climate change and toxic chemiclas
TRANSCRIPT
1
Priority chemical pollutionnon toxic environment
GoesFoundation.comGLOBAL OCEANIC ENVIRONMENTAL SURVEY
At GOES Foundation, we are marine biologists, 30 years field experience
Life support systems for public aquaria and marine mammals
Environmental projects and effluent treatment systems in India and China we know about environmental pollution and what is takes to destroy and ecosystem
3
Billions of tonnes of Industrial waste enter rivers every year
4
from many different sources
National Geographic
Barrow, Alaska
Haina, Dominican Republic. Photo Source: Eduardo Munoz
Air pollution from domestic and industrial sources
Freshwater pollution……Un-sustainable Economies
Economies of countries including India, China are un-sustainable unless they prevent aquatic environmental pollution• 90% of surface water is polluted with priority chemicals• 75% of all aquifer water is grossly contaminated• All freshwater pollution eventually ends up in the oceans
8
China textile town
9
It all eventually ends up in the oceans
Mass of garbage is 6 times the mass of plankton in garbage patches
46,000 pieces of plastic per square kilometre, killing a million seabirds and 100,000 marine mammals each year
12
Priority chemicals impact on microscopic plankton (primary productivity)
Priority Chemicals, what are they?Chemicals or substances that pose an unreasonable risk to; • Public health, carcinogenic, mutagenic, teratogenic, neurological,
endocrine disrupters and auto-immune disorders• Environment, water and food security, we depend upon the marine
ecosystem, if we loose it, the terrestrial system will fail
• 90% of all cancers are now known to be caused by environmental factors• 800 billion year on treating neurological problems• 200,000 tonnes of priority substances are manufactured in Europe every year.
Source of Priority chemicals
domestic sources
Europe and North America
Industrial pollution
S. America, Africa and Asia
Sun Block oxybenzone Kills corals at 0.06 ug/l
May be primary reason for coral bleaching. Environmental Contamination and Toxicology ISSN: 1432-0703 (electronic version) Journal no. 244
Fire retardant
Carpets, furniture, fabrics
PBDE 60 to 600 ug/l found in blood of children and marine mammals
Persistent, bio-accumulated endocrine disrupter, almost as dangerous as PCBs
Tooth paste Triclosan Endocrine disrupter, skin irritation, antibiotic resistance
Shampoo Triethanolamine
Buffering agent Carcinogenic
Plastic micro particles
Cosmetics, clothing and industrials
TBT, DBT, PFAS, Bisphenol
Combination of plastic and priority chemicals. Injects chemicals into marine life
Highly toxic, endocrine disrupter, neurological impact, allergic sensitization
Domestic
Transformers and capacitors.
PCBs No safe level
Banned for many applications, but still is use. Millions of tonnes manufactured, only 1% has reached the oceans. Extremely toxic.http://www.wsn.org/
Flame retardant, released into the oceans in huge amounts in Asia
PBDE No safe level
Some classes have been banned. Persistent, bio-accumulated endocrine disrupter, almost as dangerous as PCBs
Anti-fouling paint, plasticizer in plastic
Organic tineTBT, DBT
No safe level
Bio-accumulated Carcinogenic, extremely toxic. 1000 tonnes cold kill all life in the oceans. We manufacture circa 30,000 tonnes/year. http://www.wwf.org.uk/filelibrary/pdf/factsheet_organotins_food.pdf
Many industrial and chemical products
Mercury forming methly mercury
No safe level
Highly toxic, endocrine disrupter, neurological impact, allergic sensitization
Industrial
Every fish, shrimp and living organism in the oceans contain priority chemicals
Ref MARBEF1. PCB concentration in the North sea, 8.8 ng/l, concentration in biomass 600 to 1200 ng/g
(dry weight)2. PCB concentration in Antarctic 1.2 ng/l, concentration in biomass is the same as North Sea
600 to 1200 ng/g (dry weight)3. The above demonstrates that hydrophobic particles, concentrate priority substances.
PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern oceanJoiris, C.R.; Overloop, W. (1991). PCBs and organochlorine pesticides in phytoplankton and zooplankton in the Indian sector of the Southern ocean. Antarctic Science 3: 371-377 18
Priority chemical concentrations
19
Southern Ocean and Human health
Southern Ocean“shark have levels mercury & PCB’s 10 times higher than safety levels recommended by the Foods Standards Authority of Australia and New Zealand”
20
Bib and whiting had the highest concentrations of PCBs: 810 - 3200 ng/g
UK, National Health Service“Pregnant women should not eat more than two oily fish per week from the North Sea because of pollutants such as dioxins and PCBs (polychlorinated biphenyls)”
Oily fish are meant to be healthy ?
