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首页> 外文学位 >Mainland and Island Kelp Forests in Northern Baja California, Mexico: Subtidal Community Structure, Dynamics, and Connectivity for the Design of Marine Protected Areas.
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Mainland and Island Kelp Forests in Northern Baja California, Mexico: Subtidal Community Structure, Dynamics, and Connectivity for the Design of Marine Protected Areas.

机译：墨西哥北下加利福尼亚州的大陆和岛屿海带森林：潮汐带的群落结构，动力学和海洋保护区设计的连通性。

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摘要

The coasts of northwestern Baja California, MEX, are classified as "Marine Priority Zone I" (MPZI) for conservation of biodiversity in Mexico, and their long-term conservation will require maintaining species diversity, habitat quality, and ecological processes as conservation targets. For my dissertation, I examined patterns of spatial and temporal variability in benthic communities from mainland Macrocystis pyrifera kelp forests, and assessed patterns of genetic diversity and connectivity among mainland and island kelp forests in the MPZI. In the first chapter, I examined spatial and short-term temporal changes in benthic community composition from a USA-MEX transboundary group of kelp forests. The benthic communities were similar, but not identical among sites, and temporal changes in species abundances were not consistent across all sites. Further, I observed a significant relationship between substratum rugosity and species richness, and consequently suggest an index of substratum rugosity can serve as a useful surrogate for biological diversity. Next, I investigated the patterns of connectivity among mainland and island kelp forests from the entire MPZI by assessing patterns of genetic diversity for populations of two invertebrate species with different pelagic larval durations. This produced consistent evidence to support a spatial north-south genetic subdivision predicted by persistent oceanographic surface currents. Finally, I explored similarities in community structure within and among kelp forest communities across the entire MPZI, which revealed a north-south differentiation in benthic communities. This also confirmed the relationship between substratum rugosity and species richness, and supported using rugosity as a surrogate for species richness in the MPZI region. Based on these findings, I recommend classifying mainland and island forest habitats as conservation sites from the north and south MPZI regions, and further prioritize site selection in accordance with species richness and connectivity for the future design of conservation networks along the northwestern coasts of Baja California, Mexico.
机译：墨西哥下加利福尼亚西北部的沿海地区被列为“海洋优先区I”（MPZI），以保护墨西哥的生物多样性，其长期保护将需要保持物种多样性，栖息地质量和生态过程作为保护目标。在我的论文中，我研究了大陆Macrocystis pyrifera海带森林底栖群落的时空变化模式，并评估了MPZI大陆和岛屿海带森林之间的遗传多样性和连通性模式。在第一章中，我研究了美国-MEX海带森林跨境群底栖动物群落的空间和短期时间变化。底栖生物群落相似，但不同地点之间并不完全相同，物种丰富度的时间变化在所有地点之间均不一致。此外，我观察到基质的皱纹度与物种丰富度之间存在显着的关系，因此，提出了基质的皱纹度指标可以作为生物多样性的有用替代指标。接下来，我通过评估两个具有不同上层幼体持续时间的无脊椎动物物种的种群遗传多样性模式，研究了整个MPZI中大陆和岛屿海带森林之间的连通性模式。这产生了一致的证据来支持由持续的海洋表面流预测的空间南北遗传细分。最后，我探索了整个MPZI海带森林群落内部和之间的群落结构相似性，揭示了底栖生物群落的南北分化。这也证实了基质皱纹度与物种丰富度之间的关系，并支持使用皱纹度作为MPZI地区物种丰富度的替代物。基于这些发现，我建议将内陆和岛屿森林栖息地归类为MPZI北部和南部的保护区，并根据物种的丰富程度和连通性进一步优先选择地点，以用于未来在下加利福尼亚州西北海岸的保护网络设计，墨西哥。

著录项

  • 作者

    Torres Moye, Guillermo.;

  • 作者单位

    University of California, Davis.;

  • 授予单位 University of California, Davis.;
  • 学科 Biology Ecology.;Agriculture Fisheries and Aquaculture.;Biology Conservation.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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