Temperature impact on the influence of penguin‐derived nutrients and mosses on non‐native grass in a simulated polar ecosystem

Bokhorst, Stef; Convey, Peter; Logtestijn, Richard S. P. van; Aerts, Rien

doi:10.1111/gcb.15979

Cited by 9 publications

(5 citation statements)

References 77 publications

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“…Nutrient limitation plays a major role in shaping polar communities (Zwolicki et al 2016;Bokhorst et al 2019Bokhorst et al , 2022Du et al 2020), but we only observed increasing response trends, with large variability among the 22 polar studies (Fig. 4).…”

Section: Climatic and Latitude Influencesmentioning

confidence: 72%

Bird traits and their nutrient impact on terrestrial invertebrate populations

Vegt

Bokhorst

2023

Polar Biol

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Birds are a large nutrient vector from marine to terrestrial environments where the increased nutrient input typically results in greater primary production and enhanced microbial activity. Associated invertebrate populations however, show large response variability to bird nutrient subsidies. To explain this variable invertebrate response, we performed a meta-analysis (50 articles ranging from polar to tropical regions) where we compared the effect of bird presence on invertebrate populations between: bird taxa, nesting site selection, bird diet and climate regions. In addition, we quantified how different invertebrate taxa and trophic guilds respond to the presence of birds. Invertebrate abundance was on average > 1000% higher by bird presence, but there was little evidence for any specific bird-taxa effects on invertebrate abundance responses. Birds with a mixed diet increased Coleoptera populations the most. Invertebrate responses to bird presence were largest in polar regions but variation remained high. Not all species within communities responded to bird presence, indicating that nutrient limitation is species-specific or ecosystems are affected in different ways by birds. Furthermore, sampling strategies were inconsistent and may impact effect-sizes. Despite the contrasting nature of the different studies, an overall positive invertebrate abundance response was found in the presence of birds, with larger responses observed in polar regions. Standardized sampling approaches would resolve much of the remaining variability. As natural experiments, bird nests and affected areas are a prime spot to study community assembly rules and address issues of anthropogenic disturbance and climate change.

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Section: Climatic and Latitude Influencesmentioning

confidence: 72%

Bird traits and their nutrient impact on terrestrial invertebrate populations

Vegt

Bokhorst

2023

Polar Biol

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“…Although native terrestrial vertebrates are absent, breeding and molting populations of marine mammals and birds are a key source of marine‐derived nutrient supplies (Bokhorst et al, 2019). It is very likely that these marine animals will alter their movements with the changing climate (McCarthy et al, 2019), which can have significant implications for terrestrial nutrient availability (Bokhorst et al, 2022).…”

Section: The Environment Is Changingmentioning

confidence: 99%

Antarctica's vegetation in a changing climate

Colesie

Walshaw

Sancho

et al. 2022

WIREs Climate Change

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Antarctica plays a central role in regulating global climatic and oceanographic patterns and is an integral part of global climate change discussions. The functioning of Antarctica's terrestrial ecosystems is dominated by poikilohydric cryptogams such as lichens, bryophytes, eukaryotic algae, and cyanobacteria and there are only two native species of vascular plants. Antarctica's vegetation is highly adapted to the region's extreme conditions but, at the same time, it is potentially highly susceptible to climatic fluctuations. Biological responses to shifts in temperature, water availability, wind patterns, snow, and ice cover are complex, taxa-specific and act on different temporal and spatial scales. In maritime Antarctica, where warming and mass loss of outlet glaciers have been mainly observed, the vegetation is expected to show increases in productivity, abundance, and cover. In continental Antarctica, observational and experimental evidence is still sparse, but it is pointing toward even drier and harsher conditions for survival. We need more information on what the observed and predicted changes in Antarctic vegetation are for different regions and ecosystems. This will inform us how environmental change and human impact will shape the future of these ecosystems, and whether the speed and magnitude of change have habitat-specific effects and implications. Antarctica's unique ecosystems are changing and in this review, we describe the current situation, tools to measure, and evaluate change and how change is likely to look in the future.

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“…Changes from mosses to lichens induced by environmental change are accompanied by changes in the communities that live within these vegetation types (e.g., diatom composition, see Bishop et al, 2021 ). On the Antarctic Peninsula, mosses often provide a nursery for establishment of vascular plants, which may then outcompete them (Bokhorst et al, 2022 ; Casanova‐Katny & Cavieres, 2012 ).…”

Section: Live Mosses and Peatsmentioning

confidence: 99%

Emerging biological archives can reveal ecological and climatic change in Antarctica

Strugnell

McGregor

Wilson

et al. 2022

Global Change Biology

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Anthropogenic climate change is causing observable changes in Antarctica and the Southern Ocean including increased air and ocean temperatures, glacial melt leading to sea-level rise and a reduction in salinity, and changes to freshwater water availability on land. These changes impact local Antarctic ecosystems and the Earth's climate system. The Antarctic has experienced significant past environmental change, including cycles of glaciation over the Quaternary Period (the past ~2.6 million years). Understanding Antarctica's paleoecosystems, and the corresponding paleoenvironments and climates that have shaped them, provides insight into present day ecosystem change, and importantly, helps constrain model projections of future change.Biological archives such as extant moss beds and peat profiles, biological proxies in lake and marine sediments, vertebrate animal colonies, and extant terrestrial and benthic marine invertebrates, complement other Antarctic paleoclimate archives by recording the nature and rate of past ecological change, the paleoenvironmental drivers of that change, and constrain current ecosystem and climate models. These archives provide invaluable information about terrestrial ice-free areas, a key location for Antarctic biodiversity, and the continental margin which is important for understanding ice sheet dynamics. Recent significant advances in analytical techniques (e.g., genomics, biogeochemical analyses) have led to new applications and greater

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Temperature impact on the influence of penguin‐derived nutrients and mosses on non‐native grass in a simulated polar ecosystem

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution-NonCo mmercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Cited by 9 publications

References 77 publications

Bird traits and their nutrient impact on terrestrial invertebrate populations

Bird traits and their nutrient impact on terrestrial invertebrate populations

Antarctica's vegetation in a changing climate

Emerging biological archives can reveal ecological and climatic change in Antarctica

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