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Publikováno v:
The American Midland Naturalist. 179:68-77
While arthropod herbivory on invasive plant species is generally low, herbivory by generalist mammals is often high. We tested whether exclusion of white-tailed deer, Odocoileus virginianus, increased the cover and growth of Lonicera maackii, an inva
Publikováno v:
The American Midland Naturalist. 163:186-196
Ecologists have come to appreciate that plant genotype can affect the success of restoration efforts, but the role of plant symbionts has received less attention. Epichloe-type endophytic fungi (EF) grow in the aboveground tissues of most plants and
Autor:
Dexter R. Sowell, Lorne M. Wolfe
Publikováno v:
The American Midland Naturalist. 163:173-185
Flowers are expected to be under strong selection pressure to be attractive to pollinators. Yet, floral traits that serve in pollinator attraction may inadvertently attract animals that consume flowers. We expected animals to utilize floral cues in t
Publikováno v:
The American Midland Naturalist. 162:224-238
After defoliation occurs leaf photosynthetic rate (Pn) can increase, decrease or remain unchanged relative to control uninjured leaves depending on the plant species. With common milkweed Asclepias syriaca (Asclepiadaceae) we conducted 27 experiments
Autor:
Kaori Shiojiri, Richard Karban
Publikováno v:
The American Midland Naturalist. 159:468-477
Recent work has demonstrated that communication between plants in natural settings can increase resistance against herbivores. However, this phenomenon has been found convincingly for only two species, alder (Alnus glutinosa) and sagebrush (Artemisia
Publikováno v:
The American Midland Naturalist. 154:143-151
This study documents the ingestion of leaves and seeds by gopher tortoises (Gopherus polyphemus) in a relatively intact pine savanna habitat. Fifty-three species of seeds were identified. Species richness of seeds ingested was highest during spring a
Autor:
Helen M. Alexander, Emily Grman
Publikováno v:
The American Midland Naturalist. 153:245-256
Low levels of fruit production are thought to threaten the persistence of Asclepias meadii (Mead's milkweed) populations. We evaluated four hypotheses explaining the low fruit production in one population (herbivory, pollen limitation, resource short
Publikováno v:
The American Midland Naturalist. 149:413-417
We conducted a pot experiment examining the effects of simulated leaf herbivory and supplemental soil nutrients on extrafloral nectary (EFN) glands of Sapium sebiferum seedlings derived from native Chinese and invasive Texas seed stock. We predicted
Publikováno v:
The American Midland Naturalist. 149:425-428
We compared the germination rates of running buffalo clover (Trifolium stoloniferum) seeds that had been passed through the digestive tract of a captive white-tailed deer (Odocoileus virginianus) with those that had not. We found no significant diffe
Autor:
Robert H. Jones, Judith H. Stiles
Publikováno v:
The American Midland Naturalist. 146:171-185
Top-down control by predaceous insects has rarely been demonstrated in terrestrial communities, but invasive species may be particularly suited to exert such control. The red imported fire ant, Solenopsis invicta, has strong interactions with spiders