scholarly journals The Plesiobiontic Association of Formica lemani Bondroit with Lasius flavus (Fabricius) (Hymenoptera, Formicidae) in Norway

Sociobiology ◽  
2017 ◽  
Vol 64 (3) ◽  
pp. 366
Author(s):  
Gunnar Mikalsen Kvifte ◽  
Thomas Aga Legøy ◽  
Jonathan Soulé
Keyword(s):  
Ecological Traits ◽  
Lasius Flavus ◽  
Western Norway ◽  
Landscape Ecological

Three compound nests of Formica lemani Bondroit, 1917 and Lasius flavus (Fabricius, 1782) are reported from Lygra, Western Norway. This is the first plesiobiontic relationship reported for F. lemani and the 9th for L. flavus. Behavioural and landscape ecological traits associated with plesiobiosis are discussed.

Behavior-based control of insect crop pests

2018 ◽  
Author(s):  
Sandra A. Allan
Keyword(s):  
Insect Pests ◽  
Control Strategies ◽  
Insect Behavior ◽  
Life Cycles ◽  
Economic Damage ◽  
Mass Trapping ◽  
Ecological Traits ◽  
Crop Pests ◽  
Effective Strategies ◽  
Crop Development

Manipulation of insect behavior can provide the foundation for effective strategies for control of insect crop pests. A detailed understanding of life cycles and the behavioral repertoires of insect pests is essential for development of this approach. A variety of strategies have been developed based on behavioral manipulation and include mass trapping, attract-and-kill, auto-dissemination, mating and host plant location disruption, and push-pull. Insight into application of these strategies for insect pests within Diptera, Lepidoptera, Coleoptera, and Hemiptera/Thysanoptera are provided, but first with an overview of economic damage and traditional control approaches, and overview of relevant behavioral/ecological traits. Then examples are provided of how these different control strategies are applied for each taxonomic group. The future of these approaches in the context of altered crop development for repellency or as anti-feedants, the effects of climate change and the risks of behaviorally-based methods are discussed.

scholarly journals Demographic developments in Stone Age coastal western Norway by proxy of radiocarbon dates, stray finds and palynological data

2021 ◽  
Vol 259 ◽  
pp. 106898
Author(s):  
Knut Andreas Bergsvik ◽  
Kim Darmark ◽  
Kari Loe Hjelle ◽  
Jostein Aksdal ◽  
Leif Inge Åstveit
Keyword(s):  
Stone Age ◽  
Radiocarbon Dates ◽  
Palynological Data ◽  
Western Norway

scholarly journals Landscape change patterns at three stages of the construction and operation of the TGP

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ruikang Li ◽  
Yangbing Li ◽  
Bo Li ◽  
Dianji Fu
Keyword(s):  
Landscape Pattern ◽  
Landscape Change ◽  
Ecological Security ◽  
Three Gorges ◽  
Temporal Characteristics ◽  
Landscape Type ◽  
The Three Gorges ◽  
Landscape Types ◽  
Landscape Ecological ◽  
Landscape Ecological Security

AbstractAnalyses of landscape change patterns that are based on elevation and slope can not only provide reasonable interpretations of landscape patterns but can also help to reveal evolutionary laws. However, landscape change patterns and their model in different landforms of the typical watershed in the Three Gorges Reservoir Area (TGRA) has not been quantified and assessed effectively. As a complex geographical unit, the ecological environment in the middle reach of the Yangtze River has experienced great changes due to the construction of the Three Gorges Project (TGP) and its associated human activities. Here, based mainly on a digital elevation model (DEM) and remotely sensed images from 1986, 2000, 2010, and 2017 and by using GIS technology, speeds/ trends of landscape change, the index of landscape type change intensity, landscape pattern indices, and landscape ecological security index, the spatial and temporal evolution characteristics of different elevations, slopes, and buffer landscape types were analyzed in typical watersheds, as well as an evolutionary model of the landscape pattern. The results indicated that (1) the landscape types along with the land classification and buffer zone that were influenced by the TGR construction have undergone a phased change, with the period 2000–2010 being the most dramatic period of landscape evolution during the impoundment period; (2) landscape type shifts from human-dominated farmland to nature-driven forestland and shrub-land as elevations, slopes and buffer distances increased. The landscape has shifted from diversity to relative homogeneity; (3) land types and buffer zones played essential roles in the landscape pattern index, which is reflected in the differences in landscape type indices for spatial extension and temporal characteristics. The results of this paper illustrate the spatial–temporal characteristics of various landscape types at three distinct stages in the construction of the TGR. These findings indicate that the landscape ecological security of the watershed is improving year by year. The follow-up development of the TGRA needs to consider the landscape change patterns of different landforms.

scholarly journals Construction of Landscape Fire Security Patterns for Minority Settlements: a case study of reconstruction plan of Xiaozhai village in Guangxi

2020 ◽  
Vol 194 ◽  
pp. 05035
Author(s):  
Manni Wu ◽  
Wenjun Zheng ◽  
Zonglin Liu
Keyword(s):  
Fire Protection ◽  
Water System ◽  
Forest Belt ◽  
Natural Fire ◽  
Pattern Theory ◽  
Planning And Design ◽  
Security Pattern ◽  
Resource Characteristics ◽  
Landscape Ecological ◽  
The Village

Minority settlements have good local landscape features and rich cultural heritage. However, due to complex geographical conditions and lagging economic development, there are many potential security threats in their human settlements. Based on the landscape ecological security pattern theory, aiming at eliminating the practical dilemma of frequent fires and difficult rescue in mountainous settlements in southwestern China, this paper proposes a planning idea to improve the settlement environment’s own disaster resilience and ecological endurance ability through the adjustment of landscape pattern. Taking the reconstruction planning and design of Xiaozhai Village in Longji of Guangxi province as an example, based on the geographical structure and resource characteristics of the village, a four-in-one landscape fire security pattern for mountain settlement is constructed, including building group, road evacuation system, natural fire protection network of water system and biological fire protection forest belt. The study provides a reference for the protection, renewal and re-planning of minority settlement.

Phylogenetic diversity and dominant ecological traits of freshwater Antarctic Chrysophyceae

Polar Biology ◽  
2021 ◽  
Author(s):  
Irina Izaguirre ◽  
Fernando Unrein ◽  
M. Romina Schiaffino ◽  
Enrique Lara ◽  
David Singer ◽  
...  
Keyword(s):  
Phylogenetic Diversity ◽  
Ecological Traits
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