Abstract:
:This work evaluates the impact of phytoplankton blooms on metal availability driven by dredging, in an area of the Sado estuary (Portugal), subject to ongoing dredging operations during the entire sampling period. In situ changes of chlorophyll a concentration, bioavailable trace metals (Cr, Mn, Co, Ni, Cu, Zn, Cd and Pb) in the water column, metal content in particulate matter, and particulate metal to bioavailable metal ratios were investigated during pre-bloom, bloom and post-bloom conditions to evaluate the potential of the phytoplankton-mediated metal removal. Metals in particulate matter significantly enhanced concomitantly with the decline of metals (mostly Mn, Co, Cu, Zn, and Pb) in the water column during the bloom, in comparison with pre- and post-bloom periods. During the peak of the phytoplankton bloom, bioavailable Cr, Mn, Co, Ni, Cu, Zn, Cd and Pb were reduced to 30, 99, 100, 87, 98, 72, 84 and 88% of their original levels (pre-bloom values). Copper and Pb, and to a lesser extent, Zn and Mn, were ranked as more particle reactive. Volume particulate matter concentrations of Mn, Ni, Cu and Pb much higher than the bioavailable concentrations, indicated that phytoplankton is likely to be a dominant sink of these metals during the bloom period. Thus, Mn, Ni, Cu and Pb are prone to be transferred and biomagnified into the marine food web. These results highlight phytoplankton blooms as important biological sinks of trace metals during dredging, which should be taken into consideration in planning and management of dredging, to minimise environmental impacts and protect estuarine and coastal ecosystems.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Cabrita MT,Brito P,Caçador I,Duarte Bdoi
10.1016/j.marenvres.2019.104837subject
Has Abstractpub_date
2019-11-06 00:00:00pages
104837eissn
0141-1136issn
1879-0291pii
S0141-1136(19)30391-5pub_type
杂志文章abstract::Several genes normally induced by estradiol (E(2)) in female fish, those for vitellogenins (VTGs) and zona radiata proteins (ZRPs), are also inducible in males exposed to estrogenic chemicals. Male sheepshead minnows (SHM) were exposed to both E(2) and para-nonylphenol (NP), at several doses and times to determine a d...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2004.03.043
更新日期:2004-08-01 00:00:00
abstract::Climate change is a global threat for marine ecosystems, their biodiversity and consequently ecosystem services. In the marine realm, marine protected areas (MPAs) were designated to counteract regional pressures, but they might be ineffective to protect vulnerable species and habitats, if their distribution is affect...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2020.105230
更新日期:2021-01-01 00:00:00
abstract::This paper examines the potential availability to a demersal fish of cadmium and zinc associated with digested sewage sludge, via a food chain as well as directly from the sludge, and the tissue distribution and possible excretion of any accumulated cadmium and zinc. Radioactive tracer techniques were used in order to...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(00)00249-x
更新日期:2001-06-01 00:00:00
abstract::Nonylphenol (NP) is a breakdown product of alkylphenol polyethoxylates (APEs), an important class of non-ionic surfactants that are widely used in many detergent formulations and plastic products for industrial and domestic use. A complex microbial degradation pattern, characterized by the formation of several metabol...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(00)00081-7
更新日期:2000-07-01 00:00:00
abstract::Spatial and temporal increases of hypoxia in estuaries are of major environmental concern. Since mitochondria consume most of the oxygen in the cell, we examined the potential role of mitochondrial gene and protein expression in adaptation to chronic hypoxia in the grass shrimp Palaemonetes pugio. Grass shrimp were ex...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2008.02.046
更新日期:2008-07-01 00:00:00
abstract::The use of fish in environmental monitoring has become increasingly important in recent years as anthropogenic substances, many of which function as prooxidants, are accumulating in aquatic environments. We have measured a battery of antioxidant defenses as a measure of oxidative status, as well as protein carbonylati...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2008.04.002
更新日期:2008-08-01 00:00:00
