Apport des SIG à l'Étude de la Dynamique Spatio-Temporelle de l’Agrosystème d'Une Grande Exploitation Conduite en Milieu Semi-Aride (Tunisie) = Contribution of GIS in the Study of the Spatio-Temporal Dynamics of Agrosystem of a Large Farm in a Semi-Arid Environment (Tunisia)

2017 ◽  
Vol 7 (2) ◽  
pp. 58-71
Author(s):  
Faiza Khebour-Allouche ◽  
Romdhane Ahmed ◽  
Slim Slim
Keyword(s):  
Temporal Dynamics ◽  
Arid Environment ◽  
Large Farm ◽  
Spatio Temporal ◽  
Semi Arid

Spatio-temporal dynamics of land use changes of an intense anthropized basin in the Brazilian semi-arid region

2021 ◽  
pp. 100646
Author(s):  
Maria da Conceição de Sousa ◽  
Gustavo Vieira Veloso ◽  
Lucas Carvalho Gomes ◽  
Elpidio Inácio Fernandes-Filho ◽  
Teógenes Senna de Oliveira
Keyword(s):  
Land Use ◽  
Arid Region ◽  
Temporal Dynamics ◽  
Land Use Changes ◽  
Spatio Temporal ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Soil carbon dynamics during secondary succession in a semi-arid Mediterranean environment

2011 ◽  
Vol 8 (6) ◽  
pp. 11107-11138 ◽  
Author(s):  
A. Novara ◽  
L. Gristina ◽  
T. La Mantia ◽  
J. Rühl
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Plant Community ◽  
Temporal Dynamics ◽  
Soil Depth ◽  
Arid Environment ◽  
Plant Succession ◽  
Bulk Soil ◽  
Photosynthetic Pathway ◽  
Semi Arid

Abstract. Clarifying which factors cause an increase or decrease in soil organic carbon (SOC) after agricultural abandonment requires integration of data on the temporal dynamics of the plant community and SOC. A chronosequence of abandoned vineyards was studied on a volcanic island (Pantelleria, Italy). Vegetation in the abandoned fields was initially dominated by annual and perennial herbs, then by Hyparrhenia hirta (L.) Stapf, and finally by woody communities. As a consequence, the dominant photosynthetic pathway changed from C3 to C4 and then back to C3. Conversion of a plant community dominated by one photosynthetic pathway to another changes the 13C/12C ratio of inputs to soil organic carbon (SOC). Using the time since abandonment and the shift in belowground δ13C of SOC relative to the aboveground δ13C plant community, we estimated SOC turnover rate. SOC content (g kg−1) increased linearly (R2 = 0.79 and 0.73 for 0–15 and 15–30 cm soil depth) with the age of abandonment, increasing from 12 g kg−1 in cultivated vineyards to as high as 26 g kg−1 in the last stage of the succession. δ13C increased in the bulk soil and its three fractions during succession, but only for soil fractions the effects of soil depth and its interaction with succession age were significant. Polynomial curves described the change in δ13C over the chronosequence for both depths. δ13C in the bulk soil had increased from −28 to −24‰ by 30 yr after abandonment for both depths but then decreased to −26‰ at 60 yr after abandonment (corresponding with maturity of the woody plant community). Overall, the results indicate that abandoned vineyards on volcanic soil in a semi-arid environment are C sinks and that C storage in these soils is closely related to plant succession.

Proceedings of the Thirty-Fourth Meeting of the Israel Society of Ecology and Environmental Quality Sciences (Iseeqs)

2006 ◽  
Vol 52 (2) ◽  
pp. 159-204
Author(s):  
A. ARNON ◽  
E.D. UNGAR ◽  
T. SVORAY ◽  
A. PEREVOLOTSKY
Keyword(s):  
Environmental Quality ◽  
Temporal Dynamics ◽  
Arid Ecosystem ◽  
Herbaceous Vegetation ◽  
Israel Society ◽  
Spatio Temporal ◽  
Semi Arid

Spatio-temporal dynamics of the association between woody and herbaceous vegetation in a grazed, semi-arid ecosystem

scholarly journals Temporal dynamics of soil and vegetation spectral responses in a semi-arid environment

2002 ◽  
Vol 23 (19) ◽  
pp. 4073-4087 ◽  
Author(s):  
A. Karnieli ◽  
A. Gabai ◽  
C. Ichoku ◽  
E. Zaady ◽  
M. Shachak
Keyword(s):  
Temporal Dynamics ◽  
Arid Environment ◽  
Spectral Responses ◽  
Semi Arid

Spatio-temporal dynamics of chlorophyll fluorescence in a semi-arid Mediterranean shrubland

2004 ◽  
Vol 58 (3) ◽  
pp. 295-308 ◽  
Author(s):  
Juan Bellot ◽  
Fernando T. Maestre ◽  
Noelia Hernández
Keyword(s):  
Chlorophyll Fluorescence ◽  
Temporal Dynamics ◽  
Mediterranean Shrubland ◽  
Spatio Temporal ◽  
Semi Arid

Spatio-temporal dynamics of malaria expansion under climate change in semi-arid areas of Ethiopia

2019 ◽  
Vol 18 (5) ◽  
pp. 400-413
Author(s):  
Haftu Abrha ◽  
Haftom Hagos ◽  
Emiru Brhane ◽  
Meseret Hadgu ◽  
Girma Mamo
Keyword(s):  
Climate Change ◽  
Temporal Dynamics ◽  
Arid Areas ◽  
Spatio Temporal ◽  
Semi Arid

Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: implications for ecosystem-based fisheries management

2020 ◽  
Vol 637 ◽  
pp. 117-140 ◽  
Author(s):  
DW McGowan ◽  
ED Goldstein ◽  
ML Arimitsu ◽  
AL Deary ◽  
O Ormseth ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
Marine Ecosystem ◽  
Gulf Of Alaska ◽  
Data Series ◽  
Limited Information ◽  
Important Species ◽  
Multiple Data ◽  
Spatial And Temporal Dynamics ◽  
Spawning Areas ◽  
Spatio Temporal

Pacific capelin Mallotus catervarius are planktivorous small pelagic fish that serve an intermediate trophic role in marine food webs. Due to the lack of a directed fishery or monitoring of capelin in the Northeast Pacific, limited information is available on their distribution and abundance, and how spatio-temporal fluctuations in capelin density affect their availability as prey. To provide information on life history, spatial patterns, and population dynamics of capelin in the Gulf of Alaska (GOA), we modeled distributions of spawning habitat and larval dispersal, and synthesized spatially indexed data from multiple independent sources from 1996 to 2016. Potential capelin spawning areas were broadly distributed across the GOA. Models of larval drift show the GOA’s advective circulation patterns disperse capelin larvae over the continental shelf and upper slope, indicating potential connections between spawning areas and observed offshore distributions that are influenced by the location and timing of spawning. Spatial overlap in composite distributions of larval and age-1+ fish was used to identify core areas where capelin consistently occur and concentrate. Capelin primarily occupy shelf waters near the Kodiak Archipelago, and are patchily distributed across the GOA shelf and inshore waters. Interannual variations in abundance along with spatio-temporal differences in density indicate that the availability of capelin to predators and monitoring surveys is highly variable in the GOA. We demonstrate that the limitations of individual data series can be compensated for by integrating multiple data sources to monitor fluctuations in distributions and abundance trends of an ecologically important species across a large marine ecosystem.

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