The coast of Ghana is considered the most seaweed-endowed region in West Africa, although information on the local spatial and temporal distributions and abundance of seaweed species is limited. In this study, seaweed species were sampled monthly from five coastal sites in the Central (Elmina, Komenda, Mumford) and Western (Shama and Takoradi Fisheries) Regions of Ghana during low tides from 2017 to 2019 to determine their diversity and abundance (biomass). Sampling was conducted using two (2) transect lines and quadrats (each of dimension 0.25 m²) at each site. Thirty-five (35) taxa were identified at the five sites: 15 belonging to Rhodophyta, 11 to Chlorophyta and 9 to Phaeophyta. The Komenda site recorded the highest species diversity index of 2.06 whereas the Takoradi Fisheries had the lowest value of 0.68. Ulva fasciata, Padina durvillaei, Sargassum vulgare, Hydropuntia dentata and Hypnea musciformis were the most dominant species at the sites. A mean monthly biomass of 2.19 g dry wt m⁻² was recorded for all five sites during the study period, with the greatest recorded at Takoradi Fisheries (3.53 dry wt m⁻²) and the least at Komenda (1.10 g dry wt m⁻²). The greatest biomass of the highly economic important species, H. musciformis, was recorded at Shama. The highest mean monthly biomass was recorded between August and October while the least was observed from December to February. Results from this study indicate considerable spatial and temporal variability in the diversity and abundance of seaweeds across the studied sites. These findings provide important baseline information for conservation and utilization of seaweeds, particularly their cultivation along the Ghanaian coastal waters as an alternate source of livelihood for the local communities.

加纳海岸被认为是西非海藻资源最多的地区，尽管有关当地时空分布和海藻种类丰富的信息有限。在这项研究中，从2017年至2019年的低潮期间，每月从加纳中部（Elmina，Komenda，Mumford）和西部（Shama和Takoradi渔业）的五个沿海站点采样海藻物种，以确定其多样性和丰度（生物量） 。使用两（2）条样线和四边形（每个尺寸为0.25 m ²）进行采样）在每个站点上。在这五个地点确定了三十五（35）个分类单元：15个属于红藻类，11个属于绿藻类和9个属于藻类。科门达站点记录的物种多样性指数最高，为2.06，而塔科拉迪渔业的最低，为0.68。在这些地点，Ulva fasciata，Padina durvillaei，Sargassum vulgare，齿状Hippuntia dentata和Hypnea musciformis是最主要的物种。在研究期间，所有五个地点的平均月生物量为2.19 g干wt m ^-2，其中最大的记录是塔科拉迪渔业（3.53干wt m ^-2），最少的是Komenda（1.10 g干wt m ^-2）^{。 2}）。经济上很重要的物种，H。musciformis，最大的生物量，是在Shama录制的。在8月至10月之间记录的平均月生物量最高，而从12月至2月则观察到最少。这项研究的结果表明，整个研究地点的海藻多样性和丰富度都存在相当大的时空变化。这些发现为海藻的保护和利用提供了重要的基线信息，尤其是它们在加纳沿海水域的养殖，作为当地社区的另一种生计来源。