Distribution of resources in the coastal waters of Qingdao and its relationship with environmental factors.

, with strong reproductive capacity and rapid growth, is an important nearshore fishing target in Qingdao. The distribution characteristics of resources in Qingdao and their influencing factors are largely unknown, which is detrimental to the protection and utilization of these resources. Based on the bottom trawl survey data of fishery resources carried out in the coastal waters of Qingdao during the summer and autumn seasons from 2018 to 2022, in combination with the data of environmental and spatial factors such as bottom seawater temperature, bottom seawater salinity, water depth, longitude and latitude, we analyzed the spatio-temporal variations of resources in this sea area, and the relationship between the distribution of resources and related factors using the random forest model.

Spatio-temporal variations in functional redundancy of fish communities in the Haizhou Bay and its adjacent waters.

To explore the functional redundancy and better understand the stability of fish community in the Haizhou Bay and its adjacent waters, we examined the temporal and spatial variations in functional redundancy of fish community and the influencing factors using functional redundancy index (FR) and correlation analysis based on fish resource survey data in spring and autumn from 2013 to 2023. The results showed that the average value of FR was 9.39 in autumn and was 8.

Influencing factors of predation on five keystone prey species in Haizhou Bay based on Delta-GAMMs.

Trophic dynamics is one of the major regulators of fishery production in marine ecosystems, which is important for the implementation of ecosystem-based fisheries management. Based on data collected form bottom trawl surveys in Haizhou Bay and adjacent waters during autumn of 2011 and 2018, Delta-GAMMs (Delta-generalized additive mixed models) were constructed to evaluate the effects of biotic and abiotic factors on the predation of five key prey species (including , , spp., , and ) in the Haizhou Bay.

[Feeding ecology of in Haizhou Bay based on linear mixed model].

Many traditional economic marine fishery resources have been declining in the coastal waters of China. has become one of the dominant species in Haizhou Bay and some other coastal areas of China, playing an important role in marine food webs. We analyzed the feeding strategy of based on the bottom trawl surveys conducted in the Haizhou Bay and adjacent waters in spring and autumn of 2011 and 2013-2016.

[Spatio-temporal variations in species composition and diversity of fish communities in the adjacent waters of Changshan Islands, China].

In order to understand species composition and diversity of fish communities in the ecotone between the Yellow Sea and Bohai Sea, we examined species composition and temporal and spatial variations of fish species diversity using the relative importance index (IRI), species diversity index and dominance curve based on bottom trawl survey data of fish resources in the adjacent waters of the Changshan Islands in October 2016, January, May and August 2017. The results showed that 77 fish species were captured, mainly temperate water fishes, demersal fishes and migratory fishes. The dominant species exhibited obvious seasonal variation.

[Sampling design optimization based on estimation accuracy and survey cost for fishery-independent surveys].

Optimization of sampling design can reduce survey cost, ensure the accuracy of survey data, and get the maximum benefit of survey design. In this study, survey voyage was added into sampling survey design optimization as the evaluation index to quantify the survey cost. Computer simulation and resampling technique were used to simulate the survey plan.

[Study on Soil Elements Detection with Laser-Induced Breakdown Spectroscopy: A Review].

Laser-induced breakdown spectroscopy (LIBS), as a kind of atomic emission spectroscopy, has been considered to be a future new tool for chemical analysis due to its unique features, such as no need of sample preparation, stand-off or remote analysis. What's more it can achieve fast and multi-element analysis. Therefore, LIBS technology is regarded as a future "SurperStar" in the field of chemical analysis and green analytical techniques.

[Fast Detection of Camellia Sinensis Growth Process and Tea Quality Informations with Spectral Technology: A Review].

The research achievements and trends of spectral technology in fast detection of Camellia sinensis growth process information and tea quality information were being reviewed. Spectral technology is a kind of fast, nondestructive, efficient detection technology, which mainly contains infrared spectroscopy, fluorescence spectroscopy, Raman spectroscopy and mass spectroscopy. The rapid detection of Camellia sinensis growth process information and tea quality is helpful to realize the informatization and automation of tea production and ensure the tea quality and safety.

[Spatial pattern of fish assemblage and the relationship with environmental factors in Yellow River Estuary and its adjacent waters in summer].

The fish community structure and its relationship with the environment in the Yellow River Estuary and its adjacent waters were studied using the data collected from bottom trawl surveys in summer (June, July, August) , 2013. A total of 44 fish species were sampled in the survey, belonging to 40 genera, 25 families, and 11 orders, and mainly composed of warm temperate and demersal fishes. Cluster analysis showed that fish assemblage in Yellow River Estuary in summer could be divided into three groups.

[Monthly changes and related affecting factors in community structure and diversity of the crab assemblages in central Jiaozhou Bay, China].

Based on the monthly bottom trawl surveys in the central area of Jiaozhou Bay from September 2008 to August 2009, monthly changes and related affecting factors in community structure and diversity of the crab assemblages were examined using index of relative importance, ecological diversity indices, multivariate statistical analysis. In total, 18 crab species were caught and they belonged to 11 families, 17 genera. The relative abundance of crab varied dramatically among months, which was high in June, July and August.

[Fish community structure and its relationships with environmental factors in Haizhou Bay and adjacent waters of East China in winter].

Based on the bottom trawl survey and environmental investigation data in December 2011, and by using species diversity indices and multi-element analysis, this paper studied the species composition, species diversity, and spatial pattern of fish community as well as their relationships with environmental factors in Haizhou Bay and adjacent waters. A total of 60 fish species were captured, belonging to 51 genera, 34 families, and 10 orders, and mainly composed of warm temperature and warm water demersal fishes. The Margalef species richness index, Shannon diversity index, and Pielou evenness index ranged from 1.

[Feeding ecology of Amblychaeturichthys hexanema in Jiaozhou Bay, China].

From February to November 2011, four seasonal bottom trawl surveys were conducted in the Jiaozhou Bay of China. A total of 624 Amblychaeturichthys hexanema individuals were collected to analyze their stomach contents, with the feeding ecology of A. hexanema studied.

[Macrozoobenthos functional groups in intertidal flat of northwest Jiaozhou Bay].

Based on the survey of macrozoobenthos at 35 locations of 7 sections in the intertidal flat of northwest Jiaozhou Bay in February, May, August, and November 2009, three zones including high tidal zone (A), mid tidal zone (B, C, and D), and low tidal zone (E) were selected to study the functional groups of macrozoobenthos in the flat. A total of 71 macrozoobenthos species were recorded, most of which were of mollusk (31 species), polychaete (20 species), and crustacean (14 species). The species number in A, B, C, D, and E was 26, 33, 35, 38, and 31, respectively.

[Characteristics of fish community structure in the central Jiaozhou Bay in spring and summer].

Based on the bottom trawl surveys in central Jiaozhou Bay from March to August 2009, and by using ecological diversity indices and canonical correspondence analysis (CCA), this paper studied the species composition of fish community, and analyzed the species diversity and its relationships with the environmental factors in the Bay in spring and summer. A total of 43 fish species were captured, belonging to 8 orders, 24 families and 38 genera. The number of fish species increased with increasing bottom water temperature.