Assessment and Management of Plant Invasions by Carla M. D’Antonio (auth.), James O. Luken, John W. Thieret

By Carla M. D’Antonio (auth.), James O. Luken, John W. Thieret (eds.)

Biological invasion of local plant groups is a high-priority challenge within the box of environmental administration. source managers, biologists, and all these interested in plant groups needs to think about ecological interactions whilst assessing either the consequences of plant invasion and the long term results of administration. Sections of the publication hide human perceptions of invading crops, review of ecological interactions, direct administration, and rules and advocacy. it is usually an appendix with descriptive info for plenty of of the worst weeds.

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Sample text

These contain novel assemblages of IN and NI plants. , Luken 1990, 1994; Whitney and Adams 1980). 3. Impacted natural systems. These are characterized by intense or prolonged anthropogenic disturbance in the recent past and also may contain a mix of IN and NI species. Examples include severely grazed grasslands, forests subjected to intense, shortrotation harvest, and heavily used recreation areas. , "improved") through restoration and recovery leading to either an anthropic system or an intact natural system.

Untransformed ecosystems) (Macdonald et al. 1989). Invaders are spreading into areas where they are not native (Rejmanek 1995). Invasive species are introduced species that have become pests (Usher 1988). Invasive plants are introduced species that expand their population (and distributional range) in the new geographical location, without further human intervention (Usher 1991). A plant that has moved into a habitat and reproduced so aggressively that it has displaced some of the original components of the vegetative community (White et al.

Williams CE 1993b, 1996). What I advocate, however, is that more effort be directed at determining the ecological value of NI plants across systems, particularly in those most often ignored by ecologists: human-dominated and humanimpacted systems (McDonnell and Pickett 1990; McDonnell et a1. 1993). Ecological Value: A Simple Conceptual Model Another aid in assessing potential value of NI plants is the development of a systems-based conceptual model delineating an ecological value threshold across or within systems of concern (Fig.

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