Results 261 to 270 of about 9,679 (304)

Effects of Low Concentrations of Herbicides on Submersed Aquatic Plants

Weed Science, 1981
Laboratory studies were conducted to investigate the possibility that herbicide runoff from treated fields might be adversely affecting submersed aquatic plants in the Chesapeake Bay. In laboratory studies, I1 and I50 values (the concentrations inhibiting growth 1 and 50%, respectively) were calculated for three herbicides and several aquatic plants ...
D. Raymond Forney, Donald E. Davis
openaire   +1 more source

Atrazine toxicity to submersed vascular plants in simulated estuarine microcosms

Aquatic Botany, 1982
Abstract Photosynthesis in Potamogeton pectinatus L. and Zostera marina L. was inhibited by 650 μg 1 −1 of dissolved atrazine, but was stimulated by 75 μg 1 −1 . Photosynthesis in Zannichellia palustris L. was inhibited at both of these concentrations while in Vallisneria americana Michx inhibition was significant at the higher concentration
David L. Correll, Tung L. Wu
openaire   +1 more source

Gauging submersed plant response to CO2 enrichment: Pot size matters

Aquatic Botany, 2016
Abstract The availability of a photosynthetic carbon source may limit submersed plant growth, and experimental assessment of this limitation may depend on the volume available to belowground plant parts. To test the effect of pot size on submersed plant growth response to CO 2 enrichment, we grew the freshwater macrophyte Vallisneria americana in ...
John E. Titus, Stephanie J. Wendlberger
openaire   +1 more source

Estimating the abundance of subterranean propagules of submersed aquatic plants

Freshwater Biology, 1994
SUMMARY1. Data on sample means (x|) and variances (s2) of propagule abundance for five typos of aquatic plants growing in a variety of habitats were collected. The data set consisted of 379 values for x| and s2, based on 4942 individual sample units (sediment samples), drawn from the literature or from data collected as part of this study.2. Regression
DAVID F. SPENCER, GREGORY G. KSANDER, LINDA C. WHITEHAND   +2 more
openaire   +1 more source

[Submerse bacterial plant tumor on roots].

Planta, 2014
Spontaneous infections seem to indicate that not only the crown of herbeous plants is disposed to generate tumors. Under substrate conditions such as those normally found at the crown, infections caused by Agrobacterium tumefaciens will yield tumors in the entire area of the roots.Roots of Helianthus annuus and Solanum lycopersicum grown in nutritive ...
K, Höhn, E, Hartmann
openaire   +1 more source

Spatial Patterns in Water Quality Associated with Submersed Plant Beds

Estuaries and Coasts, 2011
This study describes the influence of submersed plant beds on spatial distributions of key water quality variables. An on-board flow-through water sampling system was used to investigate patterns in turbidity, chlorophyll-a, temperature, dissolved oxygen, and pH across a robust stand of the submersed plant Stuckenia pectinata.
Renee K. Gruber, Deborah C. Hinkle, W. Michael Kemp   +2 more
openaire   +1 more source

Correlation of consumer grade hydroacoustic signature to submersed plant biomass

Aquatic Botany, 2019
Abstract Invasive macrophytes, such as non-native Hydrilla verticillata, negatively affect lentic systems of the Southeastern United States by impeding recreational activities and power generation as well as disrupting intrinsic ecological function.
Andrew W. Howell, Robert J. Richardson
openaire   +1 more source

Feedback effects in a coastal canopy‐forming submersed plant bed

Limnology and Oceanography, 2010
Although physical and biogeochemical properties of an environment determine distribution and health of biota, some organisms modify habitat conditions through complex interactions with their surroundings. We quantified effects of the canopy‐forming submersed plant species Stuckenia pectinata on local hydrodynamics and explored resulting positive and ...
Renee K. Gruber, W. Michael Kemp
openaire   +1 more source

CO₂‐concentrating mechanisms in Egeria densa, a submersed aquatic plant

Physiologia Plantarum, 2002
Egeria densa is an aquatic higher plant which has developed different mechanisms to deal with photosynthesis under conditions of low CO2 availability. On the one hand it shows leaf pH‐polarity, which has been proposed to be used for bicarbonate utilization.
María V, Lara, Paula, Casati, Carlos S, Andreo   +2 more
openaire   +2 more sources

Absorption and Translocation of Fluridone and Glyphosate in Submersed Vascular Plants

Weed Science, 1981
The uptake and translocation of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone} were examined in sago pondweed (Potamogeton pectinatusL.) and Richardson pondweed [Potamogeton richardsonii(Ar. Benn.) Rydb.]. Root and shoot tissues of both species were isolated from each other with wax barriers and treated individually with 1.
L. Y. Marquis, R. D. Comes, C. P. Yang
openaire   +1 more source