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Zeitschriftenartikel zum Thema „Phymatolithon“

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Autor: Grafiati

Veröffentlicht am 27. Juli 2024

Zuletzt aktualisiert am 29. Juli 2024

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1

Costa, Iara Oliveira, Paulo Antunes Horta, Ellie R. Bergstrom und José Marcos De Castro Nunes. „Taxonomic study of crustose coralline algae off the northeastern Brazilian coast“. Phytotaxa 190, Nr. 1 (24.12.2014): 130. http://dx.doi.org/10.11646/phytotaxa.190.1.10.

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This work presents a detailed morphoanatomical study of crustose coralline algae species from the northeastern Brazilian coast, in the north of Bahia state. Nine species have been recognized: Sporolithon episporum, Lithophyllum stictaeforme, Spongites yendoi, Spongites sp., Mesophyllum erubescens, Phymatolithon masonianum, Phymatolithon calcareum, Lithothamnion crispatum and Lithothamnion brasiliense. Phymatolithon masonianum and Phymatolithon calcareum constitute the first record of these species for the northern coast of Brazil. An identification key, as well as descriptions, illustrations, comparisons with related taxa, and geographical distributions for Brazil as well as global geographic distributions are presented. Additionally, some ecological implications are discussed focusing the need of more studies about this neglected group of coralline red algae.

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2

Pardo, Cristina, Ignacio Bárbara, Rodolfo Barreiro und Viviana Peña. „Insights into species diversity of associated crustose coralline algae (Corallinophycidae, Rhodophyta) with Atlantic European maerl beds using DNA barcoding“. Anales del Jardín Botánico de Madrid 74, Nr. 2 (20.10.2017): 059. http://dx.doi.org/10.3989/ajbm.2459.

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DNA barcoding in combination with morpho-anatomical analysis was applied to study the diversity of crustose coralline algae associated to two maerl beds from two protected Atlantic European areas from Brittany and Galicia —France and Spain, respectively—. Given the records of gametophytes of the maerl species Phymatolithon calcareum under crustose growth-forms, and that associated crustose coralline algae appear to be involved in the recruitment of new maerl plants, we compared the species composition between the associated crustose coralline algae to Breton and Galician maerl beds with the maerl species identified in these beds in previous DNA barcoding surveys. Our molecular results revealed higher species diversity in associated crustose coralline algae than in maerl-forming species. Nine taxa of crustose coralline algae were found in both study areas: four in Brittany and five in Galicia. Three species from Brittany were identified as Phymatolithon calcareum, Phymatolithon lamii, and Lithophyllum hibernicum. The remaining six ones were assigned to the genera Phymatolithon and Mesophyllum, along with Lithothamnion and Lithophyllum. Morpho-anatomical examination of diagnostic characters corroborated our molecular identification. Our results showed that the most representative genus of crustose coralline algae in Brittany was Phymatolithon, while in Galicia was Mesophyllum. In Brittany, Phymatolithon calcareum was found under both growth-forms, maerl and crustose coralline algae, the latter assigned to the gametophyte stage by the presence of uniporate conceptacles. The recruitment of new maerl plants involving associated crustose coralline algae with maerl beds may occur, but only we can affirm it for Phymatolithon calcareum in Brittany. By contrast, the different species composition between both growth-forms in the Galician maerl beds would indicate that the fragmentation of own free-living maerl species appears to be the most common propagation mechanism.

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3

Wilks, KM, und WJ Woelkerling. „An account of southern Australian species of Phymatolithon (Corallinaceae, Rhodophyta) with comments on Leptophytum“. Australian Systematic Botany 7, Nr. 3 (1994): 183. http://dx.doi.org/10.1071/sb9940183.

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Phymatolithon (Corallinaceae, Rhodophyta) is represented in southern Australia by two species: P. repandum, previously recorded from the region, and P. masonianum sp. nov. Detailed morphological, anatomical and taxonomic accounts are provided along with comparisons to the type species of the genus, P. calcareum. A critical evaluation of the at least 16 characters previously used to delimit species within Phymatolithon has shown that only three are useful in delimiting southern Australian species, but five new features have also been found to have value in species delimitation. Four of the above eight relate to vegetative features and four to tetra/bisporangial conceptacle features. The latter can also serve to distinguish southern Australian species from the type species. Characters recently proposed to delimit Leptophytum from Phymatolithon have been found to be unsatisfactory, and Leptophytum is reaffirmed as a genus in need of further evaluation. Southern Australian species ascribed at some stage to Leptophytum have been found to belong to Phymatolithon. A short historical introduction is also provided along with keys to southern Australian species, information on distribution, seasonality and habitat, nomenclature and synonymy and concluding remarks.

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4

Woelkerling, W. J., G. Furnari und M. Cormaci. „Leptophytum (Corallinaceae, Rhodophyta): To be or not to be?—That is the question, but what is the answer?“ Australian Systematic Botany 15, Nr. 5 (2002): 597. http://dx.doi.org/10.1071/sb02002.

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The question of whether or not Leptophytum (Corallinaceae, Rhodophyta) should be recognised as a distinct genus has been addressed using new data generated from type and other specimens combined with analyses of previously published data from various authors. The results have shown that none of the criteria proposed to separate Leptophytum from Phymatolithon are reliable at generic level. Some lead to the exclusion of type species from genera, others are impossible to assess because information is lacking for virtually all included species, others have character states that intergrade and thus are unsuitable and still others appear to be useful for separating species but not genera. Most of the character states proposed as diagnostic of Leptophytum are unknown or are not present in most of the species that were explicitly included in the recent proposed re-instatement of the genus and, in some cases, species included in Leptophytum show the opposing character state for Phymatolithon. No serious conflict occurs between the holotype fragments of Leptophytum laeve (the type species of Leptophytum) and the designated epitype and the designation of an epitype is fully justified because all of the characters evident in the holotype are demonstrably ambiguous and could apply to more than one species. Moreover, new evidence supports the probable conspecificity of the holotype and the designated epitype and reinforces the conclusion that Leptophytum should not be recognised as a genus distinct from Phymatolithon. Nomenclaturally, the correct authorship of the name of the type species of Leptophytum is L. laeve Adey and not L. laeve (Str�mfelt) Adey or L. laeve (Foslie in Rosenvinge) Adey, and for purposes of priority, the name Leptophytum laeve dates from 1966.

