Relevant bibliographies by topics / Wetlands. Wetland ecology. Aerial photography

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Academic literature on the topic 'Wetlands. Wetland ecology. Aerial photography'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Wetlands. Wetland ecology. Aerial photography"

1

Fensham, R. J., R. J. Fairfax, D. Pocknee, and J. Kelley. "Vegetation patterns in permanent spring wetlands in arid Australia." Australian Journal of Botany 52, no. 6 (2004): 719. http://dx.doi.org/10.1071/bt04043.

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A transect-based quadrat survey was conducted within 11 spring wetlands fed by permanent groundwater flows from the Great Artesian Basin at Elizabeth Springs in western Queensland. Flow patterns within individual wetlands change with sedimentation associated with mound building, siltation of abandoned drains and changes in aquifer pressure associated with artificial extraction from bores. The pattern of floristic groups for the wetland quadrats was poorly related to soil texture, water pH, slope and topographic position. Patterns were most clearly related to wetland age as determined from aerial photography, with a clear successional sequence from mono-specific stands of Cyperus laevigatus on newly formed wetland areas to more diverse wetland assemblages. However, evidence from other Great Artesian Basin springs suggests that succession can also result in reduced species richness where the palatable tall reed Phragmites australis develops mono-specific stands.
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2

Johnston, RM, and MM Barson. "Remote sensing of Australian wetlands: An evaluation of Landsat TM data for inventory and classification." Marine and Freshwater Research 44, no. 2 (1993): 235. http://dx.doi.org/10.1071/mf9930235.

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This study aimed to develop simple remote-sensing techniques suitable for mapping and monitoring wetlands, using Landsat TM imagery of inland wetland sites in Victoria and New South Wales. A range of classification methods was examined in attempts to map the location and extent of wetlands and their vegetation types. Multi-temporal imagery (winter/spring and summer) was used to display seasonal variability in water regime and vegetation status. Simple density slicing of the mid-infrared band (TM5) from imagery taken during wet conditions was useful for mapping the location and extent of inundated areas. None of the classification methods tested reproduced field maps of dominant vegetation species; however, density slicing of multi-temporal imagery produced classes based on seasonal variation in water regime and vegetation status that are useful for reconnaissance mapping and for examining variability in previously mapped units. Satellite imagery is unlikely to replace aerial photography for detailed mapping of wetland vegetation types, particularly where ecological gradients are steep, as in many riverine systems. However, it has much to offer in monitoring changes in water regime and in reconnaissance mapping at regional scales.
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3

Zogg, Gregory P., and Burton V. Barnes. "Ecological classification and analysis of wetland ecosystems, northern Lower Michigan, U.S.A." Canadian Journal of Forest Research 25, no. 11 (November 1, 1995): 1865–75. http://dx.doi.org/10.1139/x95-201.

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We describe an ecological, multifactor approach to wetland classification in which ecosystem types are identified on the basis of the simultaneous integration of physiography, climate, hydrology, soil, and vegetation. Aerial photographs and field reconnaissance were used to characterize the diversity of wetlands of the 4000-ha University of Michigan Biological Station, northern Lower Michigan. Twenty-eight wetland units, including nutrient-rich swamps, ombrotrophic bogs, and many intermediate types, were identified. Eight wetland ecosystems, composing 79% of the total wetland area, were sampled extensively and classified primarily on the basis of the major glacial landforms and physiographic features of the region. Canonical variates analysis was used to evaluate the distinctness of these physiographically determined units in relation to various biotic and abiotic variables. Wetland types were poorly discriminated by canonical variates analysis of overstory composition data; better separation among types was achieved using ground-flora vegetation, hydrology, or soil characteristics. To demonstrate the utility of the multifactor approach to applications in wetland ecology, vegetation–environment relationships were examined using canonical correspondence analysis. Patterns of ground-flora community composition across all ecosystems were related to substrate characteristics, primarily organic matter composition, in addition to water chemistry and light. The results suggest that a multifactor approach, within a landscape framework, is useful in distinguishing wetlands at local scales, particularly where differences in overstory vegetation among ecosystems tend to be masked by human-caused disturbance. However, the landform-mediated differences in various wetland characteristics that we observed argue for a consideration of landscape-level physiography in classification and management even at broader scales.
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4

Berg, Edward E., Kacy McDonnell Hillman, Roman Dial, and Allana DeRuwe. "Recent woody invasion of wetlands on the Kenai Peninsula Lowlands, south-central Alaska: a major regime shift after 18 000 years of wet Sphagnum–sedge peat recruitment." Canadian Journal of Forest Research 39, no. 11 (November 2009): 2033–46. http://dx.doi.org/10.1139/x09-121.

