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Shifts in the timing of spring phenology are a central feature of global change research. Long-term observations of plant phenology have been used to track vegetation responses to climate variability but are often limited to particular species and locations and may not represent synoptic patterns. Satellite remote sensing is instead used for continental to global monitoring. Although numerous methods exist to extract phenological timing, in particular start-of-spring (SOS), from time series of reflectance data, a comprehensive intercomparison and interpretation of SOS methods has not been conducted. Here, we assess 10 SOS methods for North America between 1982 and 2006. The techniques include consistent inputs from...
Categories: Publication;
Types: Citation;
Tags: bloom,
budburst,
climate change,
flower,
growing seaso
These data identify, in general, the areas where final critical habitat for the Desert yellowhead (Yermo xanthocephalus) occur. The geographic extent includes Fremont County, Wyoming.
Categories: Data;
Types: Downloadable;
Tags: Critical habitat,
Desert yellowhead,
Final Rule,
Flora,
Flower,
These data identify, in general, the areas where final critical habitat for the Desert yellowhead (Yermo xanthocephalus) occur. The geographic extent includes Laramie and Platte Counties, Wyoming.
Categories: Data;
Types: Downloadable;
Tags: Colorado Butterfly Plant,
Critical habitat,
Final Rule,
Flora,
Flower,
These data were collected to fulfill multiple Inter-agency agreements established by US Geological Survey and multiple partners: US Department of Agriculture-Farm Service Agency, USDA Natural Resources Conservation Service, and the Honey Bee Health Coalition. In this study USGS scientists conducted floral resource and insect pollinator assessments across multiple land covers in North Dakota, South Dakota, and Minnesota from 2015 to 2019. Sampling was done along 2x20m transects in June through September by a single observer. All transects were located on private or public grasslands such as Conservation Reserve Program (CRP) lands, Environmental Quality Incentives Program (EQIP) lands, managed pasture, haylands,...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Minnesota,
North Dakota,
Northern Great Plains,
Prairie Pothole Region,
South Dakota,
A newly recovered twig with attached leaves and flowers from the Eocene Green River Formation of Utah provides the basis for recognizing a new, extinct genus of Salicaceae sensu lato (s.l.). Pseudosalix handleyi gen. et sp. nov. has alternate lanceolate leaves with pinnate, semicraspedodromous venation and a serrate margin with glandular teeth. The inflorescence is terminal on the twig and is unisexual, composed of flowers organized in a paniculoid cyme, with lateral paraclades of pedicellate flowers. The attached pistillate flowers have four prominent sepals that are valvate in bud, spreading but basally fused at anthesis; the single pistil of each flower is ovoid with three or four longitudinal sutures, indicating...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: American Journal of Botany,
Green River formation,
Pseudosalix handleyi,
Salicaceae,
Utah,
This data release is for all plant and insect interaction observations collected by U.S. Geological Survey (USGS) researchers at Northern Prairie Wildlife Research Center. These data are publically available and searchable on the USGS Pollinator Library website, along with other non-USGS collected plant and insect interaction records. The aim of the Pollinator Library is to support management and research of plant-pollinator systems by documenting, synthesizing, and disseminating information on flowers that are utilized by pollinators and other insects. We hope that by providing free access to essential information, the Pollinator Library will lead to an improved understanding of the foraging needs of flower-visiting...
Categories: Data;
Tags: Minnesota,
North Dakota,
Northern Great Plains,
Prairie Pothole Region,
South Dakota,
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