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Skagen, Susan K., Jeffrey F. Kelly, Charles van Riper, Richard L. Hutto, Deborah M. Finch, David J. Krueper i Cynthia P. Melcher. "Geography of Spring Landbird Migration Through Riparian Habitats in Southwestern North America". Condor 107, nr 2 (1.05.2005): 212–27. http://dx.doi.org/10.1093/condor/107.2.212.
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Abstract Migration stopover resources, particularly riparian habitats, are critically important to landbirds migrating across the arid southwestern region of North America. To explore the effects of species biogeography and habitat affinity on spring migration patterns, we synthesized existing bird abundance and capture data collected in riparian habitats of the borderlands region of the U.S. and Mexico. We determined the importance of geographic factors (longitude and latitude) in explaining variation in abundances and capture rates of 32 long-distance and three short-distance migrant species. Abundances and capture rates of 13 and 11 species, respectively, increased with increasing longitude, and four species' abundance and capture rates decreased with increasing longitude. Riparian associates, but not nonriparian species, were more abundant in western sites. Their abundance patterns were only weakly influenced by species biogeography. In contrast, biogeography did influence abundance patterns of nonriparian birds, suggesting that they choose the shortest, most direct route between wintering and breeding areas. We hypothesize that riparian obligate birds may, to some degree, adjust their migration routes to maximize time spent in high-quality riparian zones, but they are able to find suitable habitat opportunistically when crossing more hostile landscapes. In contrast, nonriparian birds adhere more closely to a hierarchical model in which the migratory route is determined by biogeographic constraints. Conservation of riparian habitats is necessary to meet future habitat stopover requirements of many western Neotropical migrant birds. We advocate a coordinated research effort to further elucidate patterns of distribution and habitat use so that conservation activities can be focused effectively. Geografía de la Migración de Primavera de Aves Terrestres a Través de Hábitats Riparios en el Sudoeste de Norteamérica Resumen. Los recursos que sirven como paradas migratorias, especialmente los hábitats riparios, son críticamente importantes para las aves migratorias terrestres a través de la región árida del sudoeste de Norteamérica. Para explorar los efectos de la biogeografía de las especies y la afinidad de hábitat sobre los patrones de migración de primavera, sintetizamos los datos existentes de abundancia y capturas de aves colectados en hábitats riparios en la zona fronteriza entre Estados Unidos y México. Determinamos la importancia de factores geográficos (latitud y longitud) en explicar la variación en las abundancias y en las tasas de captura de 32 especies migratorias de larga distancia y 3 de corta distancia. Las abundancias y tasas de captura de 13 y 11 especies, respectivamente, aumentaron con el aumento de la longitud, y cuatro especies mostraron una disminución con el aumento de la longitud. Las aves asociadas a los ambientes riparios fueron más abundantes en los sitios del oeste que las especies no riparias, y su abundancia sólo se vio levemente influenciada por la biogeografía de las especies. De modo contrastante, la biogeografía sí influenció los patrones de abundancia de las especies de aves no riparias, lo que sugiere que éstas escogieron la ruta más corta y directa entre las áreas de invernada y de reproducción. Proponemos la hipótesis de que las aves de hábitat ripario obligatorias pueden, hasta cierto grado, ajustar sus rutas migratorias para maximizar el tiempo en zonas riparias de alta calidad, pero también son capaces de encontrar hábitats adecuados de manera oportunista al cruzar paisajes más hostiles. De modo contrastante, las aves no riparias se adhieren más cercanamente a un modelo jerárquico en el cual la ruta migratoria es determinada por restricciones biogeográficas. La conservación de los hábitats riparios es necesaria para cumplir los requerimientos futuros de las paradas durante la migración de muchas aves migratorias Neotropicales del oeste. Abogamos por un esfuerzo de investigación coordinado para elucidar los patrones de distribución y de uso de hábitat de manera que las actividades para la conservación puedan ser enfocadas de manera eficiente.
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Tiegs, Scott. "Ecology and Management of Riparian Ecosystems". Ecology 87, nr 2 (luty 2006): 529. http://dx.doi.org/10.1890/0012-9658(2006)87[529:eamore]2.0.co;2.
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Larivière, Serge. "Behaviour and Ecology of Riparian Mammals". Journal of Mammalogy 81, nr 1 (luty 2000): 280–82. http://dx.doi.org/10.1644/1545-1542(2000)081<0280:r>2.0.co;2.
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López-Almansa, J. C. "Review. Reproductive ecology of riparian elms". Forest Systems 13, nr 1 (1.04.2004): 17–27. http://dx.doi.org/10.5424/809.
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This paper review our current knowledge of the reproductive ecology in the genus Ulmus, for which few investigations has been conducted and relatively little information is available. In the genus Ulmus, as in other riparian or sub-riparian genera, trees reproduce either vegetatively (by sprouting) or sexually. These mechanisms work differently. Sprouting permits colonization of open areas close to the trees, being especially frequent from large trees following death of their stem. Sprouting from the surviving roots of trees affected with Dutch Elm Disease is abundant in Spanish Ulmus minor. Sexual reproduction is infrequent, and requires some special conditions to be successful. It probably occurs coincidently with massive river floods that remove riparian vegetation and deposit a fertile muddy bed suitable for seed germination. Many Ulmus minor genotypes do not produce seed owing to seed abortion and other mechanisms. As a result, two gender-classes, male and cosexual, are presumably present in Spain, although this requires confirmation. A hypothesis trying to explain female sterility as the result of a trade-off between sexual and vegetative reproduction has been recently proposed, but it requires to be confirmed. Further research is also necessary for a better knowledge of flooding effect on elm regeneration and for evaluating other aspects of its reproductive ecology.
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Hill, Jacob E., Madison L. Miller, James L. Helton, Richard B. Chipman, Amy T. Gilbert, James C. Beasley, Guha Dharmarajan i Olin E. Rhodes. "Raccoon spatial ecology in the rural southeastern United States". PLOS ONE 18, nr 11 (9.11.2023): e0293133. http://dx.doi.org/10.1371/journal.pone.0293133.
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The movement ecology of raccoons varies widely across habitats with important implications for the management of zoonotic diseases such as rabies. However, the spatial ecology of raccoons remains poorly understood in many regions of the United States, particularly in the southeast. To better understand the spatial ecology of raccoons in the southeastern US, we investigated the role of sex, season, and habitat on monthly raccoon home range and core area sizes in three common rural habitats (bottomland hardwood, upland pine, and riparian forest) in South Carolina, USA. From 2018–2022, we obtained 264 monthly home ranges from 46 raccoons. Mean monthly 95% utilization distribution (UD) sizes ranged from 1.05 ± 0.48 km2 (breeding bottomland females) to 5.69 ± 3.37 km2 (fall riparian males) and mean monthly 60% UD sizes ranged from 0.25 ± 0.15 km2 (breeding bottomland females) to 1.59 ± 1.02 km2 (summer riparian males). Males maintained home range and core areas ~2–5 times larger than females in upland pine and riparian habitat throughout the year, whereas those of bottomland males were only larger than females during the breeding season. Home ranges and core areas of females did not vary across habitats, whereas male raccoons had home ranges and core areas ~2–3 times larger in upland pine and riparian compared to bottomland hardwood throughout much of the year. The home ranges of males in upland pine and riparian are among the largest recorded for raccoons in the United States. Such large and variable home ranges likely contribute to elevated risk of zoonotic disease spread by males in these habitats. These results can be used to inform disease mitigation strategies in the southeastern United States.
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Pinay, Gilles, i G. P. Malanson. "Riparian Landscapes." Journal of Applied Ecology 31, nr 3 (sierpień 1994): 594. http://dx.doi.org/10.2307/2404455.
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Rodewald, Paul G., i Stephen N. Matthews. "Landbird use of Riparian and Upland Forest Stopover Habitats in an Urban Landscape". Condor 107, nr 2 (1.05.2005): 259–68. http://dx.doi.org/10.1093/condor/107.2.259.