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5

Carro, Belén, Lua Lopez, Viviana Peña, Ignacio Bárbara und Rodolfo Barreiro. „DNA barcoding allows the accurate assessment of European maerl diversity: a Proof-of-Concept study“. Phytotaxa 190, Nr. 1 (24.12.2014): 176. http://dx.doi.org/10.11646/phytotaxa.190.1.12.

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Two non-geniculate coralline red algae (Lithothamnion corallioides and Phymatolithon calcareum) are partially protected under the assumption that they are the main components of maerl beds in Atlantic Europe. However, what we know about the composition of maerl relies mainly on morphology-based identifications that are notoriously difficult due to a lack of diagnostic features, convergence, and widespread phenotypic plasticity. Now, this state of affairs can be improved with new alternatives that, unlike morphology, allow the unambiguous partition of a large number of rhodoliths into species regardless of their size, shape, and condition (fertile or sterile). Here, we report the first DNA barcoding assessment of the relative abundance of maerl-forming algae. The plastidial gene psbA was sequenced for 1140 rhodoliths from 15 maerl beds scattered along 2000 km from the British Isles to South Portugal; rhodoliths were randomly collected along linear transects to obtain quantitative estimates of species composition. Most (97%) of our collections belonged to three, rather than two, species that often appeared intermixed along a single transect. Lithothamnion corallioides and P. calcareum dominated in the British Isles and Brittany (NW France), but they were gradually replaced by Phymatolithon sp3 in Galicia (NW Spain) and became extremely rare in Algarve (S Portugal). Morphology (rhodolith size and shape, branch diameter, habit) varied considerably between and within beds but the three species converged to a remarkably similar habit when living in sympatry. Still, P. calcareum and L. corallioides seemed to perform best in Brittany while Phymatolithon sp3 produced the largest rhodoliths with thickest branches in Algarve. Altogether, our study shows that the replacement of species of maerl seen in northern latitudes continues to the south along the coasts of Iberia. It also serves as a proof-of-concept of the benefits of DNA barcoding for ecological and biogeographic research of these taxonomically challenging taxa.

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6

Irvine, Linda M., und Wm J. Woelkerling. „(843) Proposal to Conserve Phymatolithon against Apora (Rhodophyta: Corallinaceae)“. Taxon 35, Nr. 4 (November 1986): 731. http://dx.doi.org/10.2307/1221631.

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7

Rebelo, Ana Cristina, Michael Rasser, Rafael Riosmena-Rodríguez, Ana Isabel Neto und Sérgio Ávila. „Rhodolith forming coralline algae in the Upper Miocene of Santa Maria Island (Azores, NE Atlantic): a critical evaluation“. Phytotaxa 190, Nr. 1 (24.12.2014): 370. http://dx.doi.org/10.11646/phytotaxa.190.1.22.

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The Late Miocene Malbusca outcrop is located in the southeastern coast of Santa Maria Island (Azores, NE Atlantic), interspersed in volcanic formations. At ~20 meters above present sea level, a prominent discontinuous layer of rhodoliths seizes with an extension of ~250 meters. This paper presents the first taxonomic record of fossil rhodolith forming coralline algae for the Miocene of the Azores. The preserved taxonomic features used were the following: (1) arrangement of basal filaments, (2) epithallial cells (when observable), (3) presence of cell fusions, (4) conceptacle type, (5) number of cells layers which conceptacle chamber floors are situated below the surrounding thallus surface and (6) for the sporangial pores, the orientation of the filaments around the conceptacle pores. Based on these characters, six taxa were identified encompassing three Corallinaceae (Lithophyllum prototypum, Lithophyllum sp., Spongites sp. and Hydrolithon sp.) and one Hapalidaceae (Phymatolithon calcareum and cf. Phymatolithon sp.). An unidentified coaxial thallus was also present, the coaxial construction ascribing the specimens to the genus Mesophyllum or Neogoniolithon. Taxonomic accounts for the identified taxa are described, illustrated and an identification key is provided. The report of L. prototypum represents the first Miocene record and the preservation of the specimens is very good. Miocene coralline algae seem very consistent among deposits but some species are relevant for particular areas, like in the Azores.

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8

Jeong, So Young, Guillermo Diaz-Pulido, Boo Yeon Won und Tae Oh Cho. „Phymatolithon atlanticum sp. nov. (Hapalidiales, Rhodophyta) from the northeast Atlantic Ocean“. Phycologia 60, Nr. 3 (24.03.2021): 200–209. http://dx.doi.org/10.1080/00318884.2021.1885197.

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9

Jeong, So Young, Boo Yeon Won, Kristian Hassel und Tae Oh Cho. „Revision of Phymatolithon purpureum (Hapalidiales, Rhodophyta) based on ultrastructural and molecular data“. European Journal of Phycology 54, Nr. 3 (20.05.2019): 326–41. http://dx.doi.org/10.1080/09670262.2018.1563217.

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10

Adey, Walter H., Jazmin J. Hernandez-Kantun, Paul W. Gabrielson, Merinda C. Nash und Lee-Ann C. Hayek. „Phymatolithon (Melobesioideae, Hapalidiales) in the Boreal–Subarctic Transition Zone of the North Atlantic“. Smithsonian Contributions to Marine Sciences, Nr. 41 (06.04.2018): 2–90. http://dx.doi.org/10.5479/si.1943-667x.41.

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11

Jeong, SoYoung, BooYeon Won und Tae Oh Cho. „Two new encrusting species from the genus Phymatolithon (Hapalidiales, Corallinophycidae, Rhodophyta) from Korea“. Phycologia 58, Nr. 6 (12.07.2019): 592–604. http://dx.doi.org/10.1080/00318884.2019.1625608.

