Data Set of Biochemical Consumption of Oxygen of the Curonian Lagoon

The aim of the research is to evaluate water quality of the Curonian Lagoon according to organic substances which accumulate in the Lagoon. Biochemical consumption of oxygen within 7 days (BOD7) as an indirect indicator reflects the water body pollution by organic material. Because of eutrophication abundant organic substances (including plankton) accumulate and oxygen is used in oxidation of organic material.
In accordance with the national Curonian Lagoon monitoring programme, the research of BOD7 from 1984 to 1992 was carried out every month (except winter months) in one station (coordinates: 5520.5' N and 2116.5' E) which is under the impact of river Nemunas, from 1993 to 2003 - at 12-13 stations at surface and bottom layers in the north part of the Lagoon which belongs to the Lithuania. Investigations are performed according to HELCOM methods.
The data are fully quality controlled. Systematic certification of laboratories, participation in international intercalibrations, internal control, introduced managing system for research' quality, use of high quality reagents determine quality of data.
All data is stored in archive (in table forms on paper) and is saved on hard disk.

本研究旨在根据在科拉尤恩湾积累的有机物质评估该湾的水质。生化需氧量（BOD7）作为间接指标，反映了水体受有机物质污染的程度。由于水体富营养化，大量有机物质（包括浮游生物）积累，有机物质的氧化消耗了氧气。根据国家科拉尤恩湾监测计划，自1984年至1992年，每月（除冬季月份外）在受内穆萨河影响的单个监测站（坐标：北纬5520.5'，东经2116.5'）进行BOD7研究，1993年至2003年——在湾北部12-13个站点的表层和底层进行，这些站点属于立陶宛。调查遵循赫尔辛基委员会（HELCOM）的方法进行。数据经过全面的质量控制。实验室的系统认证、参与国际校准、内部控制、引入研究质量管理系统、使用高质量试剂确保了数据的准确性。所有数据均存档（以纸张上的表格形式）并保存在硬盘上。