scholarly journals Contribution to the Study of Diversity, Distribution, and Abundance of Insect Fauna in Salt Wetlands of Setif Region, Algeria

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Djamila Mouhoubi ◽  
Rédha Djenidi ◽  
Mustapha Bounechada
Keyword(s):  
Environmental Factors ◽  
Soil Salinity ◽  
Significant Relationship ◽  
Analytical Methods ◽  
Insect Fauna ◽  
Saline Wetlands ◽  
Ecological Parameters ◽  
Number Of Individuals ◽  
Northeastern Algeria

The present study aims to assess entomofauna biodiversity at three saline wetlands, located in Setif region, Northeastern Algeria. To determine the predominant environmental factors in the distribution of entomofauna, six different stations and three transects in each station were chosen according to the distribution of plant and soil salinity in each transect. Results were analysed, and different ecological indexes and analytical methods were applied, from 2016 to 2017. The total of individual insects belonging to 9 orders, 71 families, and 131 species were collected from the three sites. The highest abundance was in Coleoptera (38.17%) while the lowest abundance was found in Ephemeroptera (1.53%). The highest number of individuals (11438) was found in Bazer site in 2016, while the lowest number of individuals (4921) was in site Chott Frain in 2017. The highest abundance of insects (109) was recorded in transect BS1T16, and the lowest abundance of species was recorded in transect HS1T36. Diversity and equitability indices showed highest values in HS1T16 (H = 4,356) and HS1T37 (E = 0.7282). Some ecological parameters showed a significant relationship between the insects occurrence, distribution of plants, and type of soil.

scholarly journals Studi Populasi Serangga Sebagai Upaya Konservasi Biodiversitas Sungai Oyo, di Desa Wisata Bleberan Gunung Kidul

2015 ◽  
Vol 4 (4) ◽  
pp. 233
Author(s):  
Eka Sulistiyowati
Keyword(s):  
Environmental Factors ◽  
Diversity Index ◽  
The Other ◽  
Other Hand ◽  
Ecological Parameters ◽  
Number Of Individuals

Bleberan Village has ecotourism potential in terms of insects biodiversity. Moreover, this village has some beautiful tourism objects, such as Sri Gethuk waterfall and Rancang Kencono cave. In the other hand, biodiversity in this village is yet to be explored, hence this research aims at studying insects biodiversity, especially of  three orders: Orthoptera, Lepidoptera and Odonata. The final objective of this reseach is to provide information for studying and conserving biodiversity in this ecotourism region. The observation was conducted in 10 stations in both Kedung Poh (1st location) and Oyo River (2nd location ). Several ecological parameters were calculated such as density, diversity index, and distribution. In addition, enviromental parameters were also measured, i.e temperature, humidity, and light intesity. This research found 17 species of each order, with the highest number of individuals was observed in the member of Orthoptera, especially withPhlaeoba fumosa; 381 individuals (1st location 1) and  445 individuals (2nd location). In the order of Lepidoptera, species Catopsilia pomonahad the highest number of individuals, there were 31 and 46  individuals in 1st location and 2nd location, respectively. The latter is Odonata, had Orthetrum sabinawhich dominated the number with 252 individuals in 1st location and 188 individuals in 2nd location. This research also revealed that diversity index was varied between 0.79 and 0.99, with all orders were distributed in a clumped pattern. All the environmental factors had been observed and did not show any abnormality, therefore insects couldbe alive normally.

Species Responses to Grazing and Environmental-Factors in an Arid Halophytic Shrubland Community

1987 ◽  
Vol 35 (2) ◽  
pp. 135 ◽  
Author(s):  
RB Hacker
Keyword(s):  
Environmental Factors ◽  
Soil Salinity ◽  
Large Scale ◽  
Chemical Properties ◽  
Grazing Pressure ◽  
Aerial Photographs ◽  
Small Scale ◽  
Factors Affecting ◽  
Species Responses

Species responses to grazing and environmental factors were studied in an arid halophytic shrubland community in Western Australia. The grazing responses of major shrub species were defined by using reciprocal averaging ordination of botanical data, interpreted in conjunction with a similar ordination of soil chemical properties and measures of soil erosion derived from large-scale aerial photographs. An apparent small-scale interaction between grazing and soil salinity was also defined. Long-term grazing pressure is apparently reduced on localised areas of high salinity. Environmental factors affecting species distribution are complex and appear to include soil salinity, soil cationic balance, geomorphological variation and the influence of cryptogamic crusts on seedling establishment.