abstract::Globally, non-native species (NNS) have been introduced and now often entirely replace native species in captive aquaculture; in part, a result of a perceived greater resilience of NSS to climate change and disease. Here, the effects of ocean acidification and warming on metabolic rate, feeding rate, and somatic growt...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2018.10.003
更新日期:2018-11-01 00:00:00
abstract::Intertidal blue mussels, Mytilus edulis, experience hypoxia reoxygenation during tidal emersion and resubmersion cycles, and this is often suggested to represent a major stress for the animals, especially for their respiratory tissues, the gills. We exposed mussels to experimental short and prolonged anoxia and subseq...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2013.09.007
更新日期:2013-12-01 00:00:00
abstract::Harmful algal blooms (HAB) may impose a serious threat to aquatic lives and human health. We determined the effects of a toxic dinoflagellate Alexandrium tamarense (clone ATCIO1, isolated from Hong Kong coastal waters) on the energy budget, quantified as scope for growth (SFG), and the growth rate of the manila clam R...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(01)00117-9
更新日期:2002-03-01 00:00:00
abstract::The coast of Jiangsu Province in China - where Ulva prolifera has always been firstly spotted before developing into green tides - is uniquely characterized by a huge intertidal radial mudflat. Results showed that: (1) propagules of U. prolifera have been consistently present in seawater and sediments of this mudflat ...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2012.10.007
更新日期:2013-02-01 00:00:00
abstract::The fin whale (Balaenoptera physalus) is the most abundant and widespread mysticete species in the Mediterranean Sea, found mostly in deep, offshore waters of the western and central portion of the region. In the Mediterranean, this species is known to feed mainly on krill, in contrast to its Atlantic counterpart, whi...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2017.03.009
更新日期:2017-06-01 00:00:00
abstract::The role of seawater NOM in reducing metal toxicity for marine organisms is not well understood. We investigated the effects of five different marine NOMs (two autochthonous, one allochthonous, two of mixed origin, at 8 mg C/L), three metals (6 μg Cu/L; 20 μg Pb/L; 25 μg Zn/L), and combinations between them, to early ...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2017.12.009
更新日期:2018-04-01 00:00:00
abstract::Natural storms are able to determine reworking of seabed up to considerable depths and favour suspension of sediment-associated chemicals. Yet, a direct link between exposure to resuspended contaminants and the biological effects on marine organisms have to be fully established. We exposed adults of a suspension feede...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2020.104950
更新日期:2020-06-01 00:00:00
abstract::The mangrove swamp environment constitutes a sulphide rich habitat harbouring some thioautotrophic organisms. The ciliate Zoothamnium niveum and the nematode Eubostrichus dianae, both known to live associated with bacterial sulphide-oxidizing ectosymbionts, were analysed as positive controls by Raman microspectrometry...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2010.02.001
更新日期:2010-06-01 00:00:00
abstract::Faunal assemblages of subtidal sedimentary environments are key components of coastal ecosystems. Benthic communities inhabiting the coastal zone near urban centers in Concepción Bay (Chile) have been described as highly disturbed (i.e. impoverished in diversity and species richness). This is due to the frequent prese...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2017.07.022
更新日期:2017-09-01 00:00:00
abstract::Coralline macroalgae are globally distributed rhodopyhtes that remove carbon from their immediate environment and transform it into carbonate sediments through the senescence of their calcified tissues. In this study, the calcium carbonate (CaCO3) stocks in the tissue of Jania adhaerens and sediments in Tanjung Adang ...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2020.105156
更新日期:2020-12-01 00:00:00
abstract::The seas worldwide are threatened by a "new" source of pollution. Munitions dumped into the seas worldwide will corrode and start to leak. Their impacts on the environment and on human health are now more than ever subject of scientific research. Bivalves are a first choice bioindicator and their importance is demonst...
