Amphora micrometra Giffen and Halamphora valdeminutissima sp. nov., two tiny benthic diatom species observed in the Black Sea Author Zidarova, Ralitsa 0000-0002-6451-0099 Institute of Oceanology at the Bulgarian Academy of Sciences, 40 Parvi May Str., 9000 Varna, Bulgaria. & zidarova. r @ gmail. com; https: // orcid. org / 0000 - 0002 - 6451 - 0099 zidarova.r@gmail.com Author Pottiez, Margaux 0009-0009-2282-8355 Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium. & University of Antwerp, Department of Biology - ECOSPHERE, Universiteitsplein 1, B- 2610 Wilrijk, Belgium. & margaux. pottiez @ outlook. be; https: // orcid. org / 0009 - 0009 - 2282 - 8355 margaux.pottiez@outlook.be Author Ivanov, Plamen 0000-0003-2215-7984 Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences, 2 Mayor Yurii Gagarin Str., 1113 Sofia, Bulgaria. & plamen _ new @ abv. bg; https: // orcid. org / 0000 - 0003 - 2215 - 7984 plamen_new@abv.bg Author Haan, Myriam De 0000-0003-1868-1265 Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium. & myriam. dehaan @ plantentuinmeise. be; https: // orcid. org / 0000 - 0003 - 1868 - 1265 myriam.dehaan@plantentuinmeise.be Author Vijver, Bart Van De 0000-0002-6244-1886 Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium. & University of Antwerp, Department of Biology - ECOSPHERE, Universiteitsplein 1, B- 2610 Wilrijk, Belgium. & bart. vandevijver @ plantentuinmeise. be; https: // orcid. org / 0000 - 0002 - 6244 - 1886 bart.vandevijver@plantentuinmeise.be text Phytotaxa 2023 2023-11-23 626 3 199 207 https://phytotaxa.mapress.com/pt/article/download/phytotaxa.626.3.6/51311 journal article 278722 10.11646/phytotaxa.626.3.6 861a8206-89d1-42dc-b8e9-f9a0a6b1c539 1179-3163 10200383

TABLE 1. Sea water temperature, pH, salinity and conductivity values at the sampling sites per date of measurement, with mean values during July–September 2020 and standard deviation.

Marina Port Sozopol	pH	salinity, PSU	conductivity, mS/cm	temperature, oC
27.07.2020	8.37	17.83	28.92	25.68
05.08.2020 14.08.2020 19.08.2020	8.22 8.31 8.35	17.99 17.87 18.06	29.15 28.98 29.26	25.67 26.02 25.64
25.08.2020 30.08.2020	8.34 8.34	17.82 17.80	28.9 28.87	25.84 25.54
mean	8.30 (±0.05)	17.89(±0.11)	29.01(±0.16)	25.70 (±0.17)
Maslen nos Cape
28.07.2020	8.31	17.40	28.29	25.74
13.08.2020 19.08.2020	8.32 8.49	17.47 17.96	28.37 29.14	25.89 26.35
28.08.2020	8.27	17.84	28.95	25.83
01.09.2020	8.33	17.92	29.06	26.23
mean	8.34 (±0.08)	17.72 (±0.26)	28.76 (±0.40)	26.01 (±0.27)