2000 Scottish Natural Heritage (SNH) Loch Torridon ROV survey

Dataset used in the NatureScot Commissioned Report 536 - Biological analyses of underwater video from research cruises in the Clyde Sea, Loch Torridon and the Inner Sound, North Minch, Loch Eriboll and Orkney. To help target marine nature conservation in Scotland, SNH and JNCC have generated a focused list of habitats and species of importance in Scottish waters - the Priority Marine Features (PMFs). A subset of these features (termed MPA search features) will drive the identification of Nature Conservation MPAs. The principal aim of the present investigation was to improve knowledge of the occurrence and distribution of species and habitats of recognised conservation importance in Scottish waters, especially PMFs, but also taking into consideration other importance measures. This was to be achieved through the analysis of seabed video and still photographic imagery collected during research cruises around Scotland carried out by various organisations between 2000 and 2012.
This dataset is from an ROV survey of habitats at 35 sites in Loch Torridon carried out in August 2000. Still images were used to describe the nature of the seabed, in terms of the physical structure and the species assemblages. Species present were, as far as possible, identified and quantified using the semi-quantitative MNCR SACFOR scale (Hiscock, 1996). Based on the physical and biological attributes, biotopes were allocated (Connor et al., 2004). Runs traversing a sequence of biotopes were split into corresponding segments, with the transition points recorded using the time. Segmentation of runs was not practicable in the case of mosaics of recurring biotopes, in which case all biotopes observed were simply listed. Runs and run segments were assessed for the presence of PMFs, as well as for the presence of species and habitats of recognised conservation importance according to a number of additional criteria. Species SACFOR data, habitat descriptions, biotopes, depth and positional data have been incorporated into the Marine Recorder repository.

本数据集源自《NatureScot 委托报告536》中关于克莱德海、托里敦湖和内湾、北明奇、艾瑞博尔湖以及奥克尼海域水下视频的生物学分析。为助力苏格兰海洋自然保护目标的实现，苏格兰自然保护局（SNH）与联合海洋与海岸委员会（JNCC）共同编制了一份针对苏格兰水域中具有重要意义的栖息地和物种的清单——优先海洋特征（PMFs）。该清单中的一部分特征（称为MPA搜索特征）将推动自然保护MPAs的识别。本次研究的主要目标是提升对苏格兰水域中已识别的具有保护意义的物种和栖息地，尤其是PMFs的出没与分布知识的理解，同时亦考虑其他重要性指标。此目标将通过分析2000年至2012年间由多家机构在苏格兰周边海域进行的研究巡航所收集的海底视频和静止摄影图像得以实现。

该数据集源于2000年8月对托里敦湖35个栖息地进行ROV调查的结果。静止图像被用于描述海底的性质，包括物理结构和物种群集。尽可能地对现有物种进行识别和量化，采用半定量MNCR SACFOR量表（Hiscock，1996）。根据物理和生物特性，分配了生物群落（Connor等，2004）。生物群落序列的穿越路径被分割成相应的段落，过渡点通过时间进行记录。对于重复出现的生物群落马赛克，由于无法进行路径分割，因此简单地列出了所有观察到的生物群落。对路径及其段落进行了PMFs存在性以及根据多项额外标准识别的具有保护意义的物种和栖息地的评估。物种SACFOR数据、栖息地描述、生物群落、深度和位置数据已被纳入海洋记录器存储库。