How your data are being used

The plant and animal phenology observations that Nature's Notebook participants have been contributing tell some interesting stories! We invite you to read about some of our most recent discoveries from Nature's Notebook data below. Check back often; we update this page frequently!

Roots, as well as leaves, are affected by shifting temperatures

Plants rely on their roots for delivery of water and nutrients, not to mention for the structure that anchors them to the earth. Just as new leaves or needles grow in the springtime, roots also have a period of growth, or production. To better understand the relationship between leaf and root production, the authors of this study evaluated patterns in the timing of leaf and root phenology in deciduous and coniferous trees.

NATURE'S NOTEBOOK RESULTS WEBINAR 2014: Year end summary

Learn what your 2014 observations reveal, and the ways scientists are using your observations. We cover results from the 2014 Campaigns, as well as a range of other results from observers across the country.

New models incorporating Nature’s Notebook data predict when leaves will change color in the fall

There has thus far been no clear agreement on whether autumn phenology events such as leaf color are more influenced by day length or temperature in temperate systems. The authors found that both have an influence.

Phenology helps to predict the expansion of extremely allergenic ragweed

Temperature and daylight length strongly influence the range of ragweed, an invasive weed. Ragweed can only reproduce in areas where its seeds can mature before the winter frost. This means that as the climate warms, ragweed will be able to grow in more places.

Dogwood Campaign Results

Volunteers have been tracking cloned plants for over 50 years, and these observations have been invaluable for documenting how plants are responding to a variable and changing climate. However, lilacs don't grow very well in the southernmost parts of the US. A dogwood was recently cloned for distribution in southeastern states to address part of this data gap, and Nature's Notebook participants began submitting observations in 2013.

Early Results from the PopClock Project

Early results are coming in from the PopClock project, a collaborative effort with the University of Maryland Center for Environmental Studies.

Nature's Notebook results webinar 2013: Why do scientists care so much about what's happening in your yard?

Spring of 2012 arrived remarkably early in much of the U.S... but what about 2013? What do those observations that you've been diligently collecting and reporting in your yard say about this year? How are scientists and decision-makers using these observations? View our 2013 results webinar video below to learn more or download the slides.

Data from Nature’s Notebook are bringing landscape change into focus in Alaska

Spring leaf-out phenology observations have proven valuable in predicting how arctic plant communities may change in coming decades. Models used to predict changes in plant communities have traditionally taken phenology into account, but have used a single date for leaf-out averaged across all plant species. As participants in Nature’s Notebook know first-hand, the timing of leaf-out varies by species.

Phenology supports decision making in natural resources management

Phenology data can inform invasive species management by identifying periods of reproduction and green-up that are critical for mechanical removal or herbicide application. Buffelgrass (Pennisetum ciliare), an aggressive non-native species, is spreading rapidly and introducing fire to the sensitive Sonoran Desert.

Spring of 2012 was the earliest on record in North America

The spring of 2012 broke many records across the eastern portion of the U.S. for early warm temperatures. Though we humans may celebrate the early return to warm temperatures following a cold, dark winter, plants and animals may not fare as well.

Nature’s Notebook

You are here