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Population dynamics in prehistory and early history : new approaches using stable isotopes and genetics
Authors: --- --- ---
ISBN: 9783110266290 3110266296 311026630X 9783110266306 Year: 2012 Volume: 5 Publisher: Boston : De Gruyter,

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Abstract

Migrations and population dynamics are considered very problematic topics in the fields of ancient studies. Recent scholarship in (pre)historical population has generated new impulses by using scientific approaches using radiogenic and stable isotopes, and palaeogenetics, as well as computer simulation. As a result, the state of migration research has undergone rapid change. Several research groups presented papers at a conference held in Berlin in 2010, addressing specific historical aspects of population dynamics and migration, with no chronological or geographical restrictions, in the light of cutting-edge bio-archaeological research. This volume, divided into three larger thematic sections (isotope analysis, population genetics, and modelling and computer simulation), presents experiences and insights about methodological approaches, research results and prospects for future research in this area in a varied collection of papers. Scholars from widely diverse scientific disciplines present their approaches, findings and interpretations to an audience far broader than the circles of the individual disciplines.


Book
Effects of Species Introduction on Aquatic Communities
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Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Freshwater ecosystems are deeply affected by human pressure, such as species introduction, which remains a major concern for these ecosystems. The arrival of new species can have different ecological effects, and sometimes leads to biological invasions and adverse impacts. Introduced species establish new interactions (e.g., predation, competition) with the recipient community. These can modify the aquatic community’s structure, composition, and functions. Understanding these interactions remains a key concern in conservation biology. This Special Issue of Water aims to explore these topics.


Book
Effects of Species Introduction on Aquatic Communities
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Freshwater ecosystems are deeply affected by human pressure, such as species introduction, which remains a major concern for these ecosystems. The arrival of new species can have different ecological effects, and sometimes leads to biological invasions and adverse impacts. Introduced species establish new interactions (e.g., predation, competition) with the recipient community. These can modify the aquatic community’s structure, composition, and functions. Understanding these interactions remains a key concern in conservation biology. This Special Issue of Water aims to explore these topics.


Book
Effects of Species Introduction on Aquatic Communities
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Freshwater ecosystems are deeply affected by human pressure, such as species introduction, which remains a major concern for these ecosystems. The arrival of new species can have different ecological effects, and sometimes leads to biological invasions and adverse impacts. Introduced species establish new interactions (e.g., predation, competition) with the recipient community. These can modify the aquatic community’s structure, composition, and functions. Understanding these interactions remains a key concern in conservation biology. This Special Issue of Water aims to explore these topics.


Book
Biological Communities Respond to Multiple Human-Induced Aquatic Environment Change
Authors: ---
ISBN: 3039285459 3039285440 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Perturbations linked to the direct and indirect impacts of human activities during the Anthropocene affect the structure and functioning of aquatic ecosystems to varying degrees. Some perturbations involve stress to aquatic life, including soil and water acidification, soil erosion, loss of base cations, release of trace metals/organic compounds, and application of essential nutrients capable of stimulating primary productivity. Superimposed onto these changes, climate warming impacts aquatic environments via altering species’ metabolic processes and by modifying food web interactions. The interaction stressors is difficult to predict because of the differential response of species and taxonomic groups, interacting additively, synergistically, or antagonistically. Whenever different trophic levels respond differently to climate warming, food webs are restructured; yet, the consequences of warming-induced changes for the food web structure and long-term population dynamics of different trophic levels remain poorly understood. Such changes are crucial in lakes, where food web production is mainly due to ectotherms, which are highly sensitive to changes in their surrounding environment. Due to its remarkable physical inertia, including thermal stability, global warming also has a profound effect on groundwater ecosystems. Combining contemporary and palaeo data is essential to understand the degree to which mechanisms of stressors impact on lake biological communities and lake ecosystem functioning. The degree to which alterations can affect aquatic ecosystem structure and functioning also requires functional diversity to be addressed at the molecular level, to reconstruct the role different species play in the transfer of material and energy through the food web. In this issue, we present examples of the impact of different stressors and their interaction on aquatic ecosystems, providing long-term, metabolic, molecular, and paleolimnological analyses.


