Relevant bibliographies by topics / Habitat units

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Habitat units'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Habitat units"

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Stegmayr, Birgitta, Kjell Asplund, Kerstin Hulter-Åsberg, et al. "Stroke Units in Their Natural Habitat." Stroke 30, no. 4 (1999): 709–14. http://dx.doi.org/10.1161/01.str.30.4.709.

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Seenan, Pamela, Marita Long, and Peter Langhorne. "Stroke Units in Their Natural Habitat." Stroke 38, no. 6 (2007): 1886–92. http://dx.doi.org/10.1161/strokeaha.106.480871.

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Schwartz, John S., and Edwin E. Herricks. "Fish use of stage-specific fluvial habitats as refuge patches during a flood in a low-gradient Illinois stream." Canadian Journal of Fisheries and Aquatic Sciences 62, no. 7 (2005): 1540–52. http://dx.doi.org/10.1139/f05-060.

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A stage-specific habitat classification scheme was developed emphasizing the ecological importance of habitat space as flow refugia for fish. Habitat units were based on planform and channel morphology and the resulting three-dimensional hydraulic patterns that form during floods. Fish were sampled in specific habitat patches using prepositioned areal electrofishing devices at two high-flow stages, near bankfull flow and one-half bankfull flow, during a flood. Fish were also sampled at baseflow immediately following the flood to compare changes in habitat use related to flow stage. During the
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Gómez-Pazo, Alejandro, Augusto Pérez-Alberti, Pedro Fraga-Santiago, Martin Souto-Souto, and X. L. Otero. "Contribution of GIS and Geochemical Proxies to Improving Habitat Identification and Delimitation for the Natura 2000 Network: The Case of Coastal Lagoons in Galicia (NW Iberian Peninsula)." Applied Sciences 10, no. 24 (2020): 9068. http://dx.doi.org/10.3390/app10249068.

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The Natura 2000 network is an ambitious European project aimed at nature conservation. Nevertheless, the identification and delimitation of habitats is a complex task and simultaneously essential for correct ecosystem management. In this study we compared the current habitat delimitation and designation and the results produced by Geographic Information Systems (GIS) and geochemical proxies for the categorization of four coastal lakes in Galicia (NW Iberian Peninsula). The findings reveal important errors in the delimitation/designation. The first error is the designation of all four lakes as
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Brind'Amour, Anik, and Daniel Boisclair. "Effect of the spatial arrangement of habitat patches on the development of fish habitat models in the littoral zone of a Canadian Shield lake." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 4 (2006): 737–53. http://dx.doi.org/10.1139/f05-249.

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We developed fish habitat models in a Canadian Shield lake using (i) a sampling-site approach based on analytical units having a surface area equal to that of sampling sites (S ~ 200 m2), (ii) a constant-multiple approach in which the analytical units constituted grouping of adjacent sampling sites in units of increasing sizes (e.g., 2S or 3S), and (iii) a habitat-patch approach in which only contiguous sampling sites with similar environmental characteristics were merged. The best models explaining within-lake variations in fish density, biomass, and community structure on the littoral zone w
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Kocik, John F., and C. Paola Ferreri. "Juvenile production variation in salmonids: population dynamics, habitat, and the role of spatial relationships." Canadian Journal of Fisheries and Aquatic Sciences 55, S1 (1998): 191–200. http://dx.doi.org/10.1139/d98-015.

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Anadromous Atlantic salmon (Salmo salar) exhibit a complex life history that requires the use of habitats that span several different temporal and spatial scales. While fisheries scientists have investigated the various elements of habitat and how they affect Atlantic salmon growth and survival, these studies typically focus on requisite requirements for a single life history stage. Current advances in our understanding of salmonid populations in lotic systems indicates that ignoring the spatial positioning of different habitats and dispersal capabilities of fish between them may affect estima
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Koroleva, Natalia. "Phytosociological evaluation of terrestrial habitat types in Pyramiden area (Svalbard, Norway)." Czech Polar Reports 4, no. 2 (2014): 193–211. http://dx.doi.org/10.5817/cpr2014-2-20.

