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Book
Intra- and inter-species interactions in microbial communities
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Year: 2015 Publisher: Frontiers Media SA

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Abstract

Recent developments in various “OMICs” fields have revolutionized our understanding of the vast diversity and ubiquity of microbes in the biosphere. However, most of the current paradigms of microbial cell biology, and our view of how microbes live and what they are capable of, are derived from in vitro experiments on isolated strains. Even the co-culturing of mixed species to interrogate community behavior is relatively new. But the majority of microorganisms lives in complex communities in natural environments, under varying conditions, and often cannot be cultivated. Unless we obtain a detailed understanding of the near-native 3D ultrastructure of individual community members, the 3D spatial community organization, their metabolic interdependences, coordinated gene expression and the spatial organization of their macromolecular machines inventories as well as their communication strategies, we won’t be able to truly understand microbial community life. How spatial and also temporal organization in cell–cell interactions are achieved remains largely elusive. For example, a key question in microbial ecology is what mechanisms microbes employ to respond when faced with prey, competitors or predators, and changes in external factors. Specifically, to what degree do bacterial cells in biofilms act individually or with coordinated responses? What are the spatial extent and coherence of coordinated responses? In addition, networks linking organisms across a dynamic range of physical constraints and connections should provide the basis for linked evolutionary changes under pressure from a changing environment. Therefore, we need to investigate microbial responses to altered or adverse environmental conditions (including phages, predators, and competitors) and their macromolecular, metabolic responses according to their spatial organization. We envision a diverse set of tools, including optical, spectroscopical, chemical and ultrastructural imaging techniques that will be utilized to address questions regarding e.g. intra- and inter-organism interactions linked to ultrastructure, and correlated adaptive responses in gene expression, physiological and metabolic states as a consequence of the alterations of their environment. Clearly strategies for co-evolution and in general the display of adaptive strategies of a microbial network as a response to the altered environment are of high interest. While a special focus will be placed on terrestrial sole-species or mixed biofilms, we are also interested in aquatic systems, biofilms in general and microbes living in symbiosis. In this Research Topic, we wish to summarize and review results investigating interactions and possibly networks between microbes of the same or different species, their co-occurrence, as well as spatiotemporal patterns of distribution. Our goal is to include a broad spectrum of experimental and theoretical contributions, from research and review articles to hypothesis and theory, aiming at understanding microbial interactions at a systems level.


Book
Behavioural and Ecological Consequences of Urban Life in Birds
Authors: --- ---
Year: 2018 Publisher: Frontiers Media SA

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Abstract

Urbanization is next to global warming the largest threat to biodiversity. Indeed, it is becoming increasingly evident that many bird species get locally extinct as a result of urban development. However, many bird species benefit from urbanization, especially through the abundance of human-provided resources, and increase in abundance and densities. These birds are intriguing to study in relation to its resilience and adaption to urban environments, but also in relation to its susceptibility and the potential costs of urban life. This Research Topic consisting of 30 articles (one review, two meta-analyzes and 27 original data papers) provides insights into species and population responses to urbanization through diverse lenses, including biogeography, community ecology, behaviour, life history evolution, and physiology.


Book
Arthropod Interactions and Responses to Disturbance in a Changing World
Authors: --- ---
Year: 2020 Publisher: Frontiers Media SA

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Abstract

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact


Book
Ecological Status Assessment of Transitional Waters
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Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Coastal transitional ecosystems include a wide range of morphological features—i.e., lagoons, wetlands, estuaries, deltas, and so on. According to the Ramsar Convention, “they are among the most diverse and productive ecosystems” and are continually “degraded and converted to other uses”. To protect and restore these highly valuable ecosystems, knowledge of their processes and the assessment of their ecological conditions under anthropogenic pressures is of fundamental importance. The present book contains eight original research papers and a review that provide useful tools to understand the structure and function of transitional waters worldwide. The results allow us to assess the impact of anthropogenic activities and inform stakeholders on the actions that can be taken to manage them. The papers in this book provide different ecological approaches to investigate some main impacts: - benthic and nekton communities were studied to assess the impact of eutrophication and salinity changes; - biological processes in carbon dioxide fluxes were assessed in the framework of climate change; - nekton communities were discussed in relation to habitat morphological degradation; - the role of invasive alien species was considered.


Book
Diversity, Biogeography and Community Ecology of Ants
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Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Ants are a ubiquitous, highly diverse, and ecologically dominant faunal group. They represent a large proportion of global terrestrial faunal biomass and play key ecological roles as soil engineers, predators, and re-cyclers of nutrients. They have particularly important interactions with plants as defenders against herbivores, as seed dispersers, and as seed predators. One downside to the ecological importance of ants is that they feature on the list of the world’s worst invasive species. Ants have also been important for science as model organisms for studies of diversity, biogeography, and community ecology. Despite such importance, ants remain remarkably understudied. A large proportion of species are undescribed, the biogeographic histories of most taxa remain poorly known, and we have a limited understanding of spatial patterns of diversity and composition, along with the processes driving them. The papers in this Special Issue collectively address many of the most pressing questions relating to ant diversity. What is the level of ant diversity? What is the origin of this diversity, and how is it distributed at different spatial scales? What are the roles of niche partitioning and competition as regulators of local diversity? How do ants affect the ecosystems within which they occur? The answers to these questions provide valuable insights not just for ants, but for biodiversity more generally.


Book
From Laboratory Studies to Court Evidence: Challenges in Forensic Entomology
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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In 2001, Benecke concluded a review on the history of forensic entomology with these optimistic words: "basic research and advanced application of forensic entomology (…) has opened the way to routine casework". At the same time, the TV show Crime Scene Investigation (CSI) largely brought forensic entomology to light. However, the show also cruelly pointed out its limits: After the team leader explained to his colleague how insects can help determine the time of death, the team leader added "You've still got to convince a jury", to which the colleague promptly responded "On guns. It's got to be better than bugs. Less Latin." Indeed, several factors—including complexity, inherent limitations, and the rapid evolution of scientific knowledge—explain the slow acceptance of insect-based evidence. In this context, this Special Issue focuses on the articulation between laboratory studies and casework, a major challenge for the future of forensic entomology.

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