scholarly journals Trophic transfer of hexabromocyclododecane in the terrestrial and aquatic food webs from an e-waste dismantling region in East China

2017 ◽  
Vol 19 (2) ◽  
pp. 154-160 ◽  
Author(s):  
Chaofei Zhu ◽  
Pu Wang ◽  
Yingming Li ◽  
Zhaojing Chen ◽  
Honghua Li ◽  
...  
Keyword(s):  
Food Webs ◽  
Trophic Transfer ◽  
East China ◽  
The Real ◽  
Real Environment ◽  
Aquatic Food Webs ◽  
Aquatic Food

Trophic transfer of HBCD isomers in both the terrestrial and aquatic food webs from the real environment.

scholarly journals Elevated temperature and browning increase dietary methylmercury, but decrease essential fatty acids at the base of lake food webs

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pianpian Wu ◽  
Martin J. Kainz ◽  
Fernando Valdés ◽  
Siwen Zheng ◽  
Katharina Winter ◽  
...  
Keyword(s):  
Climate Change ◽  
Fatty Acids ◽  
Organic Matter ◽  
Food Webs ◽  
Essential Fatty Acids ◽  
Trophic Levels ◽  
Climate Change Scenarios ◽  
Essential Nutrients ◽  
Aquatic Food Webs ◽  
Aquatic Food

AbstractClimate change scenarios predict increases in temperature and organic matter supply from land to water, which affect trophic transfer of nutrients and contaminants in aquatic food webs. How essential nutrients, such as polyunsaturated fatty acids (PUFA), and potentially toxic contaminants, such as methylmercury (MeHg), at the base of aquatic food webs will be affected under climate change scenarios, remains unclear. The objective of this outdoor mesocosm study was to examine how increased water temperature and terrestrially-derived dissolved organic matter supply (tDOM; i.e., lake browning), and the interaction of both, will influence MeHg and PUFA in organisms at the base of food webs (i.e. seston; the most edible plankton size for zooplankton) in subalpine lake ecosystems. The interaction of higher temperature and tDOM increased the burden of MeHg in seston (< 40 μm) and larger sized plankton (microplankton; 40–200 μm), while the MeHg content per unit biomass remained stable. However, PUFA decreased in seston, but increased in microplankton, consisting mainly of filamentous algae, which are less readily bioavailable to zooplankton. We revealed elevated dietary exposure to MeHg, yet decreased supply of dietary PUFA to aquatic consumers with increasing temperature and tDOM supply. This experimental study provides evidence that the overall food quality at the base of aquatic food webs deteriorates during ongoing climate change scenarios by increasing the supply of toxic MeHg and lowering the dietary access to essential nutrients of consumers at higher trophic levels.

scholarly journals Eutrophication induces shifts in the trophic position of invertebrates in aquatic food webs

Ecology ◽  
2020 ◽  
Author(s):  
Gea H. Lee ◽  
J. Arie Vonk ◽  
Ralf C.M. Verdonschot ◽  
Michiel H.S. Kraak ◽  
Piet F.M. Verdonschot ◽  
...  
Keyword(s):  
Food Webs ◽  
Trophic Position ◽  
Aquatic Food Webs ◽  
Aquatic Food

scholarly journals Element ratios and aquatic food webs

Estuaries ◽  
2002 ◽  
Vol 25 (4) ◽  
pp. 694-703 ◽  
Author(s):  
R. E. Turner
Keyword(s):  
Food Webs ◽  
Element Ratios ◽  
Aquatic Food Webs ◽  
Aquatic Food

Experimental Aquatic Food Webs: Interactions between Two Predators and Two Prey

1990 ◽  
Vol 135 (2) ◽  
pp. 176-204 ◽  
Author(s):  
Henry M. Wilbur ◽  
John E. Fauth
Keyword(s):  
Food Webs ◽  
Aquatic Food Webs ◽  
Aquatic Food
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