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Avifauna and biogeographical affinities of a carrasco-dominated landscape in north-eastern Brazil: providing baseline data for future monitoring
Bird Conservation International ( IF 1.6 ) Pub Date : 2021-04-15 , DOI: 10.1017/s0959270921000101
HEVANA SANTANA DE LIMA , FLOR MARIA GUEDES LAS-CASAS , JONATHAN RAMOS RIBEIRO , WEBER ANDRADE GIRÃO , DANIELE MARIZ , LUCIANO N. NAKA

The carrasco is a dense, shrubby vegetation type that covers the higher parts of table-top mountains in north-eastern Brazil. The vegetation of this phytophysiognomy is often considered to have biogeographical and ecological affinities with the cerrado of Central Brazil, but the biogeographical affinities of its avifauna remain unclear. In recent years, deforestation due to local economic activities has been particularly severe in some carrasco-dominated landscapes. In 2013, we initiated avian surveys at the Fazenda Pau D‘Arco, a privately owned property located on top of the Araripe Plateau, to evaluate the effects of a legal forest management program on the avifauna. Here, we present the results of four years of avian inventories to: i) characterize a well-preserved patch of carrasco vegetation; ii) assess avian biogeographical affinities of this vegetation type; iii) identify associations between managed/unmanaged areas and bird species; and iv) provide baseline data for future avian monitoring studies. Using different survey methods, we provide a list of 148 bird species, including several dry-forest specialists and caatinga endemics. Biogeographically, the avifauna of the carrasco represents a subsample of the Caatinga dry forest, lacking cerrado elements. Forest management significantly affected the distribution of several bird species in the study area. We found that 1/5 of the species (24) recorded during our standardized surveys were significantly associated with either unmanaged (14 species) or managed (10 species) areas. Species such as the Ceará Leaftosser Sclerurus cearensis, a globally vulnerable species, have only been detected in non-managed areas and therefore can be negatively affected by the management program. We also present data on 16 avian taxa with ecological and conservation concerns. By presenting a fairly complete and documented list of the avifauna, we characterize the carrasco avifauna and offer the tools to evaluate the effects of forest management on this poorly known vegetation type.



中文翻译:

巴西东北部以卡拉斯科为主的景观的鸟类和生物地理亲缘关系:为未来监测提供基线数据

卡拉斯科是一种茂密的灌木植被类型,覆盖巴西东北部桌面山脉的较高部分。这种植物地貌的植被通常被认为与巴西中部的塞拉多具有生物地理和生态亲和力,但其鸟类动物的生物地理亲和力仍不清楚。近年来,由于当地经济活动导致的森林砍伐在一些卡拉斯科地区尤为严重- 主导的景观。2013 年,我们在位于阿拉里佩高原顶部的私有财产 Fazenda Pau D'Arco 开展了鸟类调查,以评估合法森林管理计划对鸟类的影响。在这里,我们展示了四年鸟类清单的结果,以:i)描述保存完好的卡拉斯科植被斑块;ii) 评估这种植被类型的鸟类生物地理亲和性;iii) 确定管理/非管理区域与鸟类之间的关联;iv) 为未来的鸟类监测研究提供基线数据。使用不同的调查方法,我们提供了 148 种鸟类的清单,其中包括一些干旱森林专家和卡廷加特有物种。在生物地理学上,卡拉斯科的鸟类代表Caatinga干燥森林的子样本,缺少cerrado元素。森林管理显着影响了研究区几种鸟类的分布。我们发现,在我们的标准化调查期间记录的 1/5 物种(24 个)与非管理(14 个物种)或管理(10 个物种)区域显着相关。Ceará Leaftosser Sclerurus cearensis等物种是一种全球脆弱物种,仅在非管理区域发现,因此可能受到管理计划的负面影响。我们还提供了 16 种具有生态和保护问题的鸟类分类群的数据。通过提供一份相当完整且记录在案的鸟类列表,我们描述了卡拉斯科avifauna 并提供工具来评估森林管理对这种鲜为人知的植被类型的影响。

更新日期:2021-04-15
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