Relevant bibliographies by topics / Ecosystem engineer

Academic literature on the topic 'Ecosystem engineer'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Ecosystem engineer"

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Gable, Thomas D., Sean M. Johnson-Bice, Austin T. Homkes, Steve K. Windels, and Joseph K. Bump. "Outsized effect of predation: Wolves alter wetland creation and recolonization by killing ecosystem engineers." Science Advances 6, no. 46 (November 2020): eabc5439. http://dx.doi.org/10.1126/sciadv.abc5439.

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Gray wolves are a premier example of how predators can transform ecosystems through trophic cascades. However, whether wolves change ecosystems as drastically as previously suggested has been increasingly questioned. We demonstrate how wolves alter wetland creation and recolonization by killing dispersing beavers. Beavers are ecosystem engineers that generate most wetland creation throughout boreal ecosystems. By studying beaver pond creation and recolonization patterns coupled with wolf predation on beavers, we determined that 84% of newly created and recolonized beaver ponds remained occupied until the fall, whereas 0% of newly created and recolonized ponds remained active after a wolf killed the dispersing beaver that colonized that pond. By affecting where and when beavers engineer ecosystems, wolves alter all of the ecological processes (e.g., water storage, nutrient cycling, and forest succession) that occur due to beaver-created impoundments. Our study demonstrates how predators have an outsized effect on ecosystems when they kill ecosystem engineers.
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Cintra, Allsay Kitsash Addifisyukha. "MENGENAL PEREKAYASA EKOSISTEM." OSEANA 44, no. 2 (December 27, 2019): 49–53. http://dx.doi.org/10.14203/oseana.2019.vol.44no.2.49.

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UNDERSTANDING THE ECOSYSTEM ENGINEERS. Ecosystem engineers are organisms that can create, destroy or even maintain the sustainability of a particular habitat. The process of ecosystem engineering begins with structural changes in the environment and subsequently change the abiotic the biotic term or the existence of other organisms. Ecosystem engineers are divided into two, namely autogenic and allogenic engineers. Autogenic engineers change the habitat condition by shifting their body conditions, whereas allogenic engineers that can directly change habitat conditions. The impact of ecosystem engineers on the environment is determined by the magnitude and duration of structural changes made or abandoned by the ecosystem engineer. Understanding the concept of ecosystem engineering is useful as one of the efforts to restore habitat and conservation acts.
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Ayanu, Yohannes, Anke Jentsch, Detlef Müller-Mahn, Simone Rettberg, Clemens Romankiewicz, and Thomas Koellner. "Ecosystem engineer unleashed: Prosopis juliflora threatening ecosystem services?" Regional Environmental Change 15, no. 1 (May 21, 2014): 155–67. http://dx.doi.org/10.1007/s10113-014-0616-x.

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Stawski, Clare. "The little feathered ecosystem engineer." Journal of Experimental Biology 220, no. 11 (May 31, 2017): 1934.1–1934. http://dx.doi.org/10.1242/jeb.147397.

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Wheelwright, Nathaniel T. "Eradication of an ecosystem engineer." Frontiers in Ecology and the Environment 14, no. 1 (February 2016): 53–54. http://dx.doi.org/10.1002/fee.1221.

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Mott, Cy L., Craig K. Bloomquist, and Clayton K. Nielsen. "Within-lodge interactions between two ecosystem engineers, beavers (Castor canadensis) and muskrats (Ondatra zibethicus)." Behaviour 150, no. 11 (2013): 1325–44. http://dx.doi.org/10.1163/1568539x-00003097.

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Ecosystem engineers are frequently observed to increase local biodiversity through their effects on resource flows. While promotion of successional processes and increased biodiversity may occur without direct interaction between ecosystem engineers and sympatric species, many cases exist where interactions are common. Under such conditions, it is unclear whether direct interactions serve to facilitate or inhibit coexistence of ecosystem engineers and the species attempting to use engineered habitats. We used remote videography within lodges of an ecosystem engineer, beavers (Castor canadensis), to quantify the taxonomic diversity of lodge use by non-beaver fauna and to characterize interactions between beavers and a second engineering species that commonly uses beaver-manipulated habitats, muskrats (Ondatra zibethicus). Beaver lodges were used by eleven types of vertebrates and invertebrates. Although no increased aggression was displayed by resident beavers towards intruding muskrats, the temporally partitioned patterns of muskrats’ and beavers’ entrances and exits to and from lodges, respectively, and altered behavior among both species during cohabitation, indicates that lodge use by muskrats represents an exploitative behavior as opposed to a mutualistic or even commensalistic relationship. We hypothesize that the ecological similarities between these species promotes competitive interactions, and the observed relationship highlights the tradeoffs faced by ecosystem engineers wherein constructed objects intended to exclude competitors are simultaneously associated with habitat modifications that promote the persistence of those same competitors.
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Fontanari, José. "The Collapse of Ecosystem Engineer Populations." Mathematics 6, no. 1 (January 12, 2018): 9. http://dx.doi.org/10.3390/math6010009.

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Bruschetti, Martín. "Role of Reef-Building, Ecosystem Engineering Polychaetes in Shallow Water Ecosystems." Diversity 11, no. 9 (September 17, 2019): 168. http://dx.doi.org/10.3390/d11090168.

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Although the effect of ecosystem engineers in structuring communities is common in several systems, it is seldom as evident as in shallow marine soft-bottoms. These systems lack abiotic three-dimensional structures but host biogenic structures that play critical roles in controlling abiotic conditions and resources. Here I review how reef-building polychaetes (RBP) engineer their environment and affect habitat quality, thus regulating community structure, ecosystem functioning, and the provision of ecosystem services in shallow waters. The analysis focuses on different engineering mechanisms, such as hard substrate production, effects on hydrodynamics, and sediment transport, and impacts mediated by filter feeding and biodeposition. Finally, I deal with landscape-level topographic alteration by RBP. In conclusion, RBP have positive impacts on diversity and abundance of many species mediated by the structure of the reef. Additionally, by feeding on phytoplankton and decreasing water turbidity, RBP can control primary production, increase light penetration, and might alleviate the effects of eutrophication affecting supporting ecosystem services, such as nutrient cycling. They can also modulate cultural ecosystem services by affecting recreational activities (e.g., negative impacts on boating and angling, increased value of sites as birdwatching sites). Acknowledging the multiplicity of synergistic and antagonistic effects of RBP on ecosystems and linking changes in habitat structure, filter-feeding activities, and biodeposition to ecosystem services are essential for effective decision-making regarding their management and restoration.
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Lundgren, Erick J., Daniel Ramp, Juliet C. Stromberg, Jianguo Wu, Nathan C. Nieto, Martin Sluk, Karla T. Moeller, and Arian D. Wallach. "Equids engineer desert water availability." Science 372, no. 6541 (April 29, 2021): 491–95. http://dx.doi.org/10.1126/science.abd6775.