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Abstract Stopover habitat relationships of landbirds are not well known and this constitutes a shortcoming in conservation plans for migratory birds. We compared migrant use of mature upland and riparian forests during spring in an urbanizing landscape within central Ohio. We surveyed stopover migrants along 250-m transects, and quantified both local- and landscape-level habitat characteristics (percent urban and forest land). During spring stopover, migrant abundance was 86% and 118% higher in upland forests for Nearctic-Neotropical transient (long-distance migrants) and temperate transients (short-distance migrants), respectively. Of 27 transient species, 22 species differed in their use of riparian and upland forests, and 20 of those were most abundant in upland forest (e.g., Blue-headed Vireo [Vireo solitarius], Least Flycatcher [Empidonax minimus], Swainson's Thrush [Catharus ustulatus], Nashville Warbler [Vermivora ruficapilla], Magnolia Warbler [Dendroica magnolia], Bay-breasted Warbler [D. castanea], and Ovenbird [Seiurus aurocapillus]). Species richness was 58% and 75% higher in upland forests relative to riparian forests for Neotropical transient and temperate transient groups, respectively. Percent urbanization within 1 km was unrelated to abundance of Neotropical transients and temperate transients. Abundance of Neotropical transients and temperate transients was unrelated to percent forest cover within 1 km. Mature upland and riparian forests differed in that riparian sites had lower percentage of shrub cover, higher percentage of canopy cover, and different species composition of trees. Abundance of Neotropical transients was positively associated with mean canopy height; temperate transients were positively associated with mean number of trees >38 cm DBH and mean percentage of shrub cover. Our data indicate that mature upland forests were more heavily used by migrating landbirds than riparian forests within an urbanizing Midwestern landscape and may represent valuable habitats for the conservation of migratory landbirds within highly fragmented landscapes. Uso de Bosques Riparios y de Llanuras por Aves Terrestres como Hábitats de Paradas Migratorias en un Paisaje Urbano Resumen. Las relaciones de los hábitats que sirven como paradas migratorias para las aves terrestres no están bien conocidas, y esto constituye una deficiencia en los planes de conservación de las aves migratorias. Comparamos el uso de bosques maduros de llanuras y de bosques riparios por parte de aves migratorias durante la primavera en un paisaje que está siendo urbanizado en Ohio central. Registramos aves migratorias en las paradas de migración a lo largo de transectos de 250 m y cuantificamos las características del hábitat tanto a nivel local como a nivel del paisaje (porcentaje de cobertura urbana y de bosque). Durante la parada migratoria de primavera, la abundancia de las aves migratorias en bosques de llanura fue un 86% mayor para las aves transitorias del Neártico-Neotrópico (aves migratorias de larga distancia) y un 118% mayor para las aves transitorias templadas (aves migratorias de corta distancia). De 27 especies transitorias, 22 especies se diferenciaron en su uso de bosque ripario y de llanura, y 20 de éstas fueron más abundantes en bosques de llanura (e.g., Vireo solitarius, Empidonax minimus, Catharus ustulatus, Vermivora ruficapilla, Dendroica magnolia, D. castanea, Seiurus aurocapillus). La riqueza de especies en bosques de llanura con relación a el bosque ripario fue un 58% mayor para los grupos de aves transitorias Neotropicales y un 75% mayor para las aves transitorias templadas. El porcentaje de cobertura de urbanización en un radio de 1 km no se relacionó con la abundancia de aves transitorias Neotropicales ni con las transitorias templadas. La abundancia de las aves transitorias Neotropicales y templadas no se relacionó con la cobertura de bosque dentro de un radio de 1 km. Los bosques maduros de llanura y los bosques riparios se diferenciaron en que los sitios de bosque ripario tuvieron menor cobertura de arbustos, una mayor cobertura de dosel y una composición de especies de árboles diferente. La abundancia de las aves transitorias Neotropicales se relacionó positivamente con la altura promedio del dosel, mientras que las aves transitorias templadas se relacionaron positivamente con el número promedio de árboles con DAP >38 cm y con la cobertura promedio de arbustos. Nuestros datos indican que los bosques maduros de llanuras fueron utilizados con mayor intensidad por aves migratorias terrestres que los bosques riparios en un paisaje urbanizado del medio-oeste, y que estos bosques pueden representar un tipo de hábitat valioso para la conservación de las aves migratorias terrestres en un paisaje altamente fragmentado.
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Groffman, Peter M., Daniel J. Bain, Lawrence E. Band, Kenneth T. Belt, Grace S. Brush, J. Morgan Grove, Richard V. Pouyat, Ian C. Yesilonis i Wayne C. Zipperer. "Down by the riverside: urban riparian ecology". Frontiers in Ecology and the Environment 1, nr 6 (sierpień 2003): 315–21. http://dx.doi.org/10.1890/1540-9295(2003)001[0315:dbtrur]2.0.co;2.
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Chen, Yaning, Yapeng Chen, Honghua Zhou, Xingming Hao, Chenggang Zhu, Aihong Fu, Yuhai Yang i Weihong Li. "Research Advances in Plant Physiology and Ecology of Desert Riparian Forests under Drought Stress". Forests 13, nr 4 (15.04.2022): 619. http://dx.doi.org/10.3390/f13040619.
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Under drought stress, desert riparian forest plants are highly self-regulating and have their own unique water use and regulation strategies, which can respond positively in several aspects such as physiology, ecology, and individual phenotypes when coping and adapting to the stresses brought by external environmental changes. In addition, as an important component of arid zone ecosystems, desert riparian forest plants maintain the cycling process of energy and material in desert areas. Therefore, it is of great ecological value to study the role played by desert riparian forest plants in desertification control and biodiversity conservation in arid zones. The purpose of this study is to provide basic data and scientific basis for the conservation, and restoration of desert riparian forests in the inland river basin of arid zone. In this paper, the physiological and ecological responses of desert riparian plants under drought stress were analyzed by reviewing the literature and focusing on the key scientific issues such as drought avoidance mechanisms, water use, and water redistribution, and the relationship between interspecific water competition and resource sharing of desert riparian plants. The results showed that: (1) In the inland river basin of arid zone, desert riparian plants show a mutual coordination of increasing soluble sugars, proline, malondialdehyde (MDA), and decreasing peroxidase (POD), to form a unique drought avoidance mechanism, and improve their drought tolerance by changing leaf stomatal conductance resulted from regulating abscisic acid (ABA) and cytokinin (CTK) content. (2) Desert riparian forest plants have their own unique water use and regulation strategies. When the degree of drought stress increased, Populus euphratica enhanced the water flow of dominant branches by actively sacrificing the inferior branches to ensure and improve the overall survival chances of the plant, while Tamarix ramosissima weaken hydraulic conductance, and increase subsurface material inputs by reducing plant height to cope with drought stress. (3) The root systems of desert riparian plants have hydraulic uplift and water redistribution functions, and, in the hydraulic uplift process of P. euphratica and T. ramosissima root systems, there is a possibility of assisting with other species in water utilization and the existence of a resource sharing mechanism.
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Zheng, Jie, Lei Wang i Changxiao Li. "Trends and Hotspots in Riparian Restoration Research: A Global Bibliometric Analysis during 1990–2022". Forests 14, nr 11 (7.11.2023): 2205. http://dx.doi.org/10.3390/f14112205.
