Genetic polymorphism in prey preference at a small spatial scale: a case study of soil predatory mites (Hypoaspis aculeifer) and two species of astigmatic mites as prey

2002 ◽  
pp. 49-64 ◽  
Author(s):  
Izabela Lesna ◽  
Maurice W. Sabelis
Keyword(s):  
Genetic Polymorphism ◽  
Spatial Scale ◽  
Predatory Mites ◽  
Prey Preference ◽  
Small Spatial Scale ◽  
Hypoaspis Aculeifer

scholarly journals Patterns of plant invasions at small spatial scale correspond with that at the whole country scale

2016 ◽  
Vol 19 (2) ◽  
pp. 983-998 ◽  
Author(s):  
Marcin K. Dyderski ◽  
Andrzej M. Jagodziński
Keyword(s):  
Spatial Scale ◽  
Plant Invasions ◽  
Small Spatial Scale

The Subnational Region

2017 ◽  
pp. 96-115 ◽  
Author(s):  
Alexander Lawrie
Keyword(s):  
Spatial Scale ◽  
Soft Power ◽  
Regional Governance ◽  
The State ◽  
Hard Power ◽  
Local Actors ◽  
Sydney Australia ◽  
The Ideal

Most states worldwide possess two or three levels of government, from national to provincial and localities. Subnational governing arrangements are emerging in response to widespread decentralization, globalization, and urbanization, with this level increasingly considered the ideal spatial scale for effectively harnessing governing capacity. Yet regional governing arrangements often lack the traditional statutory and administrative governing tools of the state. Instead, they tend to rely on voluntary co-ordination and co-operation. Emboldened with more traditional governing tools, provincial and local states can work against these networks to protect their own power. This case study of Sydney, Australia, examines the dimensions of hard and soft power in a regional governing network and the role of provincial and local actors in determining the prospects for regional governance. In the absence of state-like mechanisms of hard power, the soft power on which regional governing networks rely will likely remain inferior for the governing task.

Free living nematodes as alternative prey for soil predatory mites: An interdisciplinary case study of conservation biological control

2019 ◽  
Vol 132 ◽  
pp. 128-134 ◽  
Author(s):  
L.H. Azevedo ◽  
L.G. Leite ◽  
J.G. Chacon-Orozco ◽  
M.F.P. Moreira ◽  
M.P. Ferreira ◽  
...  
Keyword(s):  
Biological Control ◽  
Predatory Mites ◽  
Conservation Biological Control ◽  
Alternative Prey ◽  
Free Living

scholarly journals Seasonality and Small Spatial-Scale Variation of Chlorophyll a Fluorescence in Bryophyte Syntrichia ruralis [Hedw.] in Semi-Arid Sandy Grassland, Hungary

Plants ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 92 ◽  
Author(s):  
Ruchika ◽  
Zsolt Csintalan ◽  
Evelin Ramóna Péli
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quenching ◽  
Spatial Scale ◽  
Chlorophyll A ◽  
Chlorophyll A Fluorescence ◽  
Small Spatial Scale ◽  
Variation Trend ◽  
Fluorescence Parameters ◽  
Semi Arid ◽  
Sandy Grassland

Bryophytes face challenges due to global climate change which is leading to in-depth research in monitoring and studying their photosynthetic activity. The aim of this preliminary experiment was to study the seasonal variation trend in the chlorophyll a fluorescence parameters, Fv/Fm (ratio of variable to maximum fluorescence), photochemical fluorescence quenching (qP), photochemical quantum yield of photosystem II (ΦPS II), fluorescence quenching (qN), and non-photochemical quenching (NPQ), in the moss cushions of Syntrichia ruralis [Hedw.] collected from semi-arid sandy dunes for two slopes i.e., north-east (NE) and south-west (SW) direction. Our results showed a seasonal and small-spatial scale variation trend in all chlorophyll fluorescence parameters. These variations are due to different seasonal conditions referring to different degrees of environmental stress. ΦPS II and qP values were maximum in winter and in spring seasons while Fv/Fm, NPQ and qN were maximum in summer. Based on the different exposition of dunes, the SW slope showed increased values of the effective quantum yield of PS II and qP in comparison to the NE slope due to the optimal microclimate conditions for their expansion. These results may refer to the future changing in diversification and coverage of the Syntrichia species in semi-arid sandy grassland due to more effective metabolism in the beneficial microclimatic conditions.

