Shaheed Benazir Bhutto University Sheringal Dir (Upper), Department of Forestry, Khyber Pakhtunkhwa, Pakistan.
Jouf University, College of Engineering, Department of Mechanical Engineering, Sakaka, Saudi Arabia.
Braz J Biol. 2022 Feb 4;84:e256160. doi: 10.1590/1519-6984.256160. eCollection 2022.
Riverine forests are unique and highly significant ecosystems that are globally important for diverse and threatened avian species. Apart from being a cradle of life, it also serves as a gene pool that harbors a variety of flora and fauna species (repeated below). Despite the fact, this fragile ecosystem harbored avian assemblages; it is now disappearing daily as a result of human activity. Determining habitat productivity using bird species is critical for conservation and better management in the future. Multiple surveys were conducted over a 15-month period, from January to March 2019, using the distance sampling point count method. A total of 250 point count stations were fixed systematically at 300 m intervals. In total, 9929 bird individuals were recorded, representing 57 species and 34 families. Out of 57 bird species, two were vulnerable, one was data deficient, one was nearly threatened, and the remaining 53 species were of least concern. The Eurasian Collard Dove - Streptopelia decaocto (14.641 ± 2.532/ha), White-eared Bulbul - Pycnonotus leucotis (13.398 ± 4.342/ha) and Common Babbler - Turdoides caudata (10.244 ± 2.345/ha) were the three first plenteous species having higher densities. However, the densities of three species, i.e., Lesser Whitethroat - Sylvia curruca, Gray Heron - Ardea cinerea and Pallas Fish Eagle - Haliaeetus leucoryphus, were not analyzed due to the small sample size. The findings of diversity indices revealed that riverine forest has harbored the diverse avian species that are uniformly dispersed across the forest. Moreover, recording the ten foraging guilds indicated that riverine forest is rich in food resources. In addition, the floristic structure importance value index results indicated that riverine forest is diverse and rich in flora, i.e. trees, shrubs, weeds and grass, making it an attractive and productive habitat for bird species.
河流林是独特且高度重要的生态系统，对各种受威胁的鸟类物种具有全球性意义。除了作为生命的摇篮，它还是一个蕴藏着各种动植物物种的基因库（重复）。尽管如此，这个脆弱的生态系统拥有鸟类群体，但由于人类活动，它每天都在消失。使用鸟类物种来确定栖息地生产力对于未来的保护和更好的管理至关重要。在 2019 年 1 月至 3 月的 15 个月期间，使用距离抽样点计数法进行了多次调查。总共固定了 250 个点计数站，间隔 300 米。总共记录了 9929 只鸟类个体，代表 57 种和 34 个科。在 57 种鸟类中，有两种易危，一种数据不足，一种近危，其余 53 种为低危。欧亚斑鸠 - Streptopelia decaocto（14.641 ± 2.532/ha）、白头鹎 - Pycnonotus leucotis（13.398 ± 4.342/ha）和普通画眉 - Turdoides caudata（10.244 ± 2.345/ha）是三种丰度最高的丰富物种。然而，由于样本量小，三种物种的密度，即白喉林莺、苍鹭和渔雕，没有进行分析。多样性指数的研究结果表明，河流林栖息着多样的鸟类物种，它们均匀地分布在整个森林中。此外，记录的十种觅食群体表明，河流林富含食物资源。此外，植物结构重要值指数结果表明，河流林种类繁多，植物丰富，包括树木、灌木、杂草和草，使其成为鸟类有吸引力和生产力的栖息地。
