scholarly journals Identification of New Sub-Fossil Diatoms Flora in the Sediments of Suncheonman Bay, Korea

2021 ◽  
Vol 9 (6) ◽  
pp. 591
Author(s):  
Mirye Park ◽  
Sang Deuk Lee ◽  
Hoil Lee ◽  
Jin-Young Lee ◽  
Daeryul Kwon ◽  
...  
Keyword(s):  
Coastal Wetland ◽  
New Records ◽  
Core Sample ◽  
Ramsar Convention ◽  
High Species Diversity ◽  
Epipelic Diatoms ◽  
Sedimentary Core ◽  
Geochemical Studies ◽  
Ecological Habitats ◽  
Fossil Diatoms

Suncheonman Bay, Korea’s most representative estuary, is an invasive coastal wetland composed of 22.6 km2 of tidal flats surrounded by the Yeosu and Goheung Peninsulas. In January 2006, this region was registered in the Ramsar Convention list in Korea, representing the first registered wetland. Estuaries are generally known to have high species diversity. In particular, several studies have been conducted on planktonic and epipelic diatoms as primary producers. Suncheonman Bay has already been involved in many biological and geochemical studies, but fossil diatoms have not been evaluated. Therefore, we investigated fossil diatoms in Suncheonman Bay and introduced sub-fossil diatoms recorded in Korea. One sedimentary core has been extracted in 2018. We identified 87 diatom taxa from 52 genera in the SCW03 core sample. Of these, six species represent new records in Korea: Cymatonitzschia marina, Fallacia hodgeana, Navicula mannii, Metascolioneis tumida, Surirella recedens, and Thalassionema synedriforme. These six newly recorded diatom species were examined by light microscopy and scanning electron microscopy. The ecological habitats for all the investigated taxa are presented.

The geographic distribution of echiurans in the Atlantic Ocean (Phylum Echiura)

Zootaxa ◽  
2009 ◽  
Vol 2222 (1) ◽  
pp. 17-30 ◽  
Author(s):  
RAMLALL BISESWAR
Keyword(s):  
Atlantic Ocean ◽  
New Records ◽  
Single Species ◽  
The North ◽  
The Family ◽  
High Species Diversity ◽  
Biogeographic Regions ◽  
Total Fauna ◽  
The Tropics ◽  
World Fauna

This report provides a checklist of the echiurans from the Atlantic Ocean and maps their distribution. Investigations on the taxonomy of this group since the publication of the monograph by Stephen and Edmonds (1972) on the phyla Sipuncula and Echiura have yielded two new genera, 12 new species and 13 new records. Currently the echiuran fauna of the Atlantic comprises three families, 25 genera and 63 species. The family Bonelliidae contains 35 species in 18 genera; the Echiuridae is represented by six genera and 27 species, and the Urechidae by a single species Urechis chilensis (Müller). This study shows that the Atlantic has a relatively high species diversity, comprising about 38% of the known world fauna. Bonelliids alone comprise about 56% of the echiuran fauna of the Atlantic. An analysis of distribution is given in relation to general biogeographic regions and faunistic provinces. Dichotomous keys for the identification of genera and species of echiurans from the Atlantic is provided. The North Temperate component is the richest and most diverse, making up about 68% of the Atlantic echiuran fauna; 25 species have been recorded from within the tropics; and the South Temperate component is poorly represented, with only about 19% of the total fauna. The cosmopolitan component is also poorly represented, with only four species, so far, known. Thirteen species of echiurans are provisionally considered to be endemic to the Atlantic. Members of the Echiuridae are usually shallow-water inhabitants of intertidal and subtidal zones while bonelliids exhibit a higher species richness on deeper bottoms of all oceans, mostly at depths of 1000–6000 m in the Atlantic.

scholarly journals Biota of coastal wetlands of Praia da Vitória (Terceira Island, Azores): Part 2 - Bryophytes

2019 ◽  
Vol 7 ◽  
Author(s):  
Rosalina Gabriel ◽  
César Pimentel ◽  
David Claro ◽  
Mariana Brito ◽  
Javier Díaz-Castillo ◽  
...  
Keyword(s):  
Ecological Restoration ◽  
New Taxa ◽  
Coastal Wetlands ◽  
Coastal Wetland ◽  
New Records ◽  
Biodiversity Assessment ◽  
Moss Species ◽  
Extensive Survey ◽  
Before And After ◽  
European Distribution

