Gotowe bibliografie tematyczne / Marine invertebrates – North Sea

Gotowa bibliografia na temat „Marine invertebrates – North Sea”

Autor: Grafiati
Data publikacji: 25 lipca 2024

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Spis treści

Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Marine invertebrates – North Sea”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Artykuły w czasopismach na temat "Marine invertebrates – North Sea"

1

Greenstreet, Simon P. R., Helen M. Fraser i Gerjan J. Piet. "Using MPAs to address regional-scale ecological objectives in the North Sea: modelling the effects of fishing effort displacement". ICES Journal of Marine Science 66, nr 1 (1.01.2009): 90–100. http://dx.doi.org/10.1093/icesjms/fsn214.

Pełny tekst źródła
Streszczenie:
Abstract Greenstreet, S. P. R., Fraser, H. M., and Piet, G. J. 2009. Using MPAs to address regional-scale ecological objectives in the North Sea: modelling the effects of fishing effort displacement. – ICES Journal of Marine Science, 66: 90–100. The use of Marine Protected Areas (MPAs) to address regional-scale objectives as part of an ecosystem approach to management in the North Sea is examined. Ensuring that displacement of fishing activity does not negate the ecological benefits gained from MPAs is a major concern. Two scenarios are considered: using MPAs to safeguard important areas for groundfish species diversity and using them to reduce fishing impacts on benthic invertebrates. Appropriate MPAs were identified using benthic invertebrate and fish abundance data. Fishing effort redistribution was modelled using international landings and fishing effort data. Closing 7.7% of the North Sea to protect groundfish species diversity increased the fishing impact on benthic invertebrates. Closing 7.3% of the North Sea specifically to protect benthic invertebrates reduced fishing mortality by just 1.7–3.8%, but when combined with appropriate reductions in total allowable catch (TAC), 16.2–17.4% reductions in fishing mortality were achieved. MPAs on their own are unlikely to achieve significant regional-scale ecosystem benefits, because local gains are largely negated by fishing effort displacement into the remainder of the North Sea. However, in combination with appropriate TAC reductions, the effectiveness of MPAs may be enhanced.
Style APA, Harvard, Vancouver, ISO itp.
2

Bourgeois-Roy, Andréanne, Hugo Crites, Pascal Bernatchez, Denis Lacelle i André Martel. "Abrupt mortality of marine invertebrates at the Younger Dryas-Holocene transition in a shallow inlet of the Goldthwait Sea". Holocene 28, nr 12 (10.09.2018): 1894–908. http://dx.doi.org/10.1177/0959683618798130.

Pełny tekst źródła
Streszczenie:
The late Pleistocene–early Holocene transition period was characterized by rapid environmental change. Here, we investigate the impact of these changes on the marine invertebrates living in a shallow inlet of the post-glacial Goldthwait Sea. The site is located near Baie-Comeau (QC, Canada), where a number of remarkably well-preserved shell deposits are found along the Rivière aux Anglais Valley on the north shore of the St. Lawrence maritime estuary. Seven phyla of marine invertebrates with a minimum of 25 species or taxa were inventoried in a shell deposit, dominated by a community of Hiatella arctica with Mytilus edulis and barnacles composing the subcommunity. The majority of taxa identified in the shell deposit are boreal and sub-Arctic species; however, temperate species that exist today in the St. Lawrence maritime estuary have not been found. Based on marine invertebrate diversity and δ18O(CaCO3) of Mytilus edulis, the water in the shallow inlet of the Goldthwait Sea must have been cold and saline. The range of AMS 14C ages from 15 Mytilus edulis, constrained to 10,900 and 10,690 cal. yr BP, and exceptional state of preservation of adult and juvenile molluscan specimens suggest the abrupt mortality of entire invertebrate communities due to changing hydrodynamic conditions that included the combined effect of freshwater discharge from the receding Laurentide Ice Sheet and rapid isostatic uplift.
Style APA, Harvard, Vancouver, ISO itp.
3

Robinson, L. A., S. P. R. Greenstreet, H. Reiss, R. Callaway, J. Craeymeersch, I. de Boois, S. Degraer i in. "Length–weight relationships of 216 North Sea benthic invertebrates and fish". Journal of the Marine Biological Association of the United Kingdom 90, nr 1 (14.01.2010): 95–104. http://dx.doi.org/10.1017/s0025315409991408.

Pełny tekst źródła
Streszczenie:
Size-based analyses of marine animals are increasingly used to improve understanding of community structure and function. However, the resources required to record individual body weights for benthic animals, where the number of individuals can reach several thousand in a square metre, are often prohibitive. Here we present morphometric (length–weight) relationships for 216 benthic species from the North Sea to permit weight estimation from length measurements. These relationships were calculated using data collected over two years from 283 stations. For ten abundant and widely dispersed species we tested for significant spatial and temporal differences in morphometric relationships. Some were found, but the magnitude of differences was small in relation to the size-ranges of animals that are usually present and we recommend that the regression relationships given here, based on pooled data, are appropriate for most types of population and community analyses. Our hope is that the availability of these morphometric relationships will encourage the more frequent application of size-based analyses to benthic survey data, and so enhance understanding of the ecology of the benthic/demersal component of marine ecosystems and food webs.
Style APA, Harvard, Vancouver, ISO itp.
4

Antoniadou, Chryssanthi, Martha Pantelidou, Maria Skoularikou i Chariton Charles Chintiroglou. "Mass Mortality of Shallow-Water Temperate Corals in Marine Protected Areas of the North Aegean Sea (Eastern Mediterranean)". Hydrobiology 2, nr 2 (30.04.2023): 311–25. http://dx.doi.org/10.3390/hydrobiology2020020.

Pełny tekst źródła
Streszczenie:
Coral mortality is a global phenomenon of increasing magnitude, correlated with climate change. Prolonged marine heatwaves have particularly affected the north Aegean Sea in summer 2021, threatening shallow-water stony corals, such as Balanophyllia europaea and Cladocora caespitosa. To assess their population status, ten coastal, rocky-bottom stations dispersed in Natura 2000 sites of Chalkidiki (north Aegean) were surveyed using non-destructive techniques in autumn 2021. At each station, corals’ abundance was estimated in situ, by counting the number of B. europaea polyps within randomly placed 50 × 50 cm quadrats, and the number of C. caespitosa colonies along three replicate belt transects 1 × 10 m. The status of corals was qualitatively assigned as healthy, bleached (partially or complete), or in necrosis (partial or complete). B. europaea was found in 80% of stations; in total, 58.17% of the coral specimens were affected by necrosis. C. caespitosa was found in 30% of stations; in total, 27.49% of the coral colonies were partially bleached and 11.32% in necrosis. Another nine sessile invertebrates (sponges, bivalves, and ascidians) were observed in necrosis. These results highlight the need to establish monitoring programs on vulnerable sessile invertebrate populations along the Aegean Sea to assess climate change impacts.
Style APA, Harvard, Vancouver, ISO itp.
5

Dyer, M. F. "The Distribution of Hyas Araneus (L.) and Hyas Coarctatus Leach (Crustacea: Decapoda: Brachyura) in the North Sea and the Svalbard Region". Journal of the Marine Biological Association of the United Kingdom 65, nr 1 (luty 1985): 195–201. http://dx.doi.org/10.1017/s0025315400060902.

