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- Plant Ecology/Demography (36)
- Goldenrods, Herbivores, and Natural Enemies (26)
- Florida Vegetation, Fire Ecology, and Masting (17)
- Oaks, Cynipid Wasps, and Others (12)
- Pedagogy/How We Do Science (8)
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- Eurosta solidaginis (5)
- Florida (5)
- Cynipidae (4)
- Pennsylvania and Arizona Natural Areas (4)
- Goldenrod (3)
- Pennsylvania (3)
- Quercus (3)
- Serenoa repens (3)
- Acorn (2)
- Architectural defense (2)
- Asteraceae (2)
- Candy-cane stems (2)
- Fire ecology (2)
- Florida scrub (2)
- Gall (2)
- Gall insects (2)
- Herbivory (2)
- Old-growth forest (2)
- Ordination (2)
- Ridge and valley (2)
- Sabal etonia (2)
- Sequential radiation (2)
- Sequential speciation (2)
- Solidago altissima (2)
- Adleria (1)
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Articles 1 - 30 of 60
Full-Text Articles in Entire DC Network
2017_Murphy Et Al._Food Habits Of A Small Fl Bear Population In Endangered Ecosystem.Pdf, Sean M. Murphy, Wade A. Ulrey, Joseph M. Guthrie, David S. Maehr, Warren G. Abrahamson Ii, Sutton C. Maehr, John J. Cox
2017_Murphy Et Al._Food Habits Of A Small Fl Bear Population In Endangered Ecosystem.Pdf, Sean M. Murphy, Wade A. Ulrey, Joseph M. Guthrie, David S. Maehr, Warren G. Abrahamson Ii, Sutton C. Maehr, John J. Cox
Warren G. Abrahamson, II
The Reproduction And Ecology Of Hypericum Edisonianum: An Endangered Florida Endemic, Warren G. Abrahamson Ii, Sam P. Vander Kloet
The Reproduction And Ecology Of Hypericum Edisonianum: An Endangered Florida Endemic, Warren G. Abrahamson Ii, Sam P. Vander Kloet
Warren G. Abrahamson, II
The reproduction and ecology of the narrow endemic and Florida endangered shrub Hypericum edisonianum (Edison’s St. John's Wort) was investigated through field and greenhouse studies. Hypericum edisonianum exhibits a number of traits common to rare and geographically limited plant species including heavy reliance on clonal propagation to maintain local stands; passive seed dispersal resulting in a near-parent seed shadow; limited numbers of genetically unique individuals in its isolated seasonal-pond habitat; and likely self-incompatibility. In the field study, most flowers were produced by a small subset of the monitored ramets. Indeed, three ramets belonging to a single genetic individual accounted for …
Modeling Simultaneous Selection For Resistance And Tolerance In Goldenrod (Solidago Altissima) Across A Range Of Spittlebug Population Densities, Michael J. Wise, Warren G. Abrahamson Ii
Modeling Simultaneous Selection For Resistance And Tolerance In Goldenrod (Solidago Altissima) Across A Range Of Spittlebug Population Densities, Michael J. Wise, Warren G. Abrahamson Ii
Warren G. Abrahamson, II
Plant defenses against herbivory include two main strategies: resistance (to minimize the amount of damage) and tolerance (to minimize the fitness impact of that damage). Recent studies have emphasized the need to consider both strategies simultaneously for a fuller understanding of the evolutionary and ecological dynamics of plant defense against herbivores. We used a combination of a garden study, a greenhouse experiment, and mathematical modeling to investigate resistance to and tolerance of spittlebug damage in the goldenrod Solidago altissima. In contrast to traditional expectations, the genetic correlation between resistance and tolerance was highly positive. Selection gradients indicated that directional selection …
