The research of the last decade has demonstrated that ecosystems and human systems are influenced by multiple factors, including climate, land use, and the by-products of resource use. Understanding the net impact of a suite of simultaneously occurring environmental changes is essential for developing effective response strategies. Using case studies on drought and a wide range of atmosphere-ecosystem interactions, a workshop was held in September 2005 to gather different perspectives on multiple stress scenarios. The overarching lesson of the workshop is that society will require new and improved strategies for coping with multiple stresses and their impacts on natural socioeconomic systems. Improved communication among stakeholders; increased observations (especially at regional scales); improved model and information systems; and increased infrastructure to provide better environmental monitoring, vulnerability assessment, and response analysis are all important parts of moving toward better understanding of and response to situations involving multiple stresses. During the workshop, seven near-term opportunities for research and infrastructure that could help advance understanding of multiple stresses were also identified.

There is consensus that loss of biodiversity is a defining feature of the Anthropocene, with potentially severe consequences for human food security and well-being. Of particular concern are global declines in insect pollinators, such as bees, flies, beetles and butterflies, as their roles in sustaining ecosystem functions and ensuring food production are indispensable. A wide array of abiotic and biotic stressors likely govern the observed insect declines and losses of wild and managed insect pollinators, respectively. For instance, habitat destruction and fragmentation can not only lead to smaller and isolated populations that are vulnerable to environmental stochasticity or inbreeding depression, but also lead to poor nutrition as floral abundance and diversity are reduced. Further key stressors are pests and pathogens, climate change, intensified agriculture and environmental pollution (e.g., pesticides). These environmental stressors may interact with one another and generate complex effects that amplify the direct consequences of a single given stressor. Unfortunately, there is a lack of knowledge concerning how even the most important environmental stressors may interact to affect insect pollinators. The goal of this effort is to develop a platform that brings together the latest information on how abiotic and biotic stressors interact to impact insect pollinator health. Only by bringing together different lines of evidence will we be able to better predict how these environmental stressors will affect insect pollinators. An improved understanding will also facilitate the development of more effective and sustainable management strategies that will enable stakeholders to implement adequate and sustainable measures to safeguard insect pollinators. This Research Topic welcomes both Original Research and Reviews, as well as Commentary or Opinion articles that address the topic of environmental stressor interactions, and their impact on insect pollinator health. Submissions should be based on, but not limited to: - How combined environmental stressors affect insect pollinators using molecular, physiological, behavioral, ecological or evolutionary approaches - Experimental or survey work conducted under laboratory, semi-field, or field conditions - Unravelling the mechanisms underlying combined stressor interactions - What can be done to limit the impact of combined environmental exposure in the field

This new volume aims to be the single source that discusses in a comprehensive and elaborate way the photosynthetic and respiratory mechanisms in plants under hostile situations and the proper mitigating strategies to continue uninterrupted photosynthesis and respiration under such situations. Photosynthesis and respiration are the two main physiological processes for sugar biosynthesis and mobilization for driving all other vital functions. This volume delivers a wealth of sound information on these processes for scientists, researchers, and academicians. With chapters from renowned scientists, researchers, and global leaders, this volume focuses on the effect of environmental stressors on photosynthetic pigments, photosystems, activities of photosynthetic enzymes and protein complexes, PSII photochemistry, carbon fixation pathways, photosynthetic efficiency, glycolytic and Krebs cycle pathways, and ATP production and electron transport chain of plants. The recovery of photosynthesis and respiration through application of phytohormones, signaling molecules, and other protective agents are also emphasized. Genetic engineering to enhance photosynthetic efficiency is highlighted as well.

