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Bartlett: Needle Diseases of Conifers

Needlecast and needle blight are terms applied to a variety of foliage disorders of many coniferous species. These diseases are usually more severe on young trees or on trees growing outside of their natural range. Disease severity and corresponding...

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9/15/21
Becoming Sentinels Against Invasive Plants Workshop Materials

Prior to Workshop  - 

  1. Each registrant should read the attached Guidelines for Listing, Categorizing and Sharing Information on Plant Taxa Spreading from Cultivation at Public Gardens in North America (Guidelines).
     
  2. ...
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10/21/20
Caution Needed When Predicting Species Threat Status for Conservation Prioritization on a Global Scale

A widely accepted approach to assess extinction risk, and a key source of data underpinning the IPBES report, is the IUCN Red List of Threatened Species (hereafter Red List). However, with only 9%of plants represented by assessments at the latest...

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5/4/20
Genome sequences of horticultural plants: past, present, and future

Horticultural plants play various and critical roles for humans by providing fruits, vegetables, materials for beverages,and herbal medicines and by acting as ornamentals. They have also shaped human art, culture, and environments and thereby have...

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10/11/19
Urban plant diversity in Los Angeles, California: Species and functional type turnover in cultivated landscapes

Urbanization is a large driver of biodiversity globally. Within cities, urban trees, gardens, and residential yards contribute extensively to plant biodiversity, although the consequences and mechanisms of plant cultivation for biodiversity are...

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9/27/19
Outreach Tools to Speak Out for Plants and Science

Contact your elected representatives and let them know how you feel about plants, our web of life, and the ecosystem services we all depend upon:

  • Ask them to cosponsor H.R. 1572 The Botanical Sciences and Native Plant Materials Research,
  • ...
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5/13/19
Shifts in the Abiotic and Biotic Environment of Cultivated Sunflower under Future Climate Change

Sunflower is a unique model species for assessing crop responses and adaptation to climate change. We provide an initial assessment of how climate change may influence the abiotic and biotic environment of cultivated sunflower across the world. We find...

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2/27/19
GloPL, a global data base on pollen limitation of plant reproduction

In a pollen supplementation experiment, fruit or seed production by flowers exposed to natural pollination is compared to that following hand pollination either by pollen supplementation (i.e. manual outcross pollen addition without bagging) or manual...

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11/26/18
Phylogeny and source climate impact seed dormancy and germination of restoration relevant forb species

For many species and seed sources used in restoration activities, specific seed germination
requirements are often unknown. Because seed dormancy and germination traits can be
constrained by phylogenetic history, related species are often...

Resource
11/21/18
A Reforestation Profile of the U.S. Virgin Islands

This article profiles past and present deforestation and reforestation in the U.S. Virgin Islands, along with the geography and ecology of the three islands. The islands of St. Thomas and St. John form one ecological and cultural unit, whereas St....

Resource
4/6/18
Generalized provisional seed zones for native plants

Deploying well-adapted and ecologically appropriate plant materials is a core component of successful restoration projects. The USDA Forest Service has developed generalized provisional seed zones that can be applied to any plant species in the United...

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3/29/18