scholarly journals Soil water availability shapes species richness in mid‐latitude shrub steppe plant communities

2020 ◽  
Vol 31 (4) ◽  
pp. 646-657 ◽  
Author(s):  
Samuel E. Jordan ◽  
Kyle A. Palmquist ◽  
John B. Bradford ◽  
William K. Lauenroth
Keyword(s):  
Species Richness ◽  
Soil Water ◽  
Plant Communities ◽  
Water Availability ◽  
Soil Water Availability ◽  
Shrub Steppe ◽  
Steppe Plant ◽  
Steppe Plant Communities

Mid-latitude shrub steppe plant communities: climate change consequences for soil water resources

Ecology ◽  
2016 ◽  
Vol 97 (9) ◽  
pp. 2342-2354 ◽  
Author(s):  
Kyle A. Palmquist ◽  
Daniel R. Schlaepfer ◽  
John B. Bradford ◽  
William K. Lauenroth
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Soil Water ◽  
Plant Communities ◽  
Shrub Steppe ◽  
Steppe Plant ◽  
Soil Water Resources ◽  
Steppe Plant Communities

Acacia tortilis (Forssk.) subsp. raddiana (Savi) Brenan as a foundation species: a test from the arid zone of Tunisia

2012 ◽  
Vol 34 (1) ◽  
pp. 17 ◽  
Author(s):  
Zouhaier Noumi ◽  
Lotfi Abdallah ◽  
Blaise Touzard ◽  
Mohamed Chaieb
Keyword(s):  
Species Richness ◽  
Soil Water ◽  
Water Availability ◽  
Foundation Species ◽  
Total Carbon ◽  
Soil Water Availability ◽  
Soil Conditions ◽  
Acacia Tortilis ◽  
Understorey Vegetation ◽  
Adult Trees

The geographic distribution of Acacia tortilis (Forssk.) Hayne subsp. raddiana (Savi) Brenan in Tunisia, is limited to the Bou-Hedma region (Bled Talah) where the National Park of Bou-Hedma, a UNESCO (1986) biosphere reserve, is located. We have tested the hypothesis that A. tortilis acts as a foundation species as a result of the improvement of soil conditions under its canopy (soil water availability and nutrient enrichment). The herbaceous community (floristic composition, species density, species richness) and soil characteristics (soil nutrients and soil water) were sampled using the quadrat method beneath and between 16 adult trees of A. tortilis with both northwards and southwards (south and north sides) and eight open areas among the trees. Results showed that A. tortilis trees improve soil water availability, the nutrient status of soil (organic matter, total carbon, total nitrogen, extractable phosphorus), and has a positive effect on the understorey vegetation under arid conditions. No significant differences in species richness were observed between the north subhabitats and the south subhabitats.

scholarly journals Characterizing Growing Season Length of Subtropical Coniferous Forests with a Phenological Model

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 95
Author(s):  
Yuan Gong ◽  
Christina L. Staudhammer ◽  
Susanne Wiesner ◽  
Gregory Starr ◽  
Yinlong Zhang
Keyword(s):  
Climate Change ◽  
Soil Water ◽  
Prescribed Fire ◽  
Water Availability ◽  
Longleaf Pine ◽  
Growing Season ◽  
Soil Water Availability ◽  
Future Climate Change ◽  
Short Term ◽  
Phenological Model

Understanding plant phenological change is of great concern in the context of global climate change. Phenological models can aid in understanding and predicting growing season changes and can be parameterized with gross primary production (GPP) estimated using the eddy covariance (EC) technique. This study used nine years of EC-derived GPP data from three mature subtropical longleaf pine forests in the southeastern United States with differing soil water holding capacity in combination with site-specific micrometeorological data to parameterize a photosynthesis-based phenological model. We evaluated how weather conditions and prescribed fire led to variation in the ecosystem phenological processes. The results suggest that soil water availability had an effect on phenology, and greater soil water availability was associated with a longer growing season (LOS). We also observed that prescribed fire, a common forest management activity in the region, had a limited impact on phenological processes. Dormant season fire had no significant effect on phenological processes by site, but we observed differences in the start of the growing season (SOS) between fire and non-fire years. Fire delayed SOS by 10 d ± 5 d (SE), and this effect was greater with higher soil water availability, extending SOS by 18 d on average. Fire was also associated with increased sensitivity of spring phenology to radiation and air temperature. We found that interannual climate change and periodic weather anomalies (flood, short-term drought, and long-term drought), controlled annual ecosystem phenological processes more than prescribed fire. When water availability increased following short-term summer drought, the growing season was extended. With future climate change, subtropical areas of the Southeastern US are expected to experience more frequent short-term droughts, which could shorten the region’s growing season and lead to a reduction in the longleaf pine ecosystem’s carbon sequestration capacity.

Screening optimum population density in response to soil water availability in dryland wheat: From laboratory to field

2021 ◽  
Vol 257 ◽  
pp. 107147
Author(s):  
Sai-Yong Zhu ◽  
Zheng-Guo Cheng ◽  
Tao Tian ◽  
Dong-Shan Gong ◽  
Guang-Chao Lv ◽  
...  
Keyword(s):  
Population Density ◽  
Soil Water ◽  
Water Availability ◽  
Soil Water Availability ◽  
Optimum Population

scholarly journals Ecometabolic mixture design-fingerprints from exploratory multi-block data analysis in Coffea arabica beans from climate changes: elevated carbon dioxide and reduced soil water availability

2021 ◽  
pp. 129716
Author(s):  
Gustavo Galo Marcheafave ◽  
Cláudia Domiciano Tormena ◽  
Amelia Elena Terrile ◽  
Carlos Alberto Rossi Salamanca-Neto ◽  
Elen Romão Sartori ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Data Analysis ◽  
Soil Water ◽  
Water Availability ◽  
Coffea Arabica ◽  
Climate Changes ◽  
Elevated Carbon Dioxide ◽  
Mixture Design ◽  
Soil Water Availability ◽  
Block Data

DROUGHT STRESS: Soil Water Availability Alters the Inter- and Intra-Cultivar Competition of Three Spring Wheat Cultivars Bred in Different Eras

2010 ◽  
Vol 196 (5) ◽  
pp. 323-335 ◽  
Author(s):  
L. Song ◽  
D.-W. Zhang ◽  
F.-M. Li ◽  
X.-W. Fan ◽  
Q. Ma ◽  
...  
Keyword(s):  
Drought Stress ◽  
Soil Water ◽  
Spring Wheat ◽  
Water Availability ◽  
Soil Water Availability ◽  
Wheat Cultivars

scholarly journals Sensitivity of soil water availability to changing snowmelt timing in the western U.S.

2015 ◽  
Vol 42 (19) ◽  
pp. 8011-8020 ◽  
Author(s):  
Adrian A. Harpold ◽  
Noah P. Molotch
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Soil Water Availability

scholarly journals Establishment of Brachiaria brizantha cv. Marandu, under levels of soil water availability in stages of growth of the plants

2011 ◽  
Vol 40 (7) ◽  
pp. 1405-1411 ◽  
Author(s):  
Leandro Coelho de Araujo ◽  
Patrícia Menezes Santos ◽  
Fernando Campos Mendonça ◽  
Gerson Barreto Mourão
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Soil Water Availability ◽  
Brachiaria Brizantha ◽  
Stages Of Growth
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