The Effect Of Resource Stress On Goldenrod's Tolerance Of Folivory Depends More On The Identity Of The Stress Than On The Severity Of The Stress, Peter J. March, Michael J. Wise, Warren G. Abrahamson Ii
The Effect Of Resource Stress On Goldenrod's Tolerance Of Folivory Depends More On The Identity Of The Stress Than On The Severity Of The Stress, Peter J. March, Michael J. Wise, Warren G. Abrahamson Ii
Warren G. Abrahamson, II
It is widely accepted that the levels of resources in a plant’s environment can influence the plant’s ability to compensate for (i.e., tolerate) damage by herbivores. However, predicting the direction of the influence has proven difficult. Here, we report on a greenhouse study in which individuals of Solidago altissima were exposed to factorial combinations of light and fertilization levels to investigate how different types of stresses affect plants’ ability to tolerate leaf damage by larvae of the beetle Trirhabda virgata. Shade stress reduced the plants’ tolerance of herbivory, while nutrient stress had no effect on tolerance. These results did not …
The Role Of Olfactory Cues In The Sequential Radiation Of A Gall-Boring Beetle, Mordellistena Convicta, Bradley Rhodes, Catherine Blair, Mizuki Takahashi, Warren Abrahamson
The Role Of Olfactory Cues In The Sequential Radiation Of A Gall-Boring Beetle, Mordellistena Convicta, Bradley Rhodes, Catherine Blair, Mizuki Takahashi, Warren Abrahamson
Warren G. Abrahamson, II
1. Herbivorous insects often have close associations with specific host plants, and their preferences for mating and ovipositing on a specific host-plant species can reproductively isolate populations, facilitating ecological speciation. Volatile emissions from host plants can play a major role in assisting herbivores to locate their natal host plants and thus facilitate assortative mating and host-specific oviposition. 2. The present study investigated the role of host-plant volatiles in host fidelity and oviposition preference of the gall-boring, inquiline beetle, Mordellistena convicta, using Y-tube olfactometers. Previous studies suggest that the gall-boring beetle is undergoing sequential host-associated divergence by utilizing the resources that …
Extensive Clonal Spread And Extreme Longevity In Saw Palmetto, A Foundation Clonal Plant, Mizuki K. Takahashi, Liana M. Horner, Toshiro Kubota, Nathan A. Keller, Warren G. Abrahamson Ii
Extensive Clonal Spread And Extreme Longevity In Saw Palmetto, A Foundation Clonal Plant, Mizuki K. Takahashi, Liana M. Horner, Toshiro Kubota, Nathan A. Keller, Warren G. Abrahamson Ii
Warren G. Abrahamson, II
The lack of effective tools has hampered our ability to assess the size, growth and ages of clonal plants. With Serenoa repens (saw palmetto) as a model, we introduce a novel analytical frame work that integrates DNA fingerprinting and mathematical modelling to simulate growth and estimate ages of clonal plants. We also demonstrate the application of such life-history information of clonal plants to provide insight into management plans. Serenoa is an ecologically important foundation species in many Southeastern United States ecosystems; yet, many land managers consider Serenoa a troublesome invasive plant. Accordingly, management plans have been developed to reduce or …
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Plant-Animal Interactions, W. Abrahamson, T. Taylor
Warren G. Abrahamson, II
No abstract provided.