Book
Zooplankton Diversity and Pelagic Food Webs : Investigating Present and Past with Different Techniques
Authors: --- --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Zooplankton are of key importance in the structure and functioning of aquatic food webs. They contribute to a large part of the functional and structural biodiversity of predator and prey plankton communities. Promptly responding to long-term and seasonal changes in the physical and chemical environment, they are sensitive indicators of patterns and mechanisms of impact drivers, both natural and human induced. In this volume, we aim to present evidence for both long-term and seasonal changes in zooplankton community structure and dynamics, investigating different approaches from population dynamics to advanced molecular techniques and reconstructing past communities from subfossil remains in lake sediments.


Book
Zooplankton Diversity and Pelagic Food Webs : Investigating Present and Past with Different Techniques
Authors: --- --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Zooplankton are of key importance in the structure and functioning of aquatic food webs. They contribute to a large part of the functional and structural biodiversity of predator and prey plankton communities. Promptly responding to long-term and seasonal changes in the physical and chemical environment, they are sensitive indicators of patterns and mechanisms of impact drivers, both natural and human induced. In this volume, we aim to present evidence for both long-term and seasonal changes in zooplankton community structure and dynamics, investigating different approaches from population dynamics to advanced molecular techniques and reconstructing past communities from subfossil remains in lake sediments.


Book
Nutrition and Human Oral Health
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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This book contains the Nutrients Special Issue "Nutrition and Human Oral Health" edited by Dr. Kirstin Vach and Prof. Dr. Johan Woelber. It includes 18 wonderful publications that provide an outline of current scientific work in the field of nutritional dentistry.

Keywords

severe caries --- tooth decay --- dental --- early childhood --- early childhood caries --- malnutrition --- undernutrition --- stunting --- growth and development --- Punica granatum --- Vaccinium myrtillus --- Aronia melanocarpa --- punicalagin --- cyanidin 3-glucoside and hyperoside --- Streptococcus mutans --- Streptococcus sobrinus --- photosensitizer --- antimicrobial photodynamic treatment --- compositional data --- ratio fractions --- nutrition --- microbiome --- oral health --- pellicle --- linseed oil --- fatty acid --- ultrastructure --- in situ --- dental status --- older people --- elderly people --- systematic review --- dental caries --- diet therapy --- dentists --- dental auxiliaries --- nutritionists --- dietitian --- surveys and questionnaires --- qualitative research --- review --- periodontitis --- periodontal diseases --- scaling and root planning --- diet --- dietary protein --- Inula viscosa --- initial adhesion --- colony-forming units (CFU) --- live/dead staining --- fluorescence microscopy --- dietary patterns --- periodontal disease --- clinical attachment loss --- DMFT --- ketogenic diet --- periodontal inflammation --- gingivitis --- periodontal --- bone loss --- LDL --- vitamin D --- CBCT --- radiographic bone loss --- sarcopenic dysphagia --- sarcopenia --- dysphagia --- osteoporosis --- elderly --- probiotic --- clinical parameters --- prevention --- therapeutics --- questionnaires --- erosion --- young adults --- tooth wear --- dentistry --- inflammation --- Mediterranean diet --- periodontology --- caries --- stable isotope analysis --- bioarcheology --- n/a


Book
Zooplankton Diversity and Pelagic Food Webs : Investigating Present and Past with Different Techniques
Authors: --- --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Zooplankton are of key importance in the structure and functioning of aquatic food webs. They contribute to a large part of the functional and structural biodiversity of predator and prey plankton communities. Promptly responding to long-term and seasonal changes in the physical and chemical environment, they are sensitive indicators of patterns and mechanisms of impact drivers, both natural and human induced. In this volume, we aim to present evidence for both long-term and seasonal changes in zooplankton community structure and dynamics, investigating different approaches from population dynamics to advanced molecular techniques and reconstructing past communities from subfossil remains in lake sediments.

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