Search results for "Ilmastonmuutokset"
showing 10 items of 172 documents
Dipesh Chakrabarty, The Climate of History in a Planetary Age
2022
Ekososiaalista politiikkaa ilmastonmuutoksen hillitsemiseksi
2018
Reakcia dubov voči klimatickým extrémom v prechodnej zóne dubových a bukových lesov
2021
Forest management might be threatened by declining health status of oaks in the transition zone between oak and beech forests, where drought is the most limiting factor. The aim of the presented paper is to assess the influence of selected climatic characteristics on the radial growth of oak trees with different stem diameter status in the beech-oak and oak-beech forest altitudinal zones within the forest growth area of Poľana Mt. and Zvolen Basin (Slovakia). Our results show that oaks with less favourable stem diameter position (Weisse’s middle stems) show slower radial growth, have less pronounced climatic precipitation signal and milder response to extreme climatic events. The findings p…
Compound climate extreme events threaten migratory birds’ conservation in western U.S.
2022
In a warming world, more intense and frequent compound climate extreme events pose serious challenges to biodiversity and conservation on Earth as one of the 2030 United Nations’ sustainable development goals (SDGs): “Life On Land” (SDG 15). In summer 2020, concurrent swelling wildfires and a sudden cold snap in the western U.S. killed a massive number of migratory birds. In August 2020, the hot and humid weather in response to the wildfire radiation and the oceanic evaporation could result in killing heat stress for migratory birds along the coastal shoreline, particularly in California. The heat and smoke of wildfires forced the migratory birds to abandon such feeding grounds towards inla…
Negative impact of freeze–thaw cycles on the survival of tardigrades
2023
Global warming effects in temperate and polar regions include higher average temperatures and a decrease in snow cover, which together lead to an increase in the number of freeze–thaw cycles (FTC). These changes could affect the fitness of both terrestrial and aquatic species. In this study, we tested how tardigrades, ubiquitous microscopic invertebrates, face FTC. Tardigrades are amongst the most resistant animals to unfavorable conditions, including long and deep freezing periods, and are an emerging model group for invertebrate ecology and evolution. We used 12 populations of tardigrades, representing different families within order Parachela, inhabiting different ecosystems (glaciers, s…
Increasing air temperature relative to water temperature makes the mixed layer shallower, reducing phytoplankton biomass in a stratified lake
2023
The depth of the mixed layer is a major determinant of nutrient and light availability for phytoplankton in stratified waterbodies. Ongoing climate change influences surface waters through meteorological forcing, which modifies the physical structure of fresh waters including the mixed layer, but effects on phytoplankton biomass are poorly known. To determine the responses of phytoplankton biomass to the depth of the mixed layer, light availability and associated meteorological forcing, we followed daily changes in weather and water column properties in a boreal lake over the first half of a summer stratification period. Phytoplankton biomass increased with the deepening of the mixed layer …
Seasonality of bacterioplankton in subarctic ponds above and below treeline
2009
Uusiutuva energia ja energiajärjestelmän konsensus : mekanisminen näkökulma liikenteen biopolttoaineiden ja syöttötariffin käyttöönottoon Suomessa
2014
”Juhannuksena sää saattaa olla lämmin” : Mitä sanomalehtien sääkirjoitukset kertovat suomalaisten suhteesta säähän ja ilmastoon?
2020
Ilmasto konkretisoituu ihmisten arkeen sään kautta; ilmaston merkitys välittyy sään kokemisessa ja säälle annetuissa paikallisissa merkityksissä. Näin sään ja sille annettujen kulttuuristen merkitysten tutkiminen tuo arvokkaan lisän ilmastonmuutoksen arkisten seurausten hahmottamisessa ja voi auttaa ymmärtämään erilaisia ilmastonmuutosnäkemyksiä ja näistä juontuvia ilmastopolitiikan konflikteja. Tämän vuoksi kiinnostus arkisten sääkokemusten tutkimukseen on kasvanut viime vuosina. Artikkeli tarjoaa katsauksen tähän kansainvälisesti kehittyvään kulttuurisen ilmastotutkimuksen kenttään, sekä tarkastelee empiirisesti sään kulttuurisia merkityksiä Suomessa sanomalehtiaineiston avulla. Empiirine…
An eco-label for the airline industry : instrument for behavioral change?
2017
Climate change is the biggest challenge humanity has ever faced and there is no doubt that human activities are the main cause. One activity that has received much attention in this discussion is air transportation. Although its contribution is still moderate, this industry is growing at a very fast rate and with that its impact on climate change. In order to enjoy its social and economic benefits also in the future and to avoid regulatory restrictions, the industry’s contribution needs to be kept in check. Various mitigation strategies exist such as technological, market-based, operational, regulatory and behavioral changes. This dissertation focuses on behavioral change. One instrument le…