Richness Values Research Articles

Using SWOT Analysis to Solve the Problem of Forbidden City Brand Influence under the Background of New Media

The Palace Museum is not only comprehensive but also the largest museum of ancient Chinese culture and art. The Palace Museum brand is a cultural and creative brand derived from the landmark buildings of the Palace Museum through publicity and transformation in the new media era. The cultural and creative brand refers to the value transformation and empowerment of products by relying on personal wisdom and modern scientific and technological means this research seek to analyze the connection between consumers’ impression of the Palace Museum brand and brand loyalty in the new media background of Z era. This analysis concluded that the Palace Museum brand should not be over-commercialized or influenced by the fast-selling atmosphere of the Z era to reduce the actual value of the brand. As a state-supported transformation brand, the Palace Museum brand had a rich cultural value base and production resource support, but it abused brand IP to produce low-quality products due to the atmosphere of the times, resulting in a decline in brand image and loyalty. Therefore, in this context, due to the negative impression brought by the sub-brand and the strong internal and external competitive factors, the brand's image positioning has deviated, the value is reduced, and the brand loyalty is reduced. This paper uses SWOT analysis to split the overall factors of the Palace Museum brand to find solutions.

Aesthetic Ideas in Japanese Classical Literature in the New Media Era

With the rapid development of new media technology, people's reading and cultural consumption methods are also undergoing tremendous changes. However, under the background of this change, Japanese classical literature, as a traditional cultural form, still has rich aesthetic concepts and cultural values. From the perspective of aesthetics, this article discusses the aesthetic concepts in Japanese classical literature in the new media era, aiming to reveal its inspiration and value to contemporary culture.

Chitinase Is Involved in the Fruiting Body Development of Medicinal Fungus Cordyceps militaris

Cordyceps militaris is a famous traditional edible and medicinal fungus in Asia, and its fruiting body has rich medicinal value. The molecular mechanism of fruiting body development is still not well understood in C. militaris. In this study, phylogenetically analysis and protein domains prediction of the 14 putative chitinases were performed. The transcription level and enzyme activity of chitinase were significant increased during fruiting body development of C. militaris. Then, two chitinase genes (Chi1 and Chi4) were selected to construct gene silencing strain by RNA interference. When Chi1 and Chi4 genes were knockdown, the differentiation of the primordium was blocked, and the number of fruiting body was significantly decreased approximately by 50% compared to wild-type (WT) strain. The length of the single mature fruiting body was shortened by 27% and 38% in Chi1- and Chi4-silenced strains, respectively. In addition, the chitin content and cell wall thickness were significantly increased in Chi1- and Chi4-silenced strains. These results provide new insights into the biological functions of chitinase in fruiting body development of C. militaris.

The connectome of an insect brain.

Brains contain networks of interconnected neurons and so knowing the network architecture is essential for understanding brain function. We therefore mapped the synaptic-resolution connectome of an entire insect brain (Drosophila larva) with rich behavior, including learning, value computation, and action selection, comprising 3016 neurons and 548,000 synapses. We characterized neuron types, hubs, feedforward and feedback pathways, as well as cross-hemisphere and brain-nerve cord interactions. We found pervasive multisensory and interhemispheric integration, highly recurrent architecture, abundant feedback from descending neurons, and multiple novel circuit motifs. The brain's most recurrent circuits comprised the input and output neurons of the learning center. Some structural features, including multilayer shortcuts and nested recurrent loops, resembled state-of-the-art deep learning architectures. The identified brain architecture provides a basis for future experimental and theoretical studies of neural circuits.

Richness and composition of terrestrial mammals vary in eucalyptus plantations due to stand age

AbstractPlantation forests substitute natural habitats and have rotation cycles of 7 years due to their high growth rates. This variation reflects on local and landscape changes, influencing habitat availability and affecting mammal communities. In this study, our general hypothesis was that the richness and composition of mammals varied in eucalyptus plantations in relation to native forest patches and in relation to the age of eucalyptus plantations. We predicted that (1) there would be lower mammalian richness and compositional differences in eucalyptus plantations compared to native vegetation due to monocultures having simplified environmental characteristics and (2) predicted that the richness and composition would vary according to eucalyptus age and that the highest values of richness would be found in plantations of up to middle age, considering that in these phases there are environmental characteristics that positively qualify these structures for a greater presence of fauna, such as the shrubby aspect of the plantations and the presence of undergrowth. We performed model selection to observe the effect of environmental variables on mammalian richness. We also performed a multivariate permutational analysis of variance, a non‐metric multidimensional scaling and partitioned the beta diversity to observe how the composition was influenced by environmental variables. We found greater richness in the native vegetation compared to eucalyptus plantations. The richness of the plantations varied according to the age, with higher values up to middle age. The composition varied according to the land user/cover, with the eucalyptus age and with the management unit due to the nestedness of species. We suggest that eucalyptus plantations at early ages are more used by mammals due to the shrubby aspect of the stand, generating a positive visual effect for the search of resources and shelter, in addition to the possibility of the occurrence of grasses, some understory and lower anthropogenic disturbance.