journal_title:Marine environmental research
pub_type: 杂志文章,评审
doi:10.1016/j.marenvres.2020.105006
更新日期:2020-06-01 00:00:00
abstract::The purpose of this paper is to describe the status and general faunal composition of sponge reefs in the Georgia Basin (GB), British Columbia, Canada. Fourteen distinct deep-water glass sponge (Hexactinellid) reefs have been mapped using multibeam bathymetry and sidescan sonar in the GB. Seven of these have been surv...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2008.09.002
更新日期:2008-12-01 00:00:00
abstract::Oil pollution of the oceans has been a problem ever since man began to use fossil fuels. Biodegradation by naturally occurring populations of micro-organisms is a major mechanism for the removal of petroleum from the environment. To examine the effects of crude oil pollution on intertidal bacteria, we repeated the sam...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(99)00080-x
更新日期:2000-06-01 00:00:00
abstract::Dongsha Atoll (also known as the Pratas Islands), the northernmost atoll in the South China Sea, experiences two contrasting physical phenomena: repetitive anomalies of the sea surface temperature exceeding the coral bleaching threshold and regular effects of the world's strongest internal waves resulting in the rhyth...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2017.04.003
更新日期:2017-06-01 00:00:00
abstract::We investigated the long-term effects of contaminants in sediment from Baltimore Harbor, MD, USA, on a burrowing amphipod (Leptocheirus plumulosus) via a full life-cycle laboratory exposure. Contaminants in the Baltimore Harbor sediment included PAHs (10,800 ng/g), PCBs (152 ng/g), and heavy metals (including As, Cd, ...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2006.03.006
更新日期:2006-08-01 00:00:00
abstract::Habitat mapping is essential for the management and conservation of coastal marine habitats. However, accurate and up-to-date habitat maps are rarely available for the marine realm. In this study, we mapped the coastal marine habitats of >400 km of coastline in the north-western United Arab Emirates (UAE) using a comb...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2020.105095
更新日期:2020-10-01 00:00:00
abstract::The aim of this work was to characterize the cholinesterases from gills of Crassostrea rhizophorae in order to use them as biomarkers. Gills were homogenized and then centrifuged (9,000 x g, 4 degrees C, 30 min). S9 and Triton X-100 S9 treated (TX S9) fractions were employed as enzyme source. Km(ap) and Vmax were esti...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(02)00136-8
更新日期:2002-09-01 00:00:00
abstract::This study assesses the relative importance of water and sediments as vectors of TBT uptake in the sediment-dwelling suspension feeder, Ruditapes decussatus. Accumulation of TBT was determined in R. decussatus exposed for 60 days to moderately high but environmentally realistic levels of TBT in water (100 ng Snl(-1)) ...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(02)00104-6
更新日期:2002-08-01 00:00:00
abstract::Despite the pollution of microplastics being internationally recognized, the understanding of their behaviors in marine environment is still developing. Microplastics are ubiquitous in the marine environment, with the potential to cause harm to marine ecosystem. Here, we would classify the behaviors of microplastics a...
journal_title:Marine environmental research
pub_type: 杂志文章,评审
doi:10.1016/j.marenvres.2015.10.014
更新日期:2016-02-01 00:00:00
abstract::Certain environmentally persistent compounds can adversely affect reproduction by acting as steroid hormone agonists or antagonists. The goal of the present study was to determine the developmental stage most susceptible to exogenous hormone (estradiol and testosterone) exposure using a small teleost model. In the fir...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/s0141-1136(00)00068-4
更新日期:2000-07-01 00:00:00
abstract::To investigate the biological impact of polycyclic aromatic hydrocarbons (PAHs) on reproductive system, scallops Chlamys farreri were continuously exposed to benzo[a]pyrene (BaP) (0.5, 3, 10microgL(-1)) during 15 days. DNA damage and histological alterations were examined in female gonad. DNA strand break levels signi...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2008.10.006
更新日期:2009-02-01 00:00:00
abstract::The aim of this investigation was to test the hypothesis that fasting-induced augmented lysosomal autophagic turnover of cellular proteins and organelles will reduce potentially harmful lipofuscin (age-pigment) formation in cells by more effectively removing oxidatively damaged proteins. An animal model (marine snail-...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2015.04.001
更新日期:2015-06-01 00:00:00
abstract::The ability of 17α-ethinylestradiol (EE2) to elevate vitellogenin levels were investigated in male flounder Platichthys flesus and vitellogenin concentrations in flounders from the Danish coastal environment were determined. Male flounders were exposed to 17α-ethinylestradiol (EE2) via food or water. Average vitelloge...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2013.09.002
更新日期:2013-12-01 00:00:00
abstract::The ecological effects of tuna fish farms are largely undocumented. This study confirmed their high capacity to attract surrounding wild fish. The aggregation effect persisted year round, without detectable seasonal differences. Farm impact was restricted to close proximity of the sea cages, and was more prominent ove...
journal_title:Marine environmental research
pub_type: 杂志文章
doi:10.1016/j.marenvres.2017.10.015
更新日期:2017-12-01 00:00:00