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Natural habitats in the area of Pyramiden town (Svalbard, Norway) were assessed as a part of landscape planning for purposes of tourism development. Habitat types evalu-ation was done by using phytosociological units and assessed by IUCN categories. Altogether, 15 main habitat types were united in following groups: 1. Arctic tundra, 2. Barrens, screes, young alluvia areas and glaciers, 4. Wetlands and marshes, 5. Meadows and grasslands, 6. Anthropogenic open plant communities.
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Woinarski, JCZ, and RW Braithwaite. "The distributionof terrestrial vertebrates and plants in relation to vegetation and habitat-mapping schemes in Stage III of Kakadu National Park." Wildlife Research 20, no. 3 (1993): 355. http://dx.doi.org/10.1071/wr9930355.

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The abundance of birds, reptiles and frogs was recorded at 370 quadrats and the abundance of mammals and the basal area of woody plants was recorded at these and a further 10 quadrats in Stage I11 of Kakadu National Park. Patterns in the distribution of these species were related to two environmental mapping schemes. The more specific and localised of these was a 1 : 100 000 habitat map for Kakadu National Park, established by Schodde et al. (1987), based on environmental attributes considered to be significant for the distribution of wildlife species: floristics, vegetation structure, substra
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Angermeier, Paul L., and Roy A. Smogor. "Estimating number of species and relative abundances in stream-fish communities: effects of sampling effort and discontinuous spatial distributions." Canadian Journal of Fisheries and Aquatic Sciences 52, no. 5 (1995): 936–49. http://dx.doi.org/10.1139/f95-093.

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We sampled fishes and measured microhabitat in series of contiguous habitat units (riffles, runs, pools) in three Virginia streams. We used Monte Carlo simulations to construct hypothetical series of habitat units, then examined how number of species, similarity in relative abundances, and number of microhabitats accumulated with increasing number of habitat units (i.e., sampling effort). Proportions of all species and microhabitats represented were relatively low and variable at low sampling effort, but increased asymptotically and became less variable with greater sampling effort. To facilit
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Hankin, David G., and Gordon H. Reeves. "Estimating Total Fish Abundance and Total Habitat Area in Small Streams Based on Visual Estimation Methods." Canadian Journal of Fisheries and Aquatic Sciences 45, no. 5 (1988): 834–44. http://dx.doi.org/10.1139/f88-101.

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We present sampling designs for estimating total areas of habitat types and total fish numbers in small streams. Designs are applied independently within strata constructed on the basis of habitat unit type and stream reach. Visual methods for estimating habitat areas and fish numbers are used to increase sample sizes and thereby reduce errors of estimation. Visual estimates of area are made for all habitat units, and visual estimates of fish numbers are made for systematic samples of units within given habitat types. Use of systematic sampling circumvents the requirement for a preexisting map
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Dissertations / Theses on the topic "Habitat units"

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Stephens, Jaime L. "A comparison of bird abundance and nesting in harvest units, habitat islands, and mature coniferous forests in southwestern Oregon /." View full-text version online through Southern Oregon Digital Archives, 2005. http://soda.sou.edu/awdata/050801c1.pdf.

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Thesis (M.S.)--Southern Oregon University, 2005.<br>"A thesis submitted to ... Southern Oregon University in partial fulfillment of the requirements for the degree of Master of Science ..." Includes bibliographical references (leaves 70-73). Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search Bioregion Collection.
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Wattrus, Jane M. (Jane Marie). "Habitat Evaluation Procedures at Ray Roberts Lake: an Analysis of the Relationship with Ecological Indicators and a Study of Observer and Temporal Variability." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc501233/.

