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Ecological Core Concepts -- Human impacts -- Species introductions

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View Resource A remnant oak-savannah ecosystem, rich in native plant species and also heavily invaded by exotics.

An abandoned 19th century barn is located within a remnant oak-savannah ecosystem in southwestern British Columbia, Canada. The herbaceous vegetation in the foreground includes the pink-flowered...

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View Resource An Arctic fox (Alopex lagopus) captures a Least Auklet (Aethia pusilla) in the Aleutian Islands.

During the 100-150 years since they were introduced to the Aleutian Islands, the Arctic fox (Alopex lagopus) and Norway rat (Rattus norvegicus) have extirpated native seabirds from most of the...

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View Resource An oblique aerial view of the Mullica River showing an invasive reed (Phragmites australis) and two species of native grasses (Spartina spp.).

In this oblique aerial view of Hog Island in the Mullica River, a common reed (Phragmites australis; in green) is visible. P. australis was first observed spreading rapidly on upper Hog Island in...

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View Resource Effects of multiple invasive species in experimental aquatic communities

In this exercise, students first work in small groups to collect background information on what mosquitofish and bullfrogs consume and then modify a food web based on that knowledge. Students then...

View Resource Issues in Ecology, Issue 05: Biotic Invasions

This report is an introduction to exotic species invasions. An exotic species becomes invasive, when it proliferates unchecked across the region in which it was introduced. The transformation from...

View Resource NCEP Exercise-Invasive Species and Mechanisms of Invasions

In this exercise students gain hands on experience by conducting observations in the field. In groups students identify and record all the plants found in a sample plot. Using pooled data from the...

View Resource Pathways to Scientific Teaching, Chapter 5c of 7: Unleashing problem solvers: from assessment to designing research

Can transgenes be kept on a leash?” ask Marvier and Van Acker in the [attached] review article. “No”, they answer, “the movement of transgenes beyond their intended destination is a virtual...

View Resource Pathways to Scientific Teaching, Chapter 7a of 7: Bridging the pathway from instruction to research

The Pathways articles to date were intended to engage faculty in teaching, learning, and assessment, especially in large enrollment courses. The challenge for many faculty who have changed their...

View Resource Using a cascading food web case study to assess the ecological and economic impacts of management decisions

As informed citizens, students should be able to understand and interpret the value of a working ecosystem and the cascading implications of disturbances. We use a case study to introduce students to...

View Resource Vulnerability of High Diversity Habitats to Introduced Species

This Issue focuses on a research article by Stohlgren et al. (2003) and two responses to it that were published in Frontiers in Ecology and the Environment. The article discusses the ecology of...

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