Exotic Plant Colonization and Occupancy Within Riparian Areas of the Interior Columbia River and Upper Missouri River Basins, USA

Al‐Chokhachy, Robert; Ray, Andrew M.; Roper, Brett B.; Archer, Eric

doi:10.1007/s13157-013-0399-8

Cited by 15 publications

(15 citation statements)

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“…This work identified important drivers of habitat degradation, but did not quantify the biotic response to such disturbances. Efforts to assess biotic response have primarily focused on the vegetation component of the PIBO dataset, examining the impact of grazing on plants (Coles-Ritchie, Roberts, Kershner, & Henderson, 2007), of plants on stream structure (Hough-Snee, Roper, Wheaton, & Lokteff, 2015; Roper, Jarvis, & Kershner, 2007), and the physical site factors that predict plant invasion (Al-Chokhachy, Ray, Roper, & Archer, 2013; Menuz & Kettenring, 2013). These studies are a solid foundation for understanding the health of these sites, but as a primary prey source for the imperiled fishes PIBO was designed to monitor, an understanding of the macroinvertebrates of the sites is key to achieving management goals.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic diversity efficiently and accurately prioritizes the conservation of aquatic macroinvertebrate communities

Weglarz

Saunders

Wagenen

et al. 2019

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131. Land degradation is a leading cause of biodiversity loss yet its consequences on freshwater 14 ecosystems are poorly understood, exacerbating difficulties with assessing ecosystem quality 15 and the effectiveness of restoration practices. 16 2. Many monitoring programs rely on macroinvertebrates to assess the biotic effects of degra-17 dation and/or restoration and management actions on freshwater ecosystems. The ratio of 18 Observed (O) to Expected (E) macroinvertebrate taxa at a given site-O/E-is often used 19 for this purpose, despite the amount of modeling and data required to generate expectations 20 and difficulties quantitatively assessing the degree of degradation at a site.21 3. Despite widespread use in academic biology, phylogenetic diversity is rarely applied in man-22 agement, regardless of empirical correlations between phylogenetic diversity and management 23 targets such as ecosystem structure and function.24 4. We use macroinvertebrate data from 1,400 watersheds to evaluate the potential for phyloge-25 netic metrics to inform evaluations of management practices. These data have been collected 26 since 1998, and have been used to determine the effectiveness of conservation management for 27 the maintenance and restoration of riparian and aquatic systems.28 5. Phylogenetic diversity detected degradation as effectively as O/E, despite not having baseline 29 'expectation' data. Site disturbance, road density, and broader environmental drivers such as 30 mean annual temperature strongly predicted site phylogenetic diversity, providing concrete 31 management objectives to increase site health. 32 6. Synthesis and applications. Management efforts targeted solely at taxonomic metrics, such as 33 O/E, have been successfully used to manage sites. We show here that phylogenetic diversity 34 metrics can support such efforts by providing additional information about the kind of species 35 at sites. Given the ease with which such approaches can be applied, we call on others to use 36 them to supplement existing prioritization schemes.37 38

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Section: Discussionmentioning

confidence: 99%

Phylogenetic diversity efficiently and accurately prioritizes the conservation of aquatic macroinvertebrate communities

Weglarz

Saunders

Wagenen

et al. 2019

Preprint

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“…Many invasive species disperse along road corridors (Forman and Alexander ), and the proximity of sites to roads may directly influence the potential for a site to be invaded (Al‐Chokhachy et al. ). Many of our sites near roads do have higher degrees of invasion.…”

Section: Discussionmentioning

confidence: 99%

Using structural equation modeling to link human activities to wetland ecological integrity

et al. 2016

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Abstract. The integrity of wetlands is of global concern. A common approach to evaluating ecological integrity involves bioassessment procedures that quantify the degree to which communities deviate from historical norms. While helpful, bioassessment provides little information about how altered conditions connect to community response. More detailed information is needed for conservation and restoration. We have illustrated an approach to addressing this challenge using structural equation modeling (SEM) and long-term monitoring data from Rocky Mountain National Park (RMNP). Wetlands in RMNP are threatened by a complex history of anthropogenic disturbance including direct alteration of hydrologic regimes; elimination of elk, wolves, and grizzly bears; reintroduction of elk (absent their primary predators); and the extirpation of beaver. More recently, nonnative moose were introduced to the region and have expanded into the park. Bioassessment suggests that up to half of the park's wetlands are not in reference condition. We developed and evaluated a general hypothesis about how human alterations influence wetland integrity and then develop a specific model using RMNP wetlands. Bioassessment revealed three bioindicators that appear to be highly sensitive to human disturbance (HD): (1) conservatism, (2) degree of invasion, and (3) cover of native forbs. SEM analyses suggest several ways human activities have impacted wetland integrity and the landscape of RMNP. First, degradation is highest where the combined effects of all types of direct HD have been the greatest (i.e., there is a general, overall effect). Second, specific HDs appear to create a "mixed-bag" of complex indirect effects, including reduced invasion and increased conservatism, but also reduced native forb cover. Some of these effects are associated with alterations to hydrologic regimes, while others are associated with altered shrub production. Third, landscape features created by historical beaver activity continue to influence wetland integrity years after beavers have abandoned sites via persistent landforms and reduced biomass of tall shrubs. Our model provides a system-level perspective on wetland integrity and provides a context for future evaluations and investigations. It also suggests scientifically supported natural resource management strategies that can assist in the National Park Service mission of maintaining or, when indicated, restoring ecological integrity "unimpaired for future generations."

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“…Nonnative brook (Salvelinus fontinalis), brown (Salmo trutta), and rainbow trout can hinder and outcompete native cutthroats (Van Kirk et al 2009). Leafy spurge (Euphorbia esula L.), purple loosestrife (Lythrum salicaria), cheatgrass (Bromus tectorum L.), and Canada thistle (Cirsium arvense) are particularly problematic in riparian areas, where they displace native species (Al-Chokhachy et al 2013b;Poff et al 2011).…”

Section: National Forestmentioning

confidence: 99%

Climate change vulnerability assessment of aquatic and terrestrial ecosystems in the U.S. Forest Service Rocky Mountain Region

Rice¹,

Joyce²,

Regan³

et al. 2018

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Exotic Plant Colonization and Occupancy Within Riparian Areas of the Interior Columbia River and Upper Missouri River Basins, USA

Cited by 15 publications

References 100 publications

Phylogenetic diversity efficiently and accurately prioritizes the conservation of aquatic macroinvertebrate communities

Phylogenetic diversity efficiently and accurately prioritizes the conservation of aquatic macroinvertebrate communities

Using structural equation modeling to link human activities to wetland ecological integrity

Climate change vulnerability assessment of aquatic and terrestrial ecosystems in the U.S. Forest Service Rocky Mountain Region

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