Results 151 to 160 of about 7,064 (184)
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Phycologia, 1986
Abstract The taxonomic relationships of Ulva californica, U. angusta and U. scagelii were evaluated through morphological studies of field and herbarium specimens, and through culture studies. These species show ecological, morphological and cytological similarities but differ in size, habit and distributions.
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Abstract The taxonomic relationships of Ulva californica, U. angusta and U. scagelii were evaluated through morphological studies of field and herbarium specimens, and through culture studies. These species show ecological, morphological and cytological similarities but differ in size, habit and distributions.
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Nature, 1962
IN the course of experiments on Ulva mutabilis1 some gametophytes are occasionally found forming swarmer which copulate neither with +-gametes nor with −-gametes. These swarmers are diploid, as revealed by cytological and genetical examination. They are biflagellate and of normal size, and otherwise they fully resemble normal gametes.
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IN the course of experiments on Ulva mutabilis1 some gametophytes are occasionally found forming swarmer which copulate neither with +-gametes nor with −-gametes. These swarmers are diploid, as revealed by cytological and genetical examination. They are biflagellate and of normal size, and otherwise they fully resemble normal gametes.
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Acta Oceanologica Sinica, 2012
Allelopathic effects of several concentrations of fresh tissue, dry powder and dry tissue of three bloom-forming green macroalgae Ulva pertusa, Ulva linza and Enteromopha intestinalis on the red tide microalga Heterosigma akashiwo were evaluated in microcosms systems. The effects of macroalgae culture medium filtrate were investigated on H.
Renjun Wang +4 more
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Allelopathic effects of several concentrations of fresh tissue, dry powder and dry tissue of three bloom-forming green macroalgae Ulva pertusa, Ulva linza and Enteromopha intestinalis on the red tide microalga Heterosigma akashiwo were evaluated in microcosms systems. The effects of macroalgae culture medium filtrate were investigated on H.
Renjun Wang +4 more
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The effects of the nitrofuran furaltadone on Ulva lactuca
Chemosphere, 2011The use of pharmaceuticals in the food production industry as prophylatic and therapeutic agents is necessary to promote animal health, but may entail significant consequences to natural ecosystems, especially in the cases of overdosing and use of banned pharmaceuticals. The vast effects that antibiotics released into the environment have on non-target
Leston, Sara +7 more
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The Ionic Relations of Ulva lactuca
Journal of Plant Physiology, 1988Summary The ionic relations of the marine green alga, Ulva lactuca (L.) Grev. have been studied in seawater ([K+]o, 10.1 mol m-3; [Na+]o, 468 mol m-3; [CI-]o, 547 mol m-3). The membrane potential (Δψi,o) was -39 ∓ 1.1mV in the light and -25∓1.9mV in the dark (∓95% confidence limits), based on micro-electrode measurements.
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