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Habitat Evaluation Procedure data gathered at Ray Roberts Lake in 1989 and 1990 were analysed for temporal variability, observer variability and relationships between Habitat Units (HUs) and species density/diversity. observer variability within a group was analysed by cluster analysis and bootstrapping. Five out of 36 sites showed significant differences in Habitat Suitability Index (HSI) values within the group. A nonparametric Mann-Whitney test was used to analyze temporal variability. One of 6 sites showed a significant difference in HSI values between years. Using Spearman's Rank Correlat
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Peterson, James T. "The evaluation of a hydraulic unit-based habitat system /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9821340.

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Oliveira, Francisco Carlos Almeida do Nascimento e. "Os novos lugares do habitar e as formas de apropriação contemporâneas." Master's thesis, Instituições portuguesas -- UTL-Universidade Técnica de Lisboa -- -Faculdade de Arquitectura, 2000. http://dited.bn.pt:80/29405.

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Frescino, Tracey S. "Development and Validation of Forest Habitat Models in the Uinta Mountains, Utah." DigitalCommons@USU, 1998. https://digitalcommons.usu.edu/etd/6461.

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A significant question currently facing environmental managers is how to accurately and efficiently quantify forest diversity and resources. Numerous studies have demonstrated the use of modern spatial analytical tools , such as geographical information systems (GIS), remote sensing devices, and statistical models for predicting the distribution of dominant vegetation cover types. This study examines the ability of generalized additive models (GAMs) to delineate structural diversity in forested ecosystems (specifically the Uinta Mountain Range in Utah) using GIS tools and satellite spectral da
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Helled, Alon. "Engraving Identity : the Israeli National Habitus through the Historiographical Field." Thesis, Paris, EHESS, 2019. http://www.theses.fr/2019EHES0171.

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Cette thèse approche par une lecture identitaire l'historiographie nationale en Israël et la manière dont le développement de la discipline reflète les changements sociaux, politiques et culturels. Cette étude poursuit l'autonomisation du champ historiographique à partir de sa sociogenèse pendant la période pré-étatique jusqu'à nos jours. La thèse reconstruit les phases, les acteurs et les structures de ce champ académique en relation avec la construction de l'identité nationale israélienne, notamment juive et sioniste. De ce fait, l'enquête examine les parcours de vie des historiens et le rôl
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Shetler, Pamela A. "Keeping our habitat healthy: A thematic unit for teaching environmental awareness for grades 3-5." CSUSB ScholarWorks, 1995. https://scholarworks.lib.csusb.edu/etd-project/1090.

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There are many curriculum guides that address environmental education. Classroom teachers do not have the time to obtain and search all of these guides. This curriculum was developed by searching numerous manuals for appropriate lessons, developing a cohesive unit, and field testing the lessons on students in two classrooms. The project, as a whole, offers teachers a thematic, multi-disciplinary, hands-on, literature based method of developing students' appreciation and understanding of the world in which they live.
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Teles, Sílvia. "Habitar a paisagem alentejana: a particularidade do monte." Master's thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/12238.

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A presente dissertação encontra-se fundamentada no estudo da propriedade rural de herdade latifundiária na região do Alentejo, bem como na análise e identificação dos elementos arquitectónicos habitacionais, produtivos e rede viária, que faziam parte destes territórios. O caso de estudo, Monte Branco da Serra, localiza-se em Moura, na freguesia de Sobral da Adiça. Parte-se de uma análise detalhada dos principais elementos que compõem esta paisagem, numa aproximação de contexto monográfico, relacionado com o estudo já abordado sobre este monte no importante Inquérito à Arquitectura Popular Port
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McChesney, Holly M. "A Geographic Analysis of Black Bear (Ursus Americanus) Habitat in the Marietta Unit of the Wayne National Forest." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392910425.

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Larrière-Cabiran, Marylène. "Organisation et utilisation de l'espace dans une unité d'occupation magdalénienne à Étiolles (Essonne, France) : l'habitation A17." Paris 1, 1993. http://www.theses.fr/1993PA010646.

