Impact of human disturbance on the abundance of non-breeding shorebirds in a subtropical wetland

Shorebird populations have declined due to several threats throughout their annual cycle. Anthropogenic disturbance is one of the most ubiquitous threats to shorebird conservation in North America. Here, we studied the influence of human disturbance on shorebird community dynamics during migration and winter in Ensenada de La Paz, a subtropical coastal wetland in Mexico. We used negative binomial generalized linear mixed models to investigate the associations between spatial, biological, and anthropogenic variation and local shorebird abundance that accounted for shorebird body size (small, medium, and large) and foraging strategy (visual and tactile) of 21 shorebird species. After controlling for these different correlates of abundance, human disturbance (people, vehicles, and dogs) was negatively associated with shorebird abundance. During winter, all shorebird species were negatively related to human disturbance but positively associated with presence of raptors. However, small, tact...滨鸟（Shorebird）种群在其全年生活周期内，因多重威胁因素出现数量下滑。人为干扰是北美地区滨鸟保护所面临的最为普遍的威胁之一。本研究以墨西哥亚热带滨海湿地拉巴斯湾（Ensenada de La Paz）为研究区域，探究了该区域内迁徙与越冬阶段，人为干扰对滨鸟群落动态的影响。研究采用负二项广义线性混合模型（negative binomial generalized linear mixed models），分析空间、生物学及人为因素的变异与当地滨鸟种群丰度之间的关联，同时控制了21种滨鸟的体型（划分为小型、中型与大型）与觅食策略（分为视觉型与触觉型）两类变量。在控制上述各类丰度关联因子后，结果显示人为干扰（包括行人、车辆与犬只）与滨鸟种群丰度呈显著负相关关系。越冬阶段，所有滨鸟物种均与人为干扰呈负相关，却与猛禽的存在呈正相关。然而，小型触觉觅食型滨鸟……