Pełny tekst źródła
Streszczenie:
The distribution patterns of many marine benthic invertebrates are not well known, and when records exist they are usually in the form of presence and absence data with little or no information on the relative density of populations from area to area.
Style APA, Harvard, Vancouver, ISO itp.
6

Ivanova, Elena P., Olga I. Nedashkovskaya, Tomoo Sawabe, Natalia V. Zhukova, Galina M. Frolova, Dan V. Nicolau, Valery V. Mikhailov i John P. Bowman. "Shewanella affinis sp. nov., isolated from marine invertebrates". International Journal of Systematic and Evolutionary Microbiology 54, nr 4 (1.07.2004): 1089–93. http://dx.doi.org/10.1099/ijs.0.02992-0.

Pełny tekst źródła
Streszczenie:
Four marine bacterial strains, designated KMM 3587T, KMM 3586, KMM 3821 and KMM 3822, were isolated from the sipuncula Phascolosoma japonicum, a common inhabitant of Troitza Bay in the Gulf of Peter the Great (Sea of Japan region), and from an unidentified hydrocoral species collected in Makarov Bay (Iturup Islands), Kuril Islands, North-West Pacific Ocean. The strains were characterized to clarify their taxonomic position. 16S rRNA gene sequences of KMM 3587T and KMM 3586 indicated 99 % similarity to Shewanella colwelliana. Despite such a high level of 16S rRNA gene sequence similarity, DNA–DNA hybridization experiments demonstrated only 45–52 % binding with DNA of S. colwelliana ATCC 39565T. The DNA G+C contents of the novel strains were 45 mol% and the shared level of DNA hybridization was conspecific (81–97 %), indicating that they represent a single genospecies. The novel strains were mesophilic (able to grow at 10–34 °C), neutrophilic and haemolytic, and able to degrade gelatin, casein and Tween 20, 40 and 80, but not starch, agar, elastin, alginate or chitin. The major fatty acids were i13 : 0, i15 : 0, 16 : 0, 16 : 1ω7 and 17 : 1ω8 (68·9 % of total). The major isoprenoid quinones were Q7 (47–62 %) and Q8 (26–47 %). Eicosapentaenoic acid was produced in minor amounts. Based on these data, the strains are assigned to a novel species, Shewanella affinis sp. nov. (type strain KMM 3587T=CIP 107703T=ATCC BAA-642T).
Style APA, Harvard, Vancouver, ISO itp.
7

Moss, Madonna L. "Did Tlingit Ancestors Eat Sea Otters? Addressing Intellectual Property and Cultural Heritage through Zooarchaeology". American Antiquity 85, nr 2 (11.02.2020): 202–21. http://dx.doi.org/10.1017/aaq.2019.101.

Pełny tekst źródła
Streszczenie:
The maritime fur trade caused the extirpation of sea otters from southeast Alaska. In the 1960s, sea otters were reintroduced, and their numbers have increased. Now, sea otters are competing with people for what have become commercially important invertebrates. After having been absent for more than a century, the reentry of this keystone species has unsettled people. Although some communities perceive sea otters as a threat to their livelihoods, others view their return as restoration of the marine ecosystem. The federal Marine Mammal Protection Act authorizes any Alaska Native to harvest sea otters for subsistence provided that the harvest is not wasteful. Some people are seeking to define “traditional” Tlingit use of sea otters as not only using their pelts but consuming them as food, but some Tlingit maintain they never ate sea otters. This project analyzes the largest precontact archaeological assemblage of sea otter bones in southeast Alaska, with the benefit of insights gained from observing a Tlingit hunter skin a sea otter to infer that Tlingit ancestors hunted sea otters primarily for pelts. The extent to which other Indigenous peoples of the North Pacific consumed sea otters as food deserves investigation, especially as sea otters recolonize their historic range.
Style APA, Harvard, Vancouver, ISO itp.
8

Rueda, José L., Ana Mena-Torres, Marina Gallardo-Núñez, Emilio González-García, Alejandro Martín-Arjona, Javier Valenzuela, Cristina García-Ruiz i in. "Spatial Distribution and Potential Impact of Drifted Thalli of the Invasive Alga Rugulopteryx okamurae in Circalittoral and Bathyal Habitats of the Northern Strait of Gibraltar and the Alboran Sea". Diversity 15, nr 12 (7.12.2023): 1206. http://dx.doi.org/10.3390/d15121206.

Pełny tekst źródła
Streszczenie:
The arrival of a new invasive alga, Rugulopteryx okamurae, in the Strait of Gibraltar (SoG) in 2015 marked an unprecedented milestone in the North African and, later, in the European marine ecosystems. Nowadays, it is colonising vast infralittoral areas and significantly modifying some habitats and associated communities of the southern Iberian Peninsula. In recent expeditions, a high amount of free drifted thalli of this alga has been detected in different circalittoral and bathyal habitats of the northern SoG and the Alboran Sea. The present study combines quantitative data of this alga obtained with the use of a remotely operated vehicle (ROV) and a bottom otter trawl. The coverage–entanglement level of the drifted thalli on circalittoral and bathyal benthic invertebrates (e.g., not covering, covering only the basal part, covering one-third of the invertebrate, etc.) was also annotated from picture frames taken in locations with abundant drifted thalli. In underwater images, drifted thalli were mainly detected in circalittoral and bathyal bottoms of the northern SoG and the north-western Alboran Sea, between 50 to ca. 450 m depth. Nevertheless, abundant drifted thalli were also detected in bottom otter trawl samples from circalittoral bottoms of the north-central and north-eastern Alboran Sea. Small benthic organisms (e.g., encrusting sponges, hydrozoans, etc.) generally displayed low coverage–entanglement levels of drifted thalli. Nevertheless, large sessile and colonial benthic organisms with a complex three-dimensional morphology (e.g., gorgonians, colonial scleractinians) reached high levels of R. okamurae thalli entangled in different parts of their colonies. The drifted R. okamurae thalli entangled in these colonial suspension feeding organisms may hinder their feeding capability in the long term, resulting in habitat deterioration in the near future.
Style APA, Harvard, Vancouver, ISO itp.
9

Scinto, Alice, Giorgio Bavestrello, Massimo Boyer, Monica Previati i Carlo Cerrano. "Gorgonian mortality related to a massive attack by caprellids in the Bunaken Marine Park (North Sulawesi, Indonesia)". Journal of the Marine Biological Association of the United Kingdom 88, nr 4 (25.06.2008): 723–27. http://dx.doi.org/10.1017/s002531540800129x.

