Zooplankton Archives - One Earth - One Ocean e. V. https://oneearth-oneocean.com/en/category/zooplankton-en/ Eine weitere WordPress-Website Tue, 20 Dec 2022 21:41:58 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.5 https://oneearth-oneocean.com/wp-content/uploads/2022/08/cropped-oeoo-logo-unterzeile-blau-1-32x32.jpg Zooplankton Archives - One Earth - One Ocean e. V. https://oneearth-oneocean.com/en/category/zooplankton-en/ 32 32 Changes in the composition of ichthyoplankton assemblage and plastic debris in mangrove creeks relative to moon phases. https://oneearth-oneocean.com/en/atlantic-en/2016/changes-in-the-composition-of-ichthyoplankton-assemblage-and-plastic-debris-in-mangrove-creeks-relative-to-moon-phases/ Wed, 11 May 2016 19:29:41 +0000 https://oneearth-oneocean.com/2016/05/11/changes-in-the-composition-of-ichthyoplankton-assemblage-and-plastic-debris-in-mangrove-creeks-relative-to-moon-phases/ http://onlinelibrary.wiley.com/doi/10.1111/jfb.12838/full http://onlinelibrary.wiley.com/wol1/doi/10.1111/jfb.12838/abstract Lima, A. R. A., Barletta, M., Costa, M. F., Ramos, J. A. A., Dantas, D. V., Melo, P. A. M. C., Justino, A. K. S. and Ferreira, G. V. B. (2015), Changes in the composition of ichthyoplankton assemblage and plastic debris in mangrove creeks relative to moon phases. Journal of Fish Biology. doi: 10.1111/jfb.12838 Abstract Lunar influence on the distribution of fish larvae, zooplankton and plastic debris in mangrove creeks of the Goiana Estuary, Brazil, was studied over a lunar cycle. Cetengraulis edentulus, Anchovia clupeoides and Rhinosardinia bahiensis were the most abundant fish larvae (56·6%), independent of the moon phase. The full moon had a positive influence on the abundance of Gobionellus oceanicus, Cynoscion acoupa and Atherinella brasiliensis, and the new moon on Ulaema lefroyi. The full and new moons also influenced the number of zoeae and megalopae of Ucides cordatus, protozoeae and larvae of caridean shrimps, and the number of hard and soft plastic debris, both 5 mm. Micro and macroplastics were present in samples from all 12 creeks studied, at densities similar to the third most abundant taxon, R. bahiensis. Cetengraulis edentulus and R. bahiensis showed a strong positive correlation with the last quarter moon, when there was less zooplankton available in the creeks and higher abundance of microplastic threads. Anchovia clupeoides, Diapterus rhombeus, U. lefroyi and hard microplastics were positively associated with different moon phases, when calanoid copepods, Caridean larvae and zoeae of U. cordatus were highly available in the creeks. Cynoscion acoupa, G. oceanicus and A. brasiliensis were strongly associated with the full moon, when protozoeae of caridean shrimps and megalopae of U. cordatus were also highly available, as were hard and soft macroplastics, paint chips (

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]]> http://onlinelibrary.wiley.com/doi/10.1111/jfb.12838/full

http://onlinelibrary.wiley.com/wol1/doi/10.1111/jfb.12838/abstract

Lima, A. R. A., Barletta, M., Costa, M. F., Ramos, J. A. A., Dantas, D.
V., Melo, P. A. M. C., Justino, A. K. S. and Ferreira, G. V. B. (2015),
Changes in the composition of ichthyoplankton assemblage and plastic
debris in mangrove creeks relative to moon phases. Journal of Fish
Biology. doi: 10.1111/jfb.12838

