When the “selfish herd” becomes the “frozen herd”: spatial dynamics and population persistence in a colonial seabird

Ecology ◽  
2019 ◽  
Vol 100 (10) ◽  
Author(s):  
Philip S. McDowall ◽  
Heather J. Lynch
Keyword(s):  
Spatial Dynamics ◽  
Population Persistence ◽  
Selfish Herd ◽  
Colonial Seabird

Sozial-räumliche Dynamiken der Agrartreibstoffe.

2016 ◽  
Vol 46 (184) ◽  
pp. 423-440 ◽  
Author(s):  
Kristina Dietz ◽  
Bettina Engels ◽  
Oliver Pye
Keyword(s):  
Political Economy ◽  
Capital Flows ◽  
Spatial Dynamics ◽  
Financial Sector ◽  
Comprehensive Analysis ◽  
Spatial Theory ◽  
Global Political Economy

This article explores the spatial dynamics of agrofuels. Building on categories from the field of critical spatial theory, it shows how these categories enable a comprehensive analysis of the spatial dynamics of agrofuels that links the macro-structures of the global political economy to concrete, place-based struggles. Four core socio-spatial dynamics of agrofuel politics are highlighted and applied to empirical findings: territorialization, the financial sector as a new scale of regulation, place-based struggles and transnational spaces of resources and capital flows.

Temporal and spatial dynamics of pulse production in India

2017 ◽  
Author(s):  
International Food Policy Research Institute (IFPRI)
Keyword(s):  
Spatial Dynamics ◽  
Temporal And Spatial ◽  
Pulse Production

REPRESENTAÇÃO MULTIESCALAR DO AMBIENTE GEOMORFOLÓGICO DA PRAIA DAS FONTES – CEARÁ

2019 ◽  
Vol 21 (2) ◽  
pp. 1217-1233
Author(s):  
Filipe Maciel De Moura ◽  
Antônio Rodrigues Ximenes Neto ◽  
Adryane Gorayeb ◽  
Davis Pereira De Paula ◽  
Fábio Perdigão Vasconcelos
Keyword(s):  
Coastal Plain ◽  
Environmental Conditions ◽  
Spatial Dynamics ◽  
Point Of View ◽  
Coastal Geomorphology ◽  
Multi Scale ◽  
Morphological System

A planície costeira brasileira, em especial a do Nordeste do Brasil, apresenta um sistema morfológico que sofre diversas pressões do ponto de vista do uso e ocupação dos seus espaços. Logo, o entendimento da dinâmica natural e espacial desse ambiente requer a adoção de metodologias que contemplem uma abordagem em múltiplas escalas. Neste sentido, este trabalho tem o intuito de analisar as múltiplas morfologias associadas a praia das Fontes, em Beberibe-CE, em diferentes escalas taxonômicas. Esta análise auxiliou na realização de um prognostico das condições ambientais e de sua capacidade de suporte. Metodologicamente aplicou-se a proposta de Bertrand (1971), adotando-se apenas as unidades inferiores que inclui os níveis taxonômicos regionais e/ou locais, compreendendo os geossistemas, geofáciese os geótopos. Os resultados alcançados foram satisfatórios, uma vez que as unidades mapeadas foram validadas em atividades de campo para reconhecimento do produto cartográfico.Palavras-chave: Análise Multiescalar. Geomorfologia Costeira. Formação Barreiras. ABSTRACTThe Brazilian coastal plain, especially in the Northeast of Brazil, presents a morphological system that undergoes several pressures from the point of view of the use and occupation of its spaces. Therefore, the understanding of the natural and spatial dynamics of this environment requires the adoption of methodologies that contemplate a multi-scale approach. In this sense, this work has the purpose of analyzing the multiple morphologies associated to Praia das Fontes, in Beberibe-CE, at different taxonomic scales. This analysis assisted in the accomplishment of a prognosis of the environmental conditions and their support capacity. Methodologically Bertrand's (1972) proposal was applied, adopting only the lower units that includes regional and / or local taxonomic levels, including geosystems, geophysics and geo-objects. The results were satisfactory, since the mapped units were validated in field activities to recognize the cartographic product.Keywords: Multiscalar Analysis. Coastal Geomorphology. Training Barriers. RESUMENLa llanura costera brasileña, especialmente en el noreste de Brasil, tiene un sistema morfológico que sufre varias presiones desde el punto de vista del uso y la ocupación de sus espacios. Por lo tanto, comprender la dinámica natural y espacial de este entorno requiere la adopción de metodologías que incluyan un enfoque de múltiples escalas. En este sentido, este trabajo tiene como objetivo analizar las múltiples morfologías asociadas a la playa de Fontes, en Beberibe-CE, en diferentes escalas taxonómicas. Este análisis ayudó a hacer una predicción de las condiciones ambientales y su capacidad de carga. Metodológicamente, se aplicó la propuesta de Bertrand (1971), adoptando solo las unidades inferiores, que incluyen niveles taxonómicos regionales y / o locales, incluidos los geosistemas, geofacies y geotopos. Los resultados obtenidos fueron satisfactorios, ya que las unidades mapeadas fueron validadas en actividades de campo para el reconocimiento de productos cartográficos.Palabras clave: Análisis multiescala. Geomorfología costera. Barreras de entrenamiento.

Spatial-temporal transmission dynamics and control of infectious diseases: Ebola virus disease (EVD) as a case study

2018 ◽  
Author(s):  
Cécile Viboud ◽  
Hélène Broutin ◽  
Gerardo Chowell
Keyword(s):  
Infectious Diseases ◽  
Disease Transmission ◽  
Ebola Virus ◽  
Temporal Dynamics ◽  
Virus Disease ◽  
Spatial Dynamics ◽  
Childhood Diseases ◽  
Middle Income ◽  
Theoretical Concepts ◽  
Dynamics And Control

Disentangling the spatial-temporal dynamics of infectious disease transmission is important to address issues of disease persistence, epidemic growth and optimal control. In this chapter, we review key concepts relating to the spatial-temporal dynamics of infectious diseases in meta-populations, whereby geographically separate subpopulations are connected by migration or mobility rates. We review the dynamics of colonization, persistence and extinction of emerging and recurrent pathogens in meta-populations; the role of demographic and environmental factors; and geographic heterogeneity in epidemic growth rate. We illustrate theoretical concepts by reviewing the spatial dynamics of childhood diseases and other acute infections in low- and middle-income countries, and provide a detailed description of the spatial-temporal dynamics of the 2014–16 Ebola epidemic in West Africa. We further discuss how increased availability of empirical data and recent methodological developments provide a deeper mechanistic understanding of transmission processes in space and time, and make recommendations for future work.

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