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1.
Frank Merry Britaldo Soares-Filho Daniel Nepstad Gregory Amacher Hermann Rodrigues 《Environmental management》2009,44(3):395-407
Logging has been a much maligned feature of frontier development in the Amazon. Most discussions ignore the fact that logging
can be part of a renewable, environmentally benign, and broadly equitable economic activity in these remote places. We estimate
there to be some 4.5 ± 1.35 billion m3 of commercial timber volume in the Brazilian Amazon today, of which 1.2 billion m3 is currently profitable to harvest, with a total potential stumpage value of $15.4 billion. A successful forest sector in
the Brazilian Amazon will integrate timber harvesting on private lands and on unprotected and unsettled government lands with
timber concessions on public lands. If a legal, productive, timber industry can be established outside of protected areas,
it will deliver environmental benefits in synergy with those provided by the region’s network of protected areas, the latter
of which we estimate to have an opportunity cost from lost timber revenues of $2.3 billion over 30 years. Indeed, on all land
accessible to harvesting, the timber industry could produce an average of more than 16 million m3 per year over a 30-year harvest cycle—entirely outside of current protected areas—providing $4.8 billion in returns to landowners
and generating $1.8 billion in sawnwood sales tax revenue. This level of harvest could be profitably complemented with an
additional 10% from logging concessions on National Forests. This advance, however, should be realized only through widespread
adoption of reduced impact logging techniques. 相似文献
2.
Marine protected areas are not established in an institutional and governance vacuum and managers should pay attention to the wider social–ecological system in which they are immersed. This article examines Islas Choros-Damas Marine Reserve, a small marine protected area located in a highly productive and biologically diverse coastal marine ecosystem in northern Chile, and the interactions between human, institutional, and ecological dimensions beyond those existing within its boundaries. Through documents analysis, surveys, and interviews, we described marine reserve implementation (governing system) and the social and natural ecosystem-to-be-governed. We analyzed the interactions and the connections between the marine reserve and other spatially explicit conservation and/or management measures existing in the area and influencing management outcomes and governance. A top-down approach with poor stakeholder involvement characterized the implementation process. The marine reserve is highly connected with other spatially explicit measures and with a wider social–ecological system through various ecological processes and socio-economic interactions. Current institutional interactions with positive effects on the management and governance are scarce, although several potential interactions may be developed. For the study area, any management action must recognize interferences from outside conditions and consider some of them (e.g., ecotourism management) as cross-cutting actions for the entire social–ecological system. We consider that institutional interactions and the development of social networks are opportunities to any collective effort aiming to improve governance of Islas Choros-Damas marine reserve. Communication of connections and interactions between marine protected areas and the wider social–ecological system (as described in this study) is proposed as a strategy to improve stakeholder participation in Chilean marine protected areas. 相似文献
3.
Anthony Preen 《Environmental management》1998,22(2):173-181
/ The coastal zone of the Indian Ocean is coming under increasing pressure from human activities. Australia may be one of the few countries in this region that can afford to take adequate conservation measures in the near future. As it also has one of the longest Indian Ocean coastlines, Australia has the opportunity, and responsibility, to make a meaningful contribution to the conservation of Indian Ocean biodiversity. Threatened species, including marine turtles, inshore dolphins, and dugongs are an important component of that biodiversity. The dugong has been exterminated from several areas in the Indian Ocean, and it appears to be particularly threatened by mesh netting andhunting. Its long-term survival may depend on adequate protection in Australia, which contains the largest known Indian Ocean populations. This protection will require, in part, an appropriate system of marine protected areas (MPAs). This paper examines the adequacy of MPAs along Australia's Indian Ocean coast. Dugongs occur in two MPAs in Western Australia. The proposed expansion of the system of marine reserves is based primarily on representative samples of ecosystems from each biogeographic region. It is inadequate because it does not take into account the distribution and relative abundance of threatened species. If the conservation of biodiversity is to be maximized, the system of MPAs should incorporate both representativeness and the needs of threatened species. The level of protection provided by MPAs in Western Australia is low. Under current government policy potentially damaging activities, including commercial fishing, seismic surveys, and oil and gas drilling are permitted in protected areas.KEY WORDS: Marine protected areas; Dugongs; Western Australia; Indian Ocean; Conservation; Biodiversity 相似文献
4.
