The genus<b><i>Laminaria sensu lato</i></b>: recent insights and developments

Bartsch, Inka; Wiencke, Christian; Bischof, Kai; Buchholz, Cornelia; Buck, Bela H.; Eggert, Anja; Feuerpfeil, Peter; Hanelt, Dieter; Jacobsen, Sabine; Karez, Rolf; Karsten, Ulf; Molis, Markus; Roleda, Michael Y.; Schubert, Hendrik; Schumann, Rhena; Valentin, Klaus; Weinberger, Florian; Wiese, Jutta

doi:10.1080/09670260701711376

Cited by 382 publications

(419 citation statements)

References 628 publications

Supporting

Mentioning

395

Contrasting

Unclassified

Order By: Relevance

“…This paradigm has been used in textbooks without being tested properly. In a recent review, Bartsch et al (2008) refer to the endoparasite Echinomermella matsi (Hagen 1987) and the wolfish (Anarhichas lupus (Linnaeus, 1758), Sivertsen & Bjørge 1980) as controlling predators of sea urchin populations along the Norwegian coast, although evidence for their importance is lacking and has been questioned (see Stien et al 1995Stien et al , 1998Anon. 2002).…”

Section: Resultsmentioning

confidence: 99%

“…Blooms of sea urchins and subsequent loss of kelp forests usually attract much attention and are important issues for nature and resource management, and have been intensely studied in the NW Atlantic and in the NE Pacific (Pringle 1986;Elner & Vadas 1990;Steneck et al 2004). Although understanding of the importance of the kelp forest of the NE Atlantic has increased (Mann 2000;Christie et al 2003;Norderhaug et al 2005;Bartsch et al 2008), the largest affected area of the Atlantic has largely been ignored by the authorities: approximately 2000 km 2 of kelp forest along the Norwegian and Russian coast was grazed in the early 1970s and the sea urchin-dominated barren grounds have persisted since.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sea urchin grazing and kelp re-vegetation in the NE Atlantic

Norderhaug

Christie

2009

Marine Biology Research

122

114

View full text Add to dashboard Cite

Small-scale grazing events where sea urchins have grazed kelp forests to barren grounds have been reported all along the NE Atlantic coast. One large-scale event has been reported where kelp forests along the Norwegian and Russian coast were grazed by sea urchins during the early 1970s. The barren ground area has persisted since. Different theories to explain the grazing event have been presented. This paper seeks to sort and summarize earlier published papers and national reports and to critically examine the most important theories presented to explain the grazing event. The conclusion is that the reason for the event is unknown and it is too late to find causes 40 years after it took place. However, new data and new geographical analysis tools provide insight into the extent and consequences of this dramatic event, and show re-vegetation of kelp forests in the southernmost area. Emphasis in future studies should be given to understand the reasons for shifts between the two ecosystem states and take advantage of the ongoing shift. Such basic ecological knowledge could provide an important basis for better understanding the system and further, to understand the extent to which other observed largescale changes (e.g. climatic changes, fish stock reductions) affect kelp forestÁsea urchin interaction.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sea urchin grazing and kelp re-vegetation in the NE Atlantic

Norderhaug

Christie

2009

Marine Biology Research

122

114

View full text Add to dashboard Cite

show abstract

“…In the west, the increase of number of warm days potentially accounts for the sudden kelp decline. The other three SST characteristics investigated might also have contributed to the decline in the west, despite no thresholds have been surpassed, because experimentally determined threshold temperatures might vary under natural conditions as multiple factors play a role in the resilience of the kelp species (Bartsch et al, 2008). Moreover, the interactions of these stressors potentially led to a critical situation west of Cape Penas.…”

Section: Potential Causes Of the Kelp Declinementioning

confidence: 99%

Climate driven changes in subtidal kelp forest communities in NW Spain

Voerman

Llera²,

Rico

2013

Marine Environmental Research

103

View full text Add to dashboard Cite

a b s t r a c tReconstructions suggest a massive decline of nearly 1400 ha of kelp forest in North Western Spain in 2007. In line with global rising temperatures, we hypothesized that Sea Surface Temperature (SST) surpassed a lethal threshold for kelp. We examined whether changes in SST correlated to the proposed decline in kelp forest. All investigated SST characteristics suggested to affect kelp abundance increased significantly during the past thirty years, reaching extreme values during the last decade. In addition over the past two decades, the landscape formerly dominated by both cold and warm temperate canopy forming and understory species changed to one dominated by warm temperate understory species, resulting in a loss of vertical community structure. Fisheries landing data of kelp associated species was used to support the suggested change in kelp abundance. Subsequent recovery of the kelp appears to be occurring in deeper waters.

show abstract

“…twine, nets, ribbons, sheets) which are later on deployed at sea for further growth under natural conditions. Although the production of spores in natural kelp populations is seasonal and species-specific (Bartsch et al 2008), sorus (reproductive structure) formation can be induced artificially by, for example, controlling the light regimes provided to adult sporophytes. In this way, viable sporelings can be produced at all seasons (Forbord et al 2012).…”

Section: Status Of Seaweed Aquaculture In Norwaymentioning

confidence: 99%

“…fiskeridir.no/default.aspx?gui=1&lang=2) thus, are likely to directly benefit from nutrient releases originating from fish farming activities. The cultivation cycle of the kelp species is based on their life cycle (see Bartsch et al 2008 for more details on the life cycle of the Laminariales). Sporelings are grown from microscopic stages i.e.…”

Section: Status Of Seaweed Aquaculture In Norwaymentioning

confidence: 99%

Seaweed aquaculture in Norway: recent industrial developments and future perspectives

2017

View full text Add to dashboard Cite

The use of cultivated seaweeds as a feedstock for multiple industrial applications has gained increasing interest in the Western World over the past decades. Norway has an extensive coastline and a well-established aquaculture sector offering suitable preconditions for developing large-scale cultivation of seaweed biomass both in monoculture and in Integrated Multi-Trophic Aquaculture (IMTA) systems. Recent efforts from research, industry and public authorities have been committed to develop a Norwegian bio-economy based on cultivated seaweed, focusing on cultivation and processing of the biomass. This review reports on the status of seaweed aquaculture in Norway, supported by production data collected since the delivery of the first commercial cultivation permits at sea in 2014. Although novel product developments are currently limited, future industrial perspectives based on cultivated biomass are being discussed. Upscaling from experimental cultivation schemes to commercial production requires a thorough assessment of the risks and benefits associated with seaweed aquaculture, as well as the development of a regulative framework adapted to this industry. Issues associated with upscaling the macroalgal production that needs to be addressed includes (i) genetic interactions between cultivated and wild crops, (ii) impacts of seaweed cultivation on surrounding ecosystems, (iii) epiphytes and diseases, (iv) area utilization and (v) threats from climate change. Addressing these issues and adapting production practices will ensure the environmental and economic sustainability of an emerging industry based on cultivated seaweed biomass in Norway.

show abstract

The genusLaminaria sensu lato: recent insights and developments

Cited by 382 publications

References 628 publications

Sea urchin grazing and kelp re-vegetation in the NE Atlantic

Sea urchin grazing and kelp re-vegetation in the NE Atlantic

Climate driven changes in subtidal kelp forest communities in NW Spain

Seaweed aquaculture in Norway: recent industrial developments and future perspectives

Contact Info

Product

Resources

About