Tales from the underground: Soil heterogeneity and not only above‐ground plant interactions explain fine‐scale species patterns in a Mediterranean dwarf‐shrubland

2020 ◽  
Vol 31 (3) ◽  
pp. 497-508 ◽  
Author(s):  
David S. Pescador ◽  
Marcelino Cruz ◽  
Julia Chacón‐Labella ◽  
Javier Pavón‐García ◽  
Adrián Escudero
Keyword(s):  
Soil Heterogeneity ◽  
Fine Scale ◽  
Plant Interactions

Fine‐Scale Soil Heterogeneity at an Urban Site: Implications for Forest Restoration

2021 ◽  
Author(s):  
Jason Smith ◽  
Richard A Hallett ◽  
Maha Deeb ◽  
Peter M Groffman
Keyword(s):  
Forest Restoration ◽  
Soil Heterogeneity ◽  
Urban Site ◽  
Fine Scale

scholarly journals Co-occurring grassland species vary in their responses to fine-scale soil heterogeneity

2016 ◽  
Vol 27 (5) ◽  
pp. 1012-1022 ◽  
Author(s):  
Riin Tamme ◽  
Antonio Gazol ◽  
Jodi N. Price ◽  
Inga Hiiesalu ◽  
Meelis Pärtel
Keyword(s):  
Soil Heterogeneity ◽  
Fine Scale ◽  
Grassland Species

High Resolution Stereography of Complementary Freeze-Fracture Replicas Reveals the Presence of Depressions Opposite Membrane Associated Particles of Split Membranes

1971 ◽  
Vol 29 ◽  
pp. 442-443
Author(s):  
Russell L. Steere
Keyword(s):  
High Resolution ◽  
Cardiac Muscle ◽  
Electron Micrographs ◽  
Chromic Acid ◽  
Freeze Fracture ◽  
Distilled Water ◽  
Fine Scale ◽  
Acid Cleaning ◽  
Cleaning Solution

Complementary replicas have revealed the fact that the two common faces observed in electron micrographs of freeze-fracture and freeze-etch specimens are complementary to each other and are thus the new faces of a split membrane rather than the original inner and outer surfaces (1, 2 and personal observations). The big question raised by published electron micrographs is why do we not see depressions in the complementary face opposite membrane-associated particles? Reports have appeared indicating that some depressions do appear but complementarity on such a fine scale has yet to be shown.Dog cardiac muscle was perfused with glutaraldehyde, washed in distilled water, then transferred to 30% glycerol (material furnished by Dr. Joaquim Sommer, Duke Univ., and VA Hospital, Durham, N.C.). Small strips were freeze-fractured in a Denton Vacuum DFE-2 Freeze-Etch Unit with complementary replica tooling. Replicas were cleaned in chromic acid cleaning solution, then washed in 4 changes of distilled water and mounted on opposite sides of the center wire of a Formvar-coated grid.

Averting robo-bees: why free-flying robotic bees are a bad idea

2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin
Keyword(s):  
Climate Change ◽  
Computer Simulation ◽  
Food Security ◽  
European Countries ◽  
Plant Interactions ◽  
Plant Insect Interactions ◽  
Native Habitat ◽  
Insect Pollinators ◽  
Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

Non-consumptive predator effects intensify grazer–plant interactions by driving vertical habitat shifts

2015 ◽  
Vol 537 ◽  
pp. 49-58 ◽  
Author(s):  
A Davidson ◽  
JN Griffin ◽  
C Angelini ◽  
F Coleman ◽  
RL Atkins ◽  
...  
Keyword(s):  
Plant Interactions ◽  
Predator Effects

Fine-scale temporal study of the influence of hydrobiological conditions on the spawning of the sea urchin Strongylocentrotus intermedius

2016 ◽  
Vol 550 ◽  
pp. 147-161 ◽  
Author(s):  
PM Zhadan ◽  
MA Vaschenko ◽  
VB Lobanov ◽  
AF Sergeev ◽  
SA Kotova
Keyword(s):  
Sea Urchin ◽  
Strongylocentrotus Intermedius ◽  
Fine Scale ◽  
Temporal Study

Fine-scale taxonomic and temporal variability in the energy density of invertebrate prey of juvenile Chinook salmon Oncorhynchus tshawytscha

2020 ◽  
Vol 655 ◽  
pp. 185-198
Author(s):  
J Weil ◽  
WDP Duguid ◽  
F Juanes
Keyword(s):  
Energy Density ◽  
Chinook Salmon ◽  
Temporal Variability ◽  
Energy Content ◽  
Single Point ◽  
Single Species ◽  
Fine Scale ◽  
Temporal Differences ◽  
Juvenile Chinook Salmon ◽  
Juvenile Chinook

Variation in the energy content of prey can drive the diet choice, growth and ultimate survival of consumers. In Pacific salmon species, obtaining sufficient energy for rapid growth during early marine residence is hypothesized to reduce the risk of size-selective mortality. In order to determine the energetic benefit of feeding choices for individuals, accurate estimates of energy density (ED) across prey groups are required. Frequently, a single species is assumed to be representative of a larger taxonomic group or related species. Further, single-point estimates are often assumed to be representative of a group across seasons, despite temporal variability. To test the validity of these practices, we sampled zooplankton prey of juvenile Chinook salmon to investigate fine-scale taxonomic and temporal differences in ED. Using a recently developed model to estimate the ED of organisms using percent ash-free dry weight, we compared energy content of several groups that are typically grouped together in growth studies. Decapod megalopae were more energy rich than zoeae and showed family-level variability in ED. Amphipods showed significant species-level variability in ED. Temporal differences were observed, but patterns were not consistent among groups. Bioenergetic model simulations showed that growth rate of juvenile Chinook salmon was almost identical when prey ED values were calculated on a fine scale or on a taxon-averaged coarse scale. However, single-species representative calculations of prey ED yielded highly variable output in growth depending on the representative species used. These results suggest that the latter approach may yield significantly biased results.

Fine-scale habitat partitioning facilitates sympatry between two octopus species in a shallow Florida lagoon

2019 ◽  
Vol 609 ◽  
pp. 151-161 ◽  
Author(s):  
CO Bennice ◽  
AP Rayburn ◽  
WR Brooks ◽  
RT Hanlon
Keyword(s):  
Habitat Partitioning ◽  
Fine Scale

Small pelagic fish responses to fine-scale oceanographic conditions: implications for the endangered African penguin

2017 ◽  
Vol 569 ◽  
pp. 187-203 ◽  
Author(s):  
AM McInnes ◽  
PG Ryan ◽  
M Lacerda ◽  
J Deshayes ◽  
WS Goschen ◽  
...  
Keyword(s):  
Pelagic Fish ◽  
Fine Scale ◽  
Small Pelagic Fish ◽  
African Penguin ◽  
Oceanographic Conditions
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