This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. Conservation Planning: Lessons from the Spotted Owl R. J. Gutierrez1 I Abstract -The spotted owl (Strix occidentalis) has helped natural resource managers. focus on the appropriate scale of management (single species versus larger systems). While larger scale management systems are necessary, endangered species management is relevant. The scientific process and the presence of empirical knowledge are necessary to establish scientific credibility. Scientific credibility is the key to acceptance of conservati.on plans by the courts, Congress, and the public. Scien~e as a process includes not only gathering knowledge but also communication, appropriate use of models, appropriate inferences, peer review, and other features. The relationship between wildlife biologists and forest managers has deteriorated as a result of this conflict. Perhaps this is due to the differences in operational and philosophical paradigms that govern each group. Another reason could be the education process prevalent within these different paradigms. The educational system could playa greater role in preparing future resource specialists for the challenge of managing complex ecological systems. The lessons learned from the spotted owl controversy are relevant not only to endangered species but also to ecosystem management and new forestry initiatives. We probably know more about the status and ecology of the spotted ow I than of any other threatened or endangered species (Gutierrez 1993a). Most of this information stems from research culminating in the past decade. This information base has allowed science-based management plans. Since my research group and I are associated with a university, our work has an air of independence because we presumably have no vested interest in the outcome of the research and political pressures may be less than for government scientists. Finally, I am a member of both the northern spotted owl recovery team and the California spotted owl technical team. In view of my independent research and management involvement, I wish to share my perspectives on conservation planning for the spotted owl and the lessons I have learned. I present some insights I have gained in this process as they may affect future conservation planning, particularly "New Forestry" initiatives. Although many professionals believe the spotted owl is a major obstacle to forest management, I believe the bird galvanized our recognition that ecological systems cannot be managed piecemeal. INTRODUCTION More has been said or written about the spotted owl occidentalis) than any other threatened or endangered species because of its association with ancient forests. The bird has declined in many places primarily because of logging its primary habitat (Gutierrez 1993b). As a result of past declines and future projected declines in its habitat both the northern (S. o. caurina) and Mexican (S. o. /ucida) subspecies have been declared threatened (USDI 1990, USDI 1993b). At least 9 management plans have been proposed to maintain viable populations of various spotted owl subspecies (USDA 1988, Thomas et aI. 1990, USDA 1991, Johnson et aI. 1991, SOWS 1991, USDA 1992, Verner et al. 1992, Thomas et al. 1993, USDI 1993a). Status and literature reviews have become commonplace because of the explosion of knowledge about this owl (see reviews in Gutierrez 1993a). (Strix 1 R. J. GutifJrrez is Professor of Wildlife Management, Department of Wildlife, Humboldt State University, Arcata, Califomia 95521. 51 LESSONS FROM THE SPOTTED OWL: THE ROLE OF SCIENCE IN RESOLVING CONFLICT by wildlife biologists and forest managers) theory of maintenance of genetic diversity (Fnmklin 1980). Since loss of genetic diversity was receiving much attention in the budding "conservation biology" field (Soule and Wilcox 1980), it was assumed that genetic diversity was a key to maintaining spotted owls. The SOMA plan lacked credibility because simple facts of natural history (e.g., spotted owl home ranges are on average much larger than 405 ha; owls usually exist as adjacent rather than isolated pairs) suggested that this plan neither accounted for home range needs nor considered social and population dynamics. Further, it was quickly shown that genetic considerations were unimportant relative to short-term demographic crumge (Barrowclough and Coats 1985). Thus, not only was the theory irrelevant to the problem, but also the structure of the SOMA system was inappropriate in light of natural histOlY. Empirical knowledge has repeatedly proven to be a powerful force in developing spotted owl plans. The northern subspecies was listed, in part, on the basis of declining trends in many owl populations, the absence of· owls in areas where they were expected (e.g., Western Washington Lowlands Province), and declining habitat trends (USDI 1990). The data showing decline were birth and death rates estimated from capture-recapture studies. The absence of owls from certain areas was noted from detailed sUlVeys throughout the bird's range. The inference of declining habitat was based on owl habitat selection studies (e.g., Forsman et al., 1984) and rates of logging. In fact, no empirical study has not demonstrated that spotted owls show strong selection for either primary (old growth or mature) forests or forests with complex structure and relatively large trees (see Bart and Earnst 1993 for a summary). Knowledge is strength because it supports a planning endeavor. It provides the mechanism for articulating and defending the plan to decision-makers. It also allows decision-makers to make informed choices if scientists clearly intetpret the inferences taken from data (see below). Although many wildlife managers are concerned over the amount of money spent on spotted owl research, it is justified for the following reasons. The spotted owl is the first species declared threatened when populations were still relatively widespread. Thus, the question seems to have been "how many owls do we need?" This question is often posed as " minimalist" theory (i.e., minimum viable populations, e.g., Shaffer 1987). In order to answer the question, basic ecological information is needed. Following the acquisition of this information, a theoretical framewOlx is needed to predict the consequence of various impacts on owl populations. This means that we must be able to model population dynamics and habitat trends over time. Finally, populations must be monitored to assess the efficacy of the management plan. While a huge amount of money has been spent on spotted owls, the original questions were beyond what wildlife biologists had confronted previously and this warranted the expenditures. In any event, all of this money is equivalent to old growth timber value within 1-2 owl home ranges at today's prices! Further, nearly all scientists agree Science as a Process Throughout the spotted owl conflict, the role of science as a process has been shown to be decisive in litigation, judicial review, congressional support, and public acceptance of management plans or inferences about the fate of the owl. Key features of this scientific process have been repeatability and generality of results; full disclosure of methods, experimental design, analytical process ana results; and willingness of investigators to present inferences drawn from the results. The objectivity and openness with which individual scientists have operated have been critical to the fate of plans. Even when a plan such as USDA (1988) has been rejected, it was rejected because the preferred alternative carried an unacceptable risk of failure in the eyes of the court aDd concerned citizens. This level of risk was noted by the scientists themselves (see also Marcot and Holthausen 1987, USDA 1988). Mwphy and Noon (1992) described the development of the Interagency Scientific Committee's (lSC) spotted owl management plan. This plan has been challenged repeatedly by the timber industry, individual foresters, advocate scientists (those scientists hired specifically to challenge the plan), and lawyers. The plan sUlVived because of 1) the scientific process used to develop the conservation strategy; 2) the scientists' willingness to articulate the process leading to the inferences about the potential response of the owl to a reserve design; and 3) the empirical knowledge about the owl that supported the plan. It is evident that courts, politicians, and the public are becoming more sophisticated in forestry related issues. Thus, those advocating more holistic resource management should be aware that the process they follow as well as the knowledge they use to support novel approaches to sustainable resource exploitation will be heavily scrutinized. The days of pronouncing change without science-driven plans are over. Facts Theory can be a powerful tool in the development of endangered species conservation plans. However, it pales in comparison to empirical knowledge about the life hiStOlY of a species. A theory used to develop a plan without an empirical base will not be scientifically credible, if an alternative plan is supported by natural or life history infonnation For example, the first U. S. Forest Service northern spotted owl management plan called for 405 ha spotted owl management areas (SOMA) to protect suitable habitat (see USDA 1988). In addition, this plan called for as few as 500 SOMAs. The number 500 was chosen on the basis of a widely misunderstood (i.e., 52 economic ones. This and all other spotted owl conselVation plans have been driven in part by economic considerations (Thomas and Verner 1992). The ISC developed a habitat reserve system only after a series of hypotheses were tested regarding population stability and habitat selection (Thomas et al. 1990). Empirical knowledge about the birds supported those tests. Finally, population dynamics modeling was used to structure the reselVe design (specifically, the number of reselVes and their sizes). Thus facts and theory led to a reselVe design that was more appropriate to the conselVation of owls than was the SOMA plan However, the reselVe design i~lf is still a hypothesis that needs to be tested (Thomas et al. 1990). To develop a management plan for the California spotted owl (S. o. occidentalis), a technical team was fonned by the U. S. Forest Service (Verner et aI. 1992). In contrast to northern spotted owls, California spotted owls were relatively unifonnly distributed and it was not certain that populations were declining (see Verner et aI. 1992). However, it was evident that California spotted owls were habitat specialists and that their habitat was declining under proposed forest haIvest strategies (Verner et aI. 1992). A reselVe design like the one proposed by the ISC was rejected