Results 191 to 200 of about 1,591,136 (306)
ABSTRACT Grassland degradation profoundly alters the structure and function of desert steppe ecosystems. However, the responses of herbaceous aboveground biomass (Herb‐AGB) to degradation across different plant community types and the underlying mechanisms remain poorly understood.
Huaihai Wang +8 more
wiley +1 more source
Extreme rainfall reshapes permafrost thermal regimes across the Northern Hemisphere. [PDF]
Li Q +5 more
europepmc +1 more source
Topographic and Climatic Determinants of Soil Organic Carbon Across Landscapes: A Meta‐Analysis
ABSTRACT The soil is the greatest natural store of organic carbon, holding between 1500 to 1550 Pg C of organic carbon at the top 100 cm of the soil globally—roughly twice the carbon pool in the atmosphere. The spatial distribution of this stock is controlled by a complex chain of controls: topographic position regulates the hydrological redistribution,
Vishal Sharma +8 more
wiley +1 more source
Atmospheric water vapor contribution to interannual variability of Northern Hemisphere summer heatwaves. [PDF]
Cao D, Lin H, Huang Y.
europepmc +1 more source
A revision of the keys to the species of Mycena (Pers.) Roussel section Fragilipedes of the Northern Hemisphere as published by Maas Geesteranus (1988a) is presented here. New taxa published between 1988 and 2003 are included, as well as some species transferred from other sections of Mycena and from the genus Hydropus.
openaire +1 more source
Historical data reveal earlier flowering under environmental change
Global temperatures have risen ~ 1.1°C since the 1800s and the mean annual air temperature in the Arctic has increased by nearly four times the global average. Temperature has a significant effect on fundamental life‐cycle events of flora and fauna. With temperatures increasing, Arctic plants are expected to shift their active periods accordingly, with
Elizabeth Stunz +2 more
wiley +1 more source
Life history stability under climate change: a wildflower at the northern edge of its range
Stabilities of life history traits for a widespread native perennial wildflower, Rudbeckia laciniata L., are described for five populations near the northern edge of its range in North America. Theory proposes that such populations experience variable levels of stress as suitable abiotic conditions shift north or south from year to year, which ...
Robert J. Lamb, Patricia A. MacKay
wiley +1 more source
Contrasting historical trends of atmospheric rivers in the Northern Hemisphere. [PDF]
Pan M, Hu S, Zaitchik BF, Pan WK.
europepmc +1 more source
Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands
Portulaca L. is a monophyletic, cosmopolitan genus of succulent plants comprising ca 153 species, with particularly high diversity in xerophytic ecosystems in tropical and subtropical regions. Based on morphological evidence, we describe and illustrate two new species from the Brazilian Pampa, Portulaca guaritensis and Portulaca guenoa.
José Roberto Ferraz +3 more
wiley +1 more source