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12

Wegeberg, Susse, und Curt M. Pueschel. „Epithallial and initial cell fine structure in species of Lithothamnion and Phymatolithon (Corallinales, Rhodophyta)“. Phycologia 41, Nr. 3 (Mai 2002): 228–44. http://dx.doi.org/10.2216/i0031-8884-41-3-228.1.

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13

Basso, Daniela, Davor Vrsaljko und Tonći Grgasović. „The coralline flora of a Miocene maërl: the Croatian “Litavac”“. Geologia Croatica 61, Nr. 2-3 (25.12.2008): 333–40. http://dx.doi.org/10.4154/gc.2008.25.

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The fossil coralline flora of the Badenian bioclastic limestone outcropping in Northern Croatia is known by the name “Litavac”, shortened from “Lithothamnium Limestone”. The name was given to indicate that unidentified coralline algae are the major component. In this first contribution to the knowledge of the coralline flora of the Litavac, Lithothamnion valens seems to be the most common species, with an unattached, branched growth-form. Small rhodoliths composed of Phymatolithon calcareum and Mesophyllum roveretoi also occur. The Badenian benthic association is dominated by melobesioid corallines, thus it can be compared with the modern maërl facies of the Atlantic Ocean and Mediterranean Sea. Since L. valens still survives in the present-day Mediterranean, an analogy between the Badenian Litavac and the living L. valens facies of the Mediterranean is suggested.

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14

Van der Merwe, E., und G. W. Maneveldt. „The genus Phymatolithon (Hapalidiaceae, Corallinales, Rhodophyta) in South Africa, including species previously ascribed to Leptophytum“. South African Journal of Botany 90 (Januar 2014): 170–92. http://dx.doi.org/10.1016/j.sajb.2013.11.004.

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15

Johnson, Craig R., und Kenneth H. Mann. „The crustose coralline alga, Phymatolithon Foslie, inhibits the overgrowth of seaweeds without relying on herbivores“. Journal of Experimental Marine Biology and Ecology 96, Nr. 2 (April 1986): 127–46. http://dx.doi.org/10.1016/0022-0981(86)90238-8.

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16

Sordo, Laura, Rui Santos, Isabel Barrote und João Silva. „High CO2 decreases the long-term resilience of the free-living coralline algae Phymatolithon lusitanicum“. Ecology and Evolution 8, Nr. 10 (16.04.2018): 4781–92. http://dx.doi.org/10.1002/ece3.4020.

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17

Harvey, Adele S., Wm J. Woelkerling und Alan J. K. Millar. „An account of the Hapalidiaceae (Corallinales, Rhodophyta) in south-eastern Australia“. Australian Systematic Botany 16, Nr. 6 (2003): 647. http://dx.doi.org/10.1071/sb03008.

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This paper provides the first monographic account of south-eastern Australian representatives of the Hapalidiaceae (Corallinales, Rhodophyta). The Hapalidiaceae includes those Corallinales whose tetrasporangia produce zonately arranged spores, and whose tetrasporangia/bisporangia are borne in conceptacles, produce apical plugs, develop beneath multiporate plates or roofs, and are not enclosed individually within calcified sporangial compartments. The Hapalidiaceae contains the subfamilies Choreonematoideae, Melobesioideae and Austrolithoideae, all formerly placed in the Corallinaceae sensu lato. The Choreonematoideae is represented in south-eastern Australia by a single species, Choreonema thuretii. The Melobesioideae is represented by five genera (Melobesia, Lithothamnion, Phymatolithon, Mesophyllum, Synarthrophyton) and eight species. Synarthrophyton pseudosorus sp. nov. is newly described. The presence of tetrasporangial conceptacles occurring in irregularly shaped dense clusters that contain both discrete conceptacles and fused groups of conceptacles delimits this species from all other species of Synarthrophyton. Morphological and anatomical accounts are provided, including keys, information on distribution, habitat and nomenclature. Brief biogeographic comparisons between south-eastern Australia and neighbouring regions are also made.

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18

Pardo, Cristina, Viviana Peña, Ignacio Bárbara, Myriam Valero und Rodolfo Barreiro. „Development and multiplexing of the first microsatellite markers in a coralline red alga (Phymatolithon calcareum, Rhodophyta)“. Phycologia 53, Nr. 5 (September 2014): 474–79. http://dx.doi.org/10.2216/14-031.1.

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19

Parker, Terry, und J. McLachlan. „Relationship between cover of Chondrus crispus (Gigartinales, Rhodophyta) and Phymatolithon (Corallinales, Rhodophyta) on friable rock substrata“. Hydrobiologia 204-205, Nr. 1 (September 1990): 247–51. http://dx.doi.org/10.1007/bf00040241.

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20

Peña, Viviana, Cristina Pardo, Lúa López, Belén Carro, Jazmin Hernandez-Kantun, Walter H. Adey, Ignacio Bárbara, Rodolfo Barreiro und Line Le Gall. „Phymatolithon lusitanicumsp. nov. (Hapalidiales, Rhodophyta): The Third Most Abundant Maerl-Forming Species in the Atlantic Iberian Peninsula“. Cryptogamie, Algologie 36, Nr. 4 (November 2015): 429–59. http://dx.doi.org/10.7872/crya/v36.iss4.2015.429.

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21

Bradassi, F., F. Cumani, G. Bressan und S. Dupont. „Early reproductive stages in the crustose coralline alga Phymatolithon lenormandii are strongly affected by mild ocean acidification“. Marine Biology 160, Nr. 8 (29.05.2013): 2261–69. http://dx.doi.org/10.1007/s00227-013-2260-2.

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22

Alongi, Giuseppina, Mario Cormaci und Giovanni Furnari. „The Corallinaceae (Rhodophyta) from the Ross Sea (Antarctica): a taxonomic revision rejects all records except Phymatolithon foecundum“. Phycologia 41, Nr. 2 (März 2002): 140–46. http://dx.doi.org/10.2216/i0031-8884-41-2-140.1.