on the basis of empirical information Verner et aI. (1992) developed an interim plan that protected limited habitat around individual owl sites and also protected the large (> 76 cm) trees throughout the Sierra Nevada that characterized California spotted owl habitat. Thus, a plan was conceived that was appropriate to the data. The California spotted owl plan has withstood withering attacks by foresters and the timber industry partly because inferences drawn were based on empirical information Much has been said regarding the role of scientists as advocates. Wildlife management evolved in a conselVative arena. Thus, many wildlife scientists are reluctant to advocate a position on conservation decisions. Each scientist must choose whether to be an advocate or to remain neutral regarding his or her own information However, I believe that scientists have an obligation to explain their woIk as well as the inferences allowed by their woIk because they know the data and its limitations best. If a scientist does not advocate action based on his or her woIk, many others will do the same. that a pro-active approach to conselVation (i.e., when a species is still relatively abundant) is much less costly than" emergency room" approaches. Models Models are important to assess potential affects of either population trends or management impacts on long-tenn viability of the population However, models cannot replace empirical knowledge because models should be based on empirical knowledge. From my non-model builder's viewpoint, models are tremendously influential. Models themselves have fonned the basis for arguments about the reliability of a plan in political and legal settings. We as scientists and resource managers must stress the fact that models are only tools and are only as good as their foundation They should be used in an exploratory fashion and given credence only after empirical testing. If models are allowed to become' the focus of conselVation planning in lieu of empirical infonmtion, we will see a chaotic future in conselVation as advocate scientists produce a battery of dueling models (e.g., see Boyce 1987). In summary, appropriate management plans are based on knowledge and basic research is needed to achieve this knowledge. Models are tools that can be used to explore patterns suggested by knowledge. Comm unication Presentation of information is as important as its acquisition Decisions-makers, faced with economically consequential choices, naturally tend to favor economic considerations. This is true of the spotted owl issue (Thomas and Verner 1992). Therefore, it is important that the manner in which information is presented to decision-makers be unambiguous and contain information that not only they can use but also those who challenge those decisions can use. As scientists we have an obligation to present the entire set of facts. One example is the presentation of point estimates and measures of their variability. This simple information can make the difference between the success and failure of a plan (e.g., the SOMA plan). Peer Review In peer review, qualified scientists review the woIk of other scientists. In order to be effective, referees must be chosen by a neutral third party to avoid a conflict of interest. Ideally, referees are unbiased, honest, and knowledgeable. Referees review the experimental design, methods, analysis, logic, and inferences in a rigorous manner. Peer review is absolutely necessary for the progress and integrity of science and scientists alike. It is also important for management plans to be subjected to peer review not only for their scientific content but also for the inferences that directed each decision within the plan (e.g., Appropriate Inferences Appropriate inferences drawn from empirical or theoretical woIk have been critical to the acceptance of conselVation plans. The adoption of a 405 ha SOMA was an inappropriate inference, given available information on owl home range sizes. This figure actually fell below the obselVed range of owl home range sizes: 408 ha of old forest (Forsman et al. 1984). The recommendation of 405 ha SOMAs was made not on scientific grounds but on 53 spotted owl the cost of management would be prohibitive. Thus, the owl controversy sharpened the focus of conservation planners and politicians alike on the issue of single species management as a conservation strategy. It was clear when I wotked with the northern spotted owl recovery team that the owl was the tip of the "species iceberg." Anthony et aI. (1993) demonstrated that while the recovery plan would help conserve old forest wildlife it would not assure their future viability. Concurrently, the court was forcing the U. S. Forest Service to expand the spotted owl analysis to include other species associated with late seral stage forests (Thomas et aI. 1993). Conservation planners and land managers have been expanding their horizons as exemplified by the U. S. Forest Service's new scientific analysis team report on the spotted owl and other species (11lomas et al. 1993), New Perspectives Initiative by the U. S. Forest Service (Kessler et al. 1992) and ecosystem management ideas (e.g., Swanson and Franklin 1992, Franklin 1993). Despite our willingness to invoke new paradigms of forest management, our knowledge of the impact of forestry and other extractive resource uses on wildlife has been rudimentaIy at