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Full-Text Articles in Botany

An Introduction To Wetland Seed Banks, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program Apr 2000

An Introduction To Wetland Seed Banks, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


Ecological Dispersal Mechanisms, Reproductive Ecology, And The Importance Of Scale In Zostera Marina In Chesapeake Bay, Matthew C. Harwell Jan 2000

Ecological Dispersal Mechanisms, Reproductive Ecology, And The Importance Of Scale In Zostera Marina In Chesapeake Bay, Matthew C. Harwell

Dissertations, Theses, and Masters Projects

Previous knowledge of the seed ecology of the clonal seagrass Zostera marina L. (eelgrass) suggests that sexual reproduction is not very important to the population dynamics of eelgrass; however, researchers have hypothesized long-distance dispersal for nearly a century. From a bay-wide sampling effort, viable eelgrass seeds in the seed bank were found throughout most of the lower and middle Chesapeake Bay, but abundance of seeds was highly variable. Lower seed-bank densities were found in middle Chesapeake Bay, the region with slow recovery of eelgrass populations. From natural and artificially created eelgrass populations, regional environmental conditions were found to have a …


Plant Species Of The Virginia Coastal Plain Flora That Are Disjunct From The Mountains: Their Distribution, Abundance And Substrate Selectivity, Leah E. Mcdonald Jan 2000

Plant Species Of The Virginia Coastal Plain Flora That Are Disjunct From The Mountains: Their Distribution, Abundance And Substrate Selectivity, Leah E. Mcdonald

Dissertations, Theses, and Masters Projects

No abstract provided.


A Systematic Treatment Of Acacia Coulteri (Fabaceae, Mimosoideae) And Similar Species In The New World, Jennifer T. Jawad, David S. Seigler, John E. Ebinger Jan 2000

A Systematic Treatment Of Acacia Coulteri (Fabaceae, Mimosoideae) And Similar Species In The New World, Jennifer T. Jawad, David S. Seigler, John E. Ebinger

VIMS Articles

Detailed descriptions, habitat preferences, geographic ranges, and representative specimens are given for the 13 taxa of the Acacia coulteri group from Mexico, Central America, and the southwestern United States. These species form a distinct group within Acacia series Vulgares, lacking prickles and usually having persistent stipules. A principal components analysis (PCA) of vegetative and floral features shows that the specimens examined form discrete units in plots of the first three principal components. The groups established by PCA mostly coincide with previously described species. The taxa within this group are phenetically similar, sharing many morphological features. These data also suggest …