Pełny tekst źródła
Streszczenie:
A massive attack of caprellids is reported here, that is related to a local mortality event of gorgonians in North Sulawesi. Three species of sea fans were affected by the presence of Metaprotella sandalensis, a caprellid widely distributed in the Indo-Pacific. The degree of damage here documented was in relation to the skeletal features of the gorgonian species. The amphipod gut contents were analysed, highlighting an unusual trophic source for caprellids and a new predator for gorgonians. This phenomenon is discussed also evidencing parallels between colonial marine invertebrates and their predators and terrestrial plant–herbivore interactions.
Style APA, Harvard, Vancouver, ISO itp.
10

Petrescu, Iorgu, i Ana–Maria Petrescu. "Invertebrate Collection Donated by Professor Dr. Ion Cantacuzino to “Grigore Antipa” National Museum of Natural History from Bucharest". Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 59, nr 1 (1.06.2016): 7–30. http://dx.doi.org/10.1515/travmu-2016-0013.

Pełny tekst źródła
Streszczenie:
AbstractThe catalogue of the invertebrate collection donated by Prof. Dr. Ion Cantacuzino represents the first detailed description of this historical act. The early years of Prof. Dr. Ion Cantacuzino’s career are dedicated to natural sciences, collecting and drawing of marine invertebrates followed by experimental studies. The present paper represents gathered data from Grigore Antipa 1931 inventory, also from the original handwritten labels. The specimens were classified by current nomenclature. The present donation comprises 70 species of Protozoa, Porifera, Coelenterata, Mollusca, Annelida, Bryozoa, Sipuncula, Arthropoda, Chaetognatha, Echinodermata, Tunicata and Chordata.. The specimens were collected from the North West of the Mediterranean Sea (Villefranche–sur–Mer) and in 1899 were donated to the Museum of Natural History from Bucharest. The original catalogue of the donation was lost and along other 27 specimens. This contribution represents an homage to Professor’s Dr. Cantacuzino generosity and withal restoring this donation to its proper position on cultural heritage hallway.
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Rozprawy doktorskie na temat "Marine invertebrates – North Sea"

1

Orav-Kotta, Helen. "Habitat choice and feeding activity of benthic suspension feeders and mesograzers in the northern Baltic Sea /". Tartu, Estonia : Tartu University Press, 2004. http://dspace.utlib.ee/dspace/bitstream/10062/489/5/Kotta.pdf.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

West, Fraser James Craig. "Interactions between marine benthic invertebrates and sediments in intertidal and deep sea environments". Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395057.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Brink, Laura Ann. "Cross-shelf transport of planktonic larvae of inner shelf benthic invertebrates". Thesis, Thesis (M.S.)--University of Oregon, 1996, 1997. http://hdl.handle.net/1794/10073.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Mair, Angus. "Investigation into a prominent 38 kHz scattering layer in the North Sea /". St Andrews, 2008. http://hdl.handle.net/10023/490.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Przeslawski, Rachel. "Sunburnt sea snails the role of ultravoilet radiation in the development of encapsulated embryos from temperate rocky shores /". Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060221.093951/index.html.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Allsop, Timothy. "Early compaction history of marine siliciclastic sediments". Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5675/.

Pełny tekst źródła
Streszczenie:
Differential compaction occurs within many sedimentary settings, such as alluvial and deltaic deposition, but it is within the submarine fan environment where the process is most effective due to the very high depositional porosities of the muds found there. Additionally the grain size of siliciclastic sediments within the submarine fan environment varies rapidly both horizontally and vertically, and hence the effect of differential compaction control on the depositional geometry and arrangement needs to be examined and modelled. It is also important to ascertain the rate at which sediments compact when buried, and whether compaction is complete at the end of deposition or whether it requires additional time to achieve this state. Sea- floor topography can be created if the latter case is true, and could influence subsequent deposition. Alternatively, if sea-floor topography is not created, the major control upon subsequent deposition may be the compatibility of the underlying section. Both controls will favour deposition of successive coarse clastic units above areas of fine-grained sediments, i.e. sand above shale rather than sand above sand. The Palaeocene sediments of the Central North Sea In the Montrose - Arbroath area (Blocks 22/17 and 22/18) combined with outcrop studies In southern California and New Mexico, have been used to assess the control of differential compaction on sediment distribution in a deep-sea fan setting. Differential compaction affects the Montrose - Arbroath area on a variety of scales. Firstly, differential compaction of the entire Palaeocene section across the underlying Forties - Montrose High induces structure. At a smaller scale, differential compaction may form a considerable control upon the spatial distribution of submarine fan channels and lobes that form the reservoir section throughout the area, and therefore the areal distribution of the oilfields themselves. Finally differential compaction may effect the distribution pattern of individual turbidites within such channel systems, thus forming a fine control upon the distribution of sands and shales within the reservoir. Fieldwork on submarine fan deposits in southern California has highlighted further complications to differential compaction that need to be addressed during the modelling process. Sedimentary processes such as basal loading and slumping are highly common in such deposits, and both can effect the compactional process to differing degrees. Results obtained from the modelling of stratal patterns observed in New Mexico provide information on the timing of differential compaction. It is suggested that compaction of sediments, even during early burial, requires a time interval often greater than the period of deposition, resulting in post-depositional compaction and the production of near-surface overpressure.
Style APA, Harvard, Vancouver, ISO itp.
7

Arnberg, Maj. "Combined effects of ocean acidification, ocean warming and oil spill on aspects of development of marine invertebrates". Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/5287.

