“… spicifera in La Paz Bay from 2004-2023. This database contains literature, citizen science and field data: presence and size of the macroalga, segment of the thallus with epibionts ( Hydrozoa or Bryozoa ), presence of Hydrozoa , Bryozoa or both, sampling data (year, month, day), place and coordinates of collection or recording, depth, environmental variables in situ (salinity sea surface, temperature), environmental satellite variables Chlo- a , PAR, PIC, POC and SST and anthropogenic activities in the site, such as natural protected area, tourism and local uses, fishing, nutrient supply, metal supply, nautical traffic, runoff water, mining, physical habitat modification, dump, industry and mangrove deforestation ( Méndez et al 2006 , Velasco García 2009 , Mendoza-Salgado et al 2011 , Ávila et al 2012 , Secretaría de Medio Ambiente y Recursos Naturales and Comisión Nacional de Áreas Naturales Protegidas 2014 , Tovar Lee et al 2015 , Secretaría de Medio Ambiente y Recursos Naturales and Recursos Naturales and Comisión Nacional de Áreas Naturales Protegidas 2016 , Roldán-Wong et al 2020 , Mendoza-Becerril et al 2022 , Estrada-González pers. obs.).…”