Ambientes de ocorrência do porífero Oncosclera jewelli no Parque Estadual Do Tainhas, Planalto Meridional do RS: uma análise geomorfométrica

Tainhas State Park embraces locations of occurrence of freshwater sponge Oncosclera jewelli. Our objective is to indicate the areas of potential occurrence of the species from factors related to the geomorphometric signature of the occurance points along the Tainhas River in the Park and its buffer zone. Connections and data analysis were performed from the construction and manipulation of a geographic database, in SIGs SPRING-5.4.3 and QGIS-2.18, containing: a) MDEs from Topodata, Embrapa and Alos bases, obtained by remote orbitals sensors for the entire study area, and MDE obtained by drone-generated aerial images of the geomorphometric variables: slope, aspect and topographic position index; b) geological map of Rio Grande do Sul; c) land use and coverage map, based on images from the GeoEye satellite. The results demonstrated that the species occurs exclusively on the lithological unit of Serra Geral Formation. The plain is marked by terrain of low slope and south and east orientation and flattened plains. The Potential Occurrence Map of the species was generated, demonstrating that approximately 4.5% of the total length of watercourse stretches in the study area meet the analyzed geomorphometric conditions.

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ANÁLISE DE ELEMENTOS DO RELEVO ATRAVÉS DO TOPOGRAPHIC POSITION INDEX (TPI) DA BACIA HIDROGRÁFICA DO ARROIO PUITÃ – OESTE DO RIO GRANDE DO SUL/BRASIL

Geography Department University of Sao Paulo ◽

10.11606/rdg.v31i0.100267 ◽

2016 ◽

Vol 31 ◽

pp. 14 ◽

Cited By ~ 1

Author(s):

Romario Trentin ◽

Luis Eduardo De Souza Robaina ◽

Débora Da Silva Baratto

Keyword(s):

Rio Grande ◽

Shuttle Radar Topography Mission ◽

Rio Grande Do Sul ◽

Topographic Position ◽

Topographic Position Index ◽

Position Index

O presente trabalho teve como objetivo a determinação de classes do Topographic Position Index (TPI) na bacia hidrográfica do arroio Puitã. O arroio Puitã localiza-se no sul do Brasil, oeste do estado do Rio Grande do Sul. A base altimétrica para a definição do Topographic Position Index, foram os dados de radar do “Shuttle Radar Topography Mission” (SRTM). O TPI é a base do sistema de classificação e, é simplesmente a diferença entre um valor de elevação de células e a altitude média da vizinhança em torno dessas células. Valores positivos significam que a célula é mais elevada do que os seus arredores, enquanto valores negativos significa que é mais baixa. A escala utilizada para a definição das classes de TPI, foi de 10 pixeis, ou seja, foi utilizado um raio de 10 pixeis para a análise da vizinhança que compõem a média de altitude e estabelece o valor de TPI do pixel central. As classes de TPI determinadas foram assim denominadas: vales; áreas planas; encostas suaves; encostas onduladas; encostas íngremes e topo das encostas. A área de encostas suaves predomina na bacia com 38,06% da área total. As áreas de encostas onduladas e áreas planas são as segunda e terceira, em área, com 27,15% e 27,11%, respectivamente. A área de topo das encostas é a que ocupa a menor área, com apenas 0,44% da área total. A aplicação da metodologia de determinação do relevo através Topographic Position Index apresentou um resultado que responde bem as feições de relevo observadas em campo, o que o potencializa para a aplicação em outras áreas.