Pełny tekst źródła
Streszczenie:
For decades, humans have impacted marine ecosystems in a variety of ways including contamination by pollution, fishing, and physical destruction of habitats. Global change has, and will, lead to alterations in in a number of abiotic factors of our ocean in particular reduced oxygen saturation, salinity changes, elevated temperature (ocean warming or OW) and elevated carbon dioxide (ocean acidification or OA). Now and in the future, OA and OW will operate together with local anthropogenic drivers such as oil pollution. And yet, at present, very little is known about their potential combined interactive effects on physiological performance and tolerance of marine organisms. Therefore, multiple driver experiments are required if we are to understand and predict future vulnerability of species, populations and ecosystems. Early life stages of invertebrates are generally considered most vulnerable to environmental stress. However, few studies consider the combined effects OA and OW on survival and growth during early development of marine invertebrates, and to our knowledge, there is no information on the additional effects of oil pollution. Therefore, the aim of this thesis was to investigate the effects of combined exposure to OA, OW, and incorporating local drivers such as oil pollution on the development, morphology and physiology of three economically and ecologically important marine invertebrates. These are Northern shrimp Pandalus borealis, Northern krill Meganyctiphanes norvegica, and the green sea urchin Strongylocentrotus droebachiensis. All are cold-water species, assumed to have a narrower tolerance than more temperate species, and so could be particular sensitive to combined stressor affects. Both Northern krill and to a lesser extent Northern shrimp larvae survived experimental conditions, mirroring those predicted under a future global change scenario (combined OA and OW exposure). Neither was hatching success affected. Both shrimp and krill larvae exhibited accelerated developmental rates and incurred greater maintenance costs as a result of exposure to these stressors. Shrimp larvae showed accelerated developmental rates (-9 days), increased metabolic rates (+20 %), and increased feeding rates (+20 %), but reduced growth (- 9 %) when exposed to OW compared with the control. OA increased development rate but only at the control temperature. Although juvenile mortality of krill was not affected by predicted OA/OW conditions, metabolic rate increased significantly (+ 36 %), as did larval developmental rate, while number of moults, feeding rate and growth (- 67 %) decreased significantly (- 67 %, - 60 % and -8 % respectively). Accelerated development was accompanied by greater maintenance costs possibly due to experience a mismatch between energy supply and demand. Both species had an excess of food, and so growth reduction was more likely to be associated with higher metabolic demands in the future global change treatments. Food shortage in situ, due to variable food availability in the sea and/or mismatch with key prey species (algae and zooplankton) could result in more negative effects on growth and ultimately survival. Green sea urchins were also able to survive OA exposure, without detectable effects on hatching success. However, at day 44 post-fertilization, larval body length in the OA treatment was 9 % lower compared to the control. Furthermore, there was a significant tendency of urchin larvae to increase swimming activity in the OA conditions that might indicate compensatory feeding. Elevated maintenance and repair costs as a result of exposure to multi-stressors affected the energy budget of all the three species studied here resulting in reduced growth. Global drivers (OA and OW) resulted in trade-offs with more energy reallocated to swimming activity and metabolism, rather than growth. Exposure to oil reduced the acquisition of energy by reduced feeding which in turn resulted in less energy being available for growth. Both shrimp and sea urchin larvae showed reduced activity and feeding when exposed to oil. It is possible that the reduced swimming activity observed may be due to a narcotic effect of the oil. Furthermore, early stage sea urchin larvae showed increased mortality when exposed to oil while the older larvae did not, indicating a stage specific toxicity to oil for sea urchin larvae. The combination of global drivers and oil pollution acted additively on growth for both sea urchin and shrimp larvae. The impact of combined drivers on the size of shrimp larvae was equal the sum of the negative impacts observed for each driver: a 5 % reduction when exposed to OA and OW, a 9 % reduction when exposed to oil, and a cumulative 15 % reduction when exposed to all stressors. Similarly, the impact of combined drivers on the size of sea urchin larvae was equal to the sum of the negative impacts observed for each driver: a 14 % reduction when exposed to OA, a 9 % reduction when exposed to oil, and a 21 % reduction when exposed to all drivers. Therefore, the study demonstrated the additive physiological effects of OA, OW and a contaminant, and indicated that larval (sea urchin and shrimp) resilience to future changes (i.e. pollution) could be greatly reduced if larvae were already energy limited and severely stressed (reduced development) as a result of exposure to the global drivers. This study therefore shows the importance that the effective management of local drivers such as oil pollution could have against the backdrop of OA and OW, and emphasises that it is important to study impacts of toxicants, such as an oil pollution, in the context of predicted changes in the environment, as OW and OA are becoming major concerns. Finally, the fact that some local and global drivers seem to act additively should encourage local managers to act on local driver regulations, to obtain positive effects on local populations and environment and thereby rendering them more resilient to the negative impacts of future global drivers.
Style APA, Harvard, Vancouver, ISO itp.
8

Ingram, Caroline S. "Ostracod palaeoecology and biogeochemistry of marine and estuarine interglacial deposits in North West Europe". Thesis, Bangor University, 1999. https://research.bangor.ac.uk/portal/en/theses/ostracod-palaeoecology-and-biogeochemistry-of-marine-and-estuarine-interglacial-deposits-in-north-west-europe(4cd7fd25-815b-4e1d-aebb-cada60a3d9b4).html.

Pełny tekst źródła
Streszczenie:
Ostracods were obtained from two cores in the southern North Sea area: the Sand Hole and Swarte Bank Formations of Tappin (1991) in BGS borehole 81/52A, cored from the Inner Silver Pit, southern North Sea, and a core from Shoeburyness in Essex, borehole S 1. The faunal assemblages in 131-181/52A were dominated by Sarsicytheridea punctillata, Elo/sonella concinna and Acanthocvthereis clunelmnensis. The assemblages recovered reflect a transition from glacio-marine conditions in the Swarte Bank Formation up into a cold-temperate marine environment in the Sand Hole Formation with deteriorating temperatures indicated at the top of the interval studied. In BHSI a freshwater to brackish transition occurred in the core, the freshwater section being dominated by Darwinula slevensoni and llyocypris spp., and the brackish section by Cyprideis torosa and C ytheromor pha fiiscata. The palaeoecology of the ostracod assemblages recovered is compared to other palaeoecological data from the same sections in each core and to ostracod data from other Hoxnian/l lolsteinian sites in north western Europe. These data are also discussed in the light of evidence indicating that there was a barrier across the southern North Sea when the sediments examined were deposited. Sarsicytheridea spp. and (yprideis terosa were used for trace element (Mg: Ca, Sr: Ca) and stable isotope (cS'"O, ö'3C) analyses. A calibration equation for the calculation of temperature from Mg: Ca ratio was successfully established from analysis of modern Sarsicytheridea. Modern Sr: Ca data could not be used to establish a calibration for salinity since there was too much scatter in the data. (' prideis torosa has been used for trace element and stable isotope work by other authors who have published relationships between ('yprideis and the water chemistry. Ostracods were also analysed down core to examine the changing ratios of Mg and Sr as a proxy for temperature and salinity changes in the I-loxnian of the southern North Sea. In BH81/52A, Mg: Ca data indicated a deterioration in temperature from 36.20 m to the top of the section studied of 9°C. Oxygen stable isotopic analyses from the same species, measured through the same core intervals, did not exhibit a trend, but their values were indicative of normal marine salinities. Carbon stable isotope analyses, performed at the same time as the oxygen analyses, indicate that there may have been high productivity in the region of deposition of the Sand Hole Formation, implying deposition in a region of freshwater influence. However, C/N analyses indicated that the sediments in the Inner Silver Pit were deposited under fully marine conditions. In III ISI, both the Mg: Ca and Sr: Ca data suggested that salinity had increased upcore. Ilowever, there was a lot of scatter in the data, indicating that the estuarine environment, under which the palaeoecology suggests the sediments were deposited, was a highly fluctuating one. These data compare favourably with previously published records. Published partition coefficients were used to compare the trace element data obtained to mean river and seawater values.
Style APA, Harvard, Vancouver, ISO itp.
9

Gypens, Nathalie. "Modélisation des efflorescences algales et des cycles du C, N, P et Si dans l'écosystème eutrophisé de la mer du Nord". Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210778.

Pełny tekst źródła
Streszczenie:
Le modèle biogéochimique de résolution complexe MIRO a été développé pour étudier la dynamique des efflorescences de Phaeocystis en zone côtière belge (BCZ) en réponse aux apports de nutriments anthropiques délivrés directement par l’Escaut et indirectement par la Seine via les eaux atlantiques entrantes. Le modèle MIRO décrit les cycles du carbone (C), de l’azote (N), du phosphore (P) et de la silice (Si) au travers de 38 compartiments chimiques, planctoniques et benthiques clés de l’écosystème côtier dominé par Phaeocystis. Il a été validé dans une configuration multi boite simple en utilisant des forçages climatologiques pour la période 1989-1999 et sur base d’une comparaison visuelle des simulations de nutriments et des variables planctoniques avec les données récoltées durant cette même période.