During the LIFE-CWR project "Ecological Restoration and Conservation of Praia da Vitória Coastal Wet Green Infrastructures", there was the opportunity to undertake a systematic record of bryophytes at Paul da Praia da Vitória (PPV), Paul do Belo Jardim (PBJ) and Paul da Pedreira do Cabo da Praia (PPCP), three coastal wetland areas of Praia da Vitória (Terceira, Azores, Portugal). The objective of the study was to perform a biodiversity assessment, comparing the three sites at two different moments, before and after the implementation of several conservation measures. This project also contributed to improve the knowledge of Azorean bryophyte diversity at both local and regional scales, including the recording of two new taxa for the Azores and three new taxa for Terceira Island. This paper reports the results of the first extensive survey of bryophyes of the three coastal wetland areas of Praia da Vitória (Terceira Island, Azores, Portugal). The identification of a total of 504 samples, 240 collected in 2013 and 2016 (before the LIFE-CWR intervention) and 265 in 2017 and 2018 (after the intervention), resulted in a list of 58 species of bryophytes (one hornwort, eight liverworts and 48 mosses). These include two new records for the Azores (Bryumklinggraeffii, Ptychostomumbornholmense), three new records for Terceira Island (Bryumtenuisetum, Dicranellahowei, Trichostomumcrispulum) and at least 15 new records for the municipality of Praia da Vitória (e.g., Cephaloziellahampeana). Some species that had not been recorded on the island since 1937 (e.g., Fissidenscrispus) were collected during this study, as well as a Macaronesian endemic liverwort (Radulawichurae), an Iberian-Macaronesian liverwort (Frullaniaazorica) and a moss species with European distribution (Ptychomitriumnigrescens). From the recorded species, only one moss (Leptophascumleptophyllum), of subtropical origin, is considered invasive in Europe.

scholarly journals Study Clastic Sediments and Evaporite Deposits’ Changes in the Sedimentary Core Lake Maharlou, Iran

2016 ◽  
Vol 10 (4) ◽  
pp. 1 ◽  
Author(s):  
Abdolah Safe ◽  
Fatemeh Sabokkhiz ◽  
Mohamad Hosein Ramesht ◽  
Morteza Djamali ◽  
Abdolmajid Naderi Beni
Keyword(s):  
Magnetic Susceptibility ◽  
Water Level ◽  
Lake Water ◽  
Core Sample ◽  
Water Level Fluctuations ◽  
Gravimetric Analysis ◽  
Zagros Mountains ◽  
Lake Water Level ◽  
The Core ◽  
Sedimentary Core

The continental environments, lakes are proper for deposition locations of evaporites. Evaporite minerals are formed wherever the evaporation rate is more than incoming water to the basin. In this article the evaporate deposits (Calcite, Gypsum and Halite) are studied in a sedimentary core of Lake Maharlou, Zagros Mountains, South of Iran. The core sample treated for getting Magnetic Susceptibility values along with the core as well as basic sedimentological data including grain size, Total Organic Matter and carbonate contents. NaCl is determin ed by gravimetric analysis. Loss on Ignition is applied to measure and estimate the amount of (OC), (Ca) and (SO4) mineralogy of which is determined by SEM method. The exists a direct relation between evaporation deposit formation of lake water level reduction. Accordingly, the change in the sediment stratum indicating the level of evaporations. The results indicate a lower extant of gypsum than Ca and NaCl. The sequence of layers principle, changes in the shoreline (lake water level fluctuations) with respect to stratum zonation. Magnetic susceptibility level is directly related to the Silt layer thickness but also there is an indirect relation with the level of organically rich sediments’ occurrence and abundance.

scholarly journals New records of aphid species (Hemiptera: Aphididae) in Greece

2017 ◽  
Vol 21 (2) ◽  
pp. 54 ◽  
Author(s):  
A. P. Papapanagiotou ◽  
M. Nathanailidou ◽  
M. Taylor ◽  
K. D. Zarpas ◽  
K. Voudouris ◽  
...  
Keyword(s):  
Mediterranean Basin ◽  
Host Plants ◽  
New Records ◽  
Aphid Species ◽  
Climatic Conditions ◽  
Northern Greece ◽  
Southern Central ◽  
Ecological Habitats ◽  
Of Greece ◽  
The Mediterranean Basin

