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Dr. Nancy Grimm
@DrNitrogen
Ecosystem scientist, streams, nitrogen, cities, deserts, SETS resilience, global environmental change. Mom of 2 grown men and Oma to 2 grandchildren. She/her
Joined August 2012
1,570 Following
4,724 Followers

Dr. Nancy Grimm’s Tweets

Dr. Nancy Grimm
@DrNitrogen
Wonderful news for a wonderful colleague - congratulations
@BryanBrayboy
on this well-deserved honor!
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ASU Social Embeddedness
@ASUEmbeddedness
Congratulations to someone we deeply admire and aspire to be more like! "Being the only is lonely; our work should be to fill spaces so that Indigenous presence is abundant." @BryanBrayboy receives 2023 ASU MLK Jr. Faculty Servant-Leadership Award news.asu.edu/20230103-presi
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Dr. Nancy Grimm
@DrNitrogen
Judos especially to
@jrblasz
for leading this deep dive into the world's data on hypoxic rivers - unsurprisingly, mostly from more developed countries - and for her awesome graphics!
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Erin Hotchkiss
@FluvialBenthos
"Extent, patterns, and drivers of #hypoxia in the world's #streams and #rivers" published in #ASLO_Letters - important contribution by @jrblasz @lekoenig @francineaquatic @LlGomezGener @ChrisLDutton @aliceinH2Oland @DrNitrogen @AquaBgc @DrAquaMatt et al. aslopubs.onlinelibrary.wiley.com/doi/10.1002/lo
Map of measurements across the globe and summary plot of the negative association between mean dissolved oxygen and proportion of dissolved oxygen measurements less than 2 mg/L.
Three panel plot showing (A) duration of hypoxic events (most are 1-6 hours, but some last for weeks and months), (B) map with location of hypoxic events in the contiguous United States, and (C) timing of the start/end of hypoxic events.
Three panel plot showing (A) relative influence of different predictors of hypoxia (highest were maximum water temp, stream slope, mean air temp), (B) the positive relationship between water temperature and probability of hypoxia for different river slopes and sizes (small, flat rivers are the most likely), and (C) the associations between land use and probability of hypoxia (wetland and urban have higher probability).
Map showing the relationship between air-water gas exchange rates and net ecosystem production, where points are color ramped by hypoxic frequency. Streams and rivers had a higher proportion of hypoxic measurements in low gas exchange sites with more negative net ecosystem production.
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Dr. Nancy Grimm
@DrNitrogen
A group of former students and postdocs wrote this paper about research I've done over my career. Really honored by this tribute, and of course, acknowledge that they & others were huge contributors to the research without whom it wouldn't have happened
sciencedirect.com
Learning from arid and urban aquatic ecosystems to inform more sustainable and resilient futures
The hydrology and aquatic ecology of arid environments has long been understudied relative to temperate regions. Yet spatially and temporally intermit…
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Dr. Nancy Grimm
@DrNitrogen
Yay for CAP! Great job leadership team, esp #notwitter Childers for leading the way on CAP LTER-V!
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Arizona State University Research
@ASUResearch
For 25 years, @ASU scientists in @caplter have studied Phoenix as an urban ecosystem. With renewed funding from the @NSF, they'll continue to guide us in creating a sustainable and equitable future. Read the full story➡️ research.asu.edu/life-city-asu- #ASUResearch #NSFfunded
Woman looking at camera and smiling, sitting next to a stream in front of tall green grass, wearing a light beige farmer's hat, light green shirt and khaki pants. She's holding a yellow legal pad and a pen.
Two side-by-side landscape images: on the left, a desert landscape in the foreground with sand, desert plant life, cactus, with mountains and moderately cloudy blue sky in the background. On the right a rocky, gray landscape in foreground with large, snow-capped mountains and moderately cloudy blue sky in the background.
Five men and women in tshirts and jeans wearing hats while working tasks related to research with the city skyline of downtown Phoenix in the background.
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Dr. Nancy Grimm
@DrNitrogen
Felicitaciones,
@JorgeRH2O
! This is great news - I look forward to visiting you there (but don't be a stranger around here, either).
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Jorge Ramos, PhD
@JorgeRH2O
It's official! Starting Oct 1, I will be the new Executive Director for Jasper Ridge Biological Preserve @stanfordjrbp at @Stanford! As a long-term field ecologist, I've always enjoyed working in field stations & outdoors! It's now my turn to lead a new chapter for Jasper Ridge!
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Jorge with searsville lake and Jasper Ridge field station in the background
Rodolfo and Jorge doing research on oak herbivory at Jasper Ridge
A tour of SACNAS students learning about redwoods at Jasper Ridge
Ecology and natural history students group picture at Jasper Ridge with rainbow in background
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Dr. Nancy Grimm
@DrNitrogen
I am stunned and disturbed by the senseless killing of hydrology colleague
@tmeixner
by a former student. My deepest condolences to his UA colleagues and especially his family. Such a senseless tragedy. Tom was an excellent scientist and a generous mentor. What a terrible loss.
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Dr. Nancy Grimm
@DrNitrogen
This can't fail to be a REALLY COOL opportunity.
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Rebecca Hale
@UrbanH2O
I've finally landed @SmithsonianEnv and I'm so excited to be here! Come join me! We have great fellowship opportunities for graduate students and postdocs! Deadline to apply is Nov 1, so contact me ASAP if you're interested in opportunities in stream and urban ecosystems science!
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Dr. Nancy Grimm
@DrNitrogen
this is pretty damn cool
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David Gelles
@dgelles
🚨EXCLUSIVE: Yvon Chouinard, who founded the outdoor apparel maker Patagonia and became a reluctant billionaire with his unconventional spin on capitalism, has given away the company. All Patagonia’s profits will now be used to fight climate change.🧵 nytimes.com/2022/09/14/cli
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