Article
Limnology
Steve R. Dudgeon, Peter S. Petraitis
Summary: Research shows that A. nodosum is resilient to small clearings, but its resilience decreases with increased disturbance. On the other hand, F. vesiculosus is able to quickly dominate space when it invades early and grows rapidly.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Biodiversity Conservation
Thomas J. Trott
Summary: This study examined the similarity of macroinvertebrate species assemblages from exposed rocky headlands in the Gulf of Maine to understand the mesoscale patterns and their relationship with environmental factors. The study found that species assemblage similarity was correlated with latitude, and there was a distinct grouping of sampling sites separating two Gulf regions. Species turnover accounted for a large portion of the regional dissimilarity, with molluscs and crustaceans contributing the most. Satellite-derived temperatures explained a significant amount of the regional variation. These findings suggest that hydrographic features and associated environmental conditions influence community dynamics and shape the dissimilarity between Gulf regions.
Article
Environmental Sciences
Romina Vanessa Barbosa, Marion Jaud, Cedric Bacher, Yann Kerjean, Fred Jean, Jerome Ammann, Yoann Thomas
Summary: In this study, drone surveys were used to characterize the distribution of mussel aggregations and evaluate the role of topographic features in determining their distribution. The results showed that topographic features and intertidal height were the main factors influencing mussel distribution. The study highlights the advantage of using high-resolution drone images to study ecological processes in intertidal ecosystems.
Article
Biochemistry & Molecular Biology
Seyed Erfan Mousavi, Mohammad Sadegh Hatamipour, Afsaneh Yegdaneh
Summary: This study investigated the extraction and characterization of alginic acid, the most abundant compound in brown algae. Sargassum angustifolium from the brown algae family native to the Persian Gulf was used. The effects of temperature, time, algae mass to solvent volume ratio, and ultrasonic power on extraction yield and monomer ratio were examined. The study also looked at poly dispersity index and cytotoxic effects against breast cancer cells. The results showed a high extraction yield of 46%, demonstrating the effectiveness of ultrasound. The study also found low monomer ratio, low poly dispersity index, and significant cytotoxicity against breast cancer cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Ecology
Thomas Burel, Gauthier Schaal, Jacques Grall, Michel Le Duff, Erwan Ar Gall
Summary: Physical constraints, particularly hydrodynamics, play a significant role in shaping macroalgal canopy-dominated rocky shore communities. This study examines the structure of benthic communities along a hydrodynamic gradient and the impact of wave height on the transition from macroflora to macrofauna dominance. The results challenge the commonly accepted paradigm of a gradual shift and reveal the presence of a wave height threshold that influences the dominance of different organisms.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Oceanography
Lucas Rocha Melo Porto, Patricia Luciano Mancini
Summary: Coastal areas are crucial for the feeding, resting, and nesting of various bird species, but little is known about bird diversity in Brazil's coastal areas adjacent to oil exploration. This study investigated the bird diversity on five rocky shores near an oil exploration field in southeast Brazil. The study found a total of 30 bird species, including migrants from the northern hemisphere and nationally threatened species. The richness and diversity of birds did not increase with the size of the rocky shores, but varied seasonally with higher diversity during the summer.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Ecology
Munique dos Santos Silva, Fernando Coreixas de Moraes, Daniela Batista, Ricardo da Gama Bahia, Athila Andrade Bertoncini, Augusto Alves Machado, Guilherme Muricy, Claudia Santiago Karez, Guilherme Henrique Pereira-Filho, Leonardo Tavares Salgado, Renato Crespo Pereira
Summary: The invasive corals Tubastraea coccinea and T. tagusensis have established populations along the Brazilian coast. The study found that the crustose coralline algae Lithophyllum spp. plays an important role in the recruitment and colonization of T. tagusensis.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Henna Rinne, Minna Bostrom, Charlotta Bjorklund, Matti Sahla
Summary: Habitat classification schemes provide tools for mapping, monitoring, and assessment of habitats across regions, while also simplifying large biodiversity datasets. The functionality of HELCOM HUB in describing variation in rocky shore communities was tested, with useful results but also weaknesses observed, particularly in the classification of red algal communities. This study highlights the importance of considering the limitations of classification systems in order to avoid losing key ecosystem functions in management contexts.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Environmental Sciences
Carlos Antonio Poot-Delgado, Yuri B. Okolodkov, Jaime Rendon-von Osten
Summary: This study investigated the phytoplankton species composition, spatio-temporal distribution, and habitats along the central coast of the state of Campeche, Mexico, identifying sixteen potentially harmful microalgal species. Massive algal proliferations occurred during different seasons, indicating the influence of environmental conditions on phytoplankton dynamics.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2022)
Article
Biodiversity Conservation
Maya Pfaff, Aiden Biccard, Philile Mvula, Jennifer Olbers, Kanakana Mushanganyisi, Angus Macdonald, Toufiek Samaai
Summary: A survey of the east coast of South Africa found breeding populations of the non-indigenous barnacle species Megabalanus tintinnabulum and M. coccopoma, spanning 725 km and 370 km of coastline, respectively. These species were not present in previous surveys and are believed to have been introduced and spread in the past two decades. The introduction and spread may have occurred through ship fouling communities or southward range expansions of tropical populations. This is the first report of non-indigenous invasive species on the intertidal rocky shores of the subtropical South African east coast.
BIOINVASIONS RECORDS
(2022)
Article
Ornithology
Keenan Yakola, Adrian Jordaan, Stephen Kress, Paula Shannon, Michelle D. Staudinger
Summary: The Gulf of Maine is home to four colonial co-nesting tern species, each with unique dietary compositions and provisioning practices. Common and Arctic Terns show similar dietary diversity, while Roseate and Least Terns primarily consume fish. The baseline dietary information provides insight into the dietary plasticity and feeding ecology of tern species, influencing assessments of risks from fishing and climate change.