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Megafauna play important roles in the biosphere, yet little is known about how they shape dryland ecosystems. We report on an overlooked form of ecosystem engineering by donkeys and horses. In the deserts of North America, digging of ≤2-meter wells to groundwater by feral equids increased the density of water features, reduced distances between waters, and, at times, provided the only water present. Vertebrate richness and activity were higher at equid wells than at adjacent dry sites, and, by mimicking flood disturbance, equid wells became nurseries for riparian trees. Our results suggest that equids, even those that are introduced or feral, are able to buffer water availability, which may increase resilience to ongoing human-caused aridification.
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Scheel, David, Peter Godfrey-Smith, and Matthew Lawrence. "Octopus tetricus (Mollusca: Cephalopoda) as an ecosystem engineer." Scientia Marina 78, no. 4 (October 16, 2014): 521–28. http://dx.doi.org/10.3989/scimar.04073.15a.

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Dissertations / Theses on the topic "Ecosystem engineer"

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Wodika, Ben. "EFFECTS OF TIME, SEED SOURCE, AND PLANT COMPOSITION ON MACROINVERTEBRATES IN RESTORED PRAIRIE." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1088.

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Invertebrates influence primary productivity and nutrient cycling in ecosystems. They are also important links between producer and higher trophic levels. Despite their important role in terrestrial ecosystem function, invertebrates are frequently overlooked in ecological restorations. Thus, the objective of this research was to quantify how belowground macroinvertebrate ecosystem engineers and communities change over time following ecological restoration and examine whether the source of dominant plant species and the composition of non-dominant plant species influence aboveground macroinvertebrates community structure in restored prairie. A chronosequence design (space for time substitution) was used to determine the role of restoration age, plant community, and soil structure on the recovery of two belowground macroinvertebrate ecosystem engineers (Chapter 2). Ants and earthworms were sampled from cultivated fields, grasslands restored for 1-21 years, and native prairie. Earthworm abundance increased with time since cessation of cultivation, concomitant with prairie establishment. The abundance and biomass of ants were more related to the structure of restored plant communities than time since restoration. The dominance of exotic earthworms, and a generalist ant species in these restorations, coupled with their known capacity to alter soil properties and processes, may represent novel conditions for grassland development. The same chronosequence of agricultural fields, restored prairies, and prairies that were never cultivated was used to address the second objective of this research, which was to quantify how the belowground macroinvertebrate community composition changed in response to ecological restoration and whether the communities became representative of undisturbed (“target”) communities. Macroinvertebrate communities in the two remnant prairie sampled were distinct from restorations and continuouslycultivated fields. The macroinvertebrate communities in prairie that had never been cultivated were also distince from each other, indicating a “target” community is hard to define. Belowground macroinvertebrates changed in a trajectory that was not representative of either remnant prairie, but was representative of the an average of both remnant prairies. Thus, if you reconstruct prairie from cultivated soil conditions (“build it”), macroinvertebrates will colonize (“come”), but attaining a community representative of a specific target may require introduction from that target. Colonization of macroinvertebrates in restorations aboveground are most likely to be influenced by aspects of the plant community. A third objective of this research was to quantify whether variation in dominant species (cultivars vs. local ecotypes) and composition of subordinate species (local species pools) influence the composition of aboveground macroinvertebrates. Macronvertebrate abundance, richness, diversity, trophic groups and community composition in late summer did not vary between prairie restored with cultivar and local ecotypes of the dominant grasses. This was observed in two field experiments. The species pool treatment did influence the macroinvertebrate community, as one species pool had slightly higher morphospecies diversity and hymenopterans that the other two species pools. This was likely due to the presence of an ant-tended legume, Chamaecrista facsciculata Michx., in one species pool. Overall, this research demonstrates that time since the cessation of disturbance (cultivatation) and plant communities influence macroinvertebrate communities in restored prairie. Restored prairies in the Midwest are likely to be colonized by exotic earthworms and cosmopolitan ants. More research is needed to reveal how they influence ecosystem functioning.Belowground, macroinvertebrate communities may not represent restoration “targets” and these “targets” may be hard to define if remnants are rare or there is a high degree of spatial variation on the landscape. Variation in plant communities above ground appears to influence the structure of aboveground macroinvertebrate communities more than variation within dominant species. Whether this aboveground variation is reflected is reflected belowground deserves further investigation.
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McCaffery, Magnus. "The influence of an ecosystem engineer on nutrient subsidies and fish invasions in Southwestern Montana." Diss., [Missoula, Mont.] : University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-03102010-102211.

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Bush, Laura Elizabeth. "Stability and variability of the ecosystem engineer Sabellaria alveolata on differing temporal and spatial scales." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/stability-and-variability-of-the-ecosystem-engineer-sabellaria-alveolata-on-differing-temporal-and-spatial-scales(1deae07d-a12b-4f61-9838-77e1a8bc9cca).html.

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Climate change is directly and indirectly impacting biota, A common prediction is that biogeographic ranges will extend poleward, with increases in abundance near the leading edge. Understanding how marine species will respond is hindered by a scarcity of long-term datasets. However, within the British Isles there is a long history of well-documented intertidal research. Historical data are stored in a variety of forms from grey-literature and national databases to published journals. Sabellaria alveolata is a conservationally important biogenic reef-forming species that reaches its northern range limit within the British Isles. The aim of this thesis was to establish if S. alveolata has responded predictably to climate change, and to investigate abiotic and biotic drivers of observed change. Through comparisons with historical and contemporary collated and collected data on different spatial scales, it was clear that S. alveolata has exhibited persistence in distribution, and stability in abundance and morphology on a long term, broad spatial scale with no significant difference in distribution, abundance or reef-forming morphology exhibited from the 1980s to the 2010s (>50 % stability in all paired data; Bush et al., Chapter 2). Within this, S. alveolata populations have demonstrated change on reduced spatial scales, increasing in response to increased temperature near the northern range edge, with some decreases in response to increased wave exposure well within the range (explaining ~ 50 % of the variance in both instances; Bush et al., Chapter 3). Through long-term monitoring studies, this study demonstrated high within-site variability. Additionally evidence was provided that, within Britain, the intertidal ecosystem engineers S. alveolata and Mytilus edulis are alternative stable state communities on pebble shores, with complete change of state from S. alveolata dominated to M. edulis dominated reef in 1 year (Bush & Davies, Chapter 4). State is partially maintained by settlement success in both instances (R2 ≥ 0.55). Finally, through a combination of traditional monitoring and laboratory techniques with state of the art modelling approaches, this study provided insights into reproductive strategy, larval dispersal and population connectivity patterns of S. alveolata and provided evidence of subpopulations of reef-forming species on British coastlines (e.g. Scotland to North Wales, Mid Wales, and South Wales to Southwest England; Bush et al., Chapter 5).
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Hochhalter, Samuel J. "Patch-Scale Effects of an Invasive Ecosystem Engineer on the Structure and Function of a Eutrophic Stream." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/307.