 Several papers have been published on aphid fauna in Greece during the last two decades, but the number of recorded species is still low compared to other European countries, including some from the Mediterranean basin. In this context, we collected aphids from various host-plants and regions in southern, central and northern Greece characterized by diverse flora, climatic conditions and ecological habitats. In total, 128 aphid species belonging to 55 genera and six subfamilies were collected on 200 host-species. Most of the species dominated the subfamily Aphidinae (especially tribes Macrosiphini and Aphidini). Among the species collected, 18 were new records in Greece. The present work improves our knowledge regarding the aphid fauna of Greece and suggests that the number of recorded species could increase further if additional studies were undertaken.

scholarly journals Diversity and distribution of ferns in forest over limestone in Cebu Island Key Biodiversity Areas (KBAs), Philippines

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Edgardo Lillo ◽  
ARCHIEBALD B. MALAKI ◽  
STEVE MICHAEL T. ALCAZAR ◽  
RAAMAH ROSALES ◽  
BERNARDO R. REDOBLADO ◽  
...  
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Natural Resources ◽  
New Records ◽  
Transect Line ◽  
Relative Value ◽  
High Species Diversity ◽  
Fern Species ◽  
Very High ◽  
Biodiversity Information

Abstract. Lillo EP, Malaki AB, Alcazar SMT, Rosales R, Redoblado BR, Pantinople E, Nuevo RU, Cutillar RC, Almirante A, Buot IE Jr. 2020. Diversity and distribution of ferns in forest over limestone in Cebu Island Key Biodiversity Areas (KBAs), Philippines. Biodiversitas 21: 413-421. Three forest areas of Cebu Island, Philippines were recognized as Key Biodiversity Areas (KBAs) by Department of Environment and Natural Resources [DENR], Philippines based on the criteria of vulnerability and irreplaceability, namely Nug-as of Alcoy, Palinpinon Range of Dalaguete, and Mt. Lantoy of Argao. The study aimed to assess the composition, diversity, and distribution of ferns in the aforementioned KBA's. Quadrat at 20 m x 20 m was established within the 2000 m transect line at an interval of 200 m. Result showed a total of 50 species, categorized into 15 families and 29 genera for 30 quadrats. Twelve species were considered as new records on Cebu. Thirteen species were recorded in both Mt. Lantoy and Nug-as forest KBA’s, but absent in Palinpinon range. While 6 species were recorded as unique to Nug-as forest. Nug-as forest and Mt. Lantoy showed a relative value of very high species diversity. Nug-as forest and Mt. Lantoy KBA forming into one cluster and Palinpinon range proved to have a distinct fern species composition, and form another cluster. Local government units (LGU) in every KBA need to recognize the necessity of biodiversity information in their localities that would facilitate information sharing and awareness, hence enhancing protection and conservation of unique biodiversity, since they are at the forefront of local action.

scholarly journals Geochemical Studies of a 200-meter Core Sample from Lake Biwa. II

1973 ◽  
Vol 49 (3) ◽  
pp. 223-228
Author(s):  
Tadashiro KOYAMA ◽  
Shoji HORIE
Keyword(s):  
Lake Biwa ◽  
Core Sample ◽  
Geochemical Studies

scholarly journals On the presence of elusive sea slugs and snails in the western Mediterranean (Mollusca: Gastropoda): new records

2020 ◽  
Author(s):  
Xavier Salvador ◽  
Robert Fernández-Vilert ◽  
Juan Moles
Keyword(s):  
Mediterranean Basin ◽  
New Records ◽  
Western Mediterranean ◽  
Mediterranean Coast ◽  
Online Database ◽  
Ecological Information ◽  
Catalan Coast ◽  
Sea Slugs ◽  
High Species Diversity ◽  
The Mediterranean Basin

AbstractCitizen science provides us with much information about charismatic taxa such as the opisthobranchs, thus contributing enormously to enlarging the geographic distribution of species. This study collects new records of elusive sea slugs and snails in the Western Mediterranean coast (especially in the Catalan coast and the French Mediterranean coast) and contributes to new ecological information regarding phenology, diet, and behaviour. Out of the 36 species reported here, 20 correspond to new records in the Catalan coast (NE Spain), three are new records of pelagic pteropods for the Spanish coast, and 10 other species are new records for the French Mediterranean coast. All records have been registered at the online database of the NGO named Catalan Opisthobranch Research Group (GROC). This study highlights the importance of sampling at night and, especially, in shallow, often-understudied waters, which usually gather high species diversity. We believe the high-quality pictures and related species’ information will serve future researchers and divers find and recognize these species in the Mediterranean basin.

