87:6567 Spatio-temporal dynamics of bacterioplankton in the area of the Mediterranean perturbed by sewage effluent from the city of Marseille

1987 ◽  
Vol 34 (11) ◽  
pp. 997
Keyword(s):  
Temporal Dynamics ◽  
Sewage Effluent ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
The City

scholarly journals The shifting distribution of Mediterranean fishes: a spatio-temporal assessment based on Local Ecological Knowledge .

2019 ◽  
Author(s):  
Ernesto Azzurro ◽  
Valerio Sbragaglia ◽  
Jacopo Cerri ◽  
Michel Bariche ◽  
Luca Bolognini ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Temporal Dynamics ◽  
Local Ecological Knowledge ◽  
Rapid Change ◽  
Species Abundance ◽  
Global Ocean ◽  
Small Scale ◽  
Ecological Knowledge ◽  
The Mediterranean ◽  
Spatio Temporal

A major problem worldwide is the rapid change in species abundance and distribution, which is rapidly restructuring the biological communities of many ecosystems under changing climates. Tracking these transformations in the marine environment is crucial but our understanding is often hampered by the absence of historical data and by the practical challenge of survey large geographical areas. Here we focus on the Mediterranean Sea, a region which is warming faster than the rest of the global ocean, tracing back the spatio-temporal dynamic of species, which are emerging the most in terms of increasing abundances and expanding distributions. To this aim, we accessed the Local Ecological Knowledge (LEK) of small-scale and recreational fishers reconstructing the dynamics of fish perceived as ‘new’ or increasing in different fishing area. Over 500 fishers across 95 locations and 9 different countries were interviewed and semi-quantitative information on yearly changes in species abundance was collected. Overall, 75 species were mentioned by the respondents, being the most frequent citations related to warm-adapted species of both, native and exotic origin. Respondents belonging to the same biogeographic sectors described coherent spatio-temporal dynamics, and gradients along latitudinal and longitudinal axes were revealed. This information provides a more complete understanding of recent bio-geographical changes in the Mediterranean Sea and it also demonstrates that adequately structured LEK methodology might be applied successfully beyond the local scale, across national borders and jurisdictions. Acknowledging this potential through macro-regional coordination, could pave the ground for future large-scale aggregations of individual observations, increasing our potential for integrated monitoring and conservation planning at the regional or even global level.

scholarly journals The spatio-temporal epidemic dynamics of COVID-19 outbreak in Africa

2020 ◽  
Author(s):  
Ezra Gayawan ◽  
Olawale Awe ◽  
Bamidele M Oseni ◽  
Ikemefuna C. Uzochukwu ◽  
Adeshina Adekunle ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
Poisson Model ◽  
The Novel ◽  
African Continent ◽  
Scarce Resources ◽  
Epidemic Dynamics ◽  
Disease Patterns ◽  
Spatio Temporal ◽  
Novel Coronavirus ◽  
The City

AbstractThe novel coronavirus (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), emerged in the city of Wuhan, China in December 2019. Although, the disease appears on the African continent late, it has spread to virtually all the countries. We provide early spatio-temporal dynamics of COVID-19 within the first 62 days of the disease’s appearance on the African continent. We used a two-parameter hurdle Poisson model to simultaneously analyze the zero counts and the frequency of occurrence. We investigate the effects of important healthcare capacities including hospital beds and number of medical doctors in the different countries. The results show that cases of the pandemic vary geographically across Africa with notable high incidence in neighboring countries particularly in West and North Africa. The burden of the disease (per 100,000) was most felt in Djibouti Tunisia, Morocco and Algeria. Temporally, during the first 4 weeks, the burden was highest in Senegal, Egypt and Mauritania, but by mid-April it shifted to Somalia, Chad, Guinea, Tanzania, Gabon, Sudan, and Zimbabwe. Currently, Namibia, Angola, South Sudan, Burundi and Uganda have the least burden. The findings could be useful in implementing epidemiological intervention and allocation of scarce resources based on heterogeneity of the disease patterns.