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We document accelerating invasion of woody vegetation into wetlands on the western Kenai Peninsula lowlands. Historical aerial photography for 11 wetland sites showed that herbaceous area shrank 6.2%/decade from 1951 to 1968, and 11.1%/decade from 1968 to 1996. Corresponding rates for converting herbaceous area to shrubland were 11.5% and 13.7%/decade, respectively, and, for converting nonforest to forest, were 7.8% and 8.3%/decade, respectively. Black spruce ( Picea mariana (Mill.) BSP) forests on three wetland perimeters established since the Little Ice Age concluded in the 1850s. Dwarf birch shrubs at three wetland sites showed median apparent tree-ring age of 13 years, indicating recent shrub colonization at these sites. Peat cores at 24 wetland sites (basal peat ages 1840 – 18 740 calibrated years before present) indicated that these peatlands originated as wet Sphagnum –sedge fens with very little woody vegetation. Local meteorological records show a 55% decline in available water since 1968, of which one-third is due to higher summer temperatures and increased evapotranspiration and two-thirds is due to lower annual precipitation. These results suggest that wet Sphagnum–sedge fens initiating since the end of the Wisconsin glaciation began to dry in the 1850s and that this drying has greatly accelerated since the 1970s.
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5

Ocampo-Marulanda, Camilo, Yesid Carvajal-Escobar, Aceneth Perafán-Cabrera, and Lina María Restrepo-Jiménez. "Desiccation of Wetlands and Their Influence on the Regional Climate. Case Study: Ciénaga de Aguablanca, Cali, Colombia." Tropical Conservation Science 14 (January 2021): 194008292110070. http://dx.doi.org/10.1177/19400829211007075.

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The desiccation of wetlands is a process associated with the dynamics of urban growth and expansion of the agricultural frontier. This article aims to evaluate the influence of the desiccation of the Ciénaga de Aguablanca on regional climate. The periodization of the desiccation and urban growth of Cali was reconstructed under the theoretical contributions of environmental history. As complementary sources, maps, aerial photographs, and diagrams of the city were obtained from 1944 to 2020, with which the hydromorphological changes in the Ciénaga de Aguablanca were represented. Data from six hydroclimatological stations were statistically analyzed with Pettitt’s test, trend analysis, and Rclimdex. The results indicate a reduction of 99% in the area of the wetlands, from 19.2 km2 in 1944 to 0.2 km2 by 2020. Additionally, a break point was observed in 1970, preceded by the process of wetland desiccation and waterproofing of the eastern part of Cali, along with significant differences between temperature series inside and outside the urban perimeter. Another break point was detected in 1985 in the flow series, associated with the construction of the La Salvajina dam. Monthly rainfall showed a tendency to increase, but its temporal distribution was uneven, given that rainfall volume showed a tendency to increase over short times. Regional climate changes can occur at a much faster rate than global variations due to the anthropogenic actions of wetland intervention.
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6

Miyamoto, Michiru, Kunihiko Yoshino, Toshihide Nagano, Tomoyasu Ishida, and Yohei Sato. "Use of balloon aerial photography for classification of Kushiro wetland vegetation, northeastern Japan." Wetlands 24, no. 3 (September 2004): 701–10. http://dx.doi.org/10.1672/0277-5212(2004)024[0701:uobapf]2.0.co;2.

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7

Harvey, Kylie R., and Greg J. E. Hill. "Mapping the nesting habitats of saltwater crocodiles (Crocodylus porosus) in Melacca Swamp and the Adelaide River wetlands, Northern Territory: an approach using remote sensing and GIS." Wildlife Research 30, no. 4 (2003): 365. http://dx.doi.org/10.1071/wr00008.

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The utility of integrating remotely sensed data and other spatial information in a geographical information system (GIS) to model habitat suitability for nesting by saltwater crocodiles (Crocodylus porosus) was investigated in this study. The study areas, Melacca Swamp and the Adelaide River wetlands, are located 50 km east of Darwin, Northern Territory, and encompass areas of suitable nesting habitat for C. porosus. Melacca Swamp is a highly productive nesting area and is managed as a conservation reserve to protect its nesting habitat. Landsat TM, SPOT satellite imagery and large-scale colour aerial photography were evaluated for their utility in mapping habitats preferred for nesting by C. porosus within Melacca Swamp. Satellite imagery was capable of identifying generalised habitat classes used for nesting (e.g. open swamp with emergent trees). However, it was only with aerial photography that habitats could be discerned (e.g. sedges with scattered Melaleuca trees). Spatial information derived from satellite imagery and other sources was integrated in a GIS to model potentially suitable nesting habitat along the Adelaide River. This methodology effectively identified known preferred nesting areas of C. porosus on the basis of the analysis of environmental parameters (i.e. distance to water, vegetation type) that have an influence on selection of nesting habitat. The findings of this research demonstrate the utility of remote sensing and GIS for mapping nesting habitat of C. porosus at a range of scales and provide guidelines for application of the approaches used at the regional or State level.
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8