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À travers l'analyse des relations spatiales et diachroniques qu'entretiennent les vestiges essentiellement lithiques (plus de vingt-trois mille produits) abandonnés sur un des niveaux les plus récents du site, il a été possible de tirer des informations de caractère palethnographique concernant les activités quotidiennes des habitants de cette unité et la façon dont ces derniers ont structuré et utilisé leur espace tout au long de leur installation. Grace aux liaisons établies à partir des remontages de pierres et de silex tailles, l'auteur est parvenue à identifier et expliciter le mode de fo
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Books on the topic "Habitat units"

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Frezza, T. Analysis of the relationship between fish habitat classifications and topological lake units. Central and Arctic Region, Fisheries and Oceans Canada, 2002.

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Bigley, Richard. Implementation procedures for the habitat conservation plan riparian forest restoration strategy for westside planning units excluding the Olympic Experimental State Forest. Washington State Department of Natural Resources, 2006.

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Office, General Accounting. Land management agencies: Major activities at selected units are not common across agencies : report to Congressional requesters. The Office, 1997.

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Dey, Paul D. Videographic habitat analysis on the Spence-Moriarity Wildlife Habitat Management Unit. Wyoming Game and Fish Dept., Fish Division, 1996.

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Andrews, William A. Habitats and communities: Unit plan and student activitiy sheets. Ontario Society for Environmental Education (OSEE), 2002.

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Andrews, William A. Habitats and communities: Unit plan and student activity sheets. Andrews Education Services, 2002.

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Hepworth, Dale K. Lower Sevier and Lower Beaver drainages management plan, hydrologic units 16030005 and 16030008. Utah Dept. of Natural Resources, Division of Wildlife Resources, 2007.

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Tiberia, Bina. Life in an ecosystem: Plants and habitat : an integrated unit for grade 3/4. s.n.], 2001.

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Schaugaard, Craig J. Curlew Valley drainage management plan hydrologic unit 16020309. Utah Division of Wildlife Resources, 2006.

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Tolentino, Scott A. Central Bear drainage management plan hydrologic unit 16010102. Utah Dept. of Natural Resources, Division of Wildlife Resources, 2007.

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Book chapters on the topic "Habitat units"

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Shields, Vonnie D. C., Lawrence F. Gall, and Michael K. Rust. "Unit of Habitat Sampling." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_2300.

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Fu, Bolin, Yeqiao Wang, and Ying Li. "Basic Evaluation Units and Physical Structural Integrality in Riparian Zone Evaluation." In Wetlands and Habitats. CRC Press, 2020. http://dx.doi.org/10.1201/9780429445507-13.

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Omar, Héctor, and Pensado Díaz. "Minimal Unit of Terraforming an Alternative for Remodelling Mars." In Cellular Origin and Life in Extreme Habitats and Astrobiology. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-1003-0_49.

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"Units." In Tall Buildings and Urban Habitat. Taylor & Francis, 2001. http://dx.doi.org/10.4324/noe0415232418.bmatt4.

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"Benthic Habitats and the Effects of Fishing." In Benthic Habitats and the Effects of Fishing, edited by Page C. Valentine, Brian J. Todd, and Vladimir E. Kostylev. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569605.ch18.

