PANGAEA_993136 Potentially harmful microalgae in Kenya's coastal waters: species composition and abundances (2021/22) Oduor, Nancy Awuor; Moosdorf, Nils Potentially harmful microalgae in Kenya's coastal waters: species composition and abundances (2021/22) 2026-04-09 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993136 Investigator Nancy Awuor Oduor koduor2012@gmail.com Earth Science Event label Sample code/label LATITUDE LONGITUDE DEPTH, water Depth, water, top/minimum Depth, water, bottom/maximum DATE/TIME Location Type Site Site information Water volume, filtered Class Genus Species Category Cells, total Species, unique identification (Semantic URI) geoscientificInformation 1_Coast-General-Hospital_S10_A 1_Coast-General-Hospital_S10_B 1_Fort-Jesus_S08_A 1_Fort-Jesus_S08_B 1_Kenya-Meat-Commission_S12_A 1_Kenya-Meat-Commission_S12_B 1_Kenya-Meat-Commission_S12_C 1_Kenya-Navy_S03_A 1_Kilindini-Mouth_S06_A 1_Kilindini-Mouth_S06_B 1_Kilindini-Mouth_S06_C 1_Kipevu_S04_A 1_Kipevu_S04_B 1_Kipevu_S04_C 1_Kombani-RM_S13_A 1_Liwatoni_S05_A 1_Liwatoni_S05_B 1_Liwatoni_S05_C 1_Mwache-RM_S01_A 1_Mwache-RM_S01_B 1_Mwache-RM_S01_C 1_Tudor-Kilindini-Mouth_S07_A 1_Tudor-Kilindini-Mouth_S07_B 1_Tudor-Kilindini-Mouth_S07_C 1_Tudor-Water-Sports_S11_A 1_Tudor-Water-Sports_S11_B 10_Bandari-ya-Vipingo_0051_A 10_Community-Reef_S15_A 10_Community-Reef_S15_B 10_Kijangwani_0054_A 10_Kuruwitu-bandarini_0052_A 10_Mwanamia_0055_A 10_Nyamamba_0053_A 10_Pilani_0050_A 11_Coral-beach_0057_A 11_Coral-beach_0057_B 11_Kota-manange_0059_A 11_Kota-manange_0059_B 11_Nyali_0060_A 11_Nyali_0060_B 11_Pirates_0058_A 11_Pirates_0058_B 12_Barawa_0065_A 12_Barawa_0065_B 12_Chamba-cha-adam_0067_A 12_Chamba-cha-adam_0067_B 12_Fungu-la-Mvinjeni_0068_A 12_Fungu-la-Mvinjeni_0068_B 12_Jumba-Ruins_0066_A 12_Jumba-Ruins_0066_B 12_Kack-Land_0063_A 12_Kack-Land_0063_B 12_Kibuyuni_0061_A 12_Kibuyuni_0061_B 12_Paradise_0062_A 12_Paradise_0062_B 12_Sun-and-Sand_0064_A 12_Sun-and-Sand_0064_B 13_Kenya-Navy_S03_A 13_Kilindini-Mouth_S06_A 13_Kilindini-Mouth_S06_B 13_Kipevu_S04_A 13_Kipevu_S04_B 13_Liwatoni_S05_A 13_Liwatoni_S05_B 13_Liwatoni_S05_C 13_Mambome-RM_S02_A 13_Mambome-RM_S02_B 13_Mwache-RM_S01_A 13_Mwache-RM_S01_B 13_Tudor-Kilindini-Mouth_S07_A 13_Tudor-Kilindini-Mouth_S07_B 14_Coast-General-Hospital_S10_A 14_Coast-General-Hospital_S10_B 14_Coast-General-Hospital_S10_C 14_Fort-Jesus_S08_A 14_Fort-Jesus_S08_B 14_Fort-Jesus_S08_C 14_Kenya-Meat-Commission_S12_A 14_Kenya-Meat-Commission_S12_B 14_Kenya-Meat-Commission_S12_C 14_Kombani-RM_S13_A 14_Kombani-RM_S13_B 14_Kombani-RM_S13_C 14_Madobini_S09_A 14_Madobini_S09_B 14_Tsalu-River-Mouth_S14_A 14_Tsalu-River-Mouth_S14_B 14_Tudor-Water-Sports_S11_A 