Gene flow maintains a large genetic difference in clutch size at a small spatial scale

Nature ◽  
2005 ◽  
Vol 433 (7021) ◽  
pp. 65-68 ◽  
Author(s):  
Erik Postma ◽  
Arie J. van Noordwijk
Keyword(s):  
Gene Flow ◽  
Spatial Scale ◽  
Clutch Size ◽  
Genetic Difference ◽  
Small Spatial Scale

Opposing selective pressures decouple pattern and process of parasitic infection over small spatial scale

Oikos ◽  
2015 ◽  
Vol 124 (11) ◽  
pp. 1511-1519 ◽  
Author(s):  
James E. Byers ◽  
Anna J. Malek ◽  
Lauren E. Quevillon ◽  
Irit Altman ◽  
Carolyn L. Keogh
Keyword(s):  
Spatial Scale ◽  
Parasitic Infection ◽  
Small Spatial Scale ◽  
Pattern And Process ◽  
Selective Pressures

Meiofauna constitute a considerable portion of invertebrate drift among moss-rich patches within a karst hydrosystem

Biologia ◽  
2014 ◽  
Vol 69 (3) ◽  
Author(s):  
Mirela Perić ◽  
Tvrtko Dražina ◽  
Maria Špoljar ◽  
Ines Radanović ◽  
Biserka Primc ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Spatial Scale ◽  
Early Summer ◽  
Small Scale ◽  
Invertebrate Drift ◽  
Flow Conditions ◽  
Small Spatial Scale ◽  
Minor Influence ◽  
Drift Density ◽  
A Minor

AbstractAiming to establish the most frequent invertebrate taxa in drift at the small spatial scale within a moss-rich karst tufa-precipitating hydrosystem, we sampled drift among microhabitats differing in substratum type and flow conditions along a tufa barrier-cascading lotic reach. Additionally, we addressed the question of the contribution and the potential significance of meiofauna within the overall invertebrate drift at the small spatial scale. During the study period, a total of 60 invertebrate taxa were recorded in the drift. Six of these taxa belonged to the annelid/arthropod meiofauna and they represented 35% of total drift density. Macroinvertebrates found in drift were represented mainly by larval insects. The composition of the most abundant taxa in total drift was as follows: Alona spp. (Cladocera 26.7%), Riolus spp. (Coleoptera: Elmidae 13.2%), Simulium spp. (Diptera: Simuliidae 12.2%), Enchytraeidae (Oligochaeta 10.4%), Hydrachnidia (6.3%), Orthocladinae (Diptera: Chironomidae 3.9%) and Naididae (Oligochaeta 3.6%). Faunal drift densities and amounts of transported particulate matter (PM) were highest at the fast-flowing sites located at the barriers and lowest at the slow-flowing sites within pools. Similarly to the seasonal amounts of transported PM, faunal drift was lowest in winter, and peaked in autumn and in late spring/early summer. Correlation between flow velocity and PM-faunal drift densities suggested a significant effect of the dislodged PM, though a minor influence of discharge and flow velocity on faunal drift. We suggest that the small-scale habitat heterogeneity and the respective feeding and refugial strategies of the fauna, as well as faunal passive dislodgement initiated by the shear forces of the flow were the most important drivers of observed drift patterns.

scholarly journals Assessing the impact of introduced infrastructure at sea with cameras: A case study for spatial scale, time and statistical power

2019 ◽  
Vol 147 ◽  
pp. 126-137 ◽  
Author(s):  
Anthony W.J. Bicknell ◽  
Emma V. Sheehan ◽  
Brendan J. Godley ◽  
Philip D. Doherty ◽  
Matthew J. Witt
Keyword(s):  
Spatial Scale ◽  
Statistical Power ◽  
The Impact
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