Temporal and spatial evaluation of long-term satellite-based precipitation products across the complex topographical and climatic gradients of Chile

2018 ◽  
Author(s):  
Mauricio Zambrano-Bigiarini
Keyword(s):  
Temporal And Spatial ◽  
Spatial Evaluation

scholarly journals Multiple Evidence for Climate Patterns Influencing Ecosystem Productivity across Spatial Gradients in the Venice Lagoon

2021 ◽  
Vol 9 (4) ◽  
pp. 363
Author(s):  
Camilla Bertolini ◽  
Edouard Royer ◽  
Roberto Pastres
Keyword(s):  
Time Series ◽  
Primary Productivity ◽  
Clustering Analysis ◽  
Venice Lagoon ◽  
Spatial Effects ◽  
Spatial Gradients ◽  
Climate Forecasting ◽  
Oxygen Production Rate ◽  
Temporal And Spatial

Effects of climatic changes in transitional ecosystems are often not linear, with some areas likely experiencing faster or more intense responses, which something important to consider in the perspective of climate forecasting. In this study of the Venice lagoon, time series of the past decade were used, and primary productivity was estimated from hourly oxygen data using a published model. Temporal and spatial patterns of water temperature, salinity and productivity time series were identified by applying clustering analysis. Phytoplankton and nutrient data from long-term surveys were correlated to primary productivity model outputs. pmax, the maximum oxygen production rate in a given day, was found to positively correlate with plankton variables measured in surveys. Clustering analysis showed the occurrence of summer heatwaves in 2008, 2013, 2015 and 2018 and three warm prolonged summers (2012, 2017, 2019) coincided with lower summer pmax values. Spatial effects in terms of temperature were found with segregation between confined and open areas, although the patterns varied from year to year. Production and respiration differences showed that the lagoon, despite seasonality, was overall heterotrophic, with internal water bodies having greater values of heterotrophy. Warm, dry years with high salinity had lower degrees of summer autotrophy.

scholarly journals Using spoor and prey counts to determine temporal and spatial variation in lion (Panthera leo) density

2014 ◽  
Vol 92 (2) ◽  
pp. 97-104 ◽  
Author(s):  
D. Bauer ◽  
M. Schiess-Meier ◽  
D.R. Mills ◽  
M. Gusset
Keyword(s):  
Spatial Variation ◽  
Disease Outbreaks ◽  
Panthera Leo ◽  
African Countries ◽  
Temporal And Spatial Variation ◽  
Term Survival ◽  
Population Crash ◽  
Grazing Area ◽  
Temporal And Spatial

In many African countries, large carnivores such as lions (Panthera leo (L., 1758)) are under serious threat through conflict with people, declining prey abundance, and exposure to disease. Spoor and prey count surveys were used to determine temporal and spatial variation in lion density in Khutse Game Reserve (KGR), Botswana, and the adjacent communal grazing area. Estimated lion density in KGR for the period September 2008 – June 2010 was 41% lower than for the period June 2007 – August 2008 (1.02 vs. 1.72 lions/100 km2). Prior to this population crash in mid-2008, estimated lion density in the communal grazing area (1.21 lions/100 km2) was 30% lower than inside KGR. The relative abundance of the three most abundant, preferred prey species of lions occurring in KGR decreased from 2001 to 2008 by 50%–79%. Based on two prey biomass estimates, the lion population in KGR was below the potential carrying capacity of the habitat after the crash in mid-2008. These results suggest that there could be a human-caused population sink around KGR, which might be strong enough to threaten the long-term survival of lions in the area; particularly if this edge effect is intensified by prey depletion and disease outbreaks, which might have caused the sudden decline in the lion population.