Genetic Variation For Susceptibility To Storm-Induced Stem Breakage In Solidago Altissima: The Role Of Stem Height And Morphology, M. Wise, W. Abrahamson
Genetic Variation For Susceptibility To Storm-Induced Stem Breakage In Solidago Altissima: The Role Of Stem Height And Morphology, M. Wise, W. Abrahamson
Warren G. Abrahamson, II
While storms can have obvious ecological impacts on plants, plants’ potential to respond evolutionarily to selection for increased resistance to storm damage has received little study. We took advantage of a thunderstorm with strong wind and hail to examine genetic variation for resistance to stem breakage in the herbaceous perennial Solidago altissima. The storm broke the apex of nearly 10% of 1883 marked ramets in a common-garden plot containing 26 genets of S. altissima. Plant genets varied 20-fold in resistance to breakage. Stem height was strongly correlated with resistance to breakage, with taller stems being significantly more susceptible. A stem’s …
Spatiotemporal Variation Of Fruit Digestible-Nutrient Production In Florida's Uplands, J. Layne, W. Abrahamson
Spatiotemporal Variation Of Fruit Digestible-Nutrient Production In Florida's Uplands, J. Layne, W. Abrahamson
Warren G. Abrahamson, II
We examined annual total digestible nutrient (TDN) production by fruits of eight species (Quercus chapmanii, Q. geminata, Q. inopina, Q. laevis, Q. myrtifolia, Carya floridana, Sabal etonia, Serenoa repens) that account for the major proportion of TDN production by fruits and seeds in Florida’s xeric upland associations (southern ridge sandhill, sand pine scrub, scrubby flatwoods). Mean annual fruit TDN of all species combined over a 27-year span in sandhill and scrub and 24 years in scrubby flatwoods was highest (45.4 kg/ha) in sandhill, intermediate in scrubby flatwoods (28.8 kg/ha), and lowest in scrub (14.2 kg/ha). Sandhill fruit TDN production was …
Ducking As The Means Of Resistance In "Candy-Cane" Stems Of Goldenrod: Straightened Stems Lose Their Edge, M. J. Wise, W. G. Abrahamson, J. A. Cole
Ducking As The Means Of Resistance In "Candy-Cane" Stems Of Goldenrod: Straightened Stems Lose Their Edge, M. J. Wise, W. G. Abrahamson, J. A. Cole
Warren G. Abrahamson, II
Herbivores are among the most pervasive selective forces acting on plants, and the number of plant chemicals that presumably evolved for defense against herbivory is immense. In contrast, biologists are only beginning to appreciate the important roles that architectural traits can play in antiherbivore defense. One putative architectural-resistance trait is the nodding stem apex of some goldenrods (Solidago ; Asteraceae). Individuals of S. altissima genets that undergo temporary nodding in the late spring (i.e., “candy-cane ramets) have been shown to be more resistant than individuals of erect-stemmed genets to certain apex-attacking” herbivores. We tested the hypothesis that the greater resistance …
Nutrition As A Facilitator Of Host-Race Formation: The Role Of Food Quality In The Shift Of A Stem-Boring Beetle To A Gall Host, C. P. Blair, R. V. Schlanger, S. E. Diamond, W. G. Abrahamson
Nutrition As A Facilitator Of Host-Race Formation: The Role Of Food Quality In The Shift Of A Stem-Boring Beetle To A Gall Host, C. P. Blair, R. V. Schlanger, S. E. Diamond, W. G. Abrahamson
Warren G. Abrahamson, II
1. The importance of host-race formation to herbivorous insect diversity depends on the likelihood that successful populations can be established on a new plant host. A previously unexplored ecological aid to success on a novel host is better nutritional quality. The role of nutrition was examined in the shift of the stem-boring beetle Mordellistena convicta to fly-induced galls on goldenrod and the establishment there of a genetically distinct gall host race. 2. First, larvae of the host race inhabiting stems of Solidago gigantea were transplanted into stems and galls of greenhouse-grown S. gigantea plants. At the end of larval development, …
Behavioural, Ecological And Genetic Evidence Confirm The Occurrence Of Host-Associated Differentiation In Goldenrod Gall Midges, Warren Abrahamson, N. Dorchin, S.D. Jordan, E.R. Scott, C.E. Clarkin, M.P. Luongo
Behavioural, Ecological And Genetic Evidence Confirm The Occurrence Of Host-Associated Differentiation In Goldenrod Gall Midges, Warren Abrahamson, N. Dorchin, S.D. Jordan, E.R. Scott, C.E. Clarkin, M.P. Luongo
Warren G. Abrahamson, II
No abstract provided.
