Ecological study of natural habitat of endemic specie Aristolochia baetica L. in Tessala mountains (western Algeria)

The natural habitat of Paracoccidioides brasiliensis, agent of paracoccidioidomycosis (PCM), remains unknown. This study is aimed at establishing associations between the ecological variables present in all Colombian municipalities and the incidence of PCM. Records of 940 patients were studied and several ecological variables analysed, as well as their association to amount of patients per total rural population in each municipality, determined through a multivariate analysis. All 940 patients came from 216 municipalities (20·3 %), out of which, 93 were birthplace and place of long-term residence for 121 patients. The Incidence Rate Ratio (IRR) was determined for these 93 municipalities. The following variables fitted the model: altitude from 1000 to 1499 metres above sea level (IRR = 6·37), rainfall from 2000 to 2999 mm (IRR = 2·15), presence of humid forests (Holdridge) (IRR = 1·79) and coffee (IRR = 1·95), tobacco (IRR = 3·59) crops. These results indicate that these municipalities constitute reservareas for P. brasiliensis (Borelli).

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Ecological study of Sago Palm (Metroxylon sagu Rott ver molat (Becc.)) in the natural habitat at Malili District East Luwu South Sulawesi

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/807/2/022031 ◽

2021 ◽

Vol 807 (2) ◽

pp. 022031

Author(s):

Hadijah A Karim

Keyword(s):

Ecological Study ◽

Natural Habitat ◽

Sago Palm ◽

South Sulawesi ◽

Metroxylon Sagu

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EKOLOGI TEMPAT TUMBUH SARANG SEMUT PADA TAMAN WISATA ALAM GUNUNG MEJA MANOKWARI

EnviroScienteae ◽

10.20527/es.v14i3.5690 ◽

2018 ◽

Vol 14 (3) ◽

pp. 187 ◽

Cited By ~ 1

Author(s):

Endria Sada ◽

Rima Herlina S. Siburian ◽

Novita Panambe

Keyword(s):

Host Plants ◽

Ecological Study ◽

Natural Habitat ◽

Growth Zone ◽

Basic Information ◽

Nature Tourism ◽

Growth Site ◽

Survey Technique ◽

Descriptive Method ◽

The Ideal

The ant-plant Sarang Semut is one of the medicinal antimicrobial plants that is very beneficial to human health. As such the plant has widely been exploited in their natural habitat. The silviculture of this plant is not available due to limited knowledge about the existence in nature. Therefore, it is imperative to undertake the ecological study on the growth site of this plant in nature to collect the basic information for the culture and cultivation of this plant. The method used in this research was the descriptive method with the survey technique in Gunung Meja Nature Tourism Park, Manokwari. The research showed that one species of ant-plant was found namely Myrmecodia cf. schlechteri Valeton. The plant is epifit to selective host plants such as Garcinia picrorrhiza, Sterculia macrophylla, Intsia bijuga, Pometia coreacea, and Antiaris toxicaria. The ideal growth zone of this plant is in Zone 2 and 3.

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Occurrence of Legionella in groundwater: an ecological study

Water Science & Technology ◽

10.2166/wst.2001.0719 ◽

2001 ◽

Vol 43 (12) ◽

pp. 99-102 ◽

Cited By ~ 38

Author(s):

S. Riffard ◽

S. Douglass ◽

T. Brooks ◽

S. Springthorpe ◽

L. G. Filion ◽

...

Keyword(s):

Monoclonal Antibody ◽

Flow Cytometry ◽

Pilot Study ◽

Ecological Study ◽

Culture Media ◽

Natural Habitat ◽

Water Environment ◽

Immunomagnetic Separation ◽

Pcr Assay ◽

Groundwater Samples

The natural habitat of Legionella is the water environment. Little is known about their presence in groundwaters in spite of the fact that many millions around the globe regularly rely on groundwaters. This pilot study was aimed at evaluating the occurrence of Legionella in groundwater samples (water and biofilms) collected from various sites. Water and biofilm samples from selected groundwater sources were examined for Legionella using culture media (selective and non-selective) and a semi-nested PCR assay. Innovative approaches such as immunomagnetic separation (IMS) in combination with cultivation and flow cytometry were also evaluated. The findings available thus far show that (a) Legionella could be readily recovered from groundwater samples by cultivation even though their numbers showed considerable variations, (b) surprisingly, the PCR methodology was not yet as sensitive as cultivation and (c) flow cytometry was not directly applicable on natural samples because of debris and the high number of heterotrophic associated microflora from which some members were likely to cross-react with the monoclonal antibody used for separation procedures (IMS).

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Boualem, Mohamed Arbaoui, Mar FerrerSuay & Juli Pujade-Villar Bio-ecological study of hyperparasitoid aphids in the region of Mostaganem (north-western Algeria)

BIODIVERSITY JOURNAL ◽

10.31396/biodiv.jour.2020.11.3.663.670 ◽

2020 ◽

Vol 11 (3) ◽

pp. 663-670

Author(s):

Amine Ghelamallah ◽

Djilali Benabdelmoumene ◽

Rachid Bouhraoua ◽

Malika Boualem ◽

Mohamed Arbaoui ◽

...

Keyword(s):

Ecological Study ◽

Western Algeria ◽

North Western

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Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100098551 ◽

1981 ◽

Vol 39 ◽

pp. 410-411

Author(s):

L. P. Hardie ◽

D. L. Balkwill ◽

S. E. Stevens

Keyword(s):

Growth Medium ◽

Green Alga ◽

Natural Habitat ◽

Iron Limitation ◽

Natural Environments ◽

Blue Green Alga ◽

Marine Cyanobacterium ◽

Natural Systems ◽

Thin Sectioning ◽

Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

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