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&lt;strong&gt;&lt;em&gt;Abstract. &lt;/em&gt;&lt;/strong&gt;Habitats are defined as spatially recognizable areas where the physical, chemical, and biological environment is distinctly different from surrounding environments. A habitat can be delimited as narrowly or as broadly as the data and purpose permit, and this flexibility of scale influences the development of habitat classification schemes. Recent habitat classifications focus on a wide range of habitats that occur in European, American, and worldwide seafloor environments. The proposed classification of marine sublittoral habitats is based on recent studies in the American and Canadian parts of northeastern North America using multibeam and side-scan sonar surveys, video and photographic transects, and sediment and biological sampling. A guiding principle in this approach to habitat classification is that it will be useful to scientists and managers of fisheries and the environment. The goal is to develop a practical method to characterize the marine sublittoral (chiefly the subtidal continental shelf and shelf basin) habitats in terms of (1) their topographical, geological, biological, and oceanographical attributes and (2) the natural and anthropogenic processes that affect the habitats. The classification recognizes eight seabed themes (informal units) as the major subject elements of the classification. They are seabed topography, dynamics, texture, grain size, roughness, fauna and flora, habitat association and usage, and habitat recovery from disturbance. Themes include one or many classes of habitat characteristics related to seabed features, fauna and flora, and processes that we view as fundamental for recognizing and analyzing habitats. Within the classes, a sequence of subclasses, categories, and attributes addresses habitat characteristics with increasing detail. Much of the classification is broadly applicable worldwide (excluding some lowlatitude environments), but faunal and floral examples are representative of the northeastern North America region. In naming habitats, the classification emphasizes seabed substrate dynamics, substrate type, and seabed physical and biological complexity. The classification can accommodate new classes, subclasses, categories, and attributes, and it can easily be modified or expanded to address habitats of other regions. It serves as a template for a database that will provide a basis for organizing and comparing habitat information and for recognizing regional habitat types.
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"Managing Centrarchid Fisheries in Rivers and Streams." In Managing Centrarchid Fisheries in Rivers and Streams, edited by Shannon K. Brewer, Brandon Brown, Thomas A. Worthington, et al. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874523.ch2.

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&lt;em&gt;Abstract.&lt;/em&gt;—Unique genetic lineages of &lt;em&gt; Micropterus &lt;/em&gt;species are increasingly recognized; however, little effort has been devoted to identifying their ecological relationships despite recognition of their conservation value by management agencies. Our study objectives were to determine young-of-year, first-summer survival, and examine overall channel-unit habitat use by the Neosho subspecies of Smallmouth Bass &lt;em&gt; Micropterus dolomieu velox &lt;/em&gt;from two Ozark streams (Spring and Buffalo creeks). We completed snorkel surveys approximately every 2 weeks from June–September 2013. As anticipated, young-of-year mortality was high during the first 2 weeks of the sampling period (85% in Buffalo Creek and 99% in Spring Creek). Mortality stabilized by the end of July in both streams and was similar over subsequent 2-week periods (95% CI: 0.13%–2.38% and 0.72%–3.48%, in Spring Creek and Buffalo Creek, respectively). In Spring Creek, backwater habitats were unavailable, and young-of-year fish used both pool and run habitats throughout the study duration. However, we observed different habitat-use patterns in Buffalo Creek: young-of-year fish used pools and backwaters throughout the season, use of run habitats increased by late July, and increased use of backwater habitats followed an increase in late summer discharge. In general, there was substantial habitat use variability both within and between streams. Considering both stream reaches combined, young-of-year fish densities in riffle habitat were statistically lower than other channel units. We show that young-of-year Neosho Smallmouth Bass mortality is high during the first few weeks following swim up, and that backwater habitats may be important to early life stages under certain environmental conditions.
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"Fish Habitat: Essential Fish Habitat and Rehabilitation." In Fish Habitat: Essential Fish Habitat and Rehabilitation, edited by Philip Roni, Laurie A. Weitkamp, and Joe Scordino. American Fisheries Society, 1999. http://dx.doi.org/10.47886/9781888569124.ch9.