best. Franklin (1993) argues that ecosystem management is the only course of action However, the spotted owl and other endangered species are still relevant issues even in an expanded philosophy of management. For one thing they help focus our attention on more broadly defined problems like habitat conservation. In addition, some endangered species have such narrow habitat requirements and limited distribution that they must receive individual protection and attention Thus, both approaches must be wed together. Contrary to popular belief, endangered species management, in general, is not disruptive to other activities, nor need it be a piecemeal protection program (Wilcove et al. 1993). a reserve plan vs. a non-reserve plan). Scientific wotk receiving the benefit of such scrutiny usually is held in higher regard than non-peer reviewed work. It has been the modus operandi of most spotted owl scientists to seek peer review. In addition, all recent conservation plans have been peer reviewed by appropriate scientific societies. These evaluations have given current spotted owl management plans scientific credibility because the scientists and planners have invited criticism and evaluation In contrast, many documents propose alternative management plans that have been publicized without peer review (e.g., Craig 1986, SOWS 1991, Anon. 1991). These documents almost uniformly lack scientific credibility (e.g., see Sirnberloff 1989 for one review). A corollaty of peer review is that authors of plans, reviews,. or scientific documents should be identified. Recently, anonymous reports have appeared that claim no specific author (e.g., Anon 1991). These anonymous reports lack credibility because authors are not identified. I Delphi Approach The "Delphi Approach" is a fonn of professional judgment. If a rigorous, quantitative analysis cannot be made, a consensus among experts can be used to drnw inferences or to develop tentative aspects of conservation plans. This approach is well recognized as the basis for many of the Habitat Evaluation Procedures of the U. S. Fish and Wildlife Service. One of the few "weak" links in the ISC strategy (11lomas et al. 1990) is the application of the " 50-11-40 rule" . This construct states that at least 50% of the landscape not explicitly protected within owl reserves should be covered by trees of at least 11 inches diameter at breast height and also be covered by 40% canopy closure. This rule presumably facilitates juvenile dispersal (Thomas et al. 1990). Yet there is a paucity of infonnation regarding habitat selection by juvenile spotted owls. Thus, there is little empirical support for this "rule", but its acceptability lay in the professional experience of the ISC as well as their honesty and openness following their recommendation. In addition, science as a process governed their deliberations. The delphi approach under some circumstances is acCeptable if there is no other alternative. In fact, it appears that the courts are willing to accept professional judgment in these matters if there is no other alternative. I propose a "litmus test" for a delphi procedure. lbat "test" is the willingness of the individual scientists to defend the plan Often a weak link in a plan such as the 50-11-40 rule is considered a fatal flaw, but Mmphy and Noon (1991:776) argue that a plan is a strong as its strongest link rather than as weak as its weakest link. RELATIONSHIPS AMONG RESOURCE PROFESSIONALS Professional relationships deteriorated between foresters and wildlife managers (and conservation biologists) during the spotted owl controversy. Part of this deterioration is the result of a changing emphasis in wildlife management from game management (where most game species are edge species and therefore often" benefit" from timber haIvest) to general wildlife management (where timber haIvest may be detrimental to some species). The other part, in my opinion, has to do with the educational framewotk of each discipline. In the past two decades I have never heard a forester say that he/she could not achieve some objective or "desired future condition" (with the exception of" recreating" old growth systems). This is not meant as a slanderous rematk but merely illustrates the fundamental difference and philosophy upon which our educations are based. I present a few of these differences below. Single Species Management One of the most controversial aspects of endangered species management is the high cost of managing species like the spotted owl. If every species received the same attention as the 54 is predictable (Le., there is little or no uncertainty). Some possible reasons for the certainty expressed by foresters are the agricultural paradigm discussed above, their view of ecological succession, and the educational process itself. A debate raged among ecologists during the early part of this century on the nature of ecological succession One school of thought proposed that succession was probabilistic (Gleason 1926) and the other proposed that it was detenninistic (Clements 1916). Ecologists now believe that succession is generally probabilistic for a variety of reasons (Drury and Nisbet 1973). However, foresters apparently harbor a notion that succession is detenninistic becausei' if it really were probabilistic, there would be a higher level of uncertainty in the outcome of silvicultural prescriptions. To be sure, one