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Recent theoretical and technological advances in ecosystem science have dramatically expanded the ways in which scientists can pursue and explore ecological questions. For my thesis research, I integrated the recent theoretical concept of organisms as ecosystem engineers with the relatively recent development of stable isotope tracer tests to ask the question: how does the invasive common carp affect stream ecosystem structure and function? To investigate the structuring role of carp, I measured autotroph seasonal distribution and abundance and macroinvertebrate seasonal abundance and diversity within two stream reaches in Spring Creek, Utah, USA; one with low carp biomass (LCB) and one with high carp biomass (HCB). I installed a series of carp exclosures in the HCB reach to examine the response of the stream to carp exclusion. To explore the effects of carp on stream nitrogen dynamics, I performed a three week, continuous injection of 15N as ammonium chloride. The macrophyte and macroinvertebrate community was severely depauperate in the HCB reach compared to the LCB reach. The observed rapid colonization of a relatively abundant and diverse macrophyte and macroinvertebrate community at the carp exclusion sites in the HCB reach not only indicates that carp engineering reduces the abundance and diversity of these communities, but also highlights the importance of the spatial distribution of engineered and non-engineered patches in dictating the temporal scale of re-colonization. Carp engineering had a simplifying effect on stream N dynamics that ultimately limited the uptake and retention capacity of the HCB reach. For example, macrophytes played a dominant role in the N dynamics of the LCB reach by directly assimilating NH4, retaining N rich FBOM, and by providing habitat necessary to support an abundant and relatively diverse macroinvertebrate community that facilitated greater trophic transfer of nitrogen. Conversely, carp reduction of macrophytes in the HCB reach resulted in an overall reduction in areal uptake rates of NH4, reduced trophic transfer of N, and significantly reduced N retention. These results clearly indicate that carp engineering reduces macrophyte and macroinvertebrate abundance and diversity in streams and that N dynamics are simplified in carp engineered patches.
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Vitelli, Frederico. "Herbivory by Parma mccullochi (Pomacentridae) : its role as an ecosystem engineer in temperate algal-dominated reefs." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/583.

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Pomacentridae is one of the most representative families of herbivorous fishes inhabiting both tropical and temperate reefs, yet the vast majority of studies examining feeding within this family have been undertaken in tropical rather than temperate regions. Despite the high abundances of the pomacentrid Parma mccullochi in temperate waters of Western Australia, and their likely importance in removing algae from reefs in the region, there is a lack of information on their diet and their impact on the reef algal community. This study aims to determine the role of Parma mccullochi as an ecosystem engineer on temperate algal-dominated reefs in the metropolitan waters of Perth, Western Australia. To achieve this, the diet of P. mccullochi and any ontogenetic differences, and its impact on the reef in terms of algal composition and algal recruitment were determined. P. mccullochi in the temperate reefs of Western Australia was found to be a strict herbivore, with its diet comprising almost entirely red foliose and filamentous algae such as Hypnea spp., Ceramium sp. and Brongniatrella sp., and showing no ontogenetic shift. Based on electivity indices, P. mccullochi showed a positive selection for specific algal taxa such as Brongniartella sp., Dasyclonium sp., Hypnea spp. and Dictyopteris spp. The species composition of macroalgae differed significantly between inside and outside P. mccullochi territories (P = 0.010), and a caging experiment in P. mccullochi territories indicated a moderate effect on the composition of recruiting algae (P = 0.067). Algal assemblages inside the territories were characterised by Hypnea spp. and Dasyclonium spp., while those outside the territories were characterised by the brown algae Ecklonia radiata and Sargassum spp., the foliose red alga Rhodimenia sonderi and the coralline red alga Amphiroa anceps. Total algal biomass was significantly lower (P = 0.0126) while species richness was higher (P = 0.0114) inside compared to outside territories. This study, therefore, provides the evidence to refute the theory that temperate Pomacentridae have a low impact on the temperate reefs (Jones 1992). P. mccullochi has the capacity to structure the benthic composition of reefs and maintain high biodiversity patches within kelp canopies. This effect is amplified by the high abundances of the species observed in Perth metropolitan waters, and can therefore be considered an ecosystem engineer/landscaper of temperate algal dominated reefs, highlighting its importance in ecosystem processes of temperate reefs in the region.
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James, Alexandra Iona Biological Earth &amp Environmental Sciences Faculty of Science UNSW. "Development of resource-rich patches by soil-disturbing animals in arid environments." Awarded by:University of New South Wales. Biological, Earth & Environmental Sciences, 2009. http://handle.unsw.edu.au/1959.4/44353.

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In arid landscapes limited resources are concentrated into fertile patches that allow greater productivity than would otherwise be expected. Fertile patches are created and maintained by processes that modify soil topography and interrupt the flow of resources across the landscape. These processes may be abiotic or biotic in origin. Species that modify, maintain or create habitat have been termed ecosystem engineers. One group of soil disturbing ecosystem engineers creates fertile patches by modifying soil microtopography through foraging for food and creating habitat. This thesis examines the effects of soil foraging animals on resource concentration in arid environments and how effects are moderated by species and landscape. Chapter 1 provides an overview of the importance of fertile patches in arid systems and describes previous research on the effects of ecosystem engineers in arid environments. Chapter 2 examines how fertile patch creation by a well-studied arid zone engineer, the ant, varies between ant species and landforms, demonstrating that while we can generalise about the effects of ant nests on water flow and nutrient levels, differences in soil type, nest density and ant species across sites are likely to moderate these effects. Chapters 3, 4 and 5 compare the engineering effects of reintroduced native species, the Greater bilby (Macrotis lagotis) and Burrowing bettong (Bettongia lesueur) with the Sand goanna (Varanus gouldii) and the invasive European rabbit (Oryctolagus cuniculus) across three Australian landforms, revealing differences between reintroduced and invasive engineers at the both patch and landscape scales. At the landscape scale, differences in pit densities and resource concentration in foraging pits between landforms suggest that fertile patch development is not uniform. Chapter 6 examines whether the structure of the pit or the presence of litter per se explains observed increases in plant germination in foraging pits, and compares temperature and soil moisture conditions in bilby and bettong pits to the soil surface. Chapter 7 is a review that builds upon previous chapters, published and unpublished literature of the potential for reintroductions of ecosystem engineers to restore ecosystem function in degraded environments. Chapter 8 summarises the research presented in this thesis and its implications, and suggests directions for future work.
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Martin, Stephanie Ann, and Marietjie Landman. "The Aardvark as an ecological engineer in the Eastern Karoo: dig patterns and emergent processes." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/11952.