Precarious city: home-making and eviction in Buenos Aires, Argentina

2017 ◽  
Vol 25 (3) ◽  
pp. 411-424 ◽  
Author(s):  
Solange Muñoz
Keyword(s):  
Everyday Life ◽  
Buenos Aires ◽  
City Center ◽  
Place Making ◽  
Domestic Spaces ◽  
The Everyday ◽  
Temporal And Spatial ◽  
The City ◽  
Traditional Roles

This article expands on current conceptualizations and applications of precarity by exploring the everyday socio-spatial complexities of migrant squatters living in informal hotels in the center of Buenos Aires, Argentina. Through ethnographic methods, this research investigates squatters’ practices of negotiating access to shared domestic spaces and resources, while experiencing long-term waiting for eviction from their home and potentially from the city center. Employing a cultural geographies approach, this work is concerned with understanding the ways in which precarity is routinely experienced in the micro-spaces of everyday life. Precarity is examined in its temporal and spatial manifestations, with particular emphasis on gendered experiences and home-making practices. Moving through daily spaces and routine situations, I document how precarity is embedded in the mundane tasks of the domestic, and as a result, unevenly impacts women whose traditional roles as mothers and caretakers mean that they are often at the fore of place-making practices and responsibilities.

scholarly journals Long-term temporal and spatial trends in eutrophication status of the Baltic Sea

2015 ◽  
Vol 92 (1) ◽  
pp. 135-149 ◽  
Author(s):  
Jesper H. Andersen ◽  
Jacob Carstensen ◽  
Daniel J. Conley ◽  
Karsten Dromph ◽  
Vivi Fleming-Lehtinen ◽  
...  
Keyword(s):  
Baltic Sea ◽  
The Baltic Sea ◽  
Spatial Trends ◽  
Temporal And Spatial ◽  
The Baltic ◽  
Temporal And Spatial Trends

Long-term Temporal and Spatial Morphological Variability of a Nourished Beach Using the EOF Analysis

2020 ◽  
Vol 95 (sp1) ◽  
pp. 428
Author(s):  
Tae-Jin Choi ◽  
Jin-Yong Choi ◽  
Jun-Yong Park ◽  
Young-Jin Yang
Keyword(s):  
Morphological Variability ◽  
Eof Analysis ◽  
Temporal And Spatial

Introduction

2018 ◽  
pp. 1-14
Author(s):  
Elena A. Schneider
Keyword(s):  
Crucial Role ◽  
Slave Trade ◽  
African Descent ◽  
Event History ◽  
Major Event ◽  
Black Soldiers ◽  
History Of ◽  
Temporal And Spatial

The introduction sketches the contours of the British six-week invasion and eleven-month occupation of Havana in 1762–1763, a major event in the history of the Atlantic world. It describes the framework of the book, “an event history” that relies on multiple, overlapping temporal and spatial frames in order to tie together many different strands of history, historical actors, perspectives, and scales. In giving a long-term history of the causes, central dynamics, and enduring consequences of this event, the book focuses on the crucial role of the slave trade and people of African descent. The actions of people of African descent and imperial rivalry over the slave trade shaped both the invasion and occupation of Havana in ways yet to be fully understood. The rest of the book explores the painful irony that black soldiers’ brave service in Havana during the British siege helped lead to new Spanish policies that endorsed and expanded slavery and the slave trade.

scholarly journals Hydrodynamical Adaptive Mesh Refinement Simulations of Disk Galaxies

2008 ◽  
Vol 4 (S254) ◽  
pp. 445-452
Author(s):  
Brad K. Gibson ◽  
Stéphanie Courty ◽  
Patricia Sánchez-Blázquez ◽  
Romain Teyssier ◽  
Elisa L. House ◽  
...  
Keyword(s):  
Galaxy Formation ◽  
Adaptive Mesh Refinement ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
Disk Galaxies ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Temporal And Spatial ◽  
Compare And Contrast

AbstractTo date, fully cosmological hydrodynamic disk simulations to redshift zero have only been undertaken with particle-based codes, such as GADGET, Gasoline, or GCD+. In light of the (supposed) limitations of traditional implementations of smoothed particle hydrodynamics (SPH), or at the very least, their respective idiosyncrasies, it is important to explore complementary approaches to the SPH paradigm to galaxy formation. We present the first high-resolution cosmological disk simulations to redshift zero using an adaptive mesh refinement (AMR)-based hydrodynamical code, in this case, RAMSES. We analyse the temporal and spatial evolution of the simulated stellar disks' vertical heating, velocity ellipsoids, stellar populations, vertical and radial abundance gradients (gas and stars), assembly/infall histories, warps/lopsideness, disk edges/truncations (gas and stars), ISM physics implementations, and compare and contrast these properties with our sample of cosmological SPH disks, generated with GCD+. These preliminary results are the first in our long-term Galactic Archaeology Simulation program.

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