在俄克拉荷马州的个人树尺度上利用东部红杉的使用1 侵占区域
Olivia Horton1, Jozlyn Propst2, Scott R Loss1
1Department of Natural Resource Ecology and Management, Oklahoma State University, 320 Agricultural Hall, 311 North Monroe St., Stillwater, OK 74078.
概括
东部红杉 (ERC) 在大平原地区的侵占,为携带疾病的虫创造了息地. 即使是单独的ERC树木也会显著增加的数量,从而增加了载体传播疾病的风险.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 载体传播疾病生态学
背景情况:
- 大平原的草原正在经历生物群水平的转换,原因是东部红杉 (Juniperus virginiana L.; ERC) 的侵占.
- 欧洲研究中心的扩张改变了非生物和生物条件,为虫和蚊子等疾病载体创造了有利的息地.
- 这种转变增加了该地区载体传播疾病的风险.
研究的目的:
- 评估单个东方红杉树对树木层面的 abundance的影响.
- 为了比较ERC树下的种群与相邻草原地区的种群.
- 了解侵袭性ERC对载体传播疾病系统的微细生态影响.
主要方法:
- 在ERC的树下和附近的草中部署了二氧化碳陷.
- 在俄克拉荷马州中部和西部的七个地点进行了采样.
- 收集的被分为物种和生命阶段.
主要成果:
- 在研究期间,共收集了3,654只.
- 与草地相比,在ERC树下发现了显著更多的成年和的Amblyomma americanum (L.).
- 成人皮肤变异性 (Say) 也在ERC树下明显更丰富.
结论:
- 个别的东部红杉树提供了足够的息地,以增加关键的物种,Amblyomma americanum和Dermacentor variabilis的丰富性.
- 这一发现支持了更大规模的证据,表明ERC的侵占增加了种群.
- 即使是孤立的ERC树木也会对大平原的载体传播疾病系统的生态做出贡献.
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