15_Coast-General-Hospital_S10_A 15_Coast-General-Hospital_S10_B 15_Fort-Jesus_S08_A 15_Fort-Jesus_S08_B 15_Kenya-Meat-Commission_S12_A 15_Kenya-Meat-Commission_S12_B 15_Kenya-Navy_S03_A 15_Kenya-Navy_S03_B 15_Kenya-Navy_S03_C 15_Kilindini-Mouth_S06_A 15_Kilindini-Mouth_S06_B 15_Kilindini-Mouth_S06_C 15_Kipevu_S04_A 15_Kipevu_S04_B 15_Kipevu_S04_C 15_Kombani-RM_S13_A 15_Kombani-RM_S13_B 15_Liwatoni_S05_A 15_Liwatoni_S05_B 15_Madobini_S09_A 15_Mambome-RM_S02_A 15_Mambome-RM_S02_B 15_Mwache-RM_S01_A 15_Mwache-RM_S01_B 15_Tudor-Kilindini-Mouth_S07_A 15_Tudor-Kilindini-Mouth_S07_B 15_Tudor-Kilindini-Mouth_S07_C 15_Tudor-Water-Sports_S11_A 15_Tudor-Water-Sports_S11_B 16_Coast-General-Hospital_S10_A 16_Coast-General-Hospital_S10_B 16_Fort-Jesus_S08_A 16_Fort-Jesus_S08_B 16_Fort-Jesus_S08_C 16_Kenya-Meat-Commission_S12_A 16_Kenya-Meat-Commission_S12_B 16_Kenya-Meat-Commission_S12_C 16_Kenya-Navy_S03_A 16_Kenya-Navy_S03_B 16_Kilindini-Mouth_S06_A 16_Kilindini-Mouth_S06_B 16_Kilindini-Mouth_S06_C 16_Kipevu_S04_A 16_Kipevu_S04_B 16_Kombani-RM_S13_A 16_Kombani-RM_S13_B 16_Liwatoni_S05_A 16_Liwatoni_S05_B 16_Liwatoni_S05_C 16_Madobini_S09_A 16_Madobini_S09_B 16_Mambome-RM_S02_A 16_Mambome-RM_S02_B 16_Mwache-RM_S01_A 16_Mwache-RM_S01_B 16_Tsalu-River-Mouth_S14_A 16_Tsalu-River-Mouth_S14_B 16_Tsalu-River-Mouth_S14_D 16_Tsalu-River-Mouth_S14_E 16_Tudor-Kilindini-Mouth_S07_A 16_Tudor-Kilindini-Mouth_S07_B 16_Tudor-Water-Sports_S11_A 16_Tudor-Water-Sports_S11_B 17_Coast-General-Hospital_S10_A 17_Coast-General-Hospital_S10_B 17_Fort-Jesus_S08_A 17_Fort-Jesus_S08_C 17_Kenya-Meat-Commission_S12_A 17_Kenya-Meat-Commission_S12_B 17_Kenya-Navy_S03_A 17_Kenya-Navy_S03_B 17_Kilindini-Mouth_S06_A 17_Kilindini-Mouth_S06_B 17_Kilindini-Mouth_S06_C 17_Kipevu_S04_A 17_Kipevu_S04_B 17_Kombani-RM_S13_A 17_Kombani-RM_S13_B 17_Liwatoni_S05_A 17_Liwatoni_S05_B 17_Liwatoni_S05_C 17_Madobini_S09_A 17_Madobini_S09_B 17_Mambome-RM_S02_A 17_Mambome-RM_S02_B 17_Mwache-RM_S01_A 17_Mwache-RM_S01_B 17_Tsalu-River-Mouth_S14_A-1 17_Tsalu-River-Mouth_S14_A-2 17_Tsalu-River-Mouth_S14_B-1 17_Tsalu-River-Mouth_S14_B-2 17_Tudor-Kilindini-Mouth_S07_A 17_Tudor-Kilindini-Mouth_S07_B 17_Tudor-Water-Sports_S11_A 17_Tudor-Water-Sports_S11_B 18_Imbo-Nasoro_115_A 18_Maliwae_114_A 18_Ras-Kwa-Mwalimu-Bakari_116_A 18_Vitanga-Viwili_113_A 19_Bekomba_118_A 19_Dzambani_121_A 19_Kajutoni_120_A 19_Kitangani_117_A 19_Park_119_A 2_Lower-Mpunguti_0004_A 2_Shimoni-garden_0001_A 2_Wasini-Channel_0002_A 2_Wasini-Channel_0003_A 20_Coast-General-Hospital_S10_A 20_Coast-General-Hospital_S10_B 20_Fort-Jesus_S08_A 20_Fort-Jesus_S08_B 20_Fort-Jesus_S08_C 20_Kenya-Meat-Commission_S12_A 20_Kenya-Meat-Commission_S12_B 20_Kenya-Meat-Commission_S12_C 