aspect of silviculture is to reduce the probabilistic nature of succession through manipulation (e.g., site preparation, fertilization, herbicide application). Nevertheless, the confidence expressed by foresters must be a function of their belief that succession will follow a predictable path In contrast, wildlife biologists generally acknowledge uncertainty about the outcomes of habitat manipulation for non-game and endangered species (e.g., Shaffer 1987, Mwphy and Noon 1991). I cannot speak with much authority on the educational process of foresters, but I can about wildlife biologists. Humboldt State University has one of the largest wildlife programs in the United States. Thus, my colleagues and I teach many students each year. It is a cornerstone of our philosophy to express and illustrate the uncertainty of biological prediction and management planning. Rather than teaching that uncertainty is a weakness we teach that it is a strength because it forces one to WOIK within one's limitations and to consider the consequences of one's actions. Thus, it serves to temper predictions and to err on the conservative side of actions that may affect species, particularly endangered ones. From my limited interactions with forestty students at four universities I have an impression that scientific uncertainty in forestty is not expressed as a philosophical component of their curricula. As long as disciplines operate within different paradigms they have a lower chance of meaningful interdisciplinary WOIK. Rather than being willing partners in creating novel solutions to problems, one seems to be dragged along by the other. My experience with spotted owls and forestty issues has taught me that there is little trust between forest managers and wildlife biologists. This lack of trust was explicitly addressed in the ISC report (Thomas et al. 1990). It was a topic of discussion many times within the recovery team. More recently, Interior Secretary Babbitt openly expressed this lack of trust in public forum. Finally, even foresters themselves recognize that there are fundamental problems with traditional forest management, particularly within the U. S. Forest Service (e..g, see the newspaper "Inner Voice" ). How do we restore trust and regain our working relationship as resource managers? We have to re-assess the philosophical and scientific basis upon which our disciplines operate. The willingness of wildlife biologists worlcing with spotted owls to The Agricultural Paradigm Forestty operates primarily under an agricultural paradigm while wildlife management operates under an ecological paradigm. The agricultural paradigm is driven by the fact that one can cut trees (as a crop), prepare the soil, plant seedlings or seeds, fertilize the new crop or allow it to grow on stored nutrients, and then harvest the mature crop. This cycle can be repeated until the soil is exhausted or the system is ecologically disrupted (Maser 1988). The ability to achieve a desired result like growing a tree crop (at least in the short tenn) is not equivalent to achieving the replication of a myriad of complex forest ecological interactions (Maser 1988). Under the ecological paradigm, forests are viewed as ~omplex systems with many structures and functions. Conversely, under the agricultural paradigm forests are viewed as areas that contain economically valuable trees. It is generally believed by foresters that they can "recreate" spotted owl habitat. In fact, one well known forest ecologist, speaking at President Clinton's forest summit, stated that foresters could recreate spotted owl habitat but not old growth. A wildlife biologist's question is "how can we recreate spotted owl habitat when we do not know what it is?" In order to understand truly a species' habitat we should know not only the structure of its habitat but what regulates the population and how regulatory mechanisms are related to habitat conditions. For the spotted owl, we do not understand population regulation nor is the information on habitat structure well developed (e.g., there is not a published paper on habitat characteristics of northern spotted owls north of the California border!). Thus, the ability to foster tree growth through silvicultural practices (agricultural paradigm) is not equivalent to "recreating" owl habitat (ecological paradigm). The current occupation of previously logged forests by spotted owls is not evidence that we can "recreate" owl habitat. These birds nearly always occupy regenerating forests with residual old forest components. We still do not know if these owls constitute viable populations nor if foresters can consistently derive these conditions in a timely manner through silviculture. Of course, the fact that we do not know the critical features of owl habitat does not mean that we should not attempt forestty experiments designed to maintain owl habitat. But these experiments should be done in a replicated, rigorous fashion that lends scientific credibility to the results (Mwphy and Noon 1992, USDI 1993). For that matter, all new forestty initiatives should be considered experiments because of the uncertainty in their outcomes (see below). The Uncertainty Principle Uncertainty is the nature of science. Mwphy and Noon (1991) discuss this fact in relation to their experience while woIking on the ISC strategy. Even some politicians recognize this feature of science (e.g., Gore 1992:38). Yet when discussing forestty and its implications for spotted owl habitat management, I am left with the impression that many foresters believe silviculture 55 As part of the work of the northern spotted owl recovery team and the California spotted owl technical team, each team wished to know how much owl habitat remained, where it was located spatially, what were the past cutting patterns and history, where the future haIvest was going to occur, etc. We were unable to answer these questions. Often the data were not computerized nor cataloged for easy retrieval. Process, procedures, and data bases on forest resources varied by national forest and sometimes by forest district. Our attempt to answer some fundamental questions necessruy for future prediction was often bewildering because the infonnation available was chaotic in organization, distribution and similarity. Often basic knowledge was unavailable, and if it was available it often was neither easily accessible nor in an usable form. If "adaptive" management will be the guide for ecosystem management, it should be based on knowledge derived from research (preferably experiments). Ecosystem management also implies that management will occur in a spatially explicit environment. The U. S. Forest Service, which manages the majority of owl habitat and which will selVe as a primary initiator of new forestry initiatives (Kessler et al. 1993), does not have a physical infrastructure and centralized philosophy to accomplish ecosystem management, if I am to judge from my experience working on the owl teams. I do not intend to criticize individuals who wOlk in the U.S. Forest SelVice. Rather, I am stating a fact about the structure of the organization Record keeping and retrieval are not spatially explicit or consistent throughout the SeIVice. This will inhibit future planning, monitoring, and adaptation to a spatially explicit philosophy of landscape or ecosystem management. The following actions would help rectify this problem within the U.S. Forest SeIVice. First, a substantial amount of time should be spent on developing an infrastructure to meet the needs of the organization (primary objectives being the acquisition of an agency consistent, spatially explicit Geographic Infonnation System, a data base system, and baseline resource reference system It would be effective to acquire a system that will be accessible to non-agency resource managers and scientists. Second, those who are statespersons of change in ecosystem management or other large scale initiatives should spend as much time advocating the development of infrastructure and science as a process as they do articulating philosophy. I selVe on the boards of The Nature ConselVancy and Tall Timbers Research Station and I have found that it is much easier to sell an idea than a reality. The reality of an infrastructure to support ecosystem management will be more expensive to achieve than the acceptance of new policy. Third, a balance needs to be found between individual initiative and creativity (Le., maintaining the ability of national forests and districts to respond to local conditions) and consistency of record keeping (i.e., a centralized and internally consistent management system). Fourth, a philosophy of science can be introduced to new forestIy initiatives by considering every action that affects the environment as a test of a hypothesis with a set of predictions and a course of monitoring. expose their own uncertainty even when subjected to professional as well as public criticism has resulted in their being viewed with favorable public and judicial sentiment. The expression of uncertainty is viewed as honesty and humility by the general public. It is also necessary for scientific advancement. The public image of forestry and foresters, unfortunately, has suffered as a result of the controversy surrounding the spotted owl. One only has to recount mass media advertisement campaigns, which attempted to project a positive forestry image, as evidence of an unfavorable public image. On the other hand, wildlife biologists/managers suffer from being one of the few fields in which the lay person thinks he or she knows more than the professionals. This issue of trust is not tri.vial because the success of new forestry initiatives must be executed in an open and honest mrumer with the sustainability of resources clearly the primary objective. I wony about these new initiatives because I already hear grumbling that it is euphemism for another round of resource exploitation • My comments should not be construed to be forester bashing but rather to point to a starting place where this destructive cycle of mistrust and non~ooperation can be broken Educators of foresters and wildlifers, myself included, have not done enough to bridge the disciplinary gap. Indeed, competition and antagonism is prevalent, if not encouraged by some faculty, among students toward their sister profession This is not only counter productive but unprofessional. The rift between disciplines can best be bridged by young minds who still have not been exposed to the prejudicial legacy that we have built for them I also believe that forestIy, at least as practiced on public lands, should be governed under an ecological rather than an agricultural paradigm New forest management initiatives imply a shift from an agricultural to an ecological paradigm This may necessitate fundamental changes in the foundation of forestry school curricula DISCUSSION Relevance of Spotted Owls to Ecosystem Management Knowledge about spotted owls, and about other species (including plants), is gained from extensive and intensive research. This information can be the foundation for models to explore future scenarios in resource management. The call for changing forest management and policy is an event that ecologists welcome. Yet despite the eloquent rhetoric about new initiatives in forest management (Kessler et al. 1992, Swanson and Franklin 1992, Franklin 1993), the success of these initiatives will depend upon knowledge and action, not words and policy directives. 