نتایج جستجو برای: ecological conditions

تعداد نتایج: 935412  

Journal: : 2022

Wild boar population (Sus scrofa) has been growing rapidly in most countries of the world over past decades. The invasive species high reproduction rates and well-developed adaptive responses, which allows it to successfully expand boundaries its habitat, create significant economic losses agriculture horticulture, urban ecosystems, threatens loss biological diversity spread zoonotic infections...

Journal: :E3S web of conferences 2023

In modern conditions, without the implementation of projects related to introduction new technologies and developments, taking into account environmental social responsibility business, it is impossible for companies achieve sustainable development. The article studies problems innovative activity submits model management in conditions intensive purpose creation business streamlining. proposed ...

2013
Michael Kubach Heiko Rossnagel Rachelle Sellung

Although eID technology has undergone several development cycles and eID have been issued to citizens of various European countries, it is still not as broadly used as originally expected. One reason is the absence of compelling use cases besides eGovernment. Current Research focuses mainly on the needs of the user and technical aspects. The economic perspective is often disregarded. This is es...

Journal: :Interface focus 2012
Daniel Grünbaum

Most ecological interactions occur in environments that are spatially and temporally heterogeneous-'patchy'-across a wide range of scales. In contrast, most theoretical models of ecological interactions, especially large-scale models applied to societal issues such as climate change, resource management and human health, are based on 'mean field' approaches in which the underlying patchiness of...

Journal: :Sustainability 2021

The combined impacts of drastic natural environment change and increasing human interference are making the uncertainty Tibetan Plateau’s ecological vulnerability world’s largest. In this study, an index (EVI) Tibet in core area Plateau was assessed using a selected set ecological, social, economic indicators spatial principal component analysis (SPCA) to calculate their weights. data included ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Jan Martin Nordbotten Nils C Stenseth

Four decades ago, Leigh Van Valen presented the Red Queen's hypothesis to account for evolution of species within a multispecies ecological community [Van Valen L (1973) Evol Theory 1(1):1-30]. The overall conclusion of Van Valen's analysis was that evolution would continue even in the absence of abiotic perturbations. Stenseth and Maynard Smith presented in 1984 [Stenseth NC, Maynard Smith J (...

Journal: :The American naturalist 2011
David A Vasseur Priyanga Amarasekare Volker H W Rudolf Jonathan M Levine

Recent studies suggest that selection can allow coexistence in situations where ecological dynamics lead to competitive exclusion, provided that there is a trade-off between traits optimal for interacting with conspecifics and traits optimal for interacting with heterospecifics. Despite compelling empirical evidence, there is no general framework for elucidating how and when selection will allo...

2006
Sumatra Nord

Rates in rupees are valid in India & South Asia only / Les tarifs en roupies sont valables en Inde et en Asie du Sud seulement A vegetation map may be considered in different ways, for instance as a physiognomic map showing the present state of the vegetation, or as a land use survey map. A useful purpose of this kind of map is to show the possibilities of improving production. For this we must...

Journal: :Vestnik of Astrakhan State Technical University. Series: Fishing industry 2017

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