Available information on the socioeconomic implications of marine protected areas (MPAs) for the socioculturally diverse Mediterranean
region is scant. The National Marine Park of Alonissos, Northern Sporades (NMPANS), Greece was established in 1992 as a foundation
for the conservation of the endangered Mediterranean monk seal Monachus monachus. The evolution of the degree of acceptance of and satisfaction from the NMPANS by involved stakeholder groups (fishermen,
tourism operators, hoteliers and owners of rooms to let, governmental bodies, nongovernmental bodies, students, domestic and
foreign tourists) were investigated 13 years after its establishment using written questionnaires delivered during personal
interviews. The initial positive attitude of local professionals for the NMPANS has eroded due to the unsatisfactory fulfillment
of expectations for socioeconomic development. Fishermen expressed dissatisfaction with, mistrust toward, and a reluctancy
to communicate with the NMPANS’s management body. They believe that the fishery areas have decreased in actual geographic
area because of the prohibitive measures; fish stocks are declining; compensation for damage to fishery equipment by the Mediterranean
monk seal and for the prohibitive measures should be provided; and stricter enforcement of regulations should take place.
On the other hand, tourism operators, who organize trips for tourists to the NMPANS, unanimously reported direct economic
benefits. Furthermore, there was a disparity in the perception of socioeconomic benefits derived from the NMPANS between governmental
bodies and local stakeholders. The governmental bodies and the nongovernmental organization MOm-Hellenic Society for the Study
and Protection of the Monk Seal postulated that there had been considerable socioeconomic benefits for the local community
of Alonissos due to the establishment of the NMPANS, whereas the local nongovernmental organization Ecological and Cultural
Movement of Alonissos claimed benefits were scant. Tourists (domestic and foreign) believe that the NMPANS is not the main
attraction to Alonissos Island but is part of a composite, including serenity, aesthetic beauty, and small-scale tourism development,
which can turn Alonissos Island into an ideal eco-tourism destination; a common aspiration for both the tourists and the local
community by general consensus. The aim of the NMPANS to integrate conservation and development lies in (1) the effectiveness
of the NMPANS management body in formulating a strategic management plan that would accommodate stakeholders’ interests and
aspirations and (2) a national policy of conservation and enhancement of natural resources with consistency and continuity.
Quantitative assessment of the socioeconomic effectiveness of the Mediterranean MPAs using a common methodology would facilitate
the identification of intraregional variation and better planning for the network of MPAs in the Mediterranean. 相似文献
5.
Marine Protected Dramas: The Flaws of the Brazilian National System of Marine Protected Areas 总被引:1,自引:0,他引:1
Leopoldo C. Gerhardinger Eduardo A. S. Godoy Peter J. S. Jones Gilberto Sales Beatrice P. Ferreira 《Environmental management》2011,47(4):630-643
This article discusses the current problems and issues associated with the implementation of a National System of Marine Protected
Areas in Brazil. MPA managers and higher governmental level authorities were interviewed about their perceptions of the implementation
of a national MPA strategy and the recent changes in the institutional arrangement of government marine conservation agencies.
Interviewees’ narratives were generally pessimistic and the National System was perceived as weak, with few recognizable marine
conservation outcomes on the ground. The following major flaws were identified: poor inter-institutional coordination of coastal
and ocean governance; institutional crisis faced by the national government marine conservation agency; poor management within
individual MPAs; problems with regional networks of marine protected areas; an overly bureaucratic management and administrative
system; financial shortages creating structural problems and a disconnect between MPA policy and its delivery. Furthermore,
a lack of professional motivation and a pessimistic atmosphere was encountered during many interviews, a malaise which we
believe affects how the entire system is able to respond to crises. Our findings highlight the need for a better understanding
of the role of ‘leadership’ in the performance of socio-ecological systems (such as MPA networks), more effective official
evaluation mechanisms, more localized audits of (and reforms if necessary to) Brazil’s federal biodiversity conservation agency
(ICMBio), and the need for political measures to promote state leadership and support. Continuing to focus on the designation
of more MPAs whilst not fully addressing these issues will achieve little beyond fulfilling, on paper, Brazil’s international
marine biodiversity commitments. 相似文献
6.
Shawn W. Margles Richard B. Peterson Jamison Ervin Beth A. Kaplin 《Environmental management》2010,45(1):1-4
Interdisciplinary approaches to conservation research and environmental management continue to garner interest among practitioners, academics, and students. Yet, cases of practitioners and researchers from different disciplines successfully working in concert towards an integrated conservation approach are rare. What is preventing practitioners of multiple disciplines from harmoniously working together? Why are practitioners and academics struggling to apply their graduate training to real world conservation? What is preventing the benefits of cooperation and partnerships between different disciplines addressing conservation from being realized? This special issue “Conservation without Borders: Building Communication and Action across Disciplinary Boundaries for Effective Conservation” asks readers to consider the numerous interpretations and implications of the phrase “Conservation without Borders” and to reflect on how different academic and disciplinary lenses can contribute to a more integrated approach to tackling conservation challenges. The articles that comprise this special issue offer readers insights into the ways in which different disciplines view conservation work and interdisciplinary approaches to environmental problems. Bringing these perspectives and approaches together in one place is a step towards improving communication across disciplines for the purpose of achieving more successful biodiversity conservation. 相似文献
7.