Biodiversity surveys of grassland and coastal habitats in 2021 as a documentation of pre-war status in southern Ukraine.

This paper presents two sampling-event datasets with occurrences of vascular plants, bryophytes and lichens collected in May-June 2021 in southern Ukraine. We aimed to collect high-quality biodiversity data in an understudied region and contribute it to international databases and networks. The study was carried out during the 15th Eurasian Dry Grassland Group (EDGG) Field Workshop in southern Ukraine and the Dark Diversity Network (DarkDivNet) sampling in the Kamianska Sich National Nature Park. By chance, these datasets were collected shortly before the major escalation of the Russian invasion in Ukraine. Surveyed areas in Kherson and Mykolaiv Regions, including established monitoring plots, were severely affected by military actions in 2022. Therefore, collected data are of significant value in the context of biodiversity documentation. The knowledge about the biodiversity of this area will help to assess the environmental impact of the war and plan restoration of the damaged or destroyed habitats. The first preliminary analysis of collected data demonstrates the biodiversity richness and conservation value of studied grassland habitats. We provide sampling-event datasets with 7467 occurrences, which represent 708 taxa (vascular plants, bryophytes and lichens) collected in 275 vegetation relevés. Amongst them, vascular plants are represented by 6665 occurrences (610 taxa), lichens - 420 (46) and bryophytes - 381 (51). Several new species were reported for the first time at the national or regional level. In particular, one vascular plant species (Torilispseudonodosa) and two lichen species (Cladoniaconista, Endocarponloscosii) were new to Ukraine. One vascular plant (Stipatirsa), two species of bryophytes (Rhynchostegiummegapolitanum, Ptychostomumtorquescens) and three species of lichens (Cladoniacervicornis, C.symphycarpa, Involucropyreniumbreussi) were recorded for the first time for the Kherson Region. Additionally, these datasets contain occurrences of taxa with narrow distribution, specialists of rare habitat types and, therefore, represented by a low number of occurrences in relevant biodiversity databases and particularly in GBIF. This publication highlights the diversity of natural vegetation and its flora in southern Ukraine and raises conservation concerns.

The Path of Integrating the CPC's Century-old Foreign Affairs Achievements into the Introductory Course in Colleges and Universities

The Resolution deliberated and passed at the CPC 6th Plenary Session of the 19th Central Committee made an important summary of the major achievements and historical experience of the CPC's foreign affairs. This article discusses the CPC's century-old foreign affairs achievements and history from four periods: "the period of new democratic revolution", "the period of socialist revolution and construction", "the new period of reform, opening up and socialist modernization", and "socialism with Chinese characteristics has entered a new era". The specific path of integrating experience into the Introductory course in colleges and universities has rich academic value and application value.

Virtue Ethics as a Model for Addressing Moral Decline in Ghana

Every culture espouses distinct moral values systems which serve as the blueprints guiding behaviours of members of a society. Ghana as a country has a rich moral value system that shapes its citizens’ worldviews and informs the way they relate with other human beings. A reflection on, past moral values of Ghanaian societies, however, reveals a moral deficit. This situation throws up the following crucial questions. What is the future of Ghanaian societies given the current state of moral decadence? What can be done to salvage the present state of moral decadence? The paper is approached qualitatively, using interviews, and proposes a significant return to moral virtues where societies will have to teach and ensure that the young ones practice moral values through examples of virtuous living. Keywords: Ghana, Sustainable Future, Moral Decadence, Moral Values, Virtue Ethics.

