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Ecological Core Concepts -- Interspecific interactions -- Competition

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View Resource A coral-dwelling goby (Gobiodon histrio), one of several species that coexists among coral by means of a competitive lottery.

Habitat space is a limiting resource for coral-dwelling gobies. The species pictured, Gobiodon histrio, coexists with an ecologically similar species in the same genus, Gobiodon erythrospilus, by...

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http://www.esajournals.org/doi/abs/10.1890/03-3100
View Resource An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni).

An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni). In many mutualistic species interactions, a suite of species in one guild exchanges...

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http://www.esajournals.org/doi/abs/10.1890/05-0465
View Resource An Argentine ant worker (Linepithema humile) tends mealybugs in exchange for honeydew (visible in its mandibles).

An Argentine ant worker (Linepithema humile) tends mealybugs in exchange for honeydew (visible in its mandibles). The Argentine ant is a widespread and ecologically damaging invasive species native...

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http://www.esajournals.org/doi/abs/10.1890/0012-9658%282007%...
View Resource Bayberries (Myrica pensylvanica)

In this close up view of bayberries you can clearly see a whitish waxy coating. Bayberries are boiled to melt this wax for use in bayberry scented candles. One of the berries has been nibbled by a...

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View Resource Black and White Warbler

A black and white warbler feeding on an insect.

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View Resource Effects of Eastern Hemlock (Tsuga canadensis) on the Establishment of Interspecific Seedlings

In this Experiment, students investigate the inhibitory effects of Eastern Hemlock trees on establishment of neighboring woody plants. Some years ago, one of the faculty in the Biology Department at...

http://tiee.esa.org/vol/v1/experiments/hemlock/hemlock.html
View Resource Exploring the Lotka-Volterra Competition Model with Two Species of Parasitoid Wasps

In this Experiment, students design an experiment to examine intraspecific and interspecific competition using two species of parasitoid wasps (Nasonia vitripennis and Melittobia digitata). Students...

http://tiee.esa.org/vol/v2/experiments/wasps/abstract.html
View Resource Foraging and Flocking Behavior

In this laboratory exercise, the following issues are examined: 1) why neither predators nor prey go extinct when there is a long period of nonrenewal of the prey population 2) the effects of...

View Resource Golden-winged Warbler

A golden-winged warbler feeding on an insect

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View Resource Impala (Aepyceros melampus) graze in a grassy patch in the Hluhluwe-iMfolozi Park, South Africa.

Impala (Aepyceros melampus) graze on grass in the Hluhluwe-iMfolozi Park, South Africa. Grass is a major component of the diet of impala and several other species abundant in the park. A recent study...

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http://www.esajournals.org/doi/abs/10.1890/0012-9658%282006%...
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