Begell House Inc.
International Journal on Algae
IJA
1521-9429
17
3
2015
New Data on Morphology, Taxonomy, and Distribution of Diatom Eunotia biconstricta (Grunow) Lange-Bert. (Bacillariophyta)
203-210
10.1615/InterJAlgae.v17.i3.10
S. I.
Genkal
Papanin Institute for Biology of Inland Waters RAS, Settle Borok, Nekouz District, Yaroslavl Region 152742, Russia
T.V.
Chekryzheva
Institute of Water Problems of the North, Karelian Research Center, 50, Pr. Al. Nevskogo, Petrozavodsk, 185003 Republic of Karelia, Russia
Bacillariophyta
Eunotia biconstricta
morphology
taxonomy
distribution
The study of extensive materials from the rivers and lakes of Karelia and Western Siberia using scanning electron microscopy revealed significant morphological variability of quantitative (valve length and width, the number of striae and areolae in 10 µm) and qualitative (shape of valve and terminal raphe fissures) features. Based on the original and published data, it allowed extending the description of Eunotia biconstricta and referring some taxa as synonyms.
Taxonomic Composition of Diatom Assemblages (Bacillariophyta) from the Quaternary Deposits, Scotia Sea (Antarctic)
211-218
10.1615/InterJAlgae.v17.i3.20
O.S.
Ogienko
Institute of Geology, Taras Schevchenko National University of Kiev, 90, Vasilkovskaya St., Kiev 03022, Ukraine
Bacillariophyta
Scotia Sea
Antarctic
Pleistocene
Miocene
paleoenvironmental reconstructions.
The taxonomic composition of diatom assemblages in the Upper Quaternary sediments of the Southern Scotia Sea is studied. In sea-floor deposits a number of species typical for modern plankton associations of this region was revealed. They provide evidence for similarity of the paleoenvironmental and modern conditions of the basin. In the lower stratum of the sediments, valves of more ancient Middle Miocene species occur among diatoms of the Late Quaternary indicating the redeposition that took place in that period. The results of the study of taxonomic composition and ecological structure of the redeposited diatomaceous assemblages are presented, and analysis of the paleoenvironment of the Miocene basin was performed.
New Invader in the Black Sea: Kelp Chorda tomentosa Lyngb.
219-224
10.1615/InterJAlgae.v17.i3.30
G. G.
Minicheva
Institute of Marine Biology, National Academy of Sciences of Ukraine 37, Pushkinskaya St., Odesa 65048, Ukraine
Chorda tomentosa
kelp
invader
Black
In early spring of 2015, in the northwestern part of the Black Sea (Ukraine, Odessa Bay, Big Fountain Cape) the brown alga Chorda tomentosa Lyngb. 1819 was found. This kelp is a new invader in the Black Sea and the sole representative of the order of Laminariales Mig. 1909 in this area.
Planktic Cyanoprokaryota of the Northwestern Part of the Black Sea (Ukraine)
225-241
10.1615/InterJAlgae.v17.i3.40
L. M.
Terenko
Institute of Marine Biology, NAS Ukraine, 37, Pushkinskaya St., Odessa 65011, Ukraine
D. A.
Nesterova
Institute of Marine Biology, NAS Ukraine, 37, Pushkinskaya St., Odessa 65011, Ukraine
Cyanoprokaryota
cyanobacteria
plankton
taxonomic structure
water bloom
eutrophication
northwestern Black Sea
The results of the study of species composition, abundance, and biomass of planktic Cyanoprokaryota of the northwestern part of the Black Sea are presented. A total of 63 species of cyanophytes were recorded. Aphanocapsa salina Woron., Aphanothece salina Elenkin et A.N. Danilov, Dolichospermum affine (Lemmerm.) Wacklin, L. Hoffm. et Komarek, Anabaenopsis elenkinii V.V. Mill., A. seriata Prescott, Pseudanabaena limnetica (Lemmerm.) Kom., Oscillatoria limosa Agardh ex Gomont, Microcystis wesenbergi (Komarek) Komarek, and Planktothrix sp. are first cited for the Black Sea. In recent years, mass development of Cyanoprokaryota causeb water blooms in the summer and early autumn to worsen water quality. Dominant species are D. affine, Aphanizomenon flos-aquae Ralfs ex Bornet et Flahault, Nodularia spumigena Mert. ex Bornet et Flahault, Oscillatoria kisselevii Anissimova, Spirulina laxissima G.S. West, and Microcystis aeruginosa (Kutz.) Kutz. The dynamics of number and biomass, the percentage of Cyanoprokaryota in the structure of phytoplankton and possible causes of water bloom are discussed.
