Abstract
Protected areas are considered essential elements for global biodiversity conservation. They may not necessarily result in an effective conservation of resources in developing countries due to lack of funding for management and enforcement. In addition, poor governance aligned with conflicts of economic interests related to their use can further threaten their integrity and persistence. In the Dominican Republic, the western beaches of the Jaragua National Park (JNP), a protected area which is also part of a UNESCO Biosphere Reserve, have been proposed for development using a mass-tourism model. One of the most charismatic species found in this area is the leatherback turtle (Dermochelys coriacea). In the present study, we assess hatching success, and factors affecting it, to determine the reproductive value across the area for the leatherback turtle. The main factors found driving hatching success at the study beaches are beach sector, incubation duration, date of lay and clutch size. Our results show that clutches in La Cueva (located in the buffer zone of the park) and Bahía de las águilas (located inside the limits of the park) have an unusually high hatching success (~75 %) for this species, highlighting the importance of increasing protection efforts at these sites. We strongly recommend including La Cueva inside the limits of the JNP.
保护工作者广泛认同的最佳保护策略将最大限度地在目标类群保留遗传变异的数量,但怎么说变化应通过恢复和缓解活动派发正在进行的辩论。在这里,我们评估10年缓解对Limnanthes vinculans的群体遗传结构的?的影响,一个国家,仅限于在加利福尼亚州的圣罗莎平原短暂的春天池湿地联邦政府上市的濒危植物物种。利用微卫星位点来估算中性分子的变化规律,我们发现,创建池支持的变化在L vinculans作为天然泳池相似的水平。人居创建和种子易位没有打乱整个物种范围人口结构的最大规模的模式,但对缓解该范围的中心活动的集中度有所降低的隔离逐距离是在这个地区经营的程度和转移的位置至少一种基因的边界。在剩下的春分池种群间的遗传变异图谱显示,基因流历史上发生了超越个人池的规模在物种范围的中心,而小种群的遗传分化已经围绕的范围内边距。平均而言,属vinculans在创建池表现出较少的盖子,比残池更受限制的地区分布,但这些图案是由两位特别富有成效的自然遗产,而不是自然,创造了站点之间的一致的差异所致。我们的结论是缓解活动已经改变了物种内的基因流历史模式的范围为中等程度,这些变化将通过基因流可能带来的影响残余池,以及目前建立的网站提供较少的异质生境属vinculans不是做自然池。研究,跟踪单个工厂将需要确定是否在变化,由于减缓基因流将不会对属vinculans的人口和微进化轨迹正面或负面的影响。更一般地,这项研究提供了通过强化管理减排的濒危植物物种的结果进行回顾性分析,并得出几点启示,以便为将来的保护策略。