56 TIle spotted owl helped change the way we view forests as well as resource and habitat sustainability. The process of science followed by spotted owl scientists and the acquisition of knowledge about the bird that supported management plans selVed as a model for endangered species conselVation and, one hopes, for more comprehensive forest management strategies. In my view, rather than the owl being a roadblock to management, it selVed as a stepping stone to progress. Whether science as a process will continue to be a major influence on conselVation decisions or whether the political considerations will supersede science will be a test of the importance of science to society. . Anthony, Robert; Williams, Thomas; Bart, Jonathan; Bruce, Charlie; Boula, Kathryn; Elmore, Wayne; Fay, John; Holthausen, Richard; Knowles, Donald; Stalkey, Edward; Rodrick, Betty. 1993. Consideration of other species and ecosystem concerns, Appendix D in: U.S. Department of the Interior, Draft recovety plan for the northern spotted owl. Barrowclough, George, F.; Sadie L. Coats. 1985. The demography and population genetics of owls with special reference to the conselVation of the spotted owl (Strix occidentalis). Pages 74-85 in: Gutierrez, R. 1., and Andrew B. Carey, eds. Ecology and management of the spotted owl in the Pacific Northwest. General Technical Report PNW-185. Portland, OR; U. S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station Bart, Jonathan; Earnst, Susan 1993. Suitable habitat for northern spotted owls: an update. Appendix B in: U.S. Department of the Interior, Draft recovety plan for the northern spotted owl. Boyce, Mark S. 1987. A Review of the U.S. Forest SelVice's viability analysis for the spotted owl. ColValliS, OR: National Council of the Paper Industry for Air and Stream Improvement, Inc. 50 p. Clements, F.E. 1916. Plant succession: Analysis of the development of vegetation Carnegie Institute of Washington Publication, No. 242. Washington D.C. 16.3.3, 16.4.5. Craig, George A. 1986. The spotted owl and wise forest use. Western Timber Association, Sacramento, CA. 69 p. Dru:ty, W. H.; I. C. T. Nisbet. 1973. Succession Journal Arnold AIboretum, Harvard University. 54:331-368. Forsman, Eric D.; Meslow, E. Charles; Wight, Howard M. 1984. Distribution and biology of the spotted owl in Oregon Wildlife Monographs. 87:1-64. Franklin, Ian Robert. 1980. Evolutionaty change in small populations; pages 135-149 in: Soule, Michael E.; Wilcox, Bruce A. eds. Conservation biology: An evolutionatyecological perspective. Sinauer Associates, Inc., Sunderland, Massachusetts. Franklin, Jefty F. 1993. Preserving Biodiversity: species, ecosystems or landscapes. Ecological Applications 3 :202-205. Gleason, H.A. 1926. The individualistic concept of the plant association. Torrey Botanical Chili Bulletin 53:7-26. Gore, AI. 1992. Earth in the balance: ecology and the human spirit. Houghton Mifi1in Company, New York. 408 p. Gutierrez, R. 1. 1993a. Natural histoty of the northern spotted owl. Pages 15-36 in U.S.DJ. Recovety plan for the northern spotted owl: final draft. U. S. Department of Interior, Fish and Wildlife Service. Portland, Oregon. Gutierrez R.I. 1993b. Changes in the distribution and abundance of spotted owl in the past centUlY. in Jehl, Joseph; Ned K. Johnson eds. Studies in Avian Biology (In Press). Johnson, K.N.; Franklin, Jefty, F; Thomas, Jack Ward; Gordon, 1. 1991. Alternatives for management of late-successional forests of the Pacific Northwest: a report of the Scientific Panel on Late-successional Forest Ecosystems to the U.S. House of Representatives. ACKNOWLEDGMENTS 1. Dunk, A. Franklin, and D~ Simberloff reviewed the manuscript. My colleagues on the northern spotted owl recovety team and the California spotted owl technical assessment team devoted thousands of hours to their respective groups with little recognition In particular, I thank, R. Anthony, 1. Bart, T. Beck, G. Gould, R. Holthausen, K. McKelvey, B. Noon, E. Starkey, 1. Verner for teaching me so much about the process and integrity of science. The following organizations provided fmancial support to spotted owl projects at Humboldt State University in the past year: U. S. Forest Service (pSW-92-0021CA); California Department of Fish and Game (FGI510); Bureau of Land Management (8950-A2-0028); Rocky Mountain Forest and Range Experiment Station (53-82Ff-l-04); U. S. Fish and Wildlife Service (RWOI4-16-OOO9-1547 no.28); and Southern California Edison Corporation Despite occasional differences of opinion and disagreements, the line staff and administrators with whom my students, colleagues, and I have wolked over the past 14 years have been extremely helpful to our research efforts. In addition, I never have had Forest Service administrators or wildlife scientists tty to suppress or change the results of our research. Thus, I wish to acknowledge this academic freedom and to thank the multitude of agency scientists and staff who are ttying to expand their role and that of their agency to meet the demands of 21st centmy resource management. LITERATURE CITED Anonymous. 