59 research outputs found
ACCOUNTING FOR SUSTAINABILITY: WHAT NEXT? A RESEARCH AGENDA
This working paper responds to increasing calls for more and different forms of accounting research involvement in accounting for sustainability. It seeks to provide background, clarify the accounting research issues, and suggest research methods. The background analysis indicates that accounting for sustainability must go beyond supplemental reporting of ecological and social information to include such emerging issues as integrated reporting of sustainability information along with financial reporting. Additional emerging issues are needs of users of sustainability reports, auditing and other assurance of sustainability information, and sustainability implications of financial failure, accounting and auditing failures, and lack of enforcement. Analysis of integrated reporting against traditional financial accounting theory concepts of the purpose of financial reporting and the postulates of going concern, reporting entity, monetary unit, and time period, indicates a need for substantial changes in the traditional financial accounting model if sustainability issues are to be integrated. The agenda concludes with five research issues and methods: - An accounting research framework for sustainability using general systems theory approaches that have been useful for similar emerging issues. - Reporting of sustainability information which has been the focus of most research to date, and the emerging important topic of integrated reporting. - Users of sustainable information, their uses and perceived needs, an area that has been largely neglected in research to date.- Auditing and assurance issues that are taking on greater importance as more users demand assurance for sustainability information. Issues include standards to be used and users expectations and reactions. - Financial distress and sustainability consequences of accounting and enforcement failures that are just now being recognized as sustainability issues.accounting for sustainability, integrated reporting, needs of users, audit, assurance
Distribution and habitat of Scalpellidae (Cirripedia: Thoracica) in the Norwegian and Barents Seas
We describe the distribution and habitats of Amigdoscalpellum hispidum, Weltnerium stroemii, Scalpellum scalpellum, Weltnerium cornutum, Catherinum striolatum, Weltnerium nymphocola and Hamatoscalpellum hamatum in the Norwegian and Barents Seas, and their morphology. These are seven of the eight scalpellid species recorded in the area. Expeditions from 2006 to 2018 of the MAREANO (Marine areal database for Norwegian waters) programme have provided a comprehensive collection of Scalpellidae that can contribute to our knowledge of their distribution. The collections were from 335 localities in 40â2300â
m depth. Of the 1406 specimens collected, 1396 were collected by beam trawl and 37 were from grabs. Patchy distributions and the association of species with other organisms (e.g. hydroids and gorgonian corals) can explain the low abundance in grabs compared with beam trawls, the latter covering larger areas and mixed sediments better. Weltnerium stroemii was the most abundant species and had the largest depth and temperature range, followed by A. hispidum and W. nymphocola. Species were assigned into three geographic groups based on their depth distribution. Shelf species: W. stroemii, S. scalpellum and A. hispidum occurring mainly shallower than 400â
m in water temperatures >4°C; Upper slope species: W. nymphocola, W. cornutum and H. hamatum, found mainly between 600â1000â
m in temperatures from 4 to 0°C; Lower slope species: C. striolatum occurring below 1500â
m in temperatures <0°C. The species C. striolatum and W. cornutum are new to the Norwegian fauna and future deep-sea exploration will probably discover further scalpellid species.publishedVersio
Growth of capelin in relation to zooplankton biomass in the Barents Sea
Growth of capelin in the Barents Sea stock has been found to vary considerably both between
years and between different parts of the distribution area. The aim of this paper is to compare such
growth variations with measured abundance of zooplankton within the capelin feeding area.
In the period 1979-1984 a north-south transect in the Barents Sea was studied one to four times
during summer. A negative relationship between the plankton biomass and the density of capelin
along the section was evident. During the summer feeding migration the largest capelin, primarily
the oldest, but also the largest individuals of each age group, were found in the front of the northward
migration. Here they form a capelin front, which can be seen as eating its way through the
plankton distribution. Length and weight of capelin were positively correlated with plankton density
along the section.
From 1987 to 1994, zooplankton abundance has been recorded on several stations taken along the
track of an acoustic survey for capelin during September. The mean annual individual growth in
weight of capelin was found to be positively correlated with average zooplankton density. The
strongest relationships were found between one year old capelin and the smallest zooplankton
size fraction, and between three years old capelin and the largest size fraction of plankton. Capelin
length, weight and condition factor were also to some degree correlated with plankton density,
although significant results were found for only some combinations of capelin age group and zooplankton
size fraction
Design Considerations for a Directed Energy Deposition Cell
Setting up a robotised additive manufacturing machine requires attention to several safety aspects, including integration of different systems, a functional work area, human-machine interfaces and convenience in operation. This article presents some topics that should be considered in the design and assembly of a cell for robotised additive manufacturing. It is based on experiences from design and assembly of a cell for hybrid DED and grinding in the additive manufacturing laboratory at SINTEF Manufacturing. The cell is designed to ensure safe and stable operation of robot and build unit for additive manufacturing, and to achieve this it is constructed as a steel framework, covered with steel sheet metal and equipped with a ventilation system, laser-proof windows and a roll-up gate. A safety system was designed and integrated to ensure communication between the different elements operating in the cell and coordination of safety mechanisms.acceptedVersio
Seasonal development of plankton in the Barents Sea: A conceptual model
Capelin (Mallotus villosus) is a small salmonid fish that forms the
basis of one of the most important fisheries in the Barents Sea.
