ALGAE

  • 제34권2호
  • /
  • Pages.99-109
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  • 2019
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  • 1226-2617(pISSN)
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  • 2093-0860(eISSN)
한국조류학회(藻類) (The Korean Society of Phycology)
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Trait-based algal community assembly associated with Pectinatella magnifica (Bryozoa, Phylactolaemata)

  • Kim, Hyo Gyeom (Department of Biological Sciences, Pusan National University) ;
  • Lee, Hak Young (Department of Biological Sciences, Chonnam National University) ;
  • Joo, Gea-Jae (Department of Biological Sciences, Pusan National University)
  • 투고 : 2018.12.14
  • 심사 : 2019.05.03
  • 발행 : 2019.06.15
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초록

Habitat-forming species increase spatial complexity and alter local environmental conditions, often facilitating the assembly of plants and animals. We conducted a trait-based approach to algal assemblages associated with the freshwater bryozoan, Pectinatella magnifica. Association with algae leads to the inner bodies of the bryozoans being colored green; this is frequently observed in the large rivers of South Korea. We collected the green-colored gelatinous matrices and phytoplankton from waterbodies of the two main rivers in South Korea. Algal assemblages within the colonies and in the waterbodies were compared using the three diversity indices (richness, diversity, and dominance), and the composition of functional groups (FGs) and morphologically based functional groups (MBFGs) between the colonies within and outside of P. magnifica colonies. The most dominant and common species within the colonies were Oscillatoria kawamurae and Pseudanabaena catenata, both of which were assigned to the same FG (codon S1). Of the algal assemblages within the colonies, the dominance was higher, while the richness and diversity were lower, than those in the waterbodies. There was variation in the compositions of FGs and MBFGs in the waterbodies outside the colonies. Total nitrogen and orthophosphate led to dominance, and were significant factors for the variation in FGs in the waterbodies, whereas there were no such significant factors within the colonies. This trait-based approach to the community structure of associated algae provides the status and habitat gradient of these communities, which are stable, isolated, and consistent with the overgrowth of shade-adapted tychoplanktonic cyanobacteria.

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과제정보

연구 과제 주관 기관 : National Research Foundation (NRF)

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피인용 문헌

  1. Drivers shaping episodic and gradual changes in phytoplankton community succession: Taxonomic versus functional groups vol.734, 2019, https://doi.org/10.1016/j.scitotenv.2020.138940