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首页> 外文期刊>Journal of arid environments >The effects of habitat variables and land use on breeding birds in remnant wetland strips in an arid, rural landscape
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The effects of habitat variables and land use on breeding birds in remnant wetland strips in an arid, rural landscape

机译：栖息地变量和土地利用对干旱乡村景观中剩余湿地带中繁殖鸟类的影响

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摘要

The Jordan Valley exemplifies the pressure of multiple human actions including intensive livestock grazing and agriculture on bird diversity. The abundances and occurrence of breeding birds were studied along remnant perennial streams which flow into the River Jordan. A patch - landscape approach was used to study the influences of vegetation cover and disturbances at the local and landscape scales. For 21 species, Principal Component Analysis was used to reveal the importance of each spatial scale and relationships with habitat variables were modeled, The abundances and occurrences of 57% of the species were predicted by local habitat variables only, while most others were apparently influenced by a mixture of habitat and landscape factors. Birds with restricted distribution were associated with less degraded wetland habitat strips with heterogeneous vegetation including reed beds and inundated Tamarix thickets. Some species were negatively influenced by intensive grazing and the spread of invasive mesquite Prosopis juliflora. Most species appeared to be tolerant to low levels of grazing within the habitat and current land use in the surrounding landscape. Based on the results, we emphasize the importance of protecting and managing remnant strips or patches of natural and semi-natural wetland habitats in the Jordan Valley.
机译：约旦河谷体现了多种人类行动的压力，包括集约化放牧和农业对鸟类多样性的压力。沿流入约旦河的多年生残余河流研究了繁殖鸟类的数量和数量。补丁-景观方法用于研究植被覆盖和干扰在局部和景观尺度上的影响。对于21个物种，使用主成分分析揭示了每个空间尺度的重要性，并模拟了与栖息地变量的关系。仅通过当地栖息地变量预测了57％物种的丰度和发生，而大多数其他物种显然受到了影响。栖息地和景观因素的混合体。分布受限的鸟类与退化程度较低的湿地栖息地带相关，这些植被带包括芦苇床和淹没的柳柳灌木丛在内的异质植被。一些物种受到密集放牧和豆科灌木豆腐的扩散的不利影响。大多数物种似乎对栖息地内的低度放牧和周围景观中目前的土地利用具有宽容的能力。根据结果​​，我们强调保护和管理约旦河谷天然和半天然湿地栖息地的残余地带或斑块的重要性。

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