2019 Hudson Data Jam Competition

Making data "sing" through creative expression

Now in its sixth year, the Hudson Data Jam Competition challenges students to creatively tell the science stories of the Hudson River watershed.

***Level 1: Oxygen Levels and Invasive Aquatic Plants

***Level 1: Oxygen Levels and Invasive Aquatic Plants

This dataset is in our set of highlighted projects, which means we've developed an expanded metadata file with more background information, resources, and sample inquiry questions. 

Invasive water chestnut in the Hudson River

Scientists sampled the dissolved oxygen levels in three different aquatic habitats: Trapa natans (water chestnut beds), Vallisneria americana (water celery beds), and the open river channel. All samples were taken from the freshwater tidal section of the Hudson River.

Trapa is an introduced floating plant present in the Hudson River. Vallisneria is a native submersed (underwater) plant present in the Hudson River.

Healthy aquatic habitats usually have dissolved oxygen levels at or above 80% saturation. Most fish and other organisms cannot live below 30% dissolved oxygen saturation, which is considered hypoxic. A dissolved oxygen level of 0% saturation is called anoxic, which means there is no dissolved oxygen present.

To see an interactive graphic that shows how oxygen levels change in different vegetation beds in the Hudson River over time, click here.

Data were published in "Vascular Plants as Engineers of Oxygen in Aquatic Systems" by Nina Caraco, Jonathan Cole, Stuart Findlay, and Cathleen Wigand in Bioscience (2006) 56(3): 219-225.


Click here for Oxygen Levels & Aquatic Plants Data

Click here for expanded metadata & resources


Before using this dataset, you may wish to complete the associated lesson on "How Does Water Chestnut Impact the Hudson River?"

Data Source: Caraco et al. 2006

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