Use of Remote Sensing to Assess Changes in Wetland Plant Communities Over An 18-Year Period: A Case Study from the Bear River Migratory Bird Refuge, Great Salt Lake, Utah

Vanderlinder, Melina Santos; Neale, Christopher M. U.; Rosenberg, David E.; Kettenring, Karin M.

doi:10.3398/064.074.0104

Cited by 10 publications

(8 citation statements)

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“…Given the drastically different environmental conditions in this landscape (e.g., low summer precipitation, frequent drought conditions, and extreme high summer temperatures) compared with the regions mentioned above, we might have expected that Phragmites expansion rates would be much slower compared to other regions of North America. On the other hand, following the 1990s retreat of the Great Salt Lake after historic flooding in the 1980s, many wetlands were left completely unvegetated, with high salinity conditions, and increasingly eutrophied conditions from nearby development along the urbanizing Wasatch Front (Vanderlinder et al 2013). Such highly disturbed conditions (particularly the high light levels preferred by Phragmites seeds and seedlings; Kettenring et al 2015) likely favored rapid Phragmites spread rates in areas still recovering from the flooding (Kettenring et al 2012).…”

Section: Phragmites Rate Of Expansion and Potential Driversmentioning

confidence: 98%

“…Fish and Wildlife Service's Bear River Migratory Bird Life on the edge: reproductive mode Refuge (BRMBR), which is located at the terminus of the Bear River on the northeastern edge of the Great Salt Lake. Non-native Phragmites first invaded Great Salt Lake wetlands (including the BRMBR) in the early 1990s, after the retreat of the lake following historic flooding for almost 6 years starting in 1983 (Olson et al 2004;Kulmatiski et al 2011;Kettenring et al 2012;Vanderlinder et al 2013). The [30,000 ha BRMBR consists of 26 wetland units, constructed following the 1980s flooding .…”

Section: Site Descriptionmentioning

confidence: 98%

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Life on the edge: reproductive mode and rate of invasive Phragmites australis patch expansion

et al. 2016

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The dynamics of plant invasions from initial colonization through patch expansion are driven in part by mode of reproduction, i.e., sexual (seed) and asexual (clonal fragments and expansion) means. Expansion of existing patches-both rate and mode of spread into a matrix of varying conditions-is important for predicting potential invader impacts. In this study, we used fine-scale genetic assessments and remote sensing to describe both the rate and mode of expansion for 20 Phragmites australis patches in flooded and unflooded wetland units on the Great Salt Lake, UT. We found that the majority of Phragmites patch expansion occurred via clonal spread but we also documented instances of (potentially episodic) seedling recruitment. The mode of patch expansion, inferred from patch edge genet richness, was unrelated to flooding in the wetland unit in the preceding growing season. The rate of Phragmites patch expansion varied from 0.09 to 0.35 year -1 and was unrelated to the mode of spread. In six patches monitored across two years, monoclonal patches stayed monoclonal, whereas patches with higher genet richness had a marked increase in diversity in the second year. The findings of the present study suggest how this partially clonal species can exploit the benefits of both sexual (i.e., genetic recombination, widespread dispersal, colonization of new areas) and asexual reproduction (i.e., stability of established clones suited to local environmental conditions) to become one of the most successful wetland plant invaders. To control this species, both forms of reproduction need to be fully addressed through targeted management actions.

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Section: Phragmites Rate Of Expansion and Potential Driversmentioning

confidence: 98%

Section: Site Descriptionmentioning

confidence: 98%

Life on the edge: reproductive mode and rate of invasive Phragmites australis patch expansion

et al. 2016

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“…This standpoint is generally taken if the process threatens the existence of protected habitats or the vegetation involves invasive species. This view is represented by Szostak et al, 2 Szostak et al, 3 Vanderlinder et al, 7 and others. In other places, secondary succession is recognized as having a highly positive impact on climate and biodiversity and as an important reservoir of carbon.…”

