Intertidal macroalgal habitats are major components of temperate coastal ecosystems. Their distribution was studied using field sampling and hyperspectral remote mapping on a rocky shore of Porspoder (western Brittany, France). Covers of both dominating macroalgae and the sessile fauna were characterized in situ at low tide in 24 sampling spots, according to four bathymetric levels. A zone of ca. 17,000 m2 was characterized using a drone equipped with a hyperspectral camera. Macroalgae were identified by image processing using two classification methods to assess the representativeness of spectral classes. Finally, a comparison of the remote imaging data to the field sampling data was conducted. Seven seaweed classes were distinguished by hyperspectral pictures, including five different species of Fucales. The maximum likelihood (MLC) and spectral angle mapper (SAM) were both trained using image-derived spectra. MLC was more accurate to classify the main dominating species (Overall Accuracy (OA) 95.1%) than SAM (OA 87.9%) at a site scale. However, at sampling points scale, the results depend on the bathymetric level. This study evidenced the efficiency and accuracy of hyperspectral remote sensing to evaluate the distribution of dominating intertidal seaweed species and the potential for a combined field/remote approach to assess the ecological state of macroalgal communities.
Our People
Travel Retail Resets for a 'New Normal' – WWD
The global customer experience management market size was valued at USD 10.65 billion in 2022 and is expected to grow at a compound annual growth rate (CAGR) of 15.4% from 2023 to 2030
Customer Experience Management Market Size Report 2030
Julie Walsh's task will be to drive growth across several categories and sustain the retailer's efforts at innovation.
Macy's Names Julie Walsh SVP Beauty, Center Core – WWD
Omnichannel retail trends of 2023 - ContactPigeon
Discover the best call tracking apps to optimize your marketing strategies. Harness data, boost conversions, and maximize ROI with our insightful guide.
13 Best Call Tracking Apps and the KPIs to Measure - AgencyAnalytics
The complete guide to BigCommerce pricing, plans, and features. Learn how much a BigCommerce website costs, plus pros and cons of each plan.
BigCommerce Pricing: How Much Does a BigCommerce Website Cost in
At The Estée Lauder Companies there are exciting opportunities to play a role in our global success. Browse open jobs by career area, brand or location.
Careers – The Estée Lauder Companies Inc.
Mobile Commerce Trends to Watch for in 2023
How to Measure Social Media ROI