Lee A Dyer

Lee A Dyer
University of Nevada, Reno | UNR · Department of Biology

PhD

About

207
Publications
58,696
Reads
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7,476
Citations
Citations since 2017
74 Research Items
3827 Citations
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20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
Education
September 2000 - December 2004
University of Colorado Boulder
Field of study
  • Ecology

Publications

Publications (207)
Article
Full-text available
In the last three decades, benthic foraminiferal ecology has been intensively investigated to improve the potential application of these marine organisms as proxies of the effects of climate change and other global change phenomena. It is still challenging to define the most important factors affecting foraminiferal communities and derived faunisti...
Article
Full-text available
Research on plant-pollinator interactions requires a diversity of perspectives and approaches, and documenting changing pollinator-plant interactions due to declining insect diversity and climate change is especially challenging. Natural history collections are increasingly important for such research and can provide ecological information across b...
Article
Species richness in tropical forests is correlated with other dimensions of diversity, including the diversity of plant‐herbivore interactions and the phytochemical diversity that influences those interactions. Understanding the complexity of plant chemistry and the importance of phytochemical diversity for plant‐insect interactions and overall for...
Article
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Aximopsis gabrielae Zhang, Gates and Campos sp. nov. is described from southern Mexico in the Yucatan Peninsula, Mexico. This species is a koinobiont gregarious larval-pupal endoparasitoid of the caterpillar of Quadrus cerialis (Stoll) (Lepidoptera: Hesperiidae) feeding on the shrub Piper amalago L. (Piperaceae) in the semievergreen forest. This is...
Article
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Insect herbivores are relatively specialized. Why this is so is not clear. We examine assumptions about associations between local abundance and dietary specialization using an 18-year data set of caterpillar–plant interactions in Ecuador. Our data consist of caterpillar–plant associations and include standardized plot-based samples and general col...
Article
Full-text available
Interactions between plants and insects dominate terrestrial biomes and are being altered in response to global human-environmental change. Documenting such changes in complex interactions is challenging, however, because traditional methods for describing plant-insect interactions at community scales are often based on relatively short sampling pe...
Article
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Introduction: In animals, body size is correlated with many aspects of natural history, such as life span, abundance, dispersal capacity and diet breadth. However, contrasting trends have been reported for the relationship between body size and these ecological traits. Methods: Fruit-feeding butterflies were used to investigate whether body size is...
Preprint
Full-text available
Introduction: Body size is correlated with many aspects of an animal species' natural history , such as life span, abundance, dispersal capacity and diet breadth. However, contrasting trends have been reported for the relationship between body size and these ecological traits. Methods: Butterfly species from fruit-feeding guilds were used to invest...
Article
The main environmental variables controlling benthic foraminiferal distributions were identified and used to assess their influence on ecological indices developed as predictors of Ecological Quality Status (EcoQS) in marine ecosystems. Gradient forest and random forest models were applied to assess the predictive value of a selection of abiotic...
Article
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Creating robust datasets of plant–insect interactions is important for understanding ecosystem dynamics, and data on species interactions can be used to evaluate conservation interventions. In the present work, we collected plant–herbivore–parasitoid data on an understudied but critical ecosystem—gallery forests in the Brazilian cerrado. We collect...
Article
Full-text available
Foundational hypotheses addressing plant–insect codiversification and plant defense theory typically assume a macroevolutionary pattern whereby closely related plants have similar chemical profiles. However, numerous studies have documented variation in the degree of phytochemical trait lability, raising the possibility that phytochemical evolution...
Article
Full-text available
An increasing number of ecological studies have used chemical diversity as a functionally relevant, scalable measure of phytochemical mixtures, demanding more rigorous attention to how chemical diversity is estimated. Most studies have focused on the composition of phytochemical mixtures and have largely ignored structural concerns, which may have...
Chapter
In the Anthropocene, species loss is very well documented, but associated losses of genetic, functional, and multidimensional diversity are not so clear. Interaction diversity and phytochemistry are two axes of multidimensional and functional diversity that have been neglected in terms of understanding losses of diversity, but it is likely that maj...
Article
Full-text available
en Natural history studies documenting spatial and temporal variation of species assemblages and their interactions are critical for understanding biodiversity and community ecology. We characterized caterpillar–parasitoid assemblages on shrubs in the genus Piper across remnants of semi‐evergreen forest in the Yucatán Península during the rainy and...
Article
Moths are the most taxonomically and ecologically diverse insect taxon for which there exist considerable time-series abundance data. There is an alarming record of decreases in moth abundance and diversity from across Europe, with rates varying markedly among and within regions. Recent reports from Costa Rica reveal steep cross-lineage declines of...