Ruth L. Kamrowski Stephen G. Sutton Renae C. Tobin Mark Hamann 《Environmental management》2014,54(3):583-595
Artificial lighting along coastlines poses a significant threat to marine turtles due to the importance of light for their natural orientation at the nesting beach. Effective lighting management requires widespread support and participation, yet engaging the public with light reduction initiatives is difficult because benefits associated with artificial lighting are deeply entrenched within modern society. We present a case study from Queensland, Australia, where an active light-glow reduction campaign has been in place since 2008 to protect nesting turtles. Semi-structured questionnaires explored community beliefs about reducing light and evaluated the potential for using persuasive communication techniques based on the theory of planned behavior (TPB) to increase engagement with light reduction. Respondents (n = 352) had moderate to strong intentions to reduce light. TPB variables explained a significant proportion of variance in intention (multiple regression: R 2 = 0.54–0.69, P < 0.001), but adding a personal norm variable improved the model (R 2 = 0.73–0.79, P < 0.001). Significant differences in belief strength between campaign compliers and non-compliers suggest that targeting the beliefs reducing light leads to “increased protection of local turtles” (P < 0.01) and/or “benefits to the local economy” (P < 0.05), in combination with an appeal to personal norms, would produce the strongest persuasion potential for future communications. Selective legislation and commitment strategies may be further useful strategies to increase community light reduction. As artificial light continues to gain attention as a pollutant, our methods and findings will be of interest to anyone needing to manage public artificial lighting. 相似文献
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K. Bishop A. Phillips L. M. Warren 《Journal of Environmental Planning and Management》1997,40(1):81-110
This paper discusses the complexity of the protected area mosaic that has evolved in the United Kingdom over the past 40 or so years. Experimental matrices have been used to assist in the analysis of the various types of protected areas. The trend has been towards the development of protected areas to serve multiple objectives, although categories of protected area introduced under European legislation are more narrowly defined. There has been a proliferation in the number of categories of protected area in the past ten years; since 1990 six new categories of protected area have been established, two resulting from European directives. Most of the protected areas operate indirectly through the planning system and/or voluntary agreements. However, a distinction is drawn between systems for nature conservation and landscape protection with the former relying more on direct controls (ownership and/or legal force). There is considerable potential overlap of protected areas. New categories of protected area have often been superimposed upon the existing system without consideration of whether they will result in duplication of effort, expenditure etc. We conclude that there is scope for some rationalization of the system. Ideally this would involve replacing existing protected areas with broader based ones but considerable simplification could be obtained in practice by making the powers of the agencies more flexible and changing the administrative arrangements for managing the various protected areas. 相似文献
10.
William P. Tavoulareas 《Natural resources forum》1979,3(3):281-288
In this article, the first of a series of viewpoint pieces in Natural Resources Forum , the president of a major transnational energy corporation analyses the pivotal role of the United States in determining world energy trends and argues that development of nuclear energy and coal will be necessary to meet demand as world oil supplies dwindle in the 1990's. In the United States, the lack of a clear-cut government policy coupled with opposition to nuclear energy hampers the development of alternate energy sources for the future. This situation is mirrored in other parts of the world. Unless assessments of the long lead times for solar and nuclear fusion as sources of energy are accepted soon as realistic and unless efforts to develop nuclear and coal are accelerated, the United States may face grave energy shortfalls in the medium term. 相似文献
11.
Zak Le Roux 《The Environmentalist》1993,13(2):105-110
Summary The objectives, appropriate strategies, the state of conservation in South Africa, and the contributed research which is needed, are evaluated. It is suggested that the ultimate objectives of conservation are to maintain the ecosystem to support people and to achieve economic advantages. These can only be obtained by providing for the greatest possible diversity of life on Earth. An appropriate conservation strategy can be based on a balanced combination of five types of conservation opportunities. These opportunities are: (i) formal conservation in reserves, (ii) promotion of land use change for conservation, (iii) law enforcement, (iv) national resource utilisation planning, and (v) the development of a national land ethic. Adjustment of the opportunity combination to address changing threast must be an ongoing exercise. Conservation strategies need to be based on sound conceptual models of ecosystem structure and function, as well as human needs and aspirations. The main goals of the conservation ecologist are the development, testing and validation of conceptual models of ecosystems.Mr Zak Le Roux is employed in the Scientific Services Section of the Ecosystem Conservation Department of the Natal Parks Board. He possesses a BSc in Forestry and Nature Conservation from the University of Stellenbosch, and is currently undertaking research in Plant Ecology at the University of Natal. A tenth generation South African, his work focuses on vegetation dynamics of semi-arid savanna landscapes and general conservation in Zululand. In particular, this involves the integration of wildlife with agriculture, and the development of more appropriate land uses in the areas surrounding the parks. 相似文献
12.