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23

Rasser, Michael W., und Werner E. Piller. „Application of neontological taxonomic concepts to Late Eocene coralline algae (Rhodophyta) of the Austrian Molasse Zone“. Journal of Micropalaeontology 18, Nr. 1 (01.06.1999): 67–80. http://dx.doi.org/10.1144/jm.18.1.67.

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Abstract. Traditionally, different diagnostic characters have been used in the identification of fossil and Recent coralline algal genera. The taxonomy of fossil coralline algae has focused on well calcified features such as basal filaments and conceptacle perforation. In contrast, the taxonomy of Recent material uses a combination of several features with a low fossilization potential, such as epithallial cells and structures of sexual reproductive organs. In the studied material of the Late Eocene Austrian Molasse Zone Lithoporella, Neogoniolithon, Spongites, Phymatolithon and Sporolithon are identified and described applying features of neontological taxonomic concepts. These features are: (1) the arrangement of basal filaments; (2) the occurrence of cell fusions; (3) the relative length of subepithellial initials; (4) the conceptacle perforation; (5) the orientation of filaments around the conceptacle pore; and (6) the type of conceptacle roof formation. Some of these features were thought to be unpresentable in fossil material until recently. The fossilization potential of diagnostic features and the identification of the documented genera and species are discussed in detail. Moreover, a checklist for the description of fossil taxa is provided.

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24

Hrabovský, Juraj, und Dušan Starek. „Priabonian non-geniculate coralline algae from the Central Carpathian Paleogene Basin“. Carnets de géologie (Notebooks on geology) 22, Nr. 12 (01.08.2022): 567–617. http://dx.doi.org/10.2110/carnets.2022.2212.

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Encrusting coralline algae are important rock-building organisms of the lower Priabonian limestones from the Central Carpathian Paleogene Basin. Despite the effort of early palaeontologists, former classifications lacked many diagnostic characteristics and modern taxonomic concepts, which hinders their use for modern palaeontological interpretations. The situation is further complicated as recent DNA analyses of extant coralline algae highlight the limits of the morpho-anatomical classification and identify many coralline algal genera which can also be recognized in the fossil record. Because palaeontology deals exclusively with the morpho-anatomical characteristics, a synthesis of the new discoveries in molecular phylogenetic analyses with morphology-based palaeontological classifications is necessary. Our palaeontological study based on published investigations on coralline molecular genetics enabled: 1) the identification of seventeen coralline algal morphological species grouped in six genera: Sporolithon lugeonii, Sporolithon nummuliticum, Sporolithon sp. 1, Sporolithon sp. 2, Lithothamnion camarasae, Lithothamnion cf. corallioides, Lithothamnion prascoi, Lithothamnion cf. ramosissimum, Lithothamnion roveretoi, Lithothamnion sp., Phymatolithon sp., Mesophyllum fructiferum, Mesophyllum cf. engelhartii, Mesophyllum sp., Chamberlainium lemoinei, Lithoporella melobesioides, and Lithoporella cf. minus ; 2) the description of Chamberlainium lemoinei (Miranda) comb. nov. known from the Bartonian, and 3) the identification of a unique encrusting coralline alga tentatively assigned to the genus Lithothamnion.

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Lugilde, Juan, Viviana Peña und Ignacio Bárbara. „The order Corallinales sensu lato (Rhodophyta) in the Iberian Atlantic: current state of knowledge“. Anales del Jardín Botánico de Madrid 73, Nr. 2 (28.09.2016): 038. http://dx.doi.org/10.3989/ajbm.2424.

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A review of the order Corallinales sensu lato in the Atlantic Iberian Peninsula is presented with the aim of assessing its current state of knowledge in comparison with adjacent areas (British Isles-Atlantic France, Macaronesia and Iberian Mediterranean). According to the information compiled from more than 250 publications, herbarium data and manuscripts, we concluded that Atlantic Iberian coralline algae have been poorly studied, which resulted in only 49 species reported. By contrast, Macaronesia is the most species-rich region (91), followed by Spanish Mediterranean (67) and the British Isles-Atlantic France (61). In the Atlantic Iberian Peninsula, 17 species occurred commonly (present in more than 50% of the coastline), particularly those corresponding to the genera Amphiroa, Jania, Lithophyllum, Mesophyllum, and Phymatolithon. Instead, the genera Harveylithon, Hydrolithon, Leptophytum, Lithothamnion, Neogoniolithon and Pneophyllum have been occasionally reported. In the Atlantic Iberian Peninsula and adjacent regions, the epilithic growth-form was dominant, followed by the epiphytic, epizoic and the unattached (maerl/rodoliths); besides, sciaphilous taxa were more abundant than photophilous species. The low intertidal and shallow subtidal harbour a high diversity of coralline algae, as well as semi-exposed coasts or areas affected by currents. The present study confirms that studies on the Atlantic Iberian coralline algae are scarce, and that further research on this group is required.

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Mendoza, M. L., und J. Cabioch. „Étude comparée de la reproduction de Phymatolithon calcareum (Pallas) Adey & McKibbin et Lithothamnion corallioides (P. & H. Crouan) P. & H. Crouan (Corallinales, Rhodophyta), et reconsidérations sur la définition des genres“. Canadian Journal of Botany 76, Nr. 8 (01.08.1998): 1433–45. http://dx.doi.org/10.1139/b98-116.

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The two CorallinalesPhymatolithon calcareum and Lithothamnion corallioides are the main components of European maerl communities. A large majority of the thalli are free-living branches borne on juvenile crusts that are rarely found. A detailed investigation of these juvenile stages has allowed the discovery of their reproductive features. Sexual reproduction of P. calcareum, the type-species of the genus, is described here for the first time and thus gives fundamental data for the generic definition. On the floor of the female conceptacle, a set of carpogonial branches is formed. Each fertilized carpogonium then fuses with the supporting cell of the carpogonial branch, which is also its auxiliary cell. A small fusion cell is thus formed, which produces upwards a small gonimoblast reduced to a short chain of carposporangia. In a mature conceptacle, the surface of the fertile floor thus appears entirely covered with small gonimoblasts. In the male conceptacle, mature spermatangia produced on the floor are typically dendroid; those produced on the walls are of a more simple type. The organization of the asexual conceptacle is briefly reviewed. The reproduction of L. corallioides is also newly described and compared with that previously reported for L. muelleri, the type-species of the genus.Key words: Corallinales, Phymatolithon, Lithothamnion, sexual reproduction, generic definition.