Le modèle validé a ensuite été utilisé pour étudier le fonctionnement de l’écosystème et les cycles biogéochimiques associés. Plus précisément, les bilans de carbone et de nutriments réalisés sur base des flux biologiques modélisés ont montré que l’écosystème de la BCZ, dominé par les efflorescences de Phaeocystis, se caractérise par une faible efficience trophique, une faible capacité de rétention/élimination des apports de nutriments d’origine anthropique et une faible capacité d’absorption du CO2 atmosphérique. Des scénarios annulant tour à tour l’activité biologique et les apports de carbone par les rivières ont permis de déterminer les rôles respectifs de la température, des processus biologiques et des apports de nutriments et de carbone par les rivières dans l’évolution saisonnière de la pCO2 des eaux de surface.

L’effet combiné des apports anthropiques de nutriments et des conditions météorologiques locales (débit, vent, température) a été étudié sur base d’une simulation effectuée pour la période contemporaine (1989-2003) en utilisant les forçages réels mesurés. La comparaison visuelle des simulations et des observations montre que, si le modèle est parfaitement capable de reproduire les successions phytoplanctoniques, il est par contre moins performant en ce qui concerne la reproduction des signaux extrêmes. Il apparaît donc que l’échelle de temps (mensuelle) utilisée pour décrire la variabilité des forçages est trop longue et ne permet pas de capter les variations hydrologiques à court terme résultant du vent et de la marée.

De manière à mieux comprendre le lien entre les activités humaines sur le bassin versant et l’eutrophisation des zones côtières, le modèle MIRO a été couplé aux sorties du modèle de rivière RIVERSTRAHLER appliqué à la Seine et à l’Escaut sur une période de 50 ans (1950-1998). Les résultats obtenus montrent que l’importance des efflorescences de diatomées est conditionnée par les apports de PO4, alors que l’importance des Phaeocystis est directement liée à l’importance des apports de NO3. Un bilan établi pour la BCZ montre que plus de 50% des apports annuels de N et 60% des apports annuels de P proviennent des eaux Atlantiques et pointe l‘importance des apports de la Seine pour l’enrichissement de la BCZ.

Différents scénarios de réduction des apports de nutriments provenant des rivières ont été réalisés afin de cibler le ou les nutriments à diminuer prioritairement pour réduire les efflorescences de Phaeocystis. Les résultats montrent que, dans les conditions actuelles, seule une réduction des apports de NO3 prédit une diminution des efflorescences de Phaeocystis. De plus, pour avoir un abattement significatif de ces efflorescences, il est nécessaire d’agir de manière conjointe sur les apports de la Seine et de l’Escaut.

En vue de l’implémentation du code MIRO dans un modèle 3D hydrodynamique et pour tenir compte de la variabilité spatiale des sédiments dans la zone étudiée, une paramétrisation des flux de nutriments à l’interface eau-sédiment a été recherchée sur base des résultats obtenus avec un modèle diagénétique analytique décrivant la dégradation de la matière organique et les cycles de l’azote et du phosphore dans les sédiments.


Doctorat en sciences, Spécialisation biologie animale
info:eu-repo/semantics/nonPublished

Style APA, Harvard, Vancouver, ISO itp.
10

Schneider, von Deimling Jens [Verfasser]. "Hydroacoustic and geochemical traces of marine gas seepage in the North Sea / Jens Schneider von Deimling". Kiel : Universitätsbibliothek Kiel, 2010. http://d-nb.info/1019951257/34.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Książki na temat "Marine invertebrates – North Sea"

1

Gustafson, Sarah. Sea stars, sponges and other spineless sea creatures. New York: Scholastic, 2005.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Interesting invertebrates. London: Raintree, 2011.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Atiya, Farid S. The Red Sea in Egypt. 6th of October City, Giza, Egypt: F.S. Atiya, 1991.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Ghebremichael, Amanuel. Commercial fish of the Eritrean Red Sea. Clacton on Sea, Essex, England: Apex, 2006.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Vine, Peter. The red sea. London: Immel, 1985.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Inc, World Book, red. Mollusks and similar sea creatures. Chicago: World Book, 2009.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Hawai'i's sea creatures: A guide to Hawai'i's marine invertebrates. [Honolulu, Hawaii]: Mutual Pub., 1998.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Marsh, Loisette M. Sea stingers--and other venomous and poisonous marine invertebrates of Western Australia. Perth, W.A: Western Australian Museum, 1986.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Kerstitch, Alex N. Sea of Cortez marine invertebrates: A guide for the Pacific Coast, Mexico to Ecuador. Monterey, Calif: Sea Challengers, 1989.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Kerstitch, Alex N. Sea of Cortez marine invertebrates: A guide for the Pacific coast, México to Perú. Wyd. 2. Monterey, Calif: Sea Challengers, 2007.

Znajdź pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
Więcej źródeł

Części książek na temat "Marine invertebrates – North Sea"

1

Cooper, V. A. "Effects on Invertebrates". W Pollution of the North Sea, 604–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-73709-1_35.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Templado, José, Ángel A. Luque, Diego Moreno, José Manuel Tierno de Figueroa, Luis Sánchez Tocino, Ricardo Aguilar i Ana de la Torriente. "Invertebrates: The Realm of Diversity". W Alboran Sea - Ecosystems and Marine Resources, 359–430. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65516-7_10.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Brander, Keith M., Geir Ottersen, Jan P. Bakker, Gregory Beaugrand, Helena Herr, Stefan Garthe, Anita Gilles i in. "Environmental Impacts—Marine Ecosystems". W North Sea Region Climate Change Assessment, 241–74. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39745-0_8.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Owens, Roderick. "Holocene Sedimentation in the North-Western North Sea". W Holocene Marine Sedimentation in the North Sea Basin, 303–22. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444303759.ch23.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Zerbe, Stefan. "Marine Habitats in the North Sea and Baltic Sea". W Restoration of Ecosystems – Bridging Nature and Humans, 295–313. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65658-7_13.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Reijnders, P. J. H. "Accumulation and Body Distribution of Xenobiotics in Marine Mammals". W Pollution of the North Sea, 596–603. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-73709-1_34.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Kersten, M. "Geobiological Effects on the Mobility of Contaminants in Marine Sediments". W Pollution of the North Sea, 36–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-73709-1_3.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

Jago, C. F. "Sediment Response to Waves and Currents, North Yorkshire Shelf, North Sea". W Holocene Marine Sedimentation in the North Sea Basin, 283–301. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444303759.ch22.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Reise, Karsten, Stephan Gollasch i Wim J. Wolff. "Introduced Marine Species of the North Sea Coasts". W Invasive Aquatic Species of Europe. Distribution, Impacts and Management, 260–66. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9956-6_28.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

D'Olier, B. "Sedimentary Events during Flandrian Sea-Level Rise in the South-West Corner of the North Sea". W Holocene Marine Sedimentation in the North Sea Basin, 221–27. Oxford, UK: Blackwell Publishing Ltd., 2009. http://dx.doi.org/10.1002/9781444303759.ch16.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.