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Warren G. Abrahamson, II
The palmettos Serenoa repens and Sabal etonia are crucial foundation species in many peninsular Florida vegetative associations. We monitored the survival and growth of individual palmetto seedlings using two cohorts found in different vegetative associations. Seedling cohorts containing both S. repens and S. etonia were individually tagged in 1989 and have been monitored until 2008, a period of 19 years. One cohort (N = 100 seedlings) occurs in a xeric, “inopina-phase” scrubby flatwoods and a second cohort (N =78 seedlings) lives in a well-drained, “wiregrass-phase” flatwoods. The soils at both sites are very nutrient-poor Entisols that show rapid permeability, low …
Associational Resistance, Gall-Fly Preferences, And A Stem Dimorphism In Solidago Altissima, M. J. Wise, C. G. Yi, W. G. Abrahamson
Associational Resistance, Gall-Fly Preferences, And A Stem Dimorphism In Solidago Altissima, M. J. Wise, C. G. Yi, W. G. Abrahamson
Warren G. Abrahamson, II
No abstract provided.
Ducking As A Means Of Resistance To Herbivory In Tall Goldenrod, Solidago Altissima, Warren Abrahamson, M.J. Wise
Ducking As A Means Of Resistance To Herbivory In Tall Goldenrod, Solidago Altissima, Warren Abrahamson, M.J. Wise
Warren G. Abrahamson, II
No abstract provided.
Testing The Nutrition Hypothesis For The Adaptive Nature Of Insect Galls: Does A Non-Adapted Herbivore Perform Better In Galls?, Warren Abrahamson, S.E. Diamond, C.P. Blair
Testing The Nutrition Hypothesis For The Adaptive Nature Of Insect Galls: Does A Non-Adapted Herbivore Perform Better In Galls?, Warren Abrahamson, S.E. Diamond, C.P. Blair
Warren G. Abrahamson, II
No abstract provided.
Sequential Radiation Through Host-Race Formation: Herbivore Diversity Leads To Diversity In Natural Enemies, Warren G. Abrahamson Ii, C.P. Blair
Sequential Radiation Through Host-Race Formation: Herbivore Diversity Leads To Diversity In Natural Enemies, Warren G. Abrahamson Ii, C.P. Blair
Warren G. Abrahamson, II
No abstract provided.
Ecosampler: A Learning Object For Community Sampling, Community Structure, And Succession, Warren G. Abrahamson Ii, M.R. Weaver
Ecosampler: A Learning Object For Community Sampling, Community Structure, And Succession, Warren G. Abrahamson Ii, M.R. Weaver
Warren G. Abrahamson, II
No abstract provided.
Plant And Pollinator Diversity In Northern Arizona, Warren Abrahamson, L.E. Stevens, T.L. Griswold, O. Messenger, T.J. Ayers
Plant And Pollinator Diversity In Northern Arizona, Warren Abrahamson, L.E. Stevens, T.L. Griswold, O. Messenger, T.J. Ayers
Warren G. Abrahamson, II
No abstract provided.
Leaf Traits And Leaf Life Spans Of Two Xeric-Adapted Palmettos, Warren Abrahamson
Leaf Traits And Leaf Life Spans Of Two Xeric-Adapted Palmettos, Warren Abrahamson
Warren G. Abrahamson, II
Plants of nutrient-poor, arid environments often have leaf traits that include small size, sclerophylly, long life span, low nutrient concentration, and low photosynthetic rate. Hence, the success of two large-leaved palmettos in peninsular Florida’s seasonally xeric, nutrient-impoverished uplands seems anomalous, given that their leaves are orders of magnitude larger than the leaves of co-occurring species. An examination of leaf traits and leaf life spans across four vegetative associations differing in available light using a 16-yr data set showed that leaves of Serenoa repens and Sabal etonia had low rates of leaf production coupled with long leaf life spans reaching 3.5 …
Effects Of Resource Availability On Tolerance Of Herbivory: A Review And Assessment Of Three Opposing Models, Warren Abrahamson, M.J. Wise
Effects Of Resource Availability On Tolerance Of Herbivory: A Review And Assessment Of Three Opposing Models, Warren Abrahamson, M.J. Wise
Warren G. Abrahamson, II
No abstract provided.