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JOHER, S., E. BALLESTEROS und C. RODRÍGUEZ-PRIETO. „Macroalgal-dominated coastal detritic communities from the Western Mediterranean and the Northeastern Atlantic“. Mediterranean Marine Science 17, Nr. 2 (18.07.2016): 476. http://dx.doi.org/10.12681/mms.1438.

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This is a qualitative comparison of the distribution of macroalgal-dominated coastal detritic communities from the Western Mediterranean and the Northeastern Atlantic, based on our own data from the Balearic Islands (Western Mediterranean) and available data from literature. The macroalgal-dominated coastal detritic bottoms from both regions could be distinguished by the presence of a high number of regional exclusive non-carbonated species, and the presence of a high number of maërl-forming species in the Mediterranean. Further, regional differences in the distribution of some exclusive species allowed the distinction of three zones in the Northeastern Atlantic (United Kingdom, French Brittany and Galicia), while no differences were found within the Western Mediterranean. However, the algal communities considered in the selected literature could not be qualitatively distinguished, and all the samples should be considered as maërl beds. Lithothamnion corallioides and Phymatolithon calcareum were the most widespread maërl forming species in the two regions, while in the Western Mediterranean Spongites fruticulosus was also very frequent. According to the differences in the species composition of the basal and erect strata of these beds, and also in their species richness, five different morphologies of macroalgal-dominated detritic bottoms could be distinguished. Their main characteristic species and their biogeographical distribution are detailed.

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Ingrassia, Michela, Martina Pierdomenico, Daniele Casalbore, Francesco Giuseppe Falese und Francesco Latino Chiocci. „A Review of Rhodolith/Maerl Beds of the Italian Seas“. Diversity 15, Nr. 7 (15.07.2023): 859. http://dx.doi.org/10.3390/d15070859.

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Coralline algal beds are comprised of biogenic calcareous formations considered a habitat of high conservation interest, hosting a high great biodiversity. To assess the status of this habitat in the Italian seas, we report results from a systematic analysis of the available scientific literature. Italian rhodolith/maerl beds are reported on 31 Italian sites mostly located around islands, shoals, banks, terraces, and gentley sloping shelves, from 9 m to 130 m water depth (with a mean depth of about 56 m). The dominant species occurring in the Italian submarine sites are Phymatolithon calcareum and Lithothamnion corallioides, with a rich associated fauna including sponges, bryozoans, hydrozoans, polichaetes, molluscs, amphipods, gastropods, echinoderms. Despite the high biodiversity characterizing the Italian rhodolith/maerl beds, only seven submarine sites hosting this sensitive habitat are part of Marine Protected Areas (MPAs). This evidence highlights the need for actions focused on the implementation of effective management and proper conservation measures to preserve such precious habitats. Protection of this habitat cannot be effectively provided without access to multidisciplinary data (e.g., geospatial, biological, geophysical, geomorphological data) capable of assessing its spatial distribution and biological characteristics over wide areas. An increased research effort to improve the production of fine-scale distribution maps and monitoring activities is therefore needed.

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ADEY, WALTER H., ATHANASIOS ATHANASIADIS und PHILLIP A. LEBEDNIK. „Re-instatement of Leptophytum and its type Leptophytum laeve: taxonomy and biogeography of the genera Leptophytum and Phymatolithon (Corallinales, Rhodophyta)“. European Journal of Phycology 36, Nr. 2 (Mai 2001): 191–203. http://dx.doi.org/10.1017/s0967026201003092.

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Wolf, Marion A., Annalisa Falace, Sara Kaleb und Isabella Moro. „Molecular data confirm the existence of attached crustose tetrasporangial thalli in Phymatolithon calcareum (Melobesioideae, Hapalidiaceae, Rhodophyta) from the Mediterranean Sea“. Aquatic Botany 134 (Oktober 2016): 75–81. http://dx.doi.org/10.1016/j.aquabot.2016.07.006.

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Sordo, Laura, Rui Santos, Isabel Barrote und João Silva. „Temperature amplifies the effect of high CO 2 on the photosynthesis, respiration, and calcification of the coralline algae Phymatolithon lusitanicum“. Ecology and Evolution 9, Nr. 19 (13.09.2019): 11000–11009. http://dx.doi.org/10.1002/ece3.5560.

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Quinn, Brady Keith. „Identification of Phymatolithon lamii (Me. Lemoine) Y.M. Chamberlain 1991 following bleaching in the upper intertidal zone of the Minas Basin, Nova Scotia, Canada“. Journal of Coastal Life Medicine 4, Nr. 3 (März 2016): 181–86. http://dx.doi.org/10.12980/jclm.4.2016j5-253.

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Klochkova, N. G., T. A. Klochkova und A. V. Klimova. „MARINE BENTHIC ALGAE FROM COMMANDER ISLANDS (REVISION 2021). II. RHODOPHYTA“. Bulletin оf Kamchatka State Technical University, Nr. 55 (2021): 41–72. http://dx.doi.org/10.17217/2079-0333-2021-55-41-72.

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We present results of revision based on our personal data and reports published from 1889 to 2020 on the red algal species composition from the Commander Islands. The general list includes 150 species. Six species are reported for the first time, including Phymatolithon lamii, Neoabbottiella valentinae, Callophyllis beringensis, Kallymeniopsis verrucosa, Velatocarpus kurilensis, and Mazzaella hemisphaerica. These species are illustrated by photographs of samples collected by us from Bering Island in September 2020. Another 15 red algal species reported from this area by different authors we attributed by us to doubtful and incorrectly identified taxa. The list of valid species is organized similarly to that in our recent paper on flora of the green and brown algae from the Commander Islands [Klochkova et al., 2020]. In the list, we cite papers containing information on species records from this area. For all species, information on their distribution frequency, depth, and some ecological and biological features are provided. It is shown that in contrast to many other regions of the Russian Far East, the Commander Islands are well studied from phycological and floristic aspects. This is due to seasonal and year-round investigations carried out in this region in different time periods, a thorough diving survey on the coastal area and more complete study on microepiphyte species composition, including microscopic red algae.