Streszczenia konferencji na temat "Marine invertebrates – North Sea"

1

Targusi, Monica, Veronica Marusso, Salvatore Porrello, Fabio Bertasi, Tiziano Bacci, Loretta Lattanzi, Danilo Vani, Barbara Laporta i Paolo Tomassetti. "Italian macroinvertebrates interlaboratory comparisons on taxonomical identification and counting of marine soft bottom invertebrates". W 2023 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2023. http://dx.doi.org/10.1109/metrosea58055.2023.10317396.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
2

Jones, Alan R. "Safe Marine Access to Platforms in the Southern North Sea". W International Petroleum Technology Conference. International Petroleum Technology Conference, 2007. http://dx.doi.org/10.2523/iptc-11303-ms.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
3

Jones, A. R. "Safe Marine Access to Platforms in the Southern North Sea". W IPTC 2007: International Petroleum Technology Conference. European Association of Geoscientists & Engineers, 2007. http://dx.doi.org/10.3997/2214-4609-pdb.147.iptc11303.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
4

Park, J., A. K. Bjørke, G. Sauvin, J. P. Morten i B. Nazarian. "Marine CSEM for CO2 Storage Monitoring - North Sea Sensitivity Study". W 81st EAGE Conference and Exhibition 2019. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201901160.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Jones, Alan R. "Safe Marine Access to Platforms in the Southern North Sea". W International Petroleum Technology Conference. International Petroleum Technology Conference, 2007. http://dx.doi.org/10.2523/11303-ms.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Kimber, R. N., R. Cooper, M. C. R. Thomas, L. J. Burns, S. D. Harker i P. Cornick. "Nuggets Area Deep Marine Turbiditic Fan Complex, Northern North Sea". W 63rd EAGE Conference & Exhibition. European Association of Geoscientists & Engineers, 2001. http://dx.doi.org/10.3997/2214-4609-pdb.15.l-03.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Buckley, F. A. "Re-evaluating Shallow Geology in the Central North Sea". W Near Surface Geoscience 2014 - First Applied Shallow Marine Geophysics Conference. Netherlands: EAGE Publications BV, 2014. http://dx.doi.org/10.3997/2214-4609.20142112.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
8

"Mix Designs and Strength Data for Concrete Platforms in the North Sea". W SP-109: Concrete in Marine Environment. American Concrete Institute, 1988. http://dx.doi.org/10.14359/2037.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
9

Thompson, Natalie, i Beth E. Caissie. "RECONSTRUCTING CHANGES IN SEA ICE COVER DURING MARINE ISOTOPE STAGE 11 FROM BERING SEA SEDIMENT CORES". W 52nd Annual North-Central GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018nc-313273.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
10

Park, J., H. Marín Moreno, G. Sauvin, E. Skultveit i L. Grande. "Potentials of marine CSEM for CO2 storage in the North Sea". W 2nd Geoscience & Engineering in Energy Transition Conference. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.202121047.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.

Raporty organizacyjne na temat "Marine invertebrates – North Sea"

1

Jalkanen, Jukka-Pekka, Erik Fridell, Jaakko Kukkonen, Jana Moldanova, Leonidas Ntziachristos, Achilleas Grigoriadis, Maria Moustaka i in. Environmental impacts of exhaust gas cleaning systems in the Baltic Sea, North Sea, and the Mediterranean Sea area. Finnish Meteorological Institute, 2024. http://dx.doi.org/10.35614/isbn.9789523361898.

Pełny tekst źródła
Streszczenie:
Description: Shipping is responsible for a range of different pressures affecting air quality, climate, and the marine environment. Most social and economic analyses of shipping have focused on air pollution assessment and how shipping may impact climate change and human health. This risks that policies may be biased towards air pollution and climate change, whilst impacts on the marine environment are not as well known. One example is the sulfur regulation introduced in January 2020, which requires shipowners to use a compliant fuel with a sulfur content of 0.5% (0.1% in SECA regions) or use alternative compliance options (Exhaust Gas Cleaning Systems, EGCS) that are effective in reducing sulfur oxide (SOx) emissions to the atmosphere. The EGCS cleaning process results in large volumes of discharged water that includes a wide range of contaminants. Although regulations target SOx removal, other pollutants such as polycyclic aromatic hydrocarbons (PAHs), metals and combustion particles are removed from the exhaust to the wash water and subsequently discharged to the marine environment. Based on dilution series of the Whole Effluent Testing (WET), the impact of the EGCS effluent on marine invertebrate species and on phytoplankton was found to vary between taxonomic groups, and between different stages of the invertebrate life cycle. Invertebrates were more affected than phytoplankton, and the most sensitive endpoint detected in the present project was the fertilisation of sea urchin eggs, which were negatively affected at a sample dilution of 1 : 1,000,000. Dilutions of 1: 100,000 were harmful to early development of several of the tested species, including mussels, polychaetes, and crustaceans. The observed effects at these low concentrations of EGCS effluent were reduced egg production, and deformations and abnormal development of the larvae of the species. The ecotoxicological data produced in the EMERGE project were used to derive Predicted No Effect Concentration values. Corresponding modelling studies revealed that the EGCS effluent can be considered as a single entity for 2-10 days from the time of discharge, depending on the environmental conditions like sea currents, winds, and temperature. Area 10-30 km outside the shipping lanes will be prone to contaminant concentrations corresponding to 1 : 1,000,000 dilution which was deemed harmful for most sensitive endpoints of WET experiments. Studies for the Saronikos Gulf (Aegean Sea) revealed that the EGCS effluent dilution rate exceeded the 1 : 1,000,000 ratio 70% of the time at a distance of about 10 km from the port. This was also observed for 15% of the time within a band of 10 km wide along the shipping lane extending 500 km away from the port of Piraeus. When mortality of adult specimens of one of the species (copepod Acartia tonsa) was used as an endpoint it was found to be 3-4 orders of magnitude less sensitive to EGCS effluent than early life stage endpoints like fertilisation of eggs and larval development. Mortality of Acartia tonsa is commonly used in standard protocols for ecotoxicological studies, but our data hence shows that it seriously underestimates the ecologically relevant toxicity of the effluent. The same is true for two other commonly used and recommended endpoints, phytoplankton growth and inhibition of bioluminescence in marine bacteria. Significant toxic effects were reached only after addition of 20-40% effluent. A marine environmental risk assessment was performed for the Öresund region for baseline year 2018, where Predicted Environmental Concentrations (PECs) of open loop effluent discharge water were compared to the PNEC value. The results showed modelled concentrations of open loop effluent in large areas to be two to three orders of magnitude higher than the derived PNEC value, yielding a Risk Characterisation Ratio of 500-5000, which indicates significant environmental risk. Further, it should be noted that between 2018-2022 the number of EGCS vessels more than quadrupled in the area from 178 to 781. In this work, the EGCS discharges of the fleet in the Baltic Sea, North Sea, the English Channel, and the Mediterranean Sea area were studied in detail. The assessments of impacts described in this document were performed using a baseline year 2018 and future scenarios. These were made for the year 2050, based on different projections of transport volumes, also considering the fuel efficiency requirements and ship size developments. From the eight scenarios developed, two extremes were chosen for impact studies which illustrate the differences between a very high EGCS usage and a future without the need for EGCS while still compliant to IMO initial GHG strategy. The scenario without EGCS leads to 50% reduction of GHG emissions using low sulfur fuels, LNG, and methanol. For the high EGCS adoption scenario in 2050, about a third of the fleet sailing the studied sea areas would use EGCS and effluent discharge volumes would be increased tenfold for the Baltic Sea and hundredfold for the Mediterranean Sea when compared to 2018 baseline discharges. Some of the tested species, mainly the copepods, have a central position in pelagic food webs as they feed on phytoplankton and are themselves the main staple food for most fish larvae and for some species of adult fish, e.g., herring. The direct effect of the EGSE on invertebrates will therefore have an important indirect effect on the fish feeding on them. Effects are greatest in and near shipping lanes. Many important shipping lanes run close to shore and archipelago areas, and this also puts the sensitive shallow water coastal ecosystems at risk. It should be noted that no studies on sub-lethal effects of early 19 life stages in fish were included in the EMERGE project, nor are there any available data on this in the scientific literature. The direct toxic effects on fish at the expected concentrations of EGCS effluent are therefore largely unknown. According to the regional modelling studies, some of the contaminants will end up in sediments along the coastlines and archipelagos. The documentation of the complex chemical composition of EGCS effluent is in sharp contrast to the present legislation on threshold levels for content in EGCS effluent discharged from ships, which includes but a few PAHs, pH, and turbidity. Traditional assessments of PAHs in environmental and marine samples focus only on the U.S. Environmental Protection Agency (EPA) list of 16 priority PAHs, which includes only parent PAHs. Considering the complex PAHs assemblages and the importance of other related compounds, it is important to extend the EPA list to include alkyl-PAHs to obtain a representative monitoring of EGCS effluent and to assess the impact of its discharges into the marine environment. An economic evaluation of the installation and operational costs of EGCS was conducted noting the historical fuel price differences of high and low sulfur fuels. Equipment types, installation dates and annual fuel consumption from global simulations indicated that 51% of the global EGCS fleet had already reached break-even by the end of 2022, resulting in a summarised profit of 4.7 billion €2019. Within five years after the initial installation, more than 95% of the ships with open loop EGCS reach break-even. The pollutant loads from shipping come both through atmospheric deposition and direct discharges. This underlines the need of minimising the release of contaminants by using fuels which reduce the air emissions of harmful components without creating new pollution loads through discharges. Continued use of EGCS and high sulfur fossil fuels will delay the transition to more sustainable options. The investments made on EGCS enable ships to continue using fossil fuels instead of transitioning away from them as soon as possible as agreed in the 2023 Dubai Climate Change conference. Continued carriage of residual fuels also increases the risk of dire environmental consequences whenever accidental releases of oil to the sea occur.
Style APA, Harvard, Vancouver, ISO itp.
2

