منابع مشابه
Plant Macrofossils from Kirchner Marsh, Minnesota—A Paleoecological Study
Seeds and other plant macrofossils were extracted from cores used previously for pollen analysis, and the results are presented in the style of pollen diagrams. The Zone A macroflora is characterized by abundant Picea (spruce) and Larix (tamarack) needles. The remaining species are widely distributed on swampy lake shores, in silty lakes, or in forest-floor communities. The macroflora contains ...
متن کاملAmmophila breviligulata: Implications of using non-local plant sources for native plant restorations in Minnesota
Ecological restoration projects often rely upon the introduction of nonlocal propagules, such as seed or clonal fragments, to replace or supplement threatened populations. In Minnesota, historical dune restoration projects introduced nonlocal propagules of Ammophila breviligulata from Michigan to augment the threatened native population. Despite the good intentions of such efforts, there is mou...
متن کاملPlant-parasitic Nematode Communities and Their Associations with Soil Factors in Organically Farmed Fields in Minnesota.
A survey was conducted to determine the assemblage and abundance of plant-parasitic nematodes and their associations with soil factors in organically farmed fields in Minnesota. A total of 31 soil samples were collected from southeast (SE), 26 samples from southwest (SW), 28 from west-central (WC), and 23 from northwest (NW) Minnesota. The assemblage and abundance of plant-parasitic nematodes v...
متن کاملWoody plant regeneration after blowdown, salvage logging, and prescribed fire in a northern Minnesota forest
Salvage logging after natural disturbance has received increased scrutiny in recent years because of concerns over detrimental effects on tree regeneration and increased fine fuel levels. Most research on tree regeneration after salvage logging comes from fire-prone systems and is short-term in scope. Limited information is available on longer term responses to salvage logging after windstorms ...
متن کاملPlant Morphogenesis: Life on a different plane
Arabidopsis ton mutant cells do not make the bands of microtubules that normally predict cell-division planes; the planes are irregular, yet seedlings develop to maturity. Is cellular morphogenesis important for plant form?
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1900
ISSN: 0003-0147,1537-5323
DOI: 10.1086/277608