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Species which play particularly important roles in ecosystem patterns and processes are recognised as keystone species or ecosystem engineers. The conservation of these species is critical for the maintenance of the ecological role they play in ecosystem function. The aardvark, Orycteropus afer, is known to play a role in biopedturbation through digging for refuges and for prey, and as a consequence of these digging activities is expected to serve the role of an ecosystem engineer and keystone species. This study aimed to describe and quantify the ecological patterns and processes driven by the aardvark through their digging activities, within the eastern Karoo, and thereby evaluate the significance of aardvarks as ecosystem engineers and keystone species in a semi-arid environment. The landscape pattern (dig abundance and distribution) and soil displacement of aardvark forage and refuge digs in a semi-arid Karoo landscape, as well as the ecological processes (generating fertile, seed retention hotspots) driven by aardvark forage digs was measured. Refuge digs occurred in the highest densities in areas characterised by a specific suite of soil, vegetation and elevation features, while forage digs occurred in high abundance in most habitats measured, and were likely driven by prey availability. Forage digs served as litter and seed retention hotspots, with accelerated decomposition rates of litter as a function of increased soil moisture in digs. The functional processes (i.e. resource capture, shelter for plants and animals, germination sites, soil aeration, organic turnover, mineralization rates, fertile soil displacement and transport) driven by aardvark digs are not restricted to refuge digs. Forage digs occurred in most habitats measured and their functional role is unique and perhaps greater across the landscape in comparison to refuge digs. The aardvark has a disproportionate effect in ecosystems, in terms of its refuge and forage digs relative to its abundance and therefore its role as a keystone species and ecosystem engineer is confirmed. Conservation and protection of this species is therefore essential to maintain its important role in ecosystem function.
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Njozela, Cuma. "The role of the sandprawn, Callichirus kraussi, as an ecosystem engineer in a temporarily open/closed Eastern Cape estuary, South Africa." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001539.

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The role of the sandprawn, Callichirus (=Callianassa) kraussi (Stebbing), as an ecosystem engineer was assessed in the lower reach of the temporarily open/closed Kasouga Estuary situated along the Eastern Cape coastline of southern Africa over the period April 2010 to June 2011. The study comprised two distinct components, a field study and a caging experiment. The field study assessed the correlation between sand prawn densities and selected physico-chemical (organic content of the sediment and bioturbation) and biological (microphytobenthic algal concentrations and macrobenthic abundance and biomass) variables in 50 quadrants in the lower reach of the estuary. Densities of the sand prawn within the quadrants ranged from 0 to 156 ind m⁻² (mean = 37 ind m⁻²). There were no significant correlations between the densities of the sandprawn and the estimates of the organic content of the sediment and the abundance and biomass of the macrofauna (P > 0.05 in all cases). Numerical analyses failed to identify any effect of the sandprawn density on the macrofaunal community structure. The rate of bioturbation was, however, strongly correlated to the sand prawn density. Similarly, the microphytobenthic alga concentrations were significantly negatively correlated to the sand prawn densities ((P < 0.05). The absence of any distinct impact of the sandprawn on the macrobenthic community structure appeared to be related to their low densities in the lower reach of the estuary during the study. To better understand the role of the sandprawn as an ecosystem engineer, a caging experiment was conducted using inclusion and exclusion treatments (n= 5 for each treatment). Densities of the sandprawn in the inclusion treatments (80 ind m⁻²) were in the range of the natural densities within the estuary. The experiment was conducted over a period of 18 weeks in the lower reach of the estuary during summer. The presence of the sandprawn, C kraussi, contributed to a significant decrease in the microphytobenthic algal concentrations and the abundance and biomass of the macrofauna (P < 0.05 in all cases). The decrease in the microphytobenthic algal concentrations in the presence of the sandprawn appeared to be related to the res-suspension of the sediments (bioturbation) generated by the burrowing and feeding activities of the sandprawn. The observed decrease in macrofaunal abundances and biomass in the inclusion treatments appeared to be mediated by both the decreased food availability (mainly the microphytobenthic algae) and the burial of organisms within the sediments. Numerical analysis indicated that the sandprawn did, however, not contribute to a change in the species composition of the macrofauna. Results of the current study indicate that C.kraussi plays an important role in structuring the invertebrate community and energy flow within temporarily/open closed Kasouga Estuary.
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Posthumus, Erin Elizabeth. "Do Red Squirrel Middens Promote Vertebrate Species Diversity?" Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/294022.

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The modifications animals make to their environments can be critical to species diversity. Red squirrels (Tamiasciurus hudsonicus) create large piles of conifer cone debris (middens) and are hypothesized to function as a keystone species due to positive associations between middens and other vertebrate species. We assessed vegetation and landscape structure at middens with a resident red squirrel for varying consistencies over the prior 5 years and surveyed mammals and birds at the community and population level. After accounting for vegetation and landscape characteristics, red squirrel-created resources positively influenced species richness of medium and large mammals and ground foraging birds, abundance of deer mice (Peromyscus maniculatus) and ground foraging birds, and activity of cliff chipmunks (Tamias dorsalis). Increased knowledge of the interaction strength of the red squirrel with its environment may be used to inform decisions in forest management and restoration and offer insight on the conservation value of larderhoarding mammals.
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Bancroft, Wesley J. "Environmental response to burrowing seabird colonies : a study in ecosystem engineering." University of Western Australia. School of Animal Biology, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0064.

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[Truncated abstract] Ecosystem engineers are organisms that physically modify habitat in a manner that modulate resource flows and species within ecosystems. Ecosystem engineering is distinct from classical interactions (competition, predation, parasitism and mutualism) in that it does not involve direct trophic exchange between organisms. The term ‘ecosystem engineer’ is a recently adopted one, and we are just beginning to investigate the occurrence and impact of engineers in ecosystems. My thesis explores the ecosystem engineering actions of Wedge-tailed Shearwaters, Puffinus pacificus, in a Mediterranean island, heathland ecosystem. I have approached this by (1) describing and quantifying the physical impact of these engineers, and (2) describing and quantifying the effects that these actions have on three major ecosystem components: the soil, the vascular plants, and the vertebrate fauna. Wedge-tailed Shearwaters are procellariid seabirds that excavate nesting burrows on offshore islands. The birds are colonial nesters, and on Rottnest Island, 17 km off the mainland coast of south-western Western Australia, their colonies have expanded considerably in recent decades. The expansion fits the trend observed in other tropicalorigin seabirds that breed in south-western Australia. In the last ten years, two new colonies have appeared (in a total of six) and the number of burrows on the island has almost doubled, to 11 745 ± 1320SE. In the same period the area occupied by the birds has increased by almost half ...
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Books on the topic "Ecosystem engineer"

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Johnston, Carol A. Beavers: Boreal Ecosystem Engineers. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61533-2.

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Bergamin, Giovanni, Mauro Guerrini, and Carlotta Alpigiano, eds. Bibliographic Control in the Digital Ecosystem. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-544-8.