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Human activities and climate change have increased damage to riparian forest and their functions, stimulating interest in riparian restoration research and resulting in a surge of related publications. However, a comprehensive bibliometric analysis of riparian restoration research has been lacking until recently. To understand trends and hotspots in riparian restoration research, we performed a literature search of riparian restoration publications from 1990 to 2022 based on the Web of Science database. We found 2121 peer-reviewed articles, and then each paper was bibliometrically researched, analyzing authors, institutions, countries, citations, journals, publication years, and keywords. The results showed a growing number of annual articles during 1990–2022, but declining average citations. Environmental science, ecology, biodiversity conservation, engineering, and forestry were popular fields in riparian restoration. Publications on the riparian restoration field were widely dispersed in different journals, but Restoration Ecology and Ecological Engineering have higher influence and more publications and citations than other journals. Lorenz A. W., Nilsson C., and Kondolf G. M. were the most competitive authors because of their high number of publications and citations. The USA had the greatest research output and the most citations. American scientists preferred national collaboration, while Switzerland scientists engaged more in international collaborations. Research focus shifted from ecosystems and rivers before the 21st century to management topics after 2001 and biodiversity and conservation after 2011. This study provides valuable insights into the progress of riparian restoration research globally.
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Harley, Grant L., Emily K. Heyerdahl, James D. Johnston i Diana L. Olson. "Riparian and adjacent upland forests burned synchronously during dry years in eastern Oregon (1650–1900 CE), USA". International Journal of Wildland Fire 29, nr 7 (2020): 602. http://dx.doi.org/10.1071/wf19101.
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Riparian forests link terrestrial and freshwater communities and therefore understanding the landscape context of fire regimes in these forests is critical to fully understanding the landscape ecology. However, few direct studies of fire regimes exist for riparian forests, especially in the landscape context of adjacent upland forests or studies of long-term climate drivers of riparian forest fires. We reconstructed a low-severity fire history from tree rings in 38 1-ha riparian plots and combined them with existing fire histories from 104 adjacent upland plots to yield 2633 fire scars sampled on 454 trees. Historically (1650–1900), low-severity fires burned more frequently in upland than in riparian plots, but this difference was not significant (P=0.15). During more than half of the fire years at both sites, fires were extensive and burned synchronously in riparian and upland plots, and climate was significantly dry during these years. However, climate was not significantly dry when fires burned in only one plot type. Historically, entire riparian zones likely burned in these two study sites of the Blue Mountains during dry years. This study suggests that riparian and upland forests could be managed similarly, especially given the projected increases to fire frequency and intensity from impending climate change.
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Schneider-Binder, Erika. "Structure, Ecology and Phythogeographical Characteristics of Riparian Vegetation Along the Bârzava and Caraş Rivers (Banat, Romania)". Transylvanian Review of Systematical and Ecological Research 25, nr 2 (1.08.2023): 19–28. http://dx.doi.org/10.2478/trser-2023-0009.
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Abstract The riparian vegetation in the studied area have its particularties, due to the geographic position in the South-Western part of Romania with mountains and plains. These come together to give a most interesting and unique mosaic of habitats of riparian vegetation with a remarkable biodiversity. The climatic conditions and the relief with plains and mountains elements give the specific character to the studied riparian vegetation.
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Slater, F. M., i G. P. Malanson. "Riparian Landscapes." Journal of Ecology 82, nr 3 (wrzesień 1994): 704. http://dx.doi.org/10.2307/2261283.
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Allen, Edith B., i William A. Niering. "Riparian Restoration". Restoration Ecology 5 (28.06.2008): 1. http://dx.doi.org/10.1111/j.1526-100x.1997.tb00198.x.
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Collette, Liana K. D., i Jason Pither. "Russian-olive (Elaeagnus angustifolia) Biology and Ecology and its Potential to Invade Northern North American Riparian Ecosystems". Invasive Plant Science and Management 8, nr 1 (marzec 2015): 1–14. http://dx.doi.org/10.1614/ipsm-d-14-00037.1.
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AbstractRussian-olive is a small tree or large multistemmed shrub that was introduced to Canada and the United States from Eurasia in the early 1900s. It was provisioned in large numbers during the last century to prairie farmers as a shelterbelt plant and remains a popular and widely available ornamental. Now invasive within some riparian ecosystems in the western United States, Russian-olive has been declared noxious in the states of Colorado and New Mexico. With traits including high shade tolerance and a symbiotic association with nitrogen-fixing bacteria, Russian-olive has the potential to dominate riparian vegetation and thus radically transform riparian ecosystems. Especially alarming is its capacity to influence nutrient dynamics within aquatic food webs. Our objective is to draw attention to Russian-olive as a potential threat to riparian ecosystems within Canada, especially in the southwest, where invasion is becoming commonplace. We review what is known about its biology and about the threats it poses to native organisms and ecosystems, and we summarize management and control efforts that are currently underway. We conclude by proposing a research agenda aimed at clarifying whether and how Russian-olive poses a threat to riparian ecosystems within western Canada.
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Auble, G. T. "Great Basin Riparian Ecosystems: Ecology, Management, and Restoration". Restoration Ecology 13, nr 1 (marzec 2005): 237–38. http://dx.doi.org/10.1111/j.1526-100x.2005.00br2.x.
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Ratih, Yudhitia, Jockie Zudhy Fibrianto i Arsanti Budiarti. "Design Model of Riparian Area of Panjang Island in the Kapuas River". Vokasi: Jurnal Publikasi Ilmiah 18, nr 2 (31.12.2023): 83–89. http://dx.doi.org/10.31573/jv.v18i2.687.
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Development of riparian areas based on urban ecology, where there is an ecosystem that is dominated by humans, but still maintains the existing natural system, especially in river riparian green areas. Panjang Island, which is at the mouth of the Kapuas River, is an island that divides the Kapuas River into the Big Kapuas River and the Small Kapuas River. This island has varieties of vegetation in riparian areas that have different and varied characters. So, the varied vegetation patterns in the riparian areas make the water quality different in each zone (Ratih, 2022). The Panjang Island riparian area is an area that is threatened by human activities around it, and with the plan to build the Kapuas III Toll Bridge which will pass through this island, of course there will be a shift in land use functions around the Panjang Island riparian area and also the Kapuas River. This research is a continuation of previous research, where digital identification and mapping was carried out on Panjang Island, namely by developing a concept and making a design model for the Panjang Island riparian area, which still maintains the conservation of the riparian area.
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Gende, Scott M., i Mary F. Willson. "Passerine Densities in Riparian Forests of Southeast Alaska: Potential Effects of Anadromous Spawning Salmon". Condor 103, nr 3 (1.08.2001): 624–29. http://dx.doi.org/10.1093/condor/103.3.624.
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AbstractSpawning salmon (Oncorhynchus spp.) greatly influence many biotic processes in both the aquatic and terrestrial components of riparian systems, possibly including the community of breeding birds. In southeastern Alaska in 1996–1997, the riparian forests bordering salmon streams supported, on average, higher densities, but not diversity, of forest passerines compared to non-salmon streams. The presence of salmon in the fall increases the abundance of terrestrial and aquatic invertebrates and possibly enhances food resources to riparian birds in the spring.Densidades de Aves Paserinas en Bosques Riparios del Sureste de Alaska: Efectos Potenciales del Desove de Salmones AnádromosResumen. El desove de salmones anádromos (Oncorhynchus spp.) ejerce una importante influencia sobre muchos procesos bióticos en los componentes acuáticos y terrestres de los sistemas ribereños, incluyendo posiblemente las comunidades de aves. Entre 1996 y 1997, los bosques riparios del sureste de Alaska ubicados alrededor de arroyos con salmones tuvieron en promedio mayores densidades (pero no mayor diversidad) de aves paserinas de bosque que bosques situados alrededor de arroyos sin salmones. La presencia de los salmones en el otoño incrementa la abundancia de invertebrados terrestres y acuáticos y posiblemente causa aumentos en la cantidad de recursos alimenticios disponibles para las aves ribereñas en la primavera.
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Briers, R. A., i J. H. R. Gee. "Riparian forestry management and adult stream insects". Hydrology and Earth System Sciences 8, nr 3 (30.06.2004): 545–49. http://dx.doi.org/10.5194/hess-8-545-2004.
