California Fish and Wildlife Journal最新文献_第2页

Human dimensions of angler nonresponse in California’s recreational steelhead fishing report card program 加利福尼亚州休闲钢鳟鱼垂钓报告卡计划中垂钓者不回应的人文因素

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-11-21 DOI: 10.51492/cfwj.109.11

Vanessa M. Gusman Costa, Colby L. Hause

{"title":"Human dimensions of angler nonresponse in California’s recreational steelhead fishing report card program","authors":"Vanessa M. Gusman Costa, Colby L. Hause","doi":"10.51492/cfwj.109.11","DOIUrl":"https://doi.org/10.51492/cfwj.109.11","url":null,"abstract":"Angler demographics and behaviors have a significant impact on recreational fishery-dependent data, and recently, human dimensions have become more widely recognized as an important part of fisheries management. California’s steelhead (Oncorhynchus mykiss) report card program has served to track recreational fishing effort and catch each calendar year for management purposes through angler self-reporting. However, angler report card return rates are consistently low, and there has been no recent effort to investigate angler attributes that may be contributing to nonresponse. This study evaluated trends in angler demographics as they relate to annual steelhead report card return rates as well as online reporting rates across the 2012–2019 study period. The study also assessed whether specific demographic or behavioral characteristics may affect the likelihood of anglers returning their report cards. Older, more avid anglers were found to have a greater likelihood of reporting in general. Motivations or deterrents for response vs. nonresponse could not be identified due to data limitations and should be the subject of future research.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-fire survival of the threatened California red-legged frog in the Sierra Nevada following the Mosquito Fire 蚊子大火后，内华达山脉受威胁的加利福尼亚红腿蛙在火灾后幸存

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-07-10 DOI: 10.51492/cfwj.109.7

J. Alvarez, Maresa Scofield, Francesca Cannizzo, Kimberly Comer, Marina L. Olson, Matt Coyle, Jeffery T. Wilcox

引用次数: 0

Ceratonova shasta infection in lower Feather River Chinook juveniles and trends in water-borne spore stages 羽河下游奇努克幼鱼的沙斯塔角蚧感染及水传播孢子阶段的趋势

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-07-10 DOI: 10.51492/cfwj.109.9

J. Foott, J. Kindopp, Katie Gordon, Alana Imrie, Kassie Hikey

{"title":"Ceratonova shasta infection in lower Feather River Chinook juveniles and trends in water-borne spore stages","authors":"J. Foott, J. Kindopp, Katie Gordon, Alana Imrie, Kassie Hikey","doi":"10.51492/cfwj.109.9","DOIUrl":"https://doi.org/10.51492/cfwj.109.9","url":null,"abstract":"We performed a five-year (2015–2020) survey of juvenile natural Chinook Salmon (Oncorhynchus tshawytscha), adult salmon carcasses, and river water from the lower Feather River to determine infection prevalence, distribution, and spore quantity of the myxozoan parasite Ceratonova shasta. Average prevalence of infection in juvenile salmon collected from the high flow channel ranged from 45–58% depending on assay method. Initial infection of fry and detection of actinospore stage in river water began in late January or early February. Overt disease occurred in March and was lethal. Infection of the gill was detected weeks ahead of intestinal infection. Water-borne spore measurement and fish infection demonstrate an infectious zone beginning at the outlet of the Thermalito Afterbay. This zone is expanding downriver past the confluence of the Yuba River. Adult carcasses produce billions of myxospores annually that move downriver over the winter. C. shasta infection is one of several factors (predation, limited rearing habitat, elevated water temperature, water withdrawal, etc.) limiting natural Chinook Salmon recruitment in the Feather River.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42003223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Delta Smelt stress responses during fish salvage at the John E. Skinner Delta Fish Protective Facility, California 在约翰·e·斯金纳三角洲鱼类保护设施，加利福尼亚打捞鱼类期间，三角洲冶炼厂的应激反应

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-07-10 DOI: 10.51492/cfwj.109.8