AN ANALYSIS OF THE DEVELOPMENT OF THE TOURISM INDUSTRY IN THE AKSU-ZHABAGLY BIOSPHERE RESERVE OF KAZAKHSTAN

Based on the analysis of the current development state of the tourism development in Aksu-Zhabagly Biosphere Reserve (BR), this paper discusses how to properly handle the contradiction between nature protection and tourism development, determines the problems existing in tourism development, and proposes a strategy for the development of eco-tourism in Kazakhstan. The aim of the study is to give some recommendations for the Aksu-Zhabgly ecotourism destination by employing a combination of field observation, examination, evaluation, and SWOT analysis. The strategic suggestions for the future development of tourism in Aksu-Zhabagly BR were determined mainly by the SWOT analysis results. The study results showed that the main strengths are convenient accessibility, diversified wild animals and plants, rich natural values, tranquil life in a typical rural setting, and favorable climatic conditions in the summer. And the low quality of tourist services, lack of competition among tourist destinations, lack of necessary infrastructure for tourists, lack of investment capital for tourism development, and lack of access to credit for small business development were determined as the main weakness. The results also revealed the preparation of different types of tour packages, the development of community tourism groups in Zhabagly, the potential for the production and sale of folk crafts and souvenirs, and improving accessibility (rehabilitation of roads, public transport) are the main opportunities. Finally, the hazards of increased influx of tourists, monopolization of tourist revenues and uncontrolled development of tourism, unlimited use of social opportunities and natural resources, loss of newly acquired image through the supply of low-quality goods, and the inability of other neighboring settlements to compete with Zhabagly village were proved to be the main threat to the effective implementation of sustainable development of tourism in the Aksu-Zhabagly tourist site.

Double-cavity nor-seco-cucurbit[10]uril-based supramolecular assembly for selective detection and removal of trinitrophenol

The effective removal and selective detection of explosive and toxic pollutant trinitrophenol (TNP) is an attractive but challenging field. Herein, a double-cavity nor-seco-cucurbit[10]uril (ns-Q[10])-based supramolecular assembly 8-HQ@ns-Q[10] was fabricated and its structure was characterized by X-ray single crystal diffraction. In this assembly, the stoichiometric ratio of ns-Q[10] and 8-hydroxyquinoline (8-HQ) is 1:2, which is also attributed to the special double-cavity structure of ns-Q[10]. The luminescence sensing experiments showed that 8-HQ@ns-Q[10] can be used as a good fluorescence-enhanced sensing material (enhanced 27-fold) for the rapid detection of explosives and the aqueous contaminant TNP, with a limit of detection (LOD) of 2.07 × 10−5 mol/L, without interference from other phenolic compounds. Furthermore, TNP can be efficiently removed in the presence of assembly 8-HQ@ns-Q[10], and the removal efficiency is more than 89%. Therefore, the supramolecular assembly 8-HQ@ns-Q[10], as a fluorescence-enhanced luminescence sensor and adsorption material, has rich research value and potential application prospect when applied to the detection and removal of TNP in aqueous environment.

Prevalence and ecological factors affecting the distribution of plant-parasitic nematodes in Prunus groves in Spain

A wide survey was conducted to study plant-parasitic nematodes (PPNs) associated with Prunus groves in Spain. This research aimed to determine the prevalence and distribution of PPNs in Prunus groves, as well as the influence of explanatory variables describing soil, climate and agricultural management in structuring the variation of PPNs community composition. A total of 218 sampling sites were surveyed and 84 PPN species belonging to 32 genera were identified based of an integrative taxonomic approach. PPN species considered as potential limiting factors in Prunus production, such as Meloidogyne arenaria, M. incognita, M. javanica, Pratylenchus penetrans and P. vulnus, were identified in this survey. Seven soil physico-chemical (C, Mg, N, Na, OM, P, pH and clay, loamy sand and sandy loam texture classes), four climate (Bio04, Bio05, Bio13 and Bio14) and four agricultural management variables (grove-use history less than 10 years, irrigation, apricot seedling rootstock, and Montclar rootstock) were identified as the most influential variables driving spatial patterns of PPNs communities. In particular, younger plantations showed higher values for species richness and diversity indices than groves cultivated for more than 20 years with Prunus spp. Our study increases the knowledge of the distribution and prevalence of PPNs associated with Prunus rhizosphere, as well as on the influence of explanatory variables driving the spatial structure PPNs communities, which has important implications for the successful design of sustainable management strategies in the future in this agricultural system.