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Rendina, Francesco, Sara Kaleb, Annalisa Caragnano, Federica Ferrigno, Luca Appolloni, Luigia Donnarumma, Giovanni Fulvio Russo, Roberto Sandulli, Valentina Roviello und Annalisa Falace. „Distribution and Characterization of Deep Rhodolith Beds off the Campania coast (SW Italy, Mediterranean Sea)“. Plants 9, Nr. 8 (04.08.2020): 985. http://dx.doi.org/10.3390/plants9080985.

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Rhodolith beds (RBs) are bioconstructions characterized by coralline algae, which provide habitat for several associated species. Mediterranean RBs are usually located in the mesophotic zone (below 40 m), and thus are frequently remote and unexplored. Recently, the importance and vulnerability of these habitats have been recognized by the European Community and more attention has been drawn to their investigation and conservation. This study reports the results of an extensive monitoring program, carried out within the Marine Strategy Framework Directive (2008/56/EC), in six sites off the Campania coast (Italy, Mediterranean Sea). New insights were given into the distribution, cover, vitality (i.e., live/dead rhodolith ratio), structural complexity, and coralline algae composition of RBs. Remotely operated vehicles (ROV) investigations allowed the description of several RBs, and the discovery of a RB with rhodolith cover >65% offshore the Capri Island. Only two sites (Secchitiello and Punta Campanella) showed a very low mean cover of live rhodoliths (<10%); hence, not being classifiable as RBs. The collected rhodoliths were mostly small pralines (~2 cm), spheroidal to ellipsoidal, with growth-forms ranging from encrusting/warty to fruticose/lumpy. Coralline algae identification revealed a high diversity within each bed, with a total of 13 identified taxa. The genus Lithothamnion dominated all sites, and Phymatolithon calcareum and Lithothamnion corallioides, protected by the Habitats Directive (92/43/EEC), were detected in all RBs.

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Hernandez Kantun, Jazmin J., Rafael Riosmena-Rodriguez, Walter H. Adey und Fabio Rindi. „Analysis of the cox2-3 spacer region for population diversity and taxonomic implications in rhodolith-forming species (Rhodophyta: Corallinales)“. Phytotaxa 190, Nr. 1 (24.12.2014): 331. http://dx.doi.org/10.11646/phytotaxa.190.1.20.

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Coralline red algae demonstrate phenotypic plasticity related to environmental factors, rendering their identification difficult. The cox2-3 spacer is a mitochondrial marker widely used for phylogeographic studies and discrimination between closely related species in red algae; however, cox2-3 spacer sequence data for coralline algae are still limited. In this study we substantially increase the number of cox2-3 spacer sequences available for coralline algae, exploring their usefulness for different types of molecular investigations in coralline algae (DNA barcoding and phylogeography), with emphasis on rhodolith-forming species. Specimens from North Atlantic Europe, the Caribbean region and the Gulf of California (Mexico) were sequenced and two datasets were built, one for the subfamily Lithophylloideae and one for the Melobesioideae. Our results suggest the utility of cox2-3 spacer as barcoding marker for coralline algae with a slight variation in the barcode gap depending in the way gaps in the alignment are treated. Analyses on both datasets found a barcode gap or separation between intra and interspecific divergence (p distance and ABGD analysis) while some inconsistencies were evident when the results were compared with morphology-based classification. Using the cox2-3 spacer region, the morphospecies Lithophyllum margaritae from the Gulf of California revealed the existence of two well-supported clades, with the possibility of respectively five and two additional species; haplotype networks for Phymatolithon calcareum and P. purpureum revealed similar patterns when Mediterranean and NW Europe specimens were analysed, and P. calcareum was shown to consist of a single population in NW Europe. Based on our analyses the marker cox2-3 spacer has strong potential applications for studies of phylogeography and DNA barcoding in coralline algae after understanding its variation.

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Maneveldt, Gavin W., So Young Jeong, Tae Oh Cho, Jeffery R. Hughey und Paul W. Gabrielson. „Reassessment of misapplied names, Phymatolithon ferox and P. repandum (Hapalidiales, Corallinophycidae, Rhodophyta) in South Africa, based on DNA sequencing of type and recently collected material“. Phycologia 59, Nr. 5 (21.08.2020): 449–55. http://dx.doi.org/10.1080/00318884.2020.1800298.

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Nash, Merinda C., und Walter Adey. „Multiple phases of mg-calcite in crustose coralline algae suggest caution for temperature proxy and ocean acidification assessment: lessons from the ultrastructure and biomineralization in Phymatolithon (Rhodophyta, Corallinales)1“. Journal of Phycology 53, Nr. 5 (07.08.2017): 970–84. http://dx.doi.org/10.1111/jpy.12559.

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Mendoza, M. L., und J. Cabioch. „Étude comparée de la reproduction de Phymatolithon calcareum (Pallas) Adey & McKibbin et Lithothamnion corallioides (P. & H. Crouan) P. & H. Crouan (Corallinales, Rhodophyta), et reconsidérations sur la définition des genres“. Canadian Journal of Botany 76, Nr. 8 (1998): 1433–45. http://dx.doi.org/10.1139/cjb-76-8-1433.

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Kittle, Ronald P., Joseph L. Richards, Thomas Sauvage, Daniela Gabriel, William E. Schmidt und Suzanne Fredericq. „A new species of Phymatolithon Foslie, P. abuqirensis (Hapalidiaceae, Hapalidiales), from Mediterranean Egypt“. Frontiers in Marine Science 9 (10.08.2022). http://dx.doi.org/10.3389/fmars.2022.922389.

