Astragalus oniciformis Barneby is a narrow endemic xerophyte of the upper Snake River Plain of central Idaho, USA, where it inhabits stabilized, aeolian sand deposits and previously burned, sandy sites over Quaternary basalt flows. The objective of this study was to determine the levels and distribution of genetic differentiation within and among populations of A. oniciformis. Fifteen individuals from each of eight populations, chosen from throughout the range of the species, were selected based on accessibility, density of individuals, and large population size. Inter-simple sequence repeats were chosen as the marker to assess genetic differentiation. The two primers selected yielded 40 polymorphic loci in A. oniciformis. In an analysis of molecular variance, 88.69% of the variation was significantly attributed to variation within populations. High gene flow (N(m) = 3.91-3.93; SD = 0.01) and a low percentage deviation from Hardy-Weinberg equilibrium due to population subdivision (G(ST) = 0.113-0.1134; SD = 0.0002) were found among sampled populations. These results suggest that current threats to this species, including changing fire patterns and habitat loss from grazing disturbance, have not yet affected the genetic diversity of this species. Preservation of large populations and smaller, intervening, dispersed patches will help preserve the genetic integrity and the genetic diversity found in A. oniciformis.

Astragalus oniciformis Barneby (Picabo milkvetch) is a narrowly-distributed endemic to the northcentral portion of the eastern Snake River Plain. Habitat for nearly the entire known distribution of this species is managed by the BLM, mostly the Shoshone District, but also the Idaho Falls District. Due to its rarity, it is a federal category 3c candidate and a BLM sensitive species. Intensive searches, beginning in 1981, have resolved the distribution, abundance, and conservation status of the species. Thirty-six occurrences, consisting of numerous subpopulations, occur within a main range of about 42 x 13 miles, with several disjunct populations lying outside the core of its distribution. Shortand long-term threats have been identified. Any conservation strategy developed to assure the longterm persistence of Picabo milkvetch as a viable evolutionary unit must take into account the decline of the sagebrush-steppe ecosystem on the Snake River Plain.

Populus tremuloides (Quaking Aspen) Abies lasiocarpa (Subalpine Fir) Picea engelmannii (Engelmann Spruce) Pinus contorta var.14tafolia (Lodgepole Pine) This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. AbstractThis report lists 441 vascular plant taxa in 228 genera and 63 families encountered on the 9,300-ha Fraser Experimental Forest in central Colorado. Synonyms appearing in previous publications and other works pertaining to the Fraser Experimental Forest, as well as appropriate Colorado floras and less-technical field guides, are included. Plant communities and habitats are discussed, and a list of 54 lichens is also presented. A glossary of related terms is included.Cover Illustration: The four most common tree species occurring on Fraser Experimental Forest.

Station, contributed to the discussions on plant associations and collected a substantial number of previously undocumented taxa. T^preciation is extended to RL. Dix for his helpful suggestions and to the many others who provided useful information since the inception of this report seven years ago.

