'Population regulation' diaporamas de présentation

BISC530: Biology Conservation Kedong Yin

BISC530: Biology Conservation Kedong Yin. Introduction Habitat fragmentation Demographic Processes on heterogeneous landscapes: Metapopulation dynamics. Demographic Processes: Population Dynamics on Heterogeneous Landscape. What is population demography? Mechanisms of population regulation

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Levels of Ecological Organization in Freshwater Systems

Levels of Ecological Organization in Freshwater Systems. Population. Community. Ecosystem. Lecture Goals To discuss basic controls on population size and population dynamics in freshwater systems.

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Chapter 8 Environmental Science

Chapter 8 Environmental Science . Understanding Populations. Bellringer. http:// www.teachertube.com/viewVideo.php?video_id=50720. Objectives. Describe the three main properties of a population. Describe exponential population growth.

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Populations

Populations . Chapter 19. Populations . Group of organisms of the same species that live in the same place at the same time. Basic terms. Population size- the number of individuals Population density- the number of individuals in a given area or volume

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Predation

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Vertical Diversity (Stratification) & Snags

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Drivers of population-level effects of parasite virulence

Drivers of population-level effects of parasite virulence. Life-history meets meta-analysis Maggie J. Watson Charles Sturt University, Australia. A central goal of population ecology is to identify factors controlling population dynamics. .

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Predation

Predation. Great White Shark and Fur Seal. Predator-Prey Interactions. Effects on populations.

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Module 2 Biocomplexity of the North

Module 2 Biocomplexity of the North. Dactylica arctica. Xanthoria elegens. Algae under Arctic sea ice. Poripidia flavocaerulescens. Objectives. Learning about feedback mechanisms Using feedbacks to meet management goals Properties of ecological systems Material and energy cycles

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61BL3313 Population and Community Ecology

Lecture 04 Population regulation Spring 2013 Dr Ed Harris. 61BL3313 Population and Community Ecology. Announcements -lecture + tutorial today announcements: -R break for this week (use to catch up) -Moodle problem over the weekend -quiz marks this week, answers are up on *Moodle

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Look at the picture on p. 210 of your text.

Look at the picture on p. 210 of your text. Would a change in the number of sea lions have an effect on the orcas? Would it make a difference if the sea lions were the only food source for the orcas?

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Population limitation: history & background

Population limitation: history & background. Both geometric, exponential growth rare in nature--because populations are limited (by amount of resources, by predators, parasites, competitors, etc.)

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Raymond L. Lindeman (1915-1942)

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This is ultimately set by limiting factors:

Carrying Capacity. CARRYING CAPACITY (K) - The population density where births and deaths are equal and population size is constant. This is ultimately set by limiting factors:

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Population Growth Cycles and Stresses

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Presented by Jacob Owen

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Populations

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Limits to Population Growth and Predicting the Impact of Human Population Growth

Limits to Population Growth and Predicting the Impact of Human Population Growth. Elena Velez, Alyssa Rusch hr2. Limiting factors are things or circumstances that prevent a species or population from increasing.

293 views • 8 slides