Voorspoels, S.; Covaci, A.; Maervoet, J.; De Meester, I.; Schepens, P. (2004). Levels and profiles of PCBs and OCPs in marine benthic species from the Belgian North Sea and the Western Scheldt Estuary. Mar. Pollut. Bull. 49(5-6): 393-404
Farmed salmon, upper limit by EPA 48 ug/kg, current levels range from 2 to 20 ug/Kg.
Contaminant levels in Norwegian farmed Atlantic salmon (Salmo salar) in the 13-year period from 1999 to 2011Ole Jakob Nøstbakkena, , , doi:10.1016/j.envint.2014.10.008
• Scientific Reports 6, Article number: 18573 (2016)• doi:10.1038/srep18573
41.0 mg/kg lipid PCB is the toxicity threshold published for marine mammals. The average concentration is lipid of European Orca is over >200mg/kg
This orca was found washed up on the British coast in 2001. ©CSIP-ZSL
PBDE is almost as toxic as PCBs, mammals concentrate toxin in fat tissue as well as milk
706 ng/g of PBDE endocrine disrupterEnviron. Sci. Technol., 2004, 38 (16), pp 4293–4299DOI: 10.1021/es0495011
PCBs in the Blubber Beached Sperm whales up to 5000 ng/g dry weight
Daphnis De Pooter (2013): PCB and heavy metals in beached sperm whales. Available from http://www.coastalwiki.org/wiki/PCB_and_heavy_metals_in_beached_sperm_whales The Coastal Wiki is hosted and developed by the Flanders Marine Institute (VLIZ)
PBDE levels as high as 590 ppb have been measured in the breast milk of Canadian women
Published by the Environmental Working Grouphttps://groups.google.com/group/goes-foundation/attach/7b3001c818044/MothersMilk.pdf?part=0.1&authuser=0
The implications of priority substances on Marine Biodiversity
95% of all life in the oceans are microscopic plankton responsible for up to 80% of all our Oxygen
30% of CO2 fixation. Atmospheric oxygen levels are declining, and CO2 is increasing
Dalhousie University Nova ScotiaPrimary productivity has dropped by 40% since the 1950s. Nature 466, 591–596 (29 July 2010) doi:10.1038/nature09268
NASA from satellite imagery shows that primary productivity is dropping by 1% every year.
The drop in productivity is not due to increasing temperature.Priority chemical product started in the early 1950s, is there a Connection with the drop in productivity?
29
pH and ocean acidificationCO2 dissolves into the water and drops the pH
At current rates in 25 to 40 years, oceanic pH will drop from pH8.06 to pH7.95, at which point there may be a cascade destabilization of the marine ecosystem.
The ability of the marine ecosystem to sequester CO2 will decline in proportion to the productivity
Anthropogenic CO2 emission account for up to 3.75% of the total CO2 going into the atmosphere
each year. (from IPCC)
Data from IPCC
pH at 2015
pH at 2050
Representative Concentration Pathways (RCPs) 8.5combines assumptions about high population and relatively slow income growth with modest rates of technological change and energy intensity improvements
30
Consequences
When the pH reaches 7.95 in 25 to 40 years, the consequences could be;
• No more marine teleost fish• No fish then no dolphins, whales, seals,
penguins, seabirds or polar bears• Food supply for 1.5 billion people under
threat• Coccolithophores will be replaced by
diatoms, fixation of atmospheric CO2 drops by at least 50% climate change accelerates
For discussion?
If priority chemicals are implicated in reducing primary productivity, allowing CO2 to increase, could we reverse the trend?
Graph from MIT
32
Opportunities… for a non toxic environment
• Communicate the problem• Development of new domestic
products, cosmetics, cleaning agents, fire retardants
• Pharmaceuticals, domestic treatment systems
• Technology to recycle waste, eg PCs, mobile phones
• Prevention of pollution, disposal stratigies & catchment area management
• Water treatment technology to remove the chemicals from drinking water and wastewater.
33
Reduction of oceanic pollution would allow the marine ecosystem a chance to recover…
and this could happen very quickly…
34
Trees take over 100 years to remove CO2 carbon from the atmosphere
35Marine Algae takes a few hours / days
36
Marine Bacteria take a few minutes
If we remove the brakes on marine productivity by preventing pollution, the marine ecosystem could
recover very quickly.
The prevention of priority chemicals getting into the air and water, may be our best hope to protect not only the
oceans but the terrestrial ecosystem.but
we need to take action now we may only have 25 years to provide a fix.
39
You can’t control water you don’t measure.
GOES, Global Oceanic Environmental Survey
• Collect information• Raise awareness of the issues• Provide possible solutions
40
GoesFoundation.comGLOBAL OCEANIC ENVIRONMENTAL SURVEY
non toxic environment