Macrophytobenthos of the Botanical Reservation of National Significance "Zernov's Phyllophora Field" (Ukraine)
243-251
10.1615/InterJAlgae.v17.i3.50
F. P.
Tkachenko
Ukrainian Scientific Center of Ecology of Sea (UkrSCES), Ministry of Ecology and Natural Resources of Ukraine, 89, French Boulevard, Odessa 65009, Ukraine; Institute of Evolution, University of Haifa, Mt Carmel 31905 Haifa, Israel
I. P.
Tretiak
Ukrainian Scientific Center of Ecology of Sea (UkrSCES), Ministry of Ecology and Natural Resources of Ukraine, 89, French Boulevard, Odessa 65009, Ukraine
botanical reservation
seaweeds
species composition
phyllophora
recovery
Species composition of macrophytobenthos of the botanical reservation "Zernov's Phyllophora Field" is discussed. Currently, there are 24 species including 12 species of Rhodophyta and 6 species each of Phaeophyta and Chlorophyta. We observed a noticeable trend towards recovery the thickets of phyllophora and species composition of phytobenthos field on the former territory of ZPF.
Phytoplankton Taxonomical Structure in the Middle Part of Southern Bug River (Ukraine)
253-262
10.1615/InterJAlgae.v17.i3.60
Ye. P.
Belous
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
P. D.
Klochenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
algal flora
phytoplankton
taxonomical structure
Southern Bug River
middle part
Phytoplankton of the middle part of the Southern Bug River is represented by 334 algae species (358 infr. taxa) including original and literature data. The basis of taxonomical structure consists of Chlorophyta (44.4%), Bacillariophyta (22.8%), Euglenophyta) (10.8%), and Cyanoprokaryota (10.4%). Main genuses are Desmodesmus, Euglena, Trachelomonas, Phacus, Monoraphidium, Nitzschia, Scenedesmus, Oocystis, Merismopedia, and Microcystis. The differences in taxonomical structure when compared with the literature data were noted. Thirteen species of algae, rare for Ukrainian flora, were revealed.
The Role of Diatoms in Feeding of Clypeasteroids Scaphechinus mirabilis and Echinarachmus parma (Echinoidea, Clypeasteroida)
263-273
10.1615/InterJAlgae.v17.i3.70
A. A.
Begun
A.V. Zhirmunsky Institute of Marine Biology of the Far East Branch of the RAS, 17, Palchevsky St., Vladivostok 690041, Russia
Yu. N.
Elkin
G.B. Eliakov Pacific Institute of Bioorganic Chemistry of the Far East Branch of the RAS, 159, 100 Let Vladivostoku Pr., Vladivostok 690022, Russia
Clypeasteroida
feeding
faeces
diatoms
algal flora
Sea of Japan
Algal flora of the coarse-grained sandy substrate and faeces of clypeasteroids Scaphechinus mirabilis (Agazzis, 1863) and Echinarachmus parma (Lamarck, 1818) living in Troitsa Bay, Sea of Japan, were studied. A total of 50 species of microalgae were recorded, most of them (42) belonging to Bacillariophyta. In the clypeasteroids faeces, diatoms were less diverse (27 species) when compared with a sandy substrate (50); most of the cells had chloroplasts, which provided evidence for selection of the clypeasteroids during feeding. High similarity of algae flora in S. mirabilis and E. parma faeces (0.97) indicated the similarity in food specialization of these clypeasteroids sharing the same ecological niche. The data largely confirmed the assumption of the essential role of diatoms in the feeding of clypeasteroid S. mirabilis.
Phytohormones of Microalgae: Biological Role and Involvement in the Regulation of Physiological Processes. Pt I. Auxins, Abscisic Acid, Ethylene
275-289
10.1615/InterJAlgae.v17.i3.80
E. A.
Romanenko
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2, Tereshchenkovskaya St., Kiev 01004, Ukraine
I. V.
Kosakovskaya
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2, Tereshchenkovskaya St., Kiev 01001, Ukraine
P. O.
Romanenko
Department of Botany, Institute of Biology, Taras Shevchenko National University of Kiev,
64, Vladimirskaya St., Kiev 01601, Ukraine
microalgae
auxins
abscisic acid
ethylene
growth
resistance
stress
Phytohormones play a key role in the regulation of growth, development and sustainability of the plants. Phytohormones of microalgae are considered as exogenous growth regulators, affecting the tolerance to factors of abiotic and biotic stress, as well as endogenous components of microalgae affecting the processes of biosynthesis of pigments and lipids. The review analyzed and summarized published data about the peculiarities of different classes of plant hormones formation and their impact on the growth and development of microalgae. The role of auxins, abscisic acid and ethylene in the regulation of growth processes and the development of resistance to abiotic stressors in different species of microalgae are discussed.
Paleoecological Reconstructions of Paleocene Sediments from the Tethyan Province Based on Calcareous Nannofossils
291-302
10.1615/InterJAlgae.v17.i3.90
I.S.
Suprun
Institute of Geological Sciences, NAS of Ukraine, 55b, O. Gonchar St., Kiev 01001, Ukraine
calcareous nannofossils
paleobiogeography
paleoecology
paleobasins
climatic zones
The paper presents the results of a paleoenvironmental analysis of calcareous nannofossils from Paleocene deposits of some areas of Tajikistan, Egypt, Ukrainian Carpathians, and the NW shelf of the Black Sea. The results of the study allow reconstruction of the paleobionomic conditions of the Paleocene basins. It was found that in the Paleocene period most of the study area was characterized by warm (tropical and subtropical) conditions.