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Life Sciences Commons

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Retrospective Theses and Dissertations

Environmental Sciences

Plant ecology

Articles 1 - 7 of 7

Full-Text Articles in Life Sciences

Restoration Of Remnant, Native Warm-Season Grasses On Southern Iowa Pastureland, Thomas Robert Rosburg Jan 1990

Restoration Of Remnant, Native Warm-Season Grasses On Southern Iowa Pastureland, Thomas Robert Rosburg

Retrospective Theses and Dissertations

No abstract provided.


Abundance, Distribution, And Diversity Of Buried Seed Populations In The Delta Marsh, Manitoba, Canada , Roger Lynn Pederson Jan 1983

Abundance, Distribution, And Diversity Of Buried Seed Populations In The Delta Marsh, Manitoba, Canada , Roger Lynn Pederson

Retrospective Theses and Dissertations

Several plant communities in the Delta Marsh were analyzed with respect to the distribution, abundance, diversity, and temporal variation in buried seed populations and annual seed rain. Numbers of germinable seeds were measured by placing substrate and seed trap soil samples under two simulated environmental conditions (drawdown and shallow-flooded) in an outdoor shelter;From the seed bank, four times as many seedlings and twice as many species occurred in substrate samples under the drawdown treatment as compared to samples under the shallow-flooded treatment. Many of the common species in the seed bank (Scirpus validus), (Scripus maritimus), Rumex maritimus, Aster brachyactis ...


The Vegetation Of Ledges State Park, Boone County, Iowa, Cindy Lee Johnson-Groh Jan 1983

The Vegetation Of Ledges State Park, Boone County, Iowa, Cindy Lee Johnson-Groh

Retrospective Theses and Dissertations

No abstract provided.


Forest-Prairie Boundary Energetics And Secondary Succession , Daniel Lee Stoneburner Jan 1970

Forest-Prairie Boundary Energetics And Secondary Succession , Daniel Lee Stoneburner

Retrospective Theses and Dissertations

No abstract provided.


Competitive Ability Of Five Populations Of Amaranthus Retroflexus L. , Terry Charles Heiner Jan 1970

Competitive Ability Of Five Populations Of Amaranthus Retroflexus L. , Terry Charles Heiner

Retrospective Theses and Dissertations

No abstract provided.


Composition And Environmental Interactions Of A Natural Forested Area Of Central Iowa , Clair Leonard Kucera Jan 1950

Composition And Environmental Interactions Of A Natural Forested Area Of Central Iowa , Clair Leonard Kucera

Retrospective Theses and Dissertations

No abstract provided.


Site Factor Variations And Responses In Temporary Forest Types In Northern Idaho , Julius Ansgar Larsen Jan 1936

Site Factor Variations And Responses In Temporary Forest Types In Northern Idaho , Julius Ansgar Larsen

Retrospective Theses and Dissertations

No abstract provided.