In situ growth and chemical composition of the giant kelp, Macrocystis pyrifera: response to temporal changes in ambient nutrient availability

Zimmerman, Richard C.; Kremer, James N.

doi:10.3354/meps027277

Cited by 144 publications

(101 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although NO 3 -levels at Brighton Beach are fairly low, concentrations were never below detection limits, as has been observed during spring/summer in northern hemisphere regions such as the NW Pacific (Germann et al 1987, Thomas & Harrison 1987, Thomas et al 1987a) and southern California (Wheeler & North 1981, Zimmerman & Kremer 1986. In New Zealand, seawater NO 3 -concentrations and seasonal fluctuations at Brighton Beach were similar to those reported for 2 nearby locations -Kuri Bush, 12 km SW of Brighton (Brown et al 1990) and Aquarium Point in Otago Harbour, 28 km NE (Brown et al 1997) -and for Mokohinau Islands in NE New Zealand (Taylor et al 1998), indicating that Brighton Beach is not locally or regionally unique in its low seawater NO 3 -.…”

Section: Ambient and Experimental N Concentrationsmentioning

confidence: 93%

Nitrogen ecophysiology of intertidal seaweeds from New Zealand: N uptake, storage and utilisation in relation to shore position and season

Phillips¹,

Hurd²

2003

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Section: Ambient and Experimental N Concentrationsmentioning

confidence: 93%

Nitrogen ecophysiology of intertidal seaweeds from New Zealand: N uptake, storage and utilisation in relation to shore position and season

Phillips¹,

Hurd²

2003

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…The biomass of Macrocystis can be limited by wave disturbance (Graham et al 2007;) and nutrients (Jackson 1977;Gerard 1982), particularly during El Niñ o events when resulting thermal stratification can suppress Macrocystis canopies for multiple years (Zimmerman and Kremer 1986;Dayton et al 1999). At least some understory algal species appear to be less susceptible to nutrient limitation during El Niñ o events, possibly due to lower nutrient requirements or resistance to low-nutrient conditions, combined with lower temperatures and higher nutrient concentrations near the bottom (Dayton et al 1999).…”

Section: Discussionmentioning

confidence: 99%

Partitioning of primary production among giant kelp (Macrocystis pyrifera), understory macroalgae, and phytoplankton on a temperate reef

Miller¹,

Reed²,

Brzezinski³

2010

Limnology & Oceanography

112

View full text Add to dashboard Cite

We experimentally investigated the response of phytoplankton and understory macroalgae to canopies of giant kelp, Macrocystis pyrifera, by following changes in their biomass and net primary production over 17 months in 600-m 2 plots where giant kelp was continually removed or left intact and allowed to vary naturally. Production by phytoplankton was two times greater and understory algae five times greater where Macrocystis was removed relative to the intact forest. Understory biomass, but not phytoplankton biomass, was suppressed inside the forest, leading to a higher magnitude of effect on net primary production (NPP) by understory relative to phytoplankton. Following a natural decline of the Macrocystis canopy by winter storms, understory macroalgae and phytoplankton increased production in the Macrocystis control plot. This response was delayed for both groups, with phytoplankton production increasing in spring and understory increasing later during summer. The longer delay for understory macroalgae was likely due to restrictions in the timing of macroalgal recruitment and their slower growth rates compared with phytoplankton and with increased competition for light resulting from greater light absorption by the spring phytoplankton bloom. Surprisingly, total ecosystem production that included NPP by Macrocystis, phytoplankton, and understory algae did not differ between the Macrocystis control and removal plots for much of the study. NPP by understory algae, which comprised the bulk of the ecosystem NPP in the Macrocystis removal plot, can compensate to varying degrees for the loss of Macrocystis production following its removal by winter storms.

show abstract

“…This pattern represents a classic photoacclimation response common to shadeadapted algae. The P/R ratio was slightly higher in this deep-water population than in the intertidal one studied by Germann (1989); however, it was not higher than in other kelps such as Macrocystis pyrifera (Zimmerman & Kremer 1986, Table 4). …”

Section: Discussionmentioning

confidence: 89%

Dynamics of carbon allocation in a deep-water population of the deciduous kelp Pleurophycus gardneri (Laminariales)

Dominik¹,

Zimmerman²

2006

Mar. Ecol. Prog. Ser.

Self Cite

View full text Add to dashboard Cite

Pleurophycus gardneri (Laminariales) is common in the low intertidal of the Northeast Pacific, but dominates many deep (30 to 40 m) rocky reefs in central California. Seasonal dynamics of productivity and resource allocation of a deep-water population of this deciduous, stipitate kelp were studied to understand how blade abscission affects the annual carbon budget. Patterns of growth, metabolism, and carbon storage and mobilization were measured monthly for 1 yr relative to in situ light and temperature, and used to model the annual carbon budget. The resulting carbon budget was used to determine if blade abscission effectively reduced respiratory demand during the winter period of low light availability. Metabolic properties (photosynthesis, photoacclimation, and respiration) were seasonally constant and showed evidence of photoacclimation to this deep, low-light environment. Blades grew between February and July, followed by senescence and sloughing from August to December. Concentrations of laminaran and mannitol increased in the blades from the onset of sloughing in August until just prior to blade abscission in mid-December, suggesting translocation of these carbohydrates may have occurred from the blade to the stipe and holdfast. Carbon budget estimates revealed that scalar irradiance measures overestimated the light available for photosynthesis of these paddle-shaped kelp blades by 50 to 75%. The calculations also revealed that blade retention allowed for the maintenance of positive carbon balance throughout the year. Thus, conservation of the internal carbon reserve for metabolic survival during the low-light period does not appear to be a viable explanation for the deciduous life history of P. gardneri. Abscission may reduce hydrodynamic drag, thus minimizing the probability of dislodgment of entire plants during winter storm events, or promote spore dispersal as abscised blades and sori drift away from the parent holdfast. KEY WORDS: Carbon budget · Photosynthesis · Abscission · Light acclimation Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 309: [143][144][145][146][147][148][149][150][151][152][153][154][155][156][157] 2006 excluded by light limitation (Edwards 1998). However, there is no clear evidence that the newly settled algae undergo a seasonally adjusted metabolic response to light availability. In northern latitudes where light limitation is seasonally predictable, perennial kelps have evolved a variety of physiological mechanisms that allow them to survive through summer periods of nutrient limitation and winter periods of light limitation (Gagne et al. 1982). Laminaria solidungula, for example, uses stored carbohydrates accumulated during summer to complete 90% of its annual linear blade growth during the virtual darkness of the Arctic winter (Mann 1973, Chapman & Craigie 1977, 1978, Dunton & Schell 1986. Another mechanism may involve cellular photoacclimation to increased photosynthetic efficiency in low-light environments, thr...

show abstract

In situ growth and chemical composition of the giant kelp, Macrocystis pyrifera: response to temporal changes in ambient nutrient availability

Cited by 144 publications

References 34 publications

Nitrogen ecophysiology of intertidal seaweeds from New Zealand: N uptake, storage and utilisation in relation to shore position and season

Nitrogen ecophysiology of intertidal seaweeds from New Zealand: N uptake, storage and utilisation in relation to shore position and season

Partitioning of primary production among giant kelp (Macrocystis pyrifera), understory macroalgae, and phytoplankton on a temperate reef

Dynamics of carbon allocation in a deep-water population of the deciduous kelp Pleurophycus gardneri (Laminariales)

Contact Info

Product

Resources

About