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Abstract. The impacts of coniferous plantation forestry on the biology of upland streams in the UK are firmly established. Whilst benthic communities have been well studied, very little research has considered the impacts of riparian forestry management on adult stream insects, yet the essentially terrestrial adult (reproductive) phase may be important in determining the abundance and distribution of larval stages. Riparian vegetation has a potentially strong impact on survival and success of adult stages through alteration of microclimate, habitat structure and potential food sources, in addition to effects carried over from larval stages. Here, current riparian management strategies are analysed in the light of available information on the ecology of adult stream insects. On the whole, management practices appear to favour adult stream insects, although an increase in tree cover in riparian areas could be beneficial, by providing more favourable microclimatic conditions for adults. This conclusion is drawn based on rather limited information, and the need for further research into the effects of riparian forestry management on adult stream insects is highlighted. Keywords: microclimate, plantation, life history, riparian vegetation
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Jackson, Breeanne K., i S. Mažeika P. Sullivan. "Influence of wildfire severity on geomorphic features and riparian vegetation of forested streams of the Sierra Nevada, California, USA". International Journal of Wildland Fire 29, nr 7 (2020): 611. http://dx.doi.org/10.1071/wf19114.
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Fires are a common feature of many landscapes, with numerous and complex ecological consequences. In stream ecosystems, fire can strongly influence fluvial geomorphic characteristics and riparian vegetation, which are structural components of stream–riparian ecosystems that contribute to biodiversity and ecosystem function. However, the effects of fire severity on stream–riparian ecosystems in California’s Sierra Nevada region (USA) are not well described, yet critical for effectively informing fire management and policy. At 12 stream reaches paired by fire severity (one high-severity burned, one low-severity burned), no significant differences were found in riparian plant community cover and composition or stream geomorphic characteristics 2–15 years following wildfire. In addition, minimal changes in riparian vegetation and stream geomorphic properties were observed in the first summer following the extensive and severe Rim Fire. However, an upstream-to-downstream influence of multiple fire occurrences was observed over the previous 81 years within each catchment on stream geomorphic metrics, including sediment size, embeddedness and channel geometry, at our study reaches. The inconsistent effects of wildfire on stream–riparian vegetation and geomorphic characteristics over space and time may be related to time since fire and precipitation.
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Komonen, Atte, Mari E. Niemi i Kaisa Junninen. "Lakeside riparian forests support diversity of wood fungi in managed boreal forests". Canadian Journal of Forest Research 38, nr 10 (październik 2008): 2650–59. http://dx.doi.org/10.1139/x08-105.
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Riparian forests often have a more diverse tree species composition and more woody debris than neighboring upland forests, but little is known about their importance for the conservation of deadwood-dependent species. We studied the forest characteristics and the diversity of wood fungi (poroid Aphyllophorales) in lakeside riparian (flat and sloping topography) and upland boreal forests in eastern Finland. Riparian forests had a higher density of broadleaved trees and broadleaved debris than did upland forests. A total of 48 species of wood fungi were recorded, including eight red-listed or old-growth forest indicator species. Overall, more species and records and greater diversity were observed in the flat riparian sites than in the sloped riparian and upland sites. The mean species richness did not differ significantly among site categories, indicating greater β diversity among the flat riparian sites. Species composition was more similar between the two riparian categories than between the riparian and upland sites. Riparian sites also hosted more fungal species associated with broadleaved trees. The results show that riparian forests support the diversity of wood fungi in managed boreal forests. Diversity of deadwood-dependent organisms can be promoted by leaving wider and completely unharvested riparian buffer zones.
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Rassam, D. W., i D. Pagendam. "Development and application of the Riparian Mapping Tool to identify priority rehabilitation areas for nitrogen removal in the Tully - Murray basin, Queensland, Australia". Marine and Freshwater Research 60, nr 11 (2009): 1165. http://dx.doi.org/10.1071/mf08358.
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One feature of riparian zones is their ability to significantly reduce the nitrogen loads entering streams by removing nitrate from the groundwater. A novel GIS model was used to prioritise riparian rehabilitation in catchments. It is proposed that high-priority areas are those with a high potential for riparian denitrification and have nearby land uses that generate high nitrogen loads. For this purpose, we defined the Rehabilitation Index, which is the product of two other indices, the Nitrate Removal Index and the Nitrate Interception Index. The latter identifies the nitrate contamination potential for each raster cell in the riparian zone by examining the extent and proximity of agricultural urban land uses. The former is estimated using a conceptual model for surface–groundwater interactions in riparian zones associated with middle-order gaining perennial streams, where nitrate is removed via denitrification when the base flow interacts with the carbon-rich riparian sediments before discharging to the streams. Riparian zones that are relatively low in the landscape, have a flat topography, and have soils of medium hydraulic conductivity are most conducive to denitrification. In the present study, the model was implemented in the Tully–Murray basin, Queensland, Australia, to produce priority riparian rehabilitation area maps.
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Derose, Kelsey L., Charles F. Battaglia, Danny J. Eastburn, Leslie M. Roche, Theresa A. Becchetti, Holly A. George, David F. Lile, Donald L. Lancaster, Neil K. McDougald i Kenneth W. Tate. "Riparian health improves with managerial effort to implement livestock distribution practices". Rangeland Journal 42, nr 3 (2020): 153. http://dx.doi.org/10.1071/rj20024.
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Optimising the spatial distribution of free-ranging livestock is a significant challenge in expansive, grazed landscapes across the globe. Grazing managers use practices such as herding (i.e. droving), strategic placement of off-stream livestock drinking water and nutritional supplements, and strategic fencing in attempts to distribute livestock away from sensitive streams and riparian areas. We conducted a cross-sectional survey of 46 cattle-grazed riparian areas and associated stream reaches embedded in rugged range landscapes to examine relationships between implementation of these management practices, stocking rate, and riparian health. We determined in-stream benthic invertebrate assemblages at each site to serve as an integrative metric of riparian health. We also collected information from the grazing manager on stocking rate and implementation of livestock distribution practices at each site over the decade before this study. Off-stream livestock drinking-water sources were implemented at just two sites (4.3%), indicating that this was not a common distribution practice in these remote management units. We found no significant relationship of riparian health (i.e. invertebrate richness metrics) with stocking rate (P ≥ 0.45 in all cases), or with the simple implementation (yes/no) of off-stream nutritional supplements, fence maintenance, and livestock herding (P ≥ 0.22 in all cases). However, we did find significant positive relationships between riparian health and managerial effort (person-days spent per year for each individual practice) to implement off-stream nutritional supplements and fence maintenance (P ≤ 0.017 in all cases). Livestock herding effort had an apparent positive association with riparian health (P ≥ 0.2 in all cases). Results highlight that site-specific variation in managerial effort accounts for some of the observed variation in practice effectiveness, and that appropriate managerial investments in grazing distributional practices can improve riparian conditions.
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Quiroga, Virginia, Rodrigo E. Lorenzón, Gisela Maglier i Ana L. Ronchi-Virgolini. "Relationship between Morphology and Trophic Ecology in an Assemblage of Passerine Birds in Riparian Forests of the Paraná River (Argentina)". Avian Biology Research 11, nr 1 (luty 2018): 44–53. http://dx.doi.org/10.3184/175815617x15114328596437.
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We describe the ecomorphology of an assemblage of bird species found in riparian forests of the Middle Paraná River, Argentina. We sought to determine (1) the more important morphological characteristics that separate coexisting species, (2) whether such separation was related to the trophic ecology of each species and (3) whether a priori guilds showed morphological similarity. We tested the hypotheses that (a) a species’ morphology is related to the trophic ecology of that species and (b) that species of a priori guilds are morphometrically more similar to each other than to species of different a priori guilds. For this, we considered an assemblage of 29 species of birds from riparian forest that were sampled with mist nets during the 2011 and 2014 breeding seasons. We obtained morphometric measurements of captured individuals and supplemented those data with measurements from museum specimens. Trophic characterisation (diet and trophic microhabitat) was based on a literature review. Results showed a separation of bird species as a function of variables related to trophic ecology (diets and trophic microhabitats) and morphology. After controlling for phylogenetic constraint, species’ morphology partially reflected the trophic ecology of the species, supporting the central hypothesis of the ecomorphological discipline and showing that the use of trophic and morphometric data provides complementary data to improve the guild organisation of riparian bird assemblages.
