Penguins and Seals Transport Limiting Nutrients Between Offshore Pelagic and Coastal Regions of Antarctica Under Changing Sea Ice

Wing, Stephen R.; Wing, Lucy C.; O’Connell-Milne, Sorrel A.; Barr, David; Stokes, M. Dale; Genovese, Sal J.; Leichter, James J.

doi:10.1007/s10021-020-00578-5

Cited by 14 publications

(15 citation statements)

References 86 publications

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“…We found that some coral reef fish species contained one to two orders of magnitude greater fecal Fe concentrations (e.g., Acanthurus pyroferus 43,015 mg kg −1 ) than found in sperm whales (757 mg kg −1 ) and predatory seabirds, like the south polar skua (3928 mg kg −1 ). We further found that a small‐bodied wrasse, Thalassoma hardwicke , had a four‐fold greater fecal Mn concentration than multiple species of whales, seabirds, and seals (167 mg kg −1 vs. 22–43 mg kg −1 ) (Ratnarajah et al, 2014; Wing et al, 2021). Despite their small size compared to the above marine animals, coral reef fishes represent a high proportion of biomass within their ecosystem; thus, their total fecal output represents a large nutrient contribution.…”

Section: Discussionmentioning

confidence: 84%

“…However, biodiversity loss is increasing at an alarming rate due to local and global disturbances with the potential to alter system‐wide nutrient dynamics (Barnosky et al, 2011; Pereira et al, 2012). Despite the importance of animals in cycling nutrients across many ecosystems, we know remarkably little about how individual species within communities and their associated traits (e.g., taxonomy, diet) may influence their role for system‐wide nutrient cycling (but see Allgeier et al, 2017; Peters et al, 2019; Wing et al, 2021). This is particularly true in highly diverse ecosystems such as coral reefs, which host a quarter of the global marine biodiversity (Carpenter et al, 2008; Plaisance et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Fish feces reveal diverse nutrient sources for coral reefs

Wert

Ezzat

Munsterman

et al. 2023

Ecology

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Consumers mediate nutrient cycling through excretion and egestion across most ecosystems. In nutrient-poor tropical waters such as coral reefs, nutrient cycling is critical for maintaining productivity. While the cycling of fish-derived inorganic nutrients via excretion has been extensively investigated, the role of egestion for nutrient cycling has remained poorly explored. We sampled the fecal contents of 570 individual fishes across 40 species, representing six dominant trophic guilds of coral reef fishes in Moorea, French Polynesia. We measured fecal macro-(proteins, carbohydrates, lipids) and micro-(calcium, copper, iron, magnesium, manganese, zinc) nutrients and compared the fecal nutrient quantity and quality across trophic guilds, taxa, and body size. Macro-and micronutrient concentrations in fish feces varied markedly across species. Genera and trophic guild best predicted fecal nutrient concentrations. In addition, nutrient composition in feces was unique among species within both trophic guilds (herbivores and corallivores) and genera (Acanthurus and Chaetodon). Particularly, certain coral reef fishes (e.g., Thalassoma hardwicke, Chromis xanthura, Chaetodon pelewensis and Acanthurus pyroferus) harbored relatively high concentrations of micronutrients (e.g., Mn, Mg, Zn and Fe, respectively) that are known to contribute to ocean productivity and positively impact coral physiological performances. Given the nutrient-rich profiles across reef fish feces, conserving holistic reef fish communities ensures the availability of nutritional pools on coral reefs. We therefore suggest that better integration of consumer egestion dynamics into food web models and ecosystem-scale processes will facilitate an improved understanding of coral reef functioning.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Fish feces reveal diverse nutrient sources for coral reefs

Wert

Ezzat

Munsterman

et al. 2023

Ecology

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“…Little is known about how the migratory patterns and different trophic ecologies of Antarctic seabirds can influence their exposure to TEs in Antarctic environments (Wing et al, 2020). To help fill this gap, this study aims to evaluate the species-specific differences in exposure of migratory (South polar skua, antarctic tern, snowy sheathbill, giant petrel, and kelp gull) Antarctic seabirds to 18 TEs (7 essential and 11 non-essential) through feather and eggs analysis.…”

Section: Introductionmentioning

confidence: 99%

Trace elements in migratory species arriving to Antarctica according to their migration range

Padilha

Carvalho

Espejo

et al. 2023

Marine Pollution Bulletin

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“…

Sea ice plays an important role in the World's energy balance by reflecting the incoming solar radiation back to space and by regulating heat and gas exchanges between the ocean and the atmosphere (Hobbs et al, 2016). As a crucial breeding habitat for marine biota, sea ice is also vital to coastal ecosystems in Antarctica (Wing et al, 2021).Unlike the Arctic where the sea ice extent has shown a steady decline since the start of satellite observations (Lannuzel et al, 2020), sea ice extent surrounding Antarctica has not demonstrated a clear trend. Sea ice reconstructions from ice cores (Thomas

…”

mentioning

confidence: 99%

“…Sea ice plays an important role in the World's energy balance by reflecting the incoming solar radiation back to space and by regulating heat and gas exchanges between the ocean and the atmosphere (Hobbs et al, 2016). As a crucial breeding habitat for marine biota, sea ice is also vital to coastal ecosystems in Antarctica (Wing et al, 2021).…”

mentioning

confidence: 99%

Signature of the stratosphere-troposphere coupling on recent record-breaking Antarctic sea ice anomalies

Cordero

Féron

Damiani

et al. 2023

Preprint

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Abstract. By influencing the circumpolar westerly winds, the stratospheric polar vortex has played a major role in the Antarctic surface climate in recent decades. However, the footprint of the polar vortex variability in the year-to-year changes of the Antarctic sea ice cover remains obscured. Here, we combine satellite retrievals and reanalysis data to study the response of the sea ice extent around Antarctica to changes in the polar vortex strength. We focused on the last two decades that have seen sharp changes in the stratospheric zonal flow, the tropospheric westerly winds, and the sea ice cover (the latter climbed to record highs in 2013 and 2014 before dropping to record lows in 2017 and 2022). We found that this unprecedented interannual variability has been noticeably influenced by the polar vortex dynamics. The signature of the stratosphere-troposphere coupling is apparent on recent all-time records (highs and lows) in the sea ice around Antarctica.

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Penguins and Seals Transport Limiting Nutrients Between Offshore Pelagic and Coastal Regions of Antarctica Under Changing Sea Ice

Abstract: Penguins and seals transport limiting nutrients between offshore pelagic and coastal regions...

Cited by 14 publications

References 86 publications

Fish feces reveal diverse nutrient sources for coral reefs

Fish feces reveal diverse nutrient sources for coral reefs

Trace elements in migratory species arriving to Antarctica according to their migration range

Signature of the stratosphere-troposphere coupling on recent record-breaking Antarctic sea ice anomalies

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