An Antarctic starfish (Odontaster validus) climbs over an Antarctic scallop (Adamisium colbecki) in the coastal Ross Sea. Antarctic starfish are omnivores with a wide range of potential prey and an...
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...
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...
Bison (Bos bison) were important native grazers in the Great Plains. Studies at the Konza Prairie Long Term Ecological Research (LTER) site have shown that bison grazing and periodic fires interact...
A black and white warbler feeding on an insect.
This photograph compares the ventral wings of two individual butterflies of the same species (Bicyclus anynana) that matured during different seasons of the year. The wing on the left is produced...
In this activity, students work with a dataset to investigate energy balance in animals that have different feeding behaviors (diurnal/nocturnal) and diets (e.g., carnivore/detritivore).
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...
In this TIEE experiment, students investigate how ambush predators such as the common ambush bug (Phymata americana) or the common crab spider (Misumena vatia) influence the foraging behavior of...
A golden-winged warbler feeding on an insect
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