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Lavallee, Susanne L., i John S. Richardson. "Relative abundance and movement of the carabid beetle Scaphinotus angusticollis in managed coniferous riparian forests of southwestern British Columbia". Canadian Journal of Forest Research 40, nr 4 (kwiecień 2010): 611–18. http://dx.doi.org/10.1139/x10-003.
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Riparian reserves designed to protect stream ecosystems are valuable to the conservation of riparian obligate and forest-preferring species; however, there have been few studies of terrestrial invertebrates with more general habitat requirements. To characterize the use of riparian reserves by terrestrial insects, we examined the ecology of Scaphinotus angusticollis Mannerheim, a large and abundant carabid beetle with a broad distribution in coniferous forests of western North America. Population sizes and movement behaviour of S. angusticollis were contrasted among clearcuts, 30 m reserves, and unharvested riparian forests near Vancouver, British Columbia, Canada, with three sites per habitat type. The relative abundances of S. angusticollis were as high in 30 m reserve habitats as they were in unharvested forests, whereas populations in clearcuts were approximately half the size of those found in 30 m reserves. Beetle distributions relative to nearby streams were similar across habitat types. Beetles moved twice as far in 30 m reserves than in clearcuts, suggesting there are differences in this beetle’s perception of reserve habitat. This study provides evidence that 30 m riparian reserves offer habitat that maintains population sizes and facilitates movement of terrestrial insect species like S. angusticollis at levels similar to that of unharvested riparian forests.
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Carlisle, Jay D., Sarah L. Stock, Gregory S. Kaltenecker i David L. Swanson. "Habitat Associations, Relative Abundance, and Species Richness of Autumn Landbird Migrants in Southwestern Idaho". Condor 106, nr 3 (1.08.2004): 549–66. http://dx.doi.org/10.1093/condor/106.3.549.
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AbstractWe used count surveys and mist-net captures to compare habitat associations, relative abundance, species richness, and community similarity of migrant landbirds among four major habitats in the Boise Foothills of southwestern Idaho. Count surveys were conducted from August through October 1997–2000 in conifer forest, mountain shrubland, shrubsteppe, and riparian shrubland. We compared bird detections among habitats for all birds pooled, individual species, and three migration strategies: Neotropical, temperate, and resident (including irruptive migrants). Mountain shrubland supported the highest numbers of temperate migrants; both mountain shrubland and riparian shrubland had the highest numbers of Neotropical migrants; and conifer forest had the highest numbers of residents. Species richness was highest in riparian shrubland and lowest in shrubsteppe, whereas diversity and evenness were highest in conifer forest and mountain shrubland. Mist netting was conducted from mid-July to mid-October in two habitats: mountain shrubland (1997– 2002) and riparian shrubland (1998–1999). Captures (adjusted for effort) were compared among habitats in 1998–1999 and were similar for temperate migrants, whereas mountain shrubland had higher abundance of Neotropical migrants and riparian shrubland had higher abundance of irruptive migrants. Richness, diversity, and evenness were similar and there was high community similarity between mountain shrub and riparian shrubland habitats. These results emphasize the importance of montane habitats, especially deciduous shrub communities, to migrants in the Intermountain West.Asociaciones de Hábitat, Abundancia Relativa y Riqueza de Especies de Aves Migratorias Terrestres de Otoño en el Sudoeste de IdahoResumen. Empleamos muestreos por conteos y capturas con redes de niebla para comparar asociaciones de hábitat, abundancia relativa, riqueza de especies, y similitud entre comunidades de aves migratorias terrestres, presentes en los cuatro hábitats principales de piedemonte de Boise en el sudoeste de Idaho. Los conteos fueron realizados entre agosto hasta octubre de los años 1997–2000 en bosque de coníferas, hábitat de matorral de montaña, matorral de estepa, y en matorral ripario. Comparamos la detección de aves entre hábitats para todas las especies juntas, para cada especie por separado y para tres categorías de estrategia de migración: especies migratorias neotropicales, especies migratorias de la zona templada y especies residentes (incluyendo migrantes irruptivas). El hábitat de matorral de montaña tuvo los números más altos de especies migratorias templadas. Los hábitats de matorral de montaña y matorral ripario tuvieron los números más altos de especies migratorias neotropicales y el bosque de coníferas tuvo los números más altos de especies residentes. La riqueza de especies fue mayor en el matorral ripario y menor en el matorral de estepa, mientras que la diversidad y la equidad fueron mayores en bosque de coníferas y matorral de montaña. El muestreo con redes de niebla se llevó a cabo desde mediados de julio hasta mediados de octubre en dos hábitats: matorral de montaña (1997–2002) y matorral ripario (1998–1999). Las capturas (ajustadas por esfuerzo de muestreo) fueron comparadas entre hábitats en 1998–1999. La abundancia de las especies migratorias de la zona templada fue similar entre hábitats, mientras que el hábitat de matorral de montaña tuvo la mayor abundancia de especies migratorias neotropicales y el matorral ripario tuvo la mayor abundancia de especies migratorias irruptivas. La riqueza, la diversidad y la equidad fueron similares entre hábitats y las comunidades de los hábitats de matorral de montaña y matorral ripario presentaron alta similitud. Estos resultados enfatizan la importancia de los hábitats de montaña, especialmente la de los hábitats de comunidades arbustivas deciduas, para las especies migratorias en el oeste intermontano.
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Stringham, Tamzen K., William C. Krueger i David R. Thomas. "Application of Non-Equilibrium Ecology to Rangeland Riparian Zones". Journal of Range Management 54, nr 3 (maj 2001): 210. http://dx.doi.org/10.2307/4003236.
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Huggenberger, P., E. Hoehn, R. Beschta i W. Woessner. "Abiotic aspects of channels and floodplains in riparian ecology". Freshwater Biology 40, nr 3 (listopad 1998): 407–25. http://dx.doi.org/10.1046/j.1365-2427.1998.00371.x.
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Aspi, J., J. Lumme, A. Hoikkala i E. Heikkinen. "Reproductive ecology of the boreal riparian guild of Drosophila". Ecography 16, nr 1 (styczeń 1993): 65–72. http://dx.doi.org/10.1111/j.1600-0587.1993.tb00059.x.
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Sekercioglu, Cagan H. "Tropical Ecology: Riparian Corridors Connect Fragmented Forest Bird Populations". Current Biology 19, nr 5 (marzec 2009): R210—R213. http://dx.doi.org/10.1016/j.cub.2009.01.006.
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Wang, Kehong, Xingzhong Yuan, Guanxiong Zhang, Shuangshuang Liu, Fang Wang, Hong Liu, Mengjie Zhang i Lilei Zhou. "Diversity and Distribution of Riparian Arthropods in the Drawdown Zone of China’s Three Gorges Reservoir". Environmental Entomology 48, nr 6 (30.09.2019): 1340–48. http://dx.doi.org/10.1093/ee/nvz104.
