Rapid urbanization has resulted in pervasive occurrence of antibiotic resistance genes (ARGs) in urban aquatic ecosystems. However, limited information is available concerning the ARG profiles and the forces responsible for their assembly in urban landscape lagoon systems. Here, we employed high-throughput quantitative PCR (HT-qPCR) to characterize the spatial variations of ARGs in surface and core sediments of Yundang Lagoon, China. The results indicated that the average richness and absolute abundance of ARGs were 11 and 53 times higher in the lagoon sediments as compared to pristine reference Tibetan lake sediments, highlighting the role of anthropogenic activities in ARG pollution. Co-occurrence network analysis indicated that various anaerobic prokaryotic genera belonging to Alpha-, Deltaproteobacteria, Bacteroidetes, Euryarchaeota, Firmicutes and Synergistetes were the potential hosts of ARGs. The partial least squares-path modeling (PLS-PM) analysis revealed positive and negative indirect effects of physicochemical factors and heavy metals on the lagoon ARG profiles, via biotic factors, respectively. The horizontal (mediated by mobile genetic elements) and vertical (mediated by prokaryotic communities) gene transfer may directly contribute the most to drive the abundance and composition of ARGs, respectively. Furthermore, the neutral community model demonstrated that the assembly of sediment ARG communities was jointly governed by deterministic and stochastic processes. Overall, this study provides novel insights into the diversity and distribution of ARGs in the benthic habitat of urban lagoon systems and underlying mechanisms for the spread and proliferation of ARGs.

Horizontal and vertical gene transfer drive sediment antibiotic resistome in an urban lagoon system.

本文对海南岛南湾半岛野生猕猴的正常和受惊叫声进行了分析和研究:成年母猴与幼体正常和受惊时的叫声是一种谐波结构,其叫声的变化表现为谐波频数上不同的幅值组合。成年母猴正常和受惊叫声的高幅谐波SHHA1,2分别为300Hz、550Hz和300Hz、1.2KHz;幼年猴正常和受惊叫声的高幅谐波SHHA1,2,3分别为300Hz、1KHz、2KHz和350Hz、1KHz、3KHz。SHHA1是波形结构中周期波上叠加的低幅波动LAP在功率谱上的反映,而SHHA2,是与波形中高幅阵脉冲列HAPT相对应的,波形结构中周期波的平均周期T始终保持一致为20ms。

猕猴（Macaca mulatta）叫声特点的研究

Salinity is one of the oldest and most serious environmental problems in the world. The increasingly widespread salinization of soils and water resources represents a growing threat to agriculture around the world. A strategy to cope with this problem is to cultivate salt-tolerant crops and, therefore, it is necessary to identify plant species that are naturally adapted to high-salinity conditions. In this review, we focus our attention on some plant species that can be considered among the most representative halophytes of the Mediterranean region; they can be potential resources, such as new or relatively new vegetable crops, to produce raw or minimally processed (or ready-to-eat) products, considering their nutritional properties and nutraceuticals. The main biological and agronomic characteristics of these species and the potential health risks due to mycotoxigenic fungi have been analyzed and summarized in a dedicated section. The objective of this review is to illustrate the main biological and agronomical characteristics of the most common halophytic species in the Mediterranean area, which could expand the range of leafy vegetables on the market.

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Biological and Agronomic Traits of the Main Halophytes Widespread in the Mediterranean Region as Potential New Vegetable Crops

Fecal pollution mediates the dominance of stochastic assembly of antibiotic resistome in an urban lagoon (Yundang lagoon), China.

A critical review on operation and performance of source water control strategies for cyanobacterial blooms: Part II-mechanical and biological control methods.

Human-Rhesus monkey conflicts were recorded at Rampur Village under Khidirpur Union Parishad of Monohardi upazila under Narsingdi District in Bangladesh from April to September 2012. There were three groups of Rhesus monkeys living in the area. The focal study group comprised 26 individuals (4 adult males, 6 adult females, 10 juveniles and 6 infants). The monkeys consumed parts of 10 plant species. From the questionnaire survey, it was found that the greatest damage caused by monkeys was on betel leaf vines and the least damage on vegetables. Eighty percent respondents opted to conserve the monkeys and 20% opined status quo. Some restricted areas (especially khas lands) may be identified and planted with some fruit trees for survival of monkeys and for reducing conflicts with humans.

