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Article: Spatial and Temporal Distribution of the Multi-element Signatures of the Estuarine Non-indigenous Bivalve Ruditapes philippinarum

Vieira, Soraia / Barrulas, Pedro / Chainho, Paula / Dias, Cristina Barrocas / Sroczyńska, Katarzyna / Adão, Helena

Biological trace element research. 2022 Jan., v. 200, no. 1

2022

Abstract: Filter-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. ... ...

Abstract	Filter-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, on three sampling occasions, and the analysis were done by ICP-MS (inductively coupled plasma mass spectrometry). The chemical elements were categorized according to estuarine geomorphology sources (Se, Co, Ni and Cu), elements with function in metabolic processes of the clams (Mn, Fe, Zn and Cr) and elements derived from the anthropogenic inputs (As, Pb and Cd). Zinc, Co, Ni and Pb were the main contributors for the chemical signatures of Tagus estuary populations, whilst for the Sado estuary populations were Cu, Fe, Cr, As and Cd. They were representative of all elemental categories and proved to be spatial and temporal habitat discriminators of bivalves’ estuarine populations. The multi-element signatures of R. philippinarum as a natural tag derived from the physical and chemical conditions of its habitat is a potential rapid tool to use in ecological monitoring and habitat assessment.
Keywords	Ruditapes philippinarum ; atomic absorption spectrometry ; biological assessment ; clams ; coasts ; estuaries ; habitats ; research ; sediments ; zinc ; Portugal
Language	English
Dates of publication	2022-01
Size	p. 385-401.
Publishing place	Springer US
Document type	Article
ZDB-ID	445336-0
ISSN	1559-0720 ; 0163-4984
ISSN (online)	1559-0720
ISSN	0163-4984
DOI	10.1007/s12011-021-02629-x
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Spatial and Temporal Distribution of the Multi-element Signatures of the Estuarine Non-indigenous Bivalve Ruditapes philippinarum.

Vieira, Soraia / Barrulas, Pedro / Chainho, Paula / Dias, Cristina Barrocas / Sroczyńska, Katarzyna / Adão, Helena

Biological trace element research

2021 Volume 200, Issue 1, Page(s) 385–401

Abstract	Filter-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, on three sampling occasions, and the analysis were done by ICP-MS (inductively coupled plasma mass spectrometry). The chemical elements were categorized according to estuarine geomorphology sources (Se, Co, Ni and Cu), elements with function in metabolic processes of the clams (Mn, Fe, Zn and Cr) and elements derived from the anthropogenic inputs (As, Pb and Cd). Zinc, Co, Ni and Pb were the main contributors for the chemical signatures of Tagus estuary populations, whilst for the Sado estuary populations were Cu, Fe, Cr, As and Cd. They were representative of all elemental categories and proved to be spatial and temporal habitat discriminators of bivalves' estuarine populations. The multi-element signatures of R. philippinarum as a natural tag derived from the physical and chemical conditions of its habitat is a potential rapid tool to use in ecological monitoring and habitat assessment.
MeSH term(s)	Animals ; Bivalvia ; Environmental Monitoring ; Estuaries ; Geologic Sediments ; Metals, Heavy/analysis ; Water Pollutants, Chemical/analysis
Chemical Substances	Metals, Heavy ; Water Pollutants, Chemical
Language	English
Publishing date	2021-02-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	445336-0
ISSN	1559-0720 ; 0163-4984
ISSN (online)	1559-0720
ISSN	0163-4984
DOI	10.1007/s12011-021-02629-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Dwarf eelgrass (Zostera noltii) leaf fatty acid profile during a natural restoration process: Physiological and ecological implications

Duarte, Bernardo / Matos, Ana Rita / Pedro, Sílvia / Marques, João Carlos / Adão, Helena / Caçador, Isabel

Ecological indicators. 2019 Nov., v. 106

2019

Abstract: Seagrass beds are among the most relevant ecosystem engineers, providing essential ecosystem services for the surrounding coastal communities. Alongside, these ecosystems are among the most threaten in the world, and thus several restoration projects ... ...

