Community valuation – divelines 2012

Pilot scheme for setting values for underwater habitats.This dataset shows a valuation of underwater communities. The dataset is based on three research areas: Archipealgo Sea, Raseborg area and Kotka. The Archipelago dataset is based on dive transects conducted by the NANNUT project in August and September 2010 and 2011 in the Archipelago Sea. The Kotka dataset ataset shows locations where underwater data was collected by the projects NANNUT and VELMU during August 2011 in Kotka near the Mussalo harbor. Archipelago dataset: Each investigated square along the diveline is given a value (1-5) according to a valuation where locations with a high value have high species richness or vegetation cover, red listed species, are potential fish spawning sites, or otherwise representative important habitats. OBS! The valuation is based on vegetation and mussel coverage data. Low value locations can have other nature values that have not been studied here (e.g. rich Benthic fauna or be important fish spawning sites). Kotka dataset: The dataset contains information on the occurrence of ecological communities based on the percent coverage of plants and mussels. The communities analysed are vascular plant, stoneworth and seagrass meadows, bladderwrack and redalgae belts, as well as well as blue mussel/zebra mussel beds and mixtures of the above. The pies show the disribution of communities on each dive transect.水下栖息地赋值试点方案。本数据集包含水下群落的价值评估结果，涵盖三大研究区域：群岛海、拉塞博格地区与科特卡。 群岛海数据集源自NANNUT项目于2010年、2011年8-9月间在群岛海开展的潜水样带（dive transects）调查。科特卡数据集记录了2011年8月NANNUT与VELMU项目在科特卡市穆萨洛港附近采集水下数据的全部点位。 群岛海数据集：沿潜水样带的每个调查样方均依据赋值规则获得1-5分的评分。评分标准如下：分值较高的点位具备更高的物种丰富度或植被覆盖度、包含红色名录物种（red listed species）、为潜在鱼类产卵场，或是具有其他代表性的重要栖息地。注意！本次评估仅基于植被与贻贝覆盖数据，低分点位可能存在本研究未考察的其他自然价值（例如丰富的底栖动物（Benthic fauna）群落，或是重要的鱼类产卵场）。 科特卡数据集：包含基于植物与贻贝覆盖百分比的生态群落出现信息。本次分析的群落类型包括维管植物（vascular plant）、轮藻（stoneworth）与海草床（seagrass meadows）、泡叶藻（bladderwrack）与红藻带（redalgae belts），以及蓝贻贝（blue mussel）/斑贻贝（zebra mussel）床及其上述群落的混合类型。各饼图展示了每条潜水样带上的群落分布情况。