1991. A facade of science: an analysis of the Jack Ward Thomas report based on sworn testimony of members of the Thomas committee. A report for the Association of 0 & C counties and the Northwest Forest Resource Council. Preston Thorgimson Shidler Gates & Ellis, Portland, Oregon 24 p. 57 management considerations for species associated with late-successional and old-growth forests of the Pacific Northwest. Report of the Scientific Analysis Team. U.S. Department of Agriculture, Forest SelVice. Port:land, OR. 530 p. Thomas, Jack Ward; Jared Verner. 1992. Accommodation with socio-economic factors under the Endangered Species Act more than meets the eye. Transactions of the North American Wildlife and Natural Resources Conference 57:627-641. U.S. Department of Agriculture, Forest SelVice. 1988. Final supplement to the environmental impact statement for an amendment to the Pacific Northwest regional guide. Port:land, OR 2 Vols. U.S. Department of Agriculture, Forest SelVice. 1991. Draft environmental impact statement on management for the northern spotted owl in the national forests. Portland, OR. 366 p. U.S. Department of Agriculture, Forest SeIVice. 1992. Final environmental impact statement on management for the northern spotted owl in the national forests. Portland, OR. 854 p. U.S. Department of the Interior, Fish and Wildlife SelVice. 1990. Endangered and threatened wildlife and plants; detennination of threatened status for the northern spotted owl. Washington, D.C.: Federal Register 55:266114-26194.. U.S. Department of the Interior, Fish and Wildlife Service. 1993a. Recovety plan for the northern spotted owl: fInal draft. Portland, Oregon 322 p. U.S. Department of the Interior, Fish and Wildlife Service. 1993b. Endangered and threatened wildlife and plants; detennination of threatened status for the Mexican spotted owl. Washington, D. C.: Federal Register. Verner, Jared; McKelvey, Kevin S.; Noon, Bany R.; Gutierrez R.J.; Gould, Gordon I. Jr.; Beck, Thomas, W. 1992. Assessment of the current status of the California spotted owl, with recommendations for management. Pages 3-26 in: Verner, Jared; McKelvey, Kevin S.; Noon, Barry R.; Gutierrez, RJ.; Gould, Gordon I. Jr.; Beck, Thomas W. tech. coords. The California spotted owl: a technical assessment of its current status. Gen Tech. Rep. PSW-G1R-133. Albany, CA: Pacific Southwest Research Station, U.S. Department of Agriculture, Forest SeIVice. 285 p. Wilcove, David S.; McMillan, Margaret; Winston, Keith c. 1993. What exactly is an endangered species? An analysis of the U.S. endangered species list:1985-1991. ConselVation Biology 7:87-93. Kessler, Winifred B.; Salwasser, Hal; Cartwright, Charles W. Jr.; Caplan, James A. 1992. New perspectives for sustainable natural resources management. Ecological Applications 2:221-225. Marcot, Bruce, G.; Holthausen, Richard. 1987. Analyzing population viability of the spotted owl in the Pacific Northwest. Pages 333-347 in: Transactions of the North American Wildlife Natural Resources Conference. Maser, Chris. 1988. The redesigned forest. R.& E. Miles, San Pedro, CA. 234 p. Murphy, Dennis D.; Noon, Barry R. 1991. Coping with uncertainty in wildlife bIology. Journal of Wildlife Management 55 :773-782. Mwphy, Dennis D.; Noon, Barty R. 1992. Integrating scientific methods with habitat conservation planning: reselVe design for northern spotted owls. Ecological Applications 2(1):3-17. Shaffer, MaIk. 1987. Minimum viable populations: coping with uncertainty. Pages 69-86 in~ Soule, Michael E. ed. Viable populations for COnselVatiOfl. Cambridge University Press, Cambridge, England. 189 p. Simberloff, Daniel. 1989. Book review of: Craig, George A.; The spotted owl and wise forest use. Western Timber Association, Sacramento, CA. 69 p. Condor 91:496-500. Soule, Michael E.; Wilcox, Bruce A. 1980. eds. ConselVation biology: An evolutionary-ecological perspective. Sinauer Associates, Inc., Sunderland Massachusetts. 395 p. SOWS (Spotted Owl Study Subgroup). 1991. A multi-resource strategy for conselVation of the northern spotted owl. Washington, D.C.; National Forest Products Association and American Forestry Council, Spotted Owl Subgroup. 45 p. Swanson, F.l; Franklin, IF. 1992. New forestry principles from ecosystem analysis of pacific northwest forests. Ecological Applications 2:262-274. Thomas, Jack Ward; Forsman, Eric D.; Lint, Joseph B.; Meslow, E. Charles; Noon, Bany R.; Verner, Jared. 1990. A conselVation strategy for the northern spotted owl: a report of the Interagency Scientific Committee to address the conselVation of the northern spotted owl. Portland, OR; U.S. Department of Agriculture, Forest SeIVice; U.S. Department of the Interior, Bureau of Land Management, Fish and Wildlife Service, and National PaIk SeIVice. 427p. Thomas, Jack Ward; Raphael, Martin G.; Anthony, Robert G.; Forsman, Eric D.; Gunderson, A. Grant; Holthausen, Richard S.; Marcot, Bruce G.; Reeves, Gordon H.; Sedell, James R.; Solis, David M.. 1993. Viability assessments and I 58 •