scholarly journals Najas Flexilis(Hydrocharitaceae) in Alaska: A Reassessment

Rhodora ◽  
10.3119/15-03 ◽  
2015 ◽  
Vol 117 (971) ◽  
pp. 354-370 ◽  
Author(s):  
Donald H. Les ◽  
Angela M. Les ◽  
Ursula M. King ◽  
E. L. Peredo
Keyword(s):  
Najas Flexilis

scholarly journals How effective are plant macrofossils as a proxy for macrophyte presence? The case of Najas flexilis in Scotland

2017 ◽  
Vol 60 (2) ◽  
pp. 153-165 ◽  
Author(s):  
Isabel J. Bishop ◽  
Helen Bennion ◽  
Ian R. Patmore ◽  
Carl D. Sayer
Keyword(s):  
Plant Macrofossils ◽  
Najas Flexilis

Shift in wetland plant composition and biomass following low-level episodes in the St. Lawrence River: looking into the future

2004 ◽  
Vol 61 (4) ◽  
pp. 603-617 ◽  
Author(s):  
Christiane Hudon
Keyword(s):  
Plant Biomass ◽  
Lythrum Salicaria ◽  
Water Levels ◽  
Water Level Fluctuations ◽  
Terrestrial Plants ◽  
Hydrologic Variability ◽  
Najas Flexilis ◽  
Average Water ◽  
Similar Episode ◽  
St Lawrence River

The effects of a 1-m drop in average water levels in 1999 on species composition and biomass were documented for a St. Lawrence River wetland and compared with a similar episode in 1931. These observations highlight the manifold effects of past and future water level fluctuations on St. Lawrence River wetlands and faunal habitats, resulting from natural hydrologic variability, climate change, and (or) human intervention. In 1931 and 1999, waters were 2–3 °C warmer than the previous 10-year average. Low water levels markedly altered wetland vegetation: various Graminea (including Phalaris arundinacea and Phragmites australis) and facultative annual species invaded previously marshy areas. Submerged species previously found in shallow waters were replaced on dry ground by annual terrestrial plants; Alisma gramineum colonized emergent waterlogged mudflats. The low water levels of 1999 induced a spatially discontinuous plant biomass that was richer in terrestrial material than in previous years (1993–1994). In comparison with the 1930s, recent surveys indicate a decline of assemblages dominated by Equisetum spp. and Najas flexilis and a rise of those dominated by Lythrum salicaria, Potamogeton spp., and filamentous algae. These shifts reveal the additional effects of nutrient enrichment, alien species, and shoreline alteration accompanying a change from a mostly agricultural to a mostly urbanized and industrialized landscape.

scholarly journals Photorespiration and CO2 compensation point in Najas flexilis 1

1978 ◽  
Vol 23 (4) ◽  
pp. 719-724 ◽  
Author(s):  
R. Anton Hough ◽  
Robert G. Wetzel
Keyword(s):  
Compensation Point ◽  
Co2 Compensation Point ◽  
Najas Flexilis

scholarly journals Filling the “data gap”: Using paleoecology to investigate the decline of Najas flexilis (a rare aquatic plant)

2019 ◽  
Vol 6 (2) ◽  
Author(s):  
Isabel J. Bishop ◽  
Helen Bennion ◽  
Carl D. Sayer ◽  
Ian R. Patmore ◽  
Handong Yang
Keyword(s):  
Aquatic Plant ◽  
Najas Flexilis ◽  
Data Gap

scholarly journals Erratum to: How effective are plant macrofossils as a proxy for macrophyte presence? The case of Najas flexilis in Scotland

2017 ◽  
Vol 60 (2) ◽  
pp. 167-168
Author(s):  
Isabel J. Bishop ◽  
Helen Bennion ◽  
Ian R. Patmore ◽  
Carl D. Sayer
Keyword(s):  
Plant Macrofossils ◽  
Najas Flexilis

scholarly journals New Records of Vascular Plants in the Yukon Territory VII

2005 ◽  
Vol 119 (3) ◽  
pp. 417 ◽  
Author(s):  
William J. Cody ◽  
Bruce A. Bennett ◽  
Phil Caswell
Keyword(s):  
Vascular Plants ◽  
National Park ◽  
New Records ◽  
Yukon Territory ◽  
Field Reconnaissance ◽  
Najas Flexilis ◽  
Polygonum Persicaria ◽  
Leymus Mollis

Based on field reconnaissance mainly in 2003 in Kluane National Park but also many other areas throughout the Yukon, information is provided on geographically significant plant occurrences. Thirteen native taxa, Agrostis humilis, Blysmopsis rufa, Carex bebbii, C. lenticularis var. dolia, C. nigricans, C. sartwellii, C. siccata, Diphasiastrum sitchense, Najas flexilis, Oxytropis arctica var. arctica, Oxytropis arctica var. murrayi, Saxifraga nelsoniana ssp. carlottae and Swertia perennis and two introduced taxa, Bromus japonicus and Leymus mollis ssp. mollis s.l. are reported new to the flora of the Yukon Territory. Significant range extensions for 109 native and eight introduced taxa are included and three species, Clematis occidentalis, Polygonum persicaria, and Verbena hastata are deleted from the flora.

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