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Temporal and Spatial Variation of Benthic Intertidal Community of a Sandstone Reef in Pernambuco—Brazil as a Tool to Evaluate bioinvasion

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Journal of Environmental Science and Engineering(A) 2018年第2期7卷 76-81页

作者： Mariana Alves de Guimaraens JoséRoberto de Souza Instituto de Ciências Biológicas Universidade de PernambucoRecife 50100-130PEBrazil Departamento de Zoologia Universidade Federal de PernambucoCidade UniversitáriaRecife 50670-901PernambucoBrazil

In this study,the superior and inferior intertidal areas of hard substrate were sampled during the rainy season(June and August)and dry season(October and December)of 2015 at Piedade *** percent cover of Chthamalus bisinuatus,Brachidontes solisianus,Isognomon bicolor,Ulva *** filamentous green algae were measured with a 20×20 cm quadrat with one hundred *** quadrats were placed randomly at the sampling sites of Piedade ***-way ANOVAs(Analyses of Variance)were used to test the temporal variation of the studied *** bisinuatus occurred only in the superior mesolitoral where they had an increase in percent cover during the dry season,which wasn’t statistically *** solisianus occurred in both superior and inferior levels and had a significant decrease in the superior intertidal during the dry *** bicolor occurred only in the inferior level and decreased to almost zero in the *** *** green filamentous algae had an opposite pattern in the inferior intertidal although only the filamentous algae showed a significant decrease in the dry *** such as Chthamalus bisinuatus resists better the heat and are dominant in the superior intertidal levels of reefs and rocky *** solisianus didn’t change much in the lower intertidal and showed that can coexist with the invasive Isognomon *** the filamentous green showed a decrease in the dry season probably more affected by desiccation than Ulva *** Piedade reef.

关键词： bioinvasion community ecology sandstone reefs Isognomon bicolor

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Mechanisms of invasive population establishment and spread of pinewood nematodes in China

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Science China(Life Sciences) 2009年第6期52卷 587-594页

作者： XIE BingYan1,CHENG XinYue2,SHI Juan3,ZHANG QingWen4,DAI ShuMing1,CHENG Fei Xue2 & LUO YouQing3 1 Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China 2 Beijing Normal University,Beijing 100875,China 3 Beijing Forestry University,Beijing 100083,China 4 Chinese Agricultural University,Beijing 100094,China Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing China Beijing Normal University Beijing China Beijing Forestry University Beijing China Chinese Agricultural University Beijing China

This paper summarizes the results of our study of the pinewood nematode(Bursaphelenchus xylophi-lus).By population genetic analysis,it was determined that there was no genetic bottle caused by the founder effect and genetic drift in the Chinese invasive *** invasions with large amounts of nematodes from different sources led to rich genetic diversity in the invasive *** high genetic diversity in the invasive process may be one of the genetic mechanisms in its successful *** testing interspecies competition,it was shown that,with high fecundity and a strong competitive ability,*** outcompeted the native species *** in the natural ecosystem during the invasion *** displacement may be one of the ecological mechanisms of ***'s *** addition,an unequal interspecific hybridization with intro-gress was in favor of the invasive species which also accelerated the replacement of *** by *** structures,functions and evolutions of a few important genes that are closely related to the ecological adaptation of pinewood nematodes were studied to explore the molecular mechanism of its ecological ***,the resistance and resilience mechanism of the pine ecosystem invaded by pinewood nematodes was also *** results of these studies uncovered a portion of the genetic and ecological mechanisms of PWN's successful invasion and laid a foundation for further study to obtain a comprehensive interpretation of the mechanisms of the nematode *** results also provided a scientific basis for effectively controlling the occurrence and spread of pine wilt disease which is caused by *** aspects requiring further investigation are considered.

关键词： pinewood nematode bioinvasion genetic diversity ecological adaptation resistance resilience

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Shifting chemical defence or novel weapons? A review of defence traits in Agarophyton vermiculophyllum and other invasive seaweeds

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Marine Life Science & Technology 2022年第1期4卷 138-149页

作者： Gaoge Wang Yifei Ren Shasha Wang Minglei Hou Florian Weinberger Institute of Evolution and Marine Biodiversity College of Marine Life SciencesOcean University of ChinaQingdao266003China Marine Ecology Division GEOMAR Helmholtz-Zentrum für Ozeanforschung KielDüsternbrooker Weg 2024105KielGermany

Seaweed bioinvasions increasingly affect coastal environments around the world, which increases the need for predictive models and mitigation strategies. The biotic interactions between seaweed invaders and invaded communities are often considered a key determinant of invasion success and failure and we here revise the current evidence that the capacity of seaweed invaders to deter enemies in newly reached environments correlates with their invasion success. Particularly efficient chemical defences have been described for several of the more problematic seaweed invaders during the last decades. However, confirmed cases in which seaweed invaders confronted un-adapted enemies in newly gained environments with deterrents that were absent from these environments prior to the invasion (so-called “novel weapons”) are scarce, although an increasing number of invasive and non-invasive seaweeds are screened for defence compounds. More evidence exists that seaweeds may adapt defence intensities to changing pressure by biological enemies in newly invaded habitats. However, most of this evidence of shifting defence was gathered with only one particular model seaweed, the Asia-endemic red alga Agarophyton vermiculophyllum, which is particularly accessible for direct comparisons of native and non-native populations in common garden experiments. A. vermiculophyllum interacts with consumers, epibionts and bacterial pathogens and in most of these interactions, non-native populations have rather gained than lost defensive capacity relative to native conspecifics. The increases in the few examined cases were due to an increased production of broad-spectrum deterrents and the relative scarcity of specialized deterrents perhaps reflects the circumstance that seaweed consumers and epibionts are overwhelmingly generalists.

关键词： Agarophyton vermiculophyllum bioinvasion Chemical defence Novel weapons hypothesis Shifting defence hypothesis

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