65 documents found, page 1 of 7
Food web attributes to assess spatial-temporal dynamics in estuarine benthic ec...
Vieira, Soraia; Maurer, Anne-France; Dias, Cristina; Adão, Helena; Sroczynska, KasiaThreatened benthic ecosystems need urgent tools for effective bioassessment and relevant management. EU Marine Strategy Framework Directive (MSFD) obligates member states to achieve GES (Good Environmental Status) for 11 descriptors of environmental state (MSFD; 2008/56/EC). From all of the descriptors, D4 that focuses on Food Webs is the most functional-oriented indicator, but also the most challenging to impl...
Ecological quality assessment of estuarine macrobenthic communities using an in...
Neves, Joana; Martins, Marta; Adão, Helena; Mil-Homens, Mário; Costa, Maria Helena; Lobo-Arteaga, JorgeMacrobenthic communities play a crucial role in the functioning of estuarine ecosystems and serve as bioindicators of environmental quality. This study assessed the ecological quality of an estuarine system using the AMBI and M-AMBI indices. The following parameters were considered: (i) environmental factors (total organic matter, organic carbon, grain size, calcium carbonate), (ii) sediment trace metals (Pb, Z...
Assessing spatial and temporal patterns of benthic bacterial communities in res...
Vieira, Soraia; Adão, Helena; Vicente, Cláudia S.L.Benthic bacterial communities are sensitive to habitat condition and present a fast response to environmental stressors, which makes them powerful ecological indicators of estuarine environments. The aim of this work is to study the spatial-temporal patterns of benthic bacterial communities in response to contrasting environmental conditions and assess their potential as ecological indicators of estuarine sedim...
Distribution patterns of benthic bacteria and nematode communities in estuarine...
Vieira, Soraia; Sroczy´nska, Kasia; Neves, Joana; Martins, Marta; Costa, Maria Helena; Adão, Helena; Vicente, Cláudia S.L.Benthic organisms are crucial in the regulation of the ecosystem functions. The interactions between benthic nematodes and sediment bacteria across divergent environmental conditions are poorly understood. The main goal of this study was to understand the spatial distribution patterns and diversity of benthic bacterial communities and nematode assemblages of the intertidal sediments in three sampling sites (Nav...
Varying response of bacteria and nematodes to environmental conditions of Sado ...
Vieira, Soraia; Adão, Helena; Vicente, Cláudia; Sroczynska, KasiaSediment microbiome and benthic nematodes are indispensable in regulating benthic estuarine ecosystems and knowledge on their distribution patterns is essential for understanding of benthic food webs dynamics. However, simultaneous ecological analysis of bacteria and nematodes communities are seldom made, whereas the question if there exist a congruence between both taxonomic groups in their responses to differ...
Spatial distribution patterns of microbiome and free-living benthic nematodes i...
Vieira, Soraia; Sroczynska, Kasia; Vicente, Cláudia; Adão, HelenaSediment microbiome has an essential role in regulating ecosystem functions, not only regulating primary productivity and nutrient cycling but also shaping trophic interactions with higher trophic levels [1]. While the importance of microbiome in terrestrial soil systems is being highly recognized, its role in marine aquatic environments remains much less studied [2]. Microbiome can be highly affected by bottom...
Bivalve gut microbiome responses to sediment characteristics and anthropogenic ...
Neves, Joana; Mil-Homens, Mário; Martins, Marta; Adão, Helena; Arteaga, JorgeEstuaries are highly dynamic ecosystems that are influenced by fluctuating environmental conditions and sediment-associated contamination. These factors can significantly affect microbiomes associated with their hosts. In this study, we investigated the gut microbiome of the bivalve Cerastoderma edule by integrating bacteria (16S rRNA) and fungal (ITS) diversity data with sediment physicochemical parameters acr...
Food web attributes to assess estuarine benthic ecosystem
Vieira, Soraia; Maurer, Anne-France; Dias, Cristina Barrocas; Adão, Helena; Sroczynska, KasiaMarine ecosystems need rapid and high-performance tools to assess biodiversity and ecosystem functioning. Descriptor 4 - food webs (MSFD) is the most functionally oriented, but challenging to implement due to limited knowledge of benthic interactions. This study investigates how spatially and temporally regulated abiotic factors shape benthic food webs by analyzing natural isotope ratios (δ13C and δ15N) and con...
Meiofauna in a changing world
Moens, Tom; Sroczynska, Katarzyna; Adão, HelenaThis special issue emerged under the umbrella of the 17th International Meiofauna Conference (SeventIMCO), which celebrated the 50th anniversary (1969–2019) of the International Association of Meiobenthologists under the general theme “Meiofauna in a changing world”. Traditionally, the triannual IMCO is the major assembly for scientists who are active in very divergent disciplines such as taxonomy, phylogeny, e...
Spatial and Temporal Distribution of the Multi-element Signatures of the Estuar...
Vieira, Soraia; Barrulas, Pedro; Chainho, Paula; Barrocas Dias, Cristina; Sroczyńska, Katarzyna; Adão, HelenaFilter-feeder bivalves such as non-indigenous Ruditapes philippinarum absorb and accumulate metals, resulting in multi-element profiles. The goal of this study was to analyse spatial and temporal distributions of the multi-element signatures in R. philippinarum populations of the Tagus and Sado estuaries (SW coast, Portugal). The clam and sediment samples were collected at three sampling sites in each estuary, ...