Journal Title
Title of Journal: Polar Biol
|
Abbravation: Polar Biology
|
Publisher
Springer Berlin Heidelberg
|
|
|
|
|
|
Authors: Simon Belle Damien Rius Vincent Bichet Charly Massa Christophe Mavon Laurent Millet
Publish Date: 2017/03/02
Volume: 40, Issue: 9, Pages: 1707-1719
Abstract
We aim at understanding the influence of climate change on the functioning of two freshwater lakes in South Greenland by combining limnological and paleolimnological methods The results offer a means of testing the potential use of subfossil chironomid for paleoclimate reconstruction First the current ecological status of Lake Igaliku and Lake 95 has been assessed by the combined use of a biotic index and δ15N analysis of chironomid larvae The current ecological state of Lake 95 as a remote lake exempt from local human activities remains pristine In contrast Lake Igaliku exhibits a worrying ecological state characterized by the disruption of the nitrogen cycle a loss of littoral biodiversity and alterations of its trophic functioning A paleolimnological approach combining subfossil chironomid and geochemical analysis was applied to reconstruct the ecological trajectories of the lakes over the last 150 years Redundancy analysis performed on chironomid assemblages shows that the two systems are partially driven by climate variability and underscoring the strong potential of chironomid remains for paleoclimatic reconstruction However local farming activities in the catchment area of Lake Igaliku have strongly impacted its ecological state since the late 1980s masking the actual effects of the current global warming In conclusions in southern Greenland lakes in pristine conditions may be excellent candidates for the past climate reconstructions based on subfossil chironomidsFinancial supports were provided by Conseil Régional de FrancheComté and the ANR CEPS “Green Greenland” Project ANR10CEPL0008 We thank Christian Hossann INRA Nancy Champenoux for assistance in the stable isotope analysis of nitrogen The PTEF facility is supported by the French National Research Agency through the Laboratory of Excellence ARBRE ANR11LABX000201 We address also our gratitude to Oliver Mathieu Biogeosciences Dijon and Andres Curras for their technical help during the field survey at Lake 95
Keywords:
.
|
Other Papers In This Journal:
- The HSP70 heat shock response in the Antarctic fish Harpagifer antarcticus
- The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins?
- Water geochemistry and sedimentary pigments in northern Victoria Land lakes, Antarctica
- High Arctic vegetation after 70 years: a repeated analysis from Svalbard
- Factors affecting plasma chemistry values of the black-browed albatross Thalassarche melanophrys
- Large numbers of marine mammals winter in the North Water polynya
- First record of lithodid crabs from Antarctic waters off the Balleny Islands
- Biosurfactant production by Arctic and Antarctic bacteria growing on hydrocarbons
- Heat hardening in Antarctic notothenioid fishes
- Bacterial diversity in Greenlandic soils as affected by potato cropping and inorganic versus organic fertilization
- Relationships between Arctic and Antarctic Shewanella strains evaluated by a polyphasic taxonomic approach
- Leucistic southern elephant seal at Marion Island
- Atlantic snake pipefish ( Entelurus aequoreus ) extends its northward distribution range to Svalbard (Arctic Ocean)
- Extended ecophysiological analysis of Gomphiocephalus hodgsoni (Collembola): flexibility in life history strategy and population response
- Skull morphometry of Pygoscelis (Sphenisciformes): inter and intraspecific variations
- Is management limiting the recovery of the New Zealand sea lion Phocarctos hookeri ?
- Annual development of mat-forming conjugating green algae Zygnema spp. in hydro-terrestrial habitats in the Arctic
- Description of Gosztonyia antarctica , a new genus and species of Zoarcidae (Teleostei: Perciformes) from the Antarctic Ocean
- Temporal and vertical variations of lipid biomarkers during a bottom ice diatom bloom in the Canadian Beaufort Sea: further evidence for the use of the IP 25 biomarker as a proxy for spring Arctic sea ice
- Decadal change in macrobenthic soft-bottom community structure in a high Arctic fjord (Kongsfjorden, Svalbard)
- Synchronicity of movement paths of barren-ground caribou and tundra wolves
- Greater nitrogen and/or phosphorus availability increase plant species’ cover and diversity at a High Arctic polar semidesert
- Models of Arctic-alpine refugia highlight importance of climate and local topography
- Distribution of marine viruses and their potential hosts in Prydz Bay and adjacent Southern Ocean, Antarctic
- The role of arctic zooplankton in biogeochemical cycles: respiration and excretion of ammonia and phosphate during summer
- Temporal patterns of benthic community development in an Arctic fjord (Kongsfjorden, Svalbard): results of a 24-year manipulation study
- Diversity, structure and interactions of encrusting lithophyllic macrofaunal assemblages from Belgica Bank, East Greenland
- Pelagic swarms and beach strandings of the squat lobster Munida gregaria (Anomura: Munididae) in the Beagle Channel, Tierra del Fuego
- Characterization of yeast and filamentous fungi isolated from cryoconite holes of Svalbard, Arctic
- Snow-induced changes in dwarf birch chemistry increase moth larval growth rate and level of herbivory
- Distribution and population dynamics of Euphausia superba : summary of recent findings
- Invasion of terrestrial enchytraeids into two postglacial tundras: North-eastern Greenland and the Arctic Archipelago of Canada (Enchytraeidae, Oligochaeta)
- Variability in the summer diets of juvenile polar cod ( Boreogadus saida ) in the northeastern Chukchi and western Beaufort Seas
- Fish blood as a chemical signal for Antarctic marine invertebrates
- Distribution and diet of 0-group cod ( Gadus morhua ) and haddock ( Melanogrammus aeglefinus ) in the Barents Sea in relation to food availability and temperature
- Photoadaptation of an ice algal community in thin sea ice, Saroma-Ko Lagoon, Hokkaido, Japan
- Photoadaptation of an ice algal community in thin sea ice, Saroma-Ko Lagoon, Hokkaido, Japan
- Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica)
- Plectolyngbya hodgsonii : a novel filamentous cyanobacterium from Antarctic lakes
- Inter-breeding movements of common guillemots ( Uria aalge ) suggest the Barents Sea is an important autumn staging and wintering area
- Degradation of nonane by bacteria from Antarctic marine sediment
- Metabolic fingerprinting of arctic copepods Calanus finmarchicus , Calanus glacialis and Calanus hyperboreus
- Observations of bowhead whales ( Balaena mysticetus ) in the Svalbard area 1940–2009
- Individual variability of behavioural responses by Wandering Albatrosses ( Diomedea exulans ) to human disturbance
- Recent range expansions in non-native predatory beetles on sub-Antarctic South Georgia
|