scholarly journals Supplemental Material: New multicellular marine macroalgae from the early Tonian of northwestern Canada

2021 ◽  
Author(s):  
Katie Maloney ◽  
et al.
Keyword(s):  
Marine Macroalgae ◽  
Geological Setting ◽  
Morphologic Characteristic

Detailed description of methods, geological setting, Proterozoic life, and additional figures for each morphologic characteristic.<br>

scholarly journals Supplemental Material: New multicellular marine macroalgae from the early Tonian of northwestern Canada

2021 ◽  
Author(s):  
Katie Maloney ◽  
et al.
Keyword(s):  
Marine Macroalgae ◽  
Geological Setting ◽  
Morphologic Characteristic

Detailed description of methods, geological setting, Proterozoic life, and additional figures for each morphologic characteristic.<br>

BRAZILIAN IRON FORMATIONS AND THEIR GEOLOGICAL SETTING

2000 ◽  
Vol 30 (2) ◽  
pp. 274-278 ◽  
Author(s):  
CARLOS ALBERTO ROSIÈRE ◽  
FARID CHEMALE JR
Keyword(s):  
Geological Setting ◽  
Iron Formations

The Geological Setting of Palaeolithic Sites at Tabaqat Fahl, Jordan.

Paléorient ◽  
1992 ◽  
Vol 18 (2) ◽  
pp. 31-44 ◽  
Author(s):  
Phillip G. Macumber
Keyword(s):  
Geological Setting

Struktur Makroalga Pada Ekosistem Lamun Di Kecamatan Tabukan Selatan, Kabupaten Kepulauan Sangihe, Sulawesi Utara (Structure of Macroalgae in Seagrass Ecosystems at South Tabukan District, Sangihe Islands Regency, North Sulawesi

2019 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Irawaty Mertosono ◽  
Ratna Siahaan ◽  
Pience Maabuat
Keyword(s):  
Sampling Technique ◽  
Marine Macroalgae ◽  
Line Transect ◽  
Land Conversion ◽  
Importance Value Index ◽  
Importance Value ◽  
North Sulawesi ◽  
Sea Transportation ◽  
Seagrass Ecosystems ◽  
Biodiversity Decline

Struktur Makroalga Pada Ekosistem Lamun Di Kecamatan Tabukan Selatan, Kabupaten Kepulauan Sangihe, Sulawesi Utara(Structure of Macroalgae in Seagrass Ecosystems at South TabukanDistrict, Sangihe Islands Regency, North Sulawesi) Irawaty A. Mertosono1), Ratna Siahaan1*) Pience V. Maabuat1)1)Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sam Ratulangi, Manado 95115*Email korespondensi:[email protected] Diterima  15 Februari 2019, diterima untuk dipublikasi 28 Februari  2019 Abstrak Makroalga laut merupakan tumbuhan laut yang tidak memiliki akar, batang, maupun daun sejati. Kegiatan manusia berupa pemanfaatan makroalga, konversi lahan, dan transportasi laut dapat menjadi penyebab penurunan biodiversitas makroalga. Tujuan penelitian ini adalah untuk menganalisis struktur dan distribusi makroalga pada ekosistem lamun di Kecamatan Tabukan Selatan, Kabupaten Kepulauan Sangihe, Sulawesi Utara. Lokasi penelitian di tiga stasiun penelitian yaitu Pantai Karurung - Desa Salurang, Pantai Palareng - Desa Palareng dan Pantai Galoghong – Desa Batuwingkung. Penelitian dilakukan pada November-Desember 2018 dengan pengambilan sampel menggunakan metode garis transek (line transect) dengan teknik pencuplikan kuadrat. Makroalga yang ditemukan sebanyak 36 spesies yang terdiri atas 25 spesies Divisi Chlorophyta, sembilan (9) spesies Divisi Rhodophyta dan dua (2) spesies Divisi Phaeophyta. Makroalga Bornetella nitida memiliki Indeks Nilai Penting 39, 24% mendominasi di lokasi penelitian. Keanekaragaman Shannon-Wiener (H’) spesies makroalga di Stasiun I (H’:3,02) tergolong tinggi sedangkan pada Stasiun II (H’:2,86)  dan Stasiun III (H’:2,63) tergolong sedang. Secara keseluruhan, keanekaragaman spesies makroalga di Kecamatan Tabukan Selatang tergolong tinggi (H’:3,00). Kata kunci:   struktur makroalga, Pantai Karurung, Pantai Palareng, Pantai Galoghong,Tabukan Selatan Abstract Marine macroalgae are marine plant-like organisms that has no true roots, stems, or leaves. The human ativities of macroalgae utilization, land conversion, and sea transportation can cause of macroalgae biodiversity decline. The purpose of this study was to analyze the structure and distribution of macroalgae in seagrass ecosystems at South Tabukan District, Sangihe Islands Regency, North Sulawesi. The research locations were at three research stations, i.e. Karurung Beach - Salurang Village, Palareng Beach - Palareng Village and Galoghong Beach - Batuwingkung Village. The study was conducted in November-December 2018 with line transect method sampling and quadrate sampling technique. Macroalgae were 36 species consists of 25 species of Chlorophyta Division, nine (9) species of Rhodophyta Division and two (2) species of Phaeophyta Division. Macroalga Bornetella nitida had Importance Value Index 39.24% that dominated research locations. The Shannon-Wiener biodiversity Index (H’) of macroalgae species at Station I (H': 3.02) was classified as high while Station II (H': 2.86) and Station III (H ': 2.63) were moderate. Overall, macroalgae species diversity at Tabukan Selatang District was high (H’: 3.00). Keywords: Macroalgae structure, Macroalgae distribution, Karurung Beach, Palareng Beach, Galoghong Beach, South Tabukan

