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ISSN 打印: 1521-9429

ISSN 在线: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

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Algal indicators of environment in the Nahal Yarqon basin, Central Israel

卷 6, 册 4, 2004, pp. 355-382
DOI: 10.1615/InterJAlgae.v6.i4.50
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摘要

We recognized 247 species of algae from five divisions in 53 samples of plankton and periphyton collected at 14 stations over the Nahal Yarqon in 2003−2004. Of these, 204 species are indicators of environmental conditions. Species distribution over ecological groups is typical of alkaline freshwater or brackish, temperate, slow-running waters habitable for both planktonic and benthic algae. The indicators of saprobity (Watanabe's scale) show a medium level of organic pollution. The saprobity index S (Sladeček's scale) vary from 1.31 (the upper reaches) to 2.88 near the industrial area of Petakh-Tikva corresponding to II-IV classes of water quality. The self-purification capacity of the Nahal Yarqon ecosystem is rather high corresponding to the olgo- to alphamesosaprobic zones. The environmental pollution index (EPI) varies from 2 to 4 indicating a range of slightly to strongly polluted water of Class II and III. The Water Ecosystem State Index (WESI) testifies to a toxic impact on the algae in the low-water season. The River Pollution Index for saprobity (RPIs = 2.3), conductivity (RPIε = 2.0−2.7), nitric nitrogen (RPIN= 1−8), and pH (RPIpH= 7.7−7.8) indicate alkaline moderately mineralized waters with an occasional input of nitrates round the year, corresponding to the Class III water quality and the betamesosaprobic self-purification zone. Our results allow an estimate of self-purification capacity for the Nahal Yarqon on the basis of modern international approaches. We provide indicators for evaluation and monitoring of the river. This study shows the potentials of the algal bioindication method for aquatic ecosystems of Israel.

对本文的引用
  1. Barinova Sophia, Tavassi Moti, Nevo Eviatar, Algal communities of the Hadera River (Israel) under dramatic niche changes, Open Life Sciences, 5, 4, 2010. Crossref

  2. Cabecinha Edna, Van den Brink Paul J., Cabral João Alexandre, Cortes Rui, Lourenço Martinho, Pardal Miguel Ângelo, Ecological relationships between phytoplankton communities and different spatial scales in European reservoirs: implications at catchment level monitoring programmes, Hydrobiologia, 628, 1, 2009. Crossref

  3. Barinova S. S., Tavassi M., Nevo E., Algal indicator system of environmental variables in the Hadera River basin, central Israel, Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 140, 1, 2006. Crossref

  4. Barinova Sophia, Petrov Alexey, Nevo Eviatar, Comparative analysis of algal biodiversity in the rivers of Israel, Open Life Sciences, 6, 2, 2011. Crossref

  5. Barinova S., Tavassi M., Glassman H., Diversity and ecology of algae from the Lower Jordan River, Israel, Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 143, 2, 2009. Crossref

  6. Cabecinha Edna, Cortes Rui, Cabral João Alexandre, Ferreira Teresa, Lourenço Martinho, Pardal Miguel Ângelo, Multi-scale approach using phytoplankton as a first step towards the definition of the ecological status of reservoirs, Ecological Indicators, 9, 2, 2009. Crossref

  7. Or Amitai, Shtrasler Lilach, Gophna Uri, Fine-Scale Temporal Dynamics of a Fragmented Lotic Microbial Ecosystem, Scientific Reports, 2, 1, 2012. Crossref

  8. Barinova Sophia, Smith Thomas, Flora of Algae and Cyanobacteria of Continental Waters of Israel in the XXI Century: Taxonomy, Autecology and Water Quality Indicators, Diversity, 14, 5, 2022. Crossref

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