Virginia Afentoulis, Andrew Rockriver, Samreen Siddiqui, Lauren Damon

{"title":"Delta Smelt stress responses during fish salvage at the John E. Skinner Delta Fish Protective Facility, California","authors":"Virginia Afentoulis, Andrew Rockriver, Samreen Siddiqui, Lauren Damon","doi":"10.51492/cfwj.109.8","DOIUrl":"https://doi.org/10.51492/cfwj.109.8","url":null,"abstract":"The John E. Skinner Delta Fish Protective Facility (Skinner Fish Facility) diverts entrained fish from the State Water Project’s pumping facilities in the southern Sacramento-San Joaquin Delta (the Delta) and transports them via tanker trucks away from the immediate influence of the export pumps. During this process, the fish are counted and released back into the Delta, generally known as fish salvage. Since fish are caught and released back into the Delta, this whole process involves various points that can be stressful to fish, such as the Delta Smelt (Hypomesus transpacificus), a state and federally listed species. To understand this process and improve fish facilities function, an investigation was conducted in 2005–2006, in which we evaluated sublethal stress associated with the terminal portion of the fish salvage process. This study included fish collection, handling, transportation, and release (CHTR) away from the export facilities. Physiological stress parameters for Delta Smelt were measured in the Skinner Fish Facility. We inserted wild and cultured adult Delta Smelt into the CHTR process and later sampled for plasma cortisol, glucose, and lactate, which typically respond to acute and cumulative stress in fish. To help identify the source of overall stress response, we partitioned CHTR into three test phases: collection and handling, trucking and release, and uninterrupted CHTR. Differences in the delayed stress response between the different phases of CHTR were evaluated. Delta Smelt experienced stress in all phases of the CHTR process and in experimental handling controls indicated by higher plasma cortisol concentrations compared to their pre-experiment levels. Wild Delta Smelt experienced higher levels of cortisol response and took longer to recover than did cultured Delta Smelt.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43315190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Documentation of microplastics in the gastrointestinal tracts of terrestrial raptors in central California, USA 美国加利福尼亚州中部陆生猛禽胃肠道中微塑料的文献记录

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-07-10 DOI: 10.51492/cfwj.109.6

Alexis Leviner, J. Perrine

{"title":"Documentation of microplastics in the gastrointestinal tracts of terrestrial raptors in central California, USA","authors":"Alexis Leviner, J. Perrine","doi":"10.51492/cfwj.109.6","DOIUrl":"https://doi.org/10.51492/cfwj.109.6","url":null,"abstract":"Microplastics are persistent environmental contaminants that to date have been studied primarily in aquatic systems, but few studies have examined their prevalence or impact in terrestrial trophic networks. A recent study documented microplastics in the gastrointestinal (GI) tracts of terrestrial raptors in central Florida. We used protocols based on that study to develop a baseline dataset of microplastics in the GI tracts of terrestrial raptors on the central coast of California. In 2021, Pacific Wildlife Care, a wildlife rehabilitation center in Morro Bay, CA, provided 16 raptor carcasses: three red-tailed hawks (Buteo jamaicensis), four red-shouldered hawks (Buteo lineatus), two great horned owls (Bubo virginianus), and seven barn owls (Tyto alba). We found microplastics in the GI tracts of all 16 birds, with a mean (± SE) of 12.25 (± 1.89) microplastic particles per bird. Of the 196 microplastic particles we observed, microfibers were the most abundant (58%), followed by microbeads (34%), and microfragments (8%). However, microbeads were the most prevalent, found in all 16 birds, followed by microfibers (15 birds), and microfragments (6 birds). The chemical composition and source of these contaminants remains unclear, along with the physiological and ecological implications to raptor populations and their ecosystems, and the extent to which microplastics occur in other terrestrial species and regions in California.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48204123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing impacts of oil and ingested plastic in black skimmers from the Deepwater Horizon oil spill 评估深水地平线漏油事件中黑色撇油器中石油和摄入塑料的影响

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-07-10 DOI: 10.51492/cfwj.109.5

Erica Donnelly-Greenan, Corinne M. Gibble, J. Beck

引用次数: 0

First record of Paronatrema vaginicola (Dollfus 1937) parasite in the western coast of Baja California Sur, Mexico 在墨西哥下加利福尼亚西部海岸首次发现阴道旁腺瘤(Dollfus 1937)寄生虫

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-04-12 DOI: 10.51492/cfwj.109.2