Responses of the Growth Characteristics of Spinach to Different Moisture Contents in Soil under Irrigation with Magnetoelectric Water

Spinach (Spinacia oleracea L.) is a worldwide vegetable crop with rich nutritional value, and drought is the main factor restricting its growth. Magnetized water and de-electronated water have shown potential for improving yield and quality in some crops. To assess the influence of magnetized-de-electronated water (denoted magnetoelectric water) on the growth characteristics of spinach, five soil moisture gradients were developed, including 45–55%, 55–65%, 65–75%, 75–85%, and 85–95% of field capacity (FC). The results demonstrated that the influence of irrigation by magnetoelectric water on the growth of spinach was obvious. All the spinach indicators with each soil moisture gradient under irrigation by magnetoelectric water were higher than those of irrigation by conventional water, including the fresh weight of shoots, chlorophyll content, and the total nitrogen content in the leaves. In particular, the improvement in fresh weight of shoots and the total nitrogen contents in the leaves had the highest values, as demonstrated by increases of 52.26% and 25.87%, respectively, under 65–75% of the gradient of FC. Additionally, the fitting results of the photo response curve by different light response models varied. The modified rectangular hyperbolic model was the most accurate for all the treatment groups and thus was the optimized model for the photosynthetic characteristics of spinach under irrigation by magnetoelectric water analysis. The parameters of the photo response curve showed that the dark respiration rate, apparent quantum efficiency, light saturation point, and maximum net photosynthetic rate all increased following irrigation by magnetoelectric water with different soil moisture gradients compared with conventional water irrigation. These research results can provide new technical support for improving the water use efficiency of irrigation water and increasing vegetable production.

To spray or not to spray: Impact of phosphite spraying for Phytophthora cinnamomi control on Proteaceae species in southwestern Australia

AbstractPhosphite has been sprayed on threatened natural plant communities in southwestern Australia for the past 25 years to mitigate the impact of the globally widespread plant pathogen, Phytophthora cinnamomi. Of concern is that this may result in an increase in phosphorus concentrations in naturally nutrient deficient soils, causing the loss of plant species that are sensitive to increased phosphorus levels. The impact of aerial spraying phosphite on soil and Proteaceae species richness and abundance was measured at three sites within the Southeast Coastal Province of Western Australia. Healthy and diseased vegetation which had been sprayed with phosphite for 14–26 years was compared with nonsprayed healthy and diseased vegetation. Contrary to expectations, there was no evidence that spraying is doing harm to Proteaceae species at the three sites studied. Healthy‐nonsprayed and Healthy‐sprayed areas had generally similar levels of soil total P, and this was associated with similar values for Proteaceae species richness and abundance in these areas. Phosphite spraying of diseased vegetation benefited Proteaceae plant diversity and abundance by preventing the disappearance of some species. Given these results, it was recommended that phosphite spraying be continued as a management action for controlling Phytophthora cinnamomi while research into alternative solutions continues.

Multi-Objective Lower Irrigation Limit Simulation and Optimization Model for Lycium Barbarum Based on NSGA-III and ANN

Lycium barbarum has rich medicinal value and is an important medicinal and economic tree species in China, with an annual output value of 21 billion RMB. The yield and the quality of Lycium barbarum dry fruit are the crucial issues that affect the cultivation of Lycium barbarum and the income of farmers in the Ningxia water shortage area. According to the local acquisition standard of Lycium barbarum, the amount of dry fruit per 50 g (ADF-50) is the key factor in evaluating the quality and determining the purchase price. In order to optimize the irrigation lower limit of automatic drip irrigation system with multiple objectives, the yield and ADF-50 are selected to be optimal objectives. The lower irrigation limits of the automatic drip irrigation system in the full flowering stage, the summer fruiting stage, and the early autumn fruiting stage are optimized by the third generation of non-dominated sorting genetic algorithm (NSGA-III) in this paper. The mathematical relationships between irrigation lower limit and irrigation quantity, irrigation amount, yield, and ADF-50 were established by the water balance model, water production function (WPF), and artificial neural network model (ANN), respectively. The accuracy of the water balance model and ANN were verified by experiments. The experiments and optimization results show that: (1) irrigation quantity and ADF-50 calculated by the water balance model and ANN are accurate, and their Nash–Sutcliffe coefficient are 0.83 and 0.66; (2) In a certain range of irrigation quantity, ADF-50 and Lycium barbarum yield show competitive relation. By solving the NSGA-III optimization model, the lower irrigation limits schemes, which tend to different objectives, and a compromise scheme can be obtained; (3) Compared with the original lower limit of irrigation water, the compromise scheme’s yield and quality of Lycium barbarum are improved 10.7% and 8.8% respectively. The results show that the automatic drip irrigation system’s lower irrigation limit scheme optimized by the model can improve not only the yield but also the quality of Lycium barbarum. This provides a new idea for establishing the irrigation lower limit of the automatic drip irrigation system in the Lycium barbarum planting area.