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Phymatolithon Foslie is one of the most studied and ecologically important genera of crustose coralline algae (CCA) due to their dominant abundance in various marine ecosystems worldwide. The taxonomy of the genus is complex and has been revised and updated many times based on morphological and molecular analyses. We report on a crustose coralline algal species collected in June 2011 via snorkeling in the subtidal zone along the beach Abu Qir on the Mediterranean coast of Egypt, as part of a larger macroalgal diversity survey in the region. The species shows significant sequence divergences (3.5%–14.8% in rbcL; 2.9%–11% in psbA) from other closely related Phymatolithon taxa. Morpho-anatomically, this species possesses the characters considered collectively diagnostic of the genus Phymatolithon, namely, thalli non-geniculate epithelial cells and non-photosynthetic and domed-shaped meristematic cells, usually as short with progressive elongation of their perithallial derivatives. Based on molecular and morphological analyses, we determined that these specimens encompass a new, distinct species that we herein name Phymatolithon abuqirensis. Including this new species, the total number of described Phymatolithon species found in the Mediterranean Sea is now six.

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Maneveldt, Gavin W., So Young Jeong, Jeffery R. Hughey und Paul W. Gabrielson. „Phymatolithopsis acervata comb. nov., and P. roseola sp. nov. (Hapalidiales, Rhodophyta) from South Africa with a comment on infraordinal classification“. Botanica Marina, 29.04.2024. http://dx.doi.org/10.1515/bot-2023-0109.

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Abstract Phymatolithon acervatum is an encrusting, non-geniculate coralline alga from South Africa. While morpho-anatomical details of the species are well documented, no genetic analyses have been performed on P. acervatum. Here, we analyzed rbcL and psbA gene sequences, and they showed that two species were passing under the name Phymatolithon acervatum in South Africa. A partial rbcL sequence from the lectotype of Lithothamnion acervatum, basionym of P. acervatum, showed to which species the specific epithet applies, and furthermore that both species belong in Phymatolithopsis. We transfer Phymatolithon acervatum to Phymatolithopsis, as Phymatolithopsis acervata comb. nov., and propose Phymatolithopsis roseola sp. nov. These species overlap in morpho-anatomy, habitat and distribution and can only be distinguished based on DNA sequences. Previous misinterpretations of conceptacle development are corrected for species of Phymatolithopsis. The main character used to define the family Mesophyllumaceae is shown to have arisen several times in independent lineages in the order Hapalidiales. At present, only one family, Hapalidiaceae, thus merits recognition in the Hapalidiales.

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Yáñez, Juan Lugilde, Ignacio Bárbara, Marcos Rubal, Puri Veiga, Débora Borges, Isabel Sousa-Pinto und Viviana Peña. „Nuevas citas y correcciones de algas coralinas (Corallinophycidae, Rhodophyta) para el noroeste ibérico (Galicia y norte de Portugal).“ Nova Acta Científica Compostelana, 18.04.2021, 29–45. http://dx.doi.org/10.15304/nacc.id7367.

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Las algas rojas coralinas conforman un grupo bentónico diverso en el noroeste ibérico, el cual ha sido revisitado en el contexto de una reciente tesis doctoral. En el presente trabajo, se aportan datos para 22 especies, siendo 9 de ellas (Harveylithon samoënse, Hydrolithon boreale, H. cf. sargassi, Lithophyllum cf. crouaniorum, Pneophyllum cf. confervicola, P. coronatum, P. cf. limitatum, P. cf. myriocarpum y Titanoderma pustulatum var. confine) nuevas citas para Galicia. Por otra parte, las 8 especies Hydrolithon boreale, Lithophyllum bathyporum. L. cf. crouaniorum, Mesophyllum expansum, Pneophyllum cf. myriocarpum, Titanoderma corallinae, T. laminariae y T. pustulatum var. confine son novedad para Portugal continental y Phymatolithon lamii para norte de Portugal. Paralelamente, se dan a conocer 14 nuevas citas provinciales y 8 segundas citas provinciales. También se excluye Lithophyllum duckerae y Phymatolithon purpureum de la flora del Atlántico ibérico.

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Lei, Xinming, Lei Jiang, Youfang Sun, Yuyang Zhang, Guowei Zhou, Jianhui Yang, Jiansheng Lian und Hui Huang. „Six thallus surface types of coralline algae with descriptions of two new records of Amphiroa beauvoisii and Neogoniolithon setchellii in Sanya reef, China“. Journal of Marine Science 2, Nr. 2 (30.06.2020). http://dx.doi.org/10.30564/jms.v2i2.1822.

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Coralline algae are globally distributed calcifying species and play critical ecological roles to marine ecosystems by contributing significantly to their structural complexity and diversity. Thallus surface types of historical samples in Sanya coral reef reserve were studied based on the scanning electron microscope (SEM) method. Our results show six thallus surface types within the study area: Corallina-type, Jania-type, Leptophytum-type, Phymatolithon-type, Pneophyllum-type, and Spongites-type. The Phymatolithon-type is the dominant surface type in Sanya reefs. Two new record species in the region are described: Amphiroa beauvoisii and Neogoniolithon setchellii. Although thallus surface types provide useful diagnostics characters for distinguishing coralline algae at tribe or subfamily level, species identification needs to refer to the reproductive features. This is the first surface study of coralline algae in the South China Sea. This result provides the baseline data needed for the monitoring and management of reef-building organisms of coral reef in China.

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Kaleb, Sara, Annalisa Falace und William Woelkerling. „Phymatolithon lamii (Hapalidiaceae, Corallinales, Rhodophyta): a first report for the Mediterranean Sea“. Botanica Marina 55, Nr. 4 (01.01.2012). http://dx.doi.org/10.1515/bot-2012-0141.

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Millson, C., und B. L. Moss. „Ultrastructure of the Vegetative Thallus of Phymatolithon lenormandii (Aresch. in J. Ag.) Adey“. Botanica Marina 28, Nr. 3 (1985). http://dx.doi.org/10.1515/botm.1985.28.3.123.

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Schubert, Nadine, Rui Santos und João Silva. „Living in a Fluctuating Environment Increases Tolerance to Marine Heatwaves in the Free-Living Coralline Alga Phymatolithon lusitanicum“. Frontiers in Marine Science 8 (23.12.2021). http://dx.doi.org/10.3389/fmars.2021.791422.