Preprint
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Aims Insects and the plants they interact with dominate terrestrial biomes and constitute over half of the earth’s macro-organismal diversity. Their abundance in museum collections can provide a wealth of natural history data if they are collected as part of careful ecological studies or conservation programs. Here, we summarize pollen-insect quant...
Preprint
Full-text available
Over evolutionary timescales, shifts in plant secondary chemistry may be associated with patterns of diversification in associated arthropods. Although foundational hypotheses of plant-insect codiversification and plant defense theory posit closely related plants should have similar chemical profiles, numerous studies have documented variation in t...
Preprint
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Ecological specialization is one of the most interesting and perplexing attributes of biological systems. While certain macroecological patterns, such as an increase in specialization at lower latitudes, have long been subjects of investigation, there is much yet to be learned about inter-specific variation in specialization within diverse communit...
Article
Deciphering the ecological roles of plant secondary metabolites requires integrative studies that assess both the allocation patterns of compounds and their bioactivity in ecological interactions. Secondary metabolites have been primarily studied in leaves, but many are unique to fruits and can have numerous potential roles in interactions with bot...
Article
Parapanteles Ashmead (Braconidae: Microgastrinae) is a medium-sized genus of microgastrine wasps that was erected over a century ago and lacks a unique synapomorphic character, and its monophyly has not been tested by any means. Parapanteles usually are parasitoids of large, unconcealed caterpillars (macrolepidoptera) and have been reared from an u...
Article
The role of aquatic arthropod diversity and community interactions of larval mosquitoes are important for understanding mosquito population dynamics. We tested the effects of aquatic macrophyte diversity and habitat structural complexity in shaping the predator and competitor invertebrate communities associated with mosquito larvae. Experimental me...
Article
Full-text available
Reports of biodiversity loss have increasingly focused on declines in abundance and diversity of insects, but it is still unclear if substantive insect diversity losses are occurring in intact low-latitude forests. We collected 22 years of plant-caterpillar-parasitoid data in a protected tropical forest and found reductions in the diversity and den...
Article
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The descriptive taxonomic study reported here is focused on Glyptapanteles , a species-rich genus of hymenopteran parasitoid wasps. The species were found within the framework of two independent long-term Neotropical caterpillar rearing projects: northwestern Costa Rica (Área de Conservación Guanacaste, ACG) and eastern Andes, Ecuador (centered on...
Article
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A biological inventory focused on plant-caterpillar-parasitoid associations at Yanayacu Biological Station, Ecuador, yielded 81 adult specimens of Tortricidae (Lepidoptera: Tortricoidea) representing 42 species in 13 genera. Based on this material, new host records are presented for species in the following genera: Lypo- thora Razowski, 1981; Inape...
Conference Paper
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The extinction patterns, as well as paleobathymetric and paleoenvironmental changes, of benthic foraminifera were investigated across the Cretaceous/Paleogene (K/Pg) boundary at the Galanderud section (Northern Alborz, Iran), which contains one of the most continuous and expanded K/Pg transitions in the eastern Tethys. Changes in the benthic forami...
Article
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Frequently disturbed ecosystems are characterized by resilience to ecological disturbances. Longleaf pine ecosystems are not only resilient to frequent fire disturbance, but this feature sustains biodiversity. We examined how fire frequency maintains beta diversity of multi-trophic interactions in longleaf pine ecosystems, as this community propert...
Article
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Phytochemical traits are a key component of plant defense theory. Chemical ecology has been biased towards studying effects of individual metabolites even though effective plant defenses are comprised of diverse mixtures of metabolites. We tested the phytochemical landscape hypothesis, positing that trophic interactions are contingent upon their sp...
Article
Increases in data availability and geographic ranges of studies have allowed for more thorough tests of latitudinal gradients in trophic interactions, with numerous recent studies testing hypotheses that strength of interactions, herbivory, plant chemical defense, and dietary specialization all increase with decreasing latitude. We review the issue...
Article
Full-text available
1. As trees age, they undergo significant physiological and morphological changes. Nevertheless, tree ontogeny and its impacts on herbivores are often overlooked as determinants of plant–herbivore population dynamics and the strength of plant–herbivore interactions. 2. Juniperus (Cupressaceae) is a dominant, long‐lived conifer that serves as the so...
Article
Full-text available
β diversity of herbivorous insects in the tropics is usually very high, and there is often strong dissimilarity in herbivore species composition across different spatial scales and different abiotic gradients. Similarly, turnover is high for trophic interactions between herbivorous insects and their host plants. Two factors have been proposed to ex...
Data
Bray-Curtis indices calculated for plant-caterpillar interaction networks. (DOCX)
Data
Species codes and associated plant and caterpillar species or morphotypes. (DOCX)
Article
Full-text available
Diverse mixtures of plant natural products play an important role in plant-herbivore-parasitoid interactions. In the pursuit of understanding these chemically-mediated interactions, we are often faced with the challenge of determining ecologically and biologically relevant compounds present in complex phytochemical mixtures. Using a network-based a...
Article
Full-text available
Phytochemical variation among plant species is one of the most fascinating and perplexing features of the natural world and has implications for both human health and the functioning of ecosystems. A key area of research on phytochemical variation has focused on insects that feed on plants and the enormous diversity of plant-derived compounds that...
Article
Full-text available
There is tremendous diversity of interactions between plants and other species. These relationships range from antagonism to mutualism. Interactions of plants with members of their ecological community can lead to a profound metabolic reconfiguration of the plants' physiology. This reconfiguration can favour beneficial organisms and deter antagonis...
Article
Full-text available
Terrestrial tri–trophic interactions account for a large part of biodiversity, with approximately 75% represented in plant–insect–parasitoid interactions. Herbivore diet breadth is an important factor mediating these tri–trophic interactions, as specialization can influence how herbivore fitness is affected by plant traits. We investigated how phyt...
Article
Full-text available
Most of earth’s biodiversity is comprised of interactions among species, yet it is unclear what causes variation in interaction diversity across space and time. We define interaction diversity as the richness and relative abundance of interactions linking species together at scales from localized, measurable webs to entire ecosystems. Large-scale p...
Data
Direct relationship between species and interaction diversity as estimated by correlation coefficients, and the beta coefficients from linear regressions between species and interaction diversity. (PDF)
Data
Beta coefficient and R2 for linear regression of residuals from linear regression between species and interaction diversity and the variable of interest (diet breadth, species richness, abundance). (PDF)
Data
R-Code to generate tri-trophic networks used in this analysis. (R)
Data
Analysis and descriptive statistics for each complete tri-trophic network. No accumulation data is included, only the final, observed network. (ZIP)
Data
Rarefaction curves for interactions and species from 1000 simulated communities. Rarefaction curves were generated using a modified version of the ‘rarecurve’ function in the R-package, vegan. This modification permitted sampling of species and interactions within each community with replacement 500 times. Rarefaction curves were generated for all...
Data
Raw accumulation data from 1000 model simulations used in this manuscript. (ZIP)
Article
Understanding the interaction between host plant chemistry, the immune response, and insect pathogens can shed light on host plant use by insect herbivores. In this study, we focused on how interactions between the insect immune response and plant secondary metabolites affect the response to a viral pathogen. Based upon prior research, we asked whe...
Article
Full-text available
The origins of evolutionary radiations are often traced to the colonization of novel adaptive zones, including unoccupied habitats or unutilized resources. For herbivorous insects, the predominant mechanism of diversification is typically assumed to be a shift onto a novel lineage of host plants. However, other drivers of diversification are import...
Article
Full-text available
2017. Overstory-derived surface fuels mediate plant species diversity in frequently burned longleaf pine forests. Ecosphere 8(10): Abstract. Frequently burned low-latitude coniferous forests maintain a high-diversity understory. Longleaf pine (Pinus palustris Mill.) forests and woodlands have exceptionally high diversity at fine scales and very fre...
Article
Full-text available
• Most insect species remain unknown and for most described species, we know nothing about their ecology and interactions. Understanding the structure of species interaction webs can provide insight into geographic patterns and ecological drivers of diversity, the stability of communities, and energy flow through ecological systems. • We analysed a...
Article
A longstanding paradigm in ecology is that there are positive associations between herbivore diversity, specialization, and plant species diversity, with a focus on taxonomic diversity. However, phytochemical diversity is also an informative metric, as insect herbivores interact with host-plants not as taxonomic entities, but as sources of nutrient...
Article
Full-text available
The Lepidoptera of North America Network, or LepNet, is a digitization effort recently launched to mobilize biodiversity data from 3 million specimens of butterflies and moths in United States natural history collections (http://www.lep-net.org/). LepNet was initially conceived as a North American effort but the project seeks collaborations with mu...
Article
Full-text available
Synergistic effects of multiple plant secondary metabolites on upper trophic levels constitute an underexplored but potentially widespread component of coevolution and ecological interactions. Examples of plant secondary metabolites acting synergistically as insect deterrents are not common, and many studies focus on the pharmaceutical applications...
Data
Fig. S1 A map illustrating the locations of P. kelleyi plant and caterpillar samples that were collected near Yanayacu Biological Station near Cosanga, Napo Province, Ecuador in the eastern Andes (00°36′S and 77°53′W). Fig. S2 Partial correlation plots from the structural equation model (Fig. 2a) for paths II, III, IV, V, VI and IX. Fig. S3 Princ...
Article
Full-text available
Chemically mediated plant–herbivore interactions contribute to the diversity of terrestrial communities and the diversification of plants and insects. While our understanding of the processes affecting community structure and evolutionary diversification has grown, few studies have investigated how trait variation shapes genetic and species diversi...