20_Kenya-Navy_S03_A 20_Kenya-Navy_S03_B 20_Kilindini-Mouth_S06_A 20_Kilindini-Mouth_S06_B 20_Kilindini-Mouth_S06_C 20_Kipevu_S04_A 20_Kipevu_S04_B 20_Kombani-RM_S13_A 20_Kombani-RM_S13_B 20_Liwatoni_S05_A 20_Liwatoni_S05_B 20_Liwatoni_S05_C 20_Madobini_S09_A 20_Madobini_S09_B 20_Mambome-RM_S02_A 20_Mambome-RM_S02_B 20_Mwache-RM_S01_A 20_Mwache-RM_S01_B 20_Tsalu-River-Mouth_S14_A 20_Tsalu-River-Mouth_S14_B 20_Tudor-Kilindini-Mouth_S07_A 20_Tudor-Kilindini-Mouth_S07_B 20_Tudor-Water-Sports_S11_A 20_Tudor-Water-Sports_S11_B 21_Coast-General-Hospital_S10_A 21_Coast-General-Hospital_S10_B 21_Fort-Jesus_S08_A 21_Fort-Jesus_S08_B 21_Fort-Jesus_S08_C 21_Kenya-Meat-Commission_S12_A 21_Kenya-Meat-Commission_S12_B 21_Kenya-Meat-Commission_S12_C 21_Kenya-Navy_S03_A 21_Kenya-Navy_S03_B 21_Kilindini-Mouth_S06_A 21_Kilindini-Mouth_S06_B 21_Kilindini-Mouth_S06_C 21_Kipevu_S04_A 21_Kipevu_S04_B 21_Kombani-RM_S13_A 21_Kombani-RM_S13_B 21_Liwatoni_S05_A 21_Liwatoni_S05_B 21_Liwatoni_S05_C 21_Madobini_S09_A 21_Madobini_S09_B 21_Mambome-RM_S02_A 21_Mambome-RM_S02_B 21_Mwache-RM_S01_A 21_Mwache-RM_S01_B 21_Tsalu-River-Mouth_S14_A-1 21_Tsalu-River-Mouth_S14_A-2 21_Tsalu-River-Mouth_S14_B-1 21_Tsalu-River-Mouth_S14_B-2 21_Tudor-Kilindini-Mouth_S07_A 21_Tudor-Kilindini-Mouth_S07_B 21_Tudor-Water-Sports_S11_A 21_Tudor-Water-Sports_S11_B 22_Coast-General-Hospital_S10_B 22_Fort-Jesus_S08_A 22_Fort-Jesus_S08_B 22_Kenya-Meat-Commission_S12_A 22_Kenya-Meat-Commission_S12_B 22_Kenya-Meat-Commission_S12_C 22_Kenya-Navy_S03_A 22_Kenya-Navy_S03_B 22_Kenya-Navy_S03_C 22_Kilindini-Mouth_S06_A 22_Kilindini-Mouth_S06_B 22_Kipevu_S04_A 22_Kipevu_S04_B 22_Kipevu_S04_C 22_Kombani-RM_S13_A 22_Kombani-RM_S13_B 22_Liwatoni_S05_A 22_Liwatoni_S05_B 22_Liwatoni_S05_C 22_Madobini_S09_A 22_Madobini_S09_B 22_Madobini_S09_C 22_Mambome-RM_S02_A 22_Mambome-RM_S02_B 22_Mwache-RM_S01_A 22_Tsalu-River-Mouth_S14_A 22_Tsalu-River-Mouth_S14_B 22_Tudor-Kilindini-Mouth_S07_A 22_Tudor-Kilindini-Mouth_S07_B 22_Tudor-Water-Sports_S11_A 22_Tudor-Water-Sports_S11_B 23_Kenya-Navy_S03_A 23_Kenya-Navy_S03_B 23_Kenya-Navy_S03_C 23_Kipevu_S04_A 23_Kipevu_S04_B 23_Kipevu_S04_C 23_Liwatoni_S05_A 23_Liwatoni_S05_B 23_Mambome-RM_S02_A 23_Mambome-RM_S02_B 23_Mwache-RM_S01_A 23_Mwache-RM_S01_B 24_Coast-General-Hospital_S10_A 24_Coast-General-Hospital_S10_B 24_Fort-Jesus_S08_A 24_Fort-Jesus_S08_B 24_Fort-Jesus_S08_C 24_Kenya-Meat-Commission_S12_A 24_Kenya-Meat-Commission_S12_B 24_Kenya-Meat-Commission_S12_C 24_Kilindini-Mouth_S06_A 24_Kilindini-Mouth_S06_B 24_Kilindini-Mouth_S06_C 24_Kombani-RM_S13_A 24_Kombani-RM_S13_B 24_Madobini_S09_A 24_Madobini_S09_B 24_Tsalu-River-Mouth_S14_A 24_Tsalu-River-Mouth_S14_B 