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Keyword: savannas

Recognizing and restoring open forests of savannas and woodlands

Science Spotlights Posted on: April 25, 2019
Although not presented in textbooks, open forests were the dominant historical forested ecosystems of the United States. Eastern and western oak forests and southeastern pine forests no longer occur at landscape scales. Management for open oak and pine forests will provide herbaceous habitat, critical to many declining bird and pollinator species.

Open forest management for early successional birds

Publications Posted on: March 27, 2019
Wildlife biologists classify some bird species as early successional because of apparent dependence on early successional vegetation such as forbs, grasses, shrubs, and small trees.

A reconceptualization of open oak and pine ecosystems of eastern North America using a forest structure spectrum

Publications Posted on: November 15, 2018
We present a reconceptualization of forests in eastern North America by differentiating the ecological characteristics of open oak (Quercus) and pine (Pinus) forests from closed successional and oldgrowth forests. Despite historical abundance of savannas and woodlands, the fundamental ecology of open forest ecosystems remains ill-defined when compared to either closed forests or grasslands.

Restoration of temperate savannas and woodlands [Chapter 11]

Publications Posted on: October 04, 2017
Savannas and woodlands are open forest phases that occur along a gradient between grasslands and closed canopy forests. These ecosystems are characterized by open to nearly closed canopies of overstorey trees, relatively sparse midstorey and understorey woody vegetation, and dense, species-rich ground flora. In contrast to closed forests, the dominant and codominant trees in the canopy of open forests often have large, spreading crowns.

Fires, ecological effects of

Publications Posted on: January 31, 2017
Fire is both a natural and anthropogenic disturbance influencing the distribution, structure, and functioning of terrestrial ecosystems around the world. Many plants and animals depend on fire for their continued existence. Others species, such as rainforest plants species, are extremely intolerant of burning and need protection from fire.

Historical and modern disturbance regimes, stand structures, and landscape dynamics in pinon-juniper vegetation of the western U.S.

Publications Posted on: November 18, 2009
Pinon-juniper is one of the major vegetation types in western North America. It covers a huge area, provides many resources and ecosystem services, and is of great management concern.

Private-public collaboration to reintroduce fire into the changing ecosystems of the Southwestern Borderlands region

Publications Posted on: June 18, 2009
Fires caused by lightning or Native Americans were the major ecological factor in the borderlands region of Arizona, New Mexico, and Mexico prior to European settlement. Historical overgrazing and aggressive fire suppression have led to the encroachment of woody vegetation and accumulations of woody fuels in these grasslands.

Abundance of birds in the oak savannas of the southwestern United States

Publications Posted on: June 13, 2006
Oak ecosystems of the Southwestern United States are important habitats for a variety of wildlife species. Information is available on the abundance and habitat preferences of some species inhabiting the more densely structured oak woodlands, but little information is available on these topics for the comparatively open oak savannas.