Section: Introductionmentioning

confidence: 89%

“…The succession process is currently the subject of a large number of research projects all over the world, for example in Europe, [1][2][3] North America, [4][5][6][7][8][9] South America, [10][11][12] and also in Asia. 13 The reason behind the interest in this topic is undoubtedly connected with its significance, which can be seen from three different perspectives.…”

Section: Introductionmentioning

confidence: 99%

“…8,9,11 In most cases, however, the importance of secondary succession is simply explained by the large size of the terrain encompassed, land use and land cover changes, and the resultant need to assess its influence on ecosystem functions and services. 1,[4][5][6]10,12,13 Regardless of the reason, studies of secondary succession focus mainly on identifying the places, in which the succession occurs, estimating the size of this area 3,7 and describing the stages of the process, 1,[4][5][6][9][10][11][12][13] and rarely on determining other characteristics such as the stand age or species richness. 8 To the authors' knowledge, few research projects have investigated the subject of the differentiation of succession species.…”

Section: Introductionmentioning

confidence: 99%

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Mapping secondary succession species in agricultural landscape with the use of hyperspectral and airborne laser scanning data

Radecka

Michalska-Hejduk

Osińska-Skotak

et al. 2019

J. Appl. Rem. Sens.

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Secondary succession is a process that is often observed taking place in former agricultural ecosystems. Its characteristics are especially important in protected areas, for the purposes of monitoring and protective measures. Effective mapping of succession is facilitated by the development of automated methodologies based on remote sensing data, which are capable of complementing traditional field research. The objective of this work is to determine whether the classification of high-resolution hyperspectral and light detection and ranging (LiDAR) data with the use of the random forest algorithm enables us to produce an accurate succession species map. First, feature extraction techniques are applied to 1-m hyperspectral images and a ∼7 point∕m 2 dense point cloud. Minimum noise fraction layers and vegetation indices are calculated from the hyperspectral data and geometry related indices from the LiDAR data. Finally, the recursive feature elimination algorithm is applied to the combined dataset and the reference polygons to select the optimal set of features for subsequent classification. The results indicate that the proposed methodology has the potential to be used operationally. The final classification product is characterized by a relatively high Cohen's kappa value of 0.68, with single species classified with various accuracies, expressed by F1 scores ranging from 0.45 to 0.87. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Systems modeling to improve the hydro‐ecological performance of diked wetlands

Alminagorta

Rosenberg

Kettenring

2016

Water Resources Research

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Water scarcity and invasive vegetation threaten arid‐region wetlands and wetland managers seek ways to enhance wetland ecosystem services with limited water, labor, and financial resources. While prior systems modeling efforts have focused on water management to improve flow‐based ecosystem and habitat objectives, here we consider water allocation and invasive vegetation management that jointly target the concurrent hydrologic and vegetation habitat needs of priority wetland bird species. We formulate a composite weighted usable area for wetlands (WU) objective function that represents the wetland surface area that provides suitable water level and vegetation cover conditions for priority bird species. Maximizing the WU is subject to constraints such as water balance, hydraulic infrastructure capacity, invasive vegetation growth and control, and a limited financial budget to control vegetation. We apply the model at the Bear River Migratory Bird Refuge on the Great Salt Lake, Utah, compare model‐recommended management actions to past Refuge water and vegetation control activities, and find that managers can almost double the area of suitable habitat by more dynamically managing water levels and managing invasive vegetation in August at the beginning of the window for control operations. Scenario and sensitivity analyses show the importance to jointly consider hydrology and vegetation system components rather than only the hydrological component.

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Use of Remote Sensing to Assess Changes in Wetland Plant Communities Over An 18-Year Period: A Case Study from the Bear River Migratory Bird Refuge, Great Salt Lake, Utah

Cited by 10 publications

References 39 publications

Life on the edge: reproductive mode and rate of invasive Phragmites australis patch expansion

Life on the edge: reproductive mode and rate of invasive Phragmites australis patch expansion

Mapping secondary succession species in agricultural landscape with the use of hyperspectral and airborne laser scanning data

Systems modeling to improve the hydro‐ecological performance of diked wetlands

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