24_Tudor-Kilindini-Mouth_S07_A 24_Tudor-Kilindini-Mouth_S07_B 24_Tudor-Water-Sports_S11_A 24_Tudor-Water-Sports_S11_B 24_Tudor-Water-Sports_S11_C 25_Amani-Tiwi_0081_F 25_Amani-Tiwi_0083_A 25_Amani-Tiwi_0084_A 25_Jacaranda_0075_A 25_Jacaranda_0075_B 25_Kongo-River_0076_A 25_Kongo-River_0077_B 25_Kongo-River_0078_C 25_Kongo-River_0079_D 25_Kongo-River_0080_E 25_Kongo-River_0082_G 25_Mwanamochi_0074_A 25_Mwanamochi_0074_B 25_Mwanamochi_0074_C 25_Mwazaro_0085_A 26_Chikondo_0092_A 26_Chikondo_0092_B 26_Gamba-la-kasa_0087_A 26_Gamba-la-kasa_0087_B 26_Kifungu_0091_A 26_Kombeni_0088_A 26_Kombeni_0088_B 26_Mundu_0086_A 26_Mwamba-mkuu_0090_A 26_Mwamba-mkuu_0090_B 26_Mwazaro_0085_B 26_Ndua_0089_A 26_Ndua_0089_B 26_Ramisi-RM_0093_A 26_Ramisi-RM_0093_B 26_Ramisi-RM_0093_C 26_Ramisi-RM_0093_D 26_Ramisi-RM_0093_E 27_Captain-Andys_0099_A 27_Captain-Andys_0099_B 27_Coral-garden_0097_A 27_Hemmingways_0094_A 27_Hemmingways_0094_B 27_Kirepwe_0101_A 27_Kirepwe_0101_B 27_Majaoni_0102_A 27_Maji-ya-ndani_0103_A 27_Richard-Bennett_0096_A 27_Saidi-Ndau_0100_A 27_Turtle-Bay_0095_A 27_Turtle-Bay_0095_B 27_Whale-Island_0098_A 28_Coral-garden_0108_A 28_Cowrieshell_0107_A 28_Jumba-Ruins_0104_A 28_Mtwapa-Mouth_0105_A 28_Nyali_0112_A 28_Pirates_0110_A 28_Ras-Iwatine_0111_A 28_Serena_0106_A 28_Star-Fish_0109_A 29_Coast-General-Hospital_S10_A 29_Coast-General-Hospital_S10_B 29_Fort-Jesus_S08_A 29_Fort-Jesus_S08_B 29_Kenya-Meat-Commission_S12_A 29_Kenya-Meat-Commission_S12_B 29_Kilindini-Mouth_S06_A 29_Kilindini-Mouth_S06_B 29_Kilindini-Mouth_S06_C 29_Kipevu_S04_A 29_Kipevu_S04_B 29_Kipevu_S04_C 29_Kombani-RM_S13_A 29_Kombani-RM_S13_B 29_Liwatoni_S05_A 29_Liwatoni_S05_B 29_Liwatoni_S05_C 29_Madobini_S09_A 29_Madobini_S09_B 29_Mambome-RM_S02_A 29_Mambome-RM_S02_B 29_Mambome-RM_S02_C 29_Mwache-RM_S01_A 29_Mwache-RM_S01_B 29_Mwache-RM_S01_C 29_Tudor-Kilindini-Mouth_S07_A 29_Tudor-Kilindini-Mouth_S07_B 29_Tudor-Kilindini-Mouth_S07_C 29_Tudor-Water-Sports_S11_A 29_Tudor-Water-Sports_S11_B 3_Black-Marine_0009_A 3_Langoni_0010_A 3_Mwatsinyavu_0007_A 3_Wasini-Jetty_0005_A 3_Wasini-Jetty_0005_B 3_Wasini-Jetty_0005_C 4_Kigomeni_0017_A 4_Kongo-River_0020_A 4_Langoni_0015_A 4_Langoni_0015_B 4_Ligagana_0012_A 4_Makonde_0013_A 4_Mlango-wa-Galu_0016_A 4_Mwachema_0019_A 4_Mwanamochi_0018_A 4_Mwanyaza_0014_A 4_Shimo-la-Mlango_0011_A 5_BAT_0021_A 5_Fuzo_0024_A 5_Mkwanju_0025_A 5_Mwapadi_0022_A 5_Tangi-la-Meli_0023_A 6_Hemmingways_0033_A 6_Jetty_005_A 6_Kadaini_0032_A 6_Lower-Mpunguti_0004_B 6_Majaoni_0029_A 6_Maji-ya-ndani_0028_A 6_Mvinje-moja_0031_A 6_Richard-Bennett_0034_A 6_Sita_0027_A 6_Thonga_0030_A 6_Yava_0026_A 6_Yava_0026_B 7_Fungu_0037_A 7_Kwa-Mtsere_0038_A 7_Maluwayu_0036_A 7_Mwamba-Bakari_0035_A 