Management zone delineation and spatial distribution of micronutrients in cold-arid region of India

2021 ◽  
Vol 193 (7) ◽  
Author(s):  
Shazia Ramzan ◽  
Shaista Nazir ◽  
Ifra Ashraf ◽  
Mushtaq A. Wani ◽  
Zahid M. Wani ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Arid Region ◽  
Management Zone

scholarly journals Ocorrência de Galhas em Espécies de Croton do Parque Nacional Vale do Catimbau (PE) (Occurrence of Galls on Species of Croton Catimbau Valley Nacional Park (PE))

2011 ◽  
Vol 4 (3) ◽  
pp. 510 ◽  
Author(s):  
Maíra Honorato de Moura Silva ◽  
Luiz Oliveira da Costa Filho ◽  
Antônio Fernando Morais Oliveira ◽  
Jarcilene S. Almeida-Cortez
Keyword(s):  
Spatial Distribution ◽  
Arid Region ◽  
Population Abundance ◽  
Environmental Perturbations ◽  
Stem Gall ◽  
Loss Of Diversity ◽  
Ecological Importance ◽  
Semi Arid Region ◽  
Excellent Tool ◽  
Semi Arid

Insetos que induzem galhas podem constituir excelente ferramenta para estudos ambientais por serem sésseis, de fácil localização, abundantes e hospedeiro-específicos. Como bioindicadores respondem às perturbações ambientais mostrando perda de diversidade e alterações nas abundâncias populacionais tanto das espécies galhadoras como dos parasitoides. A importância ecológica das galhas despertou o interesse em descrever a morfologia e o padrão de distribuição espacial de galhas em três espécies de Croton (Croton adamantinus, C. argyrophyllus, C. grewioides) de região semi-árida. Para isso, foram levadas ao laboratório ramos de 10 indivíduos de cada espécie pra serem realizadas análise. Foram observadas, nas três espécies, galhas tanto foliares quanto caulinares com exceção de C. grewioides que só apresentou galhas foliares. A galha foliar do C. adamantinus apresentou coloração verde, pilosa, globóide, a galha caulinar mostrou-se de coloração marrom, glabra e ovóide. As galhas do C. argyrophyllus, tanto foliar quanto caulinar, apresentaram coloração amarelada, pilosa e globóide. Galhas em C. grewioides mostraram-se amareladas, pilosas, cilíndricas. As galhas de C. argyrophyllus estiveram presentes preferencialmente na face abaxial, região basal e borda da folha. Já as galhas em C. grewioides ocorreram em pequenas quantidades na face abaxial. Palavras-chave: Caatinga, Euphorbiaceae, Herbivoria.   Occurrence of Galls on Species of Croton Catimbau Valley Nacional Park (PE)   ABSTRACT Insects that induce galls can be an excellent tool for environmental studies because they are sessile, easy location, abundant and host-specific. As bioindicators respond to environmental perturbations showing loss of diversity and changes in population abundance of both species of parasitoids as galling. The ecological importance of galls sparked interest in describing morphology and pattern of spatial distribution of galls on three species of Croton (Croton adamantinus, C. argyrophyllus, C. grewioides) of semi-arid region. For this, they were taken to the laboratory branches 10 individuals of each species to be carried out analysis. Were observed in all three species, both leaf and stem galls with exception of C. grewioides only had leaf galls. The leaf gall of C. adamantinus presented color green, hairy, globose, stem gall proved to be brown, ovoid and glabrous. The galls of C. argyrophyllus both leaf and stem showed yellowish, globose and hairy. Galls in C. grewioides proved to be yellowish, hairy, cylindrical. The galls of C. argyrophyllus were present preferentially on abaxial, basal and edge of sheet. Since the galls in C. grewioides occurred in small quantities on abaxial surface.Keywords: Caatinga, Euphorbiaceae, Herbivonia.