Abstract
Lunar influence on the distribution of fish larvae, zooplankton and
plastic debris in mangrove creeks of the Goiana Estuary, Brazil, was
studied over a lunar cycle. Cetengraulis edentulus, Anchovia clupeoides
and Rhinosardinia bahiensis were the most abundant fish larvae (56·6%),
independent of the moon phase. The full moon had a positive influence on
the abundance of Gobionellus oceanicus, Cynoscion acoupa and Atherinella
brasiliensis, and the new moon on Ulaema lefroyi. The full and new moons
also influenced the number of zoeae and megalopae of Ucides cordatus,
protozoeae and larvae of caridean shrimps, and the number of hard and
soft plastic debris, both <5 and >5 mm. Micro and macroplastics were
present in samples from all 12 creeks studied, at densities similar to
the third most abundant taxon, R. bahiensis. Cetengraulis edentulus and
R. bahiensis showed a strong positive correlation with the last quarter
moon, when there was less zooplankton available in the creeks and higher
abundance of microplastic threads. Anchovia clupeoides, Diapterus
rhombeus, U. lefroyi and hard microplastics were positively associated
with different moon phases, when calanoid copepods, Caridean larvae and
zoeae of U. cordatus were highly available in the creeks. Cynoscion
acoupa, G. oceanicus and A. brasiliensis were strongly associated with
the full moon, when protozoeae of caridean shrimps and megalopae of U.
cordatus were also highly available, as were hard and soft
macroplastics, paint chips (<5 mm) and soft microplastics. The results reinforce the role of mangrove creeks as nursery habitats. The moon phases influenced the distribution of fish larvae species, zooplankton and plastic debris by changing their compositions and abundances in the mangrove creeks of the Goiana Estuary when under the influence of different tidal current regimes. Keywords: fish larvae; lunar cycle; microplastics; north-east Brazil; tropical estuary

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]]> Sea polluted by paint dust https://oneearth-oneocean.com/en/zooplankton-en/2014/sea-polluted-by-paint-dust/ https://oneearth-oneocean.com/en/zooplankton-en/2014/sea-polluted-by-paint-dust/#respond Wed, 17 Sep 2014 20:07:53 +0000 https://oneearth-oneocean.com/2014/09/17/sea-polluted-by-paint-dust/ http://news.sciencemag.org/chemistry/2014/08/sea-polluted-paint-dust Sea polluted by paint dust By Erik Stokstad 7 August 2014 1:15 pm Even when the sea looks clean, its surface can be flecked with tiny fragments of paint and fiberglass. That?s the finding from a study that looked for plastic pollution in the uppermost millimeter of ocean. The microscopic fragments come from the decks and hulls of boats, and they could pose a threat to tiny creatures called zooplankton, which are an important part of the marine food web. The discovery is ?continuing to open our eyes to how many small synthetic particles are in the environment,? says Kara Law, an oceanographer who studies plastic pollution at the Sea Education Association in Woods Hole, Massachusetts, and wasn?t involved in the study.

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]]> http://news.sciencemag.org/chemistry/2014/08/sea-polluted-paint-dust Sea polluted by paint dust By Erik Stokstad 7 August 2014 1:15 pm Even when the sea looks clean, its surface can be flecked with tiny fragments of paint and fiberglass. That?s the finding from a study that looked for plastic pollution in the uppermost millimeter of ocean. The microscopic fragments come from the decks and hulls of boats, and they could pose a threat to tiny creatures called zooplankton, which are an important part of the marine food web. The discovery is ?continuing to open our eyes to how many small synthetic particles are in the environment,? says Kara Law, an oceanographer who studies plastic pollution at the Sea Education Association in Woods Hole, Massachusetts, and wasn?t involved in the study.

