The role of algal blooms and community respiration in controlling the temporal and spatial dynamics of hypoxia and acidification in eutrophic estuaries

Mountains have distinct geography and are dynamic in nature compared to the plains. 'Verticality' and 'variation' are two fundamental specificities of the mountain geography. They possess distinct temporal and spatial characteristics in a unique socio-cultural setting. There is an ever increasing need for spatial and temporal data for planning and management activities; and Geo Information (GI) Science (including Geographic Information and Earth Observation Systems). This is being recognized more and more as a common platform for integrating spatial data with social, economic and environmental data and information from different sources. This paper investigates the applicability and challenges of GISscience in the context of mountain geography with ample evidences and observations from the mountain specific publications, empirical research findings and reports. The contextual explanation of mountain geography, mountain specific problems, scientific concerns about the mountain geography, advances in GIScience, the role of GIScience for sustainable development, challenges on application of GIScience in the contexts of mountains are the points of discussion. Finally, conclusion has been made with some specific action oriented recommendations.

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Temporal and Spatial Dynamics of DNA Topoisomerase I in Prostate Cancer

10.21236/ada433934 ◽

2005 ◽

Author(s):

Randy M. Wadkins

Keyword(s):

Prostate Cancer ◽

Topoisomerase I ◽

Spatial Dynamics ◽

Dna Topoisomerase I ◽

Dna Topoisomerase ◽

Temporal And Spatial

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Large-Scale Analysis of the Spatiotemporal Changes of Net Ecosystem Production in Hindu Kush Himalayan Region

Remote Sensing ◽

10.3390/rs13061180 ◽

2021 ◽

Vol 13 (6) ◽

pp. 1180

Author(s):

Da Guo ◽

Xiaoning Song ◽

Ronghai Hu ◽

Xinming Zhu ◽

Yazhen Jiang ◽

...

Keyword(s):

Large Scale ◽

Net Primary Production ◽

Carbon Sink ◽

Carbon Sources ◽

Spatial Dynamics ◽

Tibet Plateau ◽

Geostatistical Model ◽

Hindu Kush ◽

Temporal And Spatial ◽

The Difference

The Hindu Kush Himalayan (HKH) region is one of the most ecologically vulnerable regions in the world. Several studies have been conducted on the dynamic changes of grassland in the HKH region, but few have considered grassland net ecosystem productivity (NEP). In this study, we quantitatively analyzed the temporal and spatial changes of NEP magnitude and the influence of climate factors on the HKH region from 2001 to 2018. The NEP magnitude was obtained by calculating the difference between the net primary production (NPP) estimated by the Carnegie–Ames Stanford Approach (CASA) model and the heterotrophic respiration (Rh) estimated by the geostatistical model. The results showed that the grassland ecosystem in the HKH region exhibited weak net carbon uptake with NEP values of 42.03 gC∙m−2∙yr−1, and the total net carbon sequestration was 0.077 Pg C. The distribution of NEP gradually increased from west to east, and in the Qinghai–Tibet Plateau, it gradually increased from northwest to southeast. The grassland carbon sources and sinks differed at different altitudes. The grassland was a carbon sink at 3000–5000 m, while grasslands below 3000 m and above 5000 m were carbon sources. Grassland NEP exhibited the strongest correlation with precipitation, and it had a lagging effect on precipitation. The correlation between NEP and the precipitation of the previous year was stronger than that of the current year. NEP was negatively correlated with temperature but not with solar radiation. The study of the temporal and spatial dynamics of NEP in the HKH region can provide a theoretical basis to help herders balance grazing and forage.

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Temporal and spatial dynamics of arthropod groups in terrestrial subsurface habitats in central Portugal

Zoology ◽

10.1016/j.zool.2021.125931 ◽

2021 ◽

pp. 125931

Author(s):

R.P. Eusébio ◽

H. Enghoff ◽

A. Solodovnikov ◽

A. Michelsen ◽

P. Barranco ◽

...

Keyword(s):

Spatial Dynamics ◽

Central Portugal ◽

Temporal And Spatial ◽

Terrestrial Subsurface

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Temporal and spatial dynamics of watermelon gummy stem blight epidemics

European Journal of Plant Pathology ◽

10.1007/s10658-010-9674-1 ◽

2010 ◽

Vol 128 (4) ◽

pp. 473-482 ◽

Cited By ~ 5

Author(s):

Adalberto C. Café-Filho ◽

Gil R. Santos ◽

Francisco F. Laranjeira

Keyword(s):

Spatial Dynamics ◽

Stem Blight ◽

Gummy Stem Blight ◽

Temporal And Spatial

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Temporal and spatial dynamics of a laser-produced plasma through a multiple Langmuir probe detector

10.1117/12.2046378 ◽

2014 ◽

Cited By ~ 1

Author(s):

Nadia Gambino ◽

Markus Brandstätter ◽

Bob Rollinger ◽

Reza S. Abhari

Keyword(s):

Langmuir Probe ◽

Spatial Dynamics ◽

Laser Produced Plasma ◽

Temporal And Spatial

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Autonomous and non-autonomous differentiation of ectoderm in different sea urchin species

Development ◽

10.1242/dev.121.5.1497 ◽

1995 ◽

Vol 121 (5) ◽

pp. 1497-1505 ◽

Cited By ~ 7

Author(s):

A.H. Wikramanayake ◽

B.P. Brandhorst ◽

W.H. Klein

Keyword(s):

Sea Urchin ◽

Strongylocentrotus Purpuratus ◽

Protein A ◽

Cellular Interactions ◽

V Protein ◽

Lytechinus Pictus ◽

Sea Urchin Embryo ◽

Oral Ectoderm ◽

Temporal And Spatial

During early embryogenesis, the highly regulative sea urchin embryo relies extensively on cell-cell interactions for cellular specification. Here, the role of cellular interactions in the temporal and spatial expression of markers for oral and aboral ectoderm in Strongylocentrotus purpuratus and Lytechinus pictus was investigated. When pairs of mesomeres or animal caps, which are fated to give rise to ectoderm, were isolated and cultured they developed into ciliated embryoids that were morphologically polarized. In animal explants from S. purpuratus, the aboral ectoderm-specific Spec1 gene was activated at the same time as in control embryos and at relatively high levels. The Spec1 protein was restricted to the squamous epithelial cells in the embryoids suggesting that an oral-aboral axis formed and aboral ectoderm differentiation occurred correctly. However, the Ecto V protein, a marker for oral ectoderm differentiation, was detected throughout the embryoid and no stomodeum or ciliary band formed. These results indicated that animal explants from S. purpuratus were autonomous in their ability to form an oral-aboral axis and to differentiate aboral ectoderm, but other aspects of ectoderm differentiation require interaction with vegetal blastomeres. In contrast to S. purpuratus, aboral ectoderm-specific genes were not expressed in animal explants from L. pictus even though the resulting embryoids were morphologically very similar to those of S. purpuratus. Recombination of the explants with vegetal blastomeres or exposure to the vegetalizing agent LiCl restored activity of aboral ectoderm-specific genes, suggesting the requirement of a vegetal induction for differentiation of aboral ectoderm cells.(ABSTRACT TRUNCATED AT 250 WORDS)

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