Using Simulations to Evaluate the Utility of Geohistorical Reference Conditions for Assessing Ecological Quality

Incorporating paleontological data into the methods and formats familiar to conservation practitioners may facilitate greater use of paleontological data in conservation practice. Benthic indices (e.g., Multivariate-AZTI Marine Biotic Index; M-AMBI) utilize reference conditions for monitoring ecological conditions. However, reference conditions from monitoring records are limited in temporal scope and often represent degraded conditions, which can cause inaccurate assessments of ecological quality. Paleontological data, such as molluscan death assemblages, have potential to provide long-term, location-specific reference conditions, which are otherwise inaccessible to decision-makers. Here we use simulations of living communities under constant and changing environmental conditions to evaluate the capacity of death assemblage reference conditions to replicate M-AMBI values when used in place of reference conditions from the living communities. Reference conditions from all death assemblage scenarios successfully replicated correct remediation decisions in most simulation runs with environmental change and stability. Variations in M-AMBI values were due to overestimated species richness and Shannon entropy values in the death assemblages and effects of changes to these parameters varied across scenarios. Time averaging was largely beneficial, particularly when environmental change occurred, and short-term observations of the living communities produced incorrect remediation decisions. When the duration of time averaging is known, death assemblages can provide valuable longer-term perspectives with the potential to outperform temporally constrained baseline information from monitoring the living community.

Molecular and morphological analyses disclose the existence of three species of Dolichopoda (Orthoptera: Rhaphidophoridae) in the Calabria region (Italy)

ABSTRACT For a long time, Dolichopoda palpata was the only species of this genus thought to live in the cave habitats of the Calabrian region. The results of our study, based on morphological and molecular data, highlight the existence of three species in the Calabria region. In particular, our data demonstrate the occurrence of two well-separated species, one in the northern Tyrrhenian area and one in the Calabrian Ionian area, attesting to the validity of D. calabra Galvagni 1968, and the discovery of a new species, D. apollinea sp. nov. Both species appear to be geographically very limited. Dolichopoda calabra occurs in the mountain region between Scalone Pass in the north and the Savuto Valley in the south (a district called ‘Catena Costiera’), whereas D. apollinea sp. nov. appears to be distributed on the eastern slope of Pollino Massif. On the other hand, D. palpata shows a vast distribution, occurring in caves from La Sila in the north to the Aspromonte Massif in the extreme south of Calabria. About 1/3 of the Italian Dolichopoda species are present in this relatively small geographical area, supporting the importance of Calabria as a geographical region characterised by a high level of biodiversity. It shows the maximum values of genetic diversity and species richness in comparison with the rest of the Italian peninsula. This fact could be related to the palaeogeological and palaeoclimatic history of the region, as it was affected by glaciation events and eustatic movements. The combination of these two conditions that occurred during the Pliocene and Pleistocene transformed the Calabria into a vast archipelago of little islands, favouring the isolation of populations and the consequent speciation processes. http://www.zoobank.org/urn:lsid:zoobank.org:pub:AB64936E-EAEF-4730-A517-4F0C11226A94

The effects of augmented reality on consumer responses in mobile shopping: The moderating role of task complexity

Augmented reality (AR) solutions help facilitate consumers' direct examinations, enhancing their shopping experiences in the digital commerce context. This study examines consumer responses to AR in mobile shopping. It investigates the relationships among perceived media richness, interactivity, telepresence, utilitarian and hedonic values, and behavioral intentions. Furthermore, it explores whether these relationships differ depending on consumers’ perceived task complexity. A total of 279 mobile application users participated in the online survey. The participants were guided to answer an online questionnaire after utilizing an AR mobile application to purchase a jewelry product. The findings reveal that media richness and interactivity positively influence telepresence, and telepresence increases behavioral intentions through perceived utilitarian and hedonic values. The effect of interactivity on telepresence and the impact of telepresence on utilitarian value are higher for consumers with low task complexity perception. By contrast, the impact of telepresence on hedonic value is higher for consumers with high task complexity perception. The results suggest practical implications for mobile retailers that apply advanced AR technology in retailing.