Robert Marshall Catherine Smith 《Journal of Environmental Planning and Management》1999,42(5):691-706
This paper investigates the performance of district local authorities in their delivery of nature conservation in the 1990s, both through the land use planning system and in their wider operational functions. Studies conducted in the 1980s revealed a large gap in performance between the best and the worst performers.The last decade, however, has witnessed far reaching changes within local government as well as external influences which are likely to have affected the ability of local authorities to promote the conservation of nature. The research shows that performance has significantly improved in a number of the roles which local authorities exercise in relation to conservation. There still remains, however, a marked variation between the best performers and the remainder. 相似文献
13.
Prévot-Julliard AC Clavel J Teillac-Deschamps P Julliard R 《Environmental management》2011,47(3):315-321
To garner support for biodiversity from the World’s human population, conservation biologists need an open-minded, integrated
conservation strategy. We suggest that this strategy should include efforts to (1) preserve existing high quality, diverse
ecosystems, (2) remediate impaired systems, (3) balance the needs of people and ecological resources, and (4) engender appreciation
of nature and its services. We refer to these four key tenets as reservation, restoration, reconciliation, and reconnection.
We illustrate these concepts by presenting the debate surrounding the management of exotic species from an unusual perspective,
the benefits of exotic species. By this example we hope to encourage an integrated approach to conservation in which management
strategies can be flexible, adjusting to society’s needs and the overall goals of conservation. 相似文献
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人工湿地在污水处理中的应用及其展望 总被引:9,自引:0,他引:9
作为污水处理的有效途径,人工湿地具有众多的优点。本文分析了人工湿地的构造及去污机理,总结了人工湿地在污水处理中应用的历史及现状,并对其未来的应用前景做出了展望。 相似文献
18.
Decisionmakers are in the process of selecting remedial measures for controlling nonpoint pollution runoff. Conservation tillage (CT) is being looked to as one of the major recommended practices. Many different systems exist and vary in the amount of crop residue left and soil roughness produced. Therefore, varying results occur in terms of yield and potential water quality impacts. Differences vary with type of tillage system, soils, geographic region, and the farmer's management. The purpose of this review is to provide material to decisionmakers that points out the assets and liabilities of the various CT systems. Tillage effects on soil characteristics and plant growth are presented and include a discussion of soil moisture and temperature, weed and insect control, nutrient availability, and yields. Water quality aspects are addressed through a discussion of the effects CT systems have on sediment, water, pesticide, and phosphorus loss.This work was supported by the Soil Science Department, College of Agriculture and Life Sciences, University of Wisconsin-Madison, and the U.S. Environmental Protection Agency, Region V, Chicago, Illinois. (Grant No. G005139-01). 相似文献
19.
An alternative method of estimating relative demand among nonconsumptive uses of wildlife and among wildlife species is proposed. A demand intensity score (DIS), derived from the relative extent of an individual's involvement in outdoor recreation and conservation activities, is used as a weighting device to adjust the importance of preference rankings for wildlife uses and wildlife species relative to other members of a survey population. These adjusted preference rankings were considered to reflect relative demand levels (RDLs) for wildlife uses and for species by the survey population. This technique may be useful where it is not possible or desirable to estimate demand using traditional economic means. In one of the findings from a survey of municipal conservation commission members in Massachusetts, presented as an illustration of this methodology, poisonous snakes were ranked third in preference among five groups of reptiles. The relative demand level for poisonous snakes, however, was last among the five groups. 相似文献
20.
As conservation increases its emphasis on implementing change at landscape-level scales, multi-agency, cross-boundary, and multi-stakeholder networks become more important. These elements complicate traditional notions of learning. To investigate this further, we examined structures of learning in the Landscape Conservation Cooperatives (LCCs), which include the entire US and its territories, as well as parts of Canada, Mexico, and Caribbean and Pacific island states. We used semi-structured interviews, transcribed and analyzed using NVivo, as well as a charrette-style workshop to understand the difference between the original stated goals of individual LCCs and the values and purposes expressed as the collaboration matured. We suggest double-loop learning as a theoretical framework appropriate to landscape-scale conservation, recognizing that concerns about accountability are among the valid points of view that must be considered in multi-stakeholder collaborations. Methods from the social sciences and public health sectors provide insights on how such learning might be actualized. 相似文献