Search

The aim of the work is to supplement the current data on the fauna and population of passerine birds on the Nature Reserve "Bolsherechensky", located in the Altai Territory in the lower reaches of the Bolshaya Rechka River. The territory of the preserve is typical for the Verkhneobskiy forest area. One of the primary duties of the Nature Reserve is to protect the habitats of rare and endangered bird species. However, the modern avifauna in the reserve, despite several previous reports, remains underestimated and not sufficiently studied. Our work has been carried out over the spring and summer of 2012, 2013, 2017 and 2021. The number of species was estimated based on their density obtained during the survey, and a point scale was used to describe the species. We concluded that the summer (breeding) passerine bird populations of the Nature Reserve "Bolsherechensky" consist of 12 families and 35 species, while the presence of 15 rare bird species was registered in the Reserve. Our results will enrich the data bank on the fauna and the population of passerine birds of the lower reaches of the Bolshaya Rechka River in the Nature Reserve "Bolsherechensky", which can be used to improve biodiversity conservation measures., The authors thank A.V. Gribkov and L.V. Pozhidaeva for their financial and technical help in organizing field studies. The authors are also grateful for the efforts of the individual expedition participants, R.F. Bakhtin, Ph. Bakhtin, V.N. Kozil, student N.A. Kolotov and high school student A. Bespalov. V. Vazhov and S. Vazhov were partially supported in 2012 by the Global Greengrants Fund grant, Project "Let us save the raptors of the Upperobian bog!", and in 2017 by Lash-Rasha LLC.

Many species of Orchidaceae Juss. are known as beautifully flowering plants, having medicinal, food, decorative, and other qualities. All this draws attention to orchids and promotes their extermination. The expansion of the tourism and recreational development of the Altai Republic and the economic activity of the population aggravate the processes of reduction of rare species of the Orchidaceae Juss. In this sense, the search for new orchid locations is relevant. The purpose of this work is to supplement the database on habitats of rare orchid species in the Altai Republic. Five new habitats of three orchid species were established in the northeast Altai in the basin of the upper Biya River. Cypripedium guttatum Sw. Cypripedium macranthon Sw., and Dactylorhiza fuchsii (Druce) Soo (Orchis fuchsii (Druce), information that is missing in the third edition of the Altai Republic Regional Red Book. Two orchid locations were found in the lower reaches of the Tuloy River valley, a third was found in the lower reaches of the Tondoshka River, the fourth was registered near the Turochak village and the fifth was observed on the left bank of the Biya River near the village Verkh-Biysk. All new habitats were registered in the Turochaksky district of the Altai Republic., A.V. Matsyura was supported by the Priority-2030 program, Altai State University.