a specific area.

Population Ecology. What is a Population? Population - A group of individuals of the same species that live together and interbreed Populations: o Share.

POPULATION DYNAMICS. Habitat: Set Source: Cunningham/Saigo, Environmental Science, 1999.

Cricket Mark-Recapture Investigation

Populations. What is a population? -a group of actively interacting and interbreeding individuals in space and time.

Populations & Population Growth Populations Population size - number of members in a population 2 ways to estimate population size: 1.Random sampling.

(CHAPTER 1 / SECTION 2) STUDYING POPULATIONS. A group of organisms from the same species occupying the same geographical area. This area may be difficult.

Estimation of Vital Rates: Use of Index Statistics? Relevance of Detection Probability.

Capture-recapture Models for Open Populations “Single-age Models” 6.13 UF-2015.

Chapter 8 Estimating Population Size: Capture-Recapture Model Examples: Estimating number of blue whales Estimating number of fish in a lake Estimating.

Objective: You will be expected to estimate the size of a sample population using the mark-recapture technique. Be able to apply the technique to new population.

Population Dynamics Ms. Byers and Ms. Jacobs. Why Estimate Population Size? To compare populations in different areas To assess the health of wildlife.

Capture-recapture Models for Open Populations Multiple Ages.

Chapter 55 Population Ecology Environmental factors Temperature Water Sunlight Soil.

Abundance of Organisms

Closed Capture-Recapture Models 2 Sample Model Outline: Model description/ data structure Encounter history Estimators Assumptions and study design.

NEXT WEEK: Computer sessions all on MONDAY: R AM 7-9 R PM 4-6 F AM 7-9 Lab: last 1/2 of manuscript due Lab VII Life Table for Human Pop Bring calculator!

Matrix modeling of age- and stage- structured populations in R

Population Biology AP Biology Image taken without permission fron newsletter/2003/april03/SLElephantbyWater.jpg.

Studying Populations.

Abundance of Organisms

Estimating Populations

Chapter 52 ~ Population Ecology

Mark Recapture.

Studying Populations Chapter 1 Lesson 2.

Population Dynamics SBI4U.

Estimating Population Size Using Mark and Recapture

Population Ecology.

Environmental Science

Presentation transcript:

Life Table Applications

Population Sampling Problems –Where is the population? Does it have borders? –How much do you sample for population estimate? Some estimates indicate that as much as 50% of the population needs to be captured at some time.

Live Census Capture-Recapture (Peterson method)

Assumptions Assumptions of the Petersen Method –Population is closed, so N is constant (no immigration or emigration) –All animals have equal chance of getting caught in first sample –Marking individuals doesn’t affect catchability (not trap shy or trap happy) –Marks are not lost between sampling periods –Marks are reported on discovery in second sample

Schnabel Method Series of samples, marking each time –C t = R t + U t C t = Total # of individuals caught in sample t R t = # of individuals already marked when caught in sample t U t = # individuals marked for 1st time & released in sample t

Application of Method

Omnivores

Yellowstone Grizzlies

Life span Adults can live approximately 25 years.

Average age composition: Cubs 19% Yearlings13% 2 yr. olds11% 3-4 yr. olds13% Adults14%

Grizzly claws

Den Excavated - don’t use natural shelters About 5 X 4 X 8 feet Entrance normally faces north Entered in snowstorm - usually late November

Dump Congregations

Trapping

Data Information is taken for heart and other physiological data

Weight is taken Sex recorded

Aging Teeth impressions Molar extraction

Tag Application Ear tag Lanyards

Radio Collar

Bear taken to more remote area Often returned

Triangulation

Den Tracking to Den Data taken including temperature

Satellite Data Recording Data for den temperature and bear body temperature are recorded daily

Sensor Placement Temperature and light sensors –In den –On bear –Outside den

Life Tables Survivorship Data –Follow population over time –Census population Death Data

General Form

Cohort (Horizontal, Dynamic)

Time Specific (Vertical or Static)

Average of many years’ census (Combines static tables) Combination

Life Table & Reproduction

Values Over Time

Reproductive value The average contribution to the next generation that members of a given age group in a population give between their current age and death.

Reproductive value Reproductive value at an individual age OR

Reproductive value Phlox drummondiiFemale gray squirrels Sum of current output and future possibilities taking survival into account