National values for regional aquatic species at risk in Canada
National values for regional aquatic species at risk in Canada
复制标题
DOI：
10.3354/esr00160
复制
发表时间：
2009-01-01
影响因子：
3.1
通讯作者：
Rudd, Murray A.
中科院分区：
文献类型：
--
作者：
Rudd, Murray A.
本分析的目的是评估根据《加拿大濒危物种法》列入或正在考虑列入濒危物种的6种区域水生物种的地理范围和非市场价值的大小。我使用潜在类分析来划分一项全国性的基于互联网的调查的回应，该调查向受访者询问他们喜欢的保护计划，这些计划根据目标物种（大西洋鲑鱼Salmo salar，大西洋白鱼Coregonus huntsmani，棱皮龟Dermochelys coriacea，北大西洋露脊鲸Eubalaena glacialis，鼠鲨Lamna nasus和白鲟acpenser transmontanus），计划绩效，成本，付款方式。加拿大公众的大样本（n = 2761）被分成9个不同的群体，他们的偏好模式差异很大。使用回归系数计算的平均隐含价格最高可达每年85.99加元。尽管种群数量的增加和上市状态的改善仅对9个细分市场中的4个具有重要意义，但对具有高成功概率的计划仍有强有力的支持。我还发现有证据表明，1段的成员不愿意或不能在节目属性之间做出权衡（即他们表现出“词典-图形偏好”）。来自所有9个部门的成员分布在加拿大各地，这意味着利益评估的适当地理范围应扩大到实际存在危险的区域水生物种的区域之外。这些发现应该有助于确保在加拿大未来制定濒危物种名单和投资决策时，能够捕捉到保护的广泛社会效益。
The goal of the present analysis was to assess the geographic scope and magnitude of non-market values for 6 regional aquatic species listed, or being considered for listing, as endangered under the Canadian Species at Risk Act. I used latent class analysis to partition responses from a national Internet-based survey that asked respondents about their preferred conservation program from amongst scenarios that varied according to target species (Atlantic salmon Salmo salar, Atlantic whitefish Coregonus huntsmani, leatherback turtle Dermochelys coriacea, North Atlantic right whale Eubalaena glacialis, porbeagle shark Lamna nasus, and white sturgeon Acipenser transmontanus), program performance, cost, and method of payment. The large sample of the Canadian public (n = 2761) cleaved into 9 distinct segments that varied significantly in their patterns of preferences. Mean implicit prices, calculated using regression coefficients, ranged as high as CAD $85.99 annually for Atlantic salmon Salmo salar. There was strong support for programs that had a high probability of success even though increases in population abundance and improvements in listing status were each only significant for 4 of the 9 segments. I also found evidence that members of 1 segment were unwilling or unable to make tradeoffs between the program attributes (i.e. they exhibited 'lexico-graphic preferences'). Members from all 9 segments were distributed across Canada, implying that the proper geographic scope of benefits assessments should be expanded beyond the regions in which regional aquatic species at risk actually occur. These findings should help ensure that the broad societal benefits of conservation are captured when making endangered species listing and investment decisions in Canada in the future.