Ecological and Physiological Aspects of Primary Production in the Ross Sea

Saggiomo, Vincenzo; Carrada, Gian Carlo; Mangoni, Olga; Marino, Donato; d’Alcalà, Maurizio Ribera

doi:10.1007/978-3-642-59607-0_20

Cited by 13 publications

(9 citation statements)

References 43 publications

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“…Similarly, Antarctic scallop (Adamussium colbecki) populations exhibit maximum biomass at shallower depths, and timing of reproduction is earlier at southern McMurdo Sound sites compared with Terra Nova Bay (Chiantore et al 2001), a pattern attributed to variation in ice cover persistence and predator distribution. A sevenfold increase in primary production from 728-738 S to 758 S is likewise likely related to a southward shortening of photoperiod and longer persistence of pack ice (Saggiomo et al 2000). In deeper coastal waters (100-500 m) from northwestern Ross Sea shelf (718-748 Notes: These disturbances are described more fully in Dayton et al (1970), Clarke (1996), Barnes (1999), Gutt (2001), and Barnes and Conlan (2007).…”

Section: Sea Ice Duration and Extentmentioning

confidence: 95%

The spatial structure of Antarctic biodiversity

Convey

Chown

Clarke

et al. 2014

Ecological Monographs

317

296

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Patterns of environmental spatial structure lie at the heart of the most fundamental and familiar patterns of diversity on Earth. Antarctica contains some of the strongest environmental gradients on the planet and therefore provides an ideal study ground to test hypotheses on the relevance of environmental variability for biodiversity. To answer the pivotal question, “How does spatial variation in physical and biological environmental properties across the Antarctic drive biodiversity?” we have synthesized current knowledge on environmental variability across terrestrial, freshwater, and marine Antarctic biomes and related this to the observed biotic patterns. The most important physical driver of Antarctic terrestrial communities is the availability of liquid water, itself driven by solar irradiance intensity. Patterns of biota distribution are further strongly influenced by the historical development of any given location or region, and by geographical barriers. In freshwater ecosystems, free water is also crucial, with further important influences from salinity, nutrient availability, oxygenation, and characteristics of ice cover and extent. In the marine biome there does not appear to be one major driving force, with the exception of the oceanographic boundary of the Polar Front. At smaller spatial scales, ice cover, ice scour, and salinity gradients are clearly important determinants of diversity at habitat and community level. Stochastic and extreme events remain an important driving force in all environments, particularly in the context of local extinction and colonization or recolonization, as well as that of temporal environmental variability. Our synthesis demonstrates that the Antarctic continent and surrounding oceans provide an ideal study ground to develop new biogeographical models, including life history and physiological traits, and to address questions regarding biological responses to environmental variability and change.

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Section: Sea Ice Duration and Extentmentioning

confidence: 95%

The spatial structure of Antarctic biodiversity

Convey

Chown

Clarke

et al. 2014

Ecological Monographs

317

296

View full text Add to dashboard Cite

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“…Lateral advection of organic matter is supposed to play a significant role in Antarctic coastal and shelf systems (Dayton, 1990;Brey et al, , 1995aArntz et al, 1994), and the open Ross Sea is a potential source of matter laterally advected to Terra Nova Bay. With primary production rates up to 180 g C m À 2 year À 1 (f 8200 kJ m ) and average sedimentation rates of 97% (Fabiano et al, 1997;Saggiomo et al, 2000), the Ross Sea is considered to be the most productive system in the Southern Ocean (Smith et al, 1996).…”

Section: Ecological Significancementioning

confidence: 99%

Age and productivity of the Antarctic scallop, Adamussium colbecki, in Terra Nova Bay (Ross Sea, Antarctica)

Heilmayer

Brey

Chiantore

et al. 2003

Journal of Experimental Marine Biology and Ecology

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Body size, geographical distribution, and biomass make Adamussium colbecki (Smith, 1902) one of the most conspicuous bivalve species in the Antarctic. Based on samples collected in austral summer 1999/2000 in Terra Nova Bay, the annual formation of shell growth bands visible on X-ray photographs was verified by stable isotope analysis. A general von Bertalanffy growth function was fitted to size-at-age data of 25 individuals (H l = 108.86 mm, K = 0.114 year . Gonadal productivity amounted to 70.92 kJ m À 2 year À 1 . Annual somatic and gonad production-to-biomass ratios (P/B) were 0.199 and 0.052, respectively. According to its consumption and production, A. colbecki is likely to play a significant role in the trophic web of Terra Nova Bay. D

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“…The Ross Sea is one of the most productive areas of the Southern Ocean (Smith & Nelson 1985, Nelson et al 1996, Smith & Gordon 1997 and shows high spatial, seasonal and interannual variability in the quantity and quality of the organic matter in the water column (Nelson & Smith 1986, Fabiano et al 1993, Povero et al 2000, due to sea ice dynamics and meteorological conditions (Saggiomo et al 2000, Arrigo & van Djiken 2004. Exceptional events, such as big iceberg calvings (Arrigo et al 2002, Arrigo & van Djiken 2003, can also have an impact on the general circulation and sea ice dynamics.…”

Section: Introductionmentioning

confidence: 99%

Water column features and their relationship with sediments and benthic communities along the Victoria Land coast, Ross Sea, summer 2004

et al. 2006

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Abstract:The northern Victoria Land coastal marine environment was investigated during the late summer 2004, within the framework of the Latitudinal Gradient Project (LGP), to describe the physical, chemical and biological patterns of the water column and their relationship with the pelagic and benthic compartments, and to determine to what extent they change with latitude. A latitudinal gradient from Cape Adare to the Terra Nova Bay-Cape Russell area was determined on the basis of abiotic and trophic factors. Cape Adare had lower values of organic matter (particulate organic carbon < 150 μg l -1 ) available for the benthic communities, but this organic matter had good trophic quality. In Terra Nova Bay the particulate organic matter was quantitatively higher (organic carbon > 400 μg l -1 ), presumably reaching the bottom via faecal pellets, but was more detrital, although its nutritive value was still high (carbon protein content nearly 40%), as confirmed by the great quantity of phytopigments in the sediments (> 4.0 μg g -1 ). The benthic communities changed with latitude as well, partially reflecting the environmental and trophic gradient, but also showing a large within-area variability (except for the Cape Adare area), due to a complex array of variables that did not change with latitude.

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Ecological and Physiological Aspects of Primary Production in the Ross Sea

Cited by 13 publications

References 43 publications

The spatial structure of Antarctic biodiversity

The spatial structure of Antarctic biodiversity

Age and productivity of the Antarctic scallop, Adamussium colbecki, in Terra Nova Bay (Ross Sea, Antarctica)

Water column features and their relationship with sediments and benthic communities along the Victoria Land coast, Ross Sea, summer 2004

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