Abstract	Seagrass beds are among the most relevant ecosystem engineers, providing essential ecosystem services for the surrounding coastal communities. Alongside, these ecosystems are among the most threaten in the world, and thus several restoration projects have been developed in the past years. Seagrasses are important sources of essential fatty acids (FA) for animals, which are unable to synthetize them. During the seagrass growth and photochemical maturation, there is a membrane remodelling, where some fatty acids are synthetized. When analysing the FA changes at different development stages, one of the first noticeable changes is the increase in C16:1t (trans-hexadecenoic acid), associated to an increase in the chloroplast membrane fluidity, essential for the efficient energy transduction processes to occur in the thylakoids. Also, interesting to observe are the high levels of omega-3 and -6 (30–43% and 18–31% of total fatty acid content, respectively) present in this seagrass, reinforcing the nutritional value of this species as source of essential fatty acids for the primary consumers. Additionally, it is possible to observe that in the more mature plants there is a high leaf concentration of C18:3. Recent reports suggest that C18:3 can act as a direct scavenger of reactive oxygen species (ROS), indicating a lower stress level, as suggested by the higher photochemical efficiency previously observed. Moreover, it is also interesting to observe that total long-chain polyunsaturated fatty acids (LC-PUFAs) content show a significant increase with the biomass development. These LC-PUFAs are not produced by higher plants and their production in animals occurs at low rates, suggesting they may have as origin the microalgae in the grass surface, adding another important ecosystem service to these prairies, as support for microalgae development and carriers of LC-PUFAs into the food web.This membrane remodelling appears to be on the basis of the photochemical maturation of these seagrasses observed in previous studies and can be used as potential and efficient tool to monitor the development stage of the prairies and its physiological status in future restoration processes. Moreover, it becomes evident that highly developed seagrass beds are crucial food source providers in terms of essential fatty acids to the estuarine heterotrophic life.
Keywords	Zostera noltei ; animals ; biomass ; chloroplast membranes ; ecosystem engineers ; ecosystem services ; ecosystems ; energy ; environmental indicators ; essential fatty acids ; estuaries ; fatty acid composition ; grasses ; leaves ; long chain polyunsaturated fatty acids ; mature plants ; membrane fluidity ; microalgae ; nutritive value ; photochemistry ; physiological state ; prairies ; reactive oxygen species ; seagrasses ; thylakoids ; trophic relationships
Language	English
Dates of publication	2019-11
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2019.105452
Database	NAL-Catalogue (AGRICOLA)

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Article: Structural and functional composition of fish communities associated to Zostera noltii meadows as a response to natural habitat recovery

Castro, Nuno / Penedos, Cláudia / Félix, Pedro / Chainho, Paula / Pereira, Tadeu / Costa, Maria José / Almeida, Armando J / Adão, Helena / Costa, José Lino

Ecological indicators. 2019 Nov., v. 106

2019

Abstract: During 2008, the Zostera noltii meadows located in the lower Mira estuary (SW Portugal) disappeared completely. However, during 2009, symptoms of natural recovery were observed, and in 2015 totally mature patches were detected. This allowed to ... ...

Abstract	During 2008, the Zostera noltii meadows located in the lower Mira estuary (SW Portugal) disappeared completely. However, during 2009, symptoms of natural recovery were observed, and in 2015 totally mature patches were detected. This allowed to investigate the temporal and spatial distribution patterns of the composition and structure of ichthyofaunal communities under two distinct habitat ecological conditions: before the collapse of mature vegetation of seagrass beds, in the 1980s (historical data), and after the natural habitat recovery process (new data). Significant differences were detected in the fish communities i) before and after the recovery process; and ii) in the seagrass beds and adjacent bare areas before the collapse, but no differences were observed after the natural recovery between seagrass fish communities and bare adjacent areas. Fish communities of seagrass beds in the 1980s were, in general, characterized by higher values of species richness, diversity and abundance. Apparently, the collapse of seagrass beds led to the disappearing of some fish species and to a decrease in abundance of others. Generally, such fish species have not returned to the system or recovered the population status during this early recovery process. This study addressed significant shifts that occurred in the lower Mira estuary fish communities in the last 30 years. Climate change may have influenced those alterations, although the event of the seagrass beds collapse seems to be the main driver of the community shifts.
Keywords	Zostera noltei ; climate change ; environmental indicators ; estuaries ; fish ; fish communities ; habitats ; meadows ; seagrasses ; species richness ; Portugal
Language	English
Dates of publication	2019-11
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2019.05.066
Database	NAL-Catalogue (AGRICOLA)

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Article: Food sources of macrobenthos in an estuarine seagrass habitat (Zostera noltii) as revealed by dual stable isotope signatures

Vafeiadou, Anna-Maria / Materatski, Patrick / Adão, Helena / De Troch, Marleen / Moens, Tom

Marine biology. 2013 Sept., v. 160, no. 9

2013

Abstract: Stable carbon and nitrogen isotope analysis was used to examine the resources and position of macrobenthos in an estuarine seagrass food web in two sampling moments, during summer and winter. The contribution of each food source to the carbon ... ...

