Repopulation techniques for Macrocystis integrifolia (Phaeophyceae: Laminariales) in Atacama, Chile

Westermeier, Renato; Murúa, Pedro; Patiño, David J.; Muñoz, Liliana; Atero, Carlos; Müller, Dieter G.

Repopulation techniques for Macrocystis integrifolia (Phaeophyceae: Laminariales) in Atacama, Chile

Dateien

Westermeier_0-276260.pdfGröße: 845.61 KBDownloads: 535

Datum

2014

Autor:innen

Westermeier, Renato

Murúa, Pedro

Patiño, David J.

Muñoz, Liliana

Atero, Carlos

Müller, Dieter G.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Applied Phycology. 2014, 26(1), pp. 511-518. ISSN 0921-8971. eISSN 1573-5176. Available under: doi: 10.1007/s10811-013-0069-5

Zusammenfassung

The giant kelp Macrocystis (integrifolia) has been intensely harvested in northern Chile for several years. In order to prevent a future disaster, we developed two different techniques for restoration of damaged Macrocystis integrifolia beds in the Atacama region of Chile. (1) Explantation: Laboratory-grown juvenile sporophytes were fixed to different substrata (plastic grids, ceramic plates, or boulders) by elastic bands or fast-drying glue (cyanoacrylate). Explants reached 150–200 cm in length within 5 months (relative growth rate ≈ 1.3–1.7 % day⁻¹), and reproductive maturity in 5–7 months. (2) Seeding of spores: Mature sporophylls were placed at 8 m depth on the sea bottom, supported by cotton gauze sleeves attached to boulders of different origin. Sixty percent of clean boulders collected on the beach produced up to seven recruits per boulder. In contrast, 20 % of the boulders from the sea bottom, colonized by epibionts, showed up to two recruits. Relative growth rates, however, were similar (≈2.4–2.6 % day⁻¹). Practical applications of our findings are: laboratory-produced juvenile sporophytes fixed to various substrata by elastic bands or cyanoacrylate glue can be used to colonize rocks or artificial reefs. In cases, where laboratory-grown seedlings are unavailable, mature sporophylls from nearby Macrocystis beds can be used to establish new recruits on rocky substrata.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Atacama, Chile, Cotton gauze sleeve, Cyanoacrylate glue, Elastic band, Macrocystis integrifolia, Repopulation, Sporophyll

Zitieren

ISO 690

WESTERMEIER, Renato, Pedro MURÚA, David J. PATIÑO, Liliana MUÑOZ, Carlos ATERO, Dieter G. MÜLLER, 2014. Repopulation techniques for Macrocystis integrifolia (Phaeophyceae: Laminariales) in Atacama, Chile. In: Journal of Applied Phycology. 2014, 26(1), pp. 511-518. ISSN 0921-8971. eISSN 1573-5176. Available under: doi: 10.1007/s10811-013-0069-5

BibTex

@article{Westermeier2014Repop-30374,
  year={2014},
  doi={10.1007/s10811-013-0069-5},
  title={Repopulation techniques for Macrocystis integrifolia (Phaeophyceae: Laminariales) in Atacama, Chile},
  number={1},
  volume={26},
  issn={0921-8971},
  journal={Journal of Applied Phycology},
  pages={511--518},
  author={Westermeier, Renato and Murúa, Pedro and Patiño, David J. and Muñoz, Liliana and Atero, Carlos and Müller, Dieter G.}
}

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