Search results for "webs"
showing 10 items of 119 documents
Wood-inhabiting fungi with tight associations with other species have declined as a response to forest management
2017
Research on mutualistic and antagonistic networks, such as plant-pollinator and host-parasite networks, has shown that species interactions can influence and be influenced by the responses of species to environmental perturbations. Here we examine whether results obtained for directly observable networks generalize to more complex networks in which species interactions cannot be observed directly. As a case study, we consider data on the occurrences of 98 wood-inhabiting fungal species in managed and natural forests. We specifically ask if and how much the positions of wood-inhabiting fungal species within the interaction networks influence their responses to forest management. For this, we…
Assessing the influence of confounding biological factors when estimating bioaccumulation of PCBs with passive samplers in aquatic ecosystems
2017
Passive samplers are promising surrogates for organisms, mimicking bioaccumulation. However, several biological characteristics disturb the passive partitioning process in organisms by accelerating or restraining bioaccumulation, resulting in species-specific body residues of hydrophobic organic contaminants (HOCs). In addition to site-specific characteristics and HOC concentrations, age, sex, diet, biotransformation capability and habitat-specific characteristics may affect body residues. Two passive sampler types, polyethylene (PE) and polydimethylsiloxane (PDMS) were deployed in a PCB-contaminated freshwater lake water and sediment, respectively, to assess their bioaccumulation predictio…
Lake restoration influences nutritional quality of algae and consequently Daphnia biomass
2020
AbstractFood quality is one of the key factors influencing zooplankton population dynamics. Eutrophication drives phytoplankton communities toward the dominance of cyanobacteria, which means a decrease in the availability of sterols and long-chain polyunsaturated fatty acids (EPA and DHA). The effects of different restoration measures on the nutritional quality of the phytoplankton community and subsequent impacts on zooplankton biomass have rarely been considered. We analyzed the nutritional quality of phytoplankton in the eutrophic Lake Vesijärvi in southern Finland over a 37-year period, and studied the impacts of two restoration measures, biomanipulation and hypolimnetic aeration, on th…
Staging Rhetoric: Reading The White Devil’s Trial Scene
2014
the paper examines the trial scene in the White Devil within the context of rhetorical discourses of the period
Informācijas sistēma dokumentu pārvaldei
2021
Kvalifikācijas darba ietvaros darba autore izstrādāja tīmekļa vietnes dokumentāciju, kas ietver sevī prasību specifikāciju, projektējumu, testēšanas dokumentāciju, konfigurācijas pārvaldību un darbietilpības novērtējumu. “Informācijas sistēma dokumentu pārvaldei” ir vietne, kas nodrošina lietotājiem iespēju apskatīt ierakstus. Administratoram ir iespēja, detalizēti apskatīt ierakstus, izveidot jaunus ierakstus, kā arī rediģēt tos un dzēst. Vietni ir iespējams lietot, izmantojot interneta pārlūkprogrammu datorā vai planšetdatorā. Lietotne izstrādāta, izmantojot Microsoft ASP.NET Core atvērtā koda tīmekļa ietvaru. Kvalifikācijas darba nosaukums angļu vālodā " Information system for document m…
Corporate online presence : a study of eight Finnish exporting companies' corporate websites
2012
Yritykset käyttävät verkkosivujaan tuotteiden ja palveluiden markkinoinnin ohella myös yrityksen mainostamiseen ja verkkoidentiteetin luomiseen. Verkkoidentiteetti heijastaa kielen ja visuaalisen ilmeen kautta yrityksen identiteettiä sekä tavoiteltua yrityskuvaa. Tutkimuksen tavoitteena oli selvittää kriittisen diskurssianalyysin avulla millä tavalla suomalaiset vientiyritykset ilmentävät verkkoidentiteettiään sekä kielellisesti että visuaalisesti yritysprofiileissaan. Yritysprofiilit rakentuvat yritystarinoista, joiden tehtävänä on esitellä keskeisiä asioita yrityksestä ja samalla rakentaa tietynlaista kuvaa yrityksestä. Verkkoidentiteetin lisäksi tarkoituksena oli selvittää onko yritystar…
Location of navigation menus in websites: an experimental study with Arabic users
2015
Published online: 31 October 2015 While Arabic users represent by far the fastest growing language population on the Internet, research about how the peculiarities of Arabic language may shape users’ web interactions is still scarce. The preferences of Arabic users for menu location in websites have been studied. Two competing arguments have been proposed regarding the best location of menus in websites: conventional design (navigation menu should be placed on that side where users expect it based on previous experience) and reading direction (navigation menu should be placed on that side where readers are used to start off reading, so that the navigation menu is likely to be attended first…
Italian marine reserve effectiveness: does enforcement matter?
2008
Marine protected areas (MPAs) have become popular tools worldwide for ecosystem conservation and fishery management. Fish assemblages can benefit from protection provided by MPAs, especially those that include fully no-take reserves. Fish response to protection can thus be used to evaluate the effectiveness of marine reserves. Most target fish are high-level predators and their overfishing may affect entire communities through trophic cascades. In the Mediterranean rocky sublittoral, marine reserves may allow fish predators of sea urchins to recover and thus whole communities to be restored from coralline barrens to macroalgae. Such direct and indirect reserve effects, however, are likely t…
Lake size and fish diversity determine resource use and trophic position of a top predator in high-latitude lakes
2015
Prey preference of top predators and energy flow across habitat boundaries are of fundamental importance for structure and function of aquatic and terrestrial ecosystems, as they may have strong effects on production, species diversity, and food-web stability. In lakes, littoral and pelagic food-web compartments are typically coupled and controlled by generalist fish top predators. However, the extent and determinants of such coupling remains a topical area of ecological research and is largely unknown in oligotrophic high-latitude lakes. We analyzed food-web structure and resource use by a generalist top predator, the Arctic charr Salvelinus alpinus (L.), in 17 oligotrophic subarctic lakes…
Travelling to the green island full of shamrocks and pubs – or not : representations of Ireland in tourism web sites
2009
Matkailu on merkittävä tekijä elinkeinoelämässä, myös Irlannissa: kaikkiaan 5 % irlantilaisista työskenteli vuonna 2007 matkailualalla. Internet on yhä enenevässä määrin matkailun edistämiseen käytetty väylä. Matkailun kieli on oma diskurssinsa, jossa luodaan tietty kuva kohdemaasta ja sen kulttuurista. Matkailua edistävissä esitteissä, oppaissa ja WWW-sivuilla korostetaan tiettyjä asioita kun taas toiset asiat jätetään mainitsematta. Yleinen mainontastrategia on esittää kohdemaa mahdollisimman eksoottisena ja erilaisena kuin potentiaalisen asiakkaan oma kotimaa, jolloin korostetaan kohdemaan erikoisempia piirteitä. Kohteeseen liittyvien stereotypioiden hyödyntäminen on myös yleistä matkai…