34 research outputs found
Selecting and Testing Cryptogam Species for Use in Wetland Delineation in Alaska
To support the determination of hydrophytic vegetation in wetland delineations in Alaska, USA, a series of tests were conducted to develop a group of âtest positiveâ species to be used in a âcryptogam indicator.â In 2004, non-vascular cryptogam species (bryophytes, lichens, and fungi) from Interior and South-Central Alaska in the vicinities of Fairbanks and Anchorage were collected at a series of ten 50 Ă 50 cm plots along two 30 m transects in each of six upland and five wetland sites. Nineteen moss and liverwort species were selected from 86 species surveyed to test for wetland fidelity. In 2005, a plot-based analysis of frequency and cover data yielded a revised list of 17 bryophyte species that were specific to wetland communities dominated by black spruce, Picea mariana (P. Mill.) B.S.P. Fungi and lichens were found to be inadequate wetland indicators in the sampled locations because the lichen species were sparsely distributed and the fungi were too ephemeral. The cryptogam indicator was thus restricted to bryophytes. Also in 2005, bryophytes were analyzed for their presence on microtopographic positions within the landscape, including tops of hummocks and hollows at the bases of hummocks. Upland bryophyte species were found on hummock tops inside the wetland boundary, but were not abundant in the hollows (p < 0.05). The fidelity of the species selected for use in the cryptogam indicator was tested. It was determined that if more than 50% of all bryophyte cover present in hollows is composed of one or more of the 17 wetland bryophytes tested in 2005, then vascular vegetation can be considered to be hydrophytic (p < 0.001).Afin dâĂ©tayer la prĂ©sence de vĂ©gĂ©tation hydrophytique dans les dĂ©limitations de zones humides de lâAlaska, aux Ătats-Unis, une sĂ©rie de tests a Ă©tĂ© effectuĂ©e dans le but dâaboutir Ă un groupe dâespĂšces « de test positives » Ă utiliser avec un « indicateur de sporophyte ». En 2004, des espĂšces de sporophytes non vasculaires (bryophytes, lichens et champignons) de lâintĂ©rieur et du centre-sud de lâAlaska, aux environs de Fairbanks et dâAnchorage, ont Ă©tĂ© recueillies Ă une sĂ©rie de dix parcelles de 50 sur 50 cm le long de deux transects de 30 m dans chacun de six sites montagnards et de cinq sites humides. Dix-neuf espĂšces de mousse et dâhĂ©patiques ont Ă©tĂ© choisies Ă partir de 86 espĂšces prĂ©levĂ©es dans le but dâen dĂ©terminer la fidĂ©litĂ© aux zones humides. En 2005, une analyse de frĂ©quence de parcelles et des donnĂ©es de couverture ont permis dâobtenir la liste rĂ©visĂ©e de 17 espĂšces de bryophytes propres aux zones humides dominĂ©es par lâĂ©pinette noire, Picea mariana (P. Mill.) B.S.P. Nous avons constatĂ© que les champignons et les lichens Ă©taient des indicateurs de zones humides inadĂ©quats aux sites Ă©chantillonnĂ©s parce que les espĂšces de lichen Ă©taient rĂ©parties maigrement et que les champignons Ă©taient trop Ă©phĂ©mĂšres. Par consĂ©quent, lâindicateur de sporophytes a Ă©tĂ© restreint aux bryophytes. Ăgalement en 2005, nous avons analysĂ© les bryophytes afin dâen dĂ©terminer la prĂ©sence Ă des positions microtopographiques du paysage, ce qui comprenait le sommet de hummocks et les creux Ă la base de hummocks. Des espĂšces de bryophytes montagnardes ont Ă©tĂ© dĂ©celĂ©es aux sommets de hummocks Ă lâintĂ©rieur de la limite des zones humides, mais celles-ci nâabondaient pas dans les creux (p < 0.05). La fidĂ©litĂ© des espĂšces choisies afin dâĂȘtre utilisĂ©es dans lâindicateur de sporophytes a Ă©tĂ© testĂ©e. Nous avons dĂ©terminĂ© que si plus de 50 % de toute la couverture de bryophyte prĂ©sente dans les creux est composĂ©e de lâune ou plusieurs des 17 bryophytes de zones humides testĂ©es en 2005, la vĂ©gĂ©tation vasculaire peut alors ĂȘtre considĂ©rĂ©e comme hydrophytique (p < 0,001)
Utilization of directâacting oral anticoagulation in solid organ transplant patients: A national survey of institutional practices
The safety and efficacy of directâacting oral anticoagulants (DOACs) and reversal strategies are not well established in the solid organ transplant population. This was a survey of pharmacists to assess DOAC and urgent reversal practices among adult transplant programs in the United States. A 27âquestion survey was distributed to members of transplant pharmacy organization listservs between 5/28/19 and 6/30/19. A total of 115 responses were received from kidney (43.5%), heart (20.0%), lung (18.3%), liver (13.9%), and pancreas (4.4%) transplant programs. DOAC use prior to transplant was mostly prohibited in thoracic programs (77.3%) but more permissive in kidney transplant programs (64.0%). If permitted, apixaban (57.8%) was most preferred. At transplant surgery, reversal of DOAC was performed âas neededâ (20.9%) or was not routine (18.3%). DOAC use postâtransplant was more permissive (94.3%). A majority of responders follow FDA recommended dosing in the setting of drugâdrug interactions (51.1%). Major factors influencing DOAC prescribing decisions included renal function, drugâdrug interactions, and insurance. High clinical practice variability exists regarding DOAC utilization and urgent reversal strategies in preâ, periâ, and postâtransplant stages. While more research is needed to refine the clinical landscape, many institutions are using DOAC therapy under the perception that they pose a similar risk of bleeding compared to a nonâtransplant population.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/155952/1/ctr13853_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/155952/2/ctr13853.pd
Results of preliminary reconnaissance trip to determine the presence of wetlands in wet forest habitats on the Island of Hawaii as part of the Hawaii Geothermal Project, October 1993
Report Number: DOE/OR/22109--T1In October 1993, the authors sampled soils, vegetation, and hydrology at eight sites representing a range of substrates, elevations, soil types, and plant community types within rainforest habitats on the Island of Hawaii. Their purpose was to determine whether any of these habitats were wetlands according to the 1987 Corps of Engineers Wetlands Delineation Manual. None of the rainforest habitats they sampled was wetland in its entirety. However, communities established on pahoehoe lava flows contained scattered wetlands in depressions and folds in the lava, where water could accumulate. Therefore, large construction projects, such as that associated with proposed geothermal energy development in the area, have the potential to impact a significant number and/or area of wetlands. To estimate those impacts more accurately, they present a supplementary scope of work and cost estimate for additional sampling in the proposed geothermal project area.U.S. Department of EnergyDOE Contract Number AI05-93OR2210
The National Wetland Plant List: 2013 wetland ratings
Volume: 2013-49Start Page: 1End Page: 24
ADDITIONS TO THE VASCULAR FLORA OF TETON COUNTY WYOMING USA
Volume: 40Start Page: 408End Page: 41
Epiphytes and the National Wetland Plant List
Volume: 2011-16Start Page: 1End Page: 3
The National Wetland Plant List: 2014 update of wetland ratings
Volume: 2014-41Start Page: 1End Page: 4