Global distribution and richness of terrestrial mammals in tidal marshes

AbstractAimUnderstanding the determinants of species distribution and richness is key to explaining global ecological patterns. We examined the current knowledge about terrestrial mammals in tidal marshes and evaluated whether species richness increased with the marsh surface area and/or with their proximity to the equator and whether species distribution ranges decreased with latitude.LocationGlobal.MethodsWe reviewed the existing literature on terrestrial mammals in tidal marshes. We examined their ecological characteristics (e.g. habitat specialists, native or alien), predicted their variation in species richness and range size along latitude, and explored factors, such as surface area, underlying the global patterns found.ResultsWe found 962 records, describing 125 mammalian species using tidal marshes worldwide, also including several alien species. Most species (95%) were not marsh specialized, and some (18%) were of conservation concern. There were information gaps in South America, Africa, Australia and Asia, and a lack of information about mammalian ecological roles worldwide. We found that species richness increased with surface area, and showed a bimodal pattern peaked between 40° and 50° latitude in each hemisphere. We found no relationship between latitude and species range size.Main conclusionsOur worldwide findings revealed a broader range of tidal marshes inhabited by terrestrial mammals, and higher values of species richness than previously reported. The bimodal pattern of species richness was consistent with the species–area hypothesis, but it also suggested that further studies of species distribution in relation to historical and environmental factors will yield significant insights about variables driving richness in tidal marshes. Despite terrestrial mammal ubiquitous distribution in these ecosystems, there are considerable geographic gaps as regards knowledge about their functional importance and the impact of alien species on tidal marsh functioning. Consequently, extending our research efforts is key to planning the conservation of these coastal ecosystems.

Stability of macroalgal assemblage in the mangrove swamp as an indicator for the health and quality of the Red Sea waters

Mangrove ecosystems support diverse macroalgal assemblages, which are primary producers. Community composition, percentage cover of macroalgae, and physicochemical parameters of seawater were studied at two mangrove areas in the Red Sea, Egypt, from November 2020 to October 2021. In addition, we sought to study changes in the relative densities of macroalgal species of the Red Sea in the two studied areas by using a comparison of our studying data (2020–2021) with previous studies carried out in the same locations in 1997–1998. In order to characterize the spatial variations in algal composition, three 20 m permanent line transects and three 1-m2 quadrates were established at each site. Throughout the duration of the study, the physicochemical parameters varied significantly (p < 0.05) among the seasons and were slightly different between the two sites. Twenty-four species of macroalgae were collected and identified from the studied sites. Approximately 29.2% of these algae (7 species) belong to the Chlorophyta, 45.8% (11 species) to the Ochrophyta (class: Phaeophyceae), and 25% (6 species) to the Rhodophyta. Phaeophyceae species had the highest diversity and richness values at both sites. Comparing the composition of the community during the years 2020–2021 and 1997–1998 yielded no statistically significant differences (p > 0.05). Mangrove trees support a high macroalgae cover, resistant to most environmental circumstances. The macroalgal assemblages' stability in the two studied areas over the two decades shows the health and quality of the Red Sea waters.

Biodiversity and assemblages of molluscs (Gastropoda and Bivalvia) from coastal and deep-sea soft-bottoms off Mauritania

The collections as well as quantitative faunistic and environmental data obtained from 384 bottom-trawling stations during the four Spanish Maurit and two FAO–CCLME expeditions have allowed us, for the first time, to establish the biodiversity distribution patterns and assemblage structures of Mauritanian molluscs. The six surveys prospected the soft-bottoms of the shelf and continental slope between Cape Blanc (20°50′N) and the Senegalese border (16°04′N), from a depth of 19 to 1860 m. Almost 13,000 live specimens collected from 150 stations (40% of the total) belonged to 104 species (37 bivalves and 67 gastropods). Nassariidae and Xenophoridae were the most frequently found families, and the gastropod Nassarius wolffi (Knudsen, 1956) was the most frequent mollusc species in the Mauritanian soft-bottoms. Naticidae and Marginellidae, followed by Muricidae and Pectinidae, were the most diverse families.Depth and depth-related variables, besides the carbonate content of the sediments, are the major environmental factors responsible for the distribution patterns of the ecological descriptors as well as separation of the three main assemblages identified in the shelf, slope and deep-slope. Besides their dissimilarities (β-diversity), the three faunistic assemblages showed significant quantitative differences linked to similar and marked bathymetric trends of diversity, abundance and biomass of both bivalves and gastropods, which strongly decline from the shelf along the slope. Although the mean value of species richness seems uniform along the coast, abundances and biomass are the lowest in the southernmost zone (17°N–16°N), with the highest values, particularly for gastropods, in the Banc d’Arguin region.