scholarly journals Fish species diversity in headwaters streams of Paraguay and Paraná Basins

2007 ◽  
Vol 50 (6) ◽  
pp. 1033-1042 ◽  
Author(s):  
Yzel Rondon Súarez ◽  
Sabrina Bigatão Valério ◽  
Karina Keyla Tondado ◽  
Alexandro Cezar Florentino ◽  
Thiago Rota Alves Felipe ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Environmental Factors ◽  
Fish Species ◽  
Total Species Richness ◽  
Paraná Basin ◽  
Parana Basin ◽  
Number Of Individuals ◽  
Total Species ◽  
Fish Species Diversity

The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.

Is the rate of Embryonic development a predictor of overall development rate in Tanytarsus barbitarsis Freeman (Diptera: Chironomidae)?

1990 ◽  
Vol 41 (5) ◽  
pp. 575 ◽  
Author(s):  
MJ Kokkinn
Keyword(s):  
Environmental Factors ◽  
Embryonic Development ◽  
Significant Relationship ◽  
Generation Time ◽  
South Australia ◽  
Additional Term ◽  
Development Rate ◽  
Time Data ◽  
Egg Hatching ◽  
Mathematical Relationships

Mathematical relationships describing the effect of water temperature on embryonic development and generation time for Tanytarsus barbitarsis, a nuisance chironomid from salt lakes near Port Augusta, South Australia, were compared. The aim of the comparison was to determine whether the relation- ship describing egg hatching could be extrapolated to determine the overall development rate of the species. Results indicated that the power function that closely described embryonic development, D(t) = 8712.32t-2.70, could not be fitted to the generation-time data. However, when an additional term, water salinity, was included, a highly significant relationship was derived: D(s,t)*=S4.0308t-4.471. This suggested that laboratory egg-hatching experiments could not account for the attenuating effect of environmental factors on overall development rates in the field.

scholarly journals Environmental factors of spatial distribution of soil salinity on flat irrigated terrain

Geoderma ◽  
2011 ◽  
Vol 163 (1-2) ◽  
pp. 55-62 ◽  
Author(s):  
A. Akramkhanov ◽  
C. Martius ◽  
S.J. Park ◽  
J.M.H. Hendrickx
Keyword(s):  
Spatial Distribution ◽  
Environmental Factors ◽  
Soil Salinity

scholarly journals THE CORRELATION BETWEEN HOUSING SANITATION AND EXISTENCE OF VECTORS IN KENDARI SUB DISTRICTS, INDONESIA

2019 ◽  
Vol 5 (2) ◽  
pp. 48-53
Author(s):  
Zuing Putra Arisanto ◽  
Ramadhan Tosepu ◽  
Sitti Rabbani Karimuna ◽  
Asnia Zainuddin ◽  
Yasnani Yasnani ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Significant Relationship ◽  
Learning Experience ◽  
Infectious Agent ◽  
Chi Square ◽  
Cross Sectional ◽  
Physical Conditions ◽  
Department Of Health ◽  
Infection Source ◽  
The Relationship

Background: Sanitation is an effort to prevent disease by removing or regulating environmental factors related to the chain of disease transfer. Vector is an Arthropod that can cause and transmit an Infectious agent from an Infection source to vulnerable landlords.Objective: To find out the relationship between housing sanitation and the presence of vectors in densely populated neighborhoods in the Kendari sub-district of Kendari city in 2019.Methods: This was a descriptive quantitative study with a cross-sectional approach. The study was conducted between 3 April 2019 and 3 May 2019. Data were collected using Field Learning Experience Report, and analyzed using Chi-Square test.Results: Findings indicated that there was a statistically significant relationship between housing sanitation and the existence of vectors (p=.05).Conclusion:  There was a significant relationship between the physical conditions of the house, the environment with the presence of vectors in the densely populated environment of the population of Kendari District. It is suggested for the community to improve the condition of the house to meet health requirements. The Department of Health of Kendari should continuously conduct environment and housing sanitation programs.