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With the contributions of international experts, the book aims to explore the new boundaries of universal bibliographic control. Bibliographic control is radically changing because the bibliographic universe is radically changing: resources, agents, technologies, standards and practices. Among the main topics addressed: library cooperation networks; legal deposit; national bibliographies; new tools and standards (IFLA LRM, RDA, BIBFRAME); authority control and new alliances (Wikidata, Wikibase, Identifiers); new ways of indexing resources (artificial intelligence); institutional repositories; new book supply chain; “discoverability” in the IIIF digital ecosystem; role of thesauri and ontologies in the digital ecosystem; bibliographic control and search engines.
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SAVEL'EVA, Ekaterina, Anna Fedchenko, and Ol'ga Gegechkori. Fundamentals of labor organization in digital ecosystems. ru: INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1063619.

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The textbook comprehensively presents the regularities of the formation of the theory and practice of labor organization in digital ecosystems. The key issues of digital labor organization are considered: development and implementation of project-network forms of division and cooperation of labor; design of optimal labor processes based on modern information and communication technologies; formation of rational labor mobility and labor flows; development and implementation of sound norms and rules in the field of digital labor; training of labor agents to work in the digital space; creation of balanced remuneration systems, recruitment and retention of labor agents, etc. Methodological principles of digital labor organization are highlighted, as well as approaches for studying and solving theoretical and practical issues of modern labor organization. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students studying in the areas of training 38.03.03 "Personnel Management", 38.03.02 "Management", 38.03.01 "Economics", studying labor organization issues, as well as project managers, HR specialists, labor organization engineers, ergonomists, production coordinators in distributed communities, community development program coordinators, course students, graduate students, teachers.
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Singh, Pardeep, Rishikesh Singh, Pramit Verma, Rahul Bhadouria, Ajay Kumar, and Mahima Kaushik, eds. Plant-Microbes-Engineered Nano-particles (PM-ENPs) Nexus in Agro-Ecosystems. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66956-0.

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Re-greening the environment: Careers in clean-up, remediation, and restoration. New York: Crabtree Pub. Company, 2011.

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Symposium, on Ecology of Large Bioturbators in Tidal Flats and Shallow Sublittoral Sediments (2003 Nagasaki Japan). Proceedings of the Symposium on Ecology of Large Bioturbators in Tidal Flats and Shallow Sublittoral Sediments--from individual behavior to their role as ecosystem engineers: 1-2 November, 2003, Nagasaki University, Nagasaki, Japan. Nagasaki, Japan: Marine Research Institute, Nagasaki University, 2004.

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Symposium, on Ecology of Large Bioturbators in Tidal Flats and Shallow Sublittoral Sediments (2003 Nagasaki Japan). Proceedings of the Symposium on Ecology of Large Bioturbators in Tidal Flats and Shallow Sublittoral Sediments--from individual behavior to their role as ecosystem engineers: 1-2 November, 2003, Nagasaki University, Nagasaki, Japan. Nagasaki, Japan: Marine Research Institute, Nagasaki University, 2004.

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(Editor), Kim Cuddington, James E. Byers (Editor), William G. Wilson (Editor), and Alan Hastings (Editor), eds. Ecosystem Engineers (Theoretical Ecology). Academic Press, 2007.

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(Editor), Kim Cuddington, James E. Byers (Editor), William G. Wilson (Editor), and Alan Hastings (Editor), eds. Ecosystem Engineers (Theoretical Ecology). Academic Press, 2007.

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Johnston, Carol A. Beavers: Boreal Ecosystem Engineers. Springer, 2018.

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Book chapters on the topic "Ecosystem engineer"

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Chatterjee, Antra, Shbbir R. Khan, and Huma Vaseem. "Exploring the Role of Mycorrhizae as Soil Ecosystem Engineer." In Mycorrhizosphere and Pedogenesis, 73–93. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6480-8_5.

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Visser, Sanne, Elisa Thébault, and Peter C. Ruiter. "Ecosystem species diversity Species Diversity Ecosystems Engineers Ecosystem Engineers , Keystone Species." In Encyclopedia of Sustainability Science and Technology, 3299–306. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_569.

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de Souza, Henrique Jesus, and Jacques Hubert Charles Delabie. "Ecosystem Engineers." In Encyclopedia of Social Insects, 1–6. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-90306-4_186-1.

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Lawton, John H., and Clive G. Jones. "Linking Species and Ecosystems: Organisms as Ecosystem Engineers." In Linking Species & Ecosystems, 141–50. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1773-3_14.

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Jones, Clive G., John H. Lawton, and Moshe Shachak. "Organisms as Ecosystem Engineers." In Ecosystem Management, 130–47. New York, NY: Springer New York, 1994. http://dx.doi.org/10.1007/978-1-4612-4018-1_14.

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Johnston, Carol A. "Ecosystem Engineers: Beaver Ponds." In Beavers: Boreal Ecosystem Engineers, 13–49. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61533-2_2.

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Lavelle, Patrick. "Earthworms as Ecosystem Engineers." In Encyclopedia of Agrophysics, 233–35. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3585-1_45.

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de Visser, Sanne, Elisa Thébault, and Peter C. de Ruiter. "Ecosystem Engineers, Keystone Species." In Ecological Systems, 59–68. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5755-8_4.

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Passarelli, Claire, Cédric Hubas, and David M. Paterson. "Mudflat Ecosystem Engineers and Services." In Mudflat Ecology, 243–69. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99194-8_10.

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de Souza, Henrique Jesus, and Jacques Hubert Charles Delabie. "Ecosystem Engineers: Ants and Termites." In Encyclopedia of Social Insects, 347–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-28102-1_186.

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Conference papers on the topic "Ecosystem engineer"

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Mashegov, Petr N. "Engineer Supply of University Research Infrastructure and Ecosystem of Small Innovative Enterprises." In International Conference «Responsible Research and Innovation. Cognitive-crcs, 2017. http://dx.doi.org/10.15405/epsbs.2017.07.02.80.

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Sunny Li Sun, Victor Z. Chen, Sanwar A. Sunny, and Jie Chen. "Venture capital as an ecosystem engineer for regional innovation in an emerging market." In 2017 IEEE Technology & Engineering Management Conference (TEMSCON). IEEE, 2017. http://dx.doi.org/10.1109/temscon.2017.7998347.

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Watson, Bryan C., Sanaya Kriplani, Marc J. Weissburg, and Bert Bras. "Use of a Trophic Structure Test Bed to Validate a New Systems-of-Systems Resilience Metric." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23932.

