Current state of the macrophytobenthos in Tendrivska and Yagorlycka Bays of Black Sea Biosphere Reserve

Korolesova, Daria

doi:10.14255/2308-9628/17.134/4

Cited by 3 publications

(1 citation statement)

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“…Coastal water bodies threatened from both land and sea sides are some of the most endangered and shrinking habitats worldwide [127,128]. There is no assessment of charophyte habitat loss at the coast of the Caspian Sea available, but a long-term negative trend is notable for the Black Sea region, where it has already resulted in a significant decrease in charophyte biomass and their community areas [47,[129][130][131]. Some lagoons in this region harbor gyrogonites and oospores in bottom sediments, whereas charophyte stands seem to be lacking [132,133].…”

Section: Discussionmentioning

confidence: 99%

The Charophytes (Charophyceae, Characeae) from Dagestan Aquatic Habitats, North Caucasus: Biogeographical and Barcoding Perspectives

Romanov,

Mallaliev,

Barinova

et al. 2023

Environments

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The charophytes in many regions of the world are still poorly understood. This hampers the synthesis of distributional and ecological datasets at worldwide and continental scales, as well as complicates the generalization of species concepts for widely distributed and local taxa. To fill in the blanks for charophytes in the Caucasus and to improve our knowledge of species distribution areas in Eurasia, a field survey and study of available specimens from Dagestan (North Caucasus, Russia) was conducted based on morphological observation using light and scanning electron microscopy and molecular genetic analyses allowing for the precise identification and testing of the presence of cryptic and undescribed taxa. Nineteen new localities for seven Chara species and one Tolypella species, seven new species, and one new genus were identified in the studied region, and one new species in the Caspian Sea region was found. Some species records changed the outline or filled in the gaps in species distribution data. The presence of species distributed mainly in central Eurasia (C. globata, C. neglecta) with mainly Mediterranean–Middle Eastern species (C. gymnophylla) is notable for this region, as well as for other studied regions of the Caucasus characterized by a mixture combination of species with different distribution patterns. Chara gymnophylla was frequent in Dagestan, similar to the Mediterranean and Middle Eastern regions. Small brackish waterbodies on the coast of the Caspian Sea, freshwater mountain rivers, small associated waterbodies, and water reservoirs are the main habitats of charophytes in the studied region. Based on habitat preference and distribution in the Caucasus, recommendations for the protection of some species were suggested. The lack of endemic species among charophytes from Dagestan and Caucasus contrasts with the flora of terrestrial magnoliophytes that is rich in species endemism.

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Section: Discussionmentioning

confidence: 99%

The Charophytes (Charophyceae, Characeae) from Dagestan Aquatic Habitats, North Caucasus: Biogeographical and Barcoding Perspectives

Romanov,

Mallaliev,

Barinova

et al. 2023

Environments

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Chroodactylon ornatum (C.Agardh) Basson (Rhodophyta, Stylonematales) in the flora of Ukraine: distribution, conservation and the data on a new locality

Burova,

Sadogurska,

Mikhailyuk

2024

Algologia

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The article discusses data on distribution, ecology and conservation of the pseudofilamentous red alga Chroodactylon ornatum (C.Agardh) Basson (Stylonematales, Rhodophyta) in Ukraine. The article includes original microphotographs, morphological description, and data on the new locality (Miskyi Stav (City Pond), Ivano-Frankivsk), which is the sixth and westernmost recorded locality of the algae in freshwater bodies of Ukraine. The species has a very peculiar morphology, is characterized by a wide ecological amplitude, occurs in saline (marine), brackish and freshwater waterbodies and is included in the Red Data Book of Ukraine with the category "rare". The analysis of literature data on the species distribution within Ukraine confirmed the presence of at least 39 localities of C. ornatum. It is noted that the species is, on the one hand, very rare in freshwater environments and, it is common in marine communities along the Black Sea coast of Ukraine (with some findings in coastal estuaries and the Sea of Azov). This raises the question of the need for further detailed nomenclatural, taxonomic, and algosozological studies of freshwater populations of the species.

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Syntaxonomy of Charophyte Algal Communities in the Northeastern Part of the Black Sea (Russia)

Afanasyev,

Berezenko,

Barinova

et al. 2023

Environments

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Within the northeastern part of the Black Sea, the vegetation of charophytes was studied using the Braun-Blanquet approach. For the first time, five communities are described, including three associations and two subassociations from the alliance Charion canescentis Krausch 1964, the order Charetalia intermediae Sauer 1937, and the class Charetea intermediae F. Fukarek 1961. Diagnoses of the described syntaxa are given. A comparison with the Baltic and Mediterranean communities of charophytes is made. It is shown that all northeastern Black Sea communities with the dominance of charophytes, in contrast to Western European ones, include Lamprothamnium papulosum with high constancy. At the same time, the investigated communities are characterized by a lower occurrence and abundance of higher aquatic plants (except for Nanozostera noltei) and a slightly higher occurrence of red and green algae. An indirect ordination analysis showed the ecological isolation of the described phytocenoses and revealed two main factors influencing the floristic composition of communities—the granulometric composition of bottom sediments and water eutrophication.

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Current state of the macrophytobenthos in Tendrivska and Yagorlycka Bays of Black Sea Biosphere Reserve

Cited by 3 publications

References 1 publication

The Charophytes (Charophyceae, Characeae) from Dagestan Aquatic Habitats, North Caucasus: Biogeographical and Barcoding Perspectives

The Charophytes (Charophyceae, Characeae) from Dagestan Aquatic Habitats, North Caucasus: Biogeographical and Barcoding Perspectives

<i>Chroodactylon ornatum</i> (C.Agardh) Basson (<i>Rhodophyta</i>, <i>Stylonematales</i>) in the flora of Ukraine: distribution, conservation and the data on a new locality

Syntaxonomy of Charophyte Algal Communities in the Northeastern Part of the Black Sea (Russia)

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