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Mistletoe can be a keystone species for birds in a wooded environment

A keystone species is one that "influences the ecological composition, structure, or functioning of its community far more than its abundance would suggest." (See http://glossary.eea.europa.eu/terminology/concept_html?term=keystone%20species .) Although the term is often thrown about, demonstrating...

Most Trees, No Matter Type or Where Located, Are Always Close to Thirsty Death

Sometimes a piece of research changes the way one looks at ecosystems. Evaporation from tiny pores in the leaves of trees pulls water up from the roots through thousands of slim tubes, called xylem tissue. When water is scarce, these tubes can develop microscopic air bubbles which block these tubes...