@pondscience

Asst. prof @CornellEEB | Freshwater scientist | ponds, ecology, biogeochemistry, carbon, food webs, conservation | mom in science | she/her

blogs.cornell.edu/holgersonlab/
Joined January 2017
  • Tweets1.1K
  • Following548
  • Followers1.8K
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New pub alert #AGUPubs! Small, shallow waterbodies are among the most productive freshwater ecosystems on the planet! In this @GLEONetwork #ponding collaboration, we examined ecosystem metabolism in 26 shallow waterbodies in N. America and Europe. agupubs.onlinelibrary.wiley.โ€ฆ (1/4)

Freshwater Biogeochemical Hotspots: High Primary Production and Ecosystem Respiration in Shallow...

Shallow and small waterbodies have high but variable rates of gross primary production and respiration Depth plays a large role in metabolism rates Shallow waterbodies are some of the most produ...

agupubs.onlinelibrary.wiley.com
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Meredith Holgerson retweeted
ASLO
@aslo_org18 Dec 2024
๐ŸŒŸ๐Ÿ†๐ŸŒŸ Each year, #ASLO proudly honors our Fellows and Sustaining Fellows for their incredible contributions to #aquaticscience! Our members are the driving force behind our mission to advance limnology and oceanography. Thank you for your dedication and service! Together, we continue to foster an international community, create knowledge, and promote scientific stewardship. Get inspired: aslo.org/announcing-2024-aslโ€ฆ #ASLOFellows #Limnology #Oceanography #MarineScience @closburn @mindym1101 @pondscience @IanH77 @MBLScience @MicrobialPlanet @TonyaDelSontro @hamdanlab @fcelter @USLTER @fsu_stukel_lab @mark_scheuerell @rutgers_rucool
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I'm so excited to share some of our new work mapping ponds! PhD student Denghong's remote sensing skills are enviable :) Now he's working on mapping ponds throughout NYS. Stay tuned!
XiangtaoXu@XiangtaoX31 Oct 2024
New scalable method to accurately detect small (yet important) water bodies down to 0.1ha with spectral-temporal-spatial features of Sentinel-1/2 data. Check out our fresh #RSE paper tinyurl.com/mvntdw86 with @SheelBansal @pondscience and Xiaolin Zhu's lab at HK PolyU.
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Meredith Holgerson retweeted
Adam Heathcote@AJ_Heathcote23 Oct 2024
Do you have results related to lake mixing to share at the @aslo_org Aquatic Sciences Meeting? Join @pondscience @mindym1101 @LienneSethna and me in "SS07: Ecological impacts of infrequent water column mixing events" Deadline extended to 10/28! aslo.org/charlotte-2025/

2025 Aquatic Sciences Meeting - ASLO

The theme of the 2023 Aquatic sciences Meeting is Resilience and Recovery in Aquatic Systems. We encourage submissions that examine these topics and invite you to contribute special sessions on...

aslo.org
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Replying to @pondscience @GLEONetwork
Our study provides more evidence that ponds are truly biogeochemical hotspots! This work was such a fun collaboration years in the making. @JoeRabaey @DRichardsonLab @jbcotner @EvoEcoEric and many more not on here! (4/4)
picture of wooded pond

ALT picture of wooded pond

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Replying to @pondscience @GLEONetwork
We also explored how well metabolism models (designed for bigger, deeper lakes) work for ponds. Metabolism models work best in sites that are more productive and have bigger diel oxygen swings. Models performed poorly in less productive / more heterotrophic systems (3/4)
See Figure 1 of paper for description

ALT See Figure 1 of paper for description

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Replying to @pondscience @GLEONetwork
We observed high rates of GPP (mean 8.4 g O2 m-3 d-1) and R (mean 9.1 g O2 m-3 d-1), while NEP varied from net heterotrophic to autotrophic. Metabolism rates were affected by depth and plant cover; the shallowest waterbodies had the highest GPP, R, and most variable NEP. (2/4)
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๐ŸŒŠ Call for Papers! ๐Ÿ“ Special Issue of Limnology & Oceanography Letters #ASLO_Letters ๐ŸŒŽ๐Œ๐ž๐ญ๐ก๐š๐ง๐ž in Freshwater, Brackish and Marine Environments ๐ŸŒ Paper proposal by Sep 30, 2024 Full manuscripts by Jun 30, 2025 Details: aslo.org/call-for-proposals-โ€ฆ #Methane @aslo_org
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Audrey Goeckner@PondGator13 Jun 2024
๐ŸšจNew pub alert!๐Ÿ—ž๏ธCheck out our work in @JBiogeochem comparing net denitrification (N-removal) vs. net N-fixation (N-addition) in FL stormwater ponds (SWPs) vs natural undisturbed ponds. Spoiler: SWPs are more often net N-fixing compared to natural ponds link.springer.com/article/10โ€ฆ
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๐Ÿ‚ What Leaves Leave When Leaves Leave Trees? ๐Ÿค” While this may sound like the title of a Dr. Seuss book, itโ€™s one of our new special collections now accepting submissions! Learn more: lite.spr.ly/6005By4F ๐ŸŽจ: @Squidfan @theAGU @wileyearthspace #AGUPubs #SciArt
An illustration of the life cycle of a leaf.