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Satellite–Derived Topography and Morphometry for VHR Coastal Habitat Mapping: The Pleiades–1 Tri–Stereo Enhancement

Remote Sensing ◽

10.3390/rs14010219 ◽

2022 ◽

Vol 14 (1) ◽

pp. 219

Author(s):

Dorothée James ◽

Antoine Collin ◽

Antoine Mury ◽

Rongjun Qin

Keyword(s):

Control Point ◽

Habitat Mapping ◽

Slope Aspect ◽

Coastal Habitat ◽

Topographic Position Index ◽

Landform Classification ◽

Surface Models ◽

Position Index ◽

The Impact

The evolution of the coastal fringe is closely linked to the impact of climate change, specifically increases in sea level and storm intensity. The anthropic pressure that is inflicted on these fragile environments strengthens the risk. Therefore, numerous research projects look into the possibility of monitoring and understanding the coastal environment in order to better identify its dynamics and adaptation to the major changes that are currently taking place in the landscape. This new study aims to improve the habitat mapping/classification at Very High Resolution (VHR) using Pleiades–1–derived topography, its morphometric by–products, and Pleiades–1–derived imageries. A tri–stereo dataset was acquired and processed by image pairing to obtain nine digital surface models (DSM) that were 0.50 m pixel size using the free software RSP (RPC Stereo Processor) and that were calibrated and validated with the 2018–LiDAR dataset that was available for the study area: the Emerald Coast in Brittany (France). Four morphometric predictors that were derived from the best of the nine generated DSMs were calculated via a freely available software (SAGA GIS): slope, aspect, topographic position index (TPI), and TPI–based landform classification (TPILC). A maximum likelihood classification of the area was calculated using nine classes: the salt marsh, dune, rock, urban, field, forest, beach, road, and seawater classes. With an RMSE of 4 m, the DSM#2–3_1 (from images #2 and #3 with one ground control point) outperformed the other DSMs. The classification results that were computed from the DSM#2–3_1 demonstrate the importance of the contribution of the morphometric predictors that were added to the reference Red–Green–Blue (RGB, 76.37% in overall accuracy, OA). The best combination of TPILC that was added to the RGB + DSM provided a gain of 13% in the OA, reaching 89.37%. These findings will help scientists and managers who are tasked with coastal risks at VHR.

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Zwischenevaluation des Wald-Wild-Management-Instruments (WWMI) im Pilotprogramm effor2 «Wald und Wild» | Preliminary evaluation of the Game-Forest-Management-Tool (GFMT) in the effor2 pilot programme «Game and Forest»

Schweizerische Zeitschrift fur Forstwesen ◽

10.3188/szf.2003.0305 ◽

2003 ◽

Vol 154 (8) ◽

pp. 305-313 ◽

Cited By ~ 1

Author(s):

Roman Eyholzer ◽

Martin Baumann ◽

Rolf Manser

Keyword(s):

Forest Management ◽

Management Practice ◽

Management Tool ◽

Preliminary Evaluation ◽

Optimal Contract ◽

Technical Tool ◽

Entire Study ◽

Pilot Programme ◽

Complex Problems ◽

Entire Study Area

Faced with the challenging task of balancing forest interests and wildlife, the Swiss Forest Agency initiated the pilot programme«Game and Forest», which is committed to a philosophy of goal-oriented management practice and a redesign of forestry subsidizing. Within this programme the diverse goals of forestry and hunting have been amalgamated to a superimposed goal and set out in a corresponding contract. The Game-Forest-Management-Tool (GFMT) has been divised to simulate the effect of various strategies to deal with the complex problems of forest-wildlife. Optimal contract-fulfilling procedures can be simulated on a PC using this technical tool. The efficiency of the measures suggested by simulations that were carried out are being tested in a study area within the pilot programme, «Game and Forest». Half way through this trial, after two years, we can say that there has been no significant increase of non-browsed areas. In 2004, after the collection of data for the entire study area, we will be able to tell whether applying this computer simulated strategy truly leads to an augmentation of non-browsed area and a decrease in bark-peeled forests in the pilot area.

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Night-Time Light Remote Sensing Mapping: Construction and Analysis of Ethnic Minority Development Index

Remote Sensing ◽

10.3390/rs13112129 ◽

2021 ◽

Vol 13 (11) ◽

pp. 2129

Author(s):

Fei Zhao ◽

Lu Song ◽

Zhiyan Peng ◽

Jianqin Yang ◽

Guize Luan ◽

...