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Abstract Systems of Systems (SoS) combine complex systems such as financial, transportation, energy, and healthcare systems to provide greater functionality. A failure in a constituent system, however, can render the entire SoS ineffective by causing cascading faults. One method to prevent constituent faults from compromising SoS performance is to increase the SoS’s “resilience,” a measure of the SoS’s ability to cope with these faults and efficiently recover. Attempts to engineer improved resilience require a metric to measure resilience across different SoS architectures (network arrangements). In a previous work, the System of System Resilience Metric (SoSRM) was presented as a possible solution, but this new metric requires additional testing. This work examines the key question: “How can natural ecosystem characteristics be used to validate the SoSRM metric?” We hypothesize that the analysis of a test bed of generic ecosystems will produce SoSRM values that will positively correlate with a triangular trophic structure (wide base), validating SoSRM as a useful design metric. First principles for test bed creation are presented including biodiversity, trophic structure, and the role of detritus. SoSRM is measured for 31 case studies in a trophic structure test bed. Ecosystem network structure is quantified with graph theory. SoSRM correlates as expected with ecosystem network structure (r2 = .5016, n = 31), thus providing a validation of SoSRM as a design tool. As a final check, tests are conducted to ensure SoSRM is independent of trivial network characteristics (i.e. the number of nodes or links). By validating SoSRM, we provide a foundation for future work that focuses on increasing SoS resilience with biologically inspired design heuristics.
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Surprenant, Rachel L., James G. Gehling, and Mary L. Droser. "AN UNLIKELY ECOSYSTEM ENGINEER: EXPLORING THE ROLE OF FUNISIA DOROTHEA AS A CONTROL ON DIVERSITY IN ONE OF EARTH’S EARLIEST COMPLEX ECOSYSTEMS, THE EDIACARA MEMBER, SOUTH AUSTRALIA." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-355070.

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Kosmadoudi, Zoe, Theodore Lim, James Ritchie, Ying Liu, and Raymond C. W. Sung. "Analytic Models in Game Based Productive Systems." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34366.

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Current computer-aided design (CAD) applications deliver limited user experience due to their complex functionality and step-by-step evolution; on the contrary, games offer memorable and formative experiences to their users. Hence, the article focuses on the architecture characteristics of games and CAD with a particular interest in developing and evaluating a CAD system embedded with game mechanics for mechanical engineering design. To establish the benefit of game-enriched engineering design ecosystem preliminary experiments were conducted to investigate engineer affect whilst carrying out parametric design tasks in a game-based CAD UI. By analysing their psycho-physiological signals and action log data an interaction model was established to identify which feedback game mechanics contributed the most in the user’s design experience.
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Nampa, Gosego, and Mduduzi Ndlovu. "CANCELLED: Ecosystem engineer hiding under the shade: Mutualistic association between Num-num (Carissa bispinosa) and Snouted harvester termites (Trinervitermes trinervoides) in a semi-arid savanna." In 5th European Congress of Conservation Biology. Jyväskylä: Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107103.

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Bailey, Reid, Janet K. Allen, Bert Bras, and Farrokh Mistree. "A System Level Approach to the Design of an Industrial Ecosystem." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/dac-3962.

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Abstract Industrial ecology is a nascent concept in which systems of industries work together to reduce their net negative environmental impact. The work in this paper represents an initial step towards the advancement of industrial ecology through quantitative analysis. A system dynamics model of an existing industrial ecosystem is developed in STELLA® and used to represent the system level behavior. A design tool, the Robust Concept Exploration Method (RCEM), that has been used previously for more traditional design problems, e.g., engine design and airplane design, is successfully applied to the system level design of an industrial ecosystem. The results in this paper are intended to provide support for decision makers in complex industrial ecosystems and, more importantly, to increase the knowledge about designing industrial ecosystems. As the concept of industrial ecology progresses, the analysis of ecosystems will become more complex, increasing the need for design at the system level to be addressed with tools such as the RCEM.
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Clare, Alan. "Selecting a suitable Ballast Water Treatment System for a small general cargo vessel." In IMarEST Ballast Water Technology Conference. IMarEST, 2017. http://dx.doi.org/10.24868/bwtc6.2017.007.

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The main questions which will be addressed in this paper are; which ballast water treatment system (BWTS) should be fitted to a fleet of small general cargo ships that are trading in Northern Europe, including the Baltic Sea, and how will the implementation of the Ballast Water Management Convention (BWMC, herewith “the Convention”) will affect the engine room crew? There is a large capital cost in the purchasing and fitting of such a system, and as the vessels in question have some special requirements, such as operating in very cold weather and having small engine rooms, the correct system must be chosen. As the small engine room crew, consisting of a chief engineer and an oiler, must be able to operate, maintain and repair the system, the chosen system will impact on their working life while onboard these vessels. To answer the research questions, all the chief engineers employed by the Company and a number of shore superintendents from other shipping companies, involved in the management of small general cargo ships were surveyed using questionnaires. Their responses were then analysed and conclusions drawn from this analysis. The criteria required to choose a ballast water treatment system was narrowed down during the research, and then used to find the most suitable system for the company vessels. A small number of systems currently in production from well-known manufacturers were evaluated during this process. Following evaluation of the systems using the responses from the respondents, the most suitable system for the company vessels was identified and chosen. The need for training was also identified to successfully operate and maintain the system, and to reduce any additional stress that may be experienced by the crew due to the BWMC. The research also contains a review of the BWMC, and a comparison with measures brought in by the United States Coast Guard (USCG), which include the transfer of harmful aquatic organisms and pathogens, (HAOP) by merchant vessels from area to area by other methods that are ignored by the BWMC. It also considers the long-term health effects on the crew and marine ecosystem from treated ballast water using some types of treatment systems. The report of the survey provides scope for a more informed decision making process when choosing a BWTS for a small general cargo vessel. However, in addition, the process can be applied to any type of vessel as many of the issues encountered will be the same regardless of size and trading pattern.
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Gaddam, Manikantam, Matthew Takyi-Micah, Vishwa Kasoju, and Arvind Santhanakrishnan. "Video: Upside Down Ecosystem Engineers." In 70th Annual Meeting of the APS Division of Fluid Dynamics. American Physical Society, 2017. http://dx.doi.org/10.1103/aps.dfd.2017.gfm.v0089.

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"Changing Paradigms of Technical Skills for Data Engineers." In InSITE 2018: Informing Science + IT Education Conferences: La Verne California. Informing Science Institute, 2018. http://dx.doi.org/10.28945/4001.

