Differential Plasticity in Response to Simulated Climate Warming in a High-Elevation Amphibian Assemblage

2017 ◽  
Vol 51 (2) ◽  
pp. 232-239 ◽  
Author(s):  
Lindsey L. Thurman ◽  
Tiffany S. Garcia
Keyword(s):  
Climate Warming ◽  
High Elevation ◽  
Simulated Climate

Simulating High-Elevation Hydropower with Regional Climate Warming in the West Slope, Sierra Nevada

2014 ◽  
Vol 140 (5) ◽  
pp. 714-723 ◽  
Author(s):  
David E. Rheinheimer ◽  
Joshua H. Viers ◽  
Jack Sieber ◽  
Michael Kiparsky ◽  
Vishal K. Mehta ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Climate Warming ◽  
Regional Climate ◽  
High Elevation ◽  
The West

Simulated climate-warming increases Coleoptera activity-densities and reduces community diversity in a cereal crop

2015 ◽  
Vol 210 ◽  
pp. 11-14 ◽  
Author(s):  
Sophie C.F. Berthe ◽  
Stéphane A.P. Derocles ◽  
David H. Lunt ◽  
Bruce A. Kimball ◽  
Darren M. Evans
Keyword(s):  
Climate Warming ◽  
Community Diversity ◽  
Cereal Crop ◽  
Simulated Climate

Rapid Ecohydrological Response of a Mountaintop Peatland to Recent Climate Warming in Northeast China

2021 ◽  
Author(s):  
Tingwan Yang ◽  
Hongyan Zhao ◽  
Zhengyu Xia ◽  
Zicheng Yu ◽  
Hongkai Li ◽  
...  
Keyword(s):  
High Resolution ◽  
Climate Warming ◽  
Northeast China ◽  
Environmental Changes ◽  
Detrended Correspondence Analysis ◽  
Plant Macrofossils ◽  
Testate Amoebae ◽  
High Elevation ◽  
Changbai Mountains ◽  
Recent Climate

<p>Montane bogs—peat-forming ecosystems located in high elevation and receiving their water supply mostly from meteoric waters—are unique archives of past environmental changes. Studying these ecosystems and their responses to recent climate warming will help improve our understanding of the sensitivity of high-elevation peatlands to regional climate dynamics. Here, we report a post-bomb radiocarbon-dated, high-resolution, and multi-proxy record in Laobaishan bog (LBS), a mountaintop bog from the Changbai Mountains Range in Northeast China. We analyzed plant macrofossils and testate amoebae of a 41-cm peat core dated between 1970 and 2009 to document the ecohydrological response of peatland to the anthropogenic warming in recent decades. We quantitatively reconstruct the surface wetness changes of LBS bog using the first axis of the detrended correspondence analysis (DCA) of plant macrofossil assemblages and depth to water table (DWT) inferred by transfer function of testate amoebae assemblages. We distinguished two hydroclimate stages: the moist stage before the 1990s and the rapidly drying stage since the 1990s. During the moist stage, plant macrofossils were characterized by the low abundance of <em>Sphagnum capitifolium</em> and <em>Polytrichum strichum</em> that prefer dry habitats, and testate amoebae assemblages were dominated by low abundance of dry-adapted <em>Assulina muscorum</em> and <em>Corythion dubium</em>. High score of first axis and low DWT also suggested a moist habitat at LBS. After the transition into the drying stage, the abundance of <em>S. capitifolium</em> and <em>P. strichum</em> increased and that of <em>A. muscorum</em> and <em>C. dubium</em> showed similar trend. Score of first axis and DWT reconstructions show that LBS have experienced rapid surface desiccation since the 1990s. Based on the high-resolution gridded reanalysis data, these ecohydrological changes occurred with a rapid increase in temperature (~1°C) but without notable change in total precipitation during the growing season (May–September) since the 1990s. Besides, backward trajectory analysis showed no apparent changes in atmospheric circulation pattern since the 1990s, supporting our interpretation that the ecohydrological changes in LBS bog were induced by climate warming. These results demonstrate that the plant communities, microbial assemblages, and peatland hydrology of montane peatland show a sensitive response to climate warming that might be in larger amplitude than the low-elevation areas.</p>

Climate warming does not adequately translate to increased radial stem growth of coniferous species along the Alpine treeline ecotone

2020 ◽  
Author(s):  
Walter Oberhuber ◽  
Ursula Bendler ◽  
Vanessa Gamper ◽  
Jacob Geier ◽  
Anna Hölzl ◽  
...  
Keyword(s):  
Climate Warming ◽  
Tree Growth ◽  
Growth Response ◽  
Growing Season ◽  
High Elevation ◽  
Stem Growth ◽  
Stone Pine ◽  
Recent Climate ◽  
Swiss Stone Pine ◽  
Competition For Resources

<p>It is well established, that tree growth at high elevations is mainly limited by low temperature during the growing season and climate warming was frequently found to lead to more growth and expansion of trees into alpine tundra. However, dendroclimatological studies revealed contradictory growth response to recent climate warming at the upper elevational limit of tree growth, and transplant experiments unveiled that high elevation tree provenances are not adequately benefiting from higher temperatures when planted at lower elevation. We therefore re-evaluated growth response of trees to recent climate warming by developing tree ring series of co-occurring conifers (Swiss stone pine (<em>Pinus cembra</em>), European larch (<em>Larix decidua</em>), and Norway spruce (<em>Picea abies</em>)) along several altitudinal transects stretching from the subalpine zone to the krummholz-limit (1630–2290 m asl; n=503 trees) in the Central European Alps (CEA). We evaluated whether trends in basal area increment (BAI) are in line with two phases of climate warming which occurred from 1915–1953 and from mid-1970s until 2015. We expected that BAI of all species shows an increasing trend consistent with distinct climate warming during the study period (1915–2015) amounting to >2 °C. Although enhanced tree growth was detected in all species in response to climate warming, results revealed that at subalpine sites (<em>i</em>) intensified climate warming since mid-1970s did not lead to corresponding increase in BAI, and (<em>ii</em>) increase in summer temperature primarily favored growth of Norway spruce, although Swiss stone pine dominates at high altitude in the CEA and therefore was expected to mainly benefit from climate warming. At treeline BAI increase was above the determined age trend in all species, whereas at the krummholz-limit only deciduous larch showed minor growth increase. We explain missing adequate growth response to recent climate warming (<em>i</em>) by strengthened competition for resources (primarily nutrients and light) in increasingly denser stands at subalpine sites leading to changes in carbon allocation among tree organs, and (<em>ii</em>) by frost desiccation injuries of evergreen tree species at the krummholz-limit. Our findings indicate that tree growth response to climate warming at high elevation is possibly nonlinear, and that increasing competition for resources and the influence of climate factors beyond the growing season impair stem growth. </p>

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