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&lt;em&gt;Abstract.—&lt;/em&gt; Freshwater and marine essential fish habitat (EFH) for chinook &lt;em&gt;Oncorhynchus tshawytscha&lt;/em&gt; , coho &lt;em&gt;O. kisutch&lt;/em&gt; , pink &lt;em&gt;O. gorbuscha&lt;/em&gt; , and sockeye &lt;em&gt;O. nerka &lt;/em&gt; salmon within Washington, Oregon, California, and Idaho was described and identified using the available literature and databases on salmon distribution and life history. The diversity of freshwater habitats utilized by individual species of salmon coupled with the limitations of existing distribution maps precluded identification of specific stream reaches, wetlands, and other water bodies as EFH for Pacific salmon. A more holistic watershed approach consistent with the ecosystem method recommended by the revised Magnuson-Stevens Fishery Conservation and Management Act was necessary. Therefore, Pacific salmon freshwater EFH was delineated and described as all existing water bodies currently and historically utilized by Pacific salmon within selected watersheds defined by U.S. Geological Survey hydrologic units. Areas above some long-standing artificial barriers to juvenile and adult salmon migration were excluded from designation as Pacific salmon EFH. Delineation of marine EFH was also problematic because of the paucity of scientific studies on offshore Pacific salmon habitat use and distribution. However, available scientific data augmented by information from commercial fisheries indicate that juvenile salmon are found in high concentrations in the nearshore areas of the continental shelf off the Washington, Oregon, and California coasts from late spring through fall. Therefore, Pacific salmon marine EFH was identified as all waters within 60 km of the Washington, Oregon, and California coasts north of Point Conception, California. This initial effort to identify Pacific salmon EFH emphasized the need for accurate, fine-scale geographic information systems data on freshwater and marine salmon distribution and habitat quality and the need for compilation of uniform data sets. Future efforts should focus on developing accurate seasonal salmon distribution data at a 1:24,000 scale to aid in more precise and accurate delineation of Pacific salmon EFH. Furthermore, detailed information on winter distribution of Pacific salmon would be useful in delineating marine EFH.
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"Fish Habitat: Essential Fish Habitat and Rehabilitation." In Fish Habitat: Essential Fish Habitat and Rehabilitation, edited by Philip Roni, Laurie A. Weitkamp, and Joe Scordino. American Fisheries Society, 1999. http://dx.doi.org/10.47886/9781888569124.ch9.

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&lt;em&gt;Abstract.—&lt;/em&gt; Freshwater and marine essential fish habitat (EFH) for chinook &lt;em&gt;Oncorhynchus tshawytscha&lt;/em&gt; , coho &lt;em&gt;O. kisutch&lt;/em&gt; , pink &lt;em&gt;O. gorbuscha&lt;/em&gt; , and sockeye &lt;em&gt;O. nerka &lt;/em&gt; salmon within Washington, Oregon, California, and Idaho was described and identified using the available literature and databases on salmon distribution and life history. The diversity of freshwater habitats utilized by individual species of salmon coupled with the limitations of existing distribution maps precluded identification of specific stream reaches, wetlands, and other water bodies as EFH for Pacific salmon. A more holistic watershed approach consistent with the ecosystem method recommended by the revised Magnuson-Stevens Fishery Conservation and Management Act was necessary. Therefore, Pacific salmon freshwater EFH was delineated and described as all existing water bodies currently and historically utilized by Pacific salmon within selected watersheds defined by U.S. Geological Survey hydrologic units. Areas above some long-standing artificial barriers to juvenile and adult salmon migration were excluded from designation as Pacific salmon EFH. Delineation of marine EFH was also problematic because of the paucity of scientific studies on offshore Pacific salmon habitat use and distribution. However, available scientific data augmented by information from commercial fisheries indicate that juvenile salmon are found in high concentrations in the nearshore areas of the continental shelf off the Washington, Oregon, and California coasts from late spring through fall. Therefore, Pacific salmon marine EFH was identified as all waters within 60 km of the Washington, Oregon, and California coasts north of Point Conception, California. This initial effort to identify Pacific salmon EFH emphasized the need for accurate, fine-scale geographic information systems data on freshwater and marine salmon distribution and habitat quality and the need for compilation of uniform data sets. Future efforts should focus on developing accurate seasonal salmon distribution data at a 1:24,000 scale to aid in more precise and accurate delineation of Pacific salmon EFH. Furthermore, detailed information on winter distribution of Pacific salmon would be useful in delineating marine EFH.
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"Pacific Salmon Environmental and Life History Models: Advancing Science for Sustainable Salmon in the Future." In Pacific Salmon Environmental and Life History Models: Advancing Science for Sustainable Salmon in the Future, edited by Steven P. Cramer and Nicklaus K. Ackerman. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874097.ch13.