/pdf/human-rhesus-monkey-conflict-at-rampur-village-under-38mx12zfsl.pdf

Human-Rhesus Monkey conflict at Rampur Village under Monohardi Upazila in Narsingdi District of Bangladesh

This study aims to assess the pollution status and spatial distribution of heavy metals, including Chromium (Cr), Manganese (Mn), Nickel (Ni), Copper (Cu), Zinc (Zn), Arsenic (As), Cadmium (Cd), an...

Heavy metal pollution status, spatial distribution and associated ecological risks within sediments of Yundang Lagoon catchment in Xiamen, China, after 30 years continuous ecological rehabilitation and management

Sesuvium portulacastrum is a well-known halophyte with considerable Cd accumulation and tolerance under high Cd stress. This species is also considered as a good candidate of Cd phytoremediation in the polluted soils. However, the mechanism of Cd accumulation, distribution and fractionation in different body parts still remain unknown. Seedlings of Sesuvium portulacastrum were studied hydroponically under exposure to a range of Cd concentrations (50 μM or μmol/L to 600 μM or μmol/L) for 28 days to investigate the potential accumulation capability and tolerance mechanisms of this species. Cd accumulation in roots showed that the bio-concentration factor was > 10, suggesting a strong ability to absorb and accumulate Cd. Cd fractionation in the aboveground parts showed the following order of distribution: soluble fraction > cell wall > organelle > cell membrane. In roots, soluble fraction was mostly predominant than other fractions. Cd speciation in leaves and stems was mainly contained of sodium chloride and deionised water extracted forms, suggesting a strong binding ability with pectin and protein as well as with organic acids. In the roots, inorganic form of Cd was dominant than other forms of Cd. It could be suggested that sodium chloride, deionised water and inorganic contained form of Cd are mainly responsible for the adaption of this plant in the Cd stress environment and alleviating Cd toxicity.

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Cadmium accumulation, subcellular distribution and chemical fractionation in hydroponically grown Sesuvium portulacastrum [Aizoaceae].

This study investigates the pollution status, spatial distribution of heavy metals including Cr, Mn, Ni, Cu, Zn, As, Cd and Pb, in sediments from the Longhu Lake, and evaluates possible ecological ...

https://www.tandfonline.com/doi/pdf/10.1080/26395940.2021.1894988

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Human-primates conflict is an important issue for the conservation of primate biodiversity globally. We reviewed research papers that have been published over the last 20 years on Bangladesh regarding the human-primates conflicts. We also identified primate species are involved in conflict, crop damage preference by primates and local peoples' perceptions towards primates. Our study suggests that three species (Rhesus macaque Macaca mulatta, Capped langur Trachypithecus pileatus, and Common langur Semnopithecus entellus) are mostly involved in the conflict with humans. Crop damage is the main cause of human-primates conflict in Bangladesh. Decreasing of forest covers and increasing of human settlements in and around the forests are responsible for enhancing conflict with the non-human primates. Moreover, people’s aggressive behaviors are responsible to cause primates to conflict with humans. People perception mostly towards the non forested primate species are more aggressive than forested primate, this is due to economic damages to the local people by primates. The progress of research regarding human-primates conflict indicates that after 2011, researchers are more concerned with human-primates conflict research than in or before 2001. This concerned attention of researchers about human-primates conflicts indicates that in Bangladesh these types of conflict may increase

Mohammad Mazbah Uddin

Papers

Human-Rhesus Monkey conflict at Rampur Village under Monohardi Upazila in Narsingdi District of Bangladesh

Heavy metal pollution status, spatial distribution and associated ecological risks within sediments of Yundang Lagoon catchment in Xiamen, China, after 30 years continuous ecological rehabilitation and management

Cadmium accumulation, subcellular distribution and chemical fractionation in hydroponically grown Sesuvium portulacastrum [Aizoaceae].

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Human - primates conflict in Bangladesh: a review.