No abstract

Nowadays, in the aspect of solving the problem of loss of biodiversity and ensuring its protection, the coverage of inventory studies of species representing rare phytodiversity and regions that may experience or are experiencing certain negative natural or anthropogenic influences is of significant theoretical and practical importance. Among them is Ukraine, whose territory has become an example of large-scale transformation of natural complexes under the influence of war, including in the zone of forest vegetation dominance. The paper presents a comparative analysis of the floristic composition of autochthonous species of tree-morphic and lignified plants, which are included in the official "red lists" of all levels (international, state-wide and regional (regional)) and which grow on the territory of Ukraine within the mixed zone (Ukrainian Polissia) and broad-leaved forests zone of Ukraine in territories with nature protection status. At the same time, based on generally accepted methods, the taxonomic, phytomorphological by H. Raunkier, biomorphological, geographical, ecological structure of the flora of the specified group of plants, in relation to which the term "autochthonous dendrosozophytes" was used, was analyzed. It has been established that the autochthonous protected dendrosozophytes of the deciduous forest area of Ukraine, in comparison with the Ukrainian Polissia, are represented not only by more species (87 vs. 58), but also in the system of structural floristic analysis, usually by a higher number of gradations. For almost all floristic structures the species composition of both regions showed a rather high degree of similarity in the aspect of distribution by the corresponding gradations of the maximum (often close to it) proportion of plants. The dendroflora of these two regions turned out to be the most similar in terms of the representation of plants of different biomorphs and life forms according to Raunkier. The similarity of the taxonomic structure was manifested in the fact that plants of the Rosaceae, Fabaceae, Ericaceae, Salicaceae families play a significant role in the composition of the flora of both regions. For the dendrosozoflora, the fact that the largest specific weight of it is made up of plants that are subject to protection at the regional level is also evident. There are clearly expressed differences between the compositions of dendrosozophytes of these regions in the phytogeographic structure, in relation to different geoelements. In the Ukrainian Polissia plants of European and in the area of deciduous forests of Ukraine plants of boreal geoelements there prevail. Some differences are observed in the ecological structure, namely in the extent to which they belong to the xerophytic and hygrophytic hygrogroups. There is also a noticeable difference in the distribution of the proportion of species of transitional hygrogroups. In the species composition of the deciduous forests of Ukraine there is a slightly higher proportion of plants that tend to dry and insufficient moist areas. The results of a comparison of the leading features of the autochthonous protected dendrosozoflora of the Ukrainian Polissia and broad-leaved forests testify to the existence of objectively indicate that there are specific features in each of these regional plant groups. Part of them is a natural consequence of the features of eco-conditions, geographical location of the regions, the evolution of the regional flora formation. Accordingly, all nature protection and restoration measures in the territory of the forest zone should be such as to preserve both its own rare phytodiversity and not to disturb its established structural features characteristic of the regions.

This study aims at describing technology use among caregivers for middle-aged or older adults with and without cognitive impairment (CI) and examining whether the associations between technology use, caregiver strain, and social support differ by care-recipient CI status. Online data from caregivers (n=561) for adults at aged 50 years and older were analyzed from a national caregiver and technology survey. Multiple binary items were used to indicate caregivers’ use of various devices (smartphone, computer, e-reader, and wearable activity tracker) and applications (communication, online banking, navigation, online entertainment, medication alert/tracker, and physical activity tracker). Predictors were care-recipient CI status (having been diagnosed with cognitive problems versus no cognitive problems), caregiver strain, and social support. Multivariable logistic regression models were fitted for each technology and for testing effect modification by care- recipient CI status. All models were adjusted for total caregiving hours and caregiver age, sex, race/ethnicity, financial status, and residence. Almost half (47%) reported their care-recipient was diagnosed with CI. Caregivers for those with CI were more likely to use e-readers (adjusted odds ratio (AOR) = 1.55, p=.040), wearable activity trackers (AOR=1.77, p=.013), and medication alerts/trackers (AOR=2.59, p<.001). Generally, greater caregiving strain and social support were positively associated with use of multiple technologies (p<.05). No effect modification of caregiving strain and social support by CI status was observed (p>.05). Technology use differences among caregivers of persons with CI may be driven by care recipients’ unique situations and demands. Future research should identify technology use benefits on caregiver health-related quality of life.

Using the Conservation of Resources Theory, this study examined how caregiver strain was influenced by care recipients’ use of falls alert wearables. Online survey data from 486 unpaid caregivers for adults aged 50 and older were analyzed. Structural equation modeling was used to test the following hypotheses: (1) caregivers with fewer financial resources would engage in fewer resource conservation strategies (e.g., care recipients’ use of falls alert wearables); (2) resource conservation strategy engagement would be associated less resource loss; and (3) the effect of resource conservation strategies on caregiver strain would be less salient than the effect of resources used on caregiving (e.g., time and social support). The hypothesized model had a good model fit (CFI=.910), with SRMR (.060) and RMSEA (.062) being close to .05. All hypothesized paths were statistically-significant, except for the direct effect of using falls alert wearables on social support (p=.076) and caregiver strain (p=.135). As hypothesized, higher income was associated with greater likelihood of using falls alert wearables (b=.10, p>.022). Technology use was associated with less time spent on caregiving (b=-.16, p<.001) and had statistically-significant indirect effects on caregiver strain (b=-.03, p=.008). The total effect of using falls alert wearables (b=.04, p=.394) on caregiver strain was less powerful than the effect of time (b=.20, p<.001) or social support (b=-.28, p<.001). Study findings suggest the benefits of using falls alert wearables to alleviate time-related burdens and downstream caregiver strain among unpaid caregivers. Future efforts should investigate the relative advantage of wearables for other caregiving purposes.