Soil properties across a hydrological gradient in saladas from northeast Spain: what are the implications for soil carbon stocks, CO2 efflux and microbial communities in a warming world?
نویسندگان
چکیده
Abstract Numerous permanent and temporary wetlands occur throughout the world’s drylands. Although characterised by diverse water inundation frequencies, durations depths, these in drylands are typically hotspots of biological activity productivity. The healthy functioning even existence many drylands, however, is threatened desiccation resulting from a combination climate change human disturbance. Near Alcañiz arid northeast Spain, three adjacent saladas (playas) with contrasting hydroperiods provide an opportunity to investigate how moisture availability affects their soil carbon (C) stocks, CO 2 efflux, microbial communities. Predicting impacts changes on C cycle challenging but important because contain large stocks may be significant sources sinks greenhouse gases. Frequent and/or near-permanent saturation supports generation organic range different sources. Soil inorganic was greatest driest salada (3.8%) compared wetter (3.0% 2.1%) owing evaporative concentration reaction available Ca 2+ , Mg Na + ions. efflux at intermediate levels (142 mg m −2 h −1 ), spatial temporal variability surfaces large, demonstrating need for intensive sampling regimes realistic estimates contribution atmospheric exchanges. Different community structures also characterise each salada. near Alcañiz, other similar features renowned rare flora fauna, yet characteristics communities additional reasons monitor protect vulnerable environments further anthropogenic disturbances.
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ژورنال
عنوان ژورنال: Wetlands Ecology and Management
سال: 2022
ISSN: ['0923-4861', '1572-9834']
DOI: https://doi.org/10.1007/s11273-022-09856-6