8_Chamba-Cha-Kambani_0044_A 8_Kafeni_0042_A 8_Kivunjeni_0041_A 8_Kwa-Adiadi_0039_A 8_Magic-Island_0045_A 8_Mbwanyongo_0040_A 8_ShaliShali-Komeoni_0043_A 9_Fungu-ya-juu_0046_A 9_Jacaranda_0049_A 9_Navy_0047_A 9_Simitini_0048_A Coastal waters Event1 Event10 Event11 Event12 Event13 Event14 Event15 Event16 Event17 Event18 Event19 Event2 Event20 Event21 Event22 Event23 Event24 Event25 Event26 Event27 Event28 Event29 Event3 Event4 Event5 Event6 Event7 Event8 Event9 HAB species composition harmful algae blooms Kenya microalgae abundances Phytoplankton Phytoplankton net, 20µm potentially harmful microalgae KoboToolbox Phytoplankton net, 20µm Inverted microscope, Leica, DMIL 2021-08-24 2022-07-30 Complete -4.6852886 -2.8432259 39.367146 40.2433312 0.5 m (DEPTH, water) 0.5 m (DEPTH, water) NOMIHAB Nutrients in Coastal Waters of Mombasa, Kenya: Sources, Pathways and Implications on HABs access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 105285 data points text/tab-separated-values Oduor, Nancy Awuor; Moosdorf, Nils (2026): Nutrient and organic matter dynamics in Mombasa coastal waters (August 2021 - July 2022) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.983442 Oduor, Nancy Awuor; Munga, Cosmas N; Imbayi, Linet Kiteresi; Botwe, Paul K; Nyanjong, Ezekiel; Muthama, Charles M; Mise, Neville A; Moosdorf, Nils (2024): Anthropogenic nutrients and phytoplankton diversity in Kenya's coastal waters: An ecological quality assessment of sea turtle foraging sites. Marine Pollution Bulletin, 199, 115897, https://doi.org/10.1016/j.marpolbul.2023.115897 Botes, Lizeth (2003): Phytoplankton Identification Catalogue - Saldanha Bay, South Africa, April 2001. Programme Coordination Unit Global Ballast Water Management Programme International Maritime Organization 4 Albert Embankment, London SE1 7SR, UK, https://wwwcdn.imo.org/localresources/en/OurWork/PartnershipsProjects/Documents/Mono7.pdf Chrétiennot-Dinet, M-J; Sournia, Alain; Ricard, M; Billard, C (1993): A classification of the marine phytoplankton of the world from class to genus. Phycologia, 32(3), 159-179, https://doi.org/10.2216/i0031-8884-32-3-159.1 Eaton, A D; Clesceri, L S; Greenberg, A E; Franson, M A H (1995): Standard Methods for the Examination of Water and Wastewater, 19th Edition. American Public Health Association; American Water Work Association; Water Environment Federation, Washington, DC Gu, Haifeng; Wu, Yiran; Lü, Songhui; Lu, Douding; Tang, Ying Zhong; Qi, Yuzao (2022): Emerging harmful algal bloom species over the last four decades in China. Harmful Algae, 111, 102059, https://doi.org/10.1016/j.hal.2021.102059 Hallegraeff, Gustaaf M; Enevoldsen, Henrik; Zingone, Adriana (2021): Global harmful