Carbon Balance Under a Changing Light Environment

Deregibus, Dolores; Zacher, Katharina; Bartsch, Inka; Campana, Gabriela Laura; Momo, Fernando; Wiencke, Christian; Gómez, Iván; Quartino, María Liliana

doi:10.1007/978-3-030-39448-6_9

Cited by 8 publications

(6 citation statements)

References 85 publications

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“…One recently observed change is the release of new ice-free areas induced by glacial retreat (Lagger et al, 2018). This kind of disturbance could produce an increase on macroalgal production by the colonization of new ice-free hard bottom areas, but also increase the amount of suspended particulate matter with negative effects on photosynthesis rates (Quartino et al, 2013;Deregibus et al, 2016). Changes on macroalgae assemblage may be reflected in the Hard Bottom food web and indirectly in the Soft Bottom web by changes on the detritus stock as observed in other Antarctic food webs (Dunton 2001;Norkko et al, 2004;Norkko et al, 2007;Gillies et al, 2012).…”

Section: Multidimensional Stability Proxies and Their Relevance For Local Climate Change Impactsmentioning

confidence: 99%

Green vs brown food web: Effects of habitat type on multidimensional stability proxies for a highly-resolved Antarctic food web

et al. 2020

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Section: Multidimensional Stability Proxies and Their Relevance For Local Climate Change Impactsmentioning

confidence: 99%

Green vs brown food web: Effects of habitat type on multidimensional stability proxies for a highly-resolved Antarctic food web

et al. 2020

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“…El Niño years) when late disintegration of coastal sea ice stabilizes surface stratification before the onset of glacial discharge flow [16]. Only few macroalgal species colonizing clear water areas in the outer cove are found on the newly ice-free hard substrates in glacial vicinity; these species need to be adapted to low light conditions to manage with only a short growth period in early spring [27]. Species adapted to low light are also typical representatives of the pelagic microbial pro-and eukaryote communities (see [28] for review).…”

Section: Weddell Seamentioning

confidence: 99%

Anatomy of a glacial meltwater discharge event in an Antarctic cove

Meredith

Falk

Bers

et al. 2018

Phil. Trans. R. Soc. A.

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Glacial meltwater discharge from Antarctica is a key influence on the marine environment, impacting ocean circulation, sea level and productivity of the pelagic and benthic ecosystems. The responses elicited depend strongly on the characteristics of the meltwater releases, including timing, spatial structure and geochemical composition. Here we use isotopic tracers to reveal the time-varying pattern of meltwater during a discharge event from the Fourcade Glacier into Potter Cove, northern Antarctic Peninsula. The discharge is strongly dependent on local air temperature, and accumulates into an extremely thin, buoyant layer at the surface. This layer showed evidence of elevated turbidity, and responded rapidly to changes in atmospherically driven circulation to generate a strongly pulsed outflow from the cove to the broader ocean. These characteristics contrast with those further south along the Peninsula, where strong glacial frontal ablation is driven oceanographically by intrusions of warm deep waters from offshore. The Fourcade Glacier switched very recently to being land-terminating; if retreat rates elsewhere along the Peninsula remain high and glacier termini progress strongly landward, the structure and impact of the freshwater discharges are likely to increasingly resemble the patterns elucidated here.This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’.

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“…One, often overlooked, anthropogenic stressor is increasing turbidity, which results in coastal darkening. Increased input of terrigenous matter as a result of logging, urban development and farming practices near coastlines poses an undeniable threat to coastal marine ecosystems (Airoldi & Cinelli, 1997; Deregibus et al, 2020; Desmond et al, 2015; Harley et al, 2012; Kavanaugh et al, 2009; Roleda et al, 2008; Seers & Shears, 2015; Smith & Schindler, 2009). Furthermore, climate change is likely to exacerbate sediment inputs through increases in precipitation, storm activity, glacial melt and sea‐level rise (Davies‐Colley & Smith, 2001; Fabricius et al, 2014; Klein et al, 2012; Seers & Shears, 2015; Storlazzi et al, 2009; Syvitski et al, 2005; Thrush et al, 2004).…”

Section: Introductionmentioning

confidence: 99%