scholarly journals The composition and new records of micro- and mesophytoplankton near the Vitória-Trindade Seamount Chain

2016 ◽  
Vol 16 (3) ◽  
Author(s):  
Karoline Magalhães Ferreira Lubiana ◽  
Camilo Dias Júnior
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
New Records ◽  
Marine Phytoplankton ◽  
Phytoplankton Species ◽  
Species Frequency ◽  
Phytoplankton Species Composition ◽  
High Species Diversity ◽  
Seamount Chain

Abstract In spite of the length of the Brazilian coastline, studies of marine phytoplankton species in offshore areas have been largely neglected. Regarding phytoplankton species composition, the aim was to assess biodiversity status, species frequency, and the similarities at different sites along the Vitoria-Trindade Seamount Chain. Phytoplankton net samples were analyzed. One hundred and seventy five infrageneric taxa were identified. They represented four phyla, viz., Cyanobacteria, Bacillariophyta, Dinophyta, and Ochrophyta. Dinophyta was the most diverse, and its genus Tripos the largest contributor. This genus also represented more than half of the most common taxa in the sampled area. Thirty-five new infrageneric taxa were recorded, 12 of which are new reports for Brazil. Neritic stations assemblages were markedly different from those of seamounts and deep offshore. The high species diversity, especially among dinoflagellates can be considered typical of tropical oligotrophic waters. The new records demonstrate the gap in knowledge of phytoplankton biodiversity in Brazil.

scholarly journals Biota from the coastal wetlands of Praia da Vitória (Terceira, Azores, Portugal): Part 1 - Arthropods

2018 ◽  
Vol 6 ◽  
pp. e27194 ◽  
Author(s):  
Paulo Borges ◽  
Rosalina Gabriel ◽  
César Pimentel ◽  
Mariana Brito ◽  
Artur Serrano ◽  
...  
Keyword(s):  
Exotic Species ◽  
Endemic Species ◽  
Coastal Wetlands ◽  
Coastal Wetland ◽  
Sampling Methods ◽  
New Records ◽  
Biodiversity Assessment ◽  
Arthropod Species ◽  
Before And After ◽  
Rare Endemic

During a LIFE research project aiming at the implementation of the conservation of the habitats and restoration of coastal wetland areas of Praia da Vitória (Terceira, Azores, Portugal), there was the opportunity undertake a systematic record of several groups of arthropods in three wetland areas: Paul da Praia da Vitória (PPV), Paul do Belo Jardim (PBJ) and Paul da Pedreira do Cabo da Praia (PPCP). The objective of the study was to perform a rapid biodiversity assessment, comparing the three sites in two different years, before and after the implementation of several conservation measures. This project also contributed to improve the knowledge of Azorean arthropod diversity at both local and regional scales, including new taxa for Terceira island and new records for Azores. Taking into consideration those aims, a set of standardised sampling methods were performed, inspired by the COBRA protocol originally developed for spiders. A total of 15,810 specimens belonging to 216 arthropod species and subspecies were collected. Beetles (Insecta, Coleoptera) and spiders (Araneae) dominated, with 81 and 51 taxa, respectively. Two beetle families dominated, Staphylinidae and Curculionidae with, respectively, 22 and 17 species and subspecies. Exotic species were also dominant (132 species and subspecies), the Azorean endemics being restricted to only eight taxa. The remaining 76 species and subspecies are native non-endemic. Two rare endemic species were found with relatively sustainable populations, the Azores Cone-head Conocephaluschavesi (Orthoptera, Tettigoniidae) and the true weevil Drouetiusoceanicusoceanicus (Coleoptera, Curculionidae). A total of six species are novel for the Azores, five exotic (Blediusunicornis, Carpelimuszealandicus, Oenopiadoublieri, Sitonahispidulus, Trichiusaimmigrata) and one possibly native (Pyrrhocorisapterus). An additional 15 taxa are novel for Terceira island, ten exotic (Cheiracanthiummildei, Cylindroiuluslatestriatus, Eumodicogryllusbordigalensis, Nemobiussylvestris, Pissodescastaneus, Psyllipsocusramburi, Trachyzeloteslyonneti, Trigonnidiumcicindeloides, Tychiuscuprifer, Zelotestenuis) and five native (Aegialiaarenaria, Oxypodalurida, Platycleissabulosa, Plinthisusbrevipennis, Tachyuradiabrachys).

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