Experimental transplants of the large kelp Lessonia nigrescens (Phaeophyceae) in high-energy wave exposed rocky intertidal habitats of northern Chile: Experimental, restoration and management applications

Correa, Juan A.; Lagos, Nelson A.; Medina, Matías H.; Castilla, Juan Carlos; Cerda, Mauricio; Ramírez, M. A.; Martínez, Enrique A.; Faugeron, Sylvain; Andrade, Santiago; Pinto, Raquel; Contreras, Loretto

doi:10.1016/j.jembe.2006.02.010

Cited by 49 publications

(47 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Newly formed haptera established good fixation, growth proceeded to reproductive maturity. Released spores colonized adjacent areas in a similar manner as reported by Correa et al (2006) for L. nigrescens transplants and by Westermeier et al (2013a, b) for M. integrifolia outplants, transplants, and holdfast fragments. Another feature of M. integrifolia, its elaborate stoloniferous holdfast system, easily regenerates whole thalli from cut-out fragments.…”

Section: Discussionsupporting

confidence: 83%

“…Larger individuals exhibit more resilience and better survival than younger stages, which are subject to higher mortality and greater risks of detachment (Hernandez-Carmona et al 2000;Druehl 1978). Similarly, transplants are better acclimated than explants from hatchery culture and may exhibit superior results for restoration purposes (Correa et al 2006;Westermeier et al 2012b, c). In our present study, however, all trials with explantation of 10-cm seedlings produced in the laboratory were successful.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, Westermeier et al (2013a) found that M. integrifolia holdfast fragments easily regenerate and the authors suggested a technique on this basis for recovery projects of kelp beds. Only few reports describe repopulation experiments with the intertidal kelp Lessonia nigrescens in Chile (Vásquez and Tala 1995;Correa et al 2006), and no studies are known for M. integrifolia. Thus, our present report is the first attempt in Chile to elaborate techniques for repopulation of this kelp species via explantation of laboratory-grown juvenile seedlings and spore seeding by sporophylls from nearby kelp stands.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2013

View full text Add to dashboard Cite

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 laboratorygrown seedlings are unavailable, mature sporophylls from nearby Macrocystis beds can be used to establish new recruits on rocky substrata.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Transplant experiments would be needed to evaluate if hollow stipes can be induced in individuals from geographically separated populations. Such transplants have been already performed to test heavy metal tolerance in the intertidal kelp Lessonia nigrescens on the north Chilean Pacific coasts (Correa et al 2006). The suggested evaluation of genetic differences for E. arborea even at short spatial scales could be useful not only for taxonomical reasons but also for stock management strategies in harvested populations in the cost of the North-east Pacific.…”

Section: Discussionmentioning

confidence: 99%

Morphological variability of intertidal Eisenia arborea (Laminariales, Ochrophyta) at Punta Eugenia, Baja California Sur

Parada¹,

Riosmena‐Rodríguez²,

Martínez³

et al. 2012

ALGAE

View full text Add to dashboard Cite

Water motion is one of the main drivers in morphological variability in species within de order Laminariales, and most of our current knowledge is based on subtidal populations. Eisenia arborea is a dominant kelp species in the North Pacific, widely distributed along the Baja California Peninsula from mid intertidal down to subtidal areas. This species presents great variability in the intertidal zone but it has not been yet evaluated such variability according to wave exposure. The present work also identifies the spatial / temporal variation, particularly respect to the presence of stipes without medulla (hollow stipes) a feature common among other brown seaweeds. We evaluated the effects of wave action in morphological variation of intertidal Eisenia arborea (Laminariales, Ochrophyta) at Punta Eugenia. The spatial and temporal variation sampling was surveyed between February, May, July, and August 2004 in the intertidal of Punta Eugenia, Baja California Sur. Our results have shown that exposed sites correlate with increased length and width of stipes as compared to more protected sites. Hollow stipes frequency changed more in association with temporal variation than with spatial heterogeneity suggesting nutrient limitation for thalli development. Our results suggest that Eisenia arborea compensate by morphological modifications the stress of living in the intertidal zone by showing larger stipes. Hollow stipes might be are also a mechanical adaptation to increase survival in high energy environments.

show abstract

“…There are no literature reports on vegetative propagation in Macrocystis, although some authors discuss this process as a main mechanism for population stability (Lobban 1978;Graham et al 2007). Some studies on kelp repopulation projects and mariculture trials showed that whole thalli could be successfully transplanted to rocks or longlines (Correa et al 2006;Graham 2008;Westermeier et al 2006Westermeier et al , 2011, reflecting high capacity of kelp reattachment.…”

Section: Introductionmentioning

confidence: 99%

Utilization of holdfast fragments for vegetative propagation of Macrocystis integrifolia in Atacama, Northern Chile

et al. 2012

View full text Add to dashboard Cite

We attempted to propagate Macrocystis integrifo lia (giant kelp) by fragmentation and regeneration of holdfasts, which consist of creeping stolons with lateral haptera. Stolons from a natural kelp population in Bahia Chasco (Atacama, North Chile) were cut into fragments, each containing one or more lateral stipe and frond initials. Fragments were attached to longlines with elastic bands. We used two additional types of inoculants as controls: (1) natural recruits from the local parent population and (2) laboratory-cultured young sporophytes. Length, reproductive phenology, and mortality were determined monthly. Our results confirmed the feasibility of M. integrifolia propagation by reattachment of stolon fragments, and we obtained up to eight new individuals from one parent holdfast. Individuals from holdfast regeneration formed sporangial sori 3 months earlier than control specimens from recruits and laboratory culture, while all three types gave similar values for mortality. Holdfast morphology of regenerates differed strongly depending on their origin: stolon fragments continued growth and developed new haptera except in the cut surfaces, natural recruits formed typical M. integrifolia holdfast morphs, and sporophytes originating from laboratory culture produced minor stolons with many haptera. Implications of our results on ecology, repopulation, and aquaculture are discussed.

show abstract

Experimental transplants of the large kelp Lessonia nigrescens (Phaeophyceae) in high-energy wave exposed rocky intertidal habitats of northern Chile: Experimental, restoration and management applications

Cited by 49 publications

References 20 publications

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

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

Morphological variability of intertidal Eisenia arborea (Laminariales, Ochrophyta) at Punta Eugenia, Baja California Sur

Utilization of holdfast fragments for vegetative propagation of Macrocystis integrifolia in Atacama, Northern Chile

Contact Info

Product

Resources

About