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]]> https://oneearth-oneocean.com/en/zooplankton-en/2014/sea-polluted-by-paint-dust/feed/ 0 Evidence of microplastics in samples of zooplankton from Portuguese coastal waters https://oneearth-oneocean.com/en/research-en/2014/evidence-of-microplastics-in-samples-of-zooplankton-from-portuguese-coastal-waters/ https://oneearth-oneocean.com/en/research-en/2014/evidence-of-microplastics-in-samples-of-zooplankton-from-portuguese-coastal-waters/#respond Sun, 09 Mar 2014 22:45:54 +0000 https://oneearth-oneocean.com/2014/03/09/evidence-of-microplastics-in-samples-of-zooplankton-from-portuguese-coastal-waters/ J.P.G.L. Frias, V. Otero, P. Sobral, Evidence of microplastics in samples of zooplankton from Portuguese coastal waters, Marine Environmental Research, Available online 13 January 2014, ISSN 0141-1136, http://dx.doi.org/10.1016/j.marenvres.2014.01.001. (http://www.sciencedirect.com/science/article/pii/S0141113614000099) Abstract: Records of high concentrations of plastic and microplastic marine debris floating in the ocean have led to investigate the presence of microplastics in samples of zooplankton from Portuguese coastal waters. Zooplankton samples collected at four offshore sites, in surveys conducted between 2002 and 2008, with three different sampling methods, were used in this preliminary study. A total of 152 samples were processed and microplastics were identified in 93 of them, corresponding to 61% of the total. Costa Vicentina, followed by Lisboa, were the regions with higher microplastic concentrations (0.036 and 0.033 no. m-3) and abundances (0.07 and 0.06 cm3 m-3), respectively. Microplastic: zooplankton ratios were also higher in these two regions, which is probably related to the proximity of densely populated areas and inputs from the Tejo and Sado river estuaries. Microplastics polymers were identified using Micro Fourier Transformed Infrared Spectroscopy (μ-FTIR), as polyethylene (PE), polypropylene (PP) and polyacrylates (PA). The present work is the first report on the composition of microplastic particles collected with plankton nets in Portuguese coastal waters. Plankton surveys from regular monitoring campaigns conducted worldwide may be used to monitor plastic particles in the oceans and constitute an important and low cost tool to address marine litter within the scope of the Marine Strategy Framework Directive (2008/56/EC). Keywords: Microplastics; plastic; zooplankton; MSFD; FTIR; Portugal

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]]> J.P.G.L. Frias, V. Otero, P. Sobral, Evidence of microplastics in samples of zooplankton from Portuguese coastal waters, Marine Environmental Research, Available online 13 January 2014, ISSN 0141-1136, http://dx.doi.org/10.1016/j.marenvres.2014.01.001. (http://www.sciencedirect.com/science/article/pii/S0141113614000099) Abstract: Records of high concentrations of plastic and microplastic marine debris floating in the ocean have led to investigate the presence of microplastics in samples of zooplankton from Portuguese coastal waters. Zooplankton samples collected at four offshore sites, in surveys conducted between 2002 and 2008, with three different sampling methods, were used in this preliminary study. A total of 152 samples were processed and microplastics were identified in 93 of them, corresponding to 61% of the total. Costa Vicentina, followed by Lisboa, were the regions with higher microplastic concentrations (0.036 and 0.033 no. m-3) and abundances (0.07 and 0.06 cm3 m-3), respectively. Microplastic: zooplankton ratios were also higher in these two regions, which is probably related to the proximity of densely populated areas and inputs from the Tejo and Sado river estuaries. Microplastics polymers were identified using Micro Fourier Transformed Infrared Spectroscopy (μ-FTIR), as polyethylene (PE), polypropylene (PP) and polyacrylates (PA). The present work is the first report on the composition of microplastic particles collected with plankton nets in Portuguese coastal waters. Plankton surveys from regular monitoring campaigns conducted worldwide may be used to monitor plastic particles in the oceans and constitute an important and low cost tool to address marine litter within the scope of the Marine Strategy Framework Directive (2008/56/EC). Keywords: Microplastics; plastic; zooplankton; MSFD; FTIR; Portugal

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]]> https://oneearth-oneocean.com/en/research-en/2014/evidence-of-microplastics-in-samples-of-zooplankton-from-portuguese-coastal-waters/feed/ 0