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&lt;em&gt;Abstract.&lt;/em&gt;—Stream carrying capacity for anadromous salmonids that rear to the smolting stage in freshwater can be predicted from a sequence of cause-response functions that describe fish preferences for macro-habitat features. The channel unit (e.g., pool, glide, riffle) is a useful stratum for quantifying rearing capacity for salmonids, and is a hydrologically meaningful unit for predicting the response of stream morphology to watershed processes. Thus, channel units are the natural link between habitat-forming processes and habitat requirements of salmonids. Maximum densities of juvenile salmonids that can be supported in a channel unit are related to availability of preferred habitat features including velocity, depth, cover, and substrate. Within channel unit types, maximum densities of salmonid parr will shift predictably as availability of cover from wood and boulders increases. Within stream reaches, additional variation in maximum rearing densities can be accounted for by light penetration and nutrient load. As salmonids grow, their habitat preferences change and the preferred habitat associated with their increasing size becomes less and less available. Further, territory size of salmonids increases exponentially with fish length, such that the demand for territory to support surviving members of a cohort increases at least through their first year of life. Changing habitat preferences and space demands, juxtaposed against shrinking habitat availability with the onset of summer low flows often results in a bottleneck to rearing capacity for age &gt;1 salmonids in wadable streams. Habitat measurements in Oregon streams indicate that depths preferred by steelhead (anadromous rainbow trout) &lt;em&gt;Oncorhynchus mykiss &lt;/em&gt;become scarce as parr exceed 15 cm in length, which coincides with the approximate threshold length for steelhead smolts. We present a generalized framework, called the Unit Characteristic Method, for accumulating effects of these habitat factors at the channel unit and reach-level scales to estimate carrying capacity for rearing salmonids in a basin. Our subsequent chapter in this book presents a demonstration of how this method can be applied to predicting salmonid production in streams.
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"Landscape Influences on Stream Habitats and Biological Assemblages." In Landscape Influences on Stream Habitats and Biological Assemblages, edited by Paul W. Seelbach, Michael J. Wiley, Matthew E. Baker, and Kevin E. Wehrly. American Fisheries Society, 2006. http://dx.doi.org/10.47886/9781888569766.ch2.

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&lt;em&gt;Abstract.&lt;/em&gt;—–Describing the unique spatial context of any river unit requires integrating catchment and local valley characters. We believe that adding hydrologic regime and key fish species to standard geomorphic variables improves the delineation and characterization of river valley segments as ecological units. Valley segments constrain habitat units, and several segments together can encompass home ranges of mobile fishes. Segments can be accurately defined and characterized using maps and then analyzed across large geographic areas, making them practical for statewide planning and management. By incorporating prior knowledge from modeling landscape–river relationships, we interpreted multiple landscape maps to delineate and assign initial attributes to river valley segments. The resulting classification system provides a new, ecologically informed view of Michigan’s rivers that has helped managers better perceive and consider environmental patterns that constrain habitat and biological variation within and among individual rivers. It is being used throughout Michigan and regionally as a framework for fisheries and water management, conservation planning, and education.
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Conference papers on the topic "Habitat units"

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Maldonado, Jacqueline, Mark Lee, Robert Morrow, Steve Guetschow, Ross Remiker, and Javier Morell. "Science Evaluation Units for the Plant Research Unit and the Advanced Animal Habitat." In International Conference On Environmental Systems. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-2783.

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Bennun, Leon, Edward Pollard, Malcolm Starkey, and Helen Temple. "Critical Habitat Determination for Linear Infrastructure: Approaches to Delineating Discrete Management Units under IFC Performance Standard 6." In SPE International Conference and Exhibition on Health, Safety, Security, Environment, and Social Responsibility. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/179466-ms.

