Pros and Cons of Biological Quality Element Phytoplankton as a Water-Quality Indicator in the NW Mediterranean Sea

26 pagesThe Water Framework Directive (WFD) mandates the use of biological quality element (BQE) phytoplankton to assess the ecological status of coastal and transitional water bodies (WB). Here, we present (i) a critique of the general ecological assumptions of the WFD, (ii) a review of the ecological features of coastal phytoplankton dynamics, (iii) several approaches to establish a methodology to assess water-quality along the Catalan coast (NW Mediterranean Sea) based on BQE phytoplankton, and (iv) a critical examination of the use of phytoplankton as a BQE. Since 2005, we have followed several approaches aimed at assessing water-quality based on BQE phytoplankton and linking this indicator to a proxy to a costal pressure index. We have therefore studied phytoplankton communities at three different levels: as potentially harmful species, as functional or taxonomic groups, and with respect to their bloom frequency. Despite intense efforts, none of these fulfilled the WFD’s management requirements, which in this context were found to contain several inherent flaws. As an alternative, we propose a methodology to assess water-quality based on the use of chlorophyll-a (Chl-a), as a proxy of phytoplankton biomass. The Chl-a concentration offers a very simple and representative measure of the phytoplankton community, and, importantly, it is used worldwide in water-quality studies, thus allowing not only regional but also cross-country comparisons. Moreover, because Chl-a concentrations clearly respond to nutrient enrichment, we were able to establish a BQE-specific typology for water bodies based on salinity, which is linked to nutrient loads. Using a newly developed coastal pressure index (Land Use Simplified Index, LUSI) that also reflects nutrient inputs, we demonstrated a significant pressure–impact relationship, as required by the WFD for management purposes. Based on this relationship, we were able to define reference conditions and water-quality boundaries for each type. We conclude our discussion with a consideration of the pros and cons of the use of phytoplankton as a BQEPeer Reviewe

Pengaruh karakteristik pekerjaan terhadap hubungan antara Professional Quality of Life (proQOL) dan Counterproductive Work Behavior (CWB) pada pegawai PT. BRI cabang Katamso Yogyakarta

What is a virtual person? What is it used for? What is its added value? Virtual persons sometimes describe avatars and new forms of identities in online games. They also appear in other contexts; some authors use them in the legal domain. Within FIDIS, the concept of virtual person has been extended in order to better describe and understand new forms of identities in the Information Society in relation to rights, duties, obligations and responsibilities. Virtual persons, as other virtual entities, exist in the virtual world, the collection of all (abstract) entities which are or have been the product of the mind or imagination. The virtual world -not to be confused with the digital world- allows a unified description of many identity-related concepts that are usually defined separately without taking into consideration their similarities: avatars, pseudonyms, categories, profiles, legal persons, etc. The legal system has a long experience of using abstract entities to define rules, categories, etc., in order to associate legal rights, obligations, and responsibilities to persons that can be considered instances of these abstract entities in specific situations. The model developed within FIDIS intentionally uses a similar construction. n this chapter, after having explained the model, we apply it to pseudonyms. Then we explore the concept of virtual persons from a legal perspective. Eventually, we introduce trust in the light of virtual persons