Review Of The Nearctic Gallwasp Species Of The Genus Bassettia Ashmead, 1887, With Description Of New Species (Hymenoptera: Cynipidae: Cynipini), Warren G. Abrahamson Ii, G. Melika
Review Of The Nearctic Gallwasp Species Of The Genus Bassettia Ashmead, 1887, With Description Of New Species (Hymenoptera: Cynipidae: Cynipini), Warren G. Abrahamson Ii, G. Melika
Warren G. Abrahamson, II
No abstract provided.
Costs And Benefits Of Gregarious Feeding In The Meadow Spittlebug, Philaenus Spumarius, Warren Abrahamson, M.J. Wise, D.L. Kieffer
Costs And Benefits Of Gregarious Feeding In The Meadow Spittlebug, Philaenus Spumarius, Warren Abrahamson, M.J. Wise, D.L. Kieffer
Warren G. Abrahamson, II
No abstract provided.
Post-Fire Canopy Recovery In Two Fire-Adapted Palms, Serenoa Repens And Sabal Etonia (Arecaceae), Warren Abrahamson, C.R. Abrahamson
Post-Fire Canopy Recovery In Two Fire-Adapted Palms, Serenoa Repens And Sabal Etonia (Arecaceae), Warren Abrahamson, C.R. Abrahamson
Warren G. Abrahamson, II
No abstract provided.
Scrub Hickory: A Florida Endemic, Warren Abrahamson, J.N. Layne
Scrub Hickory: A Florida Endemic, Warren Abrahamson, J.N. Layne
Warren G. Abrahamson, II
No abstract provided.
Ecological Divergence Among Five Co-Occurring Species Of Old-Field Goldenrods, Warren Abrahamson, K. Ball Dobley
Ecological Divergence Among Five Co-Occurring Species Of Old-Field Goldenrods, Warren Abrahamson, K. Ball Dobley
Warren G. Abrahamson, II
No abstract provided.
Long-Term Trends In Annual Reproductive Output Of The Scrub Hickory: Factors Influencing Variation In Size Of Nut Crop, Warren Abrahamson, J.N. Lane
Long-Term Trends In Annual Reproductive Output Of The Scrub Hickory: Factors Influencing Variation In Size Of Nut Crop, Warren Abrahamson, J.N. Lane
Warren G. Abrahamson, II
No abstract provided.
Insects Raise Some Galling Questions, Warren G. Abrahamson Ii
Insects Raise Some Galling Questions, Warren G. Abrahamson Ii
Warren G. Abrahamson, II
No abstract provided.
Classification And Successional Changes Of Mixed-Oak Forests At The Mohn Mill Area, Pennsylvania, Warren G. Abrahamson Ii, A.C. Gohn
Classification And Successional Changes Of Mixed-Oak Forests At The Mohn Mill Area, Pennsylvania, Warren G. Abrahamson Ii, A.C. Gohn
Warren G. Abrahamson, II
No abstract provided.
Using Gall Wasps On Oaks To Test Broad Ecological Concepts, P.W. Price, Warren G. Abrahamson Ii, M.D. Hunter, G. Melika
Using Gall Wasps On Oaks To Test Broad Ecological Concepts, P.W. Price, Warren G. Abrahamson Ii, M.D. Hunter, G. Melika
Warren G. Abrahamson, II
Planning conservation of insect herbivores requires knowing what needs to be conserved and developing a set of predictor variables that aid management. We conducted a state-wide survey to examine the species richness of gall wasps ( Hymenoptera: Cynipidae) on six oak species dominant in the threatened scrub-oak vegetation in peninsular Florida. Eighty-eight cynipid species were recorded; 23 were new species to Florida (a 35% increase), including 17 species new to science and 6 species newly recorded in the state. The cynipid species represented 68% of cynipids of Florida, on only 24% of oak species sampled. This fauna represents a hotspot …