43 Result(s)
within
Oliver Heiri
English
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Article
Open AccessAnthropogenic Eutrophication Drives Major Food Web Changes in Mwanza Gulf, Lake Victoria
Discerning ecosystem change and food web dynamics underlying anthropogenic eutrophication and the introduction of non-native species is necessary for ensuring the long-term sustainability of fisheries and lake...
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Article
Open AccessAquatic invertebrate mandibles and sclerotized remains in Quaternary lake sediments
Subfossil remains of aquatic invertebrates found in lacustrine sediments are useful paleoenvironmental indicators. Strongly scleroticized chitinous body parts from the exoskeleton or exuviae from invertebrates...
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Article
Open AccessA continuous fish fossil record reveals key insights into adaptive radiation
Adaptive radiations have been instrumental in generating a considerable amount of life’s diversity. Ecological opportunity is thought to be a prerequisite for adaptive radiation1, but little is known about the re...
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Open AccessHigh resolution ancient sedimentary DNA shows that alpine plant diversity is associated with human land use and climate change
The European Alps are highly rich in species, but their future may be threatened by ongoing changes in human land use and climate. Here, we reconstructed vegetation, temperature, human impact and livestock ove...
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Article
Open Access14,500 years of vegetation and land use history in the upper continental montane zone at Lac de Champex (Valais, Switzerland)
Forests in the upper continental montane zone are important ecotones between lowland and subalpine forest ecosystems. A thorough understanding of the past vegetation dynamics at mid elevation is crucial to ass...
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Article
Open AccessSynchronous vegetation response to the last glacial-interglacial transition in northwest Europe
The North Atlantic region experienced abrupt high-amplitude cooling at the onset of the Younger Dryas stadial. However, due to chronological uncertainties in the available terrestrial records it is unclear whe...
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Paleolimnological Indicators of Global Change
and the . In this chapter, we summarize the results of paleolimnological research conducted to track recent environmental and ecological changes in and their catchments during the last two centur...
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Open AccessPublisher Correction: A global database of Holocene paleotemperature records
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Article
Open AccessAuthor Correction: A global database of Holocene paleotemperature records
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Article
Open AccessHolocene global mean surface temperature, a multi-method reconstruction approach
An extensive new multi-proxy database of paleo-temperature time series (Temperature 12k) enables a more robust analysis of global mean surface temperature (GMST) and associated uncertainties than was previousl...
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Article
Open AccessPublisher Correction: A global database of Holocene paleotemperature records
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Article
Open AccessA global database of Holocene paleotemperature records
A comprehensive database of paleoclimate records is needed to place recent warming into the longer-term context of natural climate variability. We present a global compilation of quality-controlled, published,...
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Open AccessThe Little Ice Age signature in a 700-year high-resolution chironomid record of summer temperatures in the Central Eastern Alps
Despite the fact that the Little Ice Age (LIA) is well documented for the European Alps, substantial uncertainties concerning the regional spatio-temporal patterns of temperature changes associated with the LI...
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Ecosystem Responses to Climate-Related Changes in a Mediterranean Alpine Environment Over the Last ~ 180 Years
The effect of recent climatic warming is significant in the Mediterranean region, especially in high-mountain areas. This study uses multiple sedimentary proxies from Río Seco Lake, a remote alpine lake in the...
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Article
The last hornbeam forests in SW Europe: new evidence on the demise of Carpinus betulus in NW Iberia
Carpinus betulus L. is a mesic, usually considered late-successional tree widely distributed in Europe, but almost absent from Iberia, where it is generally assumed that disappeared during the co...
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An empirical perspective for understanding climate change impacts in Switzerland
Planning for the future requires a detailed understanding of how climate change affects a wide range of systems at spatial scales that are relevant to humans. Understanding of climate change impacts can be gai...
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Warm Mediterranean mid-Holocene summers inferred from fossil midge assemblages
Understanding past climate trends is key for reliable projections of global warming and associated risks and hazards. Uncomfortably large discrepancies between vegetation-based summer temperature reconstructio...
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Article
Multiple causes of the Younger Dryas cold period
The last deglaciation was interrupted by a cool period known as the Younger Dryas. Numerical simulations suggest that the cold interval was the result of a combination of changes in ocean and atmospheric circu...
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Article
An inter-regional assessment of concentrations and δ13C values of methane and dissolved inorganic carbon in small European lakes
Methane (CH4) and carbon dioxide emissions from lakes are relevant for assessing the greenhouse gas output of wetlands. However, only few standardized datasets describe concentrations of these gases in lakes acro...
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Validation of climate model-inferred regional temperature change for late-glacial Europe
Comparisons of climate model hindcasts with independent proxy data are essential for assessing model performance in non-analogue situations. However, standardized palaeoclimate data sets for assessing the spat...