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Recently, increased attention is being paid to the importance of environmental history in species’ responses to climate-change related stressors, as more variable and heterogeneous environments are expected to select for higher levels of plasticity in species tolerance traits, compared to stable conditions. For example, organisms inhabiting environments with highly fluctuating thermal regimes might be less susceptible to the increasing frequency and intensity of marine heatwaves (MHWs). In this study, we assessed the metabolic and calcification responses of the rhodolith-bed forming Phymatolithon lusitanicum, from a coastal region that is strongly influenced by frequent changes between upwelling and downwelling conditions, to a simulated MHW scenario, with and without prior exposure to a moderate thermal stress. This allowed determining not only the influence of the species’ long-term thermal history on its resilience against MHWs, but also the rhodoliths capacity for short-term thermal stress memory and its importance during posterior MHW-exposure. Our findings indicate that the rhodoliths experienced negative impacts on daily net primary production (DNP) and calcification (DNC) during the MHW. The effect on the former was only temporary at the beginning of the MHW, while DNC was highly impacted, but exhibited a quick recovery after the event, suggesting a high resilience of the species. Furthermore, prior exposure to a moderate temperature increase, such as those occurring frequently in the natural habitat of the species, mitigated the effects of a subsequent MHW on DNP, while promoting a faster recovery of DNC after the event. Thus, our findings (1) support the hypothesis that benthic organisms living in nearshore habitats may benefit from the natural short-term temperature fluctuations in these environments with an increased resistance to MHW impacts and (2) provide first-time evidence for thermally induced stress memory in coralline algae.

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Aguirre, Julio, und Juan C. Braga. „Middle Miocene (Serravallian) rhodoliths and coralline algal debris in carbonate ramps (Betic Cordillera, S Spain)“. Frontiers in Earth Science 10 (26.08.2022). http://dx.doi.org/10.3389/feart.2022.958148.

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Serravallian (middle Miocene) coralline algal assemblages at the southern margin of the Guadalquivir Basin (southern Spain) occur as rhodoliths preserved in situ or very close to their growth habitats (autochthonous–parautochthonous assemblages) and also as reworked remains (allochthonous assemblages). The former assemblages consist of spherical rhodoliths built up by encrusting to warty plants and also of large fragments of branches, whereas the latter are mostly unrecognizable small fragments occurring in channeled packstone–grainstone beds. In both cases, the most abundant components are members of the order Hapalidiales (Mesophyllum roveretoi, Mesophyllum sp., Lithothamnion ramosissimum, and less frequently Phymatolithon group calcareum and Lithothamnion group corallioides). Laminar growths of Lithoporella minus and branches of Spongites group fruticulosus and Sporolithon sp. occur very rarely. There are also anecdotal records of Subterraniphyllum thomasii, extending its upper stratigraphic range up to the Serravallian in the western Tethys. The autochthonous–parautochthonous coralline algal assemblages formed in a middle ramp, at several tens of meters of water depth, as suggested by the dominance of Hapalidiales. The allochthonous assemblages represent fragments of coralline algae derived from the middle ramp and redeposited in deeper settings, most likely the outer ramp, due to storm-generated currents.

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Liu, Li-Chia, und Showe-Mei Lin. „Systematic revision of the non-geniculate coralline genus Phymatolithon (Hapalidiales, Rhodophyta) from Taiwan, including three new species“. Phycologia, 29.05.2023, 1–13. http://dx.doi.org/10.1080/00318884.2023.2202533.

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Pardo, Cristina, Marie-Laure Guillemin, Viviana Peña, Ignacio Bárbara, Myriam Valero und Rodolfo Barreiro. „Local Coastal Configuration Rather Than Latitudinal Gradient Shape Clonal Diversity and Genetic Structure of Phymatolithon calcareum Maerl Beds in North European Atlantic“. Frontiers in Marine Science 6 (29.03.2019). http://dx.doi.org/10.3389/fmars.2019.00149.

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DEY, Rikee, Daniela BASSO, Arindam CHAKRABORTY, Lopamudra ROY, Ajoy Kumar BHAUMIK und Amit K. GHOSH. „Rhodolith-forming coralline red algae in the CaCO3 biofactory — A case study from the Serravallian of tropical northeastern Indian Ocean“. Comptes Rendus Palevol, Nr. 26 (18.08.2023). http://dx.doi.org/10.5852/cr-palevol2023v22a26.

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Rhodolith-forming non-geniculate coralline red algae have been recorded from the Long Formation, exposed in four different outcrops at Little Andaman Island (Hut Bay) in the northeastern Indian Ocean. The non-geniculate corallines are represented by species of Sporolithon Heydrich, 1897, Mesophyllum Lemoine, 1928, Lithothamnion Heydrich, 1897, Phymatolithon Foslie, 1898, Lithoporella (Foslie) Foslie, 1909, Spongites Kützing, 1841, Neogoniolithon Setchell & Mason, 1943 and Lithophyllum Philippi, 1837. The algal assemblages also include geniculate corallines belonging to the genera Amphiroa Lamouroux, 1812 and Corallina Linnaeus, 1758. In addition, larger benthic foraminifers and few planktonic foraminifers also have been identified in thin section analysis. Based on the earlier study carried out on planktonic foraminifers, the Long Formation has been dated as Serravallian (late middle Miocene) and chronostratigraphically, the Long Formation has been included in the Ongeian Regional Stage. In the rhodolith-forming non-geniculate corallines, various growth forms and taphonomic features have been recognized. Diagenesis affected the studied material by micritization, cementation and compaction. The four outcrops are dominated by bioclastic wackestone and packstone composed of coralline red algae, benthic and planktonic foraminifers, echinoid spines and unidentified coral fragments. The rhodolith-forming coralline red algae, the growth forms and taphonomic features in non-geniculate corallines and the characteristic benthic foraminifers are indicative of a moderate energy depositional environment. This study indicates that the carbonate production was considerably high during the Serravallian of the tropical northeastern Indian Ocean.

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