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Aim/Purpose: [This Proceedings paper was revised and published in the 2018 issue of the journal Issues in Informing Science and Information Technology, Volume 15] This paper investigates the new technical skills that are needed for Data Engineering. Past research is compared to new research which creates a list of the 20 top tech-nical skills required by a Data Engineer. The growing availability of Data Engineering jobs is discussed. The research methodology describes the gathering of sample data and then the use of Pig and MapReduce on AWS (Amazon Web Services) to count occurrences of Data Engineering technical skills from 100 Indeed.com job advertisements in July, 2017. Background: A decade ago, Data Engineering relied heavily on the technology of Relational Database Management Sys-tems (RDBMS). For example, Grisham, P., Krasner, H., and Perry D. (2006) described an Empirical Soft-ware Engineering Lab (ESEL) that introduced Relational Database concepts to students with hands-on learning that they called “Data Engineering Education with Real-World Projects.” However, as seismic im-provements occurred for the processing of large distributed datasets, big data analytics has moved into the forefront of the IT industry. As a result, the definition for Data Engineering has broadened and evolved to include newer technology that supports the distributed processing of very large amounts of data (e.g. Hadoop Ecosystem and NoSQL Databases). This paper examines the technical skills that are needed to work as a Data Engineer in today’s rapidly changing technical environment. Research is presented that re-views 100 job postings for Data Engineers from Indeed (2017) during the month of July, 2017 and then ranks the technical skills in order of importance. The results are compared to earlier research by Stitch (2016) that ranked the top technical skills for Data Engineers in 2016 using LinkedIn to survey 6,500 peo-ple that identified themselves as Data Engineers. Methodology: A sample of 100 Data Engineering job postings were collected and analyzed from Indeed during July, 2017. The job postings were pasted into a text file and then related words were grouped together to make phrases. For example, the word “data” was put into context with other related words to form phrases such as “Big Data”, “Data Architecture” and “Data Engineering”. A text editor was used for this task and the find/replace functionality of the text editor proved to be very useful for this project. After making phrases, the large text file was uploaded to the Amazon cloud (AWS) and a Pig batch job using Map Reduce was leveraged to count the occurrence of phrases and words within the text file. The resulting phrases/words with occurrence counts was download to a Personal Computer (PC) and then was loaded into an Excel spreadsheet. Using a spreadsheet enabled the phrases/words to be sorted by oc-currence count and then facilitated the filtering out of irrelevant words. Another task to prepare the data involved the combination phrases or words that were synonymous. For example, the occurrence count for the acronym ELT and the occurrence count for the acronym ETL were added together to make an overall ELT/ETL occurrence count. ETL is a Data Warehousing acronym for Extracting, Transforming and Loading data. This task required knowledge of the subject area. Also, some words were counted in lower case and then the same word was also counted in mixed or upper case, thus producing two or three occur-rence counts for the same word. These different counts were added together to make an overall occur-rence count for the word (e.g. word occurrence counts for Python and python were added together). Fi-nally, the Indeed occurrence counts were sorted to allow for the identification of a list of the top 20 tech-nical skills needed by a Data Engineer. Contribution: Provides new information about the Technical Skills needed by Data Engineers. Findings: Twelve of the 20 Stitch (2016) report phrases/words that are highlighted in bold above matched the tech-nical skills mentioned in the Indeed research. I considered C, C++ and Java a match to the broader cate-gory of Programing in the Indeed data. Although the ranked order of the two lists did not match, the top five ranked technical skills for both lists are similar. The reader of this paper might consider the skills of SQL, Python, Hadoop/HDFS to be very important technical skills for a Data Engineer. Although the programming language R is very popular with Data Scientists, it did not make the top 20 skills for Data Engineering; it was in the overall list from Indeed. The R programming language is oriented towards ana-lytical processing (e.g. used by Data Scientists), whereas the Python language is a scripting and object-oriented language that facilitates the creation of Data Pipelines (e.g. used by Data Engineers). Because the data was collected one year apart and from very different data sources, the timing of the data collection and the different data sources could account for some of the differences in the ranked lists. It is worth noting that the Indeed research ranked list introduced the technical skills of Design Skills, Spark, AWS (Amazon Web Services), Data Modeling, Kafta, Scala, Cloud Computing, Data Pipelines, APIs and AWS Redshift Data Warehousing to the top 20 ranked technical skills list. The Stitch (2016) report that did not have matches to the Indeed (2017) sample data for Linux, Databases, MySQL, Business Intelligence, Oracle, Microsoft SQL Server, Data Analysis and Unix. Although many of these Stitch top 20 technical skills were on the Indeed list, they did not make the top 20 ranked technical skills. Recommendations for Practitioners: Some of the skills needed for Database Technologies are transferable to Data Engineering. Recommendation for Researchers: None Impact on Society: There is not much peer reviewed literature on the subject of Data Engineering, this paper will add new information to the subject area. Future Research: I'm developing a Specialization in Data Engineering for the MS in Data Science degree at our university.
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Reports on the topic "Ecosystem engineer"

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Salter, R., Quyen Dong, Cody Coleman, Maria Seale, Alicia Ruvinsky, LaKenya Walker, and W. Bond. Data Lake Ecosystem Workflow. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40203.

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The Engineer Research and Development Center, Information Technology Laboratory’s (ERDC-ITL’s) Big Data Analytics team specializes in the analysis of large-scale datasets with capabilities across four research areas that require vast amounts of data to inform and drive analysis: large-scale data governance, deep learning and machine learning, natural language processing, and automated data labeling. Unfortunately, data transfer between government organizations is a complex and time-consuming process requiring coordination of multiple parties across multiple offices and organizations. Past successes in large-scale data analytics have placed a significant demand on ERDC-ITL researchers, highlighting that few individuals fully understand how to successfully transfer data between government organizations; future project success therefore depends on a small group of individuals to efficiently execute a complicated process. The Big Data Analytics team set out to develop a standardized workflow for the transfer of large-scale datasets to ERDC-ITL, in part to educate peers and future collaborators on the process required to transfer datasets between government organizations. Researchers also aim to increase workflow efficiency while protecting data integrity. This report provides an overview of the created Data Lake Ecosystem Workflow by focusing on the six phases required to efficiently transfer large datasets to supercomputing resources located at ERDC-ITL.
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Taylor, Jimmy D., Greg K. Yarrow, and James E. Miller. Beavers. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, March 2017. http://dx.doi.org/10.32747/2017.7207729.ws.

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The American beaver (Castor canadensis) is known as an “ecosystem engineer” because of the benefits their dams provide to biological diversity and ecosystem function. It also is considered a “keystone species” because of its ability to transform its environment, creating new habitats upon which other species depend. Despite the many positive benefits beavers provide through foraging and dam building, beavers also create conflict with people when their activities cause damage. The focus of this publication is to provide basic information on beaver ecology, damage, and management.
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Kennedy, Alan, Andrew McQueen, Mark Ballentine, Brianna Fernando, Lauren May, Jonna Boyda, Christopher Williams, and Michael Bortner. Sustainable harmful algal bloom mitigation by 3D printed photocatalytic oxidation devices (3D-PODs). Engineer Research and Development Center (U.S.), April 2022. http://dx.doi.org/10.21079/11681/43980.