M. R. Ochoa, Jesús Rodríguez, Roxana Inohuye, Vicente Gracia López

引用次数: 0

Impacts of the CZU Lightning Complex Fire of August 2020 on the forests of Big Basin Redwoods State Park 2020年8月CZU闪电综合体火灾对大盆地红木州立公园森林的影响

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-04-12 DOI: 10.51492/cfwj.109.1

C. Potter

{"title":"Impacts of the CZU Lightning Complex Fire of August 2020 on the forests of Big Basin Redwoods State Park","authors":"C. Potter","doi":"10.51492/cfwj.109.1","DOIUrl":"https://doi.org/10.51492/cfwj.109.1","url":null,"abstract":"The CZU Lightning Complex Fire started on 16 August 2020 and burned across more than 35,000 ha (80,000 acres) of forest lands in Santa Cruz County, California. In this study, Landsat satellite images of pre- and post-fire vegetation cover from 2020 were used to first map burn severity (low, moderate, high fraction) patterns on the CZU Fire landscape in and around Big Basin Redwoods State Park (BBRSP). For mapping of live regrowing versus currently dead forest stands, changes in the normalized difference vegetation index (NDVI) derived from 10-m resolution Sentinel satellite imagery (post-CZU Fire) were transformed into a new assessment metric called the Recovery-Regrowth-Green-Index (RRGI). The RRGI result derived from Sentinel NDVI change from October 2020 to July 2022 showed that just 24% of the burned forest cover in BBRSP was still alive and regrowing to a moderate level of new green canopy cover. Field surveys in BBRSP in July 2022 showed that trees not having attained a RRGI class level of 3 or greater, with sprouting of new green foliage on most of their horizontal limbs two years after the CZU Fire, were no longer alive and growing back. The unprecedented intensity of the CZU Fires together with two successive years (2021 and 2022) of extreme drought and summer heat has inflicted severe damage on the majority of old-growth trees in BBRSP.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48107032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovering the lost potential of meadows to help mitigate challenges facing California’s forests and water supply 恢复草地失去的潜力，以帮助缓解加州森林和供水面临的挑战

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-04-12 DOI: 10.51492/cfwj.109.3

K. Pope, Adam K. Cummings

{"title":"Recovering the lost potential of meadows to help mitigate challenges facing California’s forests and water supply","authors":"K. Pope, Adam K. Cummings","doi":"10.51492/cfwj.109.3","DOIUrl":"https://doi.org/10.51492/cfwj.109.3","url":null,"abstract":"Groundwater systems in snow-dominated drainage areas supply cool baseflows that support instream and downstream users late into the dry season. Yet, these catchments are becoming rarer with climate change and anthropogenic pressures that threaten groundwater systems. Restoration of low-gradient meadows and streams can recover a catchment’s natural storage potential, especially in Mediterranean biomes such as the Sierra Nevada of California where summer groundwater recharge is scarce. The degradation of meadows due to intense human modification has decreased groundwater elevations and shifted wet meadow plant communities toward more xeric forest and shrub communities. We applied machine learning tools to find potential “lost meadows” that may no longer support high groundwater elevations or meadow vegetation but do exhibit basic geomorphic and climatic characteristics similar to existing meadows. The model reveals potential meadow habitat in the Sierra Nevada of nearly three times its current extent. We offer two conceptual applications of the model for incorporating meadows in watershed restoration planning. The first application focuses on strategically expanding wet meadows already associated with fuel breaks for increasing wildfire resistance. The second shows how meadow restoration in post-wildfire landscapes could increase capture of sediment from burned hillslopes where increased sediment storage would benefit water storage. Meadows are important habitats that have become degraded due to long-term overuse. Re-envisioning their potential extent shows that, with restoration, meadows could also serve as components of California’s multi-tiered efforts to manage pressing threats to its forests and water supply.","PeriodicalId":29697,"journal":{"name":"California Fish and Wildlife Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46333123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Precocious sexual maturity in juvenile California Central Valley spring-run Chinook Salmon 加州中央谷春季洄游奇努克鲑鱼的早熟性成熟

IF 0.5 4区生物学

California Fish and Wildlife Journal Pub Date : 2023-04-12 DOI: 10.51492/cfwj.109.4

Ryan Revnak

引用次数: 0