The groundbreaking Encyclopedia of Ecology provides an authoritative and comprehensive coverage of the complete field of ecology, from general to applied. It includes over 500 detailed entries, structured to provide the user with complete coverage of the core knowledge, accessed as intuitively as possible, and heavily cross-referenced. Written by an international team of leading experts, this revolutionary encyclopedia will serve as a one-stop-shop to concise, stand-alone articles to be used as a point of entry for undergraduate students, or as a tool for active researchers looking for the latest information in the field. Entries cover a range of topics, including: Behavioral Ecology Ecological Processes Ecological Modeling Ecological Engineering Ecological Indicators Ecological Informatics Ecosystems Ecotoxicology Evolutionary Ecology General Ecology Global Ecology Human Ecology System Ecology The first reference work to cover all aspects of ecology, from basic to applied Over 500 concise, stand-alone articles are written by prominent leaders in the field Article text is supported by full-color photos, drawings, tables, and other visual material Fully indexed and cross referenced with detailed references for further study Writing level is suited to both the expert and non-expert Available electronically on ScienceDirect shortly upon publication

Continuous discoveries in plant and crop physiology have resulted in an abundance of new information since the publication of the third edition of the Handbook of Plant and Crop Physiology. Following its predecessors, the fourth edition of this well-regarded handbook offers a unique, comprehensive, and complete collection of topics in the field of plant and crop physiology. Divided into eleven sections, for easy access of information, this edition contains more than 90 percent new material, substantial revisions, and two new sections. The handbook covers the physiology of plant and crop growth and development, cellular and molecular aspects, plant genetics and production processes. The book presents findings on plant and crop growth in response to climatic changes, and considers the potential for plants and crops adaptation, exploring the biotechnological aspects of plant and crop improvement. This content is used to plan, implement, and evaluate strategies for increasing plant growth and crop yield. Readers benefit from numerous tables, figures, case studies and illustrations, as well as thousands of index words, all of which increase the accessibility of the information contained in this important handbook. New to the Edition: Contains 37 new chapters and 13 extensively revised and expanded chapters from the third edition of this book. Includes new or modified sections on soil-plant-water-nutrients-microorganisms physiological relations; and on plant growth regulators, both promoters and inhibitors. Additional new and modified chapters cover the physiological responses of lower plants and vascular plants and crops to metal-based nanoparticles and agrichemicals; and the growth responses of plants and crops to climate change and environmental stresses. With contributions from 95 scientists from 20 countries, this book provides a comprehensive resource for research and for university courses, covering plant and crop physiological responses under normal and stressful conditions ranging from cellular aspects to whole plants.

Anthropogenic climate change has driven widespread changes in marine environments, including ocean warming, ocean acidification, and the formation of hypoxic zones. Such environmental changes would pose direct challenges to the survival and adaptation of aquatic organisms, greatly affecting the biodiversity of marine life and marine ecosystems. Changes in the marine environment are likely to have strong effects at the physiological, behavioral, and molecular levels, with implications at the individual, population, and species levels, resulting in the degradation of genetic resources through massive mortality. For example, the ingestion, digestion, respiration, and growth of aquatic animals were greatly depressed under extreme environments. In the long run, maintaining a sustainable ocean would require a better understanding of the adaptation of marine animals in response to the effects of multiple environmental stressors. The Research Topic is aimed to discuss the potential impacts of individual and compounded extreme environments on aquatic animals, as well as the regulatory mechanisms and adaptation strategies of marine species to cope with these impacts.

A guide to environmental fluctuations that examines photosynthesis under both controlled and stressed conditions Photosynthesis, Productivity and Environmental Stress is a much-needed guide that explores the topics related to photosynthesis (both terrestrial and aquatic) and puts the focus on the basic effect of environmental fluctuations. The authors—noted experts on the topic—discuss photosynthesis under both controlled and stressed conditions and review new techniques for mitigating stressors including methods such as transgeneics, proteomics, genomics, ionomics, metabolomics, micromics, and more. In order to feed our burgeoning world population, it is vital that we must increase food production. Photosynthesis is directly related to plant growth and crop production and any fluctuation in the photosynthetic activity imposes great threat to crop productivity. Due to the environmental fluctuations plants are often exposed to the different environmental stresses that cause decreased photosynthetic rate and problems in the plant growth and development. This important book addresses this topic and: Covers topics related to terrestrial and aquatic photosynthesis Highlights the basic effect of environmental fluctuations Explores common stressors such as drought, salinity, alkalinity, temperature, UV-radiations, oxygen deficiency, and more Contains methods and techniques for improving photosynthetic efficiency for greater crop yield Written for biologists and environmentalists, Photosynthesis, Productivity and Environmental Stress offers an overview of the stressors affecting photosynthesis and includes possible solutions for improved crop production.