scholarly journals Dynamics of the energy seascape can explain intra-specific variations in sea-crossing behaviour of soaring birds

2019 ◽  
Author(s):  
E. Nourani ◽  
W. M. G. Vansteelant ◽  
P. Byholm ◽  
K. Safi
Keyword(s):  
Temporal Dynamics ◽  
Low Cost ◽  
Available Energy ◽  
Ecological Barriers ◽  
Open Sea ◽  
Specific Variation ◽  
Soaring Birds ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
Soaring Flight

AbstractThermal soaring birds extract energy from the atmosphere to achieve energetically low-cost movement. When encountering regions that are energetically costly to fly over, such as open seas, they attempt to adjust the spatio-temporal pattern of their passage to maximize energy extraction from the atmosphere over these ecological barriers. We apply the concept of energy landscapes to investigate the spatio-temporal dynamics of energy availability over the open sea for soaring flight. We specifically investigated how the “energy seascape” may shape age-specific sea-crossing behaviour of European honey buzzards Pernis apivorus over the Mediterranean Sea in autumn. We found uplift potential over the sea to be the main determinant of sea-crossing length, rather than wind conditions. Considering this variable as a proxy for available energy over the sea, we constructed the energy seascape for the autumn migration season using forty years of temperature data. Our results indicate that early-migrating adult buzzards are likely to encounter adverse energy subsidence over the Mediterranean, whereas late-migrating juveniles face less adverse flight conditions, and even conditions conducive to soaring flight. Our study provides evidence that the dynamics of the energy landscape can explain intra-specific variation in migratory behaviour also at sea.

scholarly journals The spatio-temporal epidemic dynamics of COVID-19 outbreak in Africa

2020 ◽  
Vol 148 ◽  
Author(s):  
Ezra Gayawan ◽  
Olushina O. Awe ◽  
Bamidele M. Oseni ◽  
Ikemefuna C. Uzochukwu ◽  
Adeshina Adekunle ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
Virus Disease ◽  
Poisson Model ◽  
The Novel ◽  
Scarce Resources ◽  
Epidemic Dynamics ◽  
Disease Patterns ◽  
High Incidence ◽  
Spatio Temporal ◽  
The City

Abstract Corona virus disease 2019 (COVID-19), caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was first detected in the city of Wuhan, China in December 2019. Although, the disease appeared in Africa later than other regions, it has now spread to virtually all countries on the continent. We provide early spatio-temporal dynamics of COVID-19 within the first 62 days of the disease's appearance on the African continent. We used a two-parameter hurdle Poisson model to simultaneously analyse the zero counts and the frequency of occurrence. We investigate the effects of important healthcare capacities including hospital beds and number of medical doctors in different countries. The results show that cases of the pandemic vary geographically across Africa with notably high incidence in neighbouring countries particularly in West and North Africa. The burden of the disease (per 100 000) mostly impacted Djibouti, Tunisia, Morocco and Algeria. Temporally, during the first 4 weeks, the burden was highest in Senegal, Egypt and Mauritania, but by mid-April it shifted to Somalia, Chad, Guinea, Tanzania, Gabon, Sudan and Zimbabwe. Currently, Namibia, Angola, South Sudan, Burundi and Uganda have the least burden. These findings could be useful in guiding epidemiological interventions and the allocation of scarce resources based on heterogeneity of the disease patterns.

scholarly journals Coworking in Lisbon. Experiences of collaboration and sharing on changing urban context

2020 ◽  
Author(s):  
Sofia Morgado ◽  
◽  
Elisabete Tomaz ◽  
Cristina Henriques ◽  
Patricia C. Melo ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
Urban Context ◽  
Global Event ◽  
Recovery Capacity ◽  
Location Patterns ◽  
Spatio Temporal ◽  
Coworking Spaces ◽  
The Impact ◽  
The City ◽  
Different Parts

