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The US EPA Lake Erie indicators monitoring program 1983 – 2002: Trends in phosphorus, silica and chlorophyll a in the central basin

April 5, 2005

During the past 20 years, Lake Erie has exhibited a series of complex chemical changes resulting from changing anthropogenic influences and introductions of exotic species. Since 1990, some apparent trends in nutrient concentrations have been inconsistent with the predictions of models originally used to guide Lake Erie water quality management. We performed time trend analysis on total phosphorus (TP), chlorophyll a Chl a), and dissolved reactive silica (DRS) measurements collected during spring and summer in the central basin of Lake Erie between 1983 and 2001.

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Strategies for Managing the Lakes of the Rotorua District, New Zealand

April 5, 2005

The Rotorua district in New Zealand contains 12 nationally important lakes. Environment Bay of Plenty (EBOP), which has the responsibility of managing the quality of these lakes, set a routine monitoring program for these lakes and adopted the method of Burns et al. (1999, 2000) to analyse the data and calculate a numeric Trophic Level Index (TLI) value for each. In 1994, the district community indicated a goal to maintain the present condition for most of the lakes and to improve the remainder. As a result, nu- meric baseline TLI values were written into the Proposed Regional Water and Land Plan as the Rotorua District lake-water quality objectives.

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Data Workflow

EQuIS Data Processor (EDP)™
and Enterprise EDP provide workflow automation for Electronic Data Deliverable (EDD) checks and submissions.

EDP is the most widely used EDD checking tool in the world. The EQuIS Intelligent Data Entry Form (IDEF)™ increases the quality assurance of field or laboratory EDDs, letting you input data directly with a tablet PC or PDA.

Plan ahead with EQuIS Sample Planning Module (SPM)™, easily add contracts, methods, and labs, and incorporate a Completeness Report for scheduled analyses.

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Build – Serve – Push Graphics and Reports

Build - Access standard and GIS reports in EZView™, create reports as you need them, and preview and export your data.

Serve - Create Pick Reports for your team members, so they can generate reports as they're needed.

Push - Monitor incoming data with Environmental Information Agents (EIA™), watch for triggers or specific dates, and generate email reports for posting to dashboards.

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