EDITORIAL

Abstract

With great satisfaction, we present Volume 57, Number 2, of the journal Arquivos de Ciências do Mar. This edition gathers a diverse and relevant set of studies that expand our knowledge of aquatic ecosystems and their interactions with natural and anthropogenic factors. The original articles in this issue include studies on the use of ghost crabs as indicators of anthropogenic impact on urban beaches, the seahorse trade in Ceará, and the population analysis of Hippocampus reidi in Northeastern estuaries. Other topics covered include a methodological proposal to verify the D2 BWM standard (IMO, 2004) in the presence of toxigenic Vibrio cholerae, the sex ratio and seasonal abundance of seabob shrimp (Xiphopenaeus kroyeri), and the use of benthic foraminifera as stress indicators in coral reefs at the Pedra da Risca do Meio Marine State Park. In the scientific reviews section, we highlight the impacts of artificial beach nourishment on water quality and marine biota, as well as microbiological technologies applied to sustainable aquaculture, contributing to the advancement of management practices. The scientific notes include studies on the length- eight relationship of 55 fish species caught using fixed arrowhead traps in Pernambuco, the acute toxicity of ammonia to the soft coral Xenia umbellata, and a new record of the anemone Calliactis tricolor for the Northeastern coast of Brazil. We also present preliminary results on the biological adaptability of the dusky grouper (Epinephelus marginatus) and observations on Guiana dolphin (Sotalia guianensis) behaviors in response to swimmers and boats. We thank the authors and reviewers for their contributions and the readers for their support. We hope this edition fosters new research and productive discussions within the scientific community.

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