The Timing And Extent Of Water Limitation Structures Trophic Interactions In A Terrestrial Plant Insect System PDF Download

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The Timing and Extent of Water Limitation Structures Trophic Interactions in a Terrestrial Plant-insect System

The Timing and Extent of Water Limitation Structures Trophic Interactions in a Terrestrial Plant-insect System
Author: Ruiping Luo
Publisher:
Total Pages: 0
Release: 2021
Genre:
ISBN:

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In many terrestrial systems, water is an important resource that impacts plant growth, survival and responses to herbivory. These impacts often cascade to affect herbivores and their predators, altering trophic interactions. Working with milkweed plants and aphid herbivores, I investigated: 1) The interactive effects of water availability and temperature on plant-herbivore-predator dynamics and 2) The effect of drought timing on plant-herbivore interactions. I show that water is important in shaping trophic dynamics. While I did not find evidence for interactions between temperature and water availability impacting trophic dynamics, my first study demonstrates the influence of water and temperature on herbivore populations differed over time, and my second study showed both plants and herbivores to be highly sensitive to changes in the timing of short-term drought. This research illustrates the significance of considering temporal scale when examining environmental change and trophic dynamics.


Proceedings

Proceedings
Author:
Publisher:
Total Pages: 798
Release: 2006
Genre: Biology
ISBN:

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The Princeton Guide to Ecology

The Princeton Guide to Ecology
Author: Simon A. Levin
Publisher: Princeton University Press
Total Pages: 826
Release: 2012-09-30
Genre: Nature
ISBN: 0691156042

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The Princeton Guide to Ecology is a concise, authoritative one-volume reference to the field's major subjects and key concepts. Edited by eminent ecologist Simon Levin, with contributions from an international team of leading ecologists, the book contains more than ninety clear, accurate, and up-to-date articles on the most important topics within seven major areas: autecology, population ecology, communities and ecosystems, landscapes and the biosphere, conservation biology, ecosystem services, and biosphere management. Complete with more than 200 illustrations (including sixteen pages in color), a glossary of key terms, a chronology of milestones in the field, suggestions for further reading on each topic, and an index, this is an essential volume for undergraduate and graduate students, research ecologists, scientists in related fields, policymakers, and anyone else with a serious interest in ecology. Explains key topics in one concise and authoritative volume Features more than ninety articles written by an international team of leading ecologists Contains more than 200 illustrations, including sixteen pages in color Includes glossary, chronology, suggestions for further reading, and index Covers autecology, population ecology, communities and ecosystems, landscapes and the biosphere, conservation biology, ecosystem services, and biosphere management


Agroecology

Agroecology
Author: Stephen R. Gliessman
Publisher: CRC Press
Total Pages: 386
Release: 2014-12-09
Genre: Nature
ISBN: 1498728464

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Agroecology is a science, a productive practice, and part of a social movement that is at the forefront of transforming food systems to sustainability. Building upon the ecological foundation of the agroecosystem, Agroecology: The Ecology of Sustainable Food Systems, Third Edition provides the essential foundation for understanding sustainability i


Impact of Water Availability on Multiple Aspects of Plant-insect Interactions and Insect-induced Drought Responses in Plants

Impact of Water Availability on Multiple Aspects of Plant-insect Interactions and Insect-induced Drought Responses in Plants
Author: Po An Lin
Publisher:
Total Pages:
Release: 2021
Genre:
ISBN:

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Drought and herbivory are two stresses that threaten productivity and survival of plants. While plant responses to either drought or herbivory are well studied, the responses of plants to concurrent drought and herbivory are unclear. This dissertation investigates the impact of water availability on plant-insect interactions using chemical ecology, plant physiology, molecular biology, and ecology approaches. We discovered that drought stress enhances plant resistance against insect herbivores and reduces plant tolerance against defoliation. In addition to its negative impact on plant tolerance, drought stress also reduces the number of insect natural enemies and other arthropods on plants. The reduction in arthropod number was found to benefit certain insect herbivores by reducing negative species interactions such as competition and predation. We hypothesized that the reduction in arthropod number on drought-stressed plants are partly associated with changes in plant volatile emission and found that the detrimental effects of drought on natural enemy attraction was associated with changes in herbivore-induced plant volatile (HIPV) emissions. Using current knowledge on ecology of drought-plant-insect interactions, we discussed the implications of water availability on plant anti-herbivore defenses and the integration of water and pest management in crop production around the world. Furthermore, we discover the ability of insect herbivores to induce drought-like response for their own benefit. We identify a hydrogen peroxide-producing salivary protein (glucose oxidase, GOX) in caterpillar Helicoverpa zea that triggers stomatal closure in plants. Stomatal closures were further linked to inhibition of important defense related HIPVs, such as (Z)-3-hexenyl acetate and (Z)-3-hexenol, which is similar to HIPV changes caused by drought. The findings discover an herbivore adaptation that utilize drought-like responses of plants for their own benefits and show the links between stomatal behavior and HIPV emission. This is the first study that utilizes CRISPR-Cas9 mutagenesis to study salivary protein function of insect herbivores and showed that organisms other than microbes can modulate behavior of stomata. As changes in water availability and pest continue to threaten plants in both natural and agricultural systems under climate changes, this dissertation contributes to a better understanding of the impacts of drought stress on plant-insect interactions from molecular, organismal, to populational levels. Additionally, we highlight the ability of insect herbivores to induce drought-like responses of plants, such as stomatal closure, for their own benefit, which is a novel strategy that have not been reported to date. We further demonstrate that stomata are important parts of plant responses to herbivores, in addition to its roles in responses to abiotic stresses and pathogen attack. However, significant knowledge gap exists in stomatal functions in plant-insect interactions, we are certain that the findings in this dissertation will incite further research and lead to a better understanding of stomatal functions in plant responses to their environment.


