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

Slides:

Advertisements

Similar presentations

BPA Christina Luzier USFWS

Advertisements

Estimating Abundance Weight Sub-sample

POPULATION ESTIMATION LAB How do you estimate the size of a population?

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.

SBI4U Population Dynamics

Daily Response 1)What is the difference between immigration and emigration? 2)What is a limiting factor? 3)Name 3 limiting factors. 4)What happens to a.

There are organisms that display extreme r- or K-strategies, but most organisms have life histories that are intermediate on the continuum, displaying.

Ka-fu Wong © 2003 Lab 1-1 Dr. Ka-fu WONG ECON1003 Analysis of Economic Data.

Ka-fu Wong © 2003 Lab 1-1 Dr. Ka-fu WONG ECON1003 Analysis of Economic Data.

DEMOGRAPHY The study of birth and death processes

Fieldwork. Measuring populations - sampling Usually use transect or quadrat to sample Count number of organisms per sample area, then calculate numbers.

ESTIMATING POPULATION SIZE

Part of the Local Ecosystems Module Biology in Focus, Preliminary Course Glenda Childrawi and Stephanie Hollis Unit: A Local Ecosystem Topic 2: Biotic.

Estimating Abundance.

Chris Bare, Jim Latshaw, Ian Tattam, Jim Ruzycki, and Rich Carmichael Estimating Chinook escapement to the John Day River basin using a mark-recapture.

Populations are dynamic. What influences them? How do we measure them? Why is measuring them useful? Why do different organisms have different reproductive.

14.1 Characteristics of Populations Ewen Lee and Adriena Wong.

POPULATION ECOLOGY. ECOLOGY Study of living organisms as groups Interactions between living organisms (predator-prey, parasitism etc) Interactions between.

Mechanisms driving nonnative plant-mediated change in small mammal populations and communities Dan Bachen.

COUNTING POPULATIONS Estimations & Random Samples.

COUNTING POPULATIONS Estimations & Random Samples.

Characteristics of Populations

2.3.2 Abundance of organisms.. Methods for Estimating Population Size 1. Quadrats 2. Capture/Mark/Release/Recapture (Lincoln Index)

The Diversity of 2 Fields No sheep Sheep. What we will study 1.Difference between the diversity of vegetation in the 2 fields 2.Differences between the.

SELKIRK GRIZZLY BEAR DNA MARK/RECAPTURE ANALYSIS.

What is Population Ecology? 1. Ecology is...  the study of interactions among organisms with each other and with their environment 2.

Methods of Measuring Absolute Density Total counts - count all the organisms present in a population Transect or quadrat sampling - counts along a known.

 3000 Km off the coast of Chile  5 th century – 400 people  Created Moai…had food and war was unknown  Several centuries later…15000!  Not enough.

Populations. Estimating Abundance Population Size Estimating population size –Indices –Density.

BIOL 4240 Field Ecology. How many? “Estimates of abundance themselves are not valuable, and a large book filled with estimates of the abundance of every.

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.

Excursions in Modern Mathematics, 7e: Copyright © 2010 Pearson Education, Inc. 13 Collecting Statistical Data 13.1The Population 13.2Sampling.

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

1 Press Ctrl-A ©G Dear 2008 – Not to be sold/Free to use EstimatingPopulations Stage 6 - Year 11 General Mathematics Preliminary.

Population Dynamics Population dynamics - the study of the long term changes in population sizes and the factors that cause a change Current focus is.

Population Dynamics Population dynamics is the study of the long term changes in population sizes and the factors that cause a change. The current focus.

Mark-capture-release lab

CAPTURE – MARK – RECAPTURE METHOD

Measuring population.

Cricket Mark-Recapture Investigation

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.

Sampling animals. What do you remember? What is biodiversity? What is species richness? Whose formula can be used to put a figure on the biodiversity.

Abundance of Organisms

Observing Populations Cacn Birb Andc. Direct observation is counting each member in a population. Ex: We went to a fish tank and counted all of the fish.

 Occupancy Model Extensions. Number of Patches or Sample Units Unknown, Single Season So far have assumed the number of sampling units in the population.

Unit 5 Populations [The end is getting nearer!]. A. CHARACTERISTICS OF POPULATIONS 1. Terms a. population – a group of individuals of the same species.

Chapter 2 (Part 2) Populations.

Sampling techniques for animals

Abundance of Organisms

Population Dynamics Topic 2

Do Now: Open notebook to lab section. Write the title of the lab, “Studying Population Size Lab”. Write the date. Answer this question… A plane crashes.

The Study of Populations

Chapter 9 p.292 Populations.

POPULATION ECOLOGY.

12.1 Population Characteristics

Do Now: Which ecological level of organization term(s) include both the biotic and abiotic factors which influence an organism or group of organisms? Use.

Estimating Populations

APES Chapter 6.

Measuring Biodiversity

Sampling methods.

Characteristics of Populations

Population: A group of individuals… … of the same species…

Population Dynamics SBI4U.

Unit 2: Ecology Lesson #3: Sampling Techniques

Estimating Population Size Using Mark and Recapture

Capture-Recapture 09/08/2019 Learning Objectives:

Presentation transcript:

Population Dynamics Ms. Byers and Ms. Jacobs

Why Estimate Population Size? To compare populations in different areas To assess the health of wildlife –Take action if required To answer questions about what humans are doing to wildlife

Sampling Methods

Marking Methods Bird Banding Ear Tagging Mammal Tagging

More Marking Methods Pit Tagging Tattooing Branding Fluorescent markers

Toe-Clipping

Mark-Recapture A method used in ecology to estimate population size –Use it when you cannot detect all individuals in a population Other Names –capture-recapture –capture-mark-recapture –mark-release-recapture

Mark-Recapture Trap a sample of live animals on site Mark the animals Release the animals unharmed Allow time for the population to redistribute Return to site, capture another sample Count recaptures Do math

The Lincon-Peterson Index N = Estimate of total population M = # of animals marked on first visit C = Total # of animals caught on second visit R = # of marked animals caught on second visit R/M = C/N N = MC/R

Agriculture Impacts When a forest becomes a farm, the landscape is permanently altered Can wildlife survive in this new habitat? To address these questions scientists compare populations from forest and agricultural landscapes

Amphibians and Agriculture Would you expect to find larger amphibian populations in a pond on a farm (open field) or in a forest? Compare amphibian abundance between the two habitat types Sample amphibian populations on farmland and forest sites

Four Field Sites - 2 Forest Sites - 2 Farm Sites Sample amphibians and estimate populations at each site

Mark-Recapture Assumptions Closed population Tags stay on Marked and unmarked animals have the same probability of being captured Marked and unmarked individuals randomly mix between samples

Limitations Must be able to trap sufficient animals Must be able to sample randomly

Results Was amphibian abundance higher at farm or forest sites? How can you explain your results