Relatively large variations in growth of capelin prompted
ecological investigations on the feeding conditions of capelin and
these were initiated by the Institute of Marine Research in 1979.
The studies were expanded in 1984 with the start of the Norwegian
Research Program for Marine Arctic Ecology (PRO MARE). A conceptual
model for the seasonal development of plankton has provided a
framework for our studies in the Barents Sea. The model emphasizes
the importance of the ice edge spring phytoplankton bloom for the
spawning and development of zooplankton and for the northwards
seasonal feeding migration of capelin. The model is reviewed in
light of field observations and some remaining key questions for
our further studies are pointed out. While the main elements of the
model have in broad terms been verified, it will in the future be
necessary to put more emphasis on large scale processes such as
transport of plankton by dominant currents and the ecological
feedback interactions such as predation by capelin and grazing by
zooplankton
Sluttrapport for overvükning av fiskeegg og -larver, samt dyreplankton pü Draupnerfeltet i Nordsjøen 1997-1998
Rapporten viser funn av fiskeegg, fiskelarver og dyreplankton pĂĽ Draupnerfeltet (58°11'N, 02°28'Ă) i Nordsjøen, fra mars 1997 til juli 1998. Vannsøylen ble undersøkt med hĂĽv to ganger i uken. Egg og larver av fisk var til stede i vesentlig antall fra februar til oktober. Sandflyndre var den vanligste arten, med gytesesong fra midten av februar til slutten av august. Etter sandflyndre var øyepĂĽl, gapeflyndre, makrell og skrubbe de mest tallrike artene. Calanius finmarchicus var den viktigste kopepoden hva biomassen angĂĽr, og nĂŚrmere 300 000 individer /m² ble registrert i mai 98. Den hadde minst tre generasjoner i ĂĽret :: This report is listing findings of fish eggs, fish larvae and zooplankton from Draupner in the North Sea (58°11' N, 02°28'E), from March 1997 to July 1998. Samples were collected with a WP2- net two times a week. Dab was the most numerous species, and eggs were abundant from February to August. Norway pout, long rough dab, mackerel and flounder were also common species. Calanus finmarchicus (copepoda) was numerous in the spring, reaching 300 000 individuals /m² in May 98. lt is assumed that C. finmarchicus produces 3-4 generations per year in the area
Spring phytoplankton development and zooplankton reproduction in the central Barents Sea in the period 1979-1984
The effect of oceanographic conditions on distribution and population dynamics of commercial fish stocks in the Barents Sea. Proceedings of the third Soviet-Norwegian Symposium. Murmansk, 26-28 May 1986.Physical and biological conditions have been studied along a fixed transect across the polar front in the central Barents Sea in late spring or early summer in each year from 1979 to 1984, These data are analysed with respeet
to the spring bloom development and zooplankton reproduction and the
influence of climatic conditions on these processes. Of the six years analysed, 1979 and 1981 were particularly cold years with
considerable melting of ice in Atlantic water south of the polar front. High
stability due to the meltwater gave rise to spring blooms that culminated as
much as 4-6 weeks earlier than in the warmer years when stability in the
Atlantic water arose due to the atmospheric warming of the sea surface.
Spawning of the dominant herbivore , calanus finmarchicus , evidently oceurred
in early spring (late April - early May), as evidenced by dominance of
copepodites in stages C1 to CIV in June. The degree of copepodite
development in the different years was related to the time of sarnpiirig, water
coiumri stability, and temperature, The timing of the copepodite development
was less variable than, and showed no clear-cut relationship to, the timing of
the spring bloom. This could reflect slower development of Calanus in cold
years with early spring blooms. Reproduction of krill and Metridia longa
oceurred als0 in early spring. Due to the more rapid development and early culmination of blooms in Atlantic
water infiuenced by melting of ice, we expect the conversion efficiency of
primary to pelagic secondary production to be generally lower in cold years
than in warm years. Such a relationship is not evident, however , in the data
for the period 1979-1984. The produced zooplankton biomass and numbers of
Calanus copepodites were on the contrary extremely low in 1983 and 1984
which were warm years. Grazing by pelagic fish and advective transport of
plankton are factors whieh need to be taken into consideration. The timing of
iriflow events of Atlantic water to the Barents Sea in relation to the seasonal
vertieal migration of Calanus finmarchieus in the Norwegian Sea could be of
partieular importanee in this respect
Reproduction of zooplankton in relation to initiation of spring phytoplankton bloom in the Barents Sea
The phytoplankton spring bloom development and zooplankton
reproduction were investigated in April 1986 in the central and
northern Barents Sea. Different stages of phytoplankton bloom
development were found, reflecting differences in water column
stability and illumination due to ice melting. Eggs and nauplii
of Calanus, Pseudocalanus, Microcalanus and Oithona spp.
occurred mostly in the upper 50 m without any pronounced maxima
in their vertical distributions. The total numbers of eggs and
nauplii of Calanus finmarchicus and C. glacialis tended to be
higher at bloom stations than at pre-bloom stations, and also
to show a general increase during the investigation period. The
start of spawning was estimated to early February and was not
influenced by the phytoplankton bloom development. Neither did
the developmental state of the copepodite population seem to be
influenced by the bloom development. The spawning activity,
however, seemed to have a maximum coinciding with the early
phase of the bloom development
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