Marine Strategy Framework Directive Archives - One Earth - One Ocean e. V.

Is the microplastic selective according to the habitat? Records inamphioxus sands, Mäerl bed habitats and Cymodocea nodosa habitats

Birgit Westermayr — Fri, 27 Aug 2021 10:19:10 +0000

Monia Renzi, Andrea Blašković, Paolo Fastelli, Massimiliano Marcelli, Cristiana Guerranti, Susanna Cannas, Lorenzo Barone, Francesca Massara,

Is the microplastic selective according to the habitat? Records inamphioxus sands, Mäerl bed habitats and Cymodocea nodosa habitats,

Marine Pollution Bulletin,
Volume 130,
2018,
Pages 179-183,
ISSN 0025-326X,

Abstract:

This study estimated for the first time the total loads of
plastic litter (macro- meso- and micro-plastics) in sediments of
different habitat types from the Northern Adriatic Sea. Samples were
collected in March 2016. The sampling sites were settled in shoreline,
on the C. nodosa bottoms, Amphioxus sands, and Mäerl bed habitats.
Microplastics items were present in all sampling site and ranging within
137-703 items/kg d.w. from Mäerl bed habitat to the shoreline. In C.
nodosa bottoms 170 items/kg d.w. were found, while in Amphioxus sands
were recorded on average 194 items/kg d.w. Due to the absence of
statistical associations among litter levels and abundance of B.
lanceolatum in the study area, this research present the needs to
develop a new method and more research to for the evaluation of how much
the interrelation between sensible habitats and microplastic exist.

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Interaction between loggerhead sea turtles (Caretta caretta) and marine litter in Sardinia (Western Mediterranean Sea)

guenther — Sun, 02 Mar 2014 15:24:58 +0000

Andrea Camedda, Stefano Marra, Marco Matiddi, Giorgio Massaro, Stefania 
Coppa, Angelo Perilli, Angelo Ruiu, Paolo Briguglio, G. Andrea de Lucia, 
Interaction between loggerhead sea turtles (Caretta caretta) and marine 
litter in Sardinia (Western Mediterranean Sea), Marine Environmental 
Research, Available online 21 December 2013, ISSN 0141-1136, 
http://dx.doi.org/10.1016/j.marenvres.2013.12.004.
(http://www.sciencedirect.com/science/article/pii/S014111361300216X)
Abstract: Anthropogenic debris in the environment affects many species 
that accidentally ingest it. The aim of this study is to evaluate the 
quantity and composition of marine litter ingested by loggerheads in 
Sardinia, thus supplying for the lack of data in the existing literature 
for this area. Seventeen of the 121 (14.04%) monitored turtles presented 
debris in their digestive tracts. Litter in faecal pellet of alive 
individuals (n = 91) and in gastro-intestinal contents of dead ones (n = 
30) was categorized, counted and weighed. User plastic was the main 
category of ingested debris with a frequency of occurrence of 13.22% of 
the total sample, while sheet (12.39%) and fragments (9.09%) were the 
most relevant sub-categories. This study highlights for the first time 
the incidence of litter in alive turtles in Sardinia. This contribution 
improves the knowledge about marine litter interaction on Caretta 
caretta as bio-indicator. Results will be useful for the Marine Strategy 
implementation.
https://mail.noris.net/src/download.php?startMessage=16&passed_id=16&mailbox=Texte&ent_id=14.4&passed_ent_id=14

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Enhanced desorption of persistent organic pollutants from microplastics under simulated physiological conditions

guenther — Sun, 29 Dec 2013 11:18:19 +0000

Adil Bakir, Steven J. Rowland, Richard C. Thompson, Enhanced desorption 
of persistent organic pollutants from microplastics under simulated 
physiological conditions, Environmental Pollution, Volume 185, February 
2014, Pages 16-23, ISSN 0269-7491, 
http://dx.doi.org/10.1016/j.envpol.2013.10.007.
(http://www.sciencedirect.com/science/article/pii/S0269749113005277)
Abstract: Microplastics have the potential to uptake and release 
persistent organic pollutants (POPs); however, subsequent transfer to 
marine organisms is poorly understood. Some models estimating transfer 
of sorbed contaminants to organisms neglect the role of gut surfactants 
under differing physiological conditions in the gut (varying pH and 
temperature), examined here. We investigated the potential for 
polyvinylchloride (PVC) and polyethylene (PE) to sorb and desorb 
14C-DDT, 14C-phenanthrene (Phe), 14C-perfluorooctanoic acid (PFOA) and 
14C-di-2-ethylhexyl phthalate (DEHP). Desorption rates of POPs were 
quantified in seawater and under simulated gut conditions. Influence of 
pH and temperature was examined in order to represent cold and warm 
blooded organisms. Desorption rates were faster with gut surfactant, 
with a further substantial increase under conditions simulating warm 
blooded organisms. Desorption under gut conditions could be up to 30 
times greater than in seawater alone. Of the POP/plastic combinations 
examined Phe with PE gave the highest potential for transport to organisms.

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