Lenz, Mark. RV POSEIDON Fahrtbericht / Cruise Report POS536/Leg 1. GEOMAR, październik 2020. http://dx.doi.org/10.3289/geomar_rep_ns_56_2020.

Pełny tekst źródła
Streszczenie:
DIPLANOAGAP: Distribution of Plastics in the North Atlantic Garbage Patch Ponta Delgada (Portugal) – Malaga (Spain) 17.08. – 12.09.2019 The expedition POS 536 is part of a multi-disciplinary research initiative of GEOMAR investigating the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus will be on the vertical transfer of plastic debris from the surface and near-surface waters to the deep sea and on the processes that mediate this transport. The obtained data will help to develop quantitative models that provide information about the level of plastic pollution in the different compartments of the open ocean (surface, water column, seafloor). Furthermore, the effects of plastic debris on marine organisms in the open ocean will be assessed. The cruise will provide data about the: (1) abundance of plastic debris with a minimum size of 100 μm as well as the composition of polymer types in the water column at different depths from the sea surface to the seafloor including the sediment, (2) abundance and composition of plastic debris in organic aggregates (“marine snow”), (3) in pelagic and benthic organisms (invertebrates and fish) and in fecal pellets, (4) abundance and the identity of biofoulers (bacteria, protozoans and metazoans) on the surface of plastic debris from different water depths, (5) identification of chemical compounds (“additives”) in the plastic debris and in water samples.
Style APA, Harvard, Vancouver, ISO itp.
3

Ammann, Karah, Eric Dinger i David Lohse. Rocky intertidal monitoring: 2019?2020 results from Redwood National and State Parks. National Park Service, 2023. http://dx.doi.org/10.36967/2301673.

Pełny tekst źródła
Streszczenie:
This report presents the results of the monitoring surveys done in 2019 and 2020 of the rocky intertidal community at three sites within the Redwood National and State Parks (RNSP) in Del Norte County, California. These sites are part of MARINe (Multi-Agency Rocky Intertidal Network), a regional intertidal monitoring network sponsored by the Bureau of Ocean Energy Management (BOEM), with additional funding and support from local and state governments, universities, and private organizations (see www.marine.ucsc.edu). Funding for annual monitoring in RNSP is provided by the National Park Service (NPS) Klamath Network (KLMN) through a cooperative agreement with the University of California at Santa Cruz (UCSC). Field sampling is accomplished through a collaborative effort between UCSC and RNSP staff. The 2019 and 2020 field crews each consisted of 4 UCSC biologists and three RNSP staff members. This monitoring program, adapted from MARINe protocols, was designed to identify and follow temporal trends in populations of the common and/or ecologically important organisms in the rocky intertidal community at three index sites within the RNSP. To accomplish this, sites are sampled once a year, and data are collected from permanent plots established to monitor changes in sessile invertebrates, algae, and the ochre sea star (Pisaster ochraceus), and from permanent transects to monitor surfgrass (Phyllospadix spp.) and sea palm (Postelsia palmaeformis). These data are utilized to determine annual status of the community and archived for future use to explore broader spatial and temporal trends. All of the monitored populations varied to some degree over the course of 2019?2020. The KLMN rocky intertidal monitoring program (?RNSP rocky intertidal monitoring program? in previous reports; Amman et al. 2022), which started in RNSP in 2004, continues to progress successfully. The procedures for data collection, data management, data analysis, and reporting are regularly assessed and have undergone some revisions based on the evolution of the monitoring program (Ammann and Raimondi 2008; protocol revision in progress [Eric Dinger, National Park Service ecologist, pers. comm., Jan 23, 2023]). As such, this year?s report follows on Amman et al. (2022) which introduced new reporting. Amman et al. (2022) and this report include broader scale biodiversity data collected through Coastal Biodiversity Survey protocol. These biodiversity data are sampled at 2 of the 3 sites every sampling period. This report differs from earlier annual reports in shifting from a full summary report, with in-depth analysis, to an administrative data summary report that does not contain in-depth analyses. Subsequent reports will follow this format. This report also reports on optional MARINe protocol data we collected that are not part of the KLMN rocky intertidal protocol (e.g., mussel sizes and sea palm measurements). Some of these optional data measurements may be discontinued in future years. More comprehensive trend analyses of the data are available in the program?s 5-year trend reports, the first of which included data through 2013 (Ammann et al. 2017) and the consecutive trend paper through 2018 (Lohse et al. in press).
Style APA, Harvard, Vancouver, ISO itp.
4

Geelhoed, Steve C. V., Nicole Janinhoff, Sander Lagerveld, Linn S. Lehnert i Hans Verdaat. Marine mammal surveys in Dutch North Sea waters in 2017. Den Helder: Wageningen Marine Research, 2018. http://dx.doi.org/10.18174/448322.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
5

Geelhoed, Steve C. V., Nicole Janinhoff, Samder Lagerveld i Hans Verdaat. Marine mammal surveys in Dutch North Sea waters in 2018. Den Helder: Wageningen Marine Research, 2018. http://dx.doi.org/10.18174/466280.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
6

Geelhoed, Steve C. V., Nicole Janinhoff, Sander Lagerveld i Hans Verdaat. Marine mammal surveys in Dutch North Sea waters in 2019. Den Helder: Wageningen Marine Research, 2020. http://dx.doi.org/10.18174/515228.

