• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Conservation biology of caecilian amphibians
【24h】

Conservation biology of caecilian amphibians

机译：凯氏两栖动物的保护生物学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Most of the available data on declining populations of amphibians pertain to frogs and, to a lesser extent, salamanders. In keeping with their generally less understood biology, the population trends and conservation status of caecilian amphibians (Gymnophiona) are also much less known. We reviewed reports of threats to and declines of populations of caecilians. Despite a lack of field-study details (e. g., localities, dates, and sampling methods) and quantitative data, there are several recent reports of threats to and declines and extinctions of caecilians. A range of causal explanations (habitat loss, pollution, chytridiomycosis, and scientific collecting) for these perceived declines have been proposed but little or no associated evidence has been given. Although caecilians are often considered rare and thought to require pristine habitat, published, quantitative data demonstrate that at least some species can occur in high abundance in disturbed, synanthropic environments. Few estimates of caecilian population parameters have been made and very few field methods have been tested, so the assumed rarity of any taxa remains inadequately demonstrated. Distribution and taxonomic data are also inadequate. Because they are generally poorly known and often cryptic, caecilians can be overlooked in standard faunal surveys, meaning that lack of opportunistic collection over several years might not represent evidence of decline. The conservation status of most species must be considered data deficient. More precise assessments will require a substantial increase in all areas of caecilian research, especially those involving new fieldwork. Future reports of caecilian conservation biology need to be explicit and more quantitative.
机译：关于两栖动物数量下降的大多数可用数据与青蛙有关，在较小程度上与，有关。与其普遍缺乏了解的生物学相一致，凯氏两栖动物（Gymnophiona）的种群趋势和保护状况也鲜为人知。我们审查了对凯撒人威胁和数量下降的报道。尽管缺乏实地研究的细节（例如，地点，日期和取样方法）和定量数据，但是最近有几份关于对盲肠人的威胁以及其灭绝和灭绝的报道。对于这些可感知的下降，已经提出了一系列因果解释（栖息地丧失，污染，乳糜菌和科学收集），但很少或没有给出相关的证据。尽管凯撒犬通常被认为是稀有物种，并且认为它们需要原始栖息地，但已发表，但定量数据表明，在受干扰的合人类环境中，至少有一些物种可以大量繁殖。很少有人估计凯撒种群参数，很少对野外方法进行过测试，因此任何分类单元的稀有性都没有得到充分证明。分布和分类数据也不充分。由于凯撒人通常不为人所知，而且通常是神秘的，因此在标准动物调查中可以忽略它们，这意味着几年来缺乏机会性收集可能并不代表下降的迹象。大多数物种的保护状况必须被视为数据不足。更加精确的评估将需要在凯撒研究的所有领域，特别是那些涉及新野外工作的领域，大量增加。凯撒保护生物学的未来报告需要更加明确和定量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号