Download - Planetary Boundaries. Dow TNC Collaboration
Planetary Boundaries
Dow TNC Collaboration
Dow TNC Collaboration
Dow TNC CollaborationDow Texas Operations: Non attainment zone for ozone pollution
Ozone forms from precursor pollutants: NOx, VOCsProspect of tightened standards in future
Emissions Abatement through Reforestation?
Dow TNC Collaboration
1000 acre project
$470,000
122-202 tons NOx
removed over 30 years
Cost competitive andadditional benefits:
Other health effectsHabitat creationCarbon credits
Dow TNC CollaborationAnalysis: What Is the Value of Water — for Today and Tomorrow?
So how can companies such as Dow account for the value of water and the role that marshes, forests and other ecosystems play in maintaining water flow?
And how can those companies use this understanding to plan for current and future availability of water from the Brazos to both its operations and stakeholders in the area — including nature?
Dow TNC CollaborationAnalysis: What Is the Value of Water — for Today and Tomorrow?
-Brazos River demand exceeds supply for 10 to 20% of year; Demand will increase over 50% in next 50 years
-Used demand, climate change model to predict water availability; synergistic effects apparent
-Identifying "green" and "gray" infrastructure options that could help maintain flow in the river; and
-Analyzing the economics of those options to understand which ones will produce the most value for water users, including Dow, and the environment.
Dow TNC Collaboration
Strategy:
Intersex
Hermes Aphrodite
Hermaphrodite
Dissection and Histology
Ovary Testis
Dissection and Histology
Dissection and Histology
Frequency of Intersex in Green Frogs
Prevalence of ‘Intersex Ponds’
Category Intersex in :
Undeveloped 0 of 2 PondsAgriculture 4 of 11Suburban 5 of 6Urban 3 of 4
Focus on the Suburbs:The Ponds of Avon
Follow Up Study Using 28 Ponds in One Suburban Town:
Intersex Incidence: 18% of IndividualsIntersex Prevalence: 94% of PondsCaffeine: 71% of Ponds
Next Step: What’s in the water?
Larry Barber, USGS
Geoff Giller, Yale Max Lambert, Yale
Water Sampling
• 6 bottles (three each, surface and groundwater)
• Field Measurements– Conductivity, TDS,
DO, Temperature, Depth
Frog Collection
• Green metamorphs• 20 - 50 per pond
Conductivity and Development Intensity
Contaminants: Preliminary Results
• Lithium• Carbamazepine (anticonvulsant/mood
disorders)• Sulfamethoxazole (antibiotic)• Gadolinium (Sewer Adjacent Ponds)• Atrazine not detected
Estrogens in Forested, Sewer, and Septic Ponds
Landscape Influences
Landscape Influences
Sex Ratio and Development Intensity
Sex Ratio and Development Intensity
What do we do?
Household Scale Septic Filter?
Conclusions- Intersex Frogs Common, Sex Ratio Variable
- Land Cover Strongly Predictive (Suburbs)
- Contamination Diverse, Pervasive; Implies Domestic Origin
- Implications for Sex Determination