Supplemental Material: The role of the westerlies and orography in Asian hydroclimate since the late Oligocene

2020 ◽  
Author(s):  
Xin Wang
Keyword(s):  
Model Simulation ◽  
Late Oligocene ◽  
Geological Setting

Detailed description of sample analyses, geological setting, model simulation, and the data presented in the paper.<br>

Geological setting and mineralization characteristics of the Tick Hill Gold Deposit, Mount Isa Inlier, Queensland, Australia

2021 ◽  
pp. 104288
Author(s):  
Truong X. Le ◽  
Paul H.G.M. Dirks ◽  
Ioan V. Sanislav ◽  
Jan M. Huizenga ◽  
Helen A. Cocker ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Mount Isa ◽  
Geological Setting

scholarly journals Assessing the Conversion of Various Nylon Polymers in the Hydrothermal Liquefaction of Macroalgae

Environments ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 34
Author(s):  
Sukanya Hongthong ◽  
Hannah S. Leese ◽  
Michael J. Allen ◽  
Christopher J. Chuck
Keyword(s):  
Nylon 6 ◽  
Hydrothermal Liquefaction ◽  
Marine Macroalgae ◽  
Fishing Gear ◽  
Third Generation ◽  
Conventional Agriculture ◽  
Fucus Serratus ◽  
Nylon 12 ◽  
Fuels And Chemicals ◽  
Real Challenge

Marine macroalgae offers a promising third generation feedstock for the production of fuels and chemicals, avoiding competition with conventional agriculture and potentially helping to improve eutrophication in seas and oceans. However, an increasing amount of plastic is distributed into the oceans, and as such contaminating macroalgal beds. One of the major plastic contaminants is nylon 6 derived from discarded fishing gear, though an increasing amount of alternative nylon polymers, derived from fabrics, are also observed. This study aimed to assess the effect of these nylon contaminants on the hydrothermal liquefaction of Fucus serratus. The hydrothermal liquefaction (HTL) of macroalgae was undertaken at 350 °C for 10 min, with a range of nylon polymers (nylon 6, nylon 6/6, nylon 12 and nylon 6/12), in the blend of 5, 20 and 50 wt.% nylon to biomass; 17 wt.% biocrude was achieved from a 50% blend of nylon 6 with F. serratus. In addition, nylon 6 completely broke down in the system producing the monomer caprolactam. The suitability of converting fishing gear was further demonstrated by conversion of actual fishing line (nylon 6) with the macroalgae, producing an array of products. The alternative nylon polymer blends were less reactive, with only 54% of the nylon 6/6 breaking down under the HTL conditions, forming cyclopentanone which distributed into the biocrude phase. Nylon 6/12 and nylon 12 were even less reactive, and only traces of the monomer cyclododecanone were observed in the biocrude phase. This study demonstrates that while nylon 6 derived from fishing gear can be effectively integrated into a macroalgal biorefinery, alternative nylon polymers from other sectors are too stable to be converted under these conditions and present a real challenge to a macroalgal biorefinery.

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