Laserfiche WebLink
<br />or myths. Failure to recognize the limitations and <br />tacit assumptions can lead to failures because of the <br />over-application of over-simplified concepts to <br />complex systems (Holling 1995, Holling and Meffe <br />1996). We believe the same is true in ecological <br />restoration. <br /> <br />We believe that many unsatisfactory restorations <br />result from a failure to recognize and address <br />uncertainty, and from a focus on inappropriate time <br />scales. Ecological restoration is trying to do in a <br />matter of years what takes decades or centuries <br />under natural conditions. Expecting complete <br />restoration on human time scales is unreasonable, <br />even where full recovery may eventually occur. <br />Nonetheless, many of our underlying beliefs tacitly <br />assume that systems will return to a "natural" state <br />in fairly short order if they are just nudged in the <br />right direction through adjustments to physical <br />attributes or by regulating species composition. <br />Additional problems arise in defining what is <br />"natural" and in our inability to accept that systems <br />are dynamic and may have multiple trajectories <br />leading to numerous possible outcomes. Finally, <br />because we are extrapolating from oversimplified <br />concepts, ignoring uncertainty may result in <br />surprise and failure because we have not created a <br />system capable of adapting or responding to future <br />drivers or events. Therefore, restorations should not <br />be one-time events, but are likely to require periodic <br />attention and adaptive management to increase the <br />chances of responsive, adaptive, and successful <br />projects. <br /> <br />Based on our experiences as researchers and <br />practitioners in conservation and restoration <br />ecology, we propose five central myths (Table 1) <br />under which many ecological restoration and <br />management projects seem. to be conceived and <br />implemented. Myths have value because they help <br />us to organize and understand complex systems and <br />phenomena. Identifying myths can help make the <br />tacit explicit by revealing assumptions that are <br />otherwise hidden (Holling 1982). However, they <br />remain simplified and potentially misguided models . <br />for understanding and application (Holling 1982, <br />Timmerman 1986). The first Myth, the Carbon <br />Copy, addresses the goal-setting process, and as <br />such, it forms the basis of how restorations are <br />evaluated. The Carbon Copy is closely tied to the <br />remaining four myths, which involve the process of <br />'restoration and management: the Field of Dreams; <br />Fast Forwarding; the Cookbook; and Command and <br />Control: the Sisyphus Complex. We believe that <br /> <br />Ecology and Society 10(1): 19 II <br />htto:/ /www.ecoIOl!.Vandsocietv.oT!!lvoII0/issl/artI9/ <br /> <br />describing. these myths will be useful in <br />understanding how some management or <br />restoration strategies are conceived, designed, and <br />implemented. For example, adherence to different <br />myths may direct actions in divergent directions, as <br />could be the case when choosing between a focus <br />on ecosystem structure (Carbon Copy) or on key <br />processes (Field of Dreams). Examining these <br />myths may also help us better understand why some <br />restoration projects do not meet our expectations. <br />In the pages below, we briefly describe each myth <br />and its assumptions, and give examples where the <br />myth exists. <br /> <br />Our obj ective is not to abandon what we propose to <br />be prevalent myths in ecological restoration-there <br />are elements of truth in each-but to recognize that <br />there are tacit assumptions associated with each <br />myth. Failure to recognize these assumptions can <br />lead to conflict and disappointing results despite <br />large expenditures oftime and effort. Our challenge <br />is to recognize the limitations and not accept <br />sometimes dogmatic beliefs without critical <br />examination. We do not claim that every project is <br />rooted in myth, but suggest that many perceived <br />failures may be traced to over-reliance on one or <br />more of the myths. We do not condemn restoration <br />ecology, but rather provide a means of self- <br />examination so readers can identify from their own <br />experiences what worked and possible reasons for <br />perceived failures. <br /> <br />TIlE MYTH OF TIlE CARBON COPY <br /> <br />The myth ofthe Carbon Copy relates to the selection <br />of restoration goals and end points, and maintains <br />that we can restore or create an ecosystem that is a <br />copy of a previous or ideal state. The myth is rooted <br />in the Clementsian (1936) idea that ecosystems <br />develop in a predictable fashion toward a specified, <br />static, end point or climax. Accordingly, any <br />disturbance or degrading activity will reset the <br />system, resulting in a phase of rebuilding and a <br />return to the previous trajectory of ecosystem <br />development. However, restoration sites are <br />different from those where secondary succession <br />occurs after disturbance (Zedler 2000b), and <br />restoring or creating an ecosystem of specific <br />composition becomes quite difficult. Most <br />successes appear to be only transitory (Lockwood <br />and Pimm 1999). Despite the shortcomings, the <br />myth of a carbon copy persists in ecological <br />