Low recruitment of trees dispersed by animals in African forest fragments

Article Abstract:

The effects of forest fragmentation on the disappearance of fruit-eating animals and the recruitment of animal, wind, and gravity-dispersed trees in 80-year-old forest patches in the East Usambara Mountains of Tanzania are studied. The results show that recruitment of seedlings and juveniles of 31 animal-dispersed tree species was more than three times greater in continuous forest and large forest fragments than in small forest fragments.

Management dynamics, Management, Company business management, Forest ecology, Frugivores

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Increased herbivory in forest isolates: implications for plant community structure and composition

Article Abstract:

Studies done on a potential mechanism driving loss of plant species in small, medium, and large land-bridge islands in Lago Guri, a 4300-km2 hydroelectric impoundment in the State of Bolivar, Venezuela is discussed. Results of the study add to the understanding of the role of changed ecological interactions as deterministic mechanisms driving a process of change in the structure and composition of fragmented communities.

Venezuela, Natural resources, Botany, Plant ecology, Plant communities

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Susceptibility of a Northern Hardwood Forest to Exotic Earthworm Invasion

Article Abstract:

Two models are developed to delineate susceptibility of sugar maple in Michigan's Ottawa National Forest to invasion by earthworm communities within various wilderness and non-wilderness sites. Sugar maple susceptibility to earthworm invasion was found to be high for two contributing factors: historical harvests and distance of roads.

Michigan, Models, Environmental aspects, Biological invasions, Invasive species, Introduced species, Ottawa National Forest, Michigan, Ecological integrity

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