algal bloom status reporting. Harmful Algae, 102, 101992, https://doi.org/10.1016/j.hal.2021.101992 Hansen, Gert; Turquet, Jean; Quod, Jean Pascal; Ten-Hage, Loïc; Lugomela, Charles; Kyewalyanga, Margareth N; Hurbungs, Mira; Wawiye, Peter; Ogongo, Bernard O; Tunje, Shandrack; Rakotoarinjanahary, Henri (2001): Potentially harmful microalgae of the Western Indian Ocean: a guide based on a preliminary survey. Intergovernmental Oceanographic Commission, https://unesdoc.unesco.org/ark:/48223/pf0000126624 Lundholm, Nina; Bernard, Cécile; Churro, Catarina; Escalera, Laura; Hoppenrath, Mona; Iwataki, Mitsunori; Larsen, Jacob; Mertens, Kenneth Neil; Murray, Shauna A; Probert, Ian; Salas, Rafael; Tillmann, Urban; Zingone, Adriana (2009): IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae [dataset]. VLIZ, https://doi.org/10.14284/362 Magurran, Anne E (2004): Measuring Biological Diversity. Stirling, H P; Beverigde, M C M; Ross, Lukas; Phillips, M J (1985): Chemical and biological methods of water analysis for aquaculturalists.

This dataset compiles species-resolved cell abundances (cells L⁻¹) of potentially harmful microalgae (PHM) from 29 sampling events, during low tides, across ~260 km of Kenya's shoreline, conducted monthly in Mombasa from August 2021 to July 2022, and twice from other coastal areas (dry/wet monsoons), with supplementary surveys in September 2021, March 2022, and July 2022 for inaccessible sites. Of these events, 24 targeted Mombasa-area creeks (Kilindini and Tudor) and adjacent waters, while 5 covered southern nearshore reef-fringing and oceanic sites (Shimoni, Chale, Mwaepe, Diani, Tiwi), yielding 463 water samples in total. Surface seawater (0–0.5 m) was collected via 20-μm phytoplankton net (20 L filtered to 50 mL, fixed in 5% Lugol's iodine). In situ parameters (temperature, salinity, pH, conductivity, dissolved oxygen, turbidity, GPS coordinates) were recorded using KoboToolbox on smartphones, with associated environmental data published separately (Oduor et al., 2024). At the Kenya Marine and Fisheries Research Institute (KMFRI) Mombasa laboratory, replicates (A–C per station/event) were subsampled (2 mL), settled in Sedgewick-Rafter chambers, and enumerated via inverted light microscopy at 200× magnification following standard protocols (Chrétiennot-Dinet et al., 1993; Lundholm et al., 2009). Taxonomic identification used IOC-UNESCO HAB manuals (Botes, 2003; Hansen et al., 2001) and was verified against the World Register of Marine Species (WoRMS) and AlgaeBase (https://www.algaebase.org/). The data table details taxonomy (class, genus, species), ecological groups (diatoms, dinoflagellates, cyanobacteria, silicoflagellates), and