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Finkl, Charles W., Roger Charlier, and Erin Hague. "Some Environmental Considerations of Electrical Power Generation From Ocean Currents in the Straits of Florida." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76252.

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Ocean currents contain a remarkable amount of kinetic energy and have potential worldwide capability. Initial tests to harness current power focus on the Straits of Florida where the Florida Current has a total flow capacity of about 30 × 106 m3 s−1. Generation of clean electricity from ocean currents off southeast Florida is based on a power extractor comprised by open-center turbine technology. This innovative turbine provides safe passage for fish and other aquatic species. The water-column array of energy production units (EPUs) will have a 350 km2 footprint, based on a 600 m (10 rotor dia
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Howe, Scott A., Kriss J. Kennedy, Tracy R. Gill, Russell W. Smith, and Patrick George. "NASA Habitat Demonstration Unit (HDU) Deep Space Habitat Analog." In AIAA SPACE 2013 Conference and Exposition. American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-5436.

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Kennedy, Kriss. "NASA Habitat Demonstration Unit Project - Deep Space Habitat Overview." In 41st International Conference on Environmental Systems. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-5020.

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Gill, Tracy, Jerad Merbitz, Kriss Kennedy, et al. "Integration Process for the Habitat Demonstration Unit Deep Space Habitat." In AIAA SPACE 2011 Conference & Exposition. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-7108.

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BALEŽENTIENĖ, Ligita. "ALLELOPATHIC ACTIVITY OF INVASIVE SPECIES SOLIDAGO CANADENSIS L." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.037.

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Solidago canadensis L. (Asteraceae) spread throughout the world and also is enlisted in the National list of invasive species (2012). Here the allelopathic activity of the species was assessed in terms of further understanding of their distributions over the range of native spread. The invasion success of S. Canadensis was tried to base on the estimation of the total phenolics content (TPC) in the plant aqueous leachates at different growth stages. Allelopathic impacts (total phenolics content, total concentration and dynamic, conventional coumarine units, CCU) of S. canadensis were examined d
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Kennedy, K. J., T. R. Gill, T. O. Tri, and A. S. Howe. "The Habitat Demonstration Unit Project Overview." In 12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; and Fourth NASA/ARO/ASCE Workshop on Granular Materials in Lunar and Martian Exploration. American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41096(366)131.

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Gill, T. R., K. J. Kennedy, T. O. Tri, and A. S. Howe. "The Habitat Demonstration Unit System Integration." In 12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; and Fourth NASA/ARO/ASCE Workshop on Granular Materials in Lunar and Martian Exploration. American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41096(366)133.

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Gill, Tracy, Jerad Merbitz, Kriss Kennedy, Terry Tri, and Alan Howe. "Integration Process for the Habitat Demonstration Unit." In AIAA SPACE 2010 Conference & Exposition. American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-8787.

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Reports on the topic "Habitat units"

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Cooper, Christopher, Jacob McDonald, and Eric Starkey. Wadeable stream habitat monitoring at Congaree National Park: 2018 baseline report. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2286621.

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The Southeast Coast Network (SECN) Wadeable Stream Habitat Monitoring Protocol collects data to give park resource managers insight into the status of and trends in stream and near-channel habitat conditions (McDonald et al. 2018a). Wadeable stream monitoring is currently implemented at the five SECN inland parks with wadeable streams. These parks include Horseshoe Bend National Military Park (HOBE), Kennesaw Mountain National Battlefield Park (KEMO), Ocmulgee Mounds National Historical Park (OCMU), Chattahoochee River National Recreation Area (CHAT), and Congaree National Park (CONG). Streams
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Bryant, M. D., B. E. Wright, and B. J. Davies. Application of a hierarchical habitat unit classification system: stream habitat and salmonid distribution in Ward Creek, southeast Alaska. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1992. http://dx.doi.org/10.2737/pnw-rn-508.

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Habitat Evaluation Procedures (HEP) Report; Kaniksu Unit Pend Oreille National Wildlife Refuge. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/947097.

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