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Abstract Riparian zones are interesting habitats as they are important transitional zones between terrestrial and aquatic ecosystems, but highly threatened by human disturbances. They support a high arthropod diversity as they experience periodic flooding disturbance and sharp environmental gradients. Their associated arthropod fauna are of high conservation value. Nevertheless, their arthropod diversity remains largely unknown, and its distribution pattern along elevational gradients is poorly understood. Few data are available on the effects of flood regimes and other factors in determining riparian arthropod communities. In this study, we investigated the diversity and distribution of riparian arthropods along an elevational gradient and determined the major factors structuring the arthropod communities in the drawdown zone of the Three Gorges Reservoir, China. Significant compositional and structural changes of riparian arthropod communities were observed along the test elevational gradient. The abundance and richness of riparian arthropods increased with elevation. The relative abundance of predators decreased with elevation, whereas the saprovores and omnivores showed an upward trend along the elevational gradient. Redundancy analysis showed that there were significant interactions between the flood regimes, plant communities, and soil conditions. Among these environmental factors studied, flood duration was the main factor in structuring the riparian arthropod communities. Conservation and restoration strategies should consider flood duration in the operation of large reservoirs because riparian arthropods are particularly sensitive to flood regimes.
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Murgu, Cristian Andrei, i Geta Rîșnoveanu. "Bridging the Gaps: Exploring Aquatic–Terrestrial Connectivity through the Trait-Based Ecology of Riparian Predatory Arthropods". Water 15, nr 22 (16.11.2023): 3983. http://dx.doi.org/10.3390/w15223983.
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Riparian predatory arthropods represent one of the main trophic links between lotic and terrestrial ecosystems along riverine landscapes. The use of the trait-based approach promises to enhance our understanding of how these predatory communities interact with their environment through their response to various drivers of change and through their trophic interactions. We reviewed the scientific literature focused on the interaction between drivers of community change (natural and anthropogenic) and the functional traits and functional diversity components that characterize riparian ground beetles and spiders and, ultimately, on their role as cross-ecosystem trophic links. We highlight land use changes and river regulations as the strongest drivers that change the communities we study, often through various interacting mechanisms that favor the replacement of riparian specialists with generalist species, thus altering aquatic–terrestrial connectivity and the resilience of riverine arthropod consumers. Tropical regions and traits related to community responses to extreme climatic events (e.g., submersion tolerance and desiccation resistance) are less studied, while inconsistent patterns are noticed for well-studied traits, especially for spiders (e.g., their feeding preference response to aquatic subsidy availability and their body size response to flooding and bank hydrological connectivity). Future research should focus on the aforementioned drivers and knowledge gaps, along with the functional diversity changes in predatory arthropod communities along environmental and anthropogenic impact gradients, in order to improve riparian conservation.
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Rykken, Jessica J., Samuel S. Chan i Andrew R. Moldenke. "Headwater Riparian Microclimate Patterns under Alternative Forest Management Treatments". Forest Science 53, nr 2 (1.04.2007): 270–80. http://dx.doi.org/10.1093/forestscience/53.2.270.
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Abstract Management of headwater streams and their riparian zones has included the implementation of forested riparian buffers, which are intended to protect ecological processes (such as microclimate) and biota, but the appropriate widths for these buffers have been widely debated. We measured the magnitude and extent of microclimatic gradients associated with headwater streams in mature unmanaged forests, and determined whether these patterns were maintained in clearcut harvested units with and without a 30 m-wide riparian buffer on each side of the stream. We measured air temperature, soil temperature, and relative humidity between 1 and 70 m from the stream in five replicate blocks of three treatments each in western Oregon. Results indicated the strongest stream effect on air temperature and relative humidity to be within 10 m of the stream in all management treatments at 3:00 pm, and gradients were evident to 20 m in the forested treatment. The clearcut was significantly hotter (air and soil) and drier than either the riparian buffer or the forest treatments at 3:00 pm. The riparian buffer and forest had similar microclimates at all distances from the stream, suggesting that the 30-m buffer adequately protected the riparian microclimatic gradient. We hypothesize that the strong stream effect on microclimate in the riparian zone serves a critical role in mitigating the influence of microclimatic “edge effects” associated with the forest-clearcut edge. Biota dependent on cool, humid microclimates provided by riparian zones will benefit from the implementation of riparian buffers in harvest units.
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Halofsky, Jessica E., i David E. Hibbs. "Determinants of riparian fire severity in two Oregon fires, USA". Canadian Journal of Forest Research 38, nr 7 (lipiec 2008): 1959–73. http://dx.doi.org/10.1139/x08-048.
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We sought to understand how vegetation indicators and local topographic factors interact to influence riparian fire severity in two recent fires in Oregon, USA. A stratified random sampling design was used to select points in a range of fire severity classes, forest stand ages, and stream sizes in each fire. At each point, plots were sampled in riparian areas and adjacent uplands. Fire severity was assessed in each plot, and measurements were made of factors that have been found to influence riparian fire severity. Understory fire severity (percent exposed mineral soil and bole char height) was significantly lower in riparian areas compared with adjacent uplands in both fires, suggesting a decoupling in understory fire effects in riparian areas versus uplands. However, overstory fire severity (percent crown scorch and percent basal area mortality) was similar in riparian areas and adjacent uplands in both fires. Fire severity in riparian areas was most strongly associated with upland fire severity. In addition, vegetation indicators, particularly those describing riparian fine fuel component and species composition, were strong predictors of riparian fire severity. Consistency in factors controlling fire severity in the two fires suggests that controls on riparian fire severity may be similar in other regions.
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Daniels, CB. "Aspects of the Aquatic Feeding Ecology of the Riparian Skink Sphenomorphus-Quoyii". Australian Journal of Zoology 35, nr 3 (1987): 253. http://dx.doi.org/10.1071/zo9870253.
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The riparian skink Sphenomorphus quoyii can catch aquatic prey. Aquatic animals represent 26.4% of prey items, and occur in 18% of stomachs. This frequency is much higher than previously recorded for S. quoyii but is similar to that of other small riparian lizards. In laboratory experiments, S. quoyii captured aquatic prey items as they rose to the surface of water-filled containers. The skinks did not forage under water. Damselfly larvae, water beetles and tadpoles, that often swam slowly and near the surface, were easily captured. Snails that remained on the bottom, and mosquito-fish that were too fast, were not often eaten. There was no apparent size selection for either small or large tadpoles.
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Plaza, Jeszianlenn L., Ephrime B. Metillo i Marites B. Sanguila. "Trophic ecology of syntopic anurans of tropical stream communities". Journal of Tropical Ecology 37, nr 3 (maj 2021): 109–17. http://dx.doi.org/10.1017/s0266467421000158.
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AbstractWe investigated trophic resource partitioning in seven syntopic anurans from low- and mid-elevation stream habitats of a tropical riparian ecosystem by utilising stomach content analysis (SCA) and stable isotope analysis (SIA). Our SCA data revealed dietary similarities, narrow trophic niche breadth, and low dietary niche overlap in Ansonia muelleri, Limnonectes magnus, Occidozyga laevis, Megophrys stejnegeri, Pulchrana grandocula, Sanguirana mearnsi, and Staurois natator which could be attributed to these anurans’ selection of available local prey items. We confirmed ant-specialisation (myrmecophagy) of the Mindanao island endemic bufonid A. muelleri based on our temporal SCA dietary data. Our SIA estimates of assimilation of potential prey sources confirmed that L. magnus, P. grandocula, and O. laevis are generalist predators, opportunistically feeding on locally abundant insect prey items. This study on trophic resource partitioning in syntopic anurans provides the first picture of trophic interactions, i.e., predation and competition in stream communities in tropical riparian zones of a watershed ecosystem in northeast Mindanao of the southern Philippines.
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Lawson, Tina, Miriam Goosem i David Gillieson. "Rapid assessment of habitat quality in riparian rainforest vegetation". Pacific Conservation Biology 14, nr 1 (2008): 20. http://dx.doi.org/10.1071/pc080020.