Keyword(s):

Remote Sensing ◽

Ethnic Group ◽

Ethnic Groups ◽

Ethnic Minorities ◽

Population Data ◽

Night Time ◽

Entire Study ◽

Development Index ◽

Remote Sensing Mapping ◽

Entire Study Area

Using toponym data, population data, and night-time light data, we visualized the development index of the Yi, Wa, Zhuang, Naxi, Hani, and Dai ethnic groups on ArcGIS as well as the distribution of 25 ethnic minorities in the study area. First, we extracted the toponym data of 25 ethnic minorities in the study area, combined with night-time light data and the population proportion data of each ethnic group, then we obtained the development index of each ethnic group in the study area. We compared the development indexes of the Yi, Wa, Zhuang, Naxi, Hani, and Dai ethnic groups with higher development indexes. The results show that the Yi nationality’s development index was the highest, reaching 28.86 (with two decimal places), and the Dai nationality’s development index was the lowest (15.22). The areas with the highest minority development index were concentrated in the core area of the minority development, and the size varied with the minority’s distance. According to the distribution of ethnic minorities, we found that the Yi ethnic group was distributed in almost the entire study area, while other ethnic minorities had obvious geographical distribution characteristics, and there were multiple ethnic minorities living together. This research is of great significance to the cultural protection of ethnic minorities, the development of ethnic minorities, and the remote sensing mapping of lights at night.

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Monitoring and simulating the distribution of phytoplankton in constructed wetlands based on SPOT 6 images

Open Geosciences ◽

10.1515/geo-2020-0243 ◽

2021 ◽

Vol 13 (1) ◽

pp. 454-468

Author(s):

Yumeng Song ◽

Jing Zhang

Keyword(s):

Water Quality ◽

Water Quality Model ◽

Quality Model ◽

Band Ratio ◽

Entire Study ◽

Chl A ◽

Analytical Tools ◽

Best Fit ◽

Entire Study Area ◽

Range Of Values

Abstract We integrated hyperspectral and field-measured chlorophyll-a (Chl-a) data from the Kristalbad constructed wetland in the Netherlands. We developed a best-fit band ratio empirical algorithm to generate a distribution map of Chl-a concentration (C chla) from SPOT 6 imagery. The C chla retrieved from remote sensing was compared with a water quality model established for a wetland pond system. The retrieved satellite results were combined with a water quality model to simulate and predict the changes in phytoplankton levels. The regression model provides good retrievals for Chl-a. The imagery-derived C chla performed well in calibrating the simulation results. For each pond, the modeled C chla showed a range of values similar to the Chl-a data derived from SPOT 6 imagery (10–25 mg m−3). The imagery-derived and prediction model results could be used as the guiding analytical tools to provide information covering an entire study area and to inform policies.

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PREDATION BY CALOSOMA SYCOPHANTA L. (COLEOPTERA: CARABIDAE): EVIDENCE FOR A LARGE IMPACT ON GYPSY MOTH, LYMANTRIA DISPAR L. (LEPIDOPTERA: LYMANTRIIDAE), PUPAE

The Canadian Entomologist ◽

10.4039/ent1171117-9 ◽

1985 ◽

Vol 117 (9) ◽

pp. 1117-1126 ◽

Cited By ~ 22

Author(s):

Ronald M. Weseloh

Keyword(s):

Gypsy Moth ◽

Lymantria Dispar ◽

Ground Level ◽

Mortality Factor ◽

Substantial Impact ◽

Entire Study ◽

Dispersal Potential ◽

Capture Recapture ◽

The Impact ◽

Entire Study Area

AbstractThe impact of predation by Calosoma sycophanta L. on an increasing prey population was assessed by recapturing marked adult beetles, periodically observing tagged gypsy moth pupae, and examining gypsy moth pupal remains in different microhabitats. Adult beetles dispersed in random directions but many tended to remain near the trap at which they were originally caught, suggesting a low dispersal potential. About 75% of the adult beetles present in the plot on one day were still present the next day. Capture–recapture estimates suggested that there were at most about 250 male beetles and half as many females/ha in the plot. Calosoma larvae destroyed 70% of tagged gypsy moth pupae under burlap bands on tree trunks near ground level, which was much more than any other mortality factor. Although this percentage was the same when mortality was assessed by looking at pupal remains within 5 m of the ground on tree trunks, pupae higher in trees and on leaves were not attacked as frequently. On average, about 40% of the pupae present in the entire study area were destroyed by Calosoma larvae. Each female beetle in the site would have had to produce about 30 progeny to have this effect. These data suggest that a relatively low number of adult beetles can have a substantial impact on gypsy moth populations.

