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 thinking about plant groups needs to give some thought to ecological interactions while assessing either the consequences of plant invasion and the long term results of administration. Sections of the publication disguise human perceptions of invading vegetation, overview of ecological interactions, direct administration, and law and advocacy. it is usually an appendix with descriptive info for plenty of of the worst weeds.
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Extra resources for Assessment and Management of Plant Invasions
Anthropic systems. 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.
Moreover, in a few specific instances, NI plants may be of ecological value in some systems, playing important structural and functional roles in recovery after disturbance or as surrogates for extirpated indigenous (IN) species (Bowler 1992; De Pietri 1992; Henry 1992, 1993; Lovejoy 1985; Lugo 1988; Whelan and Dilger 1992). Acknowledging that NI plants may be of ecological importance in some systems is gen- 3. , Coblentz 1991, 1993b; Lugo 1990, 1992; Luken 1994; Oelfke 1993; Schwartz and Randall 1995; Temple 1990).
Other cropland pests thriving on sites where soils are repeatedly disturbed, such as velvetleaf (Abutilon theophrasti), are rarely if ever regarded as pests in natural areas. On the other hand, plants regarded as pests in some natural areas may be valued or viewed with indifference in other situations. Brazilianpepper (Schinus terebinthifolius) is a pest in Everglades National Park and other natural areas in southern Florida and Hawaii (Doren and Whiteaker 1990a, 1990b) but is used as an 23 ornamental landscape plant in coastal southern Calfornia (Nilsen and Muller 1980a, 1980b).