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GIS and aerial photographic techniques were applied to assessing riparian vegetation quality in an agricultural landscape formerly covered in lowland rainforest. Canopy cover and width of woody riparian vegetation, both easily determined from remotely sensed data, were investigated as indicators of riparian quality. High correlations between field measurements of canopy cover and width of woody riparian vegetation with several other vegetation attributes indicative of vegetation quality (weed abundance, debris, human disturbance, native species richness) demonstrated that these two habitat attributes were suitable field vegetation quality surrogates. Desktop quality analysis combined GIS measurement of riparian width with aerial photographic analysis of canopy cover. Desktop quality equalled field quality in 78% of cases, with a further 13% showing errors due to clearing or thickening of vegetation after aerial photographs were taken. Bird communities in higher vegetation quality areas comprised mainly rainforest-dependent species, whereas poor quality areas mostly supported birds of open habitats. Bird community diversity and rainforest-dependent bird diversity increased significantly both with increasing levels of canopy cover and greater riparian width, but a combination of these factors explained more variance than each factor separately. Desktop riparian vegetation quality therefore proved a satisfactory indicator of habitat quality for birds in rainforest riparian zones. This quick and efficient desktop method of riparian habitat quality assessment can determine conservation values of rainforest riparian areas with minimal field validation, thereby allowing more effective targeting of appropriate management practices, identification of areas of conservation concern and prioritisation of revegetation and rehabilitation efforts.
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Hoover, Trent M., Xavier Pinto i John S. Richardson. "Riparian canopy type, management history, and successional stage control fluxes of plant litter to streams". Canadian Journal of Forest Research 41, nr 7 (lipiec 2011): 1394–404. http://dx.doi.org/10.1139/x11-067.
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The food webs of forest stream ecosystems are based primarily on cross-boundary flows of terrestrial plant litter (PL). As such, changes in the composition of riparian forest canopies can alter flows of PL, affecting the ecosystem functioning of adjacent streams. We measured seasonal changes in PL fluxes to 20 small streams flowing through temperate rain forests in southwestern British Columbia to determine how riparian forest type and riparian management history influence resource availability in these systems. Differences in PL fluxes among the four riparian forest types studied were most pronounced in the summer, when PL fluxes from clearcuts < riparian reserve strips and coniferous forests, and PL fluxes from deciduous-dominated forests < riparian reserve strips. PL fluxes also varied among seasons (spring < summer < autumn). Fluxes were similar in riparian reserve strips and coniferous forests of similar age, indicating that reserve strips maintain this crucial ecosystem process. Clearcutting of riparian forests dramatically increased light availability while reducing leaf litter inputs; these effects, however, lasted only a few years. As riparian forest stand age increased, inputs shifted from broadleaf to coniferous inputs, indicating a possible long-term decrease in the lability of the leaf litter resources available to stream consumers.
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Hawkins, Charles P., Kate L. Bartz i Christopher M. U. Neale. "Vulnerability of Riparian Vegetation to Catastrophic Flooding: Implications for Riparian Restoration". Restoration Ecology 5, nr 4S (grudzień 1997): 75–84. http://dx.doi.org/10.1111/j.1526-100x.1997.00075.x.
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Hawkins, Charles P., Kate L. Bartz i Christopher M. U. Neale. "Vulnerability of Riparian Vegetation to Catastrophic Flooding: Implications for Riparian Restoration". Restoration Ecology 5 (28.06.2008): 75–84. http://dx.doi.org/10.1111/j.1526-100x.1997.tb00207.x.
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Saklaurs, Mārcis, Stefānija Dubra, Līga Liepa, Diāna Jansone i Āris Jansons. "Vegetation Affecting Water Quality in Small Streams: Case Study in Hemiboreal Forests, Latvia". Plants 11, nr 10 (16.05.2022): 1316. http://dx.doi.org/10.3390/plants11101316.
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Riparian forests are important ecosystems located along the margins of freshwaters. Riparian zones provide many ecosystem services, such as nutrient modification, erosion and temperature control, leading to improvements in water quality in adjacent water ecosystems. In many areas, riparian forest management is restricted to improve adjacent water quality. The potential influence of forest management on water quality of small streams was assessed by analysing species composition and structural diversity in riparian forests. We collected data in riparian forests along 15 streams in the eastern Baltics (Latvia) with different water quality classes. We used detrended correspondence analysis and indicator species’ analysis to determine relationships between woody plants and understory vegetation. We also used ADONIS and ANOSIM analysis to determine possible factors that affect species composition. Our results suggested that water quality is affected by ground vegetation, which in turn was altered by stand density and total yield. Site-specific decision making in management is required in riparian forests to ensure the required conditions in the streams, because species composition differs between sites, dominant tree species and stand parameters (density, total yield, stand age). Introduction of Betula pubescens Ehrh. in coniferous stands is favourable to ensure litter fall quality and provide shade for streams during summer.
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Holmes, Kathryn L., P. Charles Goebel i Arthur E. L. Morris. "Characteristics of downed wood across headwater riparian ecotones: integrating the stream with the riparian area". Canadian Journal of Forest Research 40, nr 8 (sierpień 2010): 1604–14. http://dx.doi.org/10.1139/x10-106.
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Although downed wood is a significant structural component of riparian ecotones, most studies of downed wood dynamics are conducted only within the stream bankfull channel or on the riparian forest floor. We examined downed wood structural characteristics (e.g., length, volume, and decay class) across the entire riparian ecotone of seven headwater streams in mature deciduous forests of northeastern Ohio to understand the structural relationships between downed wood and riparian ecotones. Sampling was stratified by hydrogeomorphic zones that were defined by lateral position within the riparian ecotone and correspond to differing fluvial geomorphology. Most downed wood pieces sampled were small (<1 m) and with a high decay class. Downed wood pieces within the baseflow zone (within the wetted channel) were smaller and more abundant than those within the transitional zone (within the bankfull channel excluding the wetted channel). Surface contact was inversely related to aquatic influence across the riparian ecotone, with downed wood in Zone 3 (riparian area beyond the bankfull channel) having significantly higher contact than wood within the other zones. The ecotonal approach and the incorporation of hydrogeomorphic influences is an alternative approach that moves beyond traditional approaches to more holistic management of riparian forests.
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Mosley, Erin, Stephen B. Holmes i Erica Nol. "Songbird diversity and movement in upland and riparian habitats in the boreal mixedwood forest of northeastern Ontario". Canadian Journal of Forest Research 36, nr 5 (1.05.2006): 1149–64. http://dx.doi.org/10.1139/x06-010.
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Little is known about the importance of riparian areas in supporting avifaunal diversity in the boreal mixedwood forest, especially outside of the breeding season. Bird populations were sampled by mist netting 18 upland and 18 riparian sites along six streams in a forested region of northeastern Ontario. Riparian sites generally had more variable vegetation than upland sites. Some riparian sites formed distinctive habitats, while others were structurally and compositionally similar to upland sites. During spring and fall migration, there was no significant difference in bird abundance or species richness between riparian and upland habitats. During the breeding period, riparian areas had greater avian species richness and abundance and more insects than upland forests, suggesting that birds were selecting these habitats because they contain more food. More birds were captured in nets placed perpendicular to the stream than parallel during the breeding and fall migration periods, suggesting that riparian areas may function as movement corridors. A greater understanding of the importance of riparian habitats to songbird communities is needed if we are to maximize the effectiveness of these regions for conserving avian biodiversity in the boreal mixedwood forest.
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Elderd, Bret D. "THE IMPACT OF CHANGING FLOW REGIMES ON RIPARIAN VEGETATION AND THE RIPARIAN SPECIES MIMULUS GUTTATUS". Ecological Applications 13, nr 6 (grudzień 2003): 1610–25. http://dx.doi.org/10.1890/02-5371.
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Laceby, J. Patrick, Nina E. Saxton, Kate Smolders, Justine Kemp, Stephen J. Faggotter, Tanya Ellison, Doug Ward, Morag Stewart i Michele A. Burford. "The effect of riparian restoration on channel complexity and soil nutrients". Marine and Freshwater Research 68, nr 11 (2017): 2041. http://dx.doi.org/10.1071/mf16338.