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DETERMINATION AND MAPPING OF THE TERRESTRIAL GRAVITY ANOMALIES IN THE MOUNTAINOUS AREAS OF IRAQ

Journal of Information System and Technology Management ◽

10.35631/jistm.624021 ◽

2021 ◽

Vol 6 (24) ◽

pp. 213-225

Author(s):

Shazad Jamal Jalal ◽

Tajul Ariffin Musa ◽

Ami Hassan Md Din ◽

Wan Anom Wan Aris

Keyword(s):

Gravity Data ◽

Physical Geodesy ◽

Gravity Anomalies ◽

Gravity Survey ◽

Mountainous Areas ◽

Entire Study ◽

Terrestrial Gravity ◽

The Past ◽

Regional Gravity ◽

Entire Study Area

Gravity data and computing gravity anomalies are regarded as vital for both geophysics and physical geodesy fields. The mountainous areas of Iraq are characterized by the lack of regional gravity data because gravity surveys are rarely performed in the past four decades due to the Iraq-Iran war and the internal unstable political situation of this particular region. In addition, the formal map of the available terrestrial gravity which was published by the French Database of Bureau Gravimetrique International (International Gravimetric Bureau-in English) (BGI), introduces Iraq and the study area as a remote area and in white color because of the unavailability of gravity data. However, a dense and local (not regional) gravity data is available which was conducted by geophysics researchers 13 years ago. Therefore, the regional gravity survey of 160 gravity points was performed by the authors at an average 11 km apart, which was covers the whole area of Sulaymaniyah Governorate (part of the mountainous areas of Iraq). In spite of Although the risk of mine fields within the study area, suitable safe routes as well as a helicopter was used for the gravity survey of several points on the top of mountains. The survey was conducted via Lacoste and Romberg geodetic gravimeter and GPS handheld. The objective of the study is to determine and map the gravity anomalies for the entire study area, the data of which would assist different geosciences applications.

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GIS based Soil Nutrient Assessment of Available Macro and Micronutrients in Tommaladahalli Microwatershed of Chikkamagaluru District, Karnataka, India

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2021.1009.059 ◽

2021 ◽

Vol 10 (9) ◽

pp. 510-517

Author(s):

S. Anitha ◽

K. T. Gurumurthy Ganapathi

Keyword(s):

Interpolation Method ◽

Soil Nutrient ◽

Nutrient Status ◽

Nitrogen And Phosphorus ◽

Available Nitrogen ◽

Entire Study ◽

Available N ◽

Standard Procedures ◽

Entire Study Area ◽

Available Nutrient Status

An investigation was undertaken in Tommaladahalli (566.13 ha) micro-watershed of Tarikere taluk, Chikkamagaluru district of Karnataka to assess available nutrient status in the surface soils. About 118 surface soil samples were collected grid wise by using cadastral map at 250 m grid interval and were analyzed for their fertility status using standard procedures. Soil fertility maps were prepared by means of interpolation method called Krigging. The results revealed that the pH, electrical conductivity, and organic carbon were ranged from 5.37 to 9.06, 0.065 to 0.466 dS m-1 and 0.33 to 1.62 per cent respectively. The available N, P2O5, K2O were ranged from 175.6 to 545.6 kg ha-1, 11.8 to 61.1 kg ha-1 and 122.7 to 491.4 kg ha-1, respectively. The available nitrogen and phosphorus were low to medium, where as potassium content was medium to high in the entire study area. Micronutrients viz. zinc, iron and boron were sufficient and were ranged from 0.34 to 1.17 mg kg-1, 2.03 to 21.86 mg kg-1 and 0.30 to 0.89 mg kg-1 respectively.

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