Environmental status of Israel's Mediterranean coastal waters: Setting reference conditions and thresholds for nutrients, chlorophyll-a and suspended particulate matter

Nurit Kress, Eyal Rahav, Jacob Silverman, Barak Herut

Research output: Contribution to journalArticlepeer-review

Abstract

Criteria for eutrophication related parameters to achieve and preserve good environmental status (GES) of the oligotrophic Israeli Mediterranean coast were proposed for nutrients, chlorophyll-a (Chl-a) and suspended particulate matter (SPM) concentrations. The criteria were derived from current conditions, the best choice for the area that has undergone large and irreversible ecological changes compared to the pristine background. A five-year data set (2010–2014, ca. 800 data points) was analyzed using statistical methods and best professional judgement. The coastal waters were divided into four provinces, data gaps were identified, and seasonal reference and threshold values for each province determined as the median and 1.5 times the median, respectively. Application of the derived criteria to data up to 2016 showed the coastal waters to be mainly in GES, with a few exceptions. Simplification of the proposed criteria for environmental management was addressed as well.

Original languageEnglish
Pages (from-to)612-620
Number of pages9
JournalMarine Pollution Bulletin
Volume141
DOIs
StatePublished - Apr 2019
Externally publishedYes

Bibliographical note

Funding Information:
This research was funded by Israel's Ministry of Environmental Protection [grant number 145-1-2 ] and by Israel's Ministry of Energy . We thank Hana Bernard for drawing the figures. The thorough comments by the reviewers contributed greatly to the improvement of this manuscript.

Funding Information:
This research was funded by Israel's Ministry of Environmental Protection [grant number 145-1-2] and by Israel's Ministry of Energy. We thank Hana Bernard for drawing the figures. The thorough comments by the reviewers contributed greatly to the improvement of this manuscript.

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • Chlorophyll-a
  • Environmental criteria derivation
  • Good environmental status
  • Nutrients
  • Reference conditions
  • Suspended particulate matter

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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