harm categories. Harm categories classify taxa as toxin producers (e.g., Pseudo-nitzschia, Alexandrium, Dinophysis spp.), oxygen depleters (e.g., Skeletonema, Thalassiosira, Rhizosolenia spp.), gill cloggers (e.g., Chaetoceros, Dictyocha spp.; bloom thresholds: ≥10⁴ cells mL⁻¹ physical; ≥500 cells L⁻¹ toxins; (Hallegraeff et al., 2021; Hansen et al., 2001; Lunholm et al., 2009 onwards)), or other HAB risks (Gu et al., 2022; Hansen et al., 2001). Toxin production includes Paralytic Shellfish Toxins (PST), Diarrheic Shellfish Poisoning (DSP), Amnesic Shellfish Poisoning (ASP), Neurotoxic Shellfish Poisoning (NSP), Ciguatera Fish Poisoning (CFP), Hepatotoxic Shellfish Poisoning (HSP), and Azaspiracid Shellfish Poisoning (AZP). These data facilitate biogeographic, ecological, and risk-assessment studies of PHM diversity (e.g., Margalef richness; Magurran, 2004), functional traits, habitat affinities (Mombasa creeks vs. southern sites), and spatiotemporal patterns, integrable with environmental/toxin measurements, to explore physicochemical drivers and phycotoxin risks. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993136"! ** Abundances were calculated per APHA (1995) and Stirling (1985): N=(A×1000×C)/(V×F×L) (Where N= cells L⁻¹, A= cells counted, C= concentrate volume (mL), V= field volume (mm³), F= fields counted, L= filtered volume (L)).

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.1016/j.hal.2021.101992 Global harmful algal bloom status reporting https://doi.org/10.1016/j.hal.2021.102059 Emerging harmful algal bloom species over the last four decades in China https://doi.org/10.1016/j.marpolbul.2023.115897 Anthropogenic nutrients and phytoplankton diversity in Kenya's coastal waters: An ecological quality assessment of sea turtle foraging sites https://doi.org/10.14284/362 IOC-UNESCO Taxonomic Reference List of Harmful Micro Algae https://doi.org/10.2216/i0031-8884-32-3-159.1 A classification of the marine phytoplankton of the world from class to genus https://doi.pangaea.de/10.1594/PANGAEA.983442 Nutrient and organic matter dynamics in Mombasa coastal waters (August 2021 - July 2022) https://en.wikipedia.org/wiki/Genus Genus https://en.wikipedia.org/wiki/Species Species https://unesdoc.unesco.org/ark:/48223/pf0000126624 Potentially harmful microalgae of the Western Indian Ocean: a guide based on a preliminary survey https://www.kobotoolbox.org/ KoboToolbox https://www.leibniz-zmt.de/en/research/research-projects/nomihab.html NOMIHAB https://wwwcdn.imo.org/localresources/en/OurWork/PartnershipsProjects/Documents/Mono7.pdf Phytoplankton Identification Catalogue - Saldanha Bay, South Africa, April 2001 DIF 9.4 2026-04-09 2026-04-15