Pedogenesis and spatial distribution of soil magnetic properties along a lithotoposequence in an arid region of Southern Iran

CATENA ◽  
2021 ◽  
Vol 198 ◽  
pp. 104979
Author(s):  
Zahra Moghbeli ◽  
Hamidreza Owliaie ◽  
Ebrahim Adhami ◽  
Mahdi Najafi-Ghiri ◽  
Saleh Sanjari
Keyword(s):  
Magnetic Properties ◽  
Spatial Distribution ◽  
Arid Region ◽  
Southern Iran

scholarly journals Spatial distribution of soil carbon stocks in a semi-arid region of India

2018 ◽  
Vol 15 ◽  
pp. e00192 ◽  
Author(s):  
Tarik Mitran ◽  
Umakant Mishra ◽  
Rattan Lal ◽  
T. Ravisankar ◽  
K. Sreenivas
Keyword(s):  
Spatial Distribution ◽  
Soil Carbon ◽  
Arid Region ◽  
Carbon Stocks ◽  
Soil Carbon Stocks ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals STATISTICAL ANALYSIS OF THE SPATIAL RELASHIONSHIP OF CAATINGA AND PHYSIOGRAPHIC FACTORS THROUGH REMOTE DATA

FLORESTA ◽  
2019 ◽  
Vol 49 (4) ◽  
pp. 755
Author(s):  
Janisson Batista de Jesus ◽  
Mariana Mizutani Ribeiro ◽  
Tatiana Mora Kuplich ◽  
Bruno Barros de Souza ◽  
Dráuzio Correia Gama
Keyword(s):  
Spatial Distribution ◽  
Statistical Analysis ◽  
Arid Region ◽  
Factors Associated ◽  
Independent Variables ◽  
Caatinga Vegetation ◽  
Semi Arid Region ◽  
Relationship Of ◽  
The Relationship ◽  
Semi Arid

The caatinga is characteristic of the semi-arid region of Brazil, of significant coverage in the northeast of the country and, therefore, geoprocessing and statistical techniques can be important tools to analyze the environmental factors associated with its distribution. The present study had the objective of analyzing the relationship of: altimetry, slope, soil type and river proximity in the spatial distribution of the caatinga vegetation, using a database generated by geoprocessing techniques. NDVI was used, and statistical analysis was based on multiple regression and Pearson's correlation. The results show that the weather station is the only variable that presented a high determination coefficient with the caatinga vegetation (R2 = 0.956), while the other independent variables have weak or nonexistent correlation. With the techniques of geoprocessing was allowed to observe that the Caatinga has a generalist spatial distribution of occurrence, not having a defined pattern.

Fine-scale spatial distribution ofmurundusstructures in the semi-arid region of Brazil

2017 ◽  
Vol 43 (3) ◽  
pp. 268-279 ◽  
Author(s):  
Henrique J. De Souza ◽  
Jacques H. C. Delabie
Keyword(s):  
Spatial Distribution ◽  
Arid Region ◽  
Fine Scale ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Spatial–Temporal Distribution of Tropospheric Specific Humidity in the Arid Region of Northwest China

Atmosphere ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 349
Author(s):  
Hao Zhang ◽  
Meiping Sun ◽  
Xiaojun Yao ◽  
Zhilan Wang ◽  
Lei Zhang
Keyword(s):  
Spatial Distribution ◽  
Arid Region ◽  
Temporal Distribution ◽  
Northwest China ◽  
Atmospheric Temperature ◽  
Reanalysis Data ◽  
Dew Point ◽  
Specific Humidity ◽  
Positive Trend ◽  
Weather Forecasts

Based on the atmospheric temperature and dew point temperature difference series of mandatory levels in the arid region of northwest China, we calculated the specific humidity of stations at 200, 300, 400, 500, 700, and 850 hPa and analyzed the spatial and temporal distribution. The specific humidity of radiosonde is compared with two sets of reanalysis data (ERA-interim from European Centre for Medium Range Weather Forecasts and Modern Era Retrospective Analysis for Research and Applications: MERRA-2). The annual specific humidity and summer specific humidity show a positive trend in the vertical atmospheric levels during the period 1958–2018. Taking the middle of the 1980s and 2002 as boundaries, the selected levels show the trend of “declining-gentle rising-fluctuation rising”. The maximum specific humidity is observed at the level of 850–700 hPa during the warm months of the year, and the most vertical expansion in specific humidity is in July. In terms of spatial distribution, the specific humidity is greatly influenced by the topography and underlying surface at lower levels. The characteristics of spatial distribution of the trend are well described by the two sets of reanalysis data in the middle and upper levels, but there are some deficiencies in depicting the trend in the lower levels.

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