Research of macroscopic bottom vegetation of the recreational zone of the Karadag Reserve (Black Sea) using hydroacustic methods
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Abstract
The main idea behind using the acoustic method to zone the underwater landscapes of recreational areas on the Southern Coast of Crimea is to quickly identify the boundaries of solid block-boulder substrates that are suitable for macro-layers, as well as loose sandy and silty soils where seagrasses are commonly found. For specially protected marine areas, studying the macrophytobenthos using hydroacoustic methods optimizes the long and time-consuming process of data collection. It also reduces the negative impact on the research object. According to acoustic studies conducted in the marine area of the Karadag Nature Reserve in August 2022 and September 2023, the following characteristics of the Ericaria crinita (Duby) Molinari & Guiry (= Cystoseira crinita) and Gongolaria barbata (Stackhouse) Kuntze (= Cystoseira barbata) phytocenosis were determined for the first time using a contactless method: distribution boundaries, height of thalloms, and projective coverage. It is determined that the area of the seabed inhabited by the Ericaria crinita + Gongolaria barbata phytocenosis is 0.15 km2. Estimates of the biovolume of E. crinita and G. barbata thickets and their total reserves in the studied area (420–1020 tons) were obtained.
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References
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