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Restoration of riparian vegetation may reduce nutrient and sediment contamination of waterways while potentially enhancing stream channel complexity. Accordingly, the present study used a paired-site approach to investigate the effects of mature regrowth riparian vegetation on river channel morphology and soil nutrients (i.e. nitrogen and phosphorus), comparing four sites of degraded (pasture) and reforested reaches. A revised rapid assessment of riparian condition (RARC) was used to validate the site pairings. Riparian soil nutrient and elemental geochemistry were compared between paired sites, along with two parameters of channel width complexity and two for channel slope complexity. The RARC analysis confirmed the validity of the paired site design. The elemental geochemistry results indicated that underlying geology may affect the paired site analyses. Reaches with mature regrowth vegetation had greater channel width complexity but no difference in their riverbed slope complexity. In addition, degraded reaches had higher soil nutrient (i.e. nitrogen and phosphorus) concentrations, potentially indicative of the greater nutrient retention of pasture grass sites compared with mature regrowth forested reaches with less ground cover. Overall, the present study indicates that restoring mature regrowth riparian vegetation may increase river channel width complexity, although it may require canopy management to optimise the nutrient retention potential necessary to maximise the effect of riparian restoration strategies on freshwater environments.
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Stackhouse, Leanna A., Nicholas C. Coops, Joanne C. White, Piotr Tompalski, Jeffery Hamilton i Donald J. Davis. "Characterizing riparian vegetation and classifying riparian extent using airborne laser scanning data". Ecological Indicators 152 (sierpień 2023): 110366. http://dx.doi.org/10.1016/j.ecolind.2023.110366.
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Saputra, Syifa, Endang Arisoesilaningsih, Nia Kurniawan i Catur Retnaningdyah. "Assessment of Riparian Ecosystem Health in the Tamiang River, Aceh, Indonesia as Remains Habitat of Batagur borneoensis (Schlegel & Muller, 1844)". Journal of Tropical Life Science 13, nr 3 (18.10.2023): 517–28. http://dx.doi.org/10.11594/jtls.13.03.10.
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The riparian zone along the Tamiang River, Aceh Province, is an important habitat for the survival of the tuntong laut (Batagur borneoensis) which is already threatened with extinction. This study aims to evaluate the quality and role of the riparian zone as a habitat for B. borneoensis along the Tamiang River, which can then be used as a reference in conservation. Riparian habitat quality was assessed by calculating the Qualitat del Bosc de Ribera (QBR) index, which was determined based on the total riparian cover, cover structure, cover quality, and channel alteration. In addition, observations of water quality (salinity, turbidity, and dissolved oxygen (DO)) and the number of riparian vegetation species were also carried out. Monitoring was carried out at five stations: Iyu River, Kampung Baru, Batang Lawang, Pusong Kapal Dermaga, and Pusong Kapal. The results showed variations in water quality between locations with DO and turbidity levels exceeding the quality standards set by the government. The richness of the types of riparian vegetation found ranged from 0-8 species (seedlings), 2-7 species (saplings), and 1-4 species (poles). The quality of riparian habitats in all study locations experienced significant degradation, including the euhemerobic and polyhemerobic (Hemeroby) categories, Cultural assisted system and Semi-transformed system (Naturalness), and Extreme degradation to poor-fair quality (QBR). The presence of B. borneoensis in the research location can adapt to the poor quality of riparian habitat. However, the density decreases significantly at higher salinity.
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Mansouri, Ismail, Wafae Squalli, Abdelbari El Agy, Abderahim El-Hassani, Lahcen El Ghadraoui i Mohamed Dakki. "Comparison of Nesting Features and Breeding Success of Turtle Dove Streptopelia turtur between Orchards and Riparian Habitats". International Journal of Zoology 2021 (8.04.2021): 1–7. http://dx.doi.org/10.1155/2021/5566398.
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The European turtle dove Streptopelia turtur breeds in both farmlands and woodlands, and it is important to explore the difference in breeding ecology of this threatened game in these two ecosystem types. This study, carried out during four years (2015–2018), compares nesting features of this species and its breeding success between apple orchards and riparian vegetation in Midelt Province, Morocco. The main result revealed that the nest placement, including nesting-tree height and nest height, is similar between orchards and riparian trees. However, the nest dimensions (big and small diameters) were larger in orchards. Correlations were variable among nest placement parameters and dimensions. On the contrary, in four breeding seasons, where 566 nests were monitored (467 in orchards and 99 in riparian sites), the average breeding success was different (57% of chicks in apple farms and 53% in riparian vegetation). Moreover, in apple orchards, clutches’ failure is due to both predation (18.89% of eggs and 10.54% of chicks) and temperature lowering (5.03% of unhatched eggs and 5.49% of dead chicks), while in riparian vegetation, the loss is due to nest desertion (21.33% of clutches) and mostly predation (33.16% of clutches).
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Prastiyo, Yulius Budi, Kaswanto i Hadi Susilo Arifin. "ANALISIS EKOLOGI LANSKAP AGROFORESTRI PADA RIPARIAN SUNGAI CILIWUNG DI KOTA BOGOR". Jurnal Lanskap Indonesia 9, nr 2 (1.01.2018): 81–90. http://dx.doi.org/10.29244/jli.v9i2.16964.
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Ciliwung River flows from Bogor district, Bogor city, Depok, to Jakarta. The river faces many problems, especially settlement occupation on its riparian zones. The problem has damaged its natural ecological structures and the agroforestry practices such as mixed gardens, forest gardens, and pekarangan (home garden) in riparian landscape. This research objective is to analyze the structure, function, and dynamics of riparian agroforestry landscape of Ciliwung River in Bogor City. The landscape ecological index analysis approach is used to quantify the structure, function, and dynamics of the landscape. The existing land use in Ciliwung riparian in Bogor City has been dominated by the constructed land, such as settlements and housing. Those land use can be found with an area of 33.78 ha (60.50%) in the upper segment and 34.65 ha (56.54%) in the under segment. Meanwhile, in the middle segment is still dominated by the agroforestry area, such as forest gardens, mixed garden, and pekarangan with an area of 17.59 ha (55.23%). The function of these structures is as the core habitat and movement media of material, energy, animal, and human. The spatial dynamics of the Ciliwung riparian landscape in Bogor City revealed that the more patches of settlements and housing on a landscape, the more patches of pekarangan on the landscape.Keywords: Agroforestry landscape, Ciliwung River, landscape ecology, riparian areas
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Li, Xiaolong, Shanze Li, Yawei Xie, Zehui Wei i Zilong Li. "What Drives the Morphological Traits of Stress-Tolerant Plant Cynodon dactylon in a Riparian Zone of the Three Gorges Reservoir, China". Water 15, nr 18 (6.09.2023): 3183. http://dx.doi.org/10.3390/w15183183.
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The cyclical process of water storage and recession in the regular operation of the Three Gorges Reservoir creates a unique habitat stress that alters the structural and functional attributes of vegetation ecology within the riparian zone. The stress-tolerant plant Cynodon dactylon (L.) Pers is the dominant plant species in the riparian zone of the Three Gorges Reservoir. In this study, the riparian zone of the Daning River, a tributary located in the center of the Three Gorges Reservoir, was selected as our study area. To identify the drivers of the morphological traits of C. dactylon in the riparian zone of Daning River, we examined plant biomass and plant characteristics across different elevation gradients, with reference to abiotic factors to determine the distribution patterns of plant morphological traits. Results indicated that in the two main soil types of the riparian zone, plant biomass showed a consistent trend along the elevation gradient, with a “middle-height expansion” pattern; biomass increased and then decreased with rising water levels. Plant biomass positively correlated with soil total nitrogen and negatively correlated with soil pH, electrical conductivity, and total phosphorus. C. dactylon adapted to prolonged flooding in the riparian zone by having a significant negative correlation between plant height and erect stem length with soil moisture content to facilitate root respiration.