As innovative and creative ecosystems, Coworking Spaces (CWS) show high adaptability and recovery capacity in facing global event disruptions. This article is an exploratory study that aims to approach the development of coworking spaces in the city of Lisbon. It investigates the location patterns and adaptation of such ecosystems in Lisbon, by mapping the phenomenon and examining its spatio-temporal dynamics that was influenced by the urbanisation phases of the city, as well as the development and planning policies designed over the years. Starting from a broader view of CWS location in the city, this article moves on to present two particular cases, implemented in a different time and socio-economic circumstances in different parts of the city: LxFactory and The Creative Hub. This study is part of a broader contribution to COST Action (CA)18214 "The geography of the new workspaces and the impact on the periphery".

scholarly journals The role of socioeconomic status, environment, and temperature in the spatio-temporal distribution of the first Chikungunya epidemic in the city of Rio de Janeiro, Brazil

2020 ◽  
Author(s):  
Laís Picinini Freitas ◽  
Alexandra M. Schmidt ◽  
William Cossich ◽  
Oswaldo Gonçalves Cruz ◽  
Marilia Sá Carvalho
Keyword(s):  
Rio De Janeiro ◽  
Temporal Dynamics ◽  
Spatial Models ◽  
Temporal Distribution ◽  
Green Area ◽  
Arboviral Diseases ◽  
Spatio Temporal ◽  
In The Beginning ◽  
The City

AbstractChikungunya is an Aedes-borne disease therefore its dynamics are impacted by the vector’s ecology. We analysed the spatio-temporal distribution of the first chikungunya epidemic in Rio de Janeiro, estimating the effect of the socioeconomic and environmental factors as proxies of mosquitoes abundance. We fitted spatial models using notified cases counts by neighbourhood and week. To estimate the instantaneous and the memory effect of the temperature we used a transfer function. There were 13627 chikungunya cases in the study period. The sociodevelopment index, especially in the beginning of the epidemic, was inversely associated with the risk of cases, whereas the green area proportion effect was null for most weeks. The temperature increased the risk of chikungunya in most areas and this effect propagated for longer where the epidemic was concentrated. Factors related to the Aedes mosquitoes contribute to understanding the spatio-temporal dynamics of urban arboviral diseases.

scholarly journals Dynamics of the energy seascape can explain intra-specific variations in sea-crossing behaviour of soaring birds

2020 ◽  
Vol 16 (1) ◽  
pp. 20190797 ◽  
Author(s):  
E. Nourani ◽  
W. M. G. Vansteelant ◽  
P. Byholm ◽  
K. Safi
Keyword(s):  
Temporal Dynamics ◽  
Low Cost ◽  
Available Energy ◽  
Ecological Barriers ◽  
Open Sea ◽  
Specific Variation ◽  
Soaring Birds ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
Soaring Flight

Thermal soaring birds extract energy from the atmosphere to achieve energetically low-cost movement. When encountering regions that are energetically costly to fly over, such as open seas, they should attempt to adjust the spatio-temporal pattern of their passage to maximize energy extraction from the atmosphere over these ecological barriers. We applied the concept of energy landscapes to investigate the spatio-temporal dynamics of energy availability over the open sea for soaring flight. We specifically investigated how the ‘energy seascape' may shape age-specific sea-crossing behaviour of European honey buzzards, Pernis apivorus , over the Mediterranean Sea in autumn. We found uplift potential over the sea to be the main determinant of sea-crossing distance, rather than wind conditions. Considering this variable as a proxy for available energy over the sea, we constructed the energy seascape for the autumn migration season using 40 years of temperature data. Our results indicate that early-migrating adult buzzards are likely to encounter adverse energy subsidence over the Mediterranean, whereas late-migrating juveniles face less adverse flight conditions, and even conditions conducive to soaring flight. Our study provides evidence that the dynamics of the energy landscape can explain intra-specific variation in migratory behaviour also at sea.

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