Pełny tekst źródła
Style APA, Harvard, Vancouver, ISO itp.
7

Chriscoe, Mackenzie, Rowan Lockwood, Justin Tweet i Vincent Santucci. Colonial National Historical Park: Paleontological resource inventory (public version). National Park Service, luty 2022. http://dx.doi.org/10.36967/nrr-2291851.

Pełny tekst źródła
Streszczenie:
Colonial National Historical Park (COLO) in eastern Virginia was established for its historical significance, but significant paleontological resources are also found within its boundaries. The bluffs around Yorktown are composed of sedimentary rocks and deposits of the Yorktown Formation, a marine unit deposited approximately 4.9 to 2.8 million years ago. When the Yorktown Formation was being deposited, the shallow seas were populated by many species of invertebrates, vertebrates, and micro-organisms which have left body fossils and trace fossils behind. Corals, bryozoans, bivalves, gastropods, scaphopods, worms, crabs, ostracodes, echinoids, sharks, bony fishes, whales, and others were abundant. People have long known about the fossils of the Yorktown area. Beginning in the British colonial era, fossiliferous deposits were used to make lime and construct roads, while more consolidated intervals furnished building stone. Large shells were used as plates and dippers. Collection of specimens for study began in the late 17th century, before they were even recognized as fossils. The oldest image of a fossil from North America is of a typical Yorktown Formation shell now known as Chesapecten jeffersonius, probably collected from the Yorktown area and very likely from within what is now COLO. Fossil shells were observed by participants of the 1781 siege of Yorktown, and the landmark known as “Cornwallis Cave” is carved into rock made of shell fragments. Scientific description of Yorktown Formation fossils began in the early 19th century. At least 25 fossil species have been named from specimens known to have been discovered within COLO boundaries, and at least another 96 have been named from specimens potentially discovered within COLO, but with insufficient locality information to be certain. At least a dozen external repositories and probably many more have fossils collected from lands now within COLO, but again limited locality information makes it difficult to be sure. This paleontological resource inventory is the first of its kind for Colonial National Historical Park (COLO). Although COLO fossils have been studied as part of the Northeast Coastal Barrier Network (NCBN; Tweet et al. 2014) and, to a lesser extent, as part of a thematic inventory of caves (Santucci et al. 2001), the park had not received a comprehensive paleontological inventory before this report. This inventory allows for a deeper understanding of the park’s paleontological resources and compiles information from historical papers as well as recently completed field work. In summer 2020, researchers went into the field and collected eight bulk samples from three different localities within COLO. These samples will be added to COLO’s museum collections, making their overall collection more robust. In the future, these samples may be used for educational purposes, both for the general public and for employees of the park.
Style APA, Harvard, Vancouver, ISO itp.
8

Shaw, J., i D. G. Lintern. Marine geology, geomorphology of Chatham Sound, British Columbia, parts of NTS 103-G, H, I, and J. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/329405.

Pełny tekst źródła
Streszczenie:
This map depicts the geomorphology of the Chatham Sound area, British Columbia, and is based on bathymetry and backscatter data from multibeam sonar surveys, complemented by 3.5 kHz subbottom profiler data, grab samples, cores, and bottom photographs. The map encompasses three physiographic areas: 1) the easternmost portion of Dogfish Banks; 2) the north-south oriented Hecate trough; and 3) the maze of channels and inlets east of Hecate trough. The morphological and textural complexity reflects the underlying bedrock, glacial history, a complex pattern of postglacial relative sea-level change, and modern oceanographic processes. Hexactinellid sponge reefs are a significant component of the seafloor mosaic. The criteria for reef identification were positive relief, low backscatter strength, and acoustic transparency.
Style APA, Harvard, Vancouver, ISO itp.
9

Kerr, D. E. Reconnaissance surficial geology, Mara River, Nunavut, 76-K. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329667.

Pełny tekst źródła
Streszczenie:
The Mara River map area consists of extensive glacially and meltwater scoured bedrock, deposits of hummocky till, fluted till blanket, and till veneer throughout the map area, glaciofluvial sediments within major river valleys, and postglacial marine sediments in coastal lowlands. The boundaries of many till deposits were eroded to bedrock by proglacial and subglacial meltwater, and locally northwest-trending corridors are defined by eskers. Glacially dammed lakes, associated with deltas between 450 m and 230 m elevation, occupied some river valleys where retreating or stagnant ice impeded drainage to the east and north. Striations and streamlined landforms indicate a north-northwestward regional ice flow in the eastern and northern regions, diverging to a west-southwestward flow in the western regions. A series of glaciomarine and marine deltas, and fine-grained sediments record the marine incursion up to 200 m elevation. Isostatic rebound caused marine regression, forming deltas between 200 m and 60 m, and raised beaches from 150 m elevation to current sea level.
Style APA, Harvard, Vancouver, ISO itp.
10

Slater, Anne-Michelle. Passport to the oceans of the future: delivering marine energy with science linked to policy. Marine Alliance for Science and Technology for Scotland (MASTS), lipiec 2021. http://dx.doi.org/10.15664/10023.23980.

Pełny tekst źródła
Streszczenie:
In February 2021, a group from MASTS, Environmental Interactions of Marine Renewables (EIMR) and Marine Scotland began exploring options for a joint event on marine energy science and policy development. The original concept was to bridge the gap between events that each group would normally arrange ‘in person’ and the virtual world in which we were all currently existing. Encouraged by the online support and experience available from MASTS, a steering group decided to arrange a workshop. In order to straddle our interests, the starting point was the capacity of the North Sea to deliver renewable energy. We wanted to include emerging science and the timing of the review of Scotland’s National Marine Plan provided an excellent context. We sought to deliver a wide range of content but encourage participant conversation. We aimed for a range of speakers delivering 7-minute recorded talks. Talks included findings from funded research, ongoing projects, and some emerging thinking across the science policy interface for marine planning. Marine energy was interpreted in the widest of senses, but the main focus was on offshore wind in UK waters, with particular detail about Scotland.
Style APA, Harvard, Vancouver, ISO itp.
Możesz być także zainteresowany rozszerzonymi bibliografiami na temat „Marine invertebrates – North Sea” dla poszczególnych typów źródeł:
Artykuły w czasopismach Rozprawy doktorskie Książki
Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!

Do bibliografii