Prisley, Stephen P., Jeffery A. Turner, Mark J. Brown, Erik Schilling, and Samuel G. Lambert. "Uncertainty of Forested Wetland Maps Derived from Aerial Photography." Photogrammetric Engineering & Remote Sensing 86, no. 10 (October 1, 2020): 609–17. http://dx.doi.org/10.14358/pers.86.10.609.

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Forested wetlands (FWs) are economically and environmentally important, so monitoring of change is done using remote sensing by several U.S. federal programs. To better understand classification and delineation uncertainties in FW maps, we assessed agreement between National Wetlands Inventory maps based on aerial photography and field determinations at over 16 000 Forest Inventory and Analysis plots. Analyses included evaluation of temporal differences and spatial uncertainty in plot locations and wetland boundaries. User's accuracy for the wetlands map was 90% for FW and 68% for nonforested wetlands. High levels of false negatives were observed, with less than 40% of field-identified wetland plots mapped as such. Epsilon band analysis indicated that if delineation of FW boundaries in the southeastern U.S. met the data quality standards (5 meters), then the area within uncertainty bounds accounts for 15% to 30% of estimated FW area.
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9

O'Callaghan, M. "The ecology of the False Bay estuarine environments, Cape, South Africa. 1. The coastal vegetation." Bothalia 20, no. 1 (October 18, 1990): 105–11. http://dx.doi.org/10.4102/abc.v20i1.903.

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The vegetation in and around eleven estuaries flowing into False Bay was surveyed during 1980 and 1981. Use was made of colour aerial photographs and a combination of dominance and phytosocioiogical techniques. Of the communities established, three are aquatic and four are described as emergent or wetlands. Of the terrestrial communities, five are described as fynbos and four occur on coastal sands. One community consists solely of alien plants. The communities thus classified generally compare well with those discussed by other workers in the area. However, differences due to the destruction and disturbance of the vegetation are commented upon.
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10

McDougall, Keith L. "Aerial photographic interpretation of vegetation changes on the Bogong High Plains, Victoria, between 1936 and 1980." Australian Journal of Botany 51, no. 3 (2003): 251. http://dx.doi.org/10.1071/bt02079.

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The vegetation of two areas on the Bogong High Plains in 1936 was compared with that in 1980 by using a point sampling technique on aerial photographs. Between 1936 and 1980, the cover of closed heathland, wetland and trees (Eucalyptus pauciflora) increased but the cover of grassland decreased. No change was detected overall in the cover of open heathland. The increase in closed heathland was not due to direct conversion of grassland areas. Most change was from grassland to open heathland and from open heathland to closed heathland vegetation. The increase in wetland vegetation may have been a response to the reduction in grazing pressure since the 1930s. The greater cover of trees in 1980 was due to expansion of existing patches rather than the establishment of new patches. This may have been attributable in part to regeneration following bushfires in 1926 and 1939. The possible role of higher mean temperatures associated with global warming in the increased tree and shrub cover is worthy of further investigation.
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Books on the topic "Wetlands. Wetland ecology. Aerial photography"

1

United States. Bureau of Land Management. Denver Service Center., ed. The use of aerial photography to manage riparian-wetland areas. Denver, Colo: U.S. Department of the Interior, Bureau of Land Management, Service Center, 1994.

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2

Clemmer, Pam. The use of aerial photography to manage riparian-wetland areas. 2nd ed. Denver, Colo. (P.O. Box 25047, Denver 80225-0047): U.S. Department of the Interior, Bureau of Land Management, Service Center, 2001.

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Clemmer, Pam. The use of aerial photography to manage riparian-wetland areas. 2nd ed. Denver, Colo. (P.O. Box 25047, Denver 80225-0047): U.S. Dept. of the Interior, Bureau of Land Management, National Science and Technology Center, 2001.

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4

Clemmer, Pam. The use of aerial photography to manage riparian-wetland areas: Riparian area management. Denver, Colo: U.S. Department of the Interior, Bureau of Land Management, Service Center, 1994.

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5

Using aerial photographs to assess proper functioning condition of riparian-wetland areas. Denver, CO (P.O. Box 25047, Denver 80225-0047): U.S. Dept. of the Interior, Bureau of Land Management, National Applied Resource Sciences Center, 1999.

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