ALT An illustration of the life cycle of a leaf.

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#ASLO24 - We welcome your abstract submissions for our special session on the role of macrophytes in aquatic biogeochemical cycles! Hope to see you in Madison this June.
ASLO 2024, 2-7 June 2024 SS06: The role of macrophytes in aquatic biogeochemical cycles Session organizers: Charlotte Grasset, Sheel Bansal, Pascal Bodmer, Meredith Holgerson, and Cristina Ribaudo We welcome your abstracts! Abstracts due 28 February 2024 Brief description: Macrophytes alter the physical, chemical, and biological environments of shallow areas in aquatic ecosystems (e.g., wetlands, ponds, lakes, and rivers), and can play a significant role in biogeochemical processes (e.g., GHG production, carbon burial, nitrogen cycling, net primary production, organic matter decomposition). We welcome contributions from studies that explore how macrophytes influence these biogeochemical cycles. We also welcome studies that scale local measurements to landscape scales, demonstrate implications of land management, or experimentally test mechanisms.

ALT ASLO 2024, 2-7 June 2024 SS06: The role of macrophytes in aquatic biogeochemical cycles Session organizers: Charlotte Grasset, Sheel Bansal, Pascal Bodmer, Meredith Holgerson, and Cristina Ribaudo We welcome your abstracts! Abstracts due 28 February 2024 Brief description: Macrophytes alter the physical, chemical, and biological environments of shallow areas in aquatic ecosystems (e.g., wetlands, ponds, lakes, and rivers), and can play a significant role in biogeochemical processes (e.g., GHG production, carbon burial, nitrogen cycling, net primary production, organic matter decomposition). We welcome contributions from studies that explore how macrophytes influence these biogeochemical cycles. We also welcome studies that scale local measurements to landscape scales, demonstrate implications of land management, or experimentally test mechanisms.

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Less than a week to apply for our lab manager position! Apply by 1/21. Contact me directly if you have questions.
Meredith Holgerson@pondscience2 Jan 2024
The Holgerson Lab of Aquatic Ecology is hiring a lab manager! Please spread the word. Apply and find more details: cornell.wd1.myworkdayjobs.coโ€ฆ. Contact me directly with questions.
Hiring - Lab Manager Holgerson Lab of Freshwater Ecology Cornell University Photo of Cornell's Experimental Pond Facility

ALT Hiring - Lab Manager Holgerson Lab of Freshwater Ecology Cornell University Photo of Cornell's Experimental Pond Facility

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This looks like a great read. Climate warming --> browning of northern terrestrial food webs (and it appears to be new C, not old!). Use of museum specimens and experiments. Congrats on the study, @pmanlick!
This Post is from an account that no longer exists. Learn more
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The Holgerson Lab of Aquatic Ecology is hiring a lab manager! Please spread the word. Apply and find more details: cornell.wd1.myworkdayjobs.coโ€ฆ. Contact me directly with questions.
Hiring - Lab Manager Holgerson Lab of Freshwater Ecology Cornell University Photo of Cornell's Experimental Pond Facility

ALT Hiring - Lab Manager Holgerson Lab of Freshwater Ecology Cornell University Photo of Cornell's Experimental Pond Facility

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Apply by January 21st for full consideration!
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An incredible resource on measuring all things carbon in wetlands and waterbodies.
Sheel Bansal@SheelBansal28 Nov 2023
New methods review on measuring wetland carbon fluxes #wetlands #climate link.springer.com/article/10โ€ฆ
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Weโ€™re excited to share our recent paper examining how the density of a submersed macrophyte (Ceratophyllum demersum) controls aquatic greenhouse gases! This work was developed and led by my grad student, Meredith Theus. agupubs.onlinelibrary.wiley.โ€ฆ (1/4)

Submersed Macrophyte Density Regulates Aquatic Greenhouse Gas Emissions

In systems dominated by non-rooting plants, plants may have a larger effect on water column CO2 and CH4 dynamics than on greenhouse gas production in the sediment High density stands of a submers...

agupubs.onlinelibrary.wiley.com
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High plant densities released the most GHGs, likely due to competition + plant die-off. Effects were strongest in the water column, with little effect on sed. production (likely due to limited roots). Plant density may help explain variability + seasonality of aquatic GHGs! (4/4)
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We conducted a 2-month mesocosm study where we manipulated C. demersum density (0, 10, 20, or 30 individuals) and measured GHG emissions, GHG concentrations in the surface and porewater, plant growth, and water chemistry. (3/4)
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Shallow freshwaters are large sources of greenhouse gases (GHGs) and are often dominated by submersed plants. Yet, the role these plants have in affecting GHG emissions is unclear, especially when considering how variable plant populations are across time and space. (2/4)
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