Blar i Department of Biological Sciences på emneord "Climate change"
Viser treff 1-20 av 23
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Assessing and comparing climatic control on distribution and reproduction of alpine and lowland species in the subalpine habitat of western Norway.
(Doctoral thesis, 2012-02-06)Aims and background: Species range shift is among the most well-documented responses to climate change. As a result, a growing number of studies model species climatic niches to predict how species ranges may displace in ... -
Centennial decline in North Sea water clarity causes strong delay in phytoplankton bloom timing
(Peer reviewed; Journal article, 2019-08-23)With climate warming, a widespread expectation is that events in spring, such as flowering, bird migrations, and insect bursts, will occur earlier because of increasing temperature. At high latitudes, increased ocean ... -
Changes in marine prokaryote composition with season and depth over an Arctic polar year
(Peer reviewed; Journal article, 2017-04-13)As the global climate changes, the higher latitudes are seen to be warming significantly faster. It is likely that the Arctic biome will experience considerable shifts in ice melt season length, leading to changes in ... -
A climate for seed predation: Precipitation affects seed removal by the major groups of granivores differently across boreal, sub-alpine and alpine grasslands
(Master thesis, 2018-12-15)Granivory, the seed predation by animals, plays an important role for plant and animal populations, and impact species composition and functioning of ecosystems. The intensity in granivory depends on various biotic and ... -
Climatic and environmental factors influencing occurrence and distribution of macroalgae – a fjord gradient revisited
(Peer reviewed; Journal article, 2015)During the last decades, trends of increasing sea water temperatures and precipitation have been observed in the North Atlantic. Increasing sea water temperatures are expected to have strong effects on coastal benthic ... -
Distribution and autecology of chrysophyte cysts from high Arctic Svalbard lakes: preliminary evidence of recent environmental change
(Peer reviewed; Journal article, 2004)Chrysophycean stomatocyst assemblages were analysed from the sediments of 17 lakes and ponds from Svalbard as one component of a multi-proxy investigation of recent environmental change in the high Arctic. Sediment cores ... -
The dynamics of Chironomidae (Insecta: Diptera) assemblages in response to environmental change during the past 700 years on Svalbard
(Peer reviewed; Journal article, 2004)The impact of recent natural and human-induced environmental change on chironomid faunas on Svalbard has been investigated. The modern chironomid fauna was studied from surface-sediment samples collected from 23 lakes in ... -
Effects of copepod size on fish growth: A model based on data for North Sea sandeel
(Peer reviewed; Journal article, 2015-02-03)In productive marine off-shore ecosystems, the flow of energy from zooplankton to large predators is channeled through a few species of short-lived, highly abundant schooling planktivorous fish. There are indications that ... -
Genetic differentiation and plasticity interact along temperature and precipitation gradients to determine plant performance under climate change
(Journal article, 2017-09)1. Understanding species' abilities to cope with changing climate is a key prerequisite for predicting the future fates of species and ecosystems. Despite considerable research on species responses to changing climate, ... -
Growth and competition in a warmer ocean: a field experiment with a non-native and two native habitat-building seaweeds
(Peer reviewed; Journal article, 2017-06-21)Kelps and fucoids are important members of temperate seaweed communities, but may be negatively impacted by climate change and non-native species. We used a field experiment to investigate the effect of higher temperatures ... -
High resolution Late-glacial and early-Holocene summer air temperature records from Scotland inferred from Chironomid assemblages
(Peer reviewed; Journal article, 2012-05-18)Lateglacial and early-Holocene mean July air temperatures have been reconstructed, using a chironomid-based inference model, from lake-sediment sequences from Abernethy Forest, in the eastern Highlands of Scotland, and ... -
Historical changes in macroalgal communities in Hardangerfjord (Norway)
(Peer reviewed; Journal article, 2014)Hardangerfjord is the second largest fjord in Norway and is situated on the southwest coast. During the last century the fjord has been influenced by a variety of anthropogenous activities such as industry, hydro-electrical ... -
Ice-algal carbon supports harp and ringed seal diets in the European Arctic: evidence from fatty acid and stable isotope markers
(Journal article; Peer reviewed, 2021)Sea-ice declines in the European Arctic have led to substantial changes in marine food webs. To better understand the biological implications of these changes, we quantified the contributions of ice-associated and pelagic ... -
Identifying the driving factors behind observed elevational range shifts on European mountains
(Peer reviewed; Journal article, 2014-04-13)Aim In recent decades species ranges have shifted upwards in elevation and northwards in latitude. These shifts are commonly interpreted as a response to recent climate warming. However, several alternative hypotheses have ... -
The importance of feeding in determining the sensitivity of benthic invertebrates to future climate change in the tunicate species Ciona intestinalis
(Master thesis, 2016-03-14)Anthropogenically induced global climate change is one of the worlds biggest threats today, with marine ecosystems particularly vulnerable. In the future, the ocean temperature is expected to rise with 2 °C followed by a ... -
Long-Term Climate Regime Modulates the Impact of Short-Term Climate Variability on Decomposition in Alpine Grassland Soils
(Peer reviewed; Journal article, 2018-12)Decomposition of plant litter is an important process in the terrestrial carbon cycle and makes up approximately 70% of the global carbon flux from soils to the atmosphere. Climate change is expected to have significant ... -
Long-term disturbance dynamics and resilience of tropical peat swamp forests
(Peer reviewed; Journal article, 2015-01)1. The coastal peat swamp forests of Sarawak, Malaysian Borneo, are undergoing rapid conversion, predominantly into oil palm plantations. This wetland ecosystem is assumed to have experienced insignificant disturbance in ... -
Plant-pollinator interactions in the alpine: Landscape heterogeneity acts as a potential buffer against climate-change induced mismatch in the pollinator-generalist Ranunculus acris
(Master thesis, 2018-06-19)Phenology changes are a common response to global warming and the timing of phenological events is important for symbiotic interactions, such as pollination. If symbiotic species respond differently to global warming, this ... -
Plastic Population Effects and Conservative Leaf Traits in a Reciprocal Transplant Experiment Simulating Climate Warming in the Himalayas
(Peer reviewed; Journal article, 2018-07-30)Climate warming poses considerable challenges for alpine plant species, especially for competitively inferior ones with resource-conservative adaptations to cold climates. The Himalayas are warming at rates considerably ... -
Recent environmental change and atmospheric contamination on Svalbard as recorded in lake sediments – synthesis and general conclusions
(Peer reviewed; Journal article, 2004)The major patterns of biostratigraphical and geochemical change detected in a multidisciplinary study on recent environmental change and atmospheric contamination on Svalbard are summarised and synthesized. The patterns ...