scholarly journals Hubungan Faktor Lingkungan dengan Kejadian Diare Balita di Wilayah Kerja Puskesmas Kambang Kecamatan Lengayang Kabupaten Pesisir Selatan Tahun 2013

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Fitra Dini ◽  
Rizanda Machmud ◽  
Roslaili Rasyid
Keyword(s):  
Waste Water ◽  
Drinking Water ◽  
Environmental Factors ◽  
Significant Relationship ◽  
Random Sampling ◽  
Drainage System ◽  
Water Drainage ◽  
Cross Sectional ◽  
Children Under Five ◽  
Under Five

AbstrakPuskesmas Kambang adalah kejadian diare terbanyak di Pesisir Selatan yang menjadi insiden tertinggi di Sumatera Barat tahun 2012 dengan kondisi sanitasi yang sehat kurang dari 60%. Hampir sepertiga kasusnnya terjadi pada balita (26,7%). Tujuan penelitian adalah untuk mengetahui hubungan faktor lingkungan dengan kejadian diare balita. Penelitian menggunakan desain analitik cross sectional dengan jumlah subjek 63 orang dengan teknik multi stage random sampling. Penelitian menggunakan kuesioner melalui wawancara dan observasi. Hasil penelitian didapatkan analisis univariat kejadian diare balita 36 (57,1%), pembuangan tinja yang tidak sehat 34 (54%), sumber air minum tidak sehat 30 (47,6%), SPAL RT yang buruk 40 (63,5%), pengelolaan sampah yang buruk 36 (57,1%). Analisis bivariat didapatkan hasil ada hubungan signifikan antara pembuangan tinja dengan kejadian diare balita (p=0,010), OR=4,5. Ada hubungan signifikan antara sumber air minum dengan kejadian diare balita (p=0,026), OR=3,7. Ada hubungan yang signifikan antara SPAL RT dengan kejadian diare balita (p=0,003), OR=6. Ada hubungan yang signifikan antara pengelolaan sampah dengan kejadian diare balita (p=0,043), OR=3,3. Kesimpulan adalah ada hubungan yang signifikan antara faktor lingkungan.Kata kunci: diare, balita, faktor lingkungan AbstractKambang Health Center has the highest incidence of diarrhea in the South Pesisir which became the highest incidence in West Sumatra in 2012 with healthy sanitary conditions of less than 60%. Nearly one-third of cases occur in children under five (26.7%). The objective of this study was to determine the relationship of environmental factors with the incidence of diarrhea in children under five.This study used a cross sectional analytic method with a total subjek were 63 people, chosen by multistage random sampling technique. This study also used a questionnaire with interviewed and observation. Univariate analysis results showed that the incidence of diarrhea children under five 36 (57.1%), unsanitary excreta disposal 34 (54%), the source of drinking water is not healthy 30 (47.6%), poor waste water drainage system 40 (63.5%), poor waste management 36 (57.1%). Bivariate analysis showed significant relationship between excreta disposal site with the incidence of diarrhea in children under five with p=0.010 and OR=4.5. There is a significant relationship between sources of drinking water with the incidence of diarrhea in children under five with p=0.026 and OR=3.7. There is a significant relationship between the waste water drainage system with the incidence of diarrhea in children under five with p=0.003 and OR=6. There is a significant relationship between waste management with the incidence of diarrhea in children under five with p=0.043 and OR=3.3.In conclusion, there were significant relationship between environmental factors.Keywords: diarrhea, children under five, environmental factors

scholarly journals Congregating behavior and response to resource distribution of the Green House Millipede, Oxidus gracilis

2016 ◽  
Author(s):  
Gregory Bulpitt
Keyword(s):  
Environmental Factors ◽  
Abiotic Factors ◽  
Environmental Parameters ◽  
Field Recording ◽  
Litter Cover ◽  
Rock Cover ◽  
Oxidus Gracilis ◽  
Experimental Trials ◽  
And Behavior ◽  
Number Of Individuals