Abstract	Stable carbon and nitrogen isotope analysis was used to examine the resources and position of macrobenthos in an estuarine seagrass food web in two sampling moments, during summer and winter. The contribution of each food source to the carbon requirements of consumers was estimated by a mixing model. The used carbon sources were largely seagrass associated, although seagrass tissues were utilized by only few species, and equally contributed to microphytobenthos and suspended particulate organic matter. Based on isotopic data, Lucinidae bivalves have an alternative trophic pathway via symbiosis with chemoautotrophic bacteria. Resource utilization inside and adjacent to seagrass beds did not differ significantly, implying that seagrass-associated inputs extend well beyond the borders of the vegetation patches.
Keywords	Bivalvia ; Zostera ; bacteria ; carbon ; food webs ; foods ; habitats ; models ; nitrogen ; particulates ; stable isotopes ; summer ; symbiosis ; vegetation ; winter
Language	English
Dates of publication	2013-09
Size	p. 2517-2523.
Publishing place	Springer-Verlag
Document type	Article
ZDB-ID	1117-4
ISSN	1432-1793 ; 0025-3162
ISSN (online)	1432-1793
ISSN	0025-3162
DOI	10.1007/s00227-013-2238-0
Database	NAL-Catalogue (AGRICOLA)

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Article: Sample acidification effects on carbon and nitrogen stable isotope ratios of macrofauna from a Zostera noltii bed

Vafeiadou, Anna-Maria / Adão, Helena / De Troch, Marleen / Moens, Tom

Marine and freshwater research. 2013, v. 64, no. 8

2013

Abstract: Acidification treatment has been used in most stable isotope studies to eliminate inorganic non-dietary carbon, allowing δ13C measurement of organic carbon needed for trophic studies. Because only limited information about the acidification effects on ... ...

Abstract	Acidification treatment has been used in most stable isotope studies to eliminate inorganic non-dietary carbon, allowing δ13C measurement of organic carbon needed for trophic studies. Because only limited information about the acidification effects on isotopic ratios exists in the literature, we provide an assessment of such effects for a wide range of benthic macroinvertebrates from estuarine intertidal sediments with sparse Zostera noltii Hornem. vegetation. Our results revealed only few significant δ13C shifts for macrobenthos; however, δ13C decrease after acidification was substantial for several species. We conclude that acidification is not necessary for removing calcium carbonate in a majority of macrobenthos, but we also suggest preliminary testing before deciding it can be omitted. The magnitude of the δ15N shifts was substantial for some species and variability in δ15N values of replicate acidified samples exceeded that of non-acidified samples. Therefore, sample acidification should be avoided for δ15N determination. Moreover, acidification effects vary considerably among species belonging to a single class, rendering generalisations from single-species information potentially spurious.
Keywords	Zostera ; acidification ; calcium carbonate ; carbon ; estuarine sediments ; macroinvertebrates ; nitrogen ; species differences ; stable isotopes ; vegetation
Language	English
Size	p. 741-745.
Publishing place	CSIRO Publishing
Document type	Article
ZDB-ID	1283028-8
ISSN	1323-1650
ISSN	1323-1650
DOI	10.1071/MF12169
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Benthic nematode biodiversity of the Abzu, Tiamat and Michael Ivanov mud volcanoes located along the SWIM fracture zone (Gulf of Cadiz)

Ramalho, Sofia P. / Ribeiro, Carlos / Hensen, Christian / Scholz, Florian / Nuzzo, Marianne / Terrinha, Pedro / Adao, Helena

2018

Abstract: Studies that focus on meiofaunal assemblages of deep-sea mud volcanoes show an unpredictable abundance and diversity in a clear response to the different environmental conditions of the seeped sediment. The mud volcanoes Abzu, Tiamat and M. Ivanov (ATI), ...

Abstract	Studies that focus on meiofaunal assemblages of deep-sea mud volcanoes show an unpredictable abundance and diversity in a clear response to the different environmental conditions of the seeped sediment. The mud volcanoes Abzu, Tiamat and M. Ivanov (ATI), are located along the SWIM1 fracture zone, in front of the accretionary wedge of the Gulf of Cadiz (AWGC). The geological setting and the fluid geo- chemical characteristics of the ATI mud volcanoes are differ- ent from those located within the AWGC. The main aim of this study is to describe and compare the spatial and vertical distributions of the meiofauna and nematode assemblage s from the ATI mud volcanoes, the Porto mud volcano located in the AWGC, and a non-seep site (Site 2) as reference. The pore-water on the uppermost sediment layers has composi- tions close to the near-bottom seawater. The meiofauna abun- dances were generally lower and the vertical distribution of the assemblages showed a typical pattern, gradually decreas- ing towards depth. The lack of spatial patterns of the standing stocks contrasts with the spatial variability of diversity and biomass, related to the differences in the nematode assem- blages that are distinct between ATI, Site 2 and the Porto mud volcano. The ATI and Site 2 assemblages are similar to deep-sea non-seep habitats, and are clearly coupled with the environmental conditions of the bottom seawater. No evi- dence of seep conditions favouring the development of specialised fauna were found. The lower diversity and the presence of higher dominance species could be driven by dis- tinct seepage conditions of the Porto mud volcano.
Subject code	550
Language	English
Publisher	Springer
Publishing country	de
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Do nematode and macrofauna assemblages provide similar ecological assessment information?