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The impacts of Harmful Algal Blooms (HAB), often caused by cyanobacteria (Figure 1), on water resources are increasing. Innovative solutions for treatment of HABs and their associated toxins are needed to mitigate these impacts and decrease risks without introducing persistent legacy contaminants that cause collateral ecosystem impacts. This technical note (TN) identifies novel opportunities enabled by Additive Manufacturing (AM), or 3D printing, to produce high surface area advanced material composites to rapidly prototype sustainable environmental solutions for aquatic nuisance species control. This innovative research explores deployment of 3D-printable polymer composite structures containing nano-scale photocatalysts for targeted open water treatment of HABs that are customizable to the site-of-concern and also retrievable, reusable, and sustainable. The approach developed to control cyanobacteria HAB events has the potential to augment or replace broadcast, non-specific chemical controls that otherwise put non-target species and ecological resources at long-term risk. It can also augment existing UV-treatment HAB treatment control measures. The expected research outcome is a novel, effective, and sustainable HAB management tool for the US Army Corps of Engineers (USACE) and resource managers to deploy in their HAB rapid response programs. The research will provide a framework for scale-up into other manufacturing methods (e.g., injection molding) to produce the devices in bulk (quickly and efficiently). Research for this project title “Mitigation of Harmful Algal Bloom Toxins using 3D Printed Photocatalytic Materials (FY21-23)” was sponsored by the US Army Engineer Research Development Center’s (ERDC) Aquatic Nuisance Species Research Program (ANSRP).
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Bryant, Duncan, and Leigh Provost. Walter Marine and Atlantic Reefmaker Wave Attenuator : wave transmission testing results. Engineer Research and Development Center (U.S.), February 2022. http://dx.doi.org/10.21079/11681/43303.

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As part of a testing service agreement with Walter Marine and Atlantic Reefmaker, a 1:5.2 physical model of the Reefmaker Wave Attenuator was constructed and tested by the US Army Engineer Research and Development Center to evaluate its influence on wave attenuation. The tested prototype wave periods ranged from 2.5 to 8 sec with prototype wave heights between 1 ft and 6.5 ft. The Reefmaker Wave Attenuator included orthogonal and square designs and was tested under a variety of configurations including a suspended configuration, a bed-mounted configuration, and a rotated configuration. Testing demonstrated that depending on configurations and wavelength, the wave transmission coefficients ranged from 0.29 to 0.70. The most improvement, however, was demonstrated when testing the square unit designs with transmission coefficients, kt, below 0.51. The smallest kt of 0.29 occurred during square unit testing, which consisted of eight bed-mounted, square Ecosystem disks plus a base unit (24.05 in. freeboard) and with a wave period of 3.0 sec and height of 0.84 ft. Of all 134 tests performed, including the suspended case, the average transmission through the structure was 58%.
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van Riel, M. C., J. A. Vonk, R. Noordhuis, and P. F. M. Verdonschot. Novel ecosystems in urbanized areas under multiple stressors: Using ecological history to detect and understand ecological processes of an engineered ecosystem (lake Markermeer). Wageningen: Freshwater ecosystems, Wageningen Environmental Research, 2019. http://dx.doi.org/10.18174/494856.

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Wainger, Lisa, Anna McMurray, Hannah Griscom, Elizabeth Murray, Janet Cushing, Charles Theiling, and Shawn Komlos. A proposed ecosystem services analysis framework for the U.S. Army Corps of Engineers. Engineer Research and Development Center (U.S.), August 2020. http://dx.doi.org/10.21079/11681/37741.

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Carrillo, Carra, S. McKay, Safra Altman, and Todd Swannack. Ecological model development : Toolkit for interActive Modeling (TAM). Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45101.

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Ecological models provide crucial tools for informing many aspects of ecosystem restoration and management, ranging from increasing understanding of complex ecological functions to prioritizing restoration sites and quantifying benefits for project reporting. The diversity of ecosystem types and restoration objectives often precludes the use of existing models; as such, model development is commonly required to inform restoration decision-making. Index-based habitat models are a common approach for assessing ecosystem condition. These models relate habitat quality to species’ distributions. Habitat suitability (quality) typically ranges on a scale from 0 to 1. Habitat models have been developed to assess habitat suitability for specific taxa, communities, or ecosystem functions. Restoration-project timelines often require that these models be developed rapidly and in conjunction with many external stakeholders or partners. Here, the Toolkit for interActive Modeling (TAM) is proposed as a platform for rapidly developing index-based models, particularly for US Army Corps of Engineers’ (USACE) ecosystem-restoration or mitigation planning processes. The TAM is a consistent quantitative framework that allows for development of a generic platform for index-based model development.
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Herman, Brook. Evaluation of methods for monitoring herbaceous vegetation. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45100.

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This special report seeks to advance the field of ecological restoration by reviewing selected reports on the processes, procedures, and protocols associated with monitoring of ecological restoration projects. Specifically, this report identifies selected published herbaceous vegetation monitoring protocols at the national, regional, and local levels and then evaluates the recommended sampling design and methods from these identified protocols. Finally, the report analyzes the sampling designs and methods in the context of monitoring restored herbaceous vegetation at US Army Corps of Engineers (USACE) ecosystem restoration sites. By providing this information and the accompanying analyses in one document, this special report aids the current effort to standardize data-collection methods in monitoring ecosystem restoration projects.
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Herman, Brook, Todd Swannack, Molly Reif, Nathan Richards, Tomma Barnes, and Candice Piercy. Framework for a general restoration model for ecosystems with anadromous fish for U.S. Army Corps of Engineers. Engineer Research and Development Center (U.S.), March 2019. http://dx.doi.org/10.21079/11681/32265.

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Gailani, Joseph, Burton Suedel, Andrew McQueen, Timothy Lauth, Ursula Scheiblechner, and Robert Toegel. Supporting bank and near-bank stabilization and habitat using dredged sediment : documenting best practices. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/44946.

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In-water beneficial use of dredged sediment provides the US Army Corps of Engineers (USACE) the opportunity to increase beneficial use while controlling costs. Beneficial use projects in riverine environments include bank and near-bank placement, where sediments can protect against bank erosion and support habitat diversity. While bank and near-bank placement of navigation dredged sediment to support river-bank stabilization and habitat is currently practiced, documented examples are sparse. Documenting successful projects can support advancing the practice across USACE. In addition, documentation identifies data gaps required to develop engineering and ecosystem restoration guidance using navigation-dredged sediment. This report documents five USACE and international case studies that successfully applied these practices: Ephemeral Island Creation on the Upper Mississippi River; Gravel Island Creation on the Danube River; Gravel Bar Creation on the Tombigbee River; Wetland Habitat Restoration on the Sacramento-San Joaquin River Delta; and Island and Wetland Creation on the Lower Columbia River Estuary. Increased bank and near-bank placement can have multiple benefits, including reduced dredge volumes that would otherwise increase as banks erode, improved sustainable dredged sediment management strategies, expanded ecosystem restoration opportunities, and improved flood risk management. Data collected from site monitoring can be applied to support development of USACE engineering and ecosystem restoration guidance.
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You might also be interested in the extended bibliographies on the topic 'Ecosystem engineer' for particular source types:
Journal articles Dissertations / Theses Books
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