Background. Congregating behaviors, though common among many animal species, are little studied among millipedes. It is also unclear to what extent abiotic factors influence the distribution and behavior of millipedes. The species Oxidus gracilis was surveyed around several streams on the island of Mo’orea along with soil moisture, leaf litter cover, and rock cover. Experiments were designed in order to determine how an innate congregating behavior may affect their distributions. Methods. Fifteen transects were performed in the field, recording O. gracilis abundances and the three environmental factors every 1 m. Forty trials were performed using covered bins filled with soil and five fruits of the Tahitian chestnut tree (Inocarpus fagifer). Ten millipedes were placed in the box and left for an hour, after which the number of individuals per fruit was recorded. Results. It was found that while none of the three environmental factors were strong indicators of the distribution of O. gracilis , individuals did in fact demonstrate a tendency to congregate in the experimental trials. Discussion. The lack of significant relationships with the three environmental parameters suggests a generalist behavior of this millipede species, potentially benefitting its invasive nature. The congregating behavior could potentially be for the purposes of mating or defense. Although not studied in this paper, it is possible that conspecific chemical cues are responsible.

scholarly journals Are Tropical Reptiles Really Declining? A Six-year Survey of Snakes in Drake Bay, Costa Rica, and the Role of Temperature, Rain and Light

2019 ◽  
Author(s):  
José Pablo Barquero-González ◽  
Tracie L. Stice ◽  
Gianfranco Gómez ◽  
Julian Monge-Najera
Keyword(s):  
Costa Rica ◽  
Environmental Factors ◽  
Sea Level ◽  
Tropical Rainforest ◽  
Number Of Species ◽  
Transect Counts ◽  
Number Of Individuals ◽  
Diet Type

Introduction: studies in the last two decades have found declining snake populations in both temperate and tropical sites, including informal reports from Drake Bay, Costa Rica. Objective: to investigate if reports of decreasing snake populations in Drake Bay had a real basis, and if environmental factors, particularly temperature, rain and light, have played a role in that decrease. Methods: we worked at Drake Bay from 2012 through 2017 and made over 4000 h of transect counts. Using head flashlights we surveyed a transect covered by lowland tropical rainforest at an altitude of 12–38 m above sea level, near the Agujas River, mostly at 1930–2200 hours. We counted all the snakes that we could see along the transect. Results: snake counts increase from August to September and then decline rapidly. The May snakes/rainfall peaks coincide, but the second snake peak occurs one month before the rain peak; we counted more snakes in dry nights, with the exception of Imantodes cenchoa which was equally common despite rain conditions. We saw less Leptodeira septentrionalis on bright nights, but all other species were unaffected. Along the six years, the number of species with each diet type remained relatively constant, but the number of individuals declined sharply for those that feed on amphibians and reptiles. We report Rhadinella godmani, a highland species, at 12–38 m of altitude. Conclusion: night field counts of snakes in Drake Bay, Costa Rica, show a strong decline from 2012 through 2017.

scholarly journals Evaluasi Tegakan Mangrove Hasil Rehabilitasi dengan Teknik Guludan

2018 ◽  
Vol 9 (3) ◽  
pp. 175-181
Author(s):  
Reyna Ashari ◽  
Cecep Kusmana ◽  
Budi Kuncahyo
Keyword(s):  
Environmental Factors ◽  
Water Level ◽  
Soil Ph ◽  
Soil Salinity ◽  
Rhizophora Mucronata ◽  
Factors Affecting ◽  
Sonneratia Caseolaris ◽  
Mangrove Rehabilitation ◽  
Total P

Guludan technique becomes an alternative for mangrove rehabilitation in the disused fishponds. This technique has been implemented since 2005 on the coast of Jakarta. The wider application of this technique requires several studies in advance to see growth of the mangrove in the already planted guludan. This study aims to measure the growth of mangroves planted by guludan techniques, identify environmental factors that affect their mangrove growth, and analyze their relationship. Measurements were performed on 40 guludan samples which planted by Rhizopora mucronata in 2010 - 2013. Rhizopora mucronata grew well in the guludans, followed by Sonneratia caseolaris that grew naturally. Both were dominated by individuals in sapling phase. Meanwhile, environmental factors affecting mangrove growth were N-total, P, Mg, Ca, Na, clay texture, CEC, soil salinity, soil pH, and water level in the guludan.Keywords: guludan technique, mangrove rehabilitation, Rhizophora mucronata, Sonneratia caseolaris

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