Multispecies and Watershed Approaches to Freshwater Fish Conservation最新文献

{"title":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","authors":"","doi":"10.47886/9781934874578.ch5","DOIUrl":"https://doi.org/10.47886/9781934874578.ch5","url":null,"abstract":"Abstract.—Systematic conservation planning tools offer powerful and flexible means for addressing the protection of biodiversity in freshwater systems. Tools such as the software Zonation can be used to prioritize streams for protection, restoration, and management of aquatic resources. The flexible nature of these tools allow analyses to be tailored to specific objectives but also introduces uncertainty regarding the effects of selected input options on the rankings of stream segments and the representation of fish species within prioritized streams. The objective of our research was to evaluate the effectiveness of several species distribution modeling techniques (generalized additive models, multivariate adaptive regression splines, boosted regression trees, and random forest models, including an ensemble based on these techniques) for characterizing distributions of fish communities and to identify the influence of different prioritization options of Zonation conservation planning software within five input classes (species occurrence data, removal rule, species weighting, connectivity, and protected area masking) on both the resulting stream segment rankings and the representation of species within priority streams. All combinations of input options were compared based on the correlation and congruence of stream rankings and the mean richness of species, minimum level of species representation, and representation of rare species within streams across priority levels. Of the distribution modeling types we evaluated, boosted regression trees performed the best, followed closely by random forest models. The use of an ensemble approach allowed for the largest number of species with robust predicted distributions. Our results also suggested that protected area masking had the largest effects on conservation priority results, followed by choice of removal rule, while species occurrence data type had limited impacts. The information contained in this chapter is meant to aid planners in understanding how their selection of conservation planning inputs is likely to impact results.","PeriodicalId":121705,"journal":{"name":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115655868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","authors":"","doi":"10.47886/9781934874578.ch11","DOIUrl":"https://doi.org/10.47886/9781934874578.ch11","url":null,"abstract":"Abstract.—Alteration of environmental flows is a growing concern within the conservation community as human demand for water increases. Alteration of the natural flow regime of rivers and streams in Texas has degraded aquatic and riparian habitats and contributed to declines in native fishes and other aquatic taxa. To inform identification and implementation of voluntary environmental flow protection and restoration strategies, conservation partners initiated development of the Environmental Flow Information Toolkit. The Environmental Flow Information Toolkit is being developed as a Web-based geospatial platform that will provide data and information on water use, hydrologic alteration, and environmental flow targets to meet conservation objectives and offer other data layers supported by end-user recommendations and feedback. The Environmental Flow Information Toolkit is expected to increase efficiencies and effectiveness of environmental flow conservation efforts, providing a valuable decision support tool for resource managers, water providers, and conservation organizations facing the challenges of meeting human water demand while conserving Texas’ rich natural heritage.","PeriodicalId":121705,"journal":{"name":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130763529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","authors":"","doi":"10.47886/9781934874578.ch24","DOIUrl":"https://doi.org/10.47886/9781934874578.ch24","url":null,"abstract":"Abstract—The Weber River is primarily known as a blue-ribbon Brown Trout Salmo trutta fishery; however, this river also supports populations of two jeopardized fishes, Bonneville Cutthroat Trout Oncorhynchus clarkii utah and Bluehead Sucker Catostomus discobolus. At least one population of Bonneville Cutthroat Trout in the Weber River provides an important and popular local fishery and expresses a fluvial life history where main-stem individuals grow large (300–500 mm total length) and migrate into small tributaries for spawning. Bluehead Suckers currently occur in the main stem of the Weber River, where they travel distances of 20 km between spawning and overwintering habitats. The habitat for both species has been fragmented by more than 300 barriers composed of irrigation diversions, road crossings, and utility stream crossings. Beginning in 2010, the Utah Division of Wildlife Resources and Trout Unlimited began undertaking barrier removal for native fish as a priority conservation action. Initially, the effort to reconnect habitat was slow and the lack of relationships with stakeholders such as water users, government agencies, private landowners, and utility companies was hampering progress with habitat reconnection. New barriers were being built at a faster rate than barriers were being removed. To build these relationships, a steering committee was formed to secure a small grant, hire a consulting firm, organize stakeholder meetings to identify broad stakeholder priorities, and write a watershed plan that ultimately identified Bonneville Cutthroat Trout and Bluehead Sucker as priority conservation targets. The watershed plan and subsequent stakeholder meetings developed a framework for the Weber River Partnership. The partnership holds an annual symposium where larger watershed issues are discussed. The symposium also provides a platform where all stakeholders can understand the activities occurring throughout the watershed and where there are opportunities to collaborate. The Weber River Partnership has provided a forum where fisheries managers have told the story of Bonneville Cutthroat Trout and Bluehead Sucker and the importance of habitat connectivity. Through collaborative relationships with nontraditional partners, the relevance of fisheries in the Weber River has been realized. Further relevance in the watershed is evidenced by the development of a wide range of on-the-ground actions. Fish passage has been re-established at three main-stem and four tributary barriers. Additional projects are in various stages of development, including a large fish ladder that will be built as part of a Federal Energy Regulatory Commission relicensing project at a small hydroelectric dam, and we continue to be contacted by water users with interest in developing irrigation diversion reconstruction projects that incorporate fish passage.","PeriodicalId":121705,"journal":{"name":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127817322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","authors":"","doi":"10.47886/9781934874578.ch2","DOIUrl":"https://doi.org/10.47886/9781934874578.ch2","url":null,"abstract":"Abstract.—Efficient conservation can require making strategic decisions across large landscapes. For example, two fish habitat partnerships—the Desert Fish Habitat Partnership and the Western Native Trout Initiative (WNTI)—fund conservation and restoration projects across the western United States. The Desert Fish Habitat Partnership alone serves 11 states and nearly 180 native fish species, and the Western Native Trout Initiative covers 21 salmonid species across 12 western states. Because of the large landscapes they represent, the partnerships are using multispecies aquatic assessments developed for specific river basins to aid in conservation delivery. These assessments yield a conservation value for every catchment in a basin based on known and modeled native fish distributions (including salmonids), riverine connectivity, and threats to aquatic habitats. The conservation values are scaled between 0 (low) and 1 (high) and have been used to evaluate the landscape context of conservation projects submitted for funding through the National Fish Habitat Partnership. While assessments are complete for some basins (e.g., upper and lower Colorado basins, upper Rio Grande basin), the partnerships are currently working with additional partners to fund aquatic assessments in new geographies (e.g., Bonneville and Lahontan basins). Multispecies assessments are used in conjunction with the knowledge of field biologists to inform on-the-ground conservation across large landscapes and make conservation delivery more efficient for the many imperiled native fishes in the western United States.","PeriodicalId":121705,"journal":{"name":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121528882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","authors":"","doi":"10.47886/9781934874578.fmatter","DOIUrl":"https://doi.org/10.47886/9781934874578.fmatter","url":null,"abstract":"","PeriodicalId":121705,"journal":{"name":"Multispecies and Watershed Approaches to Freshwater Fish Conservation","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121535945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}