scholarly journals Herbivory drives large‐scale spatial variation in reef fish trophic interactions

2014 ◽  
Vol 4 (23) ◽  
pp. 4553-4566 ◽  
Author(s):  
Guilherme O. Longo ◽  
Carlos Eduardo L. Ferreira ◽  
Sergio R. Floeter
Keyword(s):  
Spatial Variation ◽  
Reef Fish ◽  
Trophic Interactions ◽  
Large Scale

scholarly journals Spatial variation and mechanisms of leaf water content in grassland plants at the biome scale: evidence from three comparative transects

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ruomeng Wang ◽  
Nianpeng He ◽  
Shenggong Li ◽  
Li Xu ◽  
Mingxu Li
Keyword(s):  
Spatial Variation ◽  
Water Content ◽  
Large Scale ◽  
Life Forms ◽  
Important Variable ◽  
Leaf Water ◽  
Leaf Water Content ◽  
Desert Grassland ◽  
Large Spatial Scale ◽  
Grassland Plants

AbstractLeaf water content (LWC) has important physiological and ecological significance for plant growth. However, it is still unclear how LWC varies over large spatial scale and with plant adaptation strategies. Here, we measured the LWC of 1365 grassland plants, along three comparative precipitation transects from meadow to desert on the Mongolia Plateau (MP), Loess Plateau, and Tibetan Plateau, respectively, to explore its spatial variation and the underlying mechanisms that determine this variation. The LWC data were normally distributed with an average value of 0.66 g g−1. LWC was not significantly different among the three plateaus, but it differed significantly among different plant life forms. Spatially, LWC in the three plateaus all decreased and then increased from meadow to desert grassland along a precipitation gradient. Unexpectedly, climate and genetic evolution only explained a small proportion of the spatial variation of LWC in all plateaus, and LWC was only weakly correlated with precipitation in the water-limited MP. Overall, the lasso variation in LWC with precipitation in all plateaus represented an underlying trade-off between structural investment and water income in plants, for better survival in various environments. In brief, plants should invest less to thrive in a humid environment (meadow), increase more investment to keep a relatively stable LWC in a drying environment, and have high investment to hold higher LWC in a dry environment (desert). Combined, these results indicate that LWC should be an important variable in future studies of large-scale trait variations.

scholarly journals Mapping the spatial variation of soil moisture at the large scale using GPR for pavement applications

2014 ◽  
Vol 13 (3) ◽  
pp. 269-278 ◽  
Author(s):  
Andrea Benedetto ◽  
Fabio Tosti ◽  
Bianca Ortuani ◽  
Mauro Giudici ◽  
Mauro Mele
Keyword(s):  
Soil Moisture ◽  
Spatial Variation ◽  
Large Scale

scholarly journals Large-scale spatial variation of chronic stress signals in moose

PLoS ONE ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. e0225990
Author(s):  
Göran Spong ◽  
Nicholas P. Gould ◽  
Ellinor Sahlén ◽  
Joris P. G. M. Cromsigt ◽  
Jonas Kindberg ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Chronic Stress ◽  
Large Scale ◽  
Stress Signals

Large-scale trophic interactions: White-tailed deer growth and forest understory

Ecoscience ◽  
2004 ◽  
Vol 11 (3) ◽  
pp. 286-295 ◽  
Author(s):  
Stéphanie Boucher ◽  
Michel Crête ◽  
Jean-Pierre Ouellet ◽  
Claude Daigle ◽  
Louis Lesage
Keyword(s):  
Trophic Interactions ◽  
Large Scale ◽  
Forest Understory

Bioturbation, microbial activity and sediment properties in an estuarine ecosystem

1986 ◽  
Vol 90 ◽  
pp. 129-142 ◽  
Author(s):  
P. S. Meadows ◽  
A. Tufail
Keyword(s):  
Spatial Variation ◽  
Microbial Activity ◽  
Large Scale ◽  
Chemical Properties ◽  
Estuarine Sediments ◽  
Sediment Stability ◽  
Estuarine Ecosystem ◽  
Particle Sedimentation ◽  
Geochemical Properties ◽  
Sea Bed

SynopsisMacrobenthic bioturbation and microbial activity can have major ecological effects on present day marine sediments some of which are also seen in the fossil record. The coastal and estuarine sediments in the Clyde Estuary area are described. They contain very high densities of benthic macroorganisms and microorganisms. These organisms have dramatic effects on the physical and chemical properties of sediments, and field and laboratory studies have shown that many geotechnical and geochemical properties of sediments are dictated by them. The effects can be on a microscale of a few millimetres horizontally or vertically (micro-spatial variation), or can have large scale consequences over hundreds of metres (macro-spatial variation).Sediment stability (shear strength and critical erosion velocity), permeability and particle sedimentation are all altered by macro-invertebrate bioturbation or microbial activity, and many chemical properties such as Eh and pH may be influenced in a similar manner.Biological activity may therefore play a major role in modifying sediment geotechnics and early sediment diagenesis. It also has direct relevance to the siting of man-made structures on the sea-bed and to sediment stability and transport in estuaries.In situseeding experiments may lead to biological control and manipulation of these most important field phenomena.

scholarly journals Large‐scale spatial variation in feather corticosterone in invasive house sparrows ( P asser domesticus ) in M exico is related to climate

2015 ◽  
Vol 5 (17) ◽  
pp. 3808-3817 ◽  
Author(s):  
Gillian D. Treen ◽  
Keith A. Hobson ◽  
Tracy A. Marchant ◽  
Gary R. Bortolotti
Keyword(s):  
Spatial Variation ◽  
Large Scale ◽  
House Sparrows ◽  
Feather Corticosterone
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