Patrício, Joana / Adão, Helena / Neto, João M / Alves, Ana S / Traunspurger, Walter / Marques, João Carlos

Ecological indicators. 2012 Mar., v. 14, no. 1

2012

Abstract: Do nematode and macrofauna assemblages provide similar ecological assessment information? To answer this question, in the summer of 2006, subtidal soft-bottom assemblages were sampled and environmental parameters were measured at seven stations covering ... ...

Abstract	Do nematode and macrofauna assemblages provide similar ecological assessment information? To answer this question, in the summer of 2006, subtidal soft-bottom assemblages were sampled and environmental parameters were measured at seven stations covering the entire salinity gradient of the Mondego estuary. Principal components analysis (PCA) was performed on the environmental parameters, thus establishing different estuarine stretches. The ecological status of each community was determined by applying the Maturity Index and the Index of Trophic Diversity to the nematode data and the Benthic Assessment Tool to the macrofaunal data. Overall, the results indicated that the answer to the initial question is not straightforward. The fact that nematode and macrofauna have provided different responses regarding environmental status may be partially explained by local differentiation in microhabitat conditions, given by distinct sampling locations within each estuarine stretch and by different response-to-stress times of each benthic community. Therefore, our study suggests that both assemblages should be used in marine pollution monitoring programs.
Keywords	Nematoda ; estuaries ; fauna ; microhabitats ; monitoring ; pollution ; principal component analysis ; salinity ; summer
Language	English
Dates of publication	2012-03
Size	p. 124-137.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2036774-0
ISSN	1470-160X
ISSN	1470-160X
DOI	10.1016/j.ecolind.2011.06.027
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Drop impact on soft surfaces: beyond the static contact angles.

Rioboo, Romain / Voué, Michel / Adão, Helena / Conti, Joséphine / Vaillant, Alexandre / Seveno, David / De Coninck, Joël

Langmuir : the ACS journal of surfaces and colloids

2010 Volume 26, Issue 7, Page(s) 4873–4879

Abstract: The wettability of cross-linked poly(dimethylsiloxane) elastomer films and of octadecyltrichlorosilane self-assembled monolayers with water has been measured and compared using various methods. Contact angle hysteresis values were compared with values ... ...

Abstract	The wettability of cross-linked poly(dimethylsiloxane) elastomer films and of octadecyltrichlorosilane self-assembled monolayers with water has been measured and compared using various methods. Contact angle hysteresis values were compared with values reported in the literature. A new method to characterize advancing, receding contact angles, and hysteresis using drop impact have been tested and compared with usual methods. It has been found that for the rigid surfaces the drop impact method is comparable with other methods but that for elastomer surfaces the hysteresis is function of the drop impact velocity which influences the extent of the deformation of the soft surface at the triple line.
Language	English
Publishing date	2010-04-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	2005937-1
ISSN	1520-5827 ; 0743-7463
ISSN (online)	1520-5827
ISSN	0743-7463
DOI	10.1021/la9036953
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Article: Do nematode and macrofauna assemblages provide similar ecological assessment information?

Patrício, Joana / Adão, Helena / Neto, João M. / Alves, Ana S. / Traunspurger, Walter / Marques, João Carlos

Ecological indicators

Volume v. 14,, Issue no. 1

Abstract	Do nematode and macrofauna assemblages provide similar ecological assessment information? To answer this question, in the summer of 2006, subtidal soft-bottom assemblages were sampled and environmental parameters were measured at seven stations covering the entire salinity gradient of the Mondego estuary. Principal components analysis (PCA) was performed on the environmental parameters, thus establishing different estuarine stretches. The ecological status of each community was determined by applying the Maturity Index and the Index of Trophic Diversity to the nematode data and the Benthic Assessment Tool to the macrofaunal data. Overall, the results indicated that the answer to the initial question is not straightforward. The fact that nematode and macrofauna have provided different responses regarding environmental status may be partially explained by local differentiation in microhabitat conditions, given by distinct sampling locations within each estuarine stretch and by different response-to-stress times of each benthic community. Therefore, our study suggests that both assemblages should be used in marine pollution monitoring programs.
Keywords	principal component analysis ; estuaries ; monitoring ; fauna ; summer ; pollution ; salinity ; Nematoda ; microhabitats
Language	English
Document type	Article
ISSN	1470-160X
Database	AGRIS - International Information System for the Agricultural Sciences and Technology

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