Aquatic Food Webs

Aquatic Food Webs
Author: Andrea Belgrano
Publisher: Oxford University Press, USA
Total Pages: 274
Release: 2005
Genre: Science
ISBN: 0198564821

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'Aquatic Food Webs' provides a current synthesis of theoretical and empirical food web research. The textbook is suitable for graduate level students as well as professional researchers in community, ecosystem, and theoretical ecology, in aquatic ecology, and in conservation biology.


Evolution

Evolution
Author: Monroe W. Strickberger
Publisher: Jones & Bartlett Learning
Total Pages: 742
Release: 2005
Genre: Music
ISBN: 9780763738242

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Tropical Biology and Conservation Management - Volume V

Tropical Biology and Conservation Management - Volume V
Author: Kleber Del Claro
Publisher: EOLSS Publications
Total Pages: 322
Release: 2009-05-11
Genre:
ISBN: 1848262760

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This Encyclopedia of Tropical Biology and Conservation Management is a component of the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Tropical environments cover the most part of still preserved natural areas of the Earth. The greatest biodiversity, as in terms of animals and plants, as microorganisms, is placed in these hot and rainy ecosystems spread up and below the Equator line. Additionally, the most part of food products, with vegetal or animal origin, that sustain nowadays human beings is direct or undirected dependent of tropical productivity. Biodiversity should be looked at and evaluated not only in terms of numbers of species, but also in terms of the diversity of interactions among distinct organisms that it maintains. In this sense, the complexity of web structure in tropical systems is a promise of future to nature preservation on Earth. In the chemicals of tropical plant and animals, could be the cure to infinite number of diseases, new food sources, and who knows what more. Despite these facts tropical areas have been exploited in an irresponsible way for more than 500 years due the lack of an ecological conscience of men. Exactly in the same way we did with temperate areas and also tropical areas in the north of Equator line. Nowadays, is estimated that due human exploitation, nation conflicts and social problems, less than 8% of tropical nature inside continental areas is still now untouchable. The extension of damage in the tropical areas of oceans is unknown. Thus so, all knowledge we could accumulate about tropical systems will help us, as in the preservations of these important and threatened ecosystems as in a future recuperation, when it was possible. Only knowing the past and developing culture, mainly that directed to peace, to a better relationship among nations and responsible use and preservation of natural resources, human beings will have a long future on Earth. These volumes, Tropical Biology and Natural Resources was divided in sessions to provide the reader the better comprehension possible of issue and also to enable future complementation and improvements in the encyclopedia. Like we work with life, we intended to transform this encyclopedia also in a “life” volume, in what new information could be added in any time. As president of the encyclopedia and main editor I opened the theme with an article titled: “Tropical Biology and Natural resources: Historical Pathways and Perspectives”, providing the reader an initial view of the origins of human knowledge about the tropical life, and what we hope to the future. In the sequence we have more than 100 chapters distributed in tem sessions: Tropical Ecology (TE); Tropical Botany (TB); Tropical Zoology (TZ); Savannah Ecosystems (SE); Desert Ecosystems (DE); Tropical Agriculture (TA); Natural History of Tropical Plants (NH); Human Impact on Tropical Ecosystems (HI); Tropical Phytopathology and Entomology (TPE); Case Studies (CS). This 11-volume set contains several chapters, each of size 5000-30000 words, with perspectives, applications and extensive illustrations. It is the only publication of its kind carrying state-of-the-art knowledge in the fields of Tropical Biology and Conservation Management and is aimed, by virtue of the several applications, at the following five major target audiences: University and College Students, Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs.


Invasive Species in Forests and Rangelands of the United States

Invasive Species in Forests and Rangelands of the United States
Author: Therese M. Poland